How To Use Chemical change In A Sentence
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Optical radiation may cause chemical changes in living or non-living materials: this property is called actinism and radiation capable of causing such changes is referred to as actinic radiation.
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A chemical change takes place in any substance when it burns.
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Objective To observe the histochemical changes of the enzyme activities of adrenal cortex after hemisection of spinal cord in rats.
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All hair contains a mixture in varying concentration of both black-brown eumelanin and red-yellow phaeomelanin pigments, which are susceptible to differential chemical change under certain extreme burial conditions (for example wet reducing conditions, or dry oxidising conditions).
Interactive Dig Hierakonpolis - Archaeological Hair
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The usual reason given for the use of a chronometric system is that we don't have enough biological activity or geochemical change to find useful markers.
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The radiation causes chemical changes in the brain that resemble symptoms of Alzheimer's.
The Sun
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A chemical change takes place in any substance when it burns.
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When two or more elements combine and form a compound, a chemical change takes place.
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The purpose of all this is to bring about chemical changes, of which the most important is the secretion by the growing embryo of an enzyme, amylase, which converts starch in the grain to maltose, a sugar.
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A vast number of interlocking hormonal and biochemical changes result from smoking.
The Beat Fatigue Workbook - how to identify the causes
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Coal forms by a slow process of chemical change.
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thermoplastic materials can be remelted and cooled time after time without undergoing any appreciable chemical change
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In addition to fish, other aquatic creatures such as clams and daphnia are used as indicators of chemical changes.
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The radiation causes chemical changes in the brain that resemble symptoms of Alzheimer's.
The Sun
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Objective To observe the histochemical changes of the enzyme activities of adrenal cortex after hemisection of spinal cord in rats.
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Over time it takes control of the whole person because chemical changes in the brain lead to disturbances of thought, perception, information processing and behaviour.
Times, Sunday Times
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Some kinds of acids react on metals to cause chemical changes.
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When these amido bodies are treated with sodium nitrite and hydrochloric acid they undergo a chemical change, the feature of which is that the nitrogen atoms present in the amido compound and in the nitrite unite together and a new compound is produced which is called a diazo compound, and the operation is called "diazotisation".
The Dyeing of Cotton Fabrics A Practical Handbook for the Dyer and Student
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When songwriting, he feels he undergoes some sort of chemical change which makes him detached and unresponsive once outside the office.
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There are many complex interacting possibilities as to the relationships between these and other biochemical changes, and a variety of symptoms may result, including extreme exhaustion.
The Beat Fatigue Workbook - how to identify the causes
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The radiation causes chemical changes in the brain that resemble symptoms of Alzheimer's.
The Sun
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The acrosome reaction is the chemical change that enables a sperm to penetrate an egg.
A Baby at Last!
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People can become addicted to the biochemical changes brought about by heavy exercise.
Times, Sunday Times
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In fairness, any radiation that can ionize an atom can affect chemical changes in a substance.
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This is misleading, since there are several chemical processing steps required, with consequent chemical changes that are not reflected in the term 'corn sugar.'
High-fructose corn syrup is not ‘corn sugar’
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As pointed out by Mr.B. J. B.rnett (see Introduction), many photographic processes can be devised by basing them upon the various chemical changes, of which uranous oxide, reduced by light from the uranic nitrate or sulphate, is susceptible by means of metallic or organic reagents.
Photographic Reproduction Processes
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The radiation causes chemical changes in the brain that resemble symptoms of Alzheimer's.
The Sun
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If the patient had polio, the fluid showed cellular and chemical changes consistent enough for physicians to diagnose the disease.
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Fighting for its life causes chemical changes in the flesh.
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As the lens ages, it increases in weight and thickness, and its proteins undergo a chemical change.
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The challenge will be in identifying the biochemical changes associated with mutations for each neurodegenerative disease.
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The animals were not challenged with antigen after sensitization as the aim was to study the biochemical changes due to sensitization alone.
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This water vapor can undergo a chemical change if enough additional heat is added, when it decomposes into oxygen gas and hydrogen gas.
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In its broadest sense a living unit or entity is one that can direct chemical changes by catalysis, and at the same time reproduce itself by autocatalysis, that is, by directing the formation of units like itself from other, and usually simpler chemical substances.
Citizendium, the Citizens' Compendium - Recent changes [en]
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The addition of sap to latex begins complex chemical changes that provide a much improved material for tools, figurines and medicines, in a process akin to vulcanization, invented three thousand years later by Charles Goodrich.
Did You Know? Bouncing balls and Mexican ingenuity
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Many of them are enzymes, molecules that catalyse processes of chemical change.
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Enhanced UV-B radiation levels affect litter decomposition directly (photodegradation and mineral nutrient cycling) and indirectly (chemical changes in plant tissues) and also affect the biochemical cycling of carbon [24].
Effects of ultraviolet-B on forest vegetation in the Arctic
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Energy is essentially expended in three ways: Energy is needed for the chemical changes that go on inside our bodies.
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The other 3-carbon molecules are used to rebuild 5-carbon compounds again through a series of complex chemical changes to continue the circulation of chemical reactions in dark reaction.
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When two or more elements combine and form a compound, a chemical change takes place.
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Chemical shift equivalence by rapid interconversion of structures may occur due to rapid rotation about bonds or due the rapid chemical changes such as keto-enol tautomerism.
Citizendium, the Citizens' Compendium - Recent changes [en]
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If the patient had polio, the fluid showed cellular and chemical changes consistent enough for physicians to diagnose the disease.
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This triggers chemical changes in your body, which reacts as if threatened by a foreign substance.
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It is also believed by some that the chemical change in the muscle partakes of a fermentive character; that, under the influence of the proper ferments, the substances break up into other and simpler products, thus setting free heat and force; and that this chemical change is followed by a secondary oxidation by the oxygen in the arterial blood, thereby forming carbonic acid and water, as in all putrefactive processes.
Hygienic Physiology : with Special Reference to the Use of Alcoholic Drinks and Narcotics
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The causes of mania and depression are biochemical changes in adrenergic and dopaminergic brain messengers.
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If the patient had polio, the fluid showed cellular and chemical changes consistent enough for physicians to diagnose the disease.
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The electrolytical action is of course easily understood, but the chemical changes that take place need an explanation.
Scientific American Supplement, No. 799, April 25, 1891
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As pointed out by Mr.B. J. B.rnett (see Introduction), many photographic processes can be devised by basing them upon the various chemical changes, of which uranous oxide, reduced by light from the uranic nitrate or sulphate, is susceptible by means of metallic or organic reagents.
Photographic Reproduction Processes
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Section 14) we have defined, as a chemical change in an upward direction -- less stable and more complex compounds are built up in the processes of vegetable and animal activity towards protoplasm; kataboly is a chemical running down; metaboly is a more general term, covering all vital chemical changes.
Text Book of Biology, Part 1: Vertebrata
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The doctors who see biochemical changes as the cause argue that nutritional treatment or medication is required.
The Beat Fatigue Workbook - how to identify the causes
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The doctors who see biochemical changes as the cause argue that nutritional treatment or medication is required.
The Beat Fatigue Workbook - how to identify the causes
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The chemical changes that occur are not well understood, but include the ongoing liberation of aromatic molecules from nonaromatic complexes, and aggregation reactions among tannins and pigments that further lower astringency and cause a shift in pigment hues, usually toward the brown.
On Food and Cooking, The Science and Lore of the Kitchen
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When two or more elements combine and form a compound, a chemical change takes place.
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People can become addicted to the biochemical changes brought about by heavy exercise.
Times, Sunday Times
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In some products, particularly wine and beers, there may be chemical changes caused by sunlight and the packaging in this case should also be lightproof.
2 Types of food and prevention of deterioration
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It is precisely in this long sequence of physical and chemical changes that the astrophysicist and the astrochemist can find the means of pushing home their attack.
The New Heavens
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Coal forms by a slow process of chemical change.
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Coal forms by a slow process of chemical change.
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When two or more elements combine and form a compound, a chemical change takes place.
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The great diseases of the brain and spine, such as general paralysis, acute and chronic mania, and others, the author believes will all be shown to be connected with special chemical changes in neuroplasm, and that a knowledge of the composition and properties of this tissue and of its constituents will materially aid in devising modes of radical treatment in cases in which, at present, only tentative symptomatic measures are taken.
Scientific American Supplement, No. 520, December 19, 1885
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Calcium channel blockers such as nifedipine (Procardia) and diltiazem (Cardizem) interfere with the chemical change that enables sperm to penetrate the egg.
A Baby at Last!
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By the term chemical properties we have reference to the chemical composition of the soil, the chemical changes which take place in the soil, and the conditions which influence these changes.
The First Book of Farming
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The FAA, on other hand, said composites may be prone to chemical changes, delamination of internal layers and seepage of water or other fluids inside the structure, potentially causing damage as a result of freeing and melting.
FAA Sets Mandatory Retirement Dates for Jets
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This theory might extend further with perfect consistency, to account for icebergs of fresh water by repeated congelations, for it is plausible to assume that there are air strata of hot and cold at altitudes above the poles, passing through which the sea water would alternate from rain to hail, until the chemical change to fresh water is complete.
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The chemical change light effects in the diazotized primuline is not well known.
Photographic Reproduction Processes
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When the corpuscular theory of matter was developed and accepted (which could explain but not predict chemical changes in terms of transmutations), this belief was strengthened.
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Wherever a chemical change takes place , there is a new substance formed.
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When exposed to light, the photoresist undergoes a chemical change that alters its solubility in a certain solvent.
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Food irradiation uses gamma rays from cesium - 137 and cobalt - 60, which are capable of causing chemical changes in these foods.
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What is a chemical change?
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Or are such substances as putrescein, cadaverin, skatol or indol -- which are derived through chemical change in the putrescent mass -- contributors to the spread of the poisonous taint throughout the system?
Intestinal Ills Chronic Constipation, Indigestion, Autogenetic Poisons, Diarrhea, Piles, Etc. Also Auto-Infection, Auto-Intoxication, Anemia, Emaciation, Etc. Due to Proctitis and Colitis
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These chemical changes occur quite naturally.
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These chemical changes can lead to an increase in viscosity.
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Coal forms by a slow process of chemical change.
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Food irradiation uses gamma rays from cesium - 137 and cobalt - 60, which are capable of causing chemical changes in these foods.
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People can become addicted to the biochemical changes brought about by heavy exercise.
Times, Sunday Times
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It was generally accepted that chemical changes of matter were due to a certain affinity, though the origin of this affinity was absolutely unknown.
Nobel Prize in Chemistry 1903 - Presentation Speech
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In the flame of a burning match, trillions of molecules undergo chemical change.
The Harper Dictionary of Science in Everyday Language
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THE HUMAN BRAIN chemical nature of their surroundings by swimming away, and a positive chemotaxis, which is an adaptive response to the type of chemical change brought about by the presence of something edible.
The Human Brain
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Once there it causes chemical changes affecting memory and learning.
The Sun
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In fairness, any radiation that can ionize an atom can affect chemical changes in a substance.
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Iron corrodes so quickly that an item may become too hot to touch before cracking into pieces from internal pressure generated by chemical change.
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The term epigenetics refers to changes in phenotype or gene expression caused by chemical changes to the DNA, rather than changes in the DNA sequence itself.
ScreenTalk
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Some kinds of acids react on metals to cause chemical changes.
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Since the energy possessed by coal only becomes available when the coal is made to undergo a chemical change, it is sometimes called _chemical energy_.
An Elementary Study of Chemistry
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The morphological and biochemical changes typical of apoptosis are orchestrated by caspases, a family of cysteine proteinases, which cleave proteins after aspartate residue.
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In addition to fish, other aquatic creatures such as clams and daphnia are used as indicators of chemical changes.
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Once there it causes chemical changes affecting memory and learning.
The Sun
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We were now seeing the first evidence linking an increase in alcohol-craving behavior to permanent biochemical changes induced by long-term ingestion of alcohol—in itself a scientific confirmation of the folk belief that alcohol can cause alcoholism.
Alcohol and The Addictive Brain
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This system reads out the chemical changes electronically, amplifies the electronic signal and further processes it.
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These chemical changes occur quite naturally.
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People can become addicted to the biochemical changes brought about by heavy exercise.
Times, Sunday Times
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These chemical changes occur quite naturally.
