| 单词 | methyl |
| 例句 | The active ingredients in Deep Heat are listed as menthol and methyl salicylate. Which film was the best box-office flop? 2013-01-16T15:00:01Z The best indication of their taste is their powerful and distinctive fragrance, which Wikipedia says “strongly” resembles that of the chemical methyl benzoate. Falling for feijoas: the fruit New Zealand wants the world to love 2017-05-12T04:00:00Z "The methyl isocyanate gas affected respiratory, neurological, musculoskeletal, ophthalmic, endocrine and reproductive systems, and it damaged human chromosomes." Pesticides in the womb: New research shows how the Bhopal gas disaster is still destroying lives 2023-06-17T04:00:00Z Local media reported that the cider contained lethal amounts of methanol, also known as methyl alcohol or wood alcohol and much more toxic than the ethanol found in regular alcoholic drinks. Adulterated cider has killed 30 in Russia, dozens more sick - local officials 2023-06-06T04:00:00Z Twenty-nine people died in a single incident in 2021 after consuming locally produced spirits that contained methanol, also known as methyl alcohol or wood alcohol. Poisoned cider kills eight in Russia, dozens sick 2023-06-05T04:00:00Z In 2004, chemical manufacturers began to phase out methyl bromide, another chemical widely used to fumigate soils, because it harms Earth’s ozone layer. Newly discovered chemical is a highly targeted killer of parasitic worms 2023-05-25T04:00:00Z Among their questions are how the methyl bromide will be stored, how the plant’s fumes will be monitored and dispersed outside the facility, and whether it will pose risks to motorists along the four-lane highway. W.Va. residents rip pesticide facility plan as hearing looms 2023-05-04T04:00:00Z "We cannot confirm the reasons in this paper, but there is evidence the methyl isocyanate gas affected respiratory, neurological, musculoskeletal, ophthalmic, endocrine and reproductive systems, and it damaged human chromosomes," McCord explained. Pesticides in the womb: New research shows how the Bhopal gas disaster is still destroying lives 2023-06-17T04:00:00Z An existing air permit allows the Moorefield facility, which treats logs before overseas shipment, to annually emit nearly 10 tons of the ozone-depleting pesticide methyl bromide into the atmosphere. West Virginians fear log plant’s potential health risks 2023-04-27T04:00:00Z But the nutrition labels of many highly processed plant-based products require a Google search to decipher: methyl cellulose, modified starch, soy protein concentrate. Perspective | The hype over plant-based foods overlooks a key ingredient: Plants 2022-09-02T04:00:00Z The open bonds in the methyl and ethyl groups indicate that these alkyl groups are bonded to another atom. Chemistry 2019-02-14T00:00:00Z While dozens of countries have stopped most uses of methyl bromide, the countries Allegheny exports the logs to require the pesticide fumigation treatment. W.Va. residents rip pesticide facility plan as hearing looms 2023-05-04T04:00:00Z Some of the important functional groups in biological molecules are shown in Figure 2.29; they include: hydroxyl, methyl, carbonyl, carboxyl, amino, phosphate, and sulfhydryl. Biology for AP Courses 2022-06-09T00:00:00Z Environmental Protection Agency says methyl bromide is an odorless, colorless gas used to control pests in shipping and agriculture. West Virginians fear log plant’s potential health risks 2023-04-27T04:00:00Z "They had consumed methyl alcohol which was almost undiluted, believing it to be liquor." Toll rises to 38 in Indian spurious liquor incident 2022-07-27T04:00:00Z Removal of any one of the four hydrogen atoms from methane forms a methyl group. Chemistry 2019-02-14T00:00:00Z Virgin Islands was sickened after methyl bromide was sprayed for pest control at a Caribbean resort. W.Va. residents rip pesticide facility plan as hearing looms 2023-05-04T04:00:00Z An example of a hydrophobic group is the non-polar methyl molecule. Biology for AP Courses 2022-06-09T00:00:00Z While dozens of countries have stopped most uses of methyl bromide, the countries to where Allegheny exports the logs require the pesticide fumigation treatment. West Virginians fear log plant’s potential health risks 2023-04-27T04:00:00Z Three fatty acids, long chains of hydrocarbons with a carboxyl group and a methyl group at opposite ends, extend from each of the carbons of the glycerol. Anatomy and Physiology 2013-06-19T00:00:00Z The anion of methyl orange, In−, is yellow, and the nonionized form, HIn, is red. Chemistry 2019-02-14T00:00:00Z About 20 states now regulate the use of methyl bromide in log fumigation, according to the Southern Environmental Law Center. W.Va. residents rip pesticide facility plan as hearing looms 2023-05-04T04:00:00Z Instead, some genes were methylated, which simply means methyl groups were attached to certain nucleotides along the sequence. Biology for AP Courses 2022-06-09T00:00:00Z That exemption is valid until an acceptable alternative for methyl bromide is found, but the U.S. West Virginians fear log plant’s potential health risks 2023-04-27T04:00:00Z The prefix “nor-” actually refers to this chemical difference, in which a methyl group is missing. Anatomy and Physiology 2013-06-19T00:00:00Z When we add acid to a solution of methyl orange, the increased hydronium ion concentration shifts the equilibrium toward the nonionized red form, in accordance with Le Châtelier’s principle. Chemistry 2019-02-14T00:00:00Z One such mechanism, called methylation, involves a methyl group—a methane molecule that is missing one of its four hydrogen atoms, leaving a chemical bond free to attach to another atom or molecule. How Parents’ Trauma Leaves Biological Traces in Children 2022-06-25T04:00:00Z Their effects can vary: One editor might remove tags from histones to switch a gene on, whereas another might add methyl groups to DNA to repress it. Better than CRISPR? Another way to fix gene problems may be safer and more versatile 2022-06-01T04:00:00Z Centers for Disease Control and Prevention, methyl bromide also is a neurotoxin that can cause lung disease, convulsions, comas and ultimately death. West Virginians fear log plant’s potential health risks 2023-04-27T04:00:00Z U.S. authorities determined that methyl bromide, a highly toxic pesticide banned for indoor residential use in 1984, was to blame and had been used at that resort several times. Bahamas calls on US to help solve deaths of 3 American tourists 2022-05-09T04:00:00Z Two C atoms, four H atoms, and two O atoms can also be arranged to form a methyl formate, which is used in manufacturing, as an insecticide, and for quick-drying finishes. Chemistry 2019-02-14T00:00:00Z Methylation is a process by which, in the presence of specific enzymes, methyl groups attach to key sites on a strand of DNA or within the complex of DNA and proteins known as chromatin. How Parents’ Trauma Leaves Biological Traces in Children 2022-06-25T04:00:00Z That idea began to unravel in 1994, when Low discovered that a chemical tag called a methyl group could block transcription in bacteria—something scientists had thought was exclusive to eukaryotic cells. Ancient Molecule Helps Bacteria Untangle Genetic Activity 2022-04-08T04:00:00Z In 2015, a family of four from Delaware was sickened after methyl bromide was sprayed for pest control at the Caribbean resort where they were staying in the U.S. West Virginians fear log plant’s potential health risks 2023-04-27T04:00:00Z They mandate a standardized stamp showing materials have been treated with either heat or the highly toxic methyl bromide fumigant. Cargo, with a side of hornets, flies, and crabs 2022-02-14T05:00:00Z The equilibrium in a solution of the acid-base indicator methyl orange, a weak acid, can be represented by an equation in which we use HIn as a simple representation for the complex methyl orange molecule: Chemistry 2019-02-14T00:00:00Z By occupying these sites like roadblocks on a highway, methyl groups can alter transcription, a basic step in gene expression where a piece of RNA is made from a DNA template. How Parents’ Trauma Leaves Biological Traces in Children 2022-06-25T04:00:00Z Some residents reported distrust in the quality of water, in part due to compounds like methyl tert-butyl ether found in the water. 2020 wildfire survivors report health problems, housing woes 2022-02-05T05:00:00Z About 20 states now regulate the use of methyl bromide in log fumigation, according to the Southern Environmental Law Center, West Virginians fear log plant’s potential health risks 2023-04-27T04:00:00Z India suffered the world's worst industrial disaster in 1984 when methyl isocyanate gas leaked from a pesticide factory owned by American Union Carbide Corporation in the city of Bhopal, killing more than 5,000 people. Toxic gas kills six in India after illegal chemical dump 2022-01-06T05:00:00Z This makes it possible to have two isomers of 2-butene, one with both methyl groups on the same side of the double bond and one with the methyl groups on opposite sides. Chemistry 2019-02-14T00:00:00Z Emerging evidence also suggests that DNA methylation—the addition of a methyl group to the DNA—might be the link between the conditions a fetus is exposed to in the womb and later obesity. How a Child’s Heart Health Could Be Decided before Birth 2021-11-30T05:00:00Z In DNA methylation, a molecule called a methyl group attaches to a base, usually cytosine. Chemical on-off switches for genes may help explain why large mammals live longer 2021-10-18T04:00:00Z There’s another reason not to kill and eat goliath groupers, Koenig and other scientists say: They contain high levels of methyl mercury, a potent neurotoxin. Overruling scientists, Florida commission authorizes fishing of the vulnerable goliath grouper 2021-10-13T04:00:00Z Patterns of chemical tags called methyl groups glom onto genes, turning them on or off. Identical twins carry genetic modifications no one else has 2021-09-28T04:00:00Z Changing one of these hydroxyl groups to a methyl ether group forms codeine, a less potent drug used as a local anesthetic. Chemistry 2019-02-14T00:00:00Z The menthol and methyl salicylate trigger a cooling sensation. Another reader wonders: Is there a cure for under-breast rash? 2021-07-28T04:00:00Z Horvath is known for showing that patterns of these methyl groups change as a person ages, and for creating an “epigenetic clock” that uses a DNA sample to estimate a person’s age within 3.6 years. Chemical on-off switches for genes may help explain why large mammals live longer 2021-10-18T04:00:00Z Officials told FOX 4 of Dallas/Fort Worth that the chemicals involved in the incident were methyl iodide, hydrogen iodide, and methyl acetate. Texas chemical leak kills 2, injures 6; described as 'mass casualty' incident 2021-07-28T04:00:00Z The leak happened as workers were unloading a shipment of methyl formate from a vehicle at a chemical handling facility. 8 dead, 3 injured in China factory’s chemical leak 2021-06-11T04:00:00Z The second tested the effects of spraying methyl anthranilate around the bait box. How to poison a feral pig? It’s not easy 2021-05-23T04:00:00Z A commercial vehicle overturned and leaked the chemical methyl acrylate, authorities said. Interstate reopens after crash, hazardous materials concerns 2021-05-10T04:00:00Z Arsenic may influence whether methyl groups are added to specific DNA sequences. New Technologies Could Protect Against Arsenic Toxicity in Water 2021-03-11T05:00:00Z So in the new study, a team of international researchers from Peru, Germany, and the United States looked at an epigenetic process called methylation, in which cells add chemical tags called methyl groups to DNA. High-altitude living has changed more than just the genes of some Peruvians 2020-12-22T05:00:00Z On Dec. 3, 1984, thousands of people died after a cloud of methyl isocyanate gas escaped from a pesticide plant operated by a Union Carbide subsidiary in Bhopal, India. Today in History 2020-12-03T05:00:00Z When the researchers looked at methylation patterns—the DNA location of chemical tags called methyl groups that regulate gene expression—they found that changes caused by the injury resembled those in aging mouse cells. Researchers restore lost sight in mice, offering clues to reversing aging 2020-12-02T05:00:00Z Modifications at the C4 methyl group would be challenging to accomplish by semisynthesis, but were sitting ducks for Li and colleagues’ modular approach. Modular synthesis enables molecular ju-jitsu in the fight against antibiotic resistance 2020-09-22T04:00:00Z The researchers showed that when they inhibited a protein that removes adenine’s methyl groups, causing methyladenine to accumulate, tumor growth slowed. Controversial DNA modification could play key role in placenta development 2020-07-23T04:00:00Z The denaturants can include methanol, acetone, methyl ethyl ketone and denatonium, which intestinally make it less appealing to ingest, the U.S. The scientific reason your hand sanitizer smells so bad 2020-07-15T04:00:00Z As animals get older, tiny chemical tags called methyl groups get added and removed from DNA. To estimate your dog’s age in human years, you’re going to have to learn a bit more math 2020-07-10T04:00:00Z But big questions remain, he says: How do these factors cause methyl groups to be added or removed? Researchers restore lost sight in mice, offering clues to reversing aging 2020-12-02T05:00:00Z They are still not certain where the methyl fentanyl was meant to go, but the sheer volume makes it likely that North America, the drug’s biggest market, was the ultimate destination, the authorities said. Raids Reveal Massive Fentanyl Production in Myanmar 2020-05-19T04:00:00Z He added that the raids unearthed “unprecedented” amounts of methyl fentanyl, pointing to a new trend of synthetic opioid production “on a scale nobody anticipated.” Huge haul of meth, methyl fentanyl and heroin seized in Myanmar, in Asia's largest ever drug bust 2020-05-19T04:00:00Z More than 35 years later, victims say children are still being born with disabilities because of the effects of the methyl isocyanate gas spill. Charges filed after deadly gas leak at LG factory 2020-05-08T04:00:00Z In Bhopal, a much bigger leak occurred, also from a tank full of chemical liquid – extremely hazardous methyl isocyanate – as parts of the complex were reactivated after a shutdown. India's chemical plant disaster: another case of history repeating itself 2020-05-07T04:00:00Z This group would essentially block the molecule’s metabolic degradation, invoking the magic methyl effect. Manganese catalyst enables exploration of the magic methyl effect 2020-04-28T04:00:00Z Liu is part of an academic group running studies of another blood test, developed by the biotech Grail, which looks at patterns of methyl groups on cell-free DNA to detect cancers. Blood tests spot cancers before symptoms appear, but also produce false positives 2020-04-26T04:00:00Z After replacing a hydrogen with an oxygen, it steals a methyl group from a reagent known as trimethylaluminum and inserts it in oxygen’s place. Newly discovered ‘magic methyl’ reaction could turbocharge the potency of some drugs 2020-03-16T04:00:00Z These include processes that add or remove either methyl groups on DNA or acetyl groups on DNA-binding proteins called histones. Tweaking the DNA of myeloid cells curbs cancer spread 2020-02-25T05:00:00Z Guam’s Customs and Quarantine’s BioSecurity Task Force is filling containers of imported Christmas trees with odorless and colorless methyl bromide gas to kill potentially invasive species, The Pacific Daily News reports. Guam’s Christmas trees dosed with chemical to kill pests 2019-11-25T05:00:00Z The methyl molecule remains attached to DNA long after an animal has died, giving Carmel’s team a proxy for gene activity that took place 100,000 years ago. A mysterious human ancestor gets a face and a body 2019-09-19T04:00:00Z One of the best-studied epigenetic changes is the addition to a DNA base of a methyl chemical group — made up of one carbon atom and three hydrogens — which often quells the activity of a gene. First portrait of mysterious Denisovans drawn from DNA 2019-09-18T04:00:00Z “We hope a lot more drugs with the magic methyl effect will be discovered,” White says. Newly discovered ‘magic methyl’ reaction could turbocharge the potency of some drugs 2020-03-16T04:00:00Z Many of the early mammalian epigenetics studies focused on DNA methylation, which "tags" DNA with methyl groups that switch genes off. Parents’ emotional trauma may change their children’s biology. Studies in mice show how 2019-07-18T04:00:00Z The Environmental Protection Agency characterizes methyl bromide as a toxic fumigant to control a wide variety of agriculture and shipping pests including fungi, weeds, insects, roundworms, and rodents. Guam’s Christmas trees dosed with chemical to kill pests 2019-11-25T05:00:00Z Their teams focused on one mRNA modification called m6A: a methyl group—a simple chemical unit—attached to some of an RNA molecule’s adenine bases. Hidden layer of gene control influences everything from cancer to memory 2019-07-01T04:00:00Z In February, 150 people, mostly tea plantation workers, died and about 200 were hospitalized after drinking tainted liquor laced with methyl alcohol in two separate incidents in Assam state in India’s remote northeast. Tainted liquor kills 6 in northern India 2019-05-27T04:00:00Z White wanted to find a way to add a methyl group at the end of the drug building process. Newly discovered ‘magic methyl’ reaction could turbocharge the potency of some drugs 2020-03-16T04:00:00Z Me-His is an analogue of histidine in which a methyl group is attached to one of the nitrogen atoms in the side chain. Catalytic machinery of enzymes expanded 2019-05-26T04:00:00Z Impossible patties are made from soy protein concentrate and potato protein, with fat from coconut and sunflower oils, all bound together with methyl cellulose, a laxative. Opinion | I tried the Impossible Whopper. Here’s what I thought. 2019-04-15T04:00:00Z Notably, the enzymes responsible for transferring the first, second and third methyl groups to this lysine residue are unique11. Modification of histone proteins by serotonin in the nucleus 2019-03-12T04:00:00Z The workers consumed the tainted liquor laced with methyl alcohol, a chemical that attacks the central nervous system, on Thursday and started falling unconscious. India tainted liquor kills 150; 200 hospitalized 2019-02-24T05:00:00Z The workers consumed tainted liquor laced with methyl alcohol, a chemical that attacks the central nervous system, on Thursday and started falling unconscious. Police: 50 die from tainted liquor in India 2019-02-22T05:00:00Z However, analogues in which a methyl group is attached next to the carbonyl group were poor substrates. Catalytic machinery of enzymes expanded 2019-05-26T04:00:00Z The external contraption was built with methyl methacrylate, a polymer often used to fix cracked hooves, and steel pins. Fox with injured jaw rehabilitated, released in Wyoming 2019-01-12T05:00:00Z It is based on a process known as epigenetics - the attachment of a chemical tag known as a methyl group to DNA. Blood test can detect cancer in 10 minutes, researchers claim 2018-12-05T05:00:00Z This complex then recruits SETDB1 to deposit methyl modifications on histone proteins bound to viral DNA. How cells hush a viral invader 2018-11-27T05:00:00Z The truck’s tank was carrying a flammable liquid used in plastics called methyl methacrylate monomer and an unknown amount spilled during the crash. Truck driver cited in Colorado crash that spilled chemicals 2018-11-17T05:00:00Z Whereas the lysine is modified chemically — by the addition or removal of a methyl group — to regulate gene expression, the methionine is not. The unexpected role of histones in childhood brain cancer 2018-09-25T04:00:00Z These are chemical modifications, such as the attachment of methyl groups, that are made to DNA and to the histone proteins that associate with it to form chromatin. Neighbourhood deaths cause a switch in cancer subtype 2018-09-11T04:00:00Z They discovered cancer cells' genome is essentially barren except for intense clusters of methyl groups at very specific locations - instead of being spread evenly like in normal cells. Blood test can detect cancer in 10 minutes, researchers claim 2018-12-05T05:00:00Z According to its website, Elevance uses a patented process at its refinery in Gresik, East Java, to produce 180,000 tonnes of modified triglyceride, unsaturated methyl esters and olefins per year. New biodiesel recipe can cut Indonesia's fuel imports: Industry... 2018-07-24T04:00:00Z Shelter Island officials say methyl tertiary butyl ether was found last week following a routine test by the Suffolk County Department of Health Services. Banned gasoline additive detected in senior center water 2018-05-31T04:00:00Z Moreover, the K27M mutation affects not only the histone gene in which it occurs; in fact, the methionine broadly inhibits the enzyme that adds methyl groups to lysines in histones. The unexpected role of histones in childhood brain cancer 2018-09-25T04:00:00Z The indoor use of methyl bromide products was banned in 1984. Man accused of using banned pesticide that sickened family 2018-04-16T04:00:00Z They took a machine-learning approach to tumour classification based on changes in DNA methylation — the addition of methyl groups to DNA — and compared such diagnoses with those made by pathologists using histological analysis. Machine learning classifies cancer 2018-03-13T04:00:00Z There's an added complication that the fumigant often used against the stink bug - methyl bromide - damages car upholstery to the point that they are unsalable. Stink bugs threaten NZ car imports 2018-02-19T05:00:00Z Lumey and his colleagues propose that these methyl groups disrupt how cells normally use genes. Dutch genes still bear scars of a famine 2018-02-16T05:00:00Z Dr. Lumey and his colleagues propose that these methyl groups disrupt how cells normally use genes. The Famine Ended 70 Years Ago, but Dutch Genes Still Bear Scars 2018-01-31T05:00:00Z Anstee’s group is looking at epigenetic marks consisting of methyl groups on DNA from genes expressed mainly in liver cells that circulates freely in blood. Disease progression: Divergent paths Maden, B. E. Identification of the locations of the methyl groups in 18 S ribosomal RNA from Xenopus laevis and man. Visualization of chemical modifications in the human 80S ribosome structure 2017-11-14T05:00:00Z The presence of N1 methyl groups on adenine bases was thought to be widespread in messenger RNAs. Epitranscriptomics: Shrinking maps of RNA modifications 2017-10-24T04:00:00Z But Heijmans and his colleagues studied the same methyl groups in muscle cells, fat cells and other tissues they got from cadavers. Dutch genes still bear scars of a famine 2018-02-16T05:00:00Z One methyl group that is linked to a higher body mass index may be able to quiet a gene called PIM3, which is involved in burning the body’s fuel. The Famine Ended 70 Years Ago, but Dutch Genes Still Bear Scars 2018-01-31T05:00:00Z Others are looking for epigenetic alterations associated with the disease — changes in the number or types of chemical tag, such as methyl groups, that attach to specific sites in DNA and influence gene expression. Diagnostics: A flow of information 2017-11-07T05:00:00Z Maden, B. E. Locations of methyl groups in 28 S rRNA of Xenopus laevis and man: clustering in the conserved core of molecule. Visualization of chemical modifications in the human 80S ribosome structure 2017-11-14T05:00:00Z These are steroids that differ by only one methyl group and show some cross-reactivity with their nuclear receptors. Opinion | Marshall ought to do more research on gender 2017-10-03T04:00:00Z They then treated the nuclei with a chemical that converts cytosines without methyl groups to the RNA base uracil. Method that Maps DNA Tags Reveals New Types of Neurons 2017-09-18T04:00:00Z At millions of spots across our DNA, genes may carry a methyl group. The Famine Ended 70 Years Ago, but Dutch Genes Still Bear Scars 2018-01-31T05:00:00Z They sprayed tomato plants with either a neutral substance or varying amounts of methyl jasmonate to create graded levels of defense in the tomato plants. The Very Hungry Caterpillars That Turned to Cannibalism 2017-07-11T04:00:00Z Scientists sprayed tomato plants with methyl jasmonate to kick off these responses, then unleashed caterpillars on them. When attacked, tomato plants release a chemical that make caterpillars eat each other instead 2017-07-11T04:00:00Z Orrock and his research team sprayed tomato plants with methyl jasmonate—a substance plants produce in response to environmental stresses—to trigger the plants’ defense mechanisms. Plants Can Turn Caterpillars Into Cannibals to Avoid Getting Eaten 2017-07-10T04:00:00Z They sequenced the DNA to pinpoint the remaining cytosines, yielding a map of every methyl group. Method that Maps DNA Tags Reveals New Types of Neurons 2017-09-18T04:00:00Z Many researchers have speculated that prenatal conditions can influence people’s health across their lifetime, and some have speculated that methyl groups or other forms of epigenetics put this so-called fetal programming into action. The Famine Ended 70 Years Ago, but Dutch Genes Still Bear Scars 2018-01-31T05:00:00Z But faced with the well-defended plants sprayed with lots of methyl jasmonate, the caterpillars gave up on the tomato leaves early. The Very Hungry Caterpillars That Turned to Cannibalism 2017-07-11T04:00:00Z If the caterpillar is already eating the plant, releasing all the methyl jasmonate in the world isn’t going to save it. When attacked, tomato plants release a chemical that make caterpillars eat each other instead 2017-07-11T04:00:00Z And methyl jasmonate can do more than just make a plant taste bad. Plants Can Turn Caterpillars Into Cannibals to Avoid Getting Eaten 2017-07-10T04:00:00Z The researchers applied the approach to 3,377 mouse neurons and 2,784 human neurons, revealing 16 types of mouse neurons and 21 types of human neurons, each with a distinct pattern of methyl markings. Method that Maps DNA Tags Reveals New Types of Neurons 2017-09-18T04:00:00Z They retrieved DNA from the samples and placed it in a device able to find methyl groups at nearly 350,000 spots on the genome. The Famine Ended 70 Years Ago, but Dutch Genes Still Bear Scars 2018-01-31T05:00:00Z Dr. Orrock and his colleagues knew that a chemical called methyl jasmonate, which smells like limes or flowers, could induce this defense mechanism in tomato plants. The Very Hungry Caterpillars That Turned to Cannibalism 2017-07-11T04:00:00Z Eglin officials said on their Twitter account that the explosion happened Wednesday morning at the McKinley Climatic Lab near where methyl chloride was present. 5 Things to Know in Florida for July 6 2017-07-05T04:00:00Z The infrared spectrum of the resulting gas, as well as mass spectrometry, showed clear signs of methyl isocyanate. Potential building block of life found in very young star system 2017-06-08T04:00:00Z The sequencing step allowed the researchers to determine which genes are under the control of methyl groups in each type of neuron. Method that Maps DNA Tags Reveals New Types of Neurons 2017-09-18T04:00:00Z They searched for methyl groups that were common in the Dutch Hunger Winter cohort, for example, but missing from their siblings. The Famine Ended 70 Years Ago, but Dutch Genes Still Bear Scars 2018-01-31T05:00:00Z Focus on fish varieties high in omega-3s and low in methyl mercury, like salmon, trout, herring and anchovies, the guidelines say. Do DHA Supplements Make Babies Smarter? 2017-03-30T04:00:00Z Modification of methyl groups attached to DNA alters gene expression, and mutations that deregulate this methylation are common in some leukaemias. Cancer therapy: The leukaemia epigenome targeted : Nature : Nature Research 2017-03-28T04:00:00Z So a molecule such as methyl isocyanate will emit a characteristic fingerprint of photons that will appear as spikes or lines in the spectrum detected from the gas cloud. Potential building block of life found in very young star system 2017-06-08T04:00:00Z But two methyl group arrangements point to unique gene-expression profiles, hinting at two previously unrecognized types of neurons. Method that Maps DNA Tags Reveals New Types of Neurons 2017-09-18T04:00:00Z They sorted people according to their body mass index, for example, and looked for methyl groups that were unusually common in overweight people. The Famine Ended 70 Years Ago, but Dutch Genes Still Bear Scars 2018-01-31T05:00:00Z A DEA chemist demonstrates by snapping a methyl group onto a plastic model of fentanyl. Underground labs in China are devising potent new opiates faster than authorities can respond 2017-03-29T04:00:00Z Fritz Rottman, an organic chemist at Michigan State University in East Lansing, was trying to understand the role of RNA in regulating gene expression when he stumbled across a methyl group on adenine. An epigenetics gold rush: new controls for gene expression 2017-02-21T05:00:00Z The best-studied of these 'epigenetic' marks are methyl groups that, when added to or removed from DNA, boost or silence gene activity. Secrets of life in a spoonful of blood 2017-02-06T05:00:00Z Throughout the piece, Kennedy confused and conflated ethyl and methyl mercury. Trump’s Dangerous Support for Conspiracies About Autism and Vaccines 2017-01-11T05:00:00Z Finally, the researchers merged the results — and found a few methyl groups that were linked both to the famine and to health conditions later in life. The Famine Ended 70 Years Ago, but Dutch Genes Still Bear Scars 2018-01-31T05:00:00Z Distilling alcohol safely requires precise conditions to ensure methanol, or methyl alcohol, is separated from the drink. Toxic liquor kills at least 26 in Pakistan - BBC News 2016-12-27T05:00:00Z In fact, it was made with methyl alcohol, which is poisonous. After 72 Die, Putin Tightens Limits on Consumer Products High in Alcohol 2016-12-22T05:00:00Z One proxy is methyl chloroform, banned years ago for contributing to the ozone hole. Why is atmospheric methane surging? (Hint: it's not fracking) 2016-12-21T05:00:00Z But when the soil is underwater, it is largely cut off from oxygen, Dr. Sunderland said, allowing certain types of bacteria that convert the mercury into methyl mercury to flourish. Clean Energy, Dirty Water: Canada’s Hydroelectric Dams Have a Mercury Problem 2016-11-10T05:00:00Z So here’s the theory: Perhaps the Dutch Hunger Winter added a methyl group to fetuses born to starving mothers, which made the PIM3 gene less active — and continued to do so for life. The Famine Ended 70 Years Ago, but Dutch Genes Still Bear Scars 2018-01-31T05:00:00Z For gingivitis, Consumer Reports’ consultants advise that you consider a mouth rinse with stannous fluoride, cetylpyridinium chloride or the essential oils thymol, menthol, eucalyptol and methyl salicylate. Whitener, sensitive teeth, plaque fighter: How to choose a toothpaste 2016-10-28T04:00:00Z A toxic alcohol, like methyl alcohol, would be more irritating. Don’t Drink the Hand Sanitizer 2016-10-24T04:00:00Z Women who are pregnant or breast-feeding are urged to eat as much as 12 ounces of seafood to improve infant outcomes, but should steer clear of fish that’s high in methyl mercury. Why Is Fish Good for You? Because It Replaces Meat? 2016-10-07T04:00:00Z There is no consensus on how to deal with the methyl mercury created by damming. Clean Energy, Dirty Water: Canada’s Hydroelectric Dams Have a Mercury Problem 2016-11-10T05:00:00Z One of the best studied is a molecular cap called a methyl group. The Famine Ended 70 Years Ago, but Dutch Genes Still Bear Scars 2018-01-31T05:00:00Z The team then fused the disabled Cas9 to enzymes that either add or remove methyl groups. Epigenetics: CRISPR edits gene methylation : Nature : Nature Research 2016-09-27T04:00:00Z Horvath’s ageing “clock” relies on measuring a subtle chemical changes, in which methyl compounds attach or detach from the genome without altering the underlying code of our DNA. Internal 'clock' makes some people age quicker and die younger - regardless of lifestyle 2016-09-28T04:00:00Z The nutrients—which are found in such foods as pasta, eggs, spinach and poultry—are collectively known as methyl donors and play an important role in regulating numerous cellular functions. Frequent Testing for Nickel Allergies May Prevent Them 2016-09-19T04:00:00Z Her research forecasts that methyl mercury levels will double in people living downstream from Muskrat Falls. Clean Energy, Dirty Water: Canada’s Hydroelectric Dams Have a Mercury Problem 2016-11-10T05:00:00Z They seem to silence genes — at least, researchers have found that silenced genes often have a collection of methyl groups lurking nearby. The Famine Ended 70 Years Ago, but Dutch Genes Still Bear Scars 2018-01-31T05:00:00Z The authors found that removing methyl groups from two specific regions induced the expression of certain genes. Epigenetics: CRISPR edits gene methylation : Nature : Nature Research 2016-09-27T04:00:00Z His team previously found that methyl levels at 353 specific sites on the genome rise and fall according to a very specific pattern as we age - and that the pattern is consistent across the population. Internal 'clock' makes some people age quicker and die younger - regardless of lifestyle 2016-09-28T04:00:00Z Looking at RNA in a NMR machine, Al-Hashimi noticed that adding a methyl group — and prompting the RNA strand to unravel — actually made it more efficient in this task. A weird twist in DNA might explain why it’s such a great blueprint for life 2016-08-01T04:00:00Z He decided to test this idea by studying chemical tags known as methyl groups, which alter DNA structure to regulate how genes are expressed. Poverty linked to epigenetic changes and mental illness 2016-05-23T04:00:00Z Over a decade later, he and his colleagues were able to take advantage of powerful new technology for detecting methyl groups in blood cells. The Famine Ended 70 Years Ago, but Dutch Genes Still Bear Scars 2018-01-31T05:00:00Z Supreme Court said this week it wouldn’t hear Exxon’s appeal regarding its use of the gasoline additive MTBE, or methyl tertiary butyl ether, used since the 1970s to reduce smog-causing emissions. New Hampshire a big step closer to getting $236M from Exxon 2016-05-20T04:00:00Z Virus was incubated with the cells for 1 h at 37 °C, then layered with methyl cellulose. Structure of the thermally stable Zika virus : Nature : Nature Publishing Group 2016-04-18T04:00:00Z He and his colleagues added a methyl group to a strand of RNA to see what happened. A weird twist in DNA might explain why it’s such a great blueprint for life 2016-08-01T04:00:00Z He also describes how the attachment of chemical groups called methyl groups to DNA can change gene activity. Researcher under fire for New Yorker epigenetics article 2016-05-08T04:00:00Z But Dr. Heijmans and his colleagues studied the same methyl groups in muscle cells, fat cells and other tissues they got from cadavers. The Famine Ended 70 Years Ago, but Dutch Genes Still Bear Scars 2018-01-31T05:00:00Z One involved the addition of a chemical side chain, called a methyl group, to DNA. The Science of Identity and Difference 2016-05-02T04:00:00Z The Idaho State Department of Agriculture has continually sought out the USDA, Environmental Protection Agency and the Food and Drug Administration’s guidance on methyl bromide. Things to know: Families claim against USDA over pesticide 2016-04-24T04:00:00Z Made from methyl cellulose, then dehydrated and blow-torched a la minute, it retains an airy texture that dissolves instantly in the mouth. The 5 Best Muffuletta Sandwiches in New Orleans 2016-04-21T04:00:00Z It keeps track of age-related changes in molecules, called methyl groups, that attach to the outside of our strands of DNA, like barnacles on a rope dangling off a dock. Scientists can make mice live longer. Now they want to do the same for you. 2016-04-18T04:00:00Z The EPA banned methyl bromide for indoor use in 1984, as it is known to cause neurological damage. Terminix to Pay $10 Million for Poisoning Family 2016-03-30T04:00:00Z Yet, as DNA methyl groups or histone modifications get shifted around those gene sequences, the worker transforms into a gamergate, and virtually everything about the insect’s physiology and behavior changes. The Science of Identity and Difference 2016-05-02T04:00:00Z “The incidents reported here emphasize the problems that can occur with the use of one such chemical, methyl bromide.” Things to know: Families claim against USDA over pesticide 2016-04-24T04:00:00Z Federal authorities also are investigating the use of methyl bromide in Puerto Rico. US govt fines Terminix $10M in USVI toxic pesticide case 2016-03-29T04:00:00Z Acute exposure to methyl bromide can cause serious damage to the central nervous system and respiratory system, the Justice Department said. Terminix to pay $10 million for pesticide misuse: Justice Department 2016-03-29T04:00:00Z Another option: OTC creams containing capsaicin or methyl salicylate. Osteoarthritis: If it doesn’t get you in the knees, you may feel it in your hips 2016-01-25T05:00:00Z The methyl groups hang off the DNA string like Christmas ornaments, and specific proteins add and remove the ornaments, in effect “decorating” the genome. The Science of Identity and Difference 2016-05-02T04:00:00Z Here’s a look at their support and the pesticide, methyl bromide, which was used to eradicate a pest threatening Idaho’s $900 million dollar potato industry. Things to know: Families claim against USDA over pesticide 2016-04-24T04:00:00Z Authorities determined that Terminix used methyl bromide at a vacation unit below the one the family had rented. US govt fines Terminix $10M in USVI toxic pesticide case 2016-03-29T04:00:00Z The Environmental Protection Agency banned indoor use of methyl bromide products in 1984. Terminix to pay $10 million for pesticide misuse: Justice Department 2016-03-29T04:00:00Z When the IDH gene was mutated, the cancer cells’ DNA became studded with chemical tags known as methyl groups. Brain Cancers Reveal Novel Genetic Disruption in DNA 2015-12-23T05:00:00Z Whereas other drugs treat cancer by blocking enzymes that remove methyl groups from DNA. Epigenetics: The genome unwrapped : Nature : Nature Publishing Group 2015-12-01T05:00:00Z A lawyer for the family says they’ve been recovering from neurological damage since being exposed to methyl bromide at a U.S. Family sickened by banned pesticide blessed by Pope Francis 2015-09-28T04:00:00Z To do so, the researchers sprayed the trees with a plant hormone called methyl jasmonate. The Slow Process of Countering the Emerald Ash Borer 2015-08-27T04:00:00Z Four of them, methyl isocyanate, acetone, propionaldehyde and acetamide, had not been seen on comets before. Rosetta probe studies released, revealing fullest picture of comet yet 2015-07-30T04:00:00Z Dr. Bernstein and his colleagues tested their hypothesis by growing glioma cells in petri dishes and adding a rarely used first-generation chemotherapy drug, 5-Azacytidine, that dissolves methyl groups. Brain Cancers Reveal Novel Genetic Disruption in DNA 2015-12-23T05:00:00Z This research, just published in the Proceedings of the National Academy of Sciences, looked at DNA methylation, a phenomenon which involves the addition of chemicals called methyl groups to genetic material in chromosomes. No good deed goes unpunished 2015-07-16T04:00:00Z But the trade group still concluded that methyl eugenol “does not pose a significant cancer risk” to humans because it is used in food at such low levels. Meet the Secret Group That Decides Which Flavors Are 'Natural' 2015-06-09T04:00:00Z The most common way of controlling this gene expression is by plunking a molecule known as a methyl group on the promoter region. All About Epigenetics: The Other Way You Inherit Disease Risk 2015-06-08T04:00:00Z "Refrigerants were flammable like hydrocarbons, toxic like ammonia, or flammable and toxic like methyl chloride. There were accidents and people died." How 1970s deodorant is still doing harm - BBC News 2015-06-05T04:00:00Z What is needed now is a diagnostic test to detect the presence of methyl tags and thus the breaking of loops. Brain Cancers Reveal Novel Genetic Disruption in DNA 2015-12-23T05:00:00Z Epigenetic alterations are chemical tags such as methyl groups that are added to or removed from genes to turn them off or on. Animal behaviour: Nested instincts : Nature : Nature Publishing Group 2015-05-19T04:00:00Z The trade group used this argument to support its conclusion that methyl eugenol is safe, despite studies finding that it causes cancer in animals. Meet the Secret Group That Decides Which Flavors Are 'Natural' 2015-06-09T04:00:00Z Colombia bans use of methyl parathion — one of the two pesticides Ms. Grayson mentioned — and effectively bans use of the other, aldicarb, on flowers, as well. Flowers bring joy, not pesticides 2015-05-15T04:00:00Z Officials said documents suggest methyl bromide may have been improperly applied in various locations in Puerto Rico. Pesticide that hurt 4 in Virgin Islands also in Puerto Rico 2015-04-16T04:00:00Z The same method should apply to the growing list of other cancers with excessive numbers of methyl tags on their DNA, he added. Brain Cancers Reveal Novel Genetic Disruption in DNA 2015-12-23T05:00:00Z “We have confirmed that the problem is indeed methyl bromide,” she said. EPA looks at pesticide as cause of family illness at resort 2015-04-07T04:00:00Z After the trade group reconfirmed that it was safe, the International Agency for Research on Cancer found that methyl eugenol is “possibly carcinogenic to humans.” Meet the Secret Group That Decides Which Flavors Are 'Natural' 2015-06-09T04:00:00Z Environmental Protection Agency said on Monday that preliminary results confirmed the presence at their rented unit of methyl bromide, a dangerous pesticide that may have caused the illnesses. Poisoning at Caribbean resort under U.S. investigation 2015-04-06T04:00:00Z Environmental Protection Agency says investigators are looking at whether they were sickened by methyl bromide, which isn’t authorized for use in dwellings and may have been used to fumigate a room at the resort. Delaware family sickened in Virgin Islands, pesticide probed 2015-03-24T04:00:00Z The Coast Guard on Wednesday began efforts to remove the ship that carried the gasoline additive — methyl tert-butyl ether or MTBE. Business continues on Houston Ship Channel despite closure 2015-03-11T04:00:00Z So far the investigation has revealed a certified applicator working for Memphis, Tennessee-based Terminix applied the methyl bromide in the complex while targeting an indoor beetle that consumes wood, Enck said. EPA looks at pesticide as cause of family illness at resort 2015-04-07T04:00:00Z Four of the company’s workers died last year after being exposed to leaking methyl mercaptan, which is used to manufacture insecticide and fungicide. Records show DuPont workers exposed to chemical for years 2015-01-13T05:00:00Z The use of methyl bromide in the United States is restricted due to its acute toxicity and exposure can cause respiratory problems and damage to the central nervous system, the EPA said. Poisoning at Caribbean resort under U.S. investigation 2015-04-06T04:00:00Z At 6:22 a.m., another plant official reported that a major methyl mercaptan leak was still occurring. New reports outline Texas plant chaos, 4 deaths 2014-12-19T05:00:00Z The experiments revealed that the microbes were indeed dining on these methyl compounds. Life from 'deepest drill' revealed 2014-12-15T05:00:00Z Investigators also learned methyl bromide has been used in the complex before, but it’s not clear why the ban was ignored. EPA looks at pesticide as cause of family illness at resort 2015-04-07T04:00:00Z The four were exposed to leaking methyl mercaptan, which is used in the manufacture of insecticide and fungicide. Records: 8 deaths at DuPont plants since 2007 2014-12-08T05:00:00Z The disaster happened when water accidentally entered a methyl isocyanate storage tank, triggering an uncontrollable chemical reaction and blasting a cloud of toxic gases across nearby slums. India: After 30 Years, Bhopal is Still Simmering Toxic methyl isocyanate, an insecticide ingredient, began escaping from the Carbide plant around midnight on Dec. 3 and soon inundated the slums of Bhopal. If Bhopal Happened Today, Would the World React Any Differently? 2014-11-26T05:00:00Z The Harris County coroner determined this week that the deaths were accidental due to asphyxia with exposure to chemicals including methyl mercaptan. Workers who died at Dupont Texas plant lacked respirators: lawyer 2014-11-20T05:00:00Z The workers probably died from exposure to methyl mercaptan while responding to a valve leak around 4 AM on Nov. 15, DuPont said in a statement. 4 Workers Killed at DuPont Chemical Plant 2014-11-18T05:00:00Z About 4 a.m. on Saturday, a valve began to release methyl mercaptan gas. Agencies Look for Cause of Fatal Gas Leak in Texas 2014-11-16T05:00:00Z The company said that the leak began when a valve on a container of methyl mercaptan malfunctioned. Four Workers Are Killed in Gas Leak at Texas Chemical Plant 2014-11-15T05:00:00Z In violation of plant procedures, Indian supervisors had shut down a refrigeration unit that should have cooled the methyl isocyanate and prevented or suppressed dangerous chemical reactions. If Bhopal Happened Today, Would the World React Any Differently? 2014-11-26T05:00:00Z The workers were performing routine maintenance tasks at the company's manufacturing facility in La Porte, Texas, when the chemical, methyl mercaptan, began to leak at around 4 a.m. Workers die after chemical leak at DuPont plant near Houston 2014-11-16T05:00:00Z About 13 percent of California’s strawberry fields are dependent upon methyl bromide. Country Ham Scrambles for Greenhouse Gas Replacement 2014-10-22T04:00:00Z Another chemical produced at the plant, methyl isocyanate, is the same one that was linked to the 1984 leak at a Union Carbide chemical plant in Bhopal, India, which killed thousands of people. Agencies Look for Cause of Fatal Gas Leak in Texas 2014-11-16T05:00:00Z Indeed, the highest level of a compound called methyl paraben was found in “alternative” sunscreens marketed as “green” products. Are parabens and phthalates harmful in makeup and lotions? Genes may be switched off, or silenced, by the attachment of molecular caps called methyl groups, a process called methylation. Parasites Practicing Mind Control 2014-08-28T04:00:00Z The Johns Hopkins researchers looked at how a group of chemicals known as methyls affect the gene SKA2, which modifies how the brain reacts to stress hormones. Blood test could predict risk of suicide California strawberry growers are the biggest group still using methyl bromide. Country Ham Scrambles for Greenhouse Gas Replacement 2014-10-22T04:00:00Z Mr. Schmidt, the company spokesman, said methyl isocyanate was not involved in the leak on Saturday. Agencies Look for Cause of Fatal Gas Leak in Texas 2014-11-16T05:00:00Z The change involved adding chemicals, known as methyl groups, to the gene. Could a Blood Test Predict Suicide Risk? 2014-07-30T04:00:00Z Yet most methyl groups are removed with formation of an embryo, and only a small number of genes are known to escape this process. Starvation in pregnant mice marks offspring DNA 2014-07-09T04:00:00Z The authors say those changes in methyl group additions were likely the cause of diabetes-like symptoms in the mice. Diet during Pregnancy Linked to Diabetes in Grandchildren 2014-07-10T04:00:00Z The ham industry is exempted under the U.N.’s Montreal Protocol, but its annual allocations of methyl bromide are shrinking. Country Ham Scrambles for Greenhouse Gas Replacement 2014-10-22T04:00:00Z The Georgia Tech team’s new approach uses two solutions – one containing zinc ions and another containing methyl imidazole. New Molecular Sieve Offers Greener Way to Filter Chemicals 2014-07-09T04:00:00Z They were accused of stealing 60 liters of methyl alcohol and convicted of theft, negligent homicide and causing grave injury. Cuba sets prison terms for stolen alcohol deaths 2014-06-18T04:00:00Z One such modification involves tagging gene regions with chemical compounds called methyl groups and results in silencing the genes. Is what you eat before pregnancy important? 2014-05-27T04:00:00Z The termite genome also contains a high fraction of genes that are turned off by chemical tags, or methyl groups, the researchers found. Termite Genome Reveals Details of "Caste System" 2014-05-20T04:00:00Z Ham producers fill a room of dry-curing meats with methyl bromide gas at first sign of a mite. Country Ham Scrambles for Greenhouse Gas Replacement 2014-10-22T04:00:00Z The reaction is initiated by catalytic generation of methyl radicals, followed by a series of gas-phase reactions. [Report] Direct, Nonoxidative Conversion of Methane to Ethylene, Aromatics, and Hydrogen 2014-05-08T18:26:38.553Z One such modification involves attaching chemicals called methyl groups to DNA. Pre-pregnancy diet 'affects genes' 2014-04-30T01:10:52Z One such modification involves tagging regions of DNA with chemical compounds called methyl groups. Pre-pregnancy diet 'affects genes' 2014-04-30T01:10:52Z In human DNA, methyl groups most often attach at 'CpG sites' — places where a cytosine precedes a guanine in the DNA. Biomarkers and ageing: The clock-watcher 2014-04-09T17:20:26.613Z Not all country ham producers use methyl bromide. Country Ham Scrambles for Greenhouse Gas Replacement 2014-10-22T04:00:00Z They look at differences in the distribution of methyl groups at thousands of specific DNA nucleotides across the genome to identify arrangements that are common in a disease, or associated with variation in a trait. Epigenomics starts to make its mark 2014-04-02T17:20:26.967Z Another crucial flavor compound, methyl anthranilate, is found in heirlooms, but not in standard supermarket strawberries. Sleuthing The Secrets To A Scrumptious Strawberry 2014-03-18T12:30:28Z Acetyl and methyl groups can attach to histones and affect the expression of nearby DNA. Epigenetics: The sins of the father 2014-03-05T18:50:37.761Z To determine a person's age, Horvath explores data for hundreds of far-flung positions on DNA from a sample of cells and notes how often those positions are methylated — that is, have a methyl group attached. Biomarkers and ageing: The clock-watcher 2014-04-09T17:20:26.613Z Szyf had been tracking the addition and removal of methyl groups to DNA, which can silence or activate genes. Behaviour and biology: The accidental epigeneticist 2013-12-31T14:20:21.368Z Methylation — the addition of methyl groups — tends to suppress the activity of genes. Epigenomics starts to make its mark 2014-04-02T17:20:26.967Z However, the DGA suggests the health benefits from eating a wide range of seafood outweigh those associated with methyl mercury, although they do provide special recommendations for pregnant women and children. Fish Feast 2013-12-30T18:45:03.553Z Coen's team also showed that these methyl marks pass through seeds to later generations. Epigenetics: The sins of the father 2014-03-05T18:50:37.761Z He was exposed to the chemical methyl iodide, which is a speciality chemical used in the pesticide industry. Chemical firm's £120,000 leak fine 2013-12-13T16:18:53Z They leaked toxic gases such as ammonia, methyl chloride and sulphur dioxide, which damaged the respiratory system and could easily lead to death. 10 dangerous things in Victorian/Edwardian homes 2013-12-10T04:07:26Z In water, mercury transforms into a highly toxic organic molecule - methyl mercury - which is readily absorbed into the bodies of algae and plankton. A beautiful but deadly liquid metal 2013-11-30T02:16:47Z Nearly 200 people died in Orissa in 1992 after consuming a deadly combination of methyl and ethyl alcohol. India probes toxic alcohol deaths 2013-10-21T10:23:19Z There’s been very little research on residential exposure to methyl bromide. Women Living Near Pesticide-Treated Fields Have Smaller Babies 2013-09-19T18:45:00.947Z "I felt very sad when I saw the data, because methyl mercury can be absorbed by plants, get into the food chain and affect human health." The metal poisoning millions of miners 2013-09-18T00:59:53Z It’s called methyl mercury; it grows more concentrated as it moves up the food chain and is neurotoxic in large amounts, especially to developing fetuses. AnyBODY: Worrying — unnecessarily — about vaccinating your child 2013-09-02T21:29:40Z Also known as methanol or methyl alcohol, wood alcohol is commonly used as a solvent in medical laboratories and as a fuel or anti-freeze. Phony rum kills seven in Cuba, dozens hospitalized 2013-07-31T19:28:59Z Afterward, a second muscle biopsy showed that DNA methylation patterns in the muscle cells were already changing after that lone workout, with some genes gaining methyl groups and some losing them. Well: How Exercise Changes Fat and Muscle Cells 2013-07-31T04:01:56Z One major limitation is that no one knows how much methyl bromide the women were actually exposed to. Women Living Near Pesticide-Treated Fields Have Smaller Babies 2013-09-19T18:45:00.947Z This is far more toxic - in Minamata it was methyl mercury that poisoned thousands of people. The metal poisoning millions of miners 2013-09-18T00:59:53Z The AA gene variant, the researchers report online today in The Journal of Clinical Investigation, removed more methyl groups from the gene, leading to increased levels of the hunger hormone. Obesity Gene Linked to Hunger Hormone 2013-07-15T18:00:00Z One of these enzymes, DNMT3A, adds methyl groups to DNA and was found to be mutated in 51 of the 200 patients. Epigenetics: Reversible tags 2013-06-26T17:20:55.210Z She calls it a hydrogel, essentially a mix of hyaluronan and methyl cellulose. Biomaterials Offer A Robust Platform For Stem Cells 2013-06-14T14:22:00Z A powerful industrial solvent, methyl ethyl ketone, was reported in more than 400 products, including the plastics and textiles of infant toys and children's clothing. Chemicals of High Concern Found in Thousands of Children's Products 2013-05-06T15:15:21.833Z Sulfur compounds that easily vaporize were among the stinkiest chemicals Tonzetich identified in bad breath, especially hydrogen sulfide, which smells like rotten eggs, and methyl mercaptan, which smells like rotten cabbage. To Beat Bad Breath, Keep the Bacteria in Your Mouth Happy 2013-05-05T14:15:02.467Z The notes essentially said things such as: "This part binds a protein"; "This part is often tagged with methyl groups"; and "This part is usually tucked away, wound around a protein called a histone." Friction over Function: Scientists Clash on the Meaning of ENCODE s Genetic Data 2013-04-12T10:45:00.533Z The known syntheses are effective, and methyl formate is already cheap. Astrochemistry: The great test tube in the sky 2013-03-14T16:06:58Z Some molecules, such as methyl groups, physically block cellular machinery from reading the genetic instructions in certain segments of DNA; some enzymes loosen the bonds between histones and DNA, making particular genes more accessible. Will Cloning Ever Save Endangered Animals? 2013-03-11T11:15:00.737Z But when Liebl combed the genomes of the birds to look for parts that had methyl groups attached — a key epigenetic marker — she found a high level of variability across populations. Epigenetics Posited as Important for Success of Invasive Species 2013-01-10T18:15:02.317Z Compared with people who had never smoked, these individuals had fewer chemical tags known as methyl groups—a common type of epigenetic change—on 20 different regions of their DNA. Smoking Smothers Your Genes 2012-12-21T19:15:00Z The carbon at the methyl end is considered the "omega" carbon. The Alpha and the Omegas 2012-11-16T22:05:00Z From a medical point of view, doctors agree that the long-term effects of exposure to the Bhopal gas, methyl isocyanate, are still not known so why use the victims for drug trials? Have India’s poor become human guinea pigs? 2012-11-01T00:40:31Z BTW corruption in the Czech republic has reached new levels...after methyl alcohol fiasco now the new accusation about the vegetable oils containing pesticides. EU Summit: The kiss of life, or of death? 2012-10-19T15:57:11Z They mapped the regions of the genome that were carpeted by methyl chemical groups, which generally indicate areas in which genes are silent. ENCODE: The human encyclopaedia 2012-09-05T17:20:34.310Z Oil companies and automakers offered their own alternative: methyl tertiary butyl ether or MTBE. Government Mandate or No, Ethanol Is Here to Stay 2012-08-24T12:15:04.410Z The number refers to the position of the double bond closest to one end of the fat molecule, known as the "methyl'" end. The Alpha and the Omegas 2012-11-16T22:05:00Z Similarly, two other earthly bio-signatures—methyl chloride and nitrous oxide—may be more prevalent and easier to detect on terrestrial planets circling M dwarfs, Meadows says. New Biomarkers Honed to Help Search for Life on Earthlike Exoplanets 2012-07-23T17:45:06.957Z The outside of the container is inscribed with the chemical compound for methyl isocyanate, CH3NCO, and "200c," the temperature of the gas as it was emitted. India Ink: In 'Bhopal: A Silent Picture,' Artist Recalls the 1984 Disaster 2012-07-23T16:09:51Z Drought and poor nutrition are known to cause so-called epigenetic changes to DNA, the addition or removal of small chemical tags known as methyl groups that effectively turn genes on or off. Inbreeding's Downside Is Not All in the Genes 2012-07-11T00:20:00Z He noted remarkable changes wrought by the swapping of one methyl group in biology. How to Succeed in Science: Lindau Nobel Laureate Meeting, Day 4 2012-07-05T15:45:00.413Z Adding small chemicals, methyl groups, to specific points of DNA is one of the main ways of turning a gene off. Ageing in centenarians and newborns 2012-06-14T23:55:06Z One of the most common of these epigenetic changes involves a methyl group -- one carbon atom and three hydrogen atoms—binding to a nucleotide, usually cytosine. Aging Is Recorded in Our Genes 2012-06-11T20:10:00Z Environmental factors can place shielding methyl groups directly onto DNA, blocking expression of certain genes. 10 Things Exome Sequencing Can t Do-But Why It s Still Powerful 2012-05-16T13:45:00.180Z To show that methylation was a cause rather than an effect of inbreeding depression, the researchers treated another batch of inbred Scabiosa with a chemical called 5-azacytidine, which removes methyl groups from DNA. Inbreeding's Downside Is Not All in the Genes 2012-07-11T00:20:00Z In a mutation that changes one methyl group, an XY baby has a female anatomy but is infertile. How to Succeed in Science: Lindau Nobel Laureate Meeting, Day 4 2012-07-05T15:45:00.413Z For example, adding methyls to DNA tends to decrease the gene expression of that DNA segment, while taking away methyl groups increases it. Methylating Your Muscle DNA 2012-05-14T12:15:00.237Z This enzyme attaches methyl groups to histone proteins, which are part of the chromosomal packaging. Cancer and epigenetics: Cancer?s epicentre 2012-04-03T16:18:14Z Filter the solution, and when cold add 10 liters of the liquid to 4 liters of glycerin and 1 liter of methyl alcohol. Directions for Collecting and Preserving Insects 2012-03-28T02:00:31.483Z Vergeer speculates that the abnormal methylation might result from some of the rare genes exposed by inbreeding, especially if these genes help regulate the attachment and removal of methyl groups. Inbreeding's Downside Is Not All in the Genes 2012-07-11T00:20:00Z “What would our society be if a methyl group was not where it is now?” How to Succeed in Science: Lindau Nobel Laureate Meeting, Day 4 2012-07-05T15:45:00.413Z Although federal environmental regulators approved the pesticide in 2007, methyl iodide became a focus of fierce debate in California before it gained final approval from state regulators there in December 2010. Pesticide Pulled from U.S. Market Amid Fear of Toxicity 2012-03-22T05:33:19Z This switches genes on and off by plastering either their DNA or the proteins which support that DNA in chromosomes with clusters of atoms called methyl and acetyl groups. Cancer and epigenetics: Cancer?s epicentre 2012-04-03T16:18:14Z California regulators approved use of the substance, methyl iodide, in 2010 despite opposition from scientists and environmental and farm workers who say that it is highly toxic. Green Blog: Company Halts U.S. Sales of Fumigant 2012-03-21T18:08:30Z The more intense the exercise, she says, the more the methyl groups are on the move. Exercise Breakthrough: How Working Out Alters DNA 2012-03-07T20:06:22Z One methyl group also makes the difference between estrogen and testosterone. How to Succeed in Science: Lindau Nobel Laureate Meeting, Day 4 2012-07-05T15:45:00.413Z Methyl iodide was developed to replace methyl bromide, a widely used soil fumigant banned under an international climate treaty after it was found to deplete ozone. Pesticide Pulled from U.S. Market Amid Fear of Toxicity 2012-03-22T05:33:19Z These markers are methyl, acetyl and other chemical groups that attach to the DNA, turning some genes off and others on. Stem Cells: Flexible friends 2012-02-29T18:21:27.080Z At first glance, these scribes seem quite ordinary—methyl, acetyl, and phosphoryl groups, clinging to proteins associated with DNA, or sometimes even to DNA itself, looking like freeloaders at best. Epigenetics: A Turning Point in our Understanding of Heredity 2012-01-16T16:45:00.190Z The muscle biopsies following the 80% sessions showed a lower concentration of methyl groups — and therefore more RNA, which is the first byproduct of gene activity — than samples taken after the 40% sessions. Exercise Breakthrough: How Working Out Alters DNA 2012-03-07T20:06:22Z Two of these are of the greatest importance, methyl alcohol and ethyl alcohol. Marvels of Scientific Invention An Interesting Account in Non-technical Language of the Invention of Guns, Torpedoes, Submarine Mines, Up-to-date Smelting, Freezing, Colour Photography, and many other recent Discoveries of Science 2011-11-19T03:00:24.517Z Only one strawberry farmer in California used methyl iodide in 2011. Pesticide Pulled from U.S. Market Amid Fear of Toxicity 2012-03-22T05:33:19Z Alcohol and methyl alcohol are intoxicants; ether, chloroform, and chloral are an�sthetics, and yet no two are possessed of the same qualities. Etidorhpa or the End of Earth. The Strange History of a Mysterious Being and The Account of a Remarkable Journey 2011-10-18T02:00:20.997Z Certain epigenetic modifications, such as the binding of methyl groups to histone proteins, the bobbins around which DNA is wound for chromatin packaging, are responsible for holding the fiber in an open state. Epigenetics: A Turning Point in our Understanding of Heredity 2012-01-16T16:45:00.190Z Emissions of chlorinated fluorocarbons, or CFCs, once found in aerosol sprays, and other ozone-depleting substances like the soil fumigant methyl bromide produced the first ozone hole over the Antarctic, which was identified in 1985. Scientists Report Ozone Hole Over the Arctic 2011-10-04T00:24:50Z Wood is strongly heated in an iron still, and the methyl alcohol is given off in the form of vapour, which on being collected and cooled condenses into liquid. Marvels of Scientific Invention An Interesting Account in Non-technical Language of the Invention of Guns, Torpedoes, Submarine Mines, Up-to-date Smelting, Freezing, Colour Photography, and many other recent Discoveries of Science 2011-11-19T03:00:24.517Z The next layer contains a methyl dye that is normally blue but turns colorless when sulfites attach to it. Testing for Disease, for Under a Penny, Using Bits of Paper 2011-09-26T22:21:15Z As described in their paper in Nature Nanotechnology, here’s how it works: the researchers used a butyl methyl sulfide molecule as their “motor.” The World's Smallest Electric Motor is Made of Only One Molecule 2011-09-06T04:25:17Z EPA officials made the finding in a 1999 civil right complaint over methyl bromide. EPA settles complaint over now-restricted pesticide?s effect on Latino schoolchildren in Calif 2011-08-25T21:42:09Z “Why yes,” you organic chemistry nerds may say, “It clearly is a molecule of sulfur with two methyl groups attached.” Chemistry Day at Scientific American Blog Network 2011-08-02T17:45:00.247Z This result is achieved by adding some of the methyl alcohol derived from the vapour given off by wood when heated. Marvels of Scientific Invention An Interesting Account in Non-technical Language of the Invention of Guns, Torpedoes, Submarine Mines, Up-to-date Smelting, Freezing, Colour Photography, and many other recent Discoveries of Science 2011-11-19T03:00:24.517Z Both methyl chloride, which can be used to make rubber, and oleum, a type of sulfuric acid, were accidentally released into the atmosphere. U.S. report faults DuPont in worker's 2010 death 2011-07-07T16:48:39Z The oral drug, bardoxolone methyl, is the first medicine to demonstrate improvement in kidney function in patients with the deadly disease and could delay the need for expensive and inconvenient kidney dialysis, researchers said. Kidney improvement sustained by Abbott drug: study 2011-06-24T14:17:15Z Small chemicals called methyl groups bind to the DNA, helping to determine which genes become active. Spit Analysis Reveals Hocker's Age 2011-06-22T22:15:00.450Z Just a sulfur molecule with two methyl groups attached. Chemistry Day at Scientific American Blog Network 2011-08-02T17:45:00.247Z In the rivers, bacteria convert it to methyl mercury, which gets into the food chain, Fraser said. Amazon Forest and the Price of Gold 2011-04-22T16:27:00Z Often these are chemical tags called methyl groups that can bind to DNA, where they act a bit like a volume knob, turning up or down the activity of certain genes. Why Skinny Moms Sometimes Produce Fat Children 2011-04-22T16:45:52Z The most common adverse side effect seen with bardoxolone methyl included muscle spasm, transient elevations in liver enzymes and nausea. Kidney improvement sustained by Abbott drug: study 2011-06-24T14:17:15Z It is most readily prepared by passing the vapour of methyl alcohol, mixed with air, over heated copper or platinum. Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 6 "Foraminifera" to "Fox, Edward" 2011-04-22T02:00:08.637Z Many essential oils are now manufactured synthetically, e.g. oil of wintergreen owes its fragrance to methyl salicylate, pineapple oil to ethylbutyrate, pear oil to amylacetate. The New Gresham Encyclopedia Volume 4, Part 2: Ebert to Estremadura 2011-04-14T02:00:56.200Z Whilst the electrolysis is proceeding, the apparatus is kept at a constant temperature of −23� C. by means of liquid methyl chloride. Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 5 "Fleury, Claude" to "Foraker" 2011-04-03T02:00:20.883Z A recent survey of methyl groups on the DNA of adult people has also suggested that these tags are linked to obesity. Why Skinny Moms Sometimes Produce Fat Children 2011-04-22T16:45:52Z Professor Yang's team processed chicken feathers and added a chemical known as methyl acrylate to turn them into a plastic, from which they made thin films. Birdbrain idea? Put chicken feathers in plastic! 2011-03-31T23:39:41Z Bayer broke the news during a federal court hearing in a lawsuit brought by residents seeking to stop the company from restarting the unit that produces methyl isocyanate, used in pesticide production. | Mid-Atlantic: West Virginia: Bayer Ends Toxic Chemical Production 2011-03-19T00:30:52Z District Judge Joseph Goodwin not to declare storage tanks of methyl isocyanate, or MIC, a public nuisance as some residents are demanding. National industry group warns judge against declaring MIC storage in W.Va. a public nuisance 2011-03-15T17:13:02Z Here, chemical compounds called methyl groups attach to regions of DNA and, like a volume knob on a stereo, turn the activity of a gene up or down. A Safer Way to Spot Down Syndrome 2011-03-06T18:00:00Z In a 2005 study at the University of Auckland, for example, researchers found that they could prevent obesity in rats born to starved mothers by removing methyl tags from their DNA. Why Skinny Moms Sometimes Produce Fat Children 2011-04-22T16:45:52Z In healthy cells a compound called a methyl group is tagged to DNA where it acts as a "red light", preventing certain genes from producing proteins. Hope for early bowel cancer test 2011-03-05T02:52:27Z One possible answer lies in epigenetics: the chemical footprints, such as methyl groups, stamped on DNA by early life events that alter gene-expression patterns and might contribute to later disease. Epidemiology: Study of a lifetime 2011-03-02T18:20:50.637Z It is best prepared by heating methyl alcohol and sulphuric acid to 140� C. and leading the evolved gas into sulphuric acid. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 7 "Equation" to "Ethics" 2011-02-27T03:00:31.973Z True or false: Pregnant women should limit consumption of white tuna to 6 ounces a week due to high methyl mercury content. A quiz on dietary guidelines 2011-02-16T17:47:04Z The genomes also revealed that adding or removing chemical tags called methyl groups to or from a handful of genes to turn them off or on determines an ant's fate in the social ladder. An Army of Ant Genomes 2011-01-31T20:01:00Z If an aqueous solution of methyl acetate be allowed to stand, a slow decomposition goes on. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 2 "Ehud" to "Electroscope" 2011-01-29T03:00:23.777Z However, the concentration of atmospheric hydroxyl radicals is extremely difficult to measure, so it must be inferred from measurements of the abundance of other species, like methyl chloroform. This Week in Science 2011-01-06T19:25:00.633Z The team found that the enzyme also adds methyl groups to proteins involved in cutting and pasting RNA molecules that will later be made into proteins. Splices of Time 2010-10-20T18:11:00Z All cells switch off the genes they do not need by attaching small chemicals called methyl groups to certain sites along their DNA. DNA Test May Speed Colon Cancer Diagnosis 2010-08-09T23:38:00Z For decades, farmers injected another chemical, methyl bromide, into the soil before planting strawberries. Dispute Over Pesticide for California Strawberries Has Implications Beyond State 2010-06-19T21:48:00Z A poisonous gas called methyl isocyanate leaked in the plant and spread over nearby slums. Indian Court Convicts 7 in Bhopal Disaster 2010-06-07T09:49:00Z Past studies of atmospheric methyl chloroform have indicated that OH can undergo large annual shifts in concentration, although atmospheric models predict a less variable history. This Week in Science 2011-01-06T19:25:00.633Z By adding methyl groups to proteins involved in selecting where to cut the RNA molecule, the interaction with some weak cutting sites is strengthened, the researchers discovered. Splices of Time 2010-10-20T18:11:00Z Forty tonnes of a toxin called methyl isocyanate leaked from the factory and settled over slums on 3 December 1984. Bhopal verdict due after 25 years 2010-06-07T04:19:00Z Then the Montreal Protocol international climate treaty banned methyl bromide, saying it had been found to deplete ozone. Dispute Over Pesticide for California Strawberries Has Implications Beyond State 2010-06-19T21:48:00Z This advice, promulgated in 2004, was intended to protect fetuses from the malign effects of methyl mercury, which accumulates in fish such as tuna. Diet and the evolution of the brain: Fish and no chips 2010-05-27T11:06:00Z The California Department of Pesticide Regulation has proposed replacing a popular fumigant with methyl iodide despite concerns by its own scientific advisory panel that it could poison the air and water. Pesticide Prompts Scuffle Over Safety in California 2010-05-25T16:36:00Z The scarcity stems in large part from the shortage of an obscure chemical compound called methyl methacrylate, one of the key ingredients in roadworthy paint, which must be sturdy, long-lasting and reflective. Traffic Paint Shortage Threatens Roadwork 2010-05-24T01:10:00Z The researchers focused on the methylation of genes, a process in which a methyl molecule is added to DNA, typically turning off a gene and inhibiting production of the protein that the gene encodes. Genetic Changes Show Up In People With PTSD 2010-05-04T17:08:00Z They found methyl iodide, a chemical less harmful to the ozone, but with more potential hazards to human health. Dispute Over Pesticide for California Strawberries Has Implications Beyond State 2010-06-19T21:48:00Z For example, some BVOCs such as terpenes, methyl jasmonate or methyl salicylate act as airborne signals between plants, warning them of an attack by herbivores. 2010-02-09T09:49:00Z California's $1.6 billion strawberry industry would probably be the main user of the substitute for methyl bromide, which is being phased out under an international treaty because it depletes the earth's protective ozone layer. Pesticide Prompts Scuffle Over Safety in California 2010-05-25T16:36:00Z But what if flooding the fetus with methyl groups turns off healthy genes? 2010-01-14T17:38:00Z Darwin taught us that it takes many generations for a genome to evolve, but researchers have found that it takes only the addition of a methyl group to change an epigenome. 2010-01-08T21:15:00Z California has provisionally approved methyl iodide and will issue a final decision after the public comment period ends June 29. Dispute Over Pesticide for California Strawberries Has Implications Beyond State 2010-06-19T21:48:00Z A few drops of starch solution are then added, and when the blue colour has nearly vanished a drop or two of methyl orange makes the end reaction very sharp. Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 7 "Arundel, Thomas" to "Athens" After strawberries, the state's major methyl bromide users are flower growers, who are concentrated in Ventura and San Diego counties. Pesticide Prompts Scuffle Over Safety in California 2010-05-25T16:36:00Z Some soapmakers prefer to use a more expensive refined methyl alcohol, but outside of adding to the cost of the soap, there is no particular advantage. Soap-Making Manual A Practical Handbook on the Raw Materials, Their Manipulation, Analysis and Control in the Modern Soap Plant. A methyl group is a basic unit in organic chemistry: one carbon atom attached to three hydrogen atoms. 2010-01-08T21:15:00Z When the reaction is complete the acid is neutralized with soda, and the phenyl methyl pyrazolone extracted with ether and distilled in vacuo. Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 2 "Anjar" to "Apollo" The difference between these two bases is one methyl group: thymine is a 5-methyluracil. History of Phosphorus The pesticide department's own panel of scientists signaled alarm in their February report, saying that a large number of people would be exposed to methyl iodide if it were used as an agricultural fumigant. Pesticide Prompts Scuffle Over Safety in California 2010-05-25T16:36:00Z To quickly determine total alkali in soap a weighed portion of the soap may be ignited to a white ash and the ash titrated for alkalinity using methyl orange as an indicator. Soap-Making Manual A Practical Handbook on the Raw Materials, Their Manipulation, Analysis and Control in the Modern Soap Plant. When a methyl group attaches to a specific spot on a gene — a process called DNA methylation — it can change the gene's expression, turning it off or on, dampening it or making it louder. 2010-01-08T21:15:00Z The portion distilling at about 200� C. is then methylated by means of methyl alcohol and methyl iodide at 100-110� C., the excess of methyl alcohol removed and the product obtained decolorized by sulphuric acid. Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 2 "Anjar" to "Apollo" For this purpose only boric acid or its potassium salt must be present; and to ensure this, the borate can be distilled with sulphuric acid and methyl alcohol and the volatile ester absorbed in potash. Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 3 "Borgia, Lucrezia" to "Bradford, John" The most common example of this group is gaultherin, C14H18O8, which is found in the bark of the black birch and is a combination of glucose with methyl salicylate. The Chemistry of Plant Life Pipette off 50 cubic centimeters into a 200 cubic centimeter beaker, dilute slightly with distilled water, add a few drops of methyl orange indicator and titrate with normal acid. Soap-Making Manual A Practical Handbook on the Raw Materials, Their Manipulation, Analysis and Control in the Modern Soap Plant. The B vitamins acted as methyl donors: they caused methyl groups to attach more frequently to the agouti gene in utero, thereby altering its expression. 2010-01-08T21:15:00Z Iodine green introduced; leading to further use for methyl iodide. Coal and What We Get from It Examples are water and methyl or ethyl alcohol. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 5 "Dinard" to "Dodsworth" Careful studies of its addition and oxidation products prove that it has the following structural arrangement: As this formula indicates, the compound contains one unsaturated, double-bond linkage, one primary alcohol group, and eleven methyl groups. The Chemistry of Plant Life Methyl orange Red Yellow Very slightly acid Phenolphthalein Colorless Red Acid Litmus Red Blue Acid It may be further stated that methyl orange at the neutral point is orange in color. Soap-Making Manual A Practical Handbook on the Raw Materials, Their Manipulation, Analysis and Control in the Modern Soap Plant. Thus methyl chloride, ethylene and oxygen are used in the cryogenic laboratory of Leiden, while Sir James Dewar has used air as the last term. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 7 "Columbus" to "Condottiere" In 1866 this violet dye was manufactured in France by Poirrier, and it is still made in large quantities, being known under the name of “methyl violet.” Coal and What We Get from It It is the methyl ester of a neutral body colchicein, which may be obtained in white acicular crystals. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 6 "Cockaigne" to "Columbus, Christopher" Now to the etherial solution, add about half its volume of a concentrated solution of potassium hydroxide in methyl alcohol. The Chemistry of Plant Life The barium carbonate is added through the funnel at the top of the tank mixed with a little water and the lye tested until it is neutral to methyl orange indicator. Soap-Making Manual A Practical Handbook on the Raw Materials, Their Manipulation, Analysis and Control in the Modern Soap Plant. Not hard to smack us in the eyes with methyl chloride from here, either. The Blue Ghost Mystery Aniline, toluidine, and similar bases can be methylated by the action of methyl iodide, but the cost of iodine is too great to enable this process to be used by the manufacturer. Coal and What We Get from It We derived this substance from ethane by introducing a methyl group; hence it may be termed “methylethane.” Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1 "Châtelet" to "Chicago" As specially suitable we must mention fuchsin, methyl green, methyl violet, methylene blue. Histology of the Blood Normal and Pathological For the carbonates about 1 gram may be weighed, washed into a 400 cubic centimeter beaker, diluted with distilled water, methyl orange indicator added and titrated with normal acid. Soap-Making Manual A Practical Handbook on the Raw Materials, Their Manipulation, Analysis and Control in the Modern Soap Plant. There is the fact that the Frostola man bought a quantity of methyl chloride. The Blue Ghost Mystery The same result can, in fact, be arrived at by heating dry aniline hydrochloride, i.e. the hydrochloric acid salt of aniline, with methyl alcohol or wood-spirit in strong metallic boilers under great pressure. Coal and What We Get from It Henry started with methyl iodide, the formula of which we write in the form CIaHbHcHd. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1 "Châtelet" to "Chicago" Staining mixtures of 2 acids and 1 base, in particular the mixture to be described later in detail of orange g.—acid fuchsin—methyl green. Histology of the Blood Normal and Pathological If borax is present the carbon dioxide is boiled off after neutralizing exactly to methyl orange; cool, add mannite and phenolphthalein and titrate the boric acid with standard alkali. Soap-Making Manual A Practical Handbook on the Raw Materials, Their Manipulation, Analysis and Control in the Modern Soap Plant. There is the fact that methyl chloride could have produced the effect we felt. The Blue Ghost Mystery Benzyl chloride, it may be remarked in passing, plays the same part in organic chemistry as methyl chloride, and enables certain compounds to be benzylated, just in the same way that they can be methylated. Coal and What We Get from It From similar investigations of valerianic acid he was led to conclude that fatty acids were oxygen compounds of the radicals hydrogen, methyl, ethyl, &c., combined with the double carbon equivalent C2. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1 "Châtelet" to "Chicago" Glycerine These fluids are measured in the above-mentioned order, with the same measuring glass; and from the addition of methyl green onwards the fluid is thoroughly shaken. Histology of the Blood Normal and Pathological Dissolve the ash in distilled water and titrate total alkalinity, using as indicator methyl orange cold or litmus boiling. Soap-Making Manual A Practical Handbook on the Raw Materials, Their Manipulation, Analysis and Control in the Modern Soap Plant. "And loading with methyl chloride to squirt at us?" The Blue Ghost Mystery Hofmann violets discovered; leading to manufacture of methyl iodide from iodine, phosphorus, and wood spirit. Coal and What We Get from It The hydroxyl group also resembles the methyl group in its morphotropic effects, producing, in many cases, no change in symmetry but a dimensional increase in one direction. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1 "Châtelet" to "Chicago" Jenner's stain consists of a solution in methyl alcohol of the precipitate formed by adding eosine to methylene blue. Histology of the Blood Normal and Pathological The metabolism of the methyl purins, of which group caffein is a member, appears to vary with the quantity ingested. All About Coffee I tried to sell him a new analgesic ointment, but he insisted on methyl chloride. The Blue Ghost Mystery Blue shade of methyl violet introduced; leading to manufacture of benzyl chloride. Coal and What We Get from It Owing to the unstable character of the methyl green, this stain deteriorates after about six months. The Elements of Bacteriological Technique A Laboratory Guide for Medical, Dental, and Technical Students. Second Edition Rewritten and Enlarged. The substitution of methyl salicylate for the water has been attended with success. Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 3 "Banks" to "Bassoon" The spinal and muscular hyperic excitability produced by caffein is, in his opinion, due to the methyl groups attached to the xanthin nucleus. All About Coffee The constitution of methyl orange follows from the fact that on reduction by stannous chloride in hydrochloric acid solution it yields sulphanilic acid and para-aminodimethyl aniline. Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 1 "Austria, Lower" to "Bacon" In a similar way, by heating xylidine hydrochloride and methyl alcohol for some time in a closed vessel at about 300° C. cumidine is produced. Coal and What We Get from It Stain in methyl violet, 1 per cent. aqueous solution for three to five minutes. The Elements of Bacteriological Technique A Laboratory Guide for Medical, Dental, and Technical Students. Second Edition Rewritten and Enlarged. With this source also the positions of chloroform and iodide of methyl are inverted. Fragments of science, V. 1-2 Alkalinity of the Soluble Ash—Official Cool the filtrate from 9 and titrate with N/10 hydrochloric acid, using methyl orange as an indicator. All About Coffee His mental processes meandered because of too much methyl. The Big Fix If we assume that such groups are derived ultimately from levulose, we have to account for the detachment of the methyl group. Researches on Cellulose 1895-1900 About 7-8 grammes of the sample are dissolved in water, and made up to 100 c.c., and the total alkalinity determined by titrating 20 c.c. with N/1 acid, using methyl orange as indicator. The Handbook of Soap Manufacture This hexa-nitrate is insoluble in ether, alcohol, or in a mixture of those solvents, likewise in glacial acetic acid or in methyl alcohol. The Dyeing of Cotton Fabrics A Practical Handbook for the Dyer and Student It resembles methyl alcohol in its general properties. An Elementary Study of Chemistry The gases left consisted largely of methane, nitrogen, and methyl ether. The Black Star Passes The most useful are hæmatoxylin, carmine, and various aniline colors, among which may be mentioned, besides gentian violet, safranine, Bismarck brown, methyl violet. Elements of Structural and Systematic Botany For High Schools and Elementary College Courses Total alkali is estimated by dissolving 2 grammes in distilled water, and titrating when cold, with N/1 acid, using methyl orange as indicator. The Handbook of Soap Manufacture Acetic ether, methyl alcohol, acetone and glacial acetic acid, will also dissolve these nitrates. The Dyeing of Cotton Fabrics A Practical Handbook for the Dyer and Student The 94% alcohol is prepared at present at a cost of about 35 cents per gallon, which is about half the cost of the preparation of methyl alcohol. An Elementary Study of Chemistry It is beaten in this respect by chloride of methyl, ethylene, ammonia, sulphurous acid, nitrous oxide, and marsh gas. Scientific American Supplement, No. 365, December 30, 1882 Run into a flask 50 c.c. of the standard "acid," tint with methyl orange, and run in from a burette the solution of ammonia till neutralised. A Text-book of Assaying: For the Use of Those Connected with Mines. Free Carbonated Alkali.—The residue on the filter paper from the above determination is washed with hot water, and the aqueous filtrate titrated with N/10 acid, using methyl orange as indicator. The Handbook of Soap Manufacture Wood Spirit.—Wood spirit, the pure form of which is methyl alcohol, is one of the products of the destructive distillation of wood. The Chemistry of Hat Manufacturing Lectures Delivered Before the Hat Manufacturers' Association When wood is placed in an air-tight retort and heated, a number of compounds are evolved, the most important of which are the three liquids, methyl alcohol, acetic acid, and acetone. An Elementary Study of Chemistry Add to this methyl alcohol which is obtained by the destructive distillation of wood and is much more poisonous than ordinary ethyl alcohol. Creative Chemistry Descriptive of Recent Achievements in the Chemical Industries Ten c.c. of methyl alcohol are introduced upon the residue, and the evaporation again started. A Text-book of Assaying: For the Use of Those Connected with Mines. The amount of the boric acid radicle may be determined by incinerating 5-10 grammes of soap, extracting with hot dilute acid, filtering, neutralising this solution to methyl orange, and boiling to expel carbon dioxide. The Handbook of Soap Manufacture In fact, by stronger heating we may drive off all the methyl chloride and get the original Methyl Violet back again. The Chemistry of Hat Manufacturing Lectures Delivered Before the Hat Manufacturers' Association Thus blue litmus is changed to red, and yellow methyl orange is changed to red. An Elementary Study of Chemistry The new form of rubber made by the Germans, methyl rubber, is said to be a superior substitute for the hard variety but not satisfactory for the soft. Creative Chemistry Descriptive of Recent Achievements in the Chemical Industries Disconnect the receiver, and tint its contents with methyl orange. A Text-book of Assaying: For the Use of Those Connected with Mines. Both oils consist almost entirely of methyl salicylate and are practically identical in properties, the chief difference being that the former has a slight lævo-rotation, while the latter is inactive. The Handbook of Soap Manufacture This compound expels carbonic acid from its combinations, and forms a series of salts, which contain one atom of base and one atom of spiroylate of the oxide of methyl. The Art of Perfumery And Methods of Obtaining the Odors of Plants During this operation the platinum U tube, dried with the greatest care, has been fixed with a cork in a cylindrical glass vessel surrounded with chloride of methyl. Scientific American Supplement, No. 561, October 2, 1886 In the latter part of the war the methyl rubber was manufactured at the rate of 165 tons a month. Creative Chemistry Descriptive of Recent Achievements in the Chemical Industries Take 50 c.c., tint with methyl orange, and titrate with the normal solution of acid. A Text-book of Assaying: For the Use of Those Connected with Mines. Besides methyl salicylate, the oil contains triaconitane, an aldehyde or ketone, and an alcohol. The Handbook of Soap Manufacture The application of heat in the manufacture of the jelly from collodion- cotton and nitro-glycerine is absolutely necessary, unless some other solvent is used besides the nitro-glycerine, such as acetone, acetic ether, methyl, or ethyl-alcohol. Nitro-Explosives: A Practical Treatise The greater portion of the methyl alcohol was next removed by distillation under the reduced pressure of 160-200 mm. Scientific American Supplement, No. 841, February 13, 1892 The first consists of a platinum spiral worm-tube of about 40 c.c. capacity, immersed also in a bath of liquid methyl chloride, maintained at as low a temperature as possible, about -50�. Scientific American Supplement, No. 832, December 12, 1891 Tint with methyl orange, and run in from an ordinary burette normal solution of sulphuric acid until a pink tint is got. A Text-book of Assaying: For the Use of Those Connected with Mines. When methyl orange solution is used as indicator, titrations must be carried out cold. The Handbook of Soap Manufacture Crude wood spirit, which has been freed from acetic acid, consists in the main of a mixture of acetone and methyl- alcohol. Nitro-Explosives: A Practical Treatise Liquefied sulphurous acid, chloride of methyl, and carbonic acid have been successively delivered, to commerce. Scientific American Supplement No. 819, September 12, 1891 Considerable care requires to be exercised not to admit the vapor of methyl chloride into the U-tube, as otherwise violent detonations are liable to occur. Scientific American Supplement, No. 832, December 12, 1891 The indicators in most common use for acid and alkali titrations are methyl orange, litmus, and phenolphthalein. An Introductory Course of Quantitative Chemical Analysis With Explanatory Notes A good ink may be made of methyl violet 2 parts, alcohol 2 parts, sugar 1 part, glycerine 4 parts, and water 24 parts. The Boy Mechanic: Volume 1 700 Things for Boys to Do A weak solution of Congo red or methyl orange may be used. Nitro-Explosives: A Practical Treatise He had become so absorbed in watching that he was quite surprised to find himself in the cool darkness of his little shop, with its familiar odour of methyl, mustiness, and decay. The Country of the Blind, and Other Stories Fluorine instantly decomposes methyl chloride, with production of flame and formation of fluorides of hydrogen and carbon, liberation of chlorine, and occasionally deposition of carbon. Scientific American Supplement, No. 832, December 12, 1891 In the following discussion of the principles underlying the behavior of the indicators as a class, methyl orange and phenolphthalein will be taken as types. An Introductory Course of Quantitative Chemical Analysis With Explanatory Notes Besides the methyl derivative, however, others are possible, and several have been recently prepared, giving rise to a class of artificial alkaloids known as codeines. Scientific American Supplement, No. 415, December 15, 1883 It is obtained by the partial oxidation of methyl alcohol. The Gutenberg Webster's Unabridged Dictionary Section M, N, and O This compound, methyl alcohol, is the simplest primary alcohol, and it is characterized by the grouping .CH2OH. The Project Gutenberg Encyclopedia Volume 1 of 28 With the vapor of methyl chloride, as pointed out in the description of the electrolysis, violent explosions occur. Scientific American Supplement, No. 832, December 12, 1891 Of the common indicators methyl orange is the most sensitive toward alkalies and phenolphthalein toward acids; the others occupy intermediate positions. An Introductory Course of Quantitative Chemical Analysis With Explanatory Notes Caffeine, it will be remembered, is the methyl ester of theobromine, and can be prepared from it. Scientific American Supplement, No. 415, December 15, 1883 He obtained by this process acetate of methyl and ethyl sulphuric acid. Scientific American Supplement, No. 392, July 7, 1883 It is interesting to note that, whereas zinc methyl and ethyl give tertiary alcohols, zinc propyl only gives secondary alcohols. The Project Gutenberg Encyclopedia Volume 1 of 28 Up to recent times, chloride of methyl in a free state had received scarcely any industrial application, by reason of the difficulty of preparing it in a state of purity at a low price. Scientific American Supplement, No. 358, November 11, 1882 That methyl orange should be most sensitive toward alkalies is evident from the following considerations: Methyl orange is a weak base and, therefore, but little dissociated. An Introductory Course of Quantitative Chemical Analysis With Explanatory Notes The formation of a series of alkaloids under the name of codeines, by the substitution of other organic radicals instead of methyl in the codeine reaction, has already been alluded to. Scientific American Supplement, No. 415, December 15, 1883 Pabst proved this by letting methyl sulphuric acid act upon a mixture of acetic acid and ethyl alcohol. Scientific American Supplement, No. 392, July 7, 1883 Chlorine can combine with methyl or ethyl singly. Scientific American Supplement, No. 324, March 18, 1882 Pure liquid chloride of methyl is now an abundant product. Scientific American Supplement, No. 358, November 11, 1882 Pour over the carbonate in each beaker about 80 cc. of water, stir until solution is complete, and add two drops of methyl orange solution. An Introductory Course of Quantitative Chemical Analysis With Explanatory Notes Both theobromine and caffeine, its methyl derivative, have been made from xanthine, which itself can be formed from guanine, a constituent of guano. Scientific American Supplement, No. 415, December 15, 1883 At the conclusion of the operation there was no longer any methyl sulphuric acid present in the liquid. Scientific American Supplement, No. 392, July 7, 1883 Lastly, Perkin's mauve, dahlia, and methyl violet become of a grayish brown, which may be re-converted into a fine violet by washing in abundance of water. Scientific American Supplement, No. 363, December 16, 1882 Operation of the Apparatus.—As has been remarked above, the cylinder, A, is filled with chloride of methyl. Scientific American Supplement, No. 358, November 11, 1882 The amount of acid necessary to change the methyl orange to pink is a measure of one half of the carbonate present. An Introductory Course of Quantitative Chemical Analysis With Explanatory Notes There is no methyl, and the higher alcohols, as shown by Savalie’s method, only exist in traces. Travels in West Africa Ethyl alcohol and methyl ether have the same number of the same elements, C2H6O, but their molecular structure is not the same, and hence their properties differ. An Introduction to Chemical Science The action of acid is equally characteristic for methyl violet. Scientific American Supplement, No. 363, December 16, 1882 The reaction occurs in two stages by the production of methyl formate and its subsequent chlorination. The Riddle of the Rhine; chemical strategy in peace and war The comparison of the acid and alkali solutions was made, using methyl orange as an indicator, while the titration of the oxalic acid is made with the use of phenolphthalein. An Introductory Course of Quantitative Chemical Analysis With Explanatory Notes The solid product is washed with a second 4 l. of cold methyl alcohol. Organic Syntheses These hydrates are alcohols, and are known as methyl alcohol, ethyl alcohol, etc. An Introduction to Chemical Science On titrating with standard acid, it required 15.26 cc. for a change in color, using phenolphthalein, and 17.90 cc. additional, using methyl orange as an indicator. An Introductory Course of Quantitative Chemical Analysis With Explanatory Notes The sample was titrated with hydrochloric acid until the pink of phenolphthalein disappeared, and on the addition of methyl orange the solution was colored pink. An Introductory Course of Quantitative Chemical Analysis With Explanatory Notes No indicator is known which, like methyl orange, can be used within the solution, to show when the oxidation process is complete. An Introductory Course of Quantitative Chemical Analysis With Explanatory Notes In the meantime a second conical flask containing 1250 cc. of toluene is attached to the funnel, and a new charge of 150 g. of crude methyl red is placed in the paper. Organic Syntheses Purity.—The most important alcohols are methyl alcohol and ethyl alcohol. An Introduction to Chemical Science A new sample of the same weight required exactly 30 cc. of the same acid for neutralization, using methyl orange. An Introductory Course of Quantitative Chemical Analysis With Explanatory Notes One hundred cubic centimeters of the solution, when titrated with 0.1062 N hydrochloric acid, using methyl orange as an indicator, requires 38.60 cc. for complete neutralization. An Introductory Course of Quantitative Chemical Analysis With Explanatory Notes In standardizing a hydrochloric acid solution it is found that 47.26 cc. of hydrochloric acid are exactly equivalent to 1.216 grams of pure sodium carbonate, using methyl orange as an indicator. An Introductory Course of Quantitative Chemical Analysis With Explanatory Notes The crystals of methyl red are filtered off and washed with a little toluene. Organic Syntheses The hydrochloride of methyl red is only sparingly soluble in cold water, and is apt to separate in blue needles if the acidity is not sufficiently reduced. Organic Syntheses The alcoholic filtrate, obtained on digesting and washing the crude methyl red, contains a more soluble red by-product which gives a brownish-yellow solution in alkali. Organic Syntheses The methyl alcohol may be recovered with very little loss by distillation; it is, however, impracticable to attempt to recover any methyl red from the residue, owing to the tarry nature of the by-product. Organic Syntheses In the presence of methyl orange, the color change takes place only when the carbonate has been completely neutralized. An Introductory Course of Quantitative Chemical Analysis With Explanatory Notes The watery mother liquors from the crude methyl red are rendered alkaline with sodium hydroxide and distilled until no more dimethylaniline passes over. Organic Syntheses When the methyl red is crystallized from toluene, it sometimes separates in the form of bright-red lumps, probably on account of too rapid crystallization. Organic Syntheses |
| 随便看 |
英语例句辞典收录了117811条英语例句在线翻译词条，基本涵盖了全部常用单词及词组的例句翻译及用法，是英语学习的有利工具。