(1) These capabilities considered together with recent evidence for Hg emission as a regular part of volcanic and geothermal processes provide the basis for our proposal that Hg-sensitized ultraviolet photo-reactions may have played a significant part in abiogenetic organic synthesis on the primative earth.
Biogenetic
Definition:
(a.) Pertaining to biogenesis.
Example Sentences:
(1) Stereochemical and biogenetic studies of mycolic acids isolated from M. marinum showed that the absolute configurations of the chiral centres occurring in the mycolates are identical to those of the other mycobacterial species examined so far.
(2) Examination of the proton-decoupled pulse and Fourier transform (13)C spectra of rifamycin W biogenetically enriched with [1-(13)C]-, [2-(13)C]-, and [3-(13)C]propionate and with [1-(13)C]acetate has revealed that the alignment of acetate and propionate units corresponds to that previously proposed for rifamycin S. Washed mycelium from a rifamycin B-producing strain of N. mediterranei transformed rifamycin W into rifamycin B.
(3) The absolute configuration is proposed based on the octant rule and a biogenetic pathway for this type of homoisoflavan is briefly discussed.
(4) The biogenetic origin of the carbon atoms in tenellin has been established by adding 13C-enriched compounds to cultures of Beauveria bassiana, and determining the isotopic distribution in the metabolite by 13C nuclear magnetic resonance spectrometry.
(5) The reactivity of soils varies widely as geological and sedimentological conditions offer typical but different environments: gravels, chalk soil, clay, salt soils, sands, cave earths are examples of this wide variety, including atmospheric and biogenetic implications.
(6) The biogenetic origin of the angucycline antibiotics urdamycins A-D was studied by feeding experiments with isotope labeled precursors and by NMR analysis.
(7) The increasing diversity of purpose-built, synthetic and biogenetically engineered pharmaceuticals has led to a revival of interest in the pharmacological possibilities for the treatment of voice disorders.
(8) The biogenetic significance of the presence of these limonoids in T. ouabanguienis is discussed.
(9) The close relationship of the eremophilane sesquiterpenes and the spiro sesquiterpenes, which follows from the biogenetic derivation of eremophilone by Robinson, is the basis for the synthetic strategy under discussion leading to chiral spiro sesquiterpenes.
(10) The location of five of the six labelled hydrogen atoms at C-3, C-9, C-18 and C-19 (two) confirms that the mechanism of cyclization of squalene expected from the biogenetic isoprene rule is functioning in vivo.
(11) Because lead artifacts rarely accompanied the burials but lead was ubiquitous in the bones, we suggest a biogenetic origin for the lead.
(12) 1 may be formed biogenetically by condensation of a protoilludane aldehyde 4 with a malonate unit.
(13) The schizotypal personality category introduced in DSM-III reflects an initial effort to organize psychiatric diagnosis on a biogenetic basis.
(14) 1 and 2 are 4,5-seco-5, 10-frideoabietane derivatives and must be biogenetically derived from an abietane structure.
(15) Germacrene A, the elusive biogenetic "parent" of many sesquiterpenes, has been isolated from the spotted alfalfa aphid and identified as a new intrageneric aphid alarm pheromone.
(16) This finding strongly supports the view that the biogenetic pathways through which aldosterone is produced from progesterone are intact in this syndrome.
(17) Certain defects in the intratesticular androgen biogenetic system may lead to a significant impairment of gonadal function in total in the human male.
(18) Of particular interest, from a biogenetic point of view, are potential symbiotic relations between the bifidobacterial microflora and the breast-fed infant.
(19) A great deal of effort is being expended to investigate the biogenetic basis of the development and maintenance of obesity and the regulation of food intake.
(20) Biogenetically, mevinolin is formed from polyketide chains, one 18-carbon and one 4-carbon, derived from acetate in normal head to tail fashion.