(a.) Pertaining to chemistry; characterized or produced by the forces and operations of chemistry; employed in the processes of chemistry; as, chemical changes; chemical combinations.
(n.) A substance used for producing a chemical effect; a reagent.
Example Sentences:
(1) Brain and ganglia of embryonic Periplaneta americana were grown for 2 to 3 weeks in a chemically defined medium.
(2) Stimulation of human leukocytes with various chemical mediators such as TPA, f-Met-Leu-Phe, LTB4, etc.
(3) This suggested that the chemical effects produced by shock waves were either absent or attenuated in the cells, or were inherently less toxic than those of ionizing irradiation.
(4) At 36 h postsurgery, RBCs were examined by 23Na-NMR by using dysprosium tripolyphosphate as a chemical shift reagent.
(5) The absorption of ingested Pb is modified by its chemical and physical form, by interaction with dietary minerals and lipids and by the nutritional status of the individual.
(6) Changes in cardiac adenosine triphosphate (ATP), phosphocreatine (PCr) and inorganic phosphate (Pi) were followed and intracellular pH (pHi) was estimated from the chemical shift of Pi.
(7) Maximal aberration yields were observed for 2,4-diaminotoluene, 2,6-diaminotoluene and cytosine beta-D-arabinofuranoside from 17 to 21 h, eugenol from 15 to 21 h, cadmium sulfate from 15 to 24 h and 2-aminobiphenyl, from 17 to 24 h. For adriamycin at 1 microM, the % aberrant cells remained elevated throughout the period from 9 to 29 h, while small increases at 0.1 microM ADR were found only at 13 and at 25 h. For most chemicals the maximal aberration yield occurred at a different time for each concentration tested.
(8) 2.39pm BST The European Union called for a "thorough and immediate" investigation of the alleged chemical attack.
(9) "With hyperspectral imaging, you can tell the chemical content of a cake just by taking a photo of it.
(10) The deactivated columns had the residual silanols on the silica gel chemically inactivated to reduce the interaction with basic groups or analytes.
(11) A sperm whale myoglobin gene containing multiple unique restriction sites has been constructed in pUC 18 by sequential assembly of chemically synthesized oligonucleotide fragments.
(12) On the basis of obtained data on the uniformity of chemical compounds of the secretion of glands belonging to different groups their common origin has been suggested.
(13) In spite of important differences in size, chemical composition, polymer density, and configuration, biological macromolecules indeed manifest some of the essential physical-chemical properties of gels.
(14) In contrast sham-hemodialysis in group CA and group PS, respectively, did not result in significant increases in amino acid efflux from the leg implying that the protein catabolic effect of blood membrane contact depends on the chemical properties of dialysis membranes.
(15) We investigated this suppression quantitatively, using a chemical assay for cell-bound and dissolved capsular polysaccharide.
(16) We previously established that the binding constant (Ka) of this receptor site for the chemically synthesized model AGE, 2-(2-furoyl)-4(5)-(2-furanyl)-1H- imidazole-butyric acid (FFI-BA), on cells of the mouse macrophagelike cell line RAW 264.7 is identical to that for AGE proteins.
(17) They included lectins such as wheat germ agglutinin (WGA), concanavalin A and phytohemagglutinin, and a chemical cross-linker, glutaraldehyde, in addition to anti-IL-2R monoclonal antibodies, HIEI and H-47.
(18) The reduction of such potentials can be explained in terms of collision between the antidromic volleys and those elicited orthodromically by chemical and thermic stimulation.
(19) In certain cases, the effects of these substances are enhanced, in others, they are inhibited by compounds that were isolated from natural sources or prepared by chemical synthesis.
(20) The use of gaseous insecticides in the chemical control of T. infestans is discussed.
Chemist
Definition:
(n.) A person versed in chemistry or given to chemical investigation; an analyst; a maker or seller of chemicals or drugs.
Example Sentences:
(1) The conference was held from December 3 to 5, 1990 in the Washington, DC area and was sponsored by the American Association of Pharmaceutical Scientists, US Food and Drug Administration, Federation International Pharmaceutique, Health Protection Branch (Canada) and Association of Official Analytical Chemists.
(2) Not only was an alarming amount of fissile material going missing at the company, Nuclear Materials and Equipment Corporation (Numec), but it had been visited by a veritable who's-who of Israeli intelligence, including Rafael Eitan, described by the firm as an Israeli defence ministry "chemist", but, in fact, a top Mossad operative who went on to head Lakam.
(3) The American actor played sinister rookie methylamine chemist Todd Alquist in the final season of Breaking Bad.
(4) A chemist working at Iran's main uranium enrichment plant was killed on Wednesday when attackers on a motorbike stuck a magnetic bomb to his car.
(5) Combining the data from cutaneous malignant melanoma over both sexes and both registries the occupations with the highest incidence ratios (expressed as a percentage) were: airline pilots, incidence ratio (IR) = 273, (95% confidence limits 118-538); finance and insurance brokers IR = 245 (140-398); professional accountants IR = 208 (134-307); dentists IR = 207 (133-309); inspectors and supervisors in transport IR = 206 (133-304); pharmacists IR = 198 (115-318); professionals not elsewhere classified IR = 196 (155-243); judges IR = 196 (126-289); doctors IR = 188 (140-248); university teachers IR = 188 (110-302); and chemists IR = 188 (111-296).
(6) As PM he would have tyrannised his cabinet as much as Thatcher did, but his economic mix of policies might have worked better than the lawyer-chemist's book-learning.
(7) A closer association between analytical chemists and toxicologists should prove beneficial to both and to the progress of science.
(8) The results were compared with those obtained using the Association of Official Analytical Chemists official digestion technique, which involves the use of nitric and sulphuric acids, and a second technique based on the action of nitric and perchloric acids.
(9) The peptide chemists are facing formidable challenges borne by a continually increasing interest in the pharmaceutical uses of peptides.
(10) While 92% doctors were aware about WHO-ORS, none of the chemists and only 4% nurses had this awareness.
(11) In an anthrax scare, talcum powder is removed from the chemist's shelves.
(12) On Wednesday, the AfD co-leader Frauke Petry – a former chemist who sees herself as representative of the party’s “realist” wing – announced via a video message on her Facebook page that she would not run as her party’s candidate in the September elections, citing the lack of a coherent strategy and expressing frustration with her party colleagues’ course of “maximum provocation”.
(13) The possibility of separating lipid materials on the basis of the number, type, and position of the unsaturated centers they contain, by virtue of the complexing of these unsaturated bonds with silver ions, provides a relatively recent but now very important addition to the range of separatory methods available to lipid chemists and biochemists.
(14) Computer-aided drug design is a current reality, but one that, at its best, supplements an incomplete methodology with the traditional insight and wisdom of an experienced medicinal chemist.
(15) To this end, a 'polymorphic programming environment' has been developed which represents both an expert system and a high-level language for theoretical chemists and molecular biologists.
(16) The Association of Official Analytical Chemists (AOAC) test for assessing the tuberculocidal activity of disinfectants has been shown to be variable.
(17) Chemists and other scientists don't have to battle with that."
(18) The official Association of Official Analytical Chemists (AOAC) spectrophotometric methods for both drugs are long, nonspecific, and require standard addition techniques.
(19) Each job history was reviewed by a team of chemists and industrial hygienists who translated it into a history of occupational exposures.
(20) For that purpose, chemists instead had to use quantum physics.