نتایج جستجو برای: saturated and unsaturated

تعداد نتایج: 16834143  

2012
M H Keshavarz

This work introduces a novel, reliable and simple correlation for predicting the flash point of various types of saturated and unsaturated hydrocarbons containing cyclic and acyclic paraffins, olefins, alkynes and aromatic hydrocarbons. It is shown that the new method is based on the number of carbon and hydrogen atoms and some specific molecular moieties, which can easily be used for any types...

Journal: :American journal of physiology. Endocrinology and metabolism 2009
Akito Kadotani Yo Tsuchiya Hiroyasu Hatakeyama Hideki Katagiri Makoto Kanzaki

In skeletal muscle, saturated free fatty acids (FFAs) act as proinflammatory stimuli, and cyclooxygenase-2 (COX-2) is a pro/anti-inflammatory enzyme induced at sites of inflammation, which contributes to prostaglandin production. However, little is known about the regulation of COX-2 expression and its responses to FFAs in skeletal muscle. Herein, we examined the effects of saturated and unsatu...

2009
Jiu Jimmy Jiao Haipeng Guo

[1] Most analytical and numerical models developed to analyze pumping test data focus on saturated flow below the water table. Traditionally the soil above the initial water table prior to pumping has been thought to have little influence on the test results and has usually been ignored. It is hypothesized that, if the unsaturated zone is capped by low-permeability soil, airflow in the unsatura...

Journal: :Journal of contaminant hydrology 2014
S E Vero T G Ibrahim R E Creamer J Grant M G Healy T Henry G Kramers K G Richards O Fenton

The true efficacy of a programme of agricultural mitigation measures within a catchment to improve water quality can be determined only after a certain hydrologic time lag period (subsequent to implementation) has elapsed. As the biophysical response to policy is not synchronous, accurate estimates of total time lag (unsaturated and saturated) become critical to manage the expectations of polic...

2005
C. H. Tsang C. K. Wong F. G. Shin

In ferroelectric materials, hysteresis behavior is very difficult to model due to its nonlinear and history-dependent characteristics. Among approaches that are able to describe unsaturated loops, many of them are either very complicated numerical procedures must be employed or the resulting loops contain some undesirable or defective features. In this work, a simple hysteresis model based on a...

Journal: :The Journal of biological chemistry 1948
V E PRICE J P GREENSTEIN

Two types of peptidases are present in tissues, one of which catalyzes the hydrolysis of the saturated, RCHCONHCHR’COOH,l the other that of the unsaturated, RCHCONHC(=CHR’)COOH~RCHCON=C(CH~R’)COOH, peptide bonds (cf. (1)). These are designated, respectively, peptidases and dehydropeptidases. We have reported the rates of hydrolysis of variously constituted dehydropeptides in extracts of rat tis...

Journal: :Journal of lipid research 1974
T Shimojo M Abe M Ota

Phosphatidylcholine preparations containing saturated and unsaturated molecular species were subjected to KMnO(4)-NaIO(4) oxidation in aqueous acetic acid, which left only disaturated species intact. After the oxidation, the remaining intact phosphatidylcholine was separated by thin-layer chromatography. The procedure could be used as a simple and rapid method for microdetermination of the satu...

Journal: :Japanese Journal of Limnology (Rikusuigaku Zasshi) 1989

2004
Jozsef Szilagyi

Aquifer drainage was numerically simulated by a coupled, unsaturated-saturated flow equation. The effect of the vadose zone on aquifer parameter predictions of classical hydraulic theory was investigated. Saturated-zone hydraulic theory was shown to be fairly robust in estimating the saturated hydraulic conductivity but less so in estimating drainable porosity, mainly because of the much tighte...

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