How To Use Photochemical In A Sentence
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The second part is devoted to more practical studies, ranging from the characterisation of exotic interstellar molecules, the accurate determination of spectroscopic constants, excited states structures and EPR parameters through photochemical and charge-transfer processes, cluster chemistry and fullerenes, muonium chemistry, to the possible prediction of the response of materials to electric fields in view of nonlinear optical applications.
AvaxHome
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However, prolonged gazing at bright sources of light such as the sun can result in a loss of visual acuity through photochemical damage to the light-sensitive receptor cells in the retina.
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White foods like onions, garlic, chives, and leeks contain the photochemical allicin, which is being studied for its ability to lower cholesterol and blood pressure and increase the body's ability to fight infections.
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In this paper the authors report on the use of photochemically
active biocides for the treatment of a marine copepod, which is a model of parasitic sea lice.
Fishupdate.com
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Photomechanical reproductions are photographs that are printed in ink from plates produced by a bewildering variety of photomechanical, photochemical and photogalvanic means.
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Indicative of the importance of different chemicals interacting to cause smog, is the term photochemical smog.
Smog
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Ozone is an important tracer of photochemical processes in the atmosphere of Mars.
Ozone on Mars: Two Windows Better Than One | Universe Today
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Conclusion: MB photochemical method can inactivate bacteriophage f 2 , HIV - 1 and Japanese encephalitis virus in blood effectively.
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The appearance of such photochemical by-products as dianthracene and anthraquinone was monitored throughout the irradiation experiments.
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The fluorescence from the in vivo bleaching experiments thus reports a phenomenon that is not reported by measurements of the photochemical oxygen consumption in the spheroids.
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Because this type of smog forms when chemical reactions take place in the presence of sunlight, it is termed photochemical smog.
QCOnline Metro News
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Methods of measuring rapid, laser-induced photochemical oxygen consumption in spheroids have been described in detail elsewhere.
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In 1974 Mario Molina and Sherwood Rowland showed that chlorine compounds formed by the photochemical decomposition of chlorofluorocarbons (CFC or "Freon" gases) could decompose the stratospheric ozone.
The Nobel Prize in Chemistry 1995 - Presentation Speech
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The team also performed measurements of the ozone abundance over the Syrtis Major region, which will help to constrain photochemical models in this region.
Ozone on Mars: Two Windows Better Than One | Universe Today
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Likewise the fact that blood is red is surely a photochemical accident, not a design feature.
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The question we were working on was the photooxidation of toluene used as a solvent and a component of gasoline in photochemical smog.
The Scientific Method
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This is a problem for museums because photochemical oxidation is not required; the reactions take place in the dark.
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Novel self-ignition system incorporating metallic microwave condensing cones to activate MDELs in photochemical reacti ...
R&D Mag - News
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The small rings are made to move around the big ring by bathing them in light of different wavelengths; the light energy fuels the photochemical reaction to break the hydrogen bonds.
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This diabatic circulation also distributes ozone to lower altitudes in the high latitude regions, where, owing to a longer photochemical lifetime, it accumulates.
Factors affecting arctic ozone variability in the Arctic
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There are several possible mechanisms of photochemical bleaching, of which the commonest is probably photo-oxidation.
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Methods using photochemical treatment focus on inactivating bacteria, viruses, and parasites that are present in the component.
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A number of solid amine and diamine salts of cinnamic acids 2 were photochemically isomerized in low yields.
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Gravure is the costliest manufacturing process since the cylinder used requires copper plating and a special photochemical engraving or etching process.
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Researchers have readily developed a transmissive polymer, but its useful lifetime, curtailed by photochemical darkening, is still insufficient by almost three orders of magnitude.
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In sunlight, VOCs can react in the lower atmosphere with nitrogen oxides to generate photochemical smog.
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Finally, the chemistry of the stratosphere is dominated by the photochemical production and catalytic destruction of ozone.
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The decaying kinetics changed in different RCs, indicating that pheophytin replacement influenced the energy transduction and primary photochemical reaction in purple bacterial reaction centers.
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In sunlight, VOCs can react in the lower atmosphere with nitrogen oxides to generate photochemical smog.
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HO · may be an important factor to cause photochemical decolorization of congo red.
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Mixed with pollution from the growing number of heavy industries in northern China, the particles create photochemical smogs in Korea, Japan, and toxic winds that blow across the Pacific to the west coast of the United States, adding the problem of “global dimming” to that of global warming.5
When a Billion Chinese Jump
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The trend in the photophysical properties found in the emission spectra parallels the changes in the photochemical properties with the electron-donating or electron-withdrawing power of the substituent on the imidazole ligand.
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Photochemical activation of small molecules by means of transition metal complexes; photogeneration of hydrogen and oxygen; water photolysis; photoreduction of CO2; design of photoinduced charge separation systems.
Jean-Marie Lehn - Curriculum Vitae
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One influential school of thought focuses on the effects of oxidation reactions brought about by active oxygen species generated by photochemical reactions involving blue and UV light.
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Photochemical oxidants have been associated with impaired athletic performance in healthy cross - country runners .
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Instead, a method has been developed, the ‘light doubling’ technique, that allows the contribution of photochemical quenching to be transiently reduced to zero.
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Highly branched stilbene dendrimers were synthesized and their photochemical behavior was studied.
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In the photogravure process, the image is photochemically transferred to an etching plate that has been coated with a light-sensitive emulsion.
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I had some vague suspicions that it might not be a good idea to use a compound as photochemically unstable as biacetyl in food.
Hot Buttered
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The photochemical behavior of succimide in alcohol was investigated and the photolysis mechanism was proposed with the aid of DFT (density functional theory) calculations.
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They irradiated these glasses for five minutes with intense synchrotron radiation, which triggered the photochemical reduction of the gold ions to elemental gold.
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In the photogravure process, the image is photochemically transferred to an etching plate that has been coated with a light-sensitive emulsion.
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Photoproduct levels may reflect the net photochemical effects of light and oxygen within tissue on native photosensitizers.
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* Lead as activator in the fluorescent powder (1% lead by weight or less) of discharge lamps when used as sun tanning lamps containing phosphorus and when used as specialty lamps for diazo printing reprography, lithography, insect traps, photochemical and curling processes.,
Purchasing - Top Stories
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Here 130 million light-sensitive rods and cones cause photochemical reactions which transform the light into electrical impulses.
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His first problem involved the study, by flow techniques, of free radicals produced in gaseous photochemical reactions.
George Porter - Biography
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Ozonolysis and photolysis of alkene-terminated self-assembled monolayers on quartz nanoparticles: implications for photochemical aging of organic aerosol particles, J. Park, A.L. Gomez, M.L. Walser, A. Lin, and S.A. Nizkorodov, Phys.
Contributor: Maggie L. Walser
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Residents are exposed to photochemical smog, airborne particles, and alkane hydrocarbons (e.g., propane, isobutane, n-butane).
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Puralytics, winner of this year's CleanTech Open, uses photochemical processes work to break down or remove contaminants from water.
Andrew Winston: Innovation in Managing Water
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On Earth, methane produced by bogs or cows can remain for a decade; on Mars, for reasons that are not fully understood but imply a photochemical destruction process unlike anything now known, the gas is destroyed in under a year.
First Contact
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The photochemical reaction pathways of the different cycloadditions were explored on the basis of TD-DFT calculations using the Gaussian 98 implementation of the method developed by Scuseria and co-workers.
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In sunlight, VOCs can react in the lower atmosphere with nitrogen oxides to generate photochemical smog.
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he determined unique mechanisms for the photochemical reactions
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Ozonolysis and photolysis of alkene-terminated self-assembled monolayers on quartz nanoparticles: implications for photochemical aging of organic aerosol particles, J. Park, A.L. Gomez, M.L. Walser, A. Lin, and S.A. Nizkorodov, Phys.
Contributor: Maggie L. Walser
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In comparison with the rhenium complexes the manganese chemistry is of interest, primarily because of the wide range of oxidation states, reactivity of the complexes and photochemical and photophysical properties.
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In addition, the carrier molecule may also protect some dyes from chemical, photochemical or radiolytic degradation.
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With its photochemical cycle, bR represents a reversible photochromic system in addition to its charge translocation property.
