| 单词 | surfactant |
| 例句 | Instead of using something that might harm us, I mix a concoction of a surfactant, NaCl, and a chemical derivative of acetic acid—aka Dawn dish soap, salt, and vinegar. The Last Cuentista 2021-10-12T00:00:00Z They contain a surfactant, which is designed to hold in dirt and oils that can then be rinsed from the hair. How to wash your hair 2019-07-08T04:00:00Z The film absorbs some of the water that would otherwise form droplets, and it contains surfactants that come to the surface when moisture is present. My fog-free mirror is streaking. What can I do? 2021-03-12T05:00:00Z They contain surfactants, which keep loosened soil suspended in water, and chelating agents, which keep mineral deposits from forming. The dishwasher leaves my drinking glasses cloudy. What can I do? 2020-11-13T05:00:00Z This seasonal foaming hand soap is made with a list of luxurious ingredients, including coconut-derived surfactants and apple, chamomile and pear extracts. 9 Trader Joe's apple products to pick up this fall 2022-10-10T04:00:00Z The anti-fog film is softer than glass, and the surfactants make the film slightly tacky when dry. My fog-free mirror is streaking. What can I do? 2021-03-12T05:00:00Z When the film absorbs as much moisture as it can, droplets start to form, but the surfactants flatten them, so the water runs off in sheets. My fog-free mirror is streaking. What can I do? 2021-03-12T05:00:00Z Using vinegar mixed with hand dishwashing liquid was a smart approach, because vinegar is acidic and dish detergent is a surfactant — a cleaner that helps lift deposits and keeps them from reattaching to the surface. How to remove a stain from a fiberglass shower floor 2018-07-13T04:00:00Z What you’re paying for in a plain soap are surfactants — a short term for “surface active agents,” or the ingredients that send harmful microbes off your skin and down the drain. Why you don’t need to splurge on a pricey hand soap 2020-02-11T05:00:00Z For one dispersion, the researchers coated the particles with the surfactant lauryl sulfate and polymerized acrylic acid, which together provide a negative charge in the neutral to alkaline pH range. Recycling of water-based adhesive achieved by changing pH 2023-11-13T05:00:00Z Some decontamination techniques, such as surfactant leaching, also generate secondary waste streams and use up significant amounts of water and/or electricity. Decontamination method zaps pollutants from soil 2023-10-17T04:00:00Z The chemicals, when mixed with water, create a surfactant foam that binds to burning objects, to cut off oxygen supply and suppress the flames. King County joins the legal attack on PFAS manufacturers 2023-06-03T04:00:00Z These cells secrete a substance known as surfactant that helps to decrease the surface tension in the alveoli. Fundamentals of Biology 2015-01-01T00:00:00Z Recent research in Scientific Reports details how microplastics appear to flow alongside floating patches of oily and soapy substances called surfactants, which create distinct footprints in ocean currents. New Technique Can Map Ocean Plastics from Space 2023-05-05T04:00:00Z Most contain some combination of essential oils and surfactants. What is salt burn in plants and how do I fix it? 2023-04-06T04:00:00Z The surfactant therefore serves to change the wall tension so that small alveoli don't collapse and large alveoli are prevented from expanding too much. College Physics for AP Courses 2015-08-12T00:00:00Z A small amount of surfactant to the airway tissues reduces the effort or work needed to inflate those airways. Biology for AP Courses 2022-06-09T00:00:00Z The lungs begin producing surfactant, a substance that reduces surface tension in the lungs and assists proper lung expansion after birth. Anatomy and Physiology 2013-06-19T00:00:00Z Instead the smoothing came when the researchers added surfactants. New Technique Can Map Ocean Plastics from Space 2023-05-05T04:00:00Z Other medical measures for the twins, such as ventilators and surfactant, couldn’t compensate for her immature lungs. The tiniest babies: Shifting the boundary of life earlier 2022-05-11T04:00:00Z The surface tension for lung surfactant decreases with decreasing area. College Physics for AP Courses 2015-08-12T00:00:00Z Babies born prematurely sometimes do not produce enough surfactant. Biology for AP Courses 2022-06-09T00:00:00Z A type II alveolar cell is interspersed among the type I cells and secretes pulmonary surfactant, a substance composed of phospholipids and proteins that reduces the surface tension of the alveoli. Anatomy and Physiology 2013-06-19T00:00:00Z Because the satellites easily spot surfactants' smoothing effect, the substances can act as a tracer for microplastics' movements, the researchers say. New Technique Can Map Ocean Plastics from Space 2023-05-05T04:00:00Z To spread the mixture out, Zoll gently taps it with the tip of a pipette dipped in a surfactant—dish soap in this case. See Crystals Form a Mesmerizing World of Microscopic Landscapes 2022-03-23T04:00:00Z A similar problem occurs in newborn infants who are born without this surfactant—their lungs are very difficult to inflate. College Physics for AP Courses 2015-08-12T00:00:00Z Ammonium lauryl sulfate is a surfactant that can encourage infiltration of water into dried clay, and may make it easier to mechanically aerate clay soils. How to make the best of clay soil in the garden 2022-02-15T05:00:00Z However, pulmonary surfactant secreted by type II alveolar cells mixes with that water and helps reduce this surface tension. Anatomy and Physiology 2013-06-19T00:00:00Z DiBenedetto says tracing surfactants is a tactic “worth pursuing,” but more information is needed on their relationship with microplastics in a field setting. New Technique Can Map Ocean Plastics from Space 2023-05-05T04:00:00Z The comments from executives on post-earnings calls show that firms are grappling with higher costs on nuts and vegetable oils, surfactants and plastics as global supply chain glitches linger. From Kisses to Kleenex, consumer-product makers plot additional U.S. price hikes 2022-02-04T05:00:00Z Some success has been achieved in treating hyaline membrane disease by spraying a surfactant into the infant's breathing passages. College Physics for AP Courses 2015-08-12T00:00:00Z It is a surfactant that only helps prevent stool from hardening as bowel content progresses to the point of evacuation. Can low-dose naltrexone relieve pain? 2022-01-12T05:00:00Z Inhaled meconium after birth could obstruct a newborn’s airways leading to alveolar collapse, interfere with surfactant function by stripping it from the lungs, or cause pulmonary inflammation or hypertension. Anatomy and Physiology 2013-06-19T00:00:00Z Dish soap — really a detergent — includes surfactants, which can grab onto water and fat. Is soaking dishes worthwhile? Yes. Sometimes 2021-11-19T05:00:00Z It cited challenges particularly in areas such as surfactants, paper and tinplate due to a surge in costs. Reckitt lifts sales forecast after reporting upbeat quarter 2021-10-26T04:00:00Z Key to the system are the surfactants, which are baked onto the film and don’t wash off. What’s causing the streak in my fog-free mirror? 2021-03-30T04:00:00Z One is for a pulmonary surfactant, a lubricating secretion that helps lungs expand and contract. Fish had the genes to adapt to life on land—while they were still swimming the seas 2021-02-10T05:00:00Z Once type II cells have differentiated, they begin to secrete small amounts of pulmonary surfactant. Anatomy and Physiology 2013-06-19T00:00:00Z Other chemicals frequently added to paints to help stabilize the pigments include surfactants. A Butterfly’s Brilliant Blue Wings Lead to Less Toxic Paint 2020-11-13T05:00:00Z The researchers focused their efforts on a lung disorder called surfactant deficiency, not cystic fibrosis. In utero intervention to stem the damage of cystic fibrosis 2020-07-28T04:00:00Z Their lungs are particularly delicate: the organs lack the slippery substance, called surfactant, that prevents the airways from collapsing upon exhalation. Survival of the littlest: the long-term impacts of being born extremely early 2020-06-01T04:00:00Z It includes additional pulmonary surfactant genes that the ray-finned fishes lack, as well as DNA for specifying five toes, connecting nerves to limb muscles, and for sensitizing the brain to react fast. Fish had the genes to adapt to life on land—while they were still swimming the seas 2021-02-10T05:00:00Z More alveolar precursors develop, and larger amounts of pulmonary surfactant are produced. Anatomy and Physiology 2013-06-19T00:00:00Z “This ‘surfactant effect’ is widely utilized to prevent misting of surfaces in many everyday situations.” The do's and don'ts of wearing a face mask correctly (and comfortably) 2020-04-16T04:00:00Z Product labels typically refer to surfactants only as “other ingredients”. Formulations of glyphosate-based weedkillers are toxic, tests show 2020-01-23T05:00:00Z Macrophages protect the body from infections, but they also help recycle lung surfactant, a mix of proteins and lipids that coats the inside of lung air sacs and aids gas exchange. How safe is vaping? New human studies assess chronic harm to heart and lungs 2019-11-26T05:00:00Z Then surfactant genes, new nervous system genes, and other innovations enabled lobe-finned fish to leave the water temporarily. Fish had the genes to adapt to life on land—while they were still swimming the seas 2021-02-10T05:00:00Z Fetal breathing movements involve muscle contractions that cause the inhalation of amniotic fluid and exhalation of the same fluid, with pulmonary surfactant and mucus. Anatomy and Physiology 2013-06-19T00:00:00Z A breakthrough was made ten years ago, with the report of a specially designed surfactant molecule that enables the synthesis of such materials18,19. Birth of a class of nanomaterial 2019-10-14T04:00:00Z If something badly inflames the lungs, he adds, the lipids in the surfactant might break down and overwhelm the immune cells, filling them with fat. Hunt for the Cause of a Mysterious Vaping Illness Suggests Multiple Mechanisms of Damage 2019-09-17T04:00:00Z Chemists solve the problem by increasing the surface area of the oil particles and adding ingredients, called surfactants and emulsifiers, to prevent separation. How much pot in that brownie? Chocolate can throw off tests 2019-08-26T04:00:00Z Writing in Nature, Li et al.8 report an approach to tune the wettability of chemically robust hydrophilic surfaces by electrically controlling the adsorption and desorption of molecules called surfactants. Droplet motion electrically controlled 2019-08-20T04:00:00Z Pulmonary surfactant is critical for inflation to occur, as it reduces the surface tension of the alveoli. Anatomy and Physiology 2013-06-19T00:00:00Z In the 1930s, the chemical industry created surfactant compounds with a unique ability to repel both grease and water, because their carbon chains were swaddled in fluorine atoms. Tainted water: the scientists tracing thousands of fluorinated chemicals in our environment 2019-02-05T05:00:00Z Fortunately, in the early 1970s, a technique was developed to combine these fat-soluble compounds with a chemical called a surfactant to get them into water. If you’ve had anesthesia, you can likely thank this veterinarian who just won a top science prize 2018-09-11T04:00:00Z The approval of surfactants, soap-like substances needed in the lungs, helped premature babies breathe and was a leap in neonatal technology in the 1990s. How anti-abortion activists use cutting edge science to justify ever stricter laws 2018-07-13T04:00:00Z Under an electric current, surfactants are adsorbed on the hydrophilic layer. Droplet motion electrically controlled 2019-08-20T04:00:00Z Prior to 26 weeks, sufficient pulmonary surfactant is not produced, and the surfaces for gas exchange have not formed adequately; therefore, survival is low. Anatomy and Physiology 2013-06-19T00:00:00Z Glyphosate is also tested by regulators in isolation, even though some research indicates that the surfactants it is mixed with in RoundUp may increase its toxicity by a factor of up to 100. EU on brink of historic decision on pervasive glyphosate weedkiller 2017-10-24T04:00:00Z Sulfate is a very common type of surfactant, and people who are concerned about too much shampoo think it works too well. Truth, lies, and hair products 2016-09-11T04:00:00Z A likely source for the surfactants and polymers are the wood barrels used to age whisky. At the Bottom of a Whisky Glass, a Beautiful Experiment 2016-08-19T04:00:00Z Depending on the direction of the current, charged surfactants are transported either towards or away from the solid surface, inducing surfactant adsorption or desorption, respectively. Droplet motion electrically controlled 2019-08-20T04:00:00Z However, pulmonary surfactant helps to reduce the surface tension so that the alveoli do not collapse during expiration. Anatomy and Physiology 2013-06-19T00:00:00Z The discovery of surfactants, for example, helped all premature babies breathe better, but benefitted African-American babies in particular because they were more often premature. The Costs of Inequality: More Money Equals Better Health Care and Longer Life 2016-02-23T05:00:00Z Shampoos contain a type of molecule called surfactants. Truth, lies, and hair products 2016-09-11T04:00:00Z Called a surfactant protein, this newly discovered protein may prove useful for treating breathing problems in people, the researchers note. Xeroxed lung gene helps salamanders breathe through their skin 2016-01-08T05:00:00Z For instance, the surfactants tend to adsorb to the solid surface and increase the contact angle even without an applied electric current. Droplet motion electrically controlled 2019-08-20T04:00:00Z Type II pulmonary cells develop and begin to produce small amounts of surfactant. Anatomy and Physiology 2013-06-19T00:00:00Z The lawyer for the farmer finally realizes the surfactant issue. DuPont’s deadly deceit: The decades-long cover-up behind the “world’s most slippery material” 2016-01-04T05:00:00Z Lungs typically contain a compound called surfactant, or pulmonary surfactant, that helps with breathing. Deep-Diving Dolphins Avoid 'Bends' with Powerful Lungs 2015-07-24T04:00:00Z March of Dimes funded the research that developed surfactant therapy to help the development of premature lungs, Crystal Poradzisz said. Indiana baby born weighing less than 2 pounds has big impact 2015-02-24T05:00:00Z With paintings, a variety of organic solvents are used, but the most common solvent is water, often with chelating agents, surfactants or salts to control pH. Modern Chemistry Techniques Save Ancient Art 2014-06-28T04:00:00Z As the fetus grows, the respiratory system continues to expand as more alveoli develop and more surfactant is produced. Anatomy and Physiology 2013-06-19T00:00:00Z Almost everything in the cooler was a synthesized liquid surfactant, with lab-manufactured ingredients engineered to smell good and add moisture to replace the oils they washed away. My No-Soap, No-Shampoo, Bacteria-Rich Hygiene Experiment 2014-05-22T04:00:00Z Prematurely born babies benefit from surfactant manufactured from cows, Fahlman said, because the babies can't produce enough of the substance at such a young age. Deep-Diving Dolphins Avoid 'Bends' with Powerful Lungs 2015-07-24T04:00:00Z She received shots and surfactant therapy to help her immature lungs develop. Indiana baby born weighing less than 2 pounds has big impact 2015-02-24T05:00:00Z The most familiar use of soap is to wash our skin and hair, but sodium-based surfactants are also used to mix products like paints and cosmetics. Getting rid of dirt - and murder victims 2014-05-02T23:21:49Z Compounds that lower water’s surface tension are known as surfactants. Surfactant Science: Make a Milk Rainbow 2014-03-13T18:00:00Z In particular, scientists discovered that hyaline membrane disease resulted from a deficiency of surfactant, a substance that lines the air sacs in the lungs. After the Fact: A Kennedy Baby’s Life and Death 2013-07-29T16:13:03Z Magnetic soap, shown here in a droplet attracted to a magnet, was the starting point of the research These magnetic surfactants are long chains of atoms, with metal atoms at one end. 'Magnetic emulsions' clean up oil 2012-06-21T14:22:17Z They disperse pieces of graphite in water and surfactant, and use ultrasound to peel off layers of carbon: a more pristine graphene as fewer chemicals are involved in its production. Production: Beyond sticky tape 2012-03-14T22:50:43.050Z Premature babies often do not yet make their own surfactants, making it extremely difficult to breathe. F.D.A. Backs Surfaxin, Respiratory Distress Drug For Babies 2012-03-07T00:54:32Z Dr. Avery ultimately identified a mix of fat and proteins in the lungs that came to be called surfactant. Mary Ellen Avery, Premature Babies? Savior, Dies at 84 2012-01-12T01:59:22Z Such surfactants are secreted by many oil-eating bacteria and render the oil easier for them to digest. Gulf Floor Fouled by Bacterial Oil Feast 2011-02-22T15:58:00Z At the heart of both ideas are what are known as surfactants - short for surface-active agents - that are based on metal atoms, which respond to magnetic fields. 'Magnetic emulsions' clean up oil 2012-06-21T14:22:17Z Emulsions consist of droplets of one fluid immersed in a second, immiscible fluid and stabilized through the addition of surfactants or emulsifiers. Editors' Choice 2011-02-03T19:25:02.600Z The surfactants now used to treat these infants are derived from the lungs of pigs or cows. F.D.A. Backs Surfaxin, Respiratory Distress Drug For Babies 2012-03-07T00:54:32Z She helped prove that it was the absence of surfactant — not the presence of membranes — that caused infant deaths. Mary Ellen Avery, Premature Babies? Savior, Dies at 84 2012-01-12T01:59:22Z These include surfactants, the active ingredient in many shampoos, and emulsifiers, which prevent separation in suspension liquids. Skin Deep: More Pressure on Organic Claims for Health and Beauty Products 2010-07-14T18:56:00Z One end of these surfactant molecules is "hydrophilic", or water-loving, and the other "hydrophobic", or water-fearing. 'Magnetic emulsions' clean up oil 2012-06-21T14:22:17Z The finer the breakdown is, the easier it becomes for both big creatures like bluefin tuna or swordfish and tiny creatures like krill or shrimp to ingest the oil and the surfactants themselves. Gulf Oil Threatens an Underwater 'Rainforest' 2010-06-14T06:40:00Z Surfaxin is a surfactant, a liquid that coats the air sacs in the lungs and helps keep them open. F.D.A. Backs Surfaxin, Respiratory Distress Drug For Babies 2012-03-07T00:54:32Z Babies who spend nine months in the womb almost always develop surfactants before birth, and continue to produce them throughout life. Mary Ellen Avery, Premature Babies? Savior, Dies at 84 2012-01-12T01:59:22Z Discovery estimates that about 90,000 premature babies are treated with a surfactant in the United States each year. F.D.A. Backs Surfaxin, Respiratory Distress Drug For Babies 2012-03-07T00:54:32Z Advancing her experiments, he developed a surfactant replacement, made from the lungs of cows. Mary Ellen Avery, Premature Babies? Savior, Dies at 84 2012-01-12T01:59:22Z |
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