| 单词 | chromatography |
| 例句 | Gas chromatography of air samples might reveal blips of difference between substances released over a Glasgow football match, a committee meeting on academic promotions, and a summer beach on Saturday afternoon, all highly important. The Lives of a Cell 1974-01-01T00:00:00Z “We use liquid chromatography to test all the levels of the cannabinoids in the field,” he told this reporter. Seven Buds for Seven Brothers 2019-03-06T05:00:00Z Thackeray and his colleagues tested several of Shakespeare's clay tobacco pipes "using a sophisticated technique called gas chromatography mass spectrometry," the scientist writes. Was Shakespeare a stoner? Scientist finds cannabis residue in playwright's pipes 2015-08-10T04:00:00Z To do this, they trek to farms when a crop is at the peak of ripeness, taking portable gas chromatography devices with them. “Modern chicken has no flavor” — let’s make it in a lab 2013-03-17T16:00:00Z The next stage was to combine our nihydrin technique with a process called high-performance liquid chromatography, which can separate out different kinds of amino acids. Ever wonder how your body turns food into fuel? We tracked atoms to find out 2023-09-05T04:00:00Z Researchers have made their own silica gel, а staple in chromatography machines, which separate chemical compounds from mixtures. Scientists in Russia struggle in a world transformed by its war with Ukraine 2023-11-09T05:00:00Z The usual method used to detect such trace amounts involves chromatography and mass spectrometry, is time-consuming and expensive, and requires complex equipment and experienced personnel. Tracking down environmental toxins 2023-10-27T04:00:00Z First, gas chromatography and mass spectrometry were used to identify and measure the presence of geosmin and other compounds in both the water and fish. Pinpointing the emergence of muddy flavors in your fish 2023-10-19T04:00:00Z Other methods include gas chromatography/mass spectrometry systems such as the InspectIR test, which received emergency use authorization from the U.S. Astronomy Tool Can Now Detect COVID in Breath 2023-05-12T04:00:00Z The Philadelphia water department “has analyzed a variety of samples from the river and raw water basin using infrared spectroscopy and gas chromatography,” city officials said. Officials: No sign of contamination in Philadelphia water 2023-03-27T04:00:00Z But he confirmed that the lab’s gas chromatography–mass spectrometry testing had been picking up indications of the drug’s presence in samples for years. LASD saw signs of deadly street drug 4 years ago, told health officials about it this month 2023-03-22T04:00:00Z The researchers extracted uracil, niacin and some other organic compounds in the Ryugu samples by soaking the material in hot water and then performing analyses called liquid chromatography and high-resolution mass spectrometry. Asteroid discovery suggests ingredients for life on Earth came from space 2023-03-21T04:00:00Z To identify the specific contents of the vessels, an Egyptian–German team analysed the mixtures using a technique called gas chromatography–mass spectrometry, at a National Research Centre laboratory in Giza, Egypt. Surprising Chemicals Were Used to Embalm Egyptian Mummies 2023-02-09T05:00:00Z Such differences in arrival times are used as an analytical tool in gas chromatography. College Physics for AP Courses 2015-08-12T00:00:00Z Capillary action is the basis for thin layer chromatography, a laboratory technique commonly used to separate small quantities of mixtures. Chemistry 2019-02-14T00:00:00Z Additional methods for the identification of plant pigments include various types of chromatography that separate the pigments by their relative affinities to solid and mobile phases. Biology for AP Courses 2022-06-09T00:00:00Z Other geologists use gas chromatography to analyze liquids and gases trapped in glacial ice or rocks. An Introduction to Geology 2017-01-01T00:00:00Z Next, the researchers used a technique called liquid chromatography to pull out proteins from the muscle samples, and another method called mass spectrometry to identify them. Will you keep winning races into old age? Your cells hold clues 2022-05-19T04:00:00Z The researchers put the samples on ice and brought them to Morlock’s lab, where they used a technique called high-performance thin-layer chromatography to analyze the mucus’ chemical makeup. These dolphins might be self-medicating 2022-05-19T04:00:00Z We also set about investigating the final step in the mosquito host-seeking activity – landing on a suitable host followed by biting – by using ultra-performance liquid chromatography with ion mobility high-resolution mass spectrometry. We’re a step closer to figuring out why mosquitoes bite some people and not others 2021-05-24T04:00:00Z They rely on a variety of technologies, including mass spectrometry and gas chromatography, but some of the most promising ones—in terms of affordability and ease of use—are based on nanomaterial-based sensors. Forget throat swabs: Dutch company claims its breathalyzer can help sniff out COVID-19 2021-05-17T04:00:00Z They work with gas chromatography mass spectrometry instruments that separate chemical mixtures and identify the components at a molecular level. Inside the little-known world of flavorists, who are trying to make plant-based meat taste like the real thing 2019-11-04T05:00:00Z Sending urine to a laboratory, which uses gas or liquid chromatography to render results more accurately, can cost thousands of dollars. My Years in the Florida Shuffle of Drug Addiction 2019-10-14T04:00:00Z Using a technique frequently used in modern illicit drug testing called liquid chromatography tandem mass spectrometry, she and her fellow researchers hunted for chemical signatures in the sample. Archaeologists find richest cache of ancient mind-altering drugs in South America 2019-05-06T04:00:00Z My father touched on cellular activities, radioisotopes, chromatography, and also more general matters. Family Medicine 2019-03-04T05:00:00Z The researchers removed the film from the rock, dissolved it, and used gas chromatography and mass spectrometry to look for preserved organic molecules. This fossil is one of the world’s earliest animals, according to fat molecules preserved for a half-billion years 2018-09-20T04:00:00Z The team used a technique known as gas chromatography–mass spectrometry to identify elemental variants known as isotopes. Animal fat on ancient pottery shards reveals a nearly catastrophic period of human prehistory 2018-08-13T04:00:00Z Arnold uses chromatography paper, water, food coloring and a felt pen. 1st of Christa McAuliffe’s lost lessons released from space 2018-08-07T04:00:00Z Taste test: Integrated Beverage Group has a business making cheap knockoffs of popular, expensive vintages, using chromatography and other scientific techniques to replicate the chemical composition of pricey wines — at half the price. California Inc.: A totally #MeToo moment for movie capers 2018-06-04T04:00:00Z At the lab researchers run the sewage through liquid chromatography, which separates and organizes the chaotic compounds into straight lines, like students in a fire drill. Sewage Is Helping Cities Flush Out the Opioid Crisis 2018-05-25T04:00:00Z The scientists used a portable, briefcase-size device that pulls air from the surface of the skin and collects VOCs in a filter for later laboratory analysis, using gas chromatography–mass spectrometry. Is Malaria's Peculiar Odor the Key to Its Conquest? 2018-05-14T04:00:00Z Burns’ lab uses more than a half-dozen gas chromatography and mass spectrometry machines to detect trace amounts of identifiable compounds that might indicate fire-smoke markers. How West Coast winemakers are adapting to climate change 2018-05-14T04:00:00Z Forensic inquiries into chemical attacks typically involve standard tools such as gas and liquid chromatography, which are used to separate a substance into its components. Attacks in UK and Syria highlight growing need for chemical-forensics expertise 2018-04-12T04:00:00Z Four lessons - on effervescence or bubbles, chromatography, liquids and Newton’s laws - will be filmed by Acaba and Arnold, then posted online by the Challenger Center, a not-for-profit organization supporting science, technology, engineering and math education. Christa McAuliffe’s lost lessons finally taught in space 2018-01-19T05:00:00Z Four lessons — on effervescence or bubbles, chromatography, liquids and Newton’s laws — will be filmed by Acaba and Arnold, then posted online by the Challenger Center, a not-for-profit organization supporting science, technology, engineering and math education. Christa McAuliffe’s lost lessons finally taught in space 2018-01-19T05:00:00Z That machine is called a liquid chromatography mass spectrometer, and very crudely put, it separates out all the different parts of the plasma by mass. This library of street drugs predicts mass overdoses 2017-11-08T05:00:00Z They used a technique known as gas chromatography to separate and identify the odor compounds. Pesticide-spiked punch lures mosquitoes to their doom 2017-08-24T04:00:00Z They also figured in another pioneering separation technique — polyamide thin-layer chromatography. Chromatography: Shirts off to boost separation methods : Nature : Nature Research 2017-03-21T04:00:00Z Twelve individual seeds of 17 bitter lines, and 12 pooled seeds from each of 16 sweet lines were analysed for derivatized saponins using gas chromatography/mass spectrometry. The genome of Chenopodium quinoa : Nature : Nature Research 2017-02-07T05:00:00Z Direct connection through an instrument's data port, allows devices such as balances, pH meters, and even high-performance liquid chromatography systems to be monitored or, in some cases, controlled. The Internet of Things comes to the lab 2017-01-29T05:00:00Z A truffle a few hours or a day old is a far different culinary experience from one that is four days or a week old, an observation backed by gas chromatography. Has a Start-Up Found the Secret to Farming the Elusive Truffle? 2016-11-24T05:00:00Z There is a chemistry lab, a photonics lab, a chromatography lab. The Deflategate Scientists Unlock Their Lab 2016-09-21T04:00:00Z Researchers used high-performance liquid chromatography to identify the presence of plant-based indigo dye in five of the eight fabric samples, which ranged in age from 6,200 to around 1,500 years old. The Super-Ancient Origins of Your Blue Jeans 2016-09-14T04:00:00Z Twelve individual seeds of 17 bitter lines, and 12 pooled seeds from each of 16 sweet lines were analysed for derivatized saponins using gas chromatography/mass spectrometry. The genome of Chenopodium quinoa : Nature : Nature Research 2017-02-07T05:00:00Z The gas that they then ejected was "quantitatively collected in a series of 100-ml syringes and analyzed by gas chromatography." A brief medical history of farting 2016-06-07T04:00:00Z The alternative, a mix of chromatography and mass spectrometry, is more sensitive, but requires expensive equipment and trained staff. Particle biology 2015-10-08T04:00:00Z The UCL team tested around 70 products overall, using two methods - nuclear magnetic resonance spectroscopy and high performance thin layer chromatography - to study their composition. Herbal food supplement labels 'can be misleading' - BBC News 2015-07-13T04:00:00Z Researchers in France who analysed some particularly well-regarded pinot noir wine, using a method known as gas chromatography mass spectrometry, recently made a surprising discovery. Sniffing out the next big thing in chocolate and gobstoppers - BBC News 2015-06-14T04:00:00Z Frustrated but determined to do better, Dawson devoted herself to adapting chromatography and mass spectrometry — techniques she knew from her work in agriculture and environmental science — for use in forensic cases. Forensic science: The soil sleuth 2015-04-20T04:00:00Z The researchers identified histamine, along with a cornucopia of other chemicals, using nuclear magnetic resonance spectroscopy and gas chromatography/mass spectrometry. Chemical Cocktail Lures Bedbugs and Coaxes Them to Stay Put 2014-12-25T05:00:00Z "Too darn hot for me to taste," said Cliff Calloway, a chemistry professor at Winthrop who tested the Reaper for more than five years using gas chromatography. From pot to hot: How a grower produced world's most fiery chile pepper 2014-11-26T05:00:00Z She uses liquid chromatography, a process that creates a unique stain for each ingredient. Dirt, corn, twigs, soybeans and other fillers are appearing in coffee To identify fillers in coffee that may be added on purpose, the researchers use liquid chromatography, which sensitively separates components within a mixture for identification. Your Coffee Might Have Wheat or Twigs Hidden In It 2014-08-11T04:00:00Z He discusses the potential of gas chromatography to detect alcoholic forgeries trying to be passed off off as premium brands. 'Proof' Drinks in the Science of Alcohol 2014-07-21T04:00:00Z It will do so even when the agent’s level in the soil is too low for chromatography to detect the poison directly. Mustard plants, not mustard gas 2014-07-17T04:00:00Z As movers rolled off his last cart of equipment — an automatic chromatography machine, centrifuge and balance — a move months in the making was became final. Debated Montgomery County biotechnology incubator officially closes its doors Monday The team used a technique called gas chromatography to separate the chemicals bound up in the ancient samples. Faeces reveal Neanderthals' diet 2014-06-25T04:00:00Z To understand what went into an ancient Jiahu drink, McGovern used analytical tools such as gas chromatography, which effectively vaporizes chemical samples to help identify them. The Science of Booze In this activity you'll use paper chromatography to investigate the pigments in flowers. Springtime Science: Exploring the Pigments in Flowers 2013-05-09T14:15:05.233Z Octadecane was used as an internal standard to quantify the substrate and product from the reactions by gas chromatography using response factors determined by using known concentrations of standards. High-level semi-synthetic production of the potent antimalarial artemisinin 2013-04-26T14:21:10.803Z Does the red in Skittles look the same as the red in M&Ms when you test both using paper chromatography? Solution Science: Colorful Candy Chromatography 2013-04-04T14:45:00.743Z Skeptical, Mr. Bosland got some seeds and was astonished to find that the peppers he grew averaged more than one million Scovilles, as measured by high performance liquid chromatography. Arms Race to Grow World's Hottest Pepper Goes Nuclear 2013-03-26T02:39:33Z So, the researchers isolated the secretions and ran them through gas chromatography–mass spectrometry to determine the nature of the substances in them. Parasitic Wasps Master Microbiology In Addition To Neurochemistry 2013-01-07T21:15:05.437Z In this activity you'll get to use paper chromatography to investigate if the pigments from one type of red flower are different from those in another type of red flower. Springtime Science: Exploring the Pigments in Flowers 2013-05-09T14:15:05.233Z In the 1950s, ultraviolet and infrared spectrometry, along with x-ray diffraction and gas chromatography, found forensic applications, and in 1966, scientists introduced Fourier-transformed infrared spectroscopy and atomic absorption spectroscopy. Cold Case Files: Tycho Brahe Not Poisoned After All 2012-11-19T13:45:03.780Z Positive assays are followed by bioactivity-guided fractionation to isolate the active natural products with thin layer–, column-, and/or high-performance liquid chromatography. [Essay] IBI* Series Winner: Student-Directed Discovery of the Plant Microbiome and Its Products 2012-10-28T19:55:58.967Z Only chemical chromatography that measures several samples for their average level of capsaicin, the chemical that gives peppers their bite, can establish a record claim. Arms Race to Grow World's Hottest Pepper Goes Nuclear 2013-03-26T02:39:33Z The liquid chromatography and mass spectrometry testing equipment being used at the anti-doping lab can screen up to 400 samples a day for more than 240 banned substances in less than 24 hours. Anti-doping lab to become research centre 2012-08-01T16:53:41Z In paper chromatography the pigments move up the paper with the liquid and are separated based on the solubility of the pigments. Springtime Science: Exploring the Pigments in Flowers 2013-05-09T14:15:05.233Z Most rely on bulky gas chromatography and mass spectroscopy systems to identify airborne compounds. Vapor Trail: Electronic Noses Sniff Bad Breath for Signs of Disease 2012-07-30T10:45:00.210Z Goodman has a high-performance liquid chromatography set-up in one corner of his lab, a vestige of Bayer's operations, which employed 2,000 researchers. Biotechnology investment: Gains and losses 2012-05-30T17:50:51.890Z Wysocki conducted an experiment involving gas chromatography, a device that uses heat to separate the various molecules in something like cilantro, so subjects can take a whiff of each separate compound. Taster's Choice: Why I Hate Raw Tomatoes and You Don't 2012-05-29T15:15:00.207Z Later, he loaded the extract, along with 95 other samples, into a high-performance liquid chromatography machine, which separates out each chemical component. Plant biotechnology: Make it a decaf 2012-03-14T18:20:28Z It’s called gas chromatography/mass spectrometry, or GC/MS for short, and if testing equipment is maintained appropriately, the odds of it producing a false positive result are infinitesimally low. Ryan Braun and the MLB's 'Unbeatable' Drug Test 2012-02-24T20:35:18Z In total, the liquid chromatography and mass spectrometry testing equipment will screen each sample for more than 240 banned substances in less than 24 hours. Olympics-Doping: Journey of a sample at London 2012 2012-01-19T19:18:48Z Dr. Riquelme used gas chromatography and additional techniques to analyze the proteins, lipids and other components of python plasma in fed and starving pythons. Python Digestion Study Holds Promise for Human Heart Health 2011-10-27T18:15:54Z In this procedure, paper chromatography separated the pigments by the size of their molecules. Find the Hidden Colors of Autumn Leaves 2011-10-20T14:15:00.257Z In 1987, he got a job at the University of Campinas and installed a high-performance liquid chromatography machine in his lab, allowing him to process samples more efficiently. Plant biotechnology: Make it a decaf 2012-03-14T18:20:28Z At Georgetown, she learned to use gas chromatography and mass spectrometry to measure the amount of chemical in the fabric patches. Dry-cleaned clothes a health risk? Maybe. 2011-09-04T01:18:04Z "The Commission examined the competitive effects of the proposed acquisition in the areas of ion chromatography, high pressure liquid chromatography, mass spectrometry, consumables, related software and distribution," it said in a statement. EU approves Thermo Fisher buy of Dionex 2011-05-13T14:42:58Z They re-examined the contents with today's better equipment, like liquid chromatography and mass spectrometers. The Origin of Life 2011-03-27T15:45:00.637Z Uncover these hidden colors of fall by separating plant pigments with a process called paper chromatography. Find the Hidden Colors of Autumn Leaves 2011-10-20T14:15:00.257Z Silica gel flash chromatography was used to characterize the active ingredients in petals, and the active components were tested in agar plugs fed to beetles. Editors' Choice 2011-01-20T19:25:02.033Z Dionex is the world's third-biggest player in chromatography systems, used in analysis for everything from drug compounds to water quality and food contaminants. Thermo Fisher to buy Dionex for $2.1 billion 2010-12-13T18:49:00Z To do this, the oils were broken into their component parts and analysed using gas chromatography and mass spectrometry. Perfume: Making sense of scents 2010-12-09T10:31:00Z Then they sent them off to a laboratory in Massachusetts that used a technique called high-performance liquid chromatography to determine how much fructose, glucose and sucrose were in each sample. Study: High-fructose corn syrup in soda has more fructose than advertised 2010-10-27T23:05:00Z At Harvard, the scientists used Fourier transform infrared spectroscopy and gas chromatography/mass spectrometry to analyze the samples. The Improvisational Remedies of an Art Healer 2010-10-25T19:50:00Z It doesn't look much like chromatography, but the principle's the same. The Hate Disease It introduced the first ion chromatography system for water analysis shortly after its founding in 1975. Thermo Fisher to buy Dionex for $2.1 billion 2010-12-13T18:49:00Z "The combined company has the most extensive chromatography offering, which is the largest category of scientific instruments from a market perspective," Thermo Fisher Chief Executive Marc Casper said in a telephone interview. Thermo Fisher to buy Dionex for $2.1 billion 2010-12-13T18:49:00Z |
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