Electrolyte-plasma treatment (EPT) has become widespread in industry as an alternative to traditional chemical, electrochemical and mechanical methods of improving the surface quality products made metallic materials. The advantages EPT are a high intensity smoothing microroughnesses, use low-concentration salt solutions electrolytes, ability process items complex shape. main disadvantage metho...

There are three major multi-electron reactions in nature: nitrogen fixation by bacteria, water oxidation photosynthesis, and oxygen reduction during respiration. Here we found that a cold atmospheric pressure He-plasma jet (CAPPJ) can oxidize N2 to HNO3 HNO2 at low temperature the plasma-air/water interface. Redox induced plasma occur not only plasma/air plasma/water interfaces, but also volume...

objective: assessments of cell reactions such as motility, orientation and activation to the topography of the substratum will assist with the fabrication of a proper implantable scaffold for future tissue engineering applications.the current challenge is to analyze the orientation effect of elecrospun nanofibers of poly (ε-caprolactone) (pcl) on viability and proliferation of mouse embryonic s...

this study was conducted to determine the effects of different levels and sources of copper supplementation on hematological values, ceruloplasmin and plasma copper, zinc and iron status in mehraban male lambs. twenty growing lambs were randomly allotted to four different treatments. treatments consisted of 1) 10 mg/kg cu in the form of cuso4, 2) 20 mg/kg cu in the form of cuso4, 3) 10 mg/kg cu...

Medical polymers, such as urinary catheters are widely used biomaterials. One of the main problem for using the urinary catheters is biofilm formation on their surface, when they are used in a long time in the body. Virulence and pathogenicity of Staphylococcus epidermidis is often enhanced when growing as a biofilm. Many techniques have been presented to reduce the biofilm formation by surface...

aim and objectives: the hepatitis c virus (hcv) is essentially hepatotropic but virus compartment have also been found in other important extra hepatic sites. detection of hcv rna in extra hepatic reservoirs such as peripheral blood mononuclear cells (pbmcs) is important for determining of disease progression and effective treatment. the present study aimed to determining of different hcv genot...

Background: In this study we have prepared the IgA solution from normal human plasma using plasma fractionation and ion exchange chromatography. Materials and Methods: Using fractionation of plasma with cold ethanol (starting with 8% ethanol), fraction III was prepared as a suitable source for IgA preparation. Then it was treated with caprylic acid for separation of impurities. For enrichm...

Recent advances in nanoscience have led to the development of numerous methodologiesfor controlled synthesis of mono dispersed nanoparticles and/or nanoclusters via surface stabilization by organic capping ligands. The application of these nanoparticles in catalysis and other fields often requires the removal of organic ligands. It is known that the removal of organic capping agents or or...

The role of low-pressure RF plasma in the inactivation of Escherichia coli O157, Klebsiella pneumoniae, Proteus mirabilis, and Enterobacter sakazakii using N2-O2 and SF6 gases was assessed. 1×109 colony-forming units (CFUs) of each bacterial isolate were placed on three polymer foils. The effects of pressure, power, distance from the source, and exposure time to plasma gases were optimized. The...