نتایج جستجو برای: Ethanol-water media
تعداد نتایج: 913959 فیلتر نتایج به سال:
the effect of ethanol-water media on the synthesis of ag/tio2 nanocomposite was investigated with 0.05, 0.1 and 0.5 (wt.%) of ag content. ethanol was used as hole-scavenger enhancing the photodecomposition of ag+ ions under illumination of near-uv light. the nanocomposites were further calcined to 300˚c and 400˚c under controlled atmosphere. the synthesized nanocomposites were tested for photoc...
This study investigated the effect of soy protein hydrolysates (SPH) prepared by varying subcritical media on the physicochemical properties of pork patties. For resource of SPH, two different soybean species (Glycine max Merr.) of Daewonkong (DWK) and Saedanbaek (SDB) were selected. SPH was prepared by subcritical processing at 190℃ and 25 MPa under three different of media (water, 20% ethanol...
It is well known that the acetic acid bacteria can rapidly oxidize ethanol to acetic acid. But whether ethanol can serve as a source of carbon and energy for these bacteria has not been clearly established. Pasteur (1868) noted that Mycoderma aceti which is undoubtedly Acetobacter aceti (Frateur, 1950) can grow well in ethanol media only if acetic acid is also present. Addition of one or two pe...
The accuracy and consistency of the delivery of ethanol to cultured cells is important to determine effects on morphologic, biochemical and physiologic alterations. Open and closed chamber systems were evaluated to determine cytotoxic vs sublethal, potentially teratogenic effects on neonatal rat cardiac myocytes. The open system employed a variety of cell culture vessels. Cardiac cells were exp...
Odor thresholds of volatile compounds in fresh tomato (Lycopersicon esculentum Mill.) were estimated and odor units calculated to determine whether the medium of evaluation affects aroma perception. The ‘ascending method of limits’ was used to determine odor thresholds of cis-3-hexenal, hexanal, trans-2-hexenal, hexanol, cis-3-hexenol, 2-isobutylthiazole, 6-methyl-5-hepten-2-one, geranylacetone...
Stable monodispersed amorphous calcium carbonate (ACC) nanoparticles can be synthesized in ethanol media by a facile method, and crystallization of ACC is kinetically controlled, resulting in the formation of three polymorphs in a mixed solvent of ethanol-water at different pH values.
Biological specimens contain up to 80% or more water which must be substituted in fixed cells (with the exception of special cryo-techniques) by some kind of embedding media to allow mechanical support for the sectioning process. Usually, embedding media cannot directly replace water, and fixation is followed by a sequence of dehydrating solutions from which the last must be miscible with the e...
OBJECTIVE The aim of this study was to determine whether potentized homeopathic drugs and their diluent media differ from each other with respect to their Fourier transform infrared (FTIR) spectra. DESIGN FTIR spectra of Nux vomica 30C, Lycopodium 30C, Santonin 30C, Cina 30C, Cina 206C, Cina 1006C, and their diluent media 90% ethanol and Ethanol 30C were obtained in the wave number range of 2...
High pressure behaviour of Na-hectorite in water media shows surprisingly strong similarities to graphite oxide compression in liquid media considering rather different chemical composition and structure of these two types of materials. Crystalline swelling with pressure induced insertion of additional solvent layer (not correlated with pressure point of liquid media solidification) was observe...
core-shell nanostructures are emerging as more important materials than alloy nanostructures and have much more interesting potential applications in various fields. in this work, we demonstrated the fast and facile synthesis of core-shell nanoparticles consisting of pt thin layer as the shell and ni nanoparticles as the cores. the described method herein is suitable for large-scale and low-cos...
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