نتایج جستجو برای: 3 organic acid 02 formaycin
تعداد نتایج: 2571196 فیلتر نتایج به سال:
The manufacturing of advanced explosives containing large amounts of metal powders to improve performance, such as PAX-3, have proven difficult to transition into production. Current manufacturing processes have had low yield which results in a high cost per unit and questionable product uniformity. Over the past year the Twin Screw Extruder (TSE) Team has been investigating the use of a TSE ma...
Background and Objectives: The development a low-cost and high efficiency water treatment technology to decolorize the organic dye effluents is desirable due to overwhelming discharge of organic synthetic dyes into the natural water cycle during the dying process. In this study, the decolorization of Acid Black 26, as the model organic contaminant, was investigated using immobilized nano-sized ...
The objective of this study was to elaborate whole juice from the varieties BRS ‘Russas 01’ and 02’ orange tree ‘de Russas’, with organic certification analyse its quality characteristics. Twenty fruits each variety were used prepare juice, physicochemical analysis pH, soluble solids, titratable acidity solids/titratable ratio (Ratio). content c...
The heterogeneous uptake and reactivity of formic acid (HCOOH), a common gas-phase organic acid found in the environment, on calcium carbonate (CaCO(3)) particles have been investigated using a Knudsen cell reactor, Fourier transform infrared (FTIR) spectroscopy and scanning electron microscopy (SEM). FTIR measurements show that the adsorption of formic acid on the surface of calcium carbonate ...
We studied the humic-acid fraction isolated from a Spanish leonardite coal (Torrelapaja, Cretaceous basin belonging to the Utrillas facies) using a suite of chromatographic and spectroscopic techniques to characterize the structure of the carbon skeleton and the nature of the sulfur-containing compounds. In particular, analytical pyrolysis coupled to gas chromatography-mass spectrometry was use...
SrNcE Warburg & Christian [1932] isolated the first flavoprotein from yeast (flavinphosphoric acid as its prosthetic group) and Banga & Szent-Gyorgyi [1932] observed the presence of flavin in muscle tissue, there has been much speculation on the possible role of a flavoprotein in the mechanism of oxidations in animal tissues. As yet, however, there is no information on the state and function of...
Demand for organic milk is partially driven by consumer perceptions that it is more nutritious. However, there is still considerable uncertainty over whether the use of organic production standards affects milk quality. Here we report results of meta-analyses based on 170 published studies comparing the nutrient content of organic and conventional bovine milk. There were no significant differen...
background: organic acids refer to a family of compounds that are intermediates in a variety of metabolic pathways. many organic acids are present in urine from clinically normal individuals. elevated levels of urine organic acids cause to the organic acidurias, disorders in which some metabolic pathways in organic acid metabolism are blocked. the present work identified major and minor urinary...
Positive-ion thermospray liquid chromatography-mass spectrometry (TSP-LC-MS) is used to detect organic acids via the direct injection of untreated urine from newborns and infants. Two methods are reported for the separation of organic acids. The separation of urinary organic acids is effected in either an acidic, pH 2.5 sulfuric acid, or a non-acidic, 0.05 M ammonium acetate, pH 6.8, mobile pha...
background: outbreak and spread of bacterial infections resulted in increasing use of antibiotics which subsequently leaded to bacterial resistance to conventional antibiotics. objectives: to evaluate the effects of organic acids (selko-ph®), probiotic (primalac®) and echinacea purpurea (ep) alcoholic extract on the immune system of the broiler chickens, a completely randomized design experimen...
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