Results 31 to 40 of about 994,111 (383)
Oilseeds and fats, crops and lipids, 2021 Solvents have a bad reputation in the cosmetics world, at least as regards the production of specialty vegetable oils used in this market. In order to do without these solvents, the cosmetics industry tends to use only mechanically produced oils. However,
Carré Patrick
doaj +1 more source
Solvation Free Energies in Subsystem Density Functional Theory [PDF]
, 2021 For many chemical processes the accurate description of solvent effects are vitally important. Here, we describe a hybrid ansatz for the explicit quantum mechanical description of solute-solvent and solvent-solvent interactions based on subsystem density functional theory and continuum solvation schemes.
arxiv +1 more source
A Simple, Quick, and Precise Procedure for the Determination of Water in Organic Solvents [PDF]
, 1990 A procedure for the UV/VIS-spectroscopic determination of water by the use of a solvatochromic pyridiniumphenolate betaine is given. The water content of organic solvents is calculated by a two parameter equation from λmax of the dye.
Dimroth K. +9 more
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Solvent-related chronic toxic encephalopathy as a target in the worker's mental health research
Anais da Academia Brasileira de Ciências, 2004 The article is aimed at discussing the theoretical grounds which support the diagnosis of solvent-related chronic encephalopathy in the field of the worker's mental health, having it as a target in this area.
Andréia Ramos +2 more
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The structure of fluids with impurities [PDF]
Z. Phys. Chem. 226, 807 (2012), 2012 The influence of dilute impurities on the structure of a fluid solvent is investigated theoretically. General arguments, which do not rely on particular models, are used to derive an extension of the Ornstein-Zernike form for the solvent structure factor at small scattering vectors. It is shown that dilute impurities can influence the solvent structure
arxiv +1 more source
Direct iminization of PEEK [PDF]
, 2011 Semi-crystalline poly(ether ketone)s are important high-temperature engineering thermoplastics, but are difficult to characterize at the molecular level because of their insolubility in conventional organic solvents.
Attwood T. E. +17 more
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Noise and Health, 2013 Hearing loss affects many workers including those in the military and may be caused by noise, medications, and chemicals. Exposures to some chemicals may lead to an increase in the incidence of hearing loss when combined with hazardous noise.
Hayley Hughes, Katherine L Hunting
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ECOLOGICAL CLEANING SYSTEMS FOR OLD ICONS PAINTED IN TEMPERA [PDF]
Chemistry Journal of Moldova: General, Industrial and Ecological Chemistry, 2014 Old icons, especially those involved in liturgical rituals are affected in time by external agents factors (temperature, humidity, light, pollution, microbiological attack, abrasion etc.), resulting changes of the appearance and of the structural ...
Silvea Pruteanu +3 more
doaj
Improving the Vanillin-Sulphuric Acid Method for Quantifying Total Saponins
Technologies, 2018 The colorimetric assay used for saponin quantification in plant extracts is subject to interference by common solvents used to extract the saponins from plant materials. Therefore, the degree of interference of ten common solvents was investigated.
Anh V. Le +3 more
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Interfacial Phenomena of Solvent-diluted Block Copolymers [PDF]
Macromolecules 47, 460 (2014), 2013 A phenomenological mean-field theory is used to investigate the properties of solvent-diluted di-block copolymers (BCP), in which the two BCP components (A and B) form a variety of phases that are diluted by a solvent (S). Using this approach, we model mixtures of di-block copolymers and a solvent and obtained the corresponding critical behavior.
arxiv +1 more source