| 单词 | catalysis |
| 例句 | This strategy for the biosynthesis of functional protein crystals holds much promise for applications in medicine, catalysis, and biomaterials engineering. Engineering bacteria to biosynthesize intricate protein complexes 2023-11-15T05:00:00Z Accordingly, the range of possible applications in science and technology is broad, spanning from information processing to catalysis. Crystallization as the driving force 2023-09-25T04:00:00Z The preciseness of the catalysis will allow the streamlining of industrial processes, such as in the production of medicines. Novel ligands for transition-metal catalysis of photoreactions 2023-09-19T04:00:00Z Possible applications include hydrogen catalysis and solar energy generation. Step change in upconversion the key to clean water, green energy and futuristic medicine 2023-09-18T04:00:00Z As an important illustration of homogeneous catalysis, consider the earth’s ozone layer. Chemistry 2019-02-14T00:00:00Z Active site amino acid residues have their own acidic or basic properties that are optimal for catalysis. Biology for AP Courses 2022-06-09T00:00:00Z The reaction worked, proving that proline was an excellent catalyst and that an amino acid can drive what is known as asymmetric catalysis. Nobel Prize in Chemistry Awarded to Scientists for Tool That Builds Better Catalysts 2021-10-06T04:00:00Z The two laureates were rewarded for independently developing a third type of catalysis, which builds upon small organic molecules. Nobel Prize in chemistry awarded to duo who made a tool to build molecules in an environmentally friendly way 2021-10-06T04:00:00Z Benjamin List of the Max Planck Institute for Coal Research in Germany and David MacMillan of Princeton University are honored for developing a new method in catalysis. Nobel honors molecule builders who made chemistry easier and greener 2021-10-06T04:00:00Z This is an example of catalysis, a topic discussed later in this chapter. Chemistry 2019-02-14T00:00:00Z In these reactions, α-KG binds to the active site of the enzyme to aid catalysis. Tumour metabolites hinder DNA repair 2020-06-02T04:00:00Z Two years earlier, Dr. MacMillan had left a position at Harvard University where he was researching asymmetric catalysis in metals. Nobel Prize in Chemistry Awarded to Scientists for Tool That Builds Better Catalysts 2021-10-06T04:00:00Z The use of an excited neutral organic radical is rare in photoredox catalysis. Strong chemical reducing agents produced by light 2020-03-31T04:00:00Z Mr. Tao also was tasked with leading research on catalysis — how chemical reactions can be enhanced by catalysts — for the National Natural Science Foundation of China. Kansas indictment reveals new details of Chinese high-tech recruiting 2020-01-17T05:00:00Z Methods for the directed evolution of the resulting modified enzymes are also required to optimize catalysis in active sites. Catalytic machinery of enzymes expanded 2019-05-26T04:00:00Z In a second step, the covalent bond is broken through a hydrolysis reaction, releasing the product of the enzymatic reaction and restoring the reactive nucleophile for a second round of catalysis. Enzymes engineered to trap reaction intermediates 2018-12-11T05:00:00Z These substances were named catalysts, and the process was called catalysis. Nobel Prize in Chemistry Awarded to Scientists for Tool That Builds Better Catalysts 2021-10-06T04:00:00Z “Today’s Nobel Prize in chemistry highlights the tremendous role of chemistry in contributing to many areas of our lives including pharmaceuticals, detergents, green catalysis and biofuels,” she said. Frances H Arnold, George P Smith and Gregory P Winter win Nobel prize in chemistry 2018-10-03T04:00:00Z Over my 30+ year career, I have authored patents in environmental catalysis, CO2 capture, Electrolysis, and Solar Power. E.P.A. Officials, Disheartened by Agency’s Direction, Are Leaving in Droves 2017-12-22T05:00:00Z Some of these activation modes are also widely used by enzymes; for example, enamine catalysis is used by class I aldolases7. Catalytic machinery of enzymes expanded 2019-05-26T04:00:00Z However, it remains an unsolved problem in catalysis, as typically it involves expensive1,2,3,4 or corrosive oxidants or reaction media5,6,7,8 that are not amenable to commercialization. Mild oxidation of methane to methanol or acetic acid on supported isolated rhodium catalysts 2017-11-28T05:00:00Z Chemists and pharmaceutical researchers often only want one version of a molecule, and typical catalysis produced both versions. Nobel Prize in Chemistry Awarded to Scientists for Tool That Builds Better Catalysts 2021-10-06T04:00:00Z MOF catalysis is another area in which computational guidance is accelerating discovery. Experimentalists and theorists need to talk Sometimes two or more foldamers can engage in mutual catalysis, by enhancing reactions that form one another. Life's First Molecule Was Protein, Not RNA, New Model Suggests 2017-11-12T05:00:00Z Chemical engineer Jens Nørskov from Stanford University, US, is another possible for the chemistry prize for his fundamental work on heterogeneous catalysis, which has led to advances in ammonia synthesis and fuel cells. Predictions for the 2017 Chemistry Nobel Prize 2017-09-25T04:00:00Z Strategies for the direct catalytic valorization of methane using heterogeneous catalysis: challenges and opportunities. Mild oxidation of methane to methanol or acetic acid on supported isolated rhodium catalysts 2017-11-28T05:00:00Z But asymmetric catalysis can produce just one of these asymmetric molecules, the left or the right, a boon for safety and for reducing chemical waste. Nobel Prize in Chemistry Awarded to Scientists for Tool That Builds Better Catalysts 2021-10-06T04:00:00Z For example, our group collaborates with computational experts to solve various problems ranging from gas separation to catalysis. Experimentalists and theorists need to talk “Modern enzymes aren’t just smooth balls. Enzymes contain crevices that assist the process of catalysis,” he explained. Life's First Molecule Was Protein, Not RNA, New Model Suggests 2017-11-12T05:00:00Z There is a pressing need to find sustainable fuels that are "drop-in replacements" for current fossil fuels, said Duncan Wass, a professor of catalysis at the University of Bristol in the United Kingdom. New Biofuel Could Work in Regular Diesel Engines 2017-06-20T04:00:00Z Molecular recognition, binding and catalysis are often mediated by non-covalent interactions involving aromatic functional groups. Exploiting non-covalent π interactions for catalyst design : Nature : Nature Research 2017-03-28T04:00:00Z His results showed that some of these organic molecules were excellent at asymmetric catalysis, producing more than 90 percent of the desired mirror image. Nobel Prize in Chemistry Awarded to Scientists for Tool That Builds Better Catalysts 2021-10-06T04:00:00Z And the scope of catalysis is increasing rapidly. The new breed of cutting-edge catalysts 2016-09-05T04:00:00Z Much of the work at the center involves studying catalysis, through theoretical analysis and testing possible combinations of metal oxides to see how well they might work. Researchers Aim to Put Carbon Dioxide Back to Work 2016-05-02T04:00:00Z In addition he worked on the physics of semiconductors, superconductivity, surface physics and catalysis. Walter Kohn, onetime refugee who became Nobel laureate in chemistry, dies at 93 2016-04-24T04:00:00Z ‘We wanted to apply this idea to transition metal catalysis.’ Mixing Two Incompatible Chemicals in One Pot 2015-10-19T04:00:00Z Future investigations need to explore routes from chitin to other chemicals, enhance product yields through improved catalysis and pre-treatments and ease the separation of products. Sustainability: Don't waste seafood waste 2015-08-09T04:00:00Z In 2008, chemists discovered that certain standard catalysts could be made more powerful by combining them with a technique known as photoredox catalysis. The new breed of cutting-edge catalysts 2016-09-05T04:00:00Z Dr. Kuhl and Dr. Cave studied catalysis at Stanford, and though their operation is far smaller than the center’s just up the hill, they are working on developing and fine-tuning catalysts to efficiently convert CO2. Researchers Aim to Put Carbon Dioxide Back to Work 2016-05-02T04:00:00Z “We’re trying to develop a constellation of labs that will benefit that catalysis.” Oregon State University gets new biotech lab 2015-03-12T04:00:00Z But one reason for its abundance is its inefficiency: plants produce so much Rubisco in part to compensate for its slow catalysis. Hacked photosynthesis could boost crop yields 2014-09-16T04:00:00Z The project should be supported by governments of nations rich in shell waste, and executed by researchers with complementary expertise, covering catalysis, materials science and engineering, food science and life-cycle assessment. Sustainability: Don't waste seafood waste 2015-08-09T04:00:00Z The aim of catalysis is to direct reactions along precisely defined pathways so that chemists can skip reaction steps, reduce waste, minimize energy use and do more with less. The new breed of cutting-edge catalysts 2016-09-05T04:00:00Z “You can rest assured that the energy and catalysis problems of humanity will not have been resolved five years from now,” he said. Researchers Aim to Put Carbon Dioxide Back to Work 2016-05-02T04:00:00Z Such synthetic gas, or syngas, is then fed into the first of the cylinders where yet more heat and pressure, combined with the dark art of catalysis, transform it into methanol. Can Methane Leaks from Fracking Be Turned into Valuable Gasoline? 2014-03-05T12:01:00Z This outer-layer structure is crucial for technological processes such as catalysis, lubrication, and electron transport. [Perspective] Capturing Surface Processes 2014-02-13T19:25:32.114Z Catalytic hydrogenations are one of the extraordinary success stories of homogeneous catalysis, and three reports in this issue describe remarkable progress in the use of Earth-abundant metals as catalysts for hydrogenations. [Perspective] Abundant Metals Give Precious Hydrogenation Performance 2013-12-04T22:55:45.071Z At least 15 Nobel prizes have been awarded for work on catalysis. The new breed of cutting-edge catalysts 2016-09-05T04:00:00Z His research explores materials science, catalysis and artificial photosynthesis. Energy: Fuelling the future 2013-10-16T17:21:41.810Z Applying olefin metathesis and taking it to its extremes: high temperature, tandem catalysis, fancy molecules, polymer chemistry. Q&A: A sustainable chemist 2013-10-16T17:21:39.283Z I started my independent research looking at alkene polymerization; in particular, the polymerization of norbornene into poly-norbornene, which is often used as a test substrate for catalysis. Q&A: The bond shifter 2013-10-16T17:21:33.257Z The work sheds light on phenomena as diverse as protein folding, catalysis, electron transfer and drug design. Computational chemistry wins 2013 Nobel Prize in Chemistry 2013-10-10T19:46:23.360Z Naturally occurring enzymes don't always catalyse the reactions that chemists want, however — which is why one frontier of catalysis research is to rework these proteins so that they do. The new breed of cutting-edge catalysts 2016-09-05T04:00:00Z She performed the research that provided the fundamental principles of catalysis and published her work in 1794. 30 under 30: Delving into the Unknown with Enzymes 2013-06-29T16:45:00.717Z I would like to continue working with catalysis in one way or another. 30 under 30: Catalyzing Reactions with Renewable Materials 2013-06-18T18:15:02.087Z The principle at the heart of the successful American and German schemes is market catalysis rather than replacement. Economic recovery: why do we still get it so wrong on small businesses? 2013-04-27T23:03:05Z “It reflects the way that organocatalysis fundamentally changes the way we do catalysis,” he says. Amino acid provides shortcut to drugs 2012-08-15T17:21:07.337Z Chemists are continuing to push the boundaries of catalysis research. The new breed of cutting-edge catalysts 2016-09-05T04:00:00Z "I think you can rely upon your powers of catalysis, Dorothy," he said. The Vanity Girl 2012-04-12T02:00:26.883Z Magnus Johnson 29 Malmö, Sweden Swedish Postdoctoral researcher at Lund University/Gothenburg University BSc and PhD, both in inorganic chemistry, from Lund University I am working in the field of chemical catalysis. 30 under 30: Catalyzing Reactions with Renewable Materials 2013-06-18T18:15:02.087Z There is another chemical principle, called catalysis, through which human actions may make powerful and permanent impressions on the universe, and that, too, unperceived by man. The Religion of Geology and Its Connected Sciences 2011-02-28T03:00:28.890Z The action of pepsin, of the pancreatic ferment, of zymase, and of other similar ferments has a great analogy with the purely physical phenomenon of catalysis. The Mechanism of Life “These are feedstocks that are ripe for advances in catalysis,” says Melanie Sanford, a chemist at the University of Michigan in Ann Arbor. The new breed of cutting-edge catalysts 2016-09-05T04:00:00Z The phenomenon known as "catalysis" is of common occurrence in both inorganic and organic chemistry. The Chemistry of Plant Life The theory of catalysis is treated under Chemical Action; in this article mention will be made of some of the more interesting examples. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 5 "Cat" to "Celt" One of the earliest known and technically most important instances of catalysis is that of the oxidation of sulphur dioxide to sulphuric acid by oxygen in the presence of oxides of nitrogen. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1 "Châtelet" to "Chicago" Many other chemical and physical agents have a similar inhibitory action on the catalysis of colloidal metals and on diastasic fermentation. The Mechanism of Life As a bonus, the photoredox catalysis drives the process with energy that it absorbed from light, reducing the heat required to keep the reaction going. The new breed of cutting-edge catalysts 2016-09-05T04:00:00Z This latter consideration affords a satisfactory explanation of the well-known depressing, or stimulating, action of electrolytes, especially acids and bases, upon the enzymic catalysis of protoplasmic reactions. The Chemistry of Plant Life In chemical catalysis what does the second body “detach from itself” to produce change in the first, which is changed by its mere presence. Buchanan's Journal of Man, September 1887 Volume 1, Number 8 Other well-known and remarkable examples are the catalysis of the combustion of hydrogen and of sulphur dioxide in oxygen by finely-divided platinum. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1 "Châtelet" to "Chicago" We may hope that the further study of catalysis, a purely physico-chemical phenomenon, may throw more light on the mechanism of diastasic fermentation, which is essentially a vital reaction. The Mechanism of Life In the past, chemists had a tough time designing heterogeneous catalysts with atomic precision because it was difficult to make and study the active sites, where catalysis occurs, in a solid material. The new breed of cutting-edge catalysts 2016-09-05T04:00:00Z They've found the secret of catalysis, and can actually synthesize any catalytic agent they want. Islands of Space Substances which hasten very slow reactions in this way are said to act as catalytic agents or catalyzers, and the action is called catalysis. An Elementary Study of Chemistry Then there is such a thing as negative catalysis. The Black Star Passes The phenomena of catalysis and of diastatic fermentation have for the first time been brought under the general laws of energetics. The Mechanism of Life The chemical theory maintains that after the infectious element has been received into the body it acts as a ferment, and gives rise to certain morbid processes, upon the principle of catalysis. Scientific American Supplement, No. 787, January 31, 1891 Or was it her brother's presence, that, serving somehow to take off the edge, worked a mysterious catalysis? Mary Wollaston The principle of catalysis is therefore very important. An Elementary Study of Chemistry I don't believe we'll be able to build up enough mass to insulate against their negative catalysis ray. The Black Star Passes Then little by little catalysis of the hydrogen peroxide begins, with liberation of oxygen. The Mechanism of Life With thyroid is introduced the trick of catalysis, or the speeding up of the vital chemical reactions, through the agency of an intermediate which accelerates the process. The Glands Regulating Personality We call this catalysis, catalytic action, the action of presence, or by what learned name we choose. Medical Essays, 1842-1882 Thus the heart-beat may be but an instance of rhythmic catalysis, since both produce the same phenomena, movement, chemical action, and periodic currents. The Mechanism of Life But the whole solvent agency of the digestive fluid enters into the category of that exceptional mode of action already familiar to us in chemistry as catalysis. Medical Essays, 1842-1882 Like circulation or respiration, periodic catalysis has its poisons, and exhibits signs of fatigue, and of paralysis by cold. The Mechanism of Life |
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