نتایج جستجو برای: solvents

تعداد نتایج: 45213  

Journal: :The journal of physical chemistry. B 2009
Kristi L O'Neal Stephen G Weber

There are only a few studies of noncovalent association in fluorous solvents and even fewer that are quantitative. A full understanding, particularly of stoichiometry and binding strength of noncovalent interactions in fluorous solvents could be very useful in improved molecular-receptor-based extractions, advancements in sensor technologies, crystal engineering, and supramolecular chemistry. T...

2015
Sofia Ahmed Nafeesa Mustaan Muhammad Ali Sheraz Syeda Ayesha Ahmed un Nabi Iqbal Ahmad

The present study has been carried out to validate a UV spectrometric method for the assay of tolfenamic acid (TA) in organic solvents. TA is insoluble in water; therefore, a total of thirteen commonly used organic solvents have been selected in which the drug is soluble. Fresh stock solutions of TA in each solvent in a concentration of 1 × 10(-4 )M (2.62 mg%) were prepared for the assay. The m...

2017
Matthieu Carton Christine Barul Gwenn Menvielle Diane Cyr Marie Sanchez Corinne Pilorget Brigitte Trétarre Isabelle Stücker Danièle Luce

OBJECTIVE Our objective was to investigate the association between head and neck cancer and occupational exposure to chlorinated, oxygenated and petroleum solvents in women. METHODS Investigation of occupational and environmental CAuses of REspiratory cancers (ICARE), a French population-based case-control study, included 296 squamous cell carcinomas of the head and neck (HNSCC) in women and ...

2002
Brian Knutson Elbert Sorrell Kristy Hammons

Knutson (Last Name) Brian (First Name) D. (Middle Initial) The Use of a Supercritical Carbon Dioxide-Based Solvent as a Cost Effective and (Title) Environmentally Sound Alternative to Current Photoresist Stripping Solvents M.S. in Risk Control Elbert Sorrell, Ph.D. 5/2002 25 (Graduate Major) (Research Advisor) (Month/Year) (Pages) American Psychological Association Style Manual (Name of Style M...

2012
Shanshan Chang Françoise Quignard Francesco Di Renzo

The dimensional variations of green wood samples induced by organic solvents have been studied. The solvents used (ethanol, isopropanol, acetone, and acetonitrile) covered a wide range of polarity and were studied pure and in aqueous solutions over a wide range of concentrations. Samples of normal and tension wood of poplar were used in order to minimize the effect of hydrophobic extractives on...

Journal: :Occupational and environmental medicine 2013
Fabienne Pelé Gina Muckle Nathalie Costet Ronan Garlantézec Christine Monfort Luc Multigner Florence Rouget Sylvaine Cordier

OBJECTIVES Many women who work during pregnancy are occupationally exposed to toxicants. The developing central nervous system is highly vulnerable to neurotoxicants such as solvents. Although the neurotoxicity of solvents to adults is well established, very few studies have examined their effects on children's behaviour following prenatal exposure. METHODS Women from the Perturbateurs endocr...

Journal: :Nanoscale 2015
Alexey Klechikov Junchun Yu Diana Thomas Tiva Sharifi Alexandr V Talyzin

The change of distance between individual graphene oxide sheets due to swelling is the key parameter to explain and predict permeation of multilayered graphene oxide (GO) membranes by various solvents and solutions. In situ synchrotron X-ray diffraction study shows that swelling properties of GO membranes are distinctly different compared to precursor graphite oxide powder samples. Intercalatio...

Journal: :Molecules 2012
Vibha Bansal Yamixa Delgado Marc Legault Gabriel Barletta

The potential of enzyme catalysis in organic solvents for synthetic applications has been overshadowed by the fact that their catalytic properties are affected by organic solvents. In addition, it has recently been shown that an enzyme's initial activity diminishes considerably after prolonged exposure to organic media. Studies geared towards understanding this last drawback have yielded unclea...

Journal: :Occupational and Environmental Medicine 1959

Journal: :Journal of Chemical Education 1940

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