BACKGROUND Staphylococcus aureus causes variety of infections in humans and animals worldwide and predominates in surgical wound infections. This study assessed the antimicrobial potential of the stem bark extract of Chrysophyllum albidum against an array of vancomycin resistant Staphylococcus aureus (VRSA) isolated from clinical samples. METHODS The methanolic crude extract of the plant was ...

As an important reserve cultivated land resource in my country, its development and utilization are of great significance to ensure food security. Aiming at the problems bare gravel leakage shallow soil layer barren rock beach area, through community simulation experiments, different covering structures were set up on basis underlying gravel, effects physical chemical properties crop yield moni...

Potential biological properties of newly synthesized single and double alkyl chain N-oxides of tertiary amines (NTA) were studied. Individual compounds in each of the series had alkyl chains of different length. Various experiments were performed to determine a mechanism of the interaction between NTA and model and biological membranes. These were measurements of hemolytic efficiencies of NTA (...

introduction: there are several methods for evaluating microleakage in dentistry, for example dye or bacterial leakage, electro-chemical methods, radioisotope labeling and fluid filtration. the purpose of this study was to assemble the fluid filtration system for quantitative evaluation of microleakage in dental materials. materials and methods: the roots were connected to a tube filled with an...

Abstract This work aimed to investigate the interaction between salt stress and application of silicon dioxide-nanoparticles. In this study, gerbera plants grown in soilless culture were supplied with nutrient solutions different NaCl concentrations (0, 5, 10, 20 30 mM) combination SiO 2 -NPs spray 25 50 mg · L −1 ). Exposure salinity increased sodium concentration but decreased potassium calci...

Saline stress affects plants’ performance, causing change at the morphological and physiological levels. Several genotypes have developed mechanisms to face salinity, avoiding or tolerating it. Potassium supply is considered an advantageous strategy reduce salt injury improve plant tolerance. In this study, we used three accessions (A10.1, ME034V Ast-1) of Setaria viridis (L.) P.Beauv., a C4 mo...

atp-sensitive potassium (katp) channel openers have a relaxation effect due to the lower cellular membrane potential and inhibit calcium influx. there has been considerable interest in exploring katp channel openers in the treatment of various diseases such as cardiovascular, cerebrovascular, and urinary system disease and premature labor. the purpose of this study was to synthesize 3,3,6,6-tet...

Sunflower (Helianthus annuus L. cv Russian Mammoth) hypocotyl segments deficient in either B or Ca exhibited a higher rate of potassium leakage, compared to nondeficient segments. Potassium leakage, used here as an indication of membrane integrity, was completely reversed by the addition of H(3)BO(3) or Ca(NO(3))(2) to the incubation medium of the B-deficient or Ca-deficient hypocotyl segments,...

The ash mudstone in some oil formations is highly water-sensitive. formation fractured, and the risk of well leakage collapse not negligible. This study presents a countermeasure for prevention, based on “force-chemistry synergistic balance” approach utilization environmentally friendly efficient hydration inhibitors. relevance this demonstrated considering drilling fluid system with high potas...

leakage in water distribution networks causes waste of water and economical losses. in this paper a new method is presented to calculate nodal and pipes leakage in water distribution systems using capabilities of epanet2.10 software. the method estimate the total water losses in the system based on iwa methodology using minimum night flow (mnf) measurements. recognising the pressure dependency ...