نتایج جستجو برای: cec

تعداد نتایج: 2291  

ژورنال: علوم آب و خاک 2015
ترابی گل‌سفیدی, حسین, دربندی, صابره, شعیبی نوبریان, محمدرضا,

CEC of the soil is the exchange sites of organic and inorganic soil colloids. Modeling and Estimation of CEC is a useful indicator for fertility. The new alternative approaches for estimating CEC are indirect methods based on intelligent models. In this research in order to estimate CEC, 485 soil samples were prepared from two regions, chaparsar (Mazandaran in northern Iran) and Bostanabad (Nor...

Journal: :Malaysian Journal of Science 2016

Journal: :Genetic Programming and Evolvable Machines 2008

Journal: :Materials Research-ibero-american Journal of Materials 2021

Abstract This work endeavors to investigate thermomechanical performance of carbon fabric reinforced epoxy composite (CEC) with fillers – hexagonal boron nitride (h-BN) and molybdenum disulfide (MoS2). The filler 2, 4, 6, 8 Wt.% was dispersed precisely in the resin through magnetic stirring ultrasonication, prepared loaded CEC using vacuum bag technique studied behavior at an elevated temperatu...

Journal: :Analytical chemistry 2002
Amy H Que Milos V Novotny

While developing a combination of capillary electrochromatography (CEC) with tandem mass spectrometry (MS) for the benefit of characterizing complex oligosaccharide mixtures, we needed highly efficient CEC columns operating in an "MS-friendly" mode. We demonstrate here novel types of polar, monolithic CEC columns that separate effectively complex mixtures of saccharides with the use of mobile p...

Journal: :Radiation protection dosimetry 2008
L Lança A Silva E Alves F Serranheira M Correia

Typical distribution of exposure parameters in plain radiography is unknown in Portugal. This study aims to identify exposure parameters that are being used in plain radiography in the Lisbon area and to compare the collected data with European references [Commission of European Communities (CEC) guidelines]. The results show that in four examinations (skull, chest, lumbar spine and pelvis), th...

Journal: :international journal of molecular and cellular medicine 0
mohsen pourghasem cellular and molecular biology research center (cmbrc), babol university of medical sciences, babol, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی بابل (babol university of medical sciences) ebrahim nasiri department of anatomical sciences, geilan university of medical sciences, rasht, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی گیلان (guilan university of medical sciences) shima sum department of social medicin, babol university of medical sciences, babol, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی بابل (babol university of medical sciences) hamid shafi department of urology, babol university of medical sciences, babol, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی بابل (babol university of medical sciences)

glycosaminoglycan (gag) has a pivot role in renal function and homeostasis. analysis of gag amount generally serves to determine gag alteration due to diabetes mellitus. critical electrolyte concentration (cec) staining can be an efficacy method to study gag amount changes. based on an experimental study, 20 male rats were randomly divided equally into two experimental and control groups. diabe...

Journal: :آب و خاک 0
یاسر استواری کامران عسگری حمیدرضا متقیان

introduction: estimation of cation exchange capacity (cec) with reliable soil properties can save time and cost. pedotransfer function (ptf) is a common method in estimating certain soil properties (e.g. cec) that has been wieldy used for many years. one of the common techniques that have been used to develop ptfs is multiple linear regressions. in this method, all easily obtained soil properti...

2013
Biqing Liang Chung-Ho Wang Dawit Solomon James Kinyangi Flavio J. Luizăo Sue Wirick Jan O. Skjemstad Johannes Lehmann

Aims: Soil black carbon (BC) has been shown to possess large amounts of cation exchange sites and surface charge, and is viewed as a potential soil amendment to improve nutrient retention and for pollutant remediation. This study investigated the nanoscale distribution of reactive functional groups and the binding of cations on the surface of micron-size BC particles, identified the key process...

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