نتایج جستجو برای: physical and chemical properties

تعداد نتایج: 17019113  

Journal: :Diversity 2022

The purpose of the present study was to perform bioinformatic analysis crystallin diversity in aquatic molluscs based on sequences NCBI Protein database. objectives were as follows: (1) some physical and chemical properties mollusc crystallins, (2) comparison crystallins with zebrafish cubomedusa Tripedalia cystophora (3) determination most probable candidates for role gastropod eye crystallins...

Journal: :آب و خاک 0
حجت امامی امیر لکزیان مهدی مهاجرپور

abstract different definitions have been proposed for soil quality. various soil properties have been suggetsted as soil quality indices by researchers. this research was conducted to study the relationship between slope of retention curve at its inflection point (s index) and other soil physical quality indices, because the reserches between s index and soil physical properties are little. thi...

Journal: :مهندسی بیوسیستم ایران 0
ساناز خلیقی داش آموخته کارشناسی ارشد، داشکده کشاورزی دانشگاه تربیت مدرس سلیمان عباسی دانشیار،دانشکدۀ کشاورزی دانشگاه تربیت مدرس، محمدحسین عزیزی عزیزی دانشیار،دانشکدۀ کشاورزی دانشگاه تربیت مدرس،

in this study, the morphological and chemical properties of carob pods and carob beans as well as the effect of different extraction, and purification methods on the physical and chemical properties of the purified gums have been investigated. in order to dehusk carob beans, boiling water as well as acidic methods were used. the endosperm powder was prepared and the effect of endosperm powder c...

A. EBRAHIMI D. GHANBARIAN S. YUNEJI Z. A. SHOJAEI

Some physical properties and chemical compositions of two cultivars (Semsouri and Shahabadi) of cantaloupe studied during four different stages of maturity from fruit set to completely ripe. The physical properties investigated were the geometric mean diameter (GMD), specific gravity (SG), mean firmness (MF), rind, seed (%) and flesh (%). The chemical compositions were Brix, Titrable Acidity (T...

M.A. Mohammadifar, N. Mollakhalili Meybodi,

Extracellular polymeric substances are defined as high molecular weight compounds secreted by the microorganisms in the surrounding area. Since these extracellular substances are mainly polysaccharide, they are named exopolysaccharide. Microbial exopolysaccharides composed of sugar residue have growing interest as a new class of microbial products which can be used in food, pharmaceutical, and ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان - دانشکده فیزیک 1390

in this thesis, barium ferrite nano particles were prepared by sol-gel method. their structural and magnetic properties of samples have been investigated using thermo gravimetric analysis (tg-dta), x-ray powder diffractometer (xrd), fourier transform infrared (ftir), scanning electron microscopy (sem), field emission scanning electron microscopy (fesem), ac susceptometer, vibrating sample magne...

Journal: Desert 2017
B. Zeinali S. Asghari Saraskanroud, V. Mohammadnejad

     It is widely known that the development of gullies causes the loss of a great amount of soil and can be considered as one of the principal causes of geo-environmental degradation. The study area of the present research is located in the eastern shores of Urmia Lake. This study sought to evaluate the rate of growth and effective factors on the area’s gully dynamic over a year. To achieve th...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده علوم 1376

this thesis deals with the construction of some function algebras whose corresponding semigroup compactification are universal with respect to some properies of their enveloping semigroups. the special properties are of beigan a left zero, a left simple, a group, an inflation of the right zero, and an inflation of the rectangular band.

Journal: Desert 2010
J. Mohammadi M. Dayani M. Naderi Khorasgani

This paper presents a survey on soil Pb concentration around Sepahanshahr town located in vicinity of Isfahan. Due to the lack of regulation and environmental education and awareness, Sepahanshahr is now a rapid growing residential area suffering from the considerable consequences of poorly regulated mining activities operating in its vicinity. The aim of this study is to explore the spatial st...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده علوم 1387

boron nitride semiconducting zigzag swcnt, $b_{cb}$$n_{cn}$$c_{1-cb-cn}$, as a potential candidate for making nanoelectronic devices was examined. in contrast to the previous dft calculations, wherein just one boron and nitrogen doping configuration have been considered, here for the average over all possible configurations, density of states (dos) was calculated in terms of boron and nitrogen ...

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