نتایج جستجو برای: acidic

تعداد نتایج: 34500  

زنجانچی, محمد علی , وقارلاهیجانی, غلامرضا,

Dealumination is a common phenomena occures during acid leaching or acid rctluxing of mordenite to prepare acidic zeolite. But there is no comprehensive repo rt on dealumination which can take place in mordenitcs that are made acidic by ion.exchnge with ammonium sa lt so lution followed by ca lcination. OUf UV Diffuse Reflectance Spectrosco~y on acidic mordenite prepared by ion ~exchangc ...

A. Saffar Shargh E. Alizadeh E. Zakipour Rahimabadi, F. Gheybi

Isoelectric solubilization /precipitation (ISP) process was used to isolate protein from muscles of Prussian carp, Carassius gibelio (Bloch, 1782). Fish protein and lipid were recovered from whole gutted Prussian carp using acidic and basic isoelectric solubilization/precipitation followed by assaying amino acid and fatty acid profile. Essential amino acids content in acidic and basic pH treatm...

  Alzheimer’s disease (AD) is a neurodegenerative disease that was characterized with deposit of beta amyloid (Aβ) aggregate in senile plaque. Oxidative damage to neurons and loss of cholinergic neurons in forebrain region are observed in this disease. Melissa officinalis is a medicinal plant from Lamiaceae family, used traditionally in the treatment of cognitive disorders. It has cholinomimeti...

Journal: :Soil systems 2021

Reductions in acidic deposition rates through legislative actions North America and Europe have stemmed further environmental degradation shifted the focus to potential recovery [...]

Journal: :journal of dentistry, tehran university of medical sciences 0
m omid khoda assistant professor, dental research center of mashhad university of medical sciences, department of orthodontics, school of dentistry, mashhad, iran. f heravi h shafaee h mollahassani

it is proved that acidic soft drinks that are commonly used, have an adverse effect on dental structures, and may deteriorate oral heath of our patients and orthodontic appliances. the aim of this study was to compare the effect of yoghurt drink with other soft drinks on the shear bond strength of orthodontic brackets.seventy-five first premolar teeth extracted for orthodontic purposes were sel...

Journal: :iranian journal of catalysis 2013
eshagh rezaee nezhad sami sajjadifar sara miri saaid karimian zahra abbasi

in this research, we have developed cheap recyclable and task-specific acidic ionic liquids (ails) 1-hydrogen-3-methylimidazolium hydrogen sulfate [hmim]hso4, 1-hydrogen-3-methylimidazolium chloride [hmim]cl, 2-pyrrolidonium hydrogensulfate [hnhp]hso4 and applied them in acid catalyzed synthesis of quinoxaline derivatives from 1,2-phenylendiamines and 1,2-dicarbonyl compounds. the products coul...

Journal: :applied biotechnology reports 0
ali mohammad latifi applied biotechnology research center, baqiyatallah university of medical sciences, tehran, iran ehsan sadegh nejad hamid babavalian

the alginate was extracted with six different methods from iran south seacoast algae, sargassum sp, and the percentage yield of alginate was determined. we divided our methods to two groups including acidic extraction and non-acidic. in acidic methods, hcl and h 2 so 4 were used as a detergent in extraction process and cacl 2 was exerted in non-acidic treatments. all treatments compared with ea...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2011
farajollah mohanazadeh sakineh rahimi

n,n-diethylethanaminium-2-(sulfooxy) ethyl sulfate was synthesized and used as  an efficient, green, and recyclable catalyst and solvent for the nitration of aromatic compounds by nitric acid at 80oc

Journal: :محیط زیست طبیعی 0
فرزانه محمودیان کارشناس ارشد مهندسی محیط زیست، دانشگاه تهران، ایران امیرحسین حمیدیان استادیار گروه محیط زیست، دانشگاه تهران، ایران نعمت ا... خراسانی استاد گروه محیط زیست، دانشگاه تهران، ایران پوریا حق پناه کارشناس ارشد محیط زیست، سازمان حفاظت از محیط زیست، ایران

in this paper the risk of heavy metals discharged from the acidic sludge leachate into groundwater in a landfill located in fajr industrial area )garmsar( has been assessed using iwem software. acidic sludge as one of the industrial hazardous wastes is produced during purification of used oil with mienken )acidic( method. the concentrations of heavy metals )cd, ni, co, pb, zn, mn, cu( in the ac...

Journal: :پژوهش های علوم و صنایع غذایی ایران 0
s. s. amiri aghdaei m. aelami s. m. jafari a. s. mahoonak

in the present study, physicochemical, rheological and textural properties of beta-glucan (bg) extracted from four iranian hull-less barley lines (ehds4, ehds18, aleli, cam-b) were investigated. two different methods namely, hot water (hw) and acidic (a) were used for extraction of beta-glucan. results showed that the highest amount of beta-glucan belonged to ehds4.the purity of hw extracted be...

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