نتایج جستجو برای: chelex 100
تعداد نتایج: 415337 فیلتر نتایج به سال:
A one-step preconcentration method using two columns in series was used to partition trace metals in natural waters into several operationally defined fractions. The water passed through a Chelex-100 cation exchange column to collect dissolved labile trace metals and then through an AG MP-1 macroporous resin column to collect trace metals complexed with natural organic matter. A third fraction ...
Absence of gradients and Nernstian equilibrium stripping (AGNES) is an emerging electroanalytical technique designed to measure free metal ion concentration. The practical implementation of AGNES requires a critical selection of the deposition time, which can be drastically reduced if the contribution of the complexes is properly taken into account. The resin titration (RT) is a competition met...
S100 proteins were first discovered in 1965 by Moore as a major protein fraction (0.6% of total soluble protein) isolated from bovine brain (Moore 1965). The protein was given the name S100 due to its high solubility in saturated ammonium sulfate. Later experiments showed the S100 protein fraction constituted two different dimeric species comprised of two b protomers (S100B) or an a, b heterodi...
زمینه و هدف : هدف از این مطالعه بررسی ارتباط بین لیپیدها و آپولیپوپروتئینb-100 خون مادر و خون بند ناف و تاثیر عوامل فوق بر شاخص های آنتروپومتریک نوزاد می باشد. مواد و روش ها: پژوهش حاضر یک مطالعه توصیفی – تحلیلی و مقطعی است،که بر روی 75 مادر باردار که در بخش زایمان بیمارستان نجمیه تهران زایمان نمودند و نوزادان آنها انجام گردید. حین زایمان 5 سی سی خون از ورید مادر و بلافاصله بعد از تولد نوزاد، ...
Ceruloplasmin is a plasma protein that carries most of the copper found in the blood. Although its elevation after inflammation and trauma has led to its classification as an acute phase protein, its physiological role is uncertain. A frequently reported activity of ceruloplasmin is its ability to suppress oxidation of lipids. In light of the intense recent interest in the oxidation of plasma L...
Previous studies have associated angiotensin-converting enzyme (ACE) D allele with variability in the skeletal muscle baseline strength, though conclusions have been inconsistent across investigations. The purpose of this study was to examine the possible association between ACE genotype and skeletal muscle baseline strength in elite male and female athletes involved in different event expertis...
The ubiquity, high diversity and often-cryptic manifestations of fungi and oomycetes frequently necessitate molecular tools for detecting and identifying them in the environment. In applications including DNA barcoding, pathogen detection from plant samples, and genotyping for population genetics and epidemiology, rapid and dependable DNA extraction methods scalable from one to hundreds of samp...
A flow system for the spectrophotometric determination of lead in natural and waste waters is proposed. The determination is based on the colorimetric reaction between malachite green and iodide, followed by the formation of a ternary complex between those reagents and lead cations. The developed flow system includes a lead pre-concentration step in a column packed with a cationic resin (Chelex...
Northern pike, Esox Lucius , is one of the most important species for recreational fisheries in Sweden and as a top-predator; it holds an role food web. Despite its ecological socioeconomic significance, pike largely neglected current monitoring programs because seldom caught by conventional methods. As result, there not sufficient data management authorities to employ biologically justified st...
Leptospirosis is an endemic disease caused by Leptospira spp., a bacterium that affects animals and humans. In recent years, the number of reports leptospirosis in wild has increased, which highlights need to study infectious agents these animals. this study, duplex PCR for detection leptospiral DNA was performed on 50 kidney samples from bats, MAT (Microscopic Agglutination Test) serological a...
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