(n.) That branch of science which treats of the composition of substances, and of the changes which they undergo in consequence of alterations in the constitution of the molecules, which depend upon variations of the number, kind, or mode of arrangement, of the constituent atoms. These atoms are not assumed to be indivisible, but merely the finest grade of subdivision hitherto attained. Chemistry deals with the changes in the composition and constitution of molecules. See Atom, Molecule.
(n.) An application of chemical theory and method to the consideration of some particular subject; as, the chemistry of iron; the chemistry of indigo.
(n.) A treatise on chemistry.
Example Sentences:
(1) It may be due to relative nonreactivity of ascorbic acid free radical that free radical chain reactions, found commonly in radical chemistry, do not occur in the scavenging reaction by ascorbic acid.
(2) We have determined by protein chemistry methods the amino acid sequence of light chain 2 from Acanthamoeba castellanii myosin-II (ALC2).
(3) Reduced mineral absorption is fairly well documented and has sound theoretical support from basic chemistry.
(4) The chemistry involved reaction rate constant measurements of MSF hydrolysis and for reactions with phenolic, amine, oxime, hydroxamic acid, phenyl N-hydroxycarbamate, and hydroxylamine compounds and cupric imidazole and bipyridyl complexes.
(5) We support the view that catalysis by metalloenzymes may be a reflection of the chemistry of the metal ion itself as a Lewis acid, and that perhaps too much emphasis has been placed on supposed special characteristics (such as strains, "entasis") of the enzyme-metal ion association.
(6) Ion cyclotron resonance spectroscopy yields information on many aspects of ion-molecule chemistry.
(7) --The frequency of common clinical manifestations (eg, headache, fever, and rash) and laboratory findings (eg, leukocyte and platelet counts and serum chemistry abnormalities) of patients with infectious diseases was tabulated.
(8) The reason we have postulated that one-electron oxidation plays an important role in the activation of PAH derives from certain common characteristics of the radical cation chemistry of the most potent carcinogenic PAH.
(9) The fact that sulfinate salts show activity, both ip and po, suggests that the -SO2Na moiety deserves more attention in medicinal chemistry.
(10) Overall adverse reactions were more frequent with the high dose group especially with respect to blood chemistry and gastrointestinal reactions.
(11) There were no significant effects on the haematology, serum chemistry and urinalysis and no compound-related effects on survival.
(12) In a report published online by the journal Atmospheric Chemistry and Physics , experts from Europe and the US estimated that the quantity of the radioactive isotope caesium-137 released at the height of the crisis was equivalent to 42% of that from Chernobyl.
(13) Physiological chemistry stayed a part of physiology until 1939 when the Institute of Physiological Chemistry was finally founded.
(14) Organosilicon chemistry is easily understood because a few generalizations allow us to compare it with the chemistry of carbon, hydrogen and the metals.
(15) Unfortunately, few reflections concern the definition of this criterion, which often is little discussed in the other divisions of the pure and applied chemistry.
(16) Research Institute of Endocrinology and Hormone Chemistry, Khar'kov It was shown that realization of a neoplastic process in the breast is determined, in particular, by the chemical structure of agents employed and their dosage.
(17) There was no change in blood counts or serum chemistry values.
(18) Preoperatively, blood chemistry studies were done in addition to palpation of the abdomen.
(19) Hematologic and clinical chemistry values were similar for all groups.
(20) The TN of some fishes and mammals contains neurons immunoreactive (ir) to gonadotropin-releasing hormone (LHRH), and to several other neuropeptides and neurotransmitter systems, but there is little information on TN chemistry in other vertebrate taxa.
Inert
Definition:
(a.) Destitute of the power of moving itself, or of active resistance to motion; as, matter is inert.
(a.) Indisposed to move or act; very slow to act; sluggish; dull; inactive; indolent; lifeless.
(a.) Not having or manifesting active properties; not affecting other substances when brought in contact with them; powerless for an expected or desired effect.
Example Sentences:
(1) In a control study an inert stereoisomer, d-propranolol, did not block the ocular dominance shift.
(2) Gastric reservoir reduction, wrapping the stomach with an inert fabric, is one such procedure.
(3) Utilization of inert materials like teflon, makrolon, and stainless steel warrants experimental and possibly clinical application of the developed small constrictor.
(4) The results obtained indicate that the rate of cellular uptake and accumulation of the inert aminoacid increase with time as the fraction of oxygen is reduced.
(5) To estimate model parameters (load and tube compliances, tube inertances, characteristic impedances, and peripheral resistances) we measured ascending aortic pressure and flow in a group of five open-chest, anesthetized dogs.
(6) Such an 'inert tube' model may be adequate to describe the inhalation and exhalation kinetics of inert vapours, for example non-polar solvents which have a low water solubility.
(7) A large decrease in the number of macrophages showing EAC receptors was found after treatment of the cells with BCG, but not "inert" particles such as latex and zymosan.
(8) These data, indicative of a relative inertness of physiological functions of nervous pointer dogs compared with normal pointers, are consistent with the behavioral and some of the biochemical findings previously reported.
(9) From the original concept of encapsulating hemoglobin in an inert shell, LEH has evolved into a fluid proven to carry oxygen, capable of surviving for reasonable periods in the circulation, and amenable to large-scale production.
(10) The effects of helium and argon, inert gases, on oxygen consumption have been studied on liver tissue of white rats who were delivered different fatty products plus to basic food).
(11) Model predictions based upon these data compare favorably with published reports of isobaric inert gas supersaturation, as well as several previously unpublished observations.
(12) We concluded that the inert soluble gas method is capable of measuring in vivo the perfusion and a water compartment of the intact tracheal mucosa.
(13) A non-significant reduced risk of cervical cancer was associated with copper IUD use, indicated by an adjusted odds ratio (OR) of 0.6 (95% Cl: 0.3-1.2), but virtually no effect was found for inert IUD use (OR = 1.1, 95% Cl: 0.9-1.7).
(14) Within double-stranded DNA, it is kinetically inert in 1 M NaClO4 and becomes labile as the salt concentration is decreased.
(15) The glycohistochemical probes used consisted of conjugates of a labeled, histochemically inert carrier protein and various covalently linked, histochemically crucial sugar moieties.
(16) Tumour uptake of the inert, neutral complex 67Ga-9N3 and the tumour:blood concentration ratio (1,4,7,triazacyclononane-1,4,7, triacetic acid) were measured in mice bearing xenografts of the human melanotic melanoma HX118.
(17) Characteristics of cutaneous gas exchange in amphibians were studied by analysis of the equilibration kinetics of an inert test gas in salamanders which have neither lungs nor gills.
(18) Discoidal substrates for purified human lecithin-cholesterol acyltransferase were prepared with human apolipoprotein A-I, cholesterol, and egg phosphatidylcholine (PC) or dipalmitoyl PC, including dihexadecyl PC in various proportions as an enzymatically inert dilutor of the interfacial PC substrate.
(19) For many years, the dental profession worked mainly with rather inert restorative materials that had a limited contact with vital tissue, and the opportunity for local and systemic complications was minimal.
(20) The results support the hypothesis that mild steel welding and to a lesser extent stainless steel welding with tungsten inert gas is associated with reduced semen quality at exposure in the range of the Danish process specific threshold limit values of welding.