نتایج جستجو برای: pom analyses
تعداد نتایج: 386585 فیلتر نتایج به سال:
Filter-feeding invertebrates consume phytoplankton and detritus and therefore serve as important mediators of the exchange of materials from nearshore pelagic to intertidal benthic ecosystems. Here, we evaluated the linkages between nearshore and intertidal systems on temperate rocky reefs on the coasts of Oregon, USA, and New Zealand’s South Island. We used differences in the concentrations of...
در این تحقیق افق های مشابه (a، ab، b1) از کاربریهای جنگل پهنبرگ، جنگل سوزنیبرگ، و مرتع انتخاب و درصد خاک دانه های پایدار در آب آن ها تعیین شد. در هر یک از کلاسهای خاک دانه های پایدار افق a، مقادیر قطعات مواد آلی آزاد، بخش درون خاک دانه ای، و کمپلکسهای رس+سیلت بر حسب چگالی و اندازه تعیین و مقدار کربن و نیتروژن آن ها با دستگاه تجزیة عنصری chn اندازهگیری شد. در هر نوع کاربری غالباً با کاه...
Abstract In this work, the effect of functionalized hydroxyapatite (HAp-g-PEG) on thermal degradation behaviour and flammability polyoxymethylene copolymer (POM_C) was investigated. Organic–inorganic hybrid additive, obtained by grafting poly(ethylene glycol) HAp surface using 1,6-hexamethylene diisocyanate as a linker, has been incorporated into POM matrix through an extrusion process. TG anal...
Abstract Cold thermal energy storage is an active method for reducing the peak electrical demand and electricity consumption of air conditioners. This paper investigates two different cases: partial operating mode–load levelling (POM–LL) demand-limiting mode (DLM). 4E (energy, exergy, economic, environment) analyses along with a multi-objective optimization process based on genetic algorithm ap...
Estrogens play a pivotal role in the development and progression of prostate cancer (PCa). Their actions are mediated by estrogen receptors (ERs), particularly ERbeta in the prostate epithelium. With the discovery of ERbeta isoforms, data from previous studies that focused principally on the wild-type ERbeta (ERbeta1) may not be adequate in explaining the still controversial role of ERbeta(s) i...
In children, any ureter greater than 7 mm in diameter is considered a megaureter based on measurements in fetuses greater than 30 weeks gestation and children <12 years. Primary megaureter (POM) is a result of a functional or anatomical abnormality involving the uretero-vesical junction. Although the endoscopic and surgical techniques to manage POM are successful, we thought that early interven...
Soil physical structure causes differential accessibility of soil organic carbon (SOC) to decomposer organisms and is an important determinant of SOC storage and turnover. Techniques for physical fractionation of soil organic matter in conjunction with isotopic analyses (dC, dN) of those soil fractions have been used previously to (a) determine where organic C is stored relative to aggregate st...
Two new mesogenic monomers, namely 3,3’-dimethoxy-4,4’di(hydroxyhexoxy)-N-benzylidene-o-Tolidine (Ia) and 4,4’-di(6-hydroxyhexoxy)-Nbenzylidene-o-Tolidine (IIa), were reacted with cadmium sulfide (CdS) via an in situ chemical precipitation method in ethanol to produce CdS nanocomposites. A series of different mass compositions of CdS with Ia and IIa ranging from 0.1:1.0 to 1.0:1.0 (w/w) were pr...
To explore the principle of chiral induction in inorganic clusters, chiral organic cations with two stereocenters, R- and S-BPEA, are used to encapsulate a series of polyoxometalates (POMs) bearing different structures and transition absorption bands in aqueous solution, constructing a series of chiral supramolecular complexes. Due to the induction of chiral organic cations, POMs possessing bot...
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