نتایج جستجو برای: ferric saccharide

تعداد نتایج: 15255  

Journal: :Applied and environmental microbiology 1990
D J O'Sullivan J Morris F O'Gara

Five cosmid clones with insert sizes averaging 22.6 kilobases (kb) were isolated after complementation of 22 Tn5-induced Sid- mutants of Pseudomonas sp. strain M114. One of these plasmids (pMS639) was also shown to encode ferric-siderophore receptor and dissociation functions. The receptor gene was located on this plasmid since introduction of the plasmid into three wild-type fluorescent pseudo...

Journal: :The Journal of Physical Chemistry 1907

Introduction: Controlling parenchymal hemorrhage, especially in liver, is still one of the challenges surgeons face with when they try to save the patients’ lives despite improvements in surgical procedures. There is a research contest between the researchers in this field to introduce more effective methods. This study aimed to compare the hemostatic effect of ferric sulfate and ferric chlo...

Journal: :The Biochemical journal 1998
J Partridge D F Wallace K B Raja J S Dooley A P Walker

The enzyme ferric reductase catalyses the reduction of Fe(III) as a prerequisite to its transportation across the cell membrane. Duodenal mucosal biopsies from iron overloaded patients with genetic haemochromatosis (GH) have increased ferric reductase activity and iron absorption compared with controls, yet the GH mucosa is iron deficient. A similar GH-related iron deficiency is also seen in ma...

Journal: :Reactions Weekly 2021

Journal: :Chemical communications 2010
Gaku Fukuhara Yoshihisa Inoue

A newly synthesized chromophore-modified curdlan functions as a saccharide chemosensor in aqueous solution, enabling us to discriminate tetrasaccharide acarbose from 24 mono-, di-, tri-, and tetrasaccharides.

2003
DEREK R. LOVLEY ELIZABETH J. P. PHILLIPS

The potential for ferric iron reduction with fermentable substrates, fermentation products, and complex organic matter as electron donors was investigated with sediments from freshwater and brackish water sites in the Potomac River Estuary. In enrichments with glucose and hematite, iron reduction was a minor pathway for electron flow, and fermentation products accumulated. The substitution of a...

Journal: :The Journal of Physical Chemistry 1907

2010
Martha Williams Schaefer

Samples of dark to black fayalite from ten localities around the world were examined by 57Fe Mossbauer spectroscopy to see if any contained significant proportions of ferric iron. Of these ten samples, four, including a sample of ferrifayalite from Qianan County, China, previously known to contain ferric iron, were found to contain large amounts of this cation. Ferric/ferrous ratios of these sa...

Journal: :تحقیقات نظام سلامت 0
حسن ایزانلو استادیار، مرکز تحقیقات آلاینده های محیطی و گروه مهندسی بهداشت محیط، دانشگاه علوم پزشکی قم، قم، ایران. طیبه رحیمی کارشناس مهندسی بهداشت محیط، مرکز تحقیقات آلاینده های محیطی و گروه مهندسی بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی قم، قم، ایران. محمدحسن محمودیان مربی، گروه مهندسی بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی قم، قم، ایران. محمد خزائی کارشناس ارشد مهندسی بهداشت محیط، گروه مهندسی بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی قم، قم، ایران. زینب یاوری کارشناس مهندسی بهداشت محیط، مرکز تحقیقات آلاینده های محیطی و گروه مهندسی بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی قم، قم، ایران. علیرضا عسگری مربی، گروه مهندسی بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی شاهرود، شاهرود، ایران. نجمه واعظی

background: one of the major sources of drinking water contamination is nitrate. nitrate concentrations of more than the standard levels (45mgl -1 based on nitrate) could cause methemoglobinemia in children. the aim of this study is to investigate the nitrate adsorption on granular ferric hydroxide (gfh). also in this study, the effect of factors such as initial concentration of nitrate, contac...

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