179 research outputs found
Аргументация как лингвистический элемент в полемике. Виды аргументов
Thermoanaerobacter brockiifermented serine to acetate and ethanol. It oxidized leucine to isovalerate, isoleucine to 2-methylbutyrate, and valine to isobutyrate only in the presence of thiosulfate, or when co-cultured withMethanobacteriumsp. This oxidative deamination was rendered thermodynamically possible by the ability ofT. brockiito reduce thiosulfate to sulfide or the transfer of reducing equivalents to the hydrogenotrophic methanogen. The results suggest thatT. brockiimay be of ecological significance in thermal environments in the turnover of amino acids, especially with thiosulfate or H2-utilizing methanogens are present
Жидкосолевой электроядерный реактор в структуре атомной энергетики Украины
Рассмотрены теоретические основы и рассчитаны параметры подкритического жидкосолевого
электроядерного реактора с ускорителем протонов на энергию порядка 300 МэВ, для которого топливом
является торий, уран, плутоний и трансурановые элементы из отработавшего топлива АЭС.Розглянуто теоретичні основи і розраховані параметри підкритичного рідкосольового електроядерного реактора з
прискорювачем протонів на енергію порядку 300 МеВ, для якого паливом є торій, уран, плутоній і трансуранові
елементи з палива, що відробило АЕС.It is considered theoretical bases and calculated subcritical molten salt electronuclear reactor parameters with proton
accelerator on 300 MeV energy for which thorium, uranium, plutonium and transuranium elements from AES fuel wastes
Effect of n-3 fatty acids on metabolism of apoB100-containing lipoprotein in type 2 diabetic subjects
The effect of long-chain n-3 PUFA on the metabolism of apoB100-containing lipoprotein in diabetic subjects is not fully understood. The objective of the present study was to determine the effect of a daily intake of 1080mg EPA and 720mg DHA for diabetic subjects on the kinetics of apoB100-containing lipoprotein in the fasting state. A kinetic study was undertaken to determine the mechanisms involved in the effects of n-3 fatty acids in terms of a decrease in triacylglycerol level in type 2 diabetic patients. We have studied the effect of fish oils on the metabolism of apoB100 endogenously labelled by [5,5,5-2H3]-leucine in type 2 diabetic patients in the fasting state. The kinetic parameters of apoB100 in VLDL, intermediate-density lipoprotein and LDL were determined by compartmental modelling in five diabetic subjects before and 8 weeks aftern-3 fatty acid treatment. Treatment did not change the plasma cholesterol level (0·801 (sd 0·120)v. 0·793 (sd 0·163) mmol/l) but lowered the plasma triacylglycerol level (1·776 (sd 0·280) v.1·356 (sd 0·595) mmol/l; p<0·05). Treated patients showed a decrease in VLDL apoB100 concentration (0·366 (sd 0·030) v.0·174 (sd 0·036) g/l; v<0·05) related to a decrease in VLDL 1 production (1·49 (sd 0·23) v.0·44 (sd 0·19) mg/kg per h; p<0·05) and an increase in the VLDL conversion rate (0·031 (sd 0·024)v.0·052 (sd 0·040) per h; p<0·05), with no change in fractional catabolic rates. Treatment led to a higher direct production of intermediate-density lipoprotein (0·02 (sd 0·01) v 0·24 (sd 0·12) mg/kg per h; p<0·05). In conclusion, the present study, conducted in the fasting state, showed that supplementation with n-3 fatty acids in type 2 diabetic patients induced beneficial changes in the metabolism of apoB100-containing lipoprotei
Титульная страница и содержание
Several members of the order Thermotogales in the domain Bacteria, viz., Thermotoga neapolitana, Thermotoga maritima, Thermosipho africanus, Fervidobacterium islandicum, and Thermotoga strain SEBR 2665, an isolate from an oil well, reduced thiosulfate to sulfide. This reductive process enhanced cellular yields and growth rates of all the members but was more significant with the two hyperthermophiles T. neapolitana and T. maritima. This is the first report of such an occurrence in this group of thermophilic and hyperthermophilic anaerobic bacteria. The results suggest that thiosulfate reduction is important in the geochemical cycling of sulfur in anaerobic thermal environments such as the slightly acidic and neutral-pH volcanic hot springs and oil reservoirs
Peptide and amino acid oxidation in the presence of thiosulfate by members of the genus Thermoanaerobacter
#Thermoanaerobacter brockii, #T. ethanolicus, #T. thermohydrosulfuricus, #T. finnii, and #Thermoanaerobacter strain SEBR 5268 (an isolate from an oil-producting well) were studied for their ability to oxidize proteinaceous compounds that included gelatin, peptides, and casamino acids. All bacteria tested used peptides and amino acids, but only slightly. However, in the presence of thiosulfate all the #Thermoanaerobacter species showed a substantial improvement in growth and/or the production of acetate, isovalerate, isobutyrate, and sulfide. Propionate was a minor product of peptide or amino acid oxidation. The reduction of thiosulfate during growth on peptides by members of the #Thermoanaerobacter$ species is a trait that closely resembles that of archaeal hyperthermophiles during growth on peptides and amino acids with elemental sulfur as electron acceptor. (Résumé d'auteur
Isolation and characterization of a thermophilic sulfate-reducing bacterium, Desulfotomaculum thermosapovorans sp. nov.
Effect of thiosulphate as electron acceptor on glucose and xylose oxidation by Thermoanaerobacter finnii and Thermoanaerobacter sp. isolated from oil field water
#Thermoanaerobacter finnii fermente le glucose et le xylose en lactate, acétate, H2, CO2 et éthanol qui est le produit majeur du métabolisme. Une autre bactérie du genre #Thermoanaerobacter isolée d'une eau de gisement pétrolier produit des quantités aussi importantes d'éthanol que de lactate à partir de ces sucres. L'oxydation du glucose et du xylose par ces deux micro-organismes est complètement modifiée en présence de thiosulfate puisque, dans ces conditions, l'acétate devient le produit majeur du métabolisme des sucres. Cette modification du métabolisme amène à de meilleurs rendements cellulaires et à un meilleur taux de croissance bactérienne lorsque le thiosulfate est utilisé comme accepteur d'électrons. Une plus grande production d'acétate en présence de thiosulfate indique que les bactéries testées récupèrent plus d'énergie des phosphorylations liées au substrat. Ces modifications observées sur le métabolisme des sucres en présence de thiosulfate nous amènent à tenir compte plus précisément du rôle que peut jouer cet accepteur d'électrons dans l'oxydation de la matière organique dans les sources chaudes riches en sulfate sulfuré ou les eaux de gisements pétroliers. (Résumé d'auteur
Економічні засади покращення інвестиційного клімату України
Розглянуто тенденцію основних прямих та непрямих інвестицій в країну за певний період та виявлено основну низку системних вад економіко - правового середовища, які заважають припливу іноземних інвестицій. Представлені можливі шляхи покращення інвестиційного клімату України.Considered the main trend of direct and indirect investment in the country for a certain period and found a number of major systemic defects economic and legal environment that hinder foreign investment. Courtesy of the main factors that affect the volume of investment, presents possible ways of improving the investment climate in Ukraine
Haloincola saccharolytica subsp. senegalensis subsp. nov., isolated from the sediments of a hypersaline lake, and emended description of Haloincola saccharolytica
Identification and characterization of potential drug interactions in hypertensive patients in a Kenyan tertiary hospital
Background: Hypertensive patients are particularly at risk of drug-drug interactions resulting from the concomitant use of multiple drugs to control their blood pressure. The presence of comorbidities and advancing age are also likely to contribute to the use of many drugs, further increasing this risk. Drug related problems such as drug interactions in the management of hypertension increase morbidity and mortality but there are limited published data to characterize them especially among the African population. Objective: To identify and characterize potential drug interactions among adult hypertensive patients attending Kenyatta National Hospital. Methods: This was a descriptive cross-sectional study done among 313 adult patients between May to July 2016 at Kenyatta National Hospital. Ethical approval was sought from the institutional review board. Data on patient demographics, clinical characteristics and current prescriptions were extracted from patient records into predesigned data collection forms. Potential drug interactions were identified using an online Drug Interactions Checker. Results: There was female predominance at 60.7% and the mean age of the study population was 55.2 years (SD 15.9). The mean number of drugs per prescription was 5.93 (SD 2.24). The prevalence of potential drug interactions was 92.7%. There was an average of 3.5 drug interactions per prescription. Majority (79.2%) of the potential drug interactions were categorized as moderate while major and minor interactions accounted for 4.1% and 16.8%, respectively. The most prevalent interacting drug pair was enalapril and furosemide (15.3 %). The most frequent major interaction found was between enalapril and spironolactone, which is associated with hyperkalaemia. Conclusions: There was a high prevalence of potential drug interactions. Prescribers should be encouraged to be vigilant during the management of hypertensive patients to avoid overt drug interactions which may compromise treatment outcomes and increase the health care costs. Keywords: Drug interactions, hypertension, prescriptions, Keny
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