نتایج جستجو برای: bromothymol blue

تعداد نتایج: 71319  

Journal: :iranian journal of science and technology (sciences) 2007
a. abbaspour

a simple, rapid and sensitive spectrophotometric method has been proposed for the determinationof vanadium (iv). the method is based on the catalytic effect of v (iv) on the oxidation of alkali blue bypotassium bromate at ph 4. the rate of decrease in the absorbance of alkali blue (at 572 nm) wasproportional to the concentration of v (iv) in the range of 100-6000 ng ml-1. the detection limit wa...

Journal: :journal of herbal drugs (an international journal on medicinal herbs) 2010
samaneh rahimi mahmood zokaee neda soltani

background & aim: in this study, is done during one-year research on blue–green and green algae for antimicrobial activity in mashhad suburb. aqueous, ether, and methanol extracts from 44 species blue – green algae and green algae were examined for antimicrobial properties against four bacteria (tow positive gram bacteria and tow negative gram bacteria) and tow fungous. material & meth...

Journal: :journal of physical & theoretical chemistry 2006
masoumeh tabatabaee

a catalytic-kinetic method for the determination of selenium is proposed. alizarin navy blue is reduced by sodium sulfide to from a colorless product. the reaction is accelerated by trace amounts of se (iv), and can be followed by measuring the decrease in absorbance of the dye at 620nm and 30 °c by the fixed time method. selenium can be determined in the range of 0.004 — 0.12 1.1g.m1-1 . ...

Journal: :Circulation: Cardiovascular Quality and Outcomes 2017

Journal: :modares journal of medical sciences: pathobiology 2015
farideh eivazkhani bita ebrahimi behpour usefi rouhollah fathi hamid reza sameni

objective: different cryoprotectants are used for cryopreservation of ovarian tissue in patients at risk of infertility. ethylene glycol (eg), dimethyl sulfoxide (dmso) and propanediol (proh) have been chosen as the basic permeable cryoprotectants due to their decreased glass-formation characteristics compared to other cryoprotectants. in the present study, the effects of two different vitrific...

Journal: :international journal of nano dimension 0
g. chandra das department of chemistry, gauhati university, guwahati 781014, assam, india. d. bhuyan department of chemistry, gauhati university, guwahati 781014, assam, india. n. sen sarma physical sciences division, institute of advanced study in science and technology, guwahati-781035, assam, india. o. kumar medhi department of chemistry, gauhati university, guwahati 781014, assam, india.

a new approach for the synthesis of prussian blue nanoparticles using the cationic surfactant cetyl pyridinium chloride (cpc) as capping agent has been developed in the present work. powder x-ray diffraction, transmission electron microscopy, uv–vis absorption spectra, and ir spectroscopy were employed to characterize the product. the tem image showed that the prussian blue nanoparticles with d...

Journal: :modares journal of medical sciences: pathobiology 2012
ali ebrahiminia manijhe mokhtari-dizaji tayebeh toliyat

objective: in order to overcome the limitation of systemic administration of methylene blue, this study investigated the encapsulation of methylene blue in polymeric liposomes and drug release following sonication. methods: we encapsulated methylene blue into nanoliposomes. the dynamic light scattering (dls) method was used to measure the size distribution of the liposomes. after loading methyl...

2002
Asti Bhatt Brandon Boldt Scott Skousen Daniel P. Stormont

This paper describes the Utah State University (USU) entry in the 2002 robotic Urban Search and Rescue (USAR) competition, hosted by the American Association for Artificial Intelligence (AAAI). More importantly, it also describes the problems the team encountered in preparing for this year’s competition, the lessons learned, and plans for the 2003 USAR competition. Description of the 2002 Entry...

Journal: :Journal of neuroendocrinology 2002
Gareth Leng

However brilliant a scientist is, however incisive their mind and however elegant their experiments, they must be able to communicate effectively. The ability to write fluently, to inspire an audience in a lecture hall, and to listen carefully and argue cogently face-to-face with a sceptic are all important. Maybe some people believe that it’s only important to impress the journal referees and ...

Journal: :Journal of Craniofacial Surgery 2009

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