نتایج جستجو برای: 12 at 4
تعداد نتایج: 4724224 فیلتر نتایج به سال:
Matrix isolation IR spectroscopy has been used to study the vacuum pyrolysis of hexamethylcyclotrisiloxane (D3), octamethylcyclotetrasiloxane (D4) and decamethyl cyclopentasiloxane (D5), and the results interpreted in the context of various kinetic models. In particular, it is shown that the significant pyrolysis products--which include CH3, CH4, C2H2, C2H4, C2H6 and SiO--may be satisfactorily ...
CONTEXT Age at menarche (AAM) is an important trait both biologically and socially, a clearly defined event in female pubertal development, and has been associated with many clinically significant phenotypes. OBJECTIVE The objective of the study was to identify genetic loci influencing variation in AAM in large population-based samples from three countries. DESIGN/PARTICIPANTS Recalled AAM ...
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