Results 161 to 170 of about 3,162 (208)
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Immune Alteration Associated with Exposure to Toxic Chemicals
Toxicology and Industrial Health, 1992Immunological abnormalities including lymphocyte subset, lymphocyte immune functional assays, chemical antibodies, and different markers for autoimmune response were examined in individuals exposed to a variety of chemicals in computer manufacturing plants.
A, Vojdani, M, Ghoneum, N, Brautbar
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The electrocardiographic effects of alterations in concentration of plasma chemicals
American Heart Journal, 1955Abstract The naturally-occurring alterations in concentration of plasma chemicals which are known to produce configuration electrocardiographic changes are hypocalcemia, 1–3 hyperkalemia, 1–14 and hypokalemia. 2,3,12 Experimental evidence suggests that extracellular, not intracellular, concentration is the factor producing electrocardiographic ...
R F, HERNDON, W H, MERONEY, C M, PEARSON
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Mineralogical and Chemical Alteration
2016The chapter discusses the various kinds of mineralogical and chemical alteration of pottery buried in the soil. The effects have been studied by many archaeometrists (mostly using XRD, XRF, NAA) on the basis of three approaches: comparative studies of pottery from a single workshop buried under different conditions, analysis of profiles of single ...
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Structural alterations in deoxyribonucleic acid on chemical ethylation
Archives of Biochemistry and Biophysics, 1975Abstract Ethylation of DNA by diethyl sulfate gave 7-ethylguanine as the major product. Dimethyl sulfate was much more reactive than diethyl sulfate in forming 7-alkylguanine. The hydrodynamic properties of DNA did not change as a direct consequence of ethylation.
E, Holwitt, A I, Krasna
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Chemical-Mediated Alteration of Antibiotics
2019Bacteria have evolved resistance mechanisms against currently available antibiotics. They have acquired resistance by mutating and altering the target sites, gene transfer, or chemical structure of antibiotics, etc. Chemical alteration of antibiotic is facilitated with the help of enzymes.
Sadhana Sagar +3 more
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Effects of Chemical Alteration in the Endolymph on the Cochlear Potentials
Acta Oto-Laryngologica, 1966The scala media of the guinea pig cochlea was perfused with isotonic KC1, Ringer's solution and perilymph. The cochlear potentials were recorded during and subsequent to the perfusion. Our results indicated that in those animals perfused with perilymph the cochlear potentials were more remarkably depressed than in those perfused with KC1 solution.
T, Konishi, E, Kelsey, G T, Singleton
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Mutagenic Consequences of the Alteration of DNA by Chemicals and Radiation
1991The induction of mutations in vivo is a process that involves the interaction of exogenous agents, the Biologically Reactive Intermediates (BRIs), with particular nucleotides in the DNA. The finding of “hot spots” (see Hsia et al., 1989) and of “mutator” strains of organisms (Modrich, 1987) indicates that superimposed on the primary interaction of BRIs
B, Strauss +3 more
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Chemical Alteration (Patination) of Stone
The South African Archaeological Bulletin, 1960and their causes. It must be admitted initially that the use of patination as an aid in assessing the relative order of cultural assemblages is limited and circumscribed. It is perhaps of less value in the field than the fluorine test. This latter is limited absolutely to sites at which both fluorine and bone are present.
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Canadian Journal of Biochemistry and Physiology, 1956
The rate with which n-butanol alters the properties of yeast catalase has been studied as a function of temperature and concentration of altering agent. Activation energies for catalase alteration lay within the rather narrow range of 20–23 kcal./mole, thus confirming a prediction made previously on the basis of the difference in energies of ...
J G, KAPLAN, W K, PAIK
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The rate with which n-butanol alters the properties of yeast catalase has been studied as a function of temperature and concentration of altering agent. Activation energies for catalase alteration lay within the rather narrow range of 20–23 kcal./mole, thus confirming a prediction made previously on the basis of the difference in energies of ...
J G, KAPLAN, W K, PAIK
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Alteration of Plant Growth by Chemicals
Bulletin of the Torrey Botanical Club, 1961To review all the clhemicals which effect the growth of plants is a hereulean task and eveni when writing books oni the subject, as we know it today, onie would inadvertently leave out or slight whole portions of the work. Therefore, in a short talk I really canniot detail anything on this subject.
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