Sentence examples for chemicals or by from inspiring English sources

A layer can be removed, in entirety or in part, either by etching away the material with strong chemicals or by reactive ion etching (RIE).

A tough, transparent plastic resistant to attack by chemicals or by weathering, it is commonly manufactured in the form of a film and applied as a protective coating for outdoor surfaces such as building siding or solar collectors.

These processes are particularly active in soil A horizons (usually 1 metre [about 39 inches] deep or less) where the humus is essential to the detoxification mechanisms by blocking the reactivity of toxic chemicals or by microbial degradation.

A poet such as Kamble may be said to have committed terrorism if he has acted "by using bombs, dynamite or other explosive substances or inflammable substances or firearms or other lethal weapons or poisonous or noxious gases or other chemicals or by any other substances (whether biological radioactive, nuclear or otherwise) of a hazardous nature or by any other means of whatever nature".

To bear this in mind, our strategy is to activate CO2 either with the presence of electron-rich chemicals or by hydrogen, and to convert CO2 with a coupling reaction in some case.

But at high concentration, highly reactive free radical and oxygen species produced either by exogenous chemicals or by body metabolic process leads to the oxidation of nucleic acid, lipid, protein and eventually high oxidative stress may result in breaking and coupling of DNA.

Contamination of food by chemicals can result from their use on agricultural commodities; accidents or misuse during food handling and processing; nucler weapon testing and operation of nuclear power plants; and disposal of industrial chemicals or by-products with subsequent dispersal into the environment.

These issues can be addressed by a chemical-by-chemical or model-by-model analysis, if necessary.

An organism can minimize the potential damage of absorbed toxins by excreting the chemical or by changing the chemical into a different chemical (biotransformation), or by both methods.

"The end result is the same, whether you're talking about religious or cosmic or political beliefs, or being affected by a chemical or by a relationship".

(See also action potential.) Eccles's research, which was based largely on the findings of Hodgkin and Huxley, settled a long-standing controversy over whether nerve cells communicate with each other by chemical or by electric means.