| 单词 | chemical |
| 释义 | chemical (kemɪkəl ) Word forms: chemicals 1. adjective [ADJECTIVE noun] B2 Chemical means involving or resulting from a reaction between two or more substances, or relating to the substances that something consists of. ...chemical reactions that cause ozone destruction. ...the chemical composition of the ocean. ...chemical weapons. chemically (kemɪkli ) adverb [ADVERB with verb, ADVERB adjective] ...chemically-treated foods. The medicine chemically affects your physiology. 2. countable noun [usually plural] B2 Chemicals are substances that are used in a chemical process or made by a chemical process. The whole food chain is affected by the over-use of chemicals in agriculture. ...a chemicals company. ...the chemical industry. Synonyms: compound, drug, substance, synthetic substance Collocations: chemical change New research had found that both can be caused by the same chemical change. Times, Sunday Times It's a real chemical change. Times, Sunday Times This chemical change enables the further breakdown of the material by naturally-occurring micro-organisms. Retrieved from Wikipedia CC BY-SA 3.0 Chemical reactions are usually characterized by a chemical change, and they yield one or more products, which usually have properties different from the reactants. Retrieved from Wikipedia CC BY-SA 3.0 Draper developed the proposition in 1842 that only light rays that are absorbed can produce chemical change. Retrieved from Wikipedia CC BY-SA 3.0 A chemical company with $30 million of sales may be a fairly big business. MANAGEMENT: task, responsibilities, practices (1974) The largest part of its cargo was a desalination plant donated by an American chemical company in Ohio. RUSHING TO PARADISE Most of the sales volume of the typical chemical company is "value added. MANAGEMENT: task, responsibilities, practices (1974) Also, emotional tears are made up of a different chemical component than those evoked by eye irritants and can relay chemical messages to others. Retrieved from Wikipedia CC BY-SA 3.0 The special chemical component(s) within the column bind to substances contained in the moving vaporized sample mixture with slightly different force. Retrieved from Wikipedia CC BY-SA 3.0 The relaxing effect of hops may be due, in part, to the specific chemical component dimethylvinyl carbinol. Retrieved from Wikipedia CC BY-SA 3.0 Filters are then used to identify chemical components which stand out from the background. The Sun It includes a chemical component library, thermodynamic property prediction methods, and unit operations such as distillation columns, heat exchangers, compressors, and reactors as found in the chemical processing industries. Retrieved from Wikipedia CC BY-SA 3.0 The two forms have the same chemical composition. Times, Sunday Times (2012) The rover's instruments will determine the chemical composition of the powder. Times, Sunday Times (2013) The team used isotopic analysis to examine the chemical composition of the glycine. Times, Sunday Times (2009) The chemical composition of the pyroxenes differs among individual enclaves, with variable proportions of diopside, kosmochlor and jadeite-aegirine end-members. 2018, 'On the Chemical Composition and Possible Origin of Na–Cr-Rich Clinopyroxene in Silicocarbonatites from Samalpatti, Tamil Nadu, South India', Minerals Their chemical composition, powder properties, photocatalytic activity, color phase, and smoothness were studied. 2015, 'Influence of concentration in phosphoric acid treatment of titanium oxide and their powder properties', Journal of Asian Ceramic Societies It is a monoamine oxidase inhibitor, which means it causes your body to receive a chemical compound it would normally screen out. Times, Sunday Times (2007) Most pharmaceuticals are formed from a purified chemical compound. Times, Sunday Times (2009) The new chemical compound was successful in tests on mice. The Sun (2016) It found that one of the most significant was lignin, a chemical compound similar to that which gives the distinctive smell of vanilla. Times, Sunday Times (2016) Eating too little of the chemical element can cause excessive tiredness, thyroid problems and brain damage - but too much can lead to similar problems. The Sun The laboratory was honored in 2012 by having the synthetic chemical element livermorium named after it. Retrieved from Wikipedia CC BY-SA 3.0 Most chemical element that enter into the dietary physiology of organisms are in the form of simple compounds. Retrieved from Wikipedia CC BY-SA 3.0 Server names may be named by their role or follow a common theme such as colors, countries, cities, planets, chemical element, scientists, etc. Retrieved from Wikipedia CC BY-SA 3.0 Before spectra of oxygen ions became known, these lines once led to a spurious identification of the substance as a new chemical element. Retrieved from Wikipedia CC BY-SA 3.0 The most efficient crop plants, such as sugar cane or maize, convert about 1% of the sunlight that falls onto them into chemical energy. Times, Sunday Times The clock employs the chemical energy potential available from most fruits and vegetables and converts it to electricity. Times, Sunday Times The liquids are pumped into a battery cell that converts the chemical energy to electrical energy. Smithsonian Mag Silicon solar cells can convert sunlight into electrical energy with 15% efficiency, and electrical energy can be converted into chemical energy without much loss. Times, Sunday Times The light energy from the laser increases the action of adonosine triphosphate, a molecule that converts light into chemical energy between living cells, thus speeding up hair growth. Times, Sunday Times The injured showed all the signs of chemical exposure - red eyes, fluids leaking from their noses, red lips. Times, Sunday Times Understanding such uses in the broader context of human history and evolution may inform our decisions about the risks of chemical exposure going forward. Smithsonian Insider Chemical exposure has been linked to stress and other side effects in wildlife. Times, Sunday Times Triggers may range from a viral infection or illness to environmental chemical exposure. Retrieved from Wikipedia CC BY-SA 3.0 Oxidative stress can result from infection and from chemical exposure to medication and certain foods. Retrieved from Wikipedia CC BY-SA 3.0 I had been working in the yard of a chemical factory. The Sun His son had worked as a quality-control offi cer in a chemical factory. Times, Sunday Times I know what's in it — you might as well go into a chemical factory and drink something. Times, Sunday Times The explosion had its centre in a chemical factory. Times, Sunday Times In 1846 the railway came and a silk factory was built, followed by a chemical factory in 1849. Retrieved from Wikipedia CC BY-SA 3.0 But rather than going out of business, the suppliers just altered the chemical formula a bit, changed its name and went on — legally — supplying something similar. Times, Sunday Times But canny drugmakers simply alter the chemical formula of their products and push them back out to market. The Sun Its forms an impure solid solution that deviates markedly in composition from the simple chemical formula. Retrieved from Wikipedia CC BY-SA 3.0 Many chemical compounds exist in different isomeric forms, which have different structures but the same overall chemical formula. Retrieved from Wikipedia CC BY-SA 3.0 Potassium rhenide was shown to exist as a tetrahydrated complex, with the postulated chemical formula. Retrieved from Wikipedia CC BY-SA 3.0 Thousands of mines on the island are still full of chemical gas and can be set off by passersby. Retrieved from Wikipedia CC BY-SA 3.0 Vinyl products are pervasiveincluding toys, car interiors, shower curtains, and flooringand initially release chemical gases into the air. Retrieved from Wikipedia CC BY-SA 3.0 This was a secretive unit where all sorts of chemical gases and munitions were tested. Retrieved from Wikipedia CC BY-SA 3.0 His disease has apparently resulted from chemical gases used in the war. Retrieved from Wikipedia CC BY-SA 3.0 The plot was said to involve the use of a relatively crude device for releasing the chemical gases. Retrieved from Wikipedia CC BY-SA 3.0 You might be feeling unhappy, then your body rectifies that chemical imbalance and suddenly you're living again. Times, Sunday Times (2013) They had a chemical imbalance in their brain. Times, Sunday Times (2015) Or it may be more to do with a chemical imbalance in the brain. The Sun (2013) My mother, a victim both of a chemical imbalance and imbalanced fate, had been a resident of a psychiatric hospital for several years. NO BODY He thought this was a cheap shot by the chemical industry to divert attention away from pesticides. Times, Sunday Times (2016) It means something very different in hotels from what it means in the chemical industry. MANAGING IN TURBULENT TIMES (1980) It plans to sell any extra capacity to the Teesside chemical industry. Times, Sunday Times (2006) The record of the chemical industry does not inspire confidence. The Residue Report - an action plan for safer food (1988) The next big step came via the infant chemical industry. Consuming Passions: Leisure and Pleasure in Victorian Britain (2006) They look at the available data about the chemical ingredients to determine whether the end product will be safe when it reaches the market. Times, Sunday Times Already, studies are illuminating the cells involved, and defining the chemical ingredients needed. Retrieved from Wikipedia CC BY-SA 3.0 It carried out 688 experiments, after weighing up some 98 million possible combinations of chemical ingredients. Times,Sunday Times The new imaging technique can pick up the characteristic light signature of pharmaceuticals' active chemical ingredients through glass, plastic and cardboard. Times, Sunday Times The flavorist will use his or her knowledge of the available chemical ingredients to create a formula and compound it on an electronic balance. Retrieved from Wikipedia CC BY-SA 3.0 Analysis of the light emitted by stars provided information about their temperature, density and chemical makeup. Times, Sunday Times Due to their limestone construction, the monuments affected the chemical makeup of the soil as they deteriorated. Retrieved from Wikipedia CC BY-SA 3.0 Often specimens show their characteristic autofluorescence image, based on their chemical makeup. Retrieved from Wikipedia CC BY-SA 3.0 The unusual chemical makeup of this igneous rock may be a factor in the unusual fluidity of its lavas. Retrieved from Wikipedia CC BY-SA 3.0 Although many other phases exist with similar or even identical chemical makeup, the body responds to them very differently. Retrieved from Wikipedia CC BY-SA 3.0 One chemical manufacturer also discharges into the river. Retrieved from Wikipedia CC BY-SA 3.0 When he left school, at 15, he wanted to pursue a career in chemistry and was apprenticed to a local chemical manufacturer. Retrieved from Wikipedia CC BY-SA 3.0 Chemical tanks should be designed in conjunction with the chemical manufacturer, providing some historic experience regarding tank materials compatibility to the chemical. Retrieved from Wikipedia CC BY-SA 3.0 It has housed petroleum storage sites, plastics makers and, since 1942, the country's largest chemical manufacturers, leaving underlying soils and groundwater heavily contaminated. Times, Sunday Times New targets for industrial sectors are also required, particularly for chemical manufacturers and agriculture, and water companies must also be encouraged to share their water supplies. Times, Sunday Times There must, he deduced, be a chemical messenger that passes down through the plant carrying the tip's instructions. Times, Sunday Times These are all due to the disease causing the loss of certain brain cells that produce a chemical messenger called dopamine. The Sun In the late 1970s, scientists first suspected that a gaseous molecule could also act as a chemical messenger within mammalian cells. The Scientist It was found that ultraviolet rays in sunlight help the skin to release a chemical messenger called nitric oxide. Times, Sunday Times They open outwards at the crural papillaesmall wart-like bumps on the belly side of the legand secrete chemical messenger materials called pheromones. Retrieved from Wikipedia CC BY-SA 3.0 She spent 4,500 on a mini facelift and had the bags under her eyes removed, a chemical peel and liposuction under her chin. The Sun Can't stand the thought of another chemical peel? canada.com Actually, there's one thing you could do for your skin now that will make all the difference: a chemical peel. Times, Sunday Times Failing that, a chemical peel for your face and photodynamic therapy elsewhere on your body may be worth looking into. The Sun Philosophy's anti-ageing retinoid pads are a home version of a chemical peel. The Sun For example, snails may be dealt with through the use of a chemical pesticide, an organic pesticide, hand-picking, barriers, or simply growing snail-resistant plants. Retrieved from Wikipedia CC BY-SA 3.0 In 2009, humans spent in the region of $45 billion on chemical pesticides worldwide. The Times Literary Supplement Deforestation and the spread of chemical pesticides have brought about the same 'colony collapse disorder' afflicting bee populations around the world. Times, Sunday Times If you use high doses of chemical pesticides, then you end up selecting for the pests that can survive despite the pesticide. Retrieved from Wikipedia CC BY-SA 3.0 These included many of the over-the-counter chemical pesticides, wet combing, electric combs, neem oil and lavender oil. The Sun All residents were evacuated from the half-mile blast area over fears of chemical pollution in the air. The Sun However, mudflats worldwide are under threat from predicted sea level rises, land claims for development, dredging due to shipping purposes, and chemical pollution. Retrieved from Wikipedia CC BY-SA 3.0 The effects of the oil and chemical pollution on these species remains unknown. Retrieved from Wikipedia CC BY-SA 3.0 Other true loaches, many of them migratory fish, have been seriously affected by habitat destruction, chemical pollution, and damming, and are considered threatened species today. Retrieved from Wikipedia CC BY-SA 3.0 Gristmills and tanneries on the rivers of the estuary contributed significantly to the chemical pollution until the mid 20th century. Retrieved from Wikipedia CC BY-SA 3.0 By chance, the chains of complex molecules start to self-replicate, most likely through a simple chemical process called the citric acid cycle. Times, Sunday Times (2012) There is also a certain ambiguity in the reactions (there is at any time more than one chemical process going on up there). The Crisis of Life on Earth - our legacy from the second millenium (1990) Thus, this paper presented preparation of activated alumina from chemical process. 2018, 'Preparation and Characterization of Activated Alumina', E3S Web of Conferences This can be done through chemical processing such as 'hydrogenation' or 'interesterification'. Times, Sunday Times (2013) The active ingredients of a formulated chemical product that differentiate it from another similar material may include proprietary ingredients or specific functional additives. Retrieved from Wikipedia CC BY-SA 3.0 Coffee and organic broccoli have more carcinogens in them than most chemical products. Times, Sunday Times One source describes 8 phases in the development of a chemical product starting with research, economic study, scale-up (pilot plant) and design leading to full funds authorization. Retrieved from Wikipedia CC BY-SA 3.0 The monthly rise in eurozone industrial output was driven by 0.6 per cent growth in production of intermediate goods, such as chemical products and pesticides. Times, Sunday Times These are less popular as people like to use the natural ones and the lice have grown resistant to the chemical products that have been on the market for years. The Sun Yet because of the chemical properties of water, the ice formed a crust that served as insulation for warmer, liquid water below. Times, Sunday Times The periodic table, the crowning achievement of chemistry, places all the known elements in order, grouped according to their chemical properties and behaviour. Times, Sunday Times As the connective tissue between neurons gets stretched, the chemical properties of the brain change in a way that allows calcium to flood into brain cells, often causing irreparable damage. Times, Sunday Times Zircon crystals may not be much to look at, but they have a set of unique chemical properties that allow geologists to reconstruct the long-vanished landscapes in which they formed. The Times Literary Supplement We need computational tools to describe physical and chemical properties of proteins to determine how they function. The Scientist So full of chemical residue are some farmed salmon, a 2004 study concluded that people should not eat them more than three times a year. Times, Sunday Times Certainly the rapid growth in consumer demand for organic food suggests that many consumers are increasingly wary about ingesting chemical residue on conventionally farmed food. Times, Sunday Times He added that it would expose people to twice as many chemical residues from pesticides. Times, Sunday Times An outbreak of the disease may be controlled chemically with oxytetracycline hydrochloride, but honey from treated colonies could have chemical residues from the treatment. Retrieved from Wikipedia CC BY-SA 3.0 Also, studies of chemical residues have huge implications on food toxicity. Retrieved from Wikipedia CC BY-SA 3.0 Most medications that affect mood and behavior change the strength of the chemical signal passing through the synapses. Christianity Today Both types of synapses rely on neurotransmitters to transduce the electrical signal into a chemical signal and back. Retrieved from Wikipedia CC BY-SA 3.0 This leads to the opening of the channel converting the chemical signal to an electrical impulse. Retrieved from Wikipedia CC BY-SA 3.0 When a conditioned seed receives a chemical signal from a host plant, it germinates, forming a germ tube which grows toward the host. Retrieved from Wikipedia CC BY-SA 3.0 Growth cycles are controlled by a chemical signal like epidermal growth factor. Retrieved from Wikipedia CC BY-SA 3.0 The chemical solution starts a rapid cooling reaction that suppresses oxygen and extinguishes the flames around it. Times, Sunday Times I have tried almost every chemical solution on the market, plus several nonchemical ones, and an awful lot of shouting. Times, Sunday Times They contain a vaporiser and a replaceable cartridge that stores nicotine in a chemical solution of either propylene glycol or glycerine and water. The Sun For the first time in my 40 years in farming, we have to come up with a cultural rather than chemical solution. Times, Sunday Times Alternatively, create a waterproof barrier by impregnating the walls with a chemical solution. Times, Sunday Times At first, researchers suspected chemical spill or some pollutant was responsible. Retrieved from Wikipedia CC BY-SA 3.0 It was initially believed there may have been a chemical spill at the scene but that was ruled out. The Sun Rumors began to surface that the government was trying to conceal a chemical spill. Retrieved from Wikipedia CC BY-SA 3.0 The incident did not have available data on the chemical spill including data on repeated dose toxicity, carcinogenicity, reproductive toxicity, specific target organ toxicity, and repeated exposure. Retrieved from Wikipedia CC BY-SA 3.0 Of course, failure of the well casing or surface chemical spills can happen occasionally, as in any industry. Times, Sunday Times The scientists tracked the plume using a mass spectrometer that could instantly detect certain petroleum hydrocarbons, but the complete chemical structure is still being investigated. Times, Sunday Times (2010) And we can now see the difference in the chemical structure of the brain. Times, Sunday Times (2011) It all comes down to the chemical structure of its molecules, and how they interact with light. Times, Sunday Times (2012) Four novel bisquaternary aldoxime cholinesterase reactivators differing in their chemical structure were prepared. 2009, 'Novel Bisquaternary Oximes—Reactivation of Acetylcholinesterase and Butyrylcholinesterase Inhibited by Paraoxon', Molecules The chemical structure analysis showed that this novel quinoid compound was 2-amino-6-hydroxy-[1,4]- benzoquinone. 2017, 'A Novel Benzoquinone Compound Isolated from Deep-Sea Hydrothermal Vent Triggers Apoptosis of Tumor Cells', Marine Drugs When we dream, we produce a chemical substance in our spinal cord that inhibits movement to stop us thrashing around. The Sun Earlier yesterday a soldier was lightly injured when a chemical substance was sprayed at him near the building, the army said. Times, Sunday Times They may be permeable only to mechanical work, or only to heat, or only to some particular chemical substance. Retrieved from Wikipedia CC BY-SA 3.0 Brackets can also be used in chemistry to represent the concentration of a chemical substance or to denote distributed charge in a complex ion. Retrieved from Wikipedia CC BY-SA 3.0 Chemical reactions convert one chemical substance into another. Retrieved from Wikipedia CC BY-SA 3.0 Other traces are much harder to find, and that group includes chemical traces of fossils, degraded biological compounds, and fossils of microorganisms themselves. Retrieved from Wikipedia CC BY-SA 3.0 The epic journey lasts three or four life cycles, with the route marked by chemical traces left by earlier generations of the butterfly, scientists believe. Times, Sunday Times Chemical traces have revealed that the early hominid changed its feeding habits from month to month, indicating a nomadic lifestyle. Times, Sunday Times The agency took the line that it was perfectly safe to use milk with antibiotics for food production as long as the chemical traces were below maximum safety limits. Times, Sunday Times Chemical traces produced by climatic changes, such as quantities of particular isotopes, can be recovered from proxies. Retrieved from Wikipedia CC BY-SA 3.0 Chapters include 'underpinning for subsidence' and 'chemical treatment of beetle infestation' - a joy. Times, Sunday Times The heavy summer rains have made paving slippery but chemical treatment or pressure-hosing will soon clean it up. The Sun The mattress was encased in a bedbug protector (which seals in and smothers anything alive) in preparation for the first chemical treatment (there were three, with two weeks between visits). Times, Sunday Times Fresh rainwater needs no chemical treatment. Times, Sunday Times After a chemical treatment, the coatings behave like graphite in terms of chemical and thermal stability, but become nearly as tough as graphene, the strongest material known to exist. Times, Sunday Times We put around 500 million litres of chemical waste down our drains every year. Times, Sunday Times Today they face increasing threats of pollution from agricultural runoff, not to mention the legacy of chemical waste plants. Smithsonian Mag In the same period chemical waste fell by a massive 8% and foam waste was cut by 26%. Times, Sunday Times Aquarium filters remove physical and soluble chemical waste products from aquaria, simplifying maintenance. Retrieved from Wikipedia CC BY-SA 3.0 These wastes include, among others, chemical waste, radioactive waste, municipal solid waste, asbestos, incinerator ash, and old tires. Retrieved from Wikipedia CC BY-SA 3.0 Scientists have discovered that tomatoes contain a chemical that has the ability to thin blood and prevent it forming clots. Times, Sunday Times The cards contain a chemical that replicates the smell of the plants when they are growing. Times, Sunday Times Orders for its test tubes, which contain a chemical that allows researchers to collect virus samples without risking infection, have boomed. Times,Sunday Times Also contain a chemical we need to make the feelgood brain chemical dopamine. The Sun During the chemical processing, hermetic containers trap and contain the chemicals which are recycled not released into the factory, environment or atmosphere. Retrieved from Wikipedia CC BY-SA 3.0 Worryingly, people can become allergic to the dangerous chemical at any time, even if they have been exposed to it before without problems. The Sun Supertankers squeeze dangerous chemical cargoes through a city of more than 15 million people every week. Times, Sunday Times These guides have been developed to ensure worker safety when handling dangerous chemical toxins. Retrieved from Wikipedia CC BY-SA 3.0 This eliminated the need to use osmium tetroxide, a rare, expensive, and dangerous chemical. Retrieved from Wikipedia CC BY-SA 3.0 Some units have video systems and remote control in case of dangerous chemical fires. Retrieved from Wikipedia CC BY-SA 3.0 In the year 2000, taste receptors were discovered on the tongue that detect this chemical. Times, Sunday Times The shoalmates can detect the chemical and respond to the increased risk of predation. Retrieved from Wikipedia CC BY-SA 3.0 They were able to detect the chemical in specimens that were 115 years old. Retrieved from Wikipedia CC BY-SA 3.0 A deep love of environmental chemical engineering came lower on the list. Times, Sunday Times Triggers may range from a viral infection or illness to environmental chemical exposure. Retrieved from Wikipedia CC BY-SA 3.0 Environmental chemical engineers, on the other hand, focus on environmental chemistry, advanced air and water treatment technologies and separation processes. Retrieved from Wikipedia CC BY-SA 3.0 Environmental chemicals, from the plastics used in food production to flame retardants, could be changing our hormones. Times, Sunday Times An experiment has shown that there could be a shared cause: environmental chemicals in the home. Times, Sunday Times Officials face calls to control farm chemicals after a string of food safety scandals. The Sun The report singled out watercress farms, which use phosphate fertilisers, plus fish farms, as river polluters besides the normal farm chemicals. Times, Sunday Times There are also confused reports that the average production rate has declined due to the reduced application of necessary farm chemicals. Retrieved from Wikipedia CC BY-SA 3.0 This nutrient helps prevent high levels of harmful chemical homocysteine, linked to heart disease. The Sun Major chemical spills involve either high quantities of a substance, or any spilled quantity of a harmful chemical substance. Retrieved from Wikipedia CC BY-SA 3.0 It has gingerol, an antioxidant that fights off harmful chemicals that lead to stress. The Sun They also absorb harmful chemicals from the air and the soil. The Sun Being happy makes you healthy too, boosting the immune system and cutting down the production of harmful chemicals. The Sun As it lasts for 80 washes, you spare the world heaps of harsh chemical detergents and save yourself some pennies. Times, Sunday Times Additionally, it can withstand harsh chemical cleaning treatments. Retrieved from Wikipedia CC BY-SA 3.0 The stresses of routine use and harsh chemical solutions eventually cause rotors to deteriorate. Retrieved from Wikipedia CC BY-SA 3.0 Corrosion of the insulators was found to be a problem in the harsh chemical environment as they gradually became conductive and the self-discharge rate increased. Retrieved from Wikipedia CC BY-SA 3.0 Examples include paddle-boarding and cycling over speedboating and driving, and using marine-friendly sunscreen devoid of harsh chemicals to help protect the reef and its residents. The Sun Injury due to hazardous chemical exposure, radiation, and other hazards permanently disable 100,000 federal workers each year. Retrieved from Wikipedia CC BY-SA 3.0 Following this event, safety regulations for the transport of chemical substances were improved and ammonium nitrate was classified as a hazardous chemical compound. Retrieved from Wikipedia CC BY-SA 3.0 In addition to seeing the results, employees and their representatives also have the right to observe the actual measurement of hazardous chemical or noise exposure. Retrieved from Wikipedia CC BY-SA 3.0 With 50 rooms, including a nationally recognized polymer lab, a darkroom, a 100-seat lecture hall, and a main supply room with an acid room and hazardous chemical vault. Retrieved from Wikipedia CC BY-SA 3.0 There were signs in the windows warning of hazardous chemicals. Times, Sunday Times Peace lilies remove common household chemicals, including benzene, formaldehyde, trichloroethylene, ammonia, toluene and xylene. Times, Sunday Times They may be more exposed to household chemicals. Times, Sunday Times Toxic household chemicals have been used when forage fishing. Retrieved from Wikipedia CC BY-SA 3.0 Today's common irritants include cosmetics, perfumes, antibacterial soaps, cleansers, and household chemicals. Retrieved from Wikipedia CC BY-SA 3.0 Bleaches are used as household chemicals to whiten clothes and remove stains and as disinfectants, primarily in the bathroom and kitchen. Retrieved from Wikipedia CC BY-SA 3.0 The powder contained industrial chemical melamine, which can give misleading results in quality control tests. The Sun He suggested that a 'toxic industrial chemical' could be to blame. Times, Sunday Times More than 300,000 infants became ill after drinking milk contaminated with melamine, an industrial chemical used to make plastics and fertiliser. Times, Sunday Times It contained dangerous industrial chemical heptane but a labelling error meant it was not printed on the can. The Sun Later, due to heavy industrial chemical pollution, the river course had been totally cut off and got filled up. Retrieved from Wikipedia CC BY-SA 3.0 Only radioactive materials and a few man-made chemical contaminants would last longer - an invisible legacy. Times, Sunday Times Chances are, you're on friendlier terms with these man-made chemicals than you realise. The Sun However, the word has come to mean man-made chemicals, usually with real or suspected harmful effects. Times, Sunday Times It can be caused by man-made chemicals from plastics, pesticides, etc. The Sun In 1986 the team discovered that man-made chemicals were to blame. Times, Sunday Times Equipment allegedly used to mix the chemicals included coffee filters, a device to test for acidity, scales and a thermometer. Times, Sunday Times The shell was designed to mix the chemicals as it spins during flight. Retrieved from Wikipedia CC BY-SA 3.0 The plant pre-wets the coaches, before mixing the chemicals in water. Retrieved from Wikipedia CC BY-SA 3.0 At maximum concentration (typically only found in laboratory settings), mixing the chemicals results in a furious reaction, producing large amounts of light for only a few seconds. Retrieved from Wikipedia CC BY-SA 3.0 Researchers have isolated the natural chemical acetylcholine which sends signals round the nervous system. The Sun The academics estimate that the natural chemical cycle has collapsed to six per cent of its former size. Times, Sunday Times When the anticipated natural chemical release doesn't arrive, the smoker experiences stress and craves the endorphin release they now associate with smoking another cigarette. The Sun The distillation of products from wood characterized the transition from the use of natural chemical products (chemical industry) to that of fully synthetic products. Retrieved from Wikipedia CC BY-SA 3.0 The periphyton and natural chemical processes are responsible for approximately 90 percent of pollutant removal and waste breakdown. Retrieved from Wikipedia CC BY-SA 3.0 He became head of the group's technical department and then development director of the heavy organic chemical division. Times, Sunday Times Within each cell of our body, many thousands of proteins (organic chemical compounds) participate in a complex interplay. Times, Sunday Times An organic chemical that could be an indicator of extraterrestrial life has been identified on a distant planet. Times, Sunday Times About 20 million kg are now synthetically produced annually as a basic organic chemical, mainly as a precursor to pesticides, flavors, and fragrances. Retrieved from Wikipedia CC BY-SA 3.0 The essential oils in the fruits and leaves are valued for their organic chemical constituents: car-3-ene (in fruit) and linalool (from leaves). Retrieved from Wikipedia CC BY-SA 3.0 This practice prompts the body to produce the chemical phenylethylamine, which makes you feel in love. The Sun (2016) The chemical is produced in the blood after heart failure but is also found in people suffering brain damage. The Sun (2016) Intravenous prazosin was used to produce chemical sympathectomy. 2015, 'Neural Mechanisms and Delayed Gastric Emptying of Liquid Induced Through Acute Myocardial Infarction in Rats', Arquivos Brasileiros de Cardiologia The sun's rays release a chemical - identified as nitric oxide - in blood vessels which helps lower blood pressure. The Sun They can be overstimulated by stress to release a chemical called interleukin-6, which can cause chronic inflammation in cardiac tissues. Times, Sunday Times It was found that ultraviolet rays in sunlight help the skin to release a chemical messenger called nitric oxide. Times, Sunday Times The hair cells are mechanoreceptors that release a chemical neurotransmitter when stimulated. Retrieved from Wikipedia CC BY-SA 3.0 She can release a chemical from her fingernails that immobilizes people. Retrieved from Wikipedia CC BY-SA 3.0 Some suppliers spray a chemical sprout-inhibitor on them. The Sun This involves spraying a chemical and seeing if they can taste it. Times,Sunday Times He says he's going to spray some chemicals. Times, Sunday Times In 1994 the team started spraying a chemical wax to penetrate the wood and replace the water. Times, Sunday Times Many plants store chemicals in the form of inactive glycosides. Retrieved from Wikipedia CC BY-SA 3.0 Ton containers are also used to store chemicals in water treatment plants. Retrieved from Wikipedia CC BY-SA 3.0 Most plants store chemicals in the vacuole that react with chemicals in the cytosol. Retrieved from Wikipedia CC BY-SA 3.0 But our investigators were able to buy a large batch of the unlicensed synthetic chemical within minutes. The Sun Artists and colourmen combine natural and, these days, synthetic pigments with media such as oils and resins, much as the perfumer carefully formulates natural and synthetic chemical compounds. The Times Literary Supplement The laboratory was honored in 2012 by having the synthetic chemical element livermorium named after it. Retrieved from Wikipedia CC BY-SA 3.0 Most leavening agents are synthetic chemical compounds, but carbon dioxide can also be produced by biological agents. Retrieved from Wikipedia CC BY-SA 3.0 Organic certification prohibits most synthetic chemical inputs during food production, or genetically modified organisms, irradiation, and the use of sewage sludge. Retrieved from Wikipedia CC BY-SA 3.0 If there's still no joy, the garage should do a chemical test. Times, Sunday Times The chemical test, or chemical spot test method, utilizes application of sensitive chemicals that can indicate the presence of individual alloying elements. Retrieved from Wikipedia CC BY-SA 3.0 Chemical tests proved segments previously thought volcanic were from space. The Sun The university said it had now warned students not to do chemical tests in their rooms. The Sun Researchers tested the chemical curcumin - found in curry spice turmeric - on oesophagus tumours in a lab. The Sun The 2in globes, used in aircraft construction, had been put in vats of the toxic chemical to keep the metal clean. The Sun Even so, this toxic chemical can still be used in nursery production to ensure that starter plants are virus- and pathogen-free. Retrieved from Wikipedia CC BY-SA 3.0 Traces of a toxic chemical have been found in contaminated counterfeit toothpaste. Times, Sunday Times They recovered toxic chemical and biological substances and a large stock of fertiliser. Times, Sunday Times Technically, the term can also refer to a toxin or toxic chemical that causes illness. Retrieved from Wikipedia CC BY-SA 3.0 Detectives have been unable to identify the volatile chemical that was used in the incident. Times, Sunday Times The wheat has been developed with genes from the mint plant to produce 'a volatile chemical' which makes it unattractive to aphids. The Sun The end that entered the mouth was examined for both bacteriological and chemical abnormalities, while the trunk was scrutinised for 'potentially volatile chemical agents'. Times, Sunday Times Once mature, they produce a volatile chemical attractant. Retrieved from Wikipedia CC BY-SA 3.0 Dextrose or sodium thiosulfate are often added to iodized table salt to stabilize potassium iodide thus reducing loss of the volatile chemical. Retrieved from Wikipedia CC BY-SA 3.0 Translations: Chinese: 化学品 Japanese: 化学薬品 |
| 随便看 |
|
英语词典包含147115条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。