نتایج جستجو برای: partitioning temperature

تعداد نتایج: 487095  

Journal: :Environmental toxicology and chemistry 2004
Deborah A Davidson Andrew C Wilkinson Lynda E Kimpe Jules M Blais

The exchange of chlorinated organic pollutants between air and vegetation in cold, mountain environments was investigated through the extraction of coniferous vegetation and high-volume air samples collected from the Canadian Rocky Mountains during the summers of 1999 and 2000. Concentrations of several compounds in vegetation increased as temperatures decreased, whereas atmospheric concentrati...

2010
Anne Willem Omta Stephanie Dutkiewicz Michael J. Follows

[1] We develop and extend a theoretical framework to analyze the impacts of changes in temperature and alkalinity on the ocean‐atmosphere carbon partitioning. When investigating the impact of temperature, we assume that there is no change in the global ocean alkalinity. This idealized situation is probably most relevant on intermediate timescales of hundreds to thousands of years. Our results s...

2003
Ian D. Hutcheon Edward M. Stolper

This experimental study examines the mineral/ melt partitioning of incompatible trace elements among high-Ca clinopyroxene, garnet, and hydrous silicate melt at upper mantle pressure and temperature conditions. Experiments were performed at pressures of 1.2 and 1.6 GPa and temperatures of 1,185 to 1,370 C. Experimentally produced silicate melts contain up to 6.3 wt% dissolved H2O, and are satur...

Single Nucleotide Polymorphisms (SNPs) are the most usual form of polymorphism in human genome.Analyses of genetic variations have revealed that individual genomes share common SNP-haplotypes. Theparticular pattern of these common variations forms a block-like structure on human genome. In this work,we develop a new method based on the Perfect Phylogeny Model to identify haplo...

Journal: :The British journal of nutrition 2005
Fredrik B Sandberg Gerry C Emmans Ilias Kyriazakis

Literature solutions to the problem of protein and energy partitioning in the growing pig are quantitatively examined. Possible effects of live weight, genotype and food composition on the marginal response in protein retention to protein and energy intakes, on protein and energy-limiting foods are quantified. No evidence was found that the marginal response in protein retention to ideal protei...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه مازندران - دانشکده منابع طبیعی 1387

چکیده ندارد.

Journal: :journal of agricultural science and technology 2010
a. r. dadkhah h. grrifiths

this study investigated intra-specific variation in the growth parameters and dry mat-ter partitioning of sugar beet cultivars at different levels of salinity (0, 50, 150, 250 and 350 mm nacl + cacl2 in 5:1 molar ratio) using four cvs, one british (madison) and three iranian cvs (7233-p12, 7233-p21 and 7233-p29). the plants were grown in a controlled greenhouse environment for about 18 weeks. a...

Journal: :Biophysical journal 2016
Derek Marsh

Phospholipid self-assembly is the basis of biomembrane stability. The entropy of transfer from water to self-assembled micelles of lysophosphatidylcholines and diacyl phosphatidylcholines with different chain lengths converges to a common value at a temperature of 44°C. The corresponding enthalpies of transfer converge at ∼-18°C. An equation of state for the free energy of self-assembly formula...

Journal: : 2023

In this study, the effect of quenching and partitioning (Q&P) heat treatment on structural mechanical properties AISI 4130 steel was investigated. The Q&P process followed at a quench temperature 270 oC three different temperatures 270, 330, 380 oC. phase characterization prepared spicimens were done using X-ray diffractometer (XRD) scanning electron microscopy (SEM), respectively. samples also...

Journal: :Hydrology and Earth System Sciences 2022

Abstract. An inconsistent relationship between precipitation and runoff has been observed drought non-drought periods, with less usually during droughts than would be expected based solely on deficit. Predictability of these shifts in the precipitation–runoff is still challenging, largely because underlying hydrologic mechanisms are poorly constrained. Using 30 years data for 14 basins Californ...

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