نتایج جستجو برای: chemical solvents
تعداد نتایج: 415983 فیلتر نتایج به سال:
We have established the detailed phase diagram of prototypical deep eutectic solvent ethaline (ethylene glycol / choline chloride 2:1) as a function hydration level, in bulk state and confined nanochannels mesostructured porous silica matrices MCM-41 SBA-15, with pore radii RP = 1.8 nm 4.15 nm. For neat moderately hydrated DESs, freezing was avoided glassforming solutions were formed all cases....
Objective: It has been greatly attempted to learn more about chemical information on finger prints using new vehicular technique use for the detection of a variety of substances, including narcotic drugs and medicines, as well using nano particles bound to specific antibodies. Over the last few years, the sensitive techniques of gas chromatography and mass spectrometry have been found for the d...
oxidative addition reactions of 1,4-diiodo-butane and 1,3-diiodo-propane with [ptme2(ph2phen)]; in which ph2phen=4,7-diphenyl-1,10-phenanthroline, were studied in different solvents such as acetone and benzene.oxidative addition reaction of [pt me2(ph2phen)] with i(ch2)4i and i(ch2)3i produced the [pt me2i(ch2)4(ph2phen)i] (1a) and [pt me2i(ch2)3(ph2phen)i] (1b).all the platinum (iv) products w...
Introduction: With increasing resistance to overuse of synthetic chemical antibiotics, it is necessary to find alternative drugs that have both antibacterial and minimal side effects. The aim of this research is the effect of different types of solvents on the extraction of effective antibacterial agents of the plant and the identification of chemical compounds of Arenaria hispanica essential o...
Occupational exposure to hydrocarbon solvents has been found to be associated with an increased risk of exocrine pancreatic cancer (EPC), the human tumor with the highest prevalence of K-ras mutations. Ras genes are critical DNA targets for chemical carcinogens. We analysed the relationship between past occupational exposure to hydrocarbon solvents and mutations in codon 12 of the K-ras gene in...
Chemical transformations frequently involve time-consuming processes that can occasionally be achivied by employing different techniques and media. New methods allow us to explore new reaction profiles while saving time solvents. As a result, solvent classes for processing chemicals have been introduced. Supercritical fluids, fluorous solvents, solvents made from biomass, in addition ionic liqu...
Background: Critical risks are one of the most important problems in industries, which have high costs for the industry. This study aimed to assess critical safety and health risks through job safety analysis and analytic hierarchy process in industrial printing. Materials and Methods: The present study was conducted as a descriptive and analytical in one of the printing industries in Iran, in...
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