This article aims to examine the associations between the use of acid-suppressive drugs and occurrence of community-acquired pneumonia. Reduction of gastric acid secretion by acid-suppressive therapy allows pathogen colonization from the upper gastrointestinal tract. The bacteria and viruses in the contaminated stomach have been identified as species from the oral...
The focal point of this fact-sheet is Prussic acid poisoning which can occur when livestock are pastured on sorghum-type plants, including grain sorghum, forage sorghum, Sudan grass, sorghumsudangrass crosses, Johnsongrass, sweet sorghums, and other sorghum-type plants. Prussic acid poisoning also known as cyanogenesis is caused by hydrocyanic acid, one of...
A five-channel taste module based on ion-selective electrodes ISE with lipid-polymer membranes was constructed. Five different kinds of lipids or their derivatives were used in PVC membranes as substances transforming taste information into electric signals: benzylcetyldimethylammonium chloride monohydrate, hexadecylamine, elaidic acid, 1-dodecanol and oleic acid. The electrode potential in response...
This paper describes the effects of GlcNAc 2-epimerase expression on sialic acid production in cells. A key tool the paper developed for this study is a cell-permeable, small molecule inhibitor of GlcNAc 2-epimerase designed based on mechanistic principles. The paper results indicate that, unlike UDPGlcNAc 2-epimerase, which promotes biosynthesis of...
St. James Oil Corp. used a combination hydrochloric / phosphonic acid stimulation treatment in four wells in the Los Angeles Downtown oil field to improve well performance and inhibit calcium carbonate scaling. In the four treated wells, combined production response has averaged about 122 bopd, a 220% increase over production...
This paper reveals about Sphingosine-1-phosphate and lysophosphatidic acid LPA are ligands for two related families of G protein-coupled receptors, the S1P and LPA receptors, respectively. The lysophospholipid ligands of these receptors are structurally similar; however recognition of these lipids by these receptors is highly selective. A single residue present within...
The paper provides information on the characteristics of batteries, particularly Valve Regulated Lead Acid, environmental aspects and practical system configurations available for system architects designed to provide recharge control in battery backed DC power solutions. Valve Regulated Lead Acid battery VRLA blocks differ from Flooded cells (e.g.: Plante type) in...
The results of the development of the integrated membrane technology and the unit based on it for hydrofluoric acid recovery from armored glass production concentrated washing waters, containing besides fluoride-ions, some impurities of hydrosilicofluoric acid, have been considered. Such effluents are produced at the stage of glass production after pickling...
PCS Phosphate Co., Inc. is a chemical producing and mining company based in North Carolina. The processing of phosphate ore to produce phosphoric acid requires large amounts of sulfuric acid and steam. In addition to being used in the process, steam is used to generate electrical power, which is then...
In this paper a physiologically based pharmacokinetic PBPK model is discussed that provides a comprehensive description of the kinetics of trichloroethylene TCE and its metabolites, trichloroethanol TCOH, trichloroacetic acid TCA, and dichloroacetic acid DCA, in the mouse, rat, and human for both oral and inhalation exposure. The model includes descriptions...
Alginite, mined at Pula is used as a model material. It has been originated from biomass of fossil algae during several millions of years in volcanic craters. Its organic material content is about 5-50%. It was fractionated by alkaline extraction. The solute pH was adjusted to 7, 5 and 2...
Following an increased interest in the last decade to employing peracetic acid PAA as an alternative disinfectant to chlorination, a study was started to investigate the technical, economic and chemical suitability of PAA for disinfecting municipal wastewater to be reused in agriculture. Laboratory and pilot-scale (10 m3/h) experiments of disinfecting...
Broilers respond adversely to a hot environment by decreasing feed intake and rate of body weight gain while the extent of fat deposition increases. Response of broilers reared under summer conditions to feeds having essential amino acid EAA levels approximating 110% of their expected requirement was examined with both sexes....
Isobutylene off-gas amounts liberated during the methanesulfonic acid-catalyzed deprotection of N-BOC-pyrrolidine in THF, methanol, ethanol, 2-propanol, toluene, and dichloromethane were measured using on-line gas-phase mass spectroscopy. In alcohol solvents, the corresponding alkyl tert-butyl ethers are formed as byproducts of the reaction as expected. In dichloromethane and toluene, oligomers of isobutylene...
This paper presents experimental densities for the system acetone + propionic acid + water at atmospheric pressure from (283.15 to 323.15) K. A vibrating-tube densimeter provides density measurements over the entire composition range. The paper further presents a brief calculation of the excess volumes of the mixture and represents them...
This white paper finds and deals with the extension of the N-acyl chain to six, seven, or eight carbon atoms dramatically reduced utilization by the biosynthetic machinery. Likewise, branching from the linear chain reduced metabolic conversion. Quantization of metabolic intermediates suggested that cellular metabolism is limited by the phosphorylation of...
This white paper refers to ''Sialic acid engineering'' that describes to the strategy where cell surface carbohydrates are modified by the biosynthetic incorporation of metabolic intermediates, such as non-natural N-acetylmannosamine ManNAc analogues, into cellular glycoconjugates. This paper discusses the metabolic flux of these ''second-generation'' compounds into a cell, and, subsequently,...
Polypyrrole-polystyrene sulfonic acid (PPy-PSSA) composite films have been electro synthesized in an aqueous solution of PSSA. The electro-active films exhibit cation exchange during the redox process. Infrared, Raman and energy dispersive spectroscopic results demonstrated that the polyanion of PSS- is co-deposited into the PPy matrix and couldn't be stripped from...
This white paper discusses the results that provide fundamental insights into the role of sialic acid metabolism in apoptosis by demonstrating that ManNAc analogs can modulate apoptosis both indirectly via hydroxyl-group effects and directly through N-acyl-group effects. This work explore the structure-activity relationship of ManNAc analogs on cell viability and...
Organic acids are increasingly used for various industrial applications. Bipolar membrane electrodialysis EDBM can be used to achieve the conversion of the acid salt into its acidic form. Its introduction in replacement of precipitation can significantly lower the environmental impact of the process. This paper is focused on the modeling...
