The study aimed to prepare Al2O3 nanoparticles (NPs) from aluminum wastes (originate workshops as waste) and tested its antimicrobial activity against bacteria (Gram-negative): Escherichia coli ATCC25922, Salmonella Typhimurium ATCC14028, Pseudomonas aeruginosa ATCC27853, Alcaligenes aquatilis (Gram-positive): Staphylococcus aureus ATCCBAA977 Streptococcacea pneumonia ATCC49619, types of Fungal...

Effect of strain energy on corrosion behavior ultrafine-grained (UFG) copper prepared by severe plastic deformation (SPD) was investigated in terms microstructural evolution. The SPD processed material showed an structure after grain refinement for several time processes, which will affect mechanical and Homogeneity can be obtained efficiently through the pressing process commonly known as simp...

Modern vehicle bodies make intensive use of high strength steel grades to meet the contradicting demand of lighter weight and simultaneously better mechanical performance. For many steel grades microalloying by niobium is the key to achieve their characteristic property profile. In HSLA steels niobium enhances the strength primarily by grain refinement. In interstitial free high strength steels...

Many soils have clay-enriched horizons that are thought to result from pedogenic processes. Various hypotheses are proposed for expected clay size-distributions in soil profiles. The average size of clay crystallites determined by the amount of broadening of x-ray diffraction peaks ranged from 160 to >2000A 0 , but the lack of trends in four loess-de• rived soils did not permit the hypotheses t...

We examine nonequilibrium features of collapse behavior in model polymers with competing crystallization and glass transitions using extensive molecular dynamics simulations. By comparing to ‘‘colloidal’’ systems with no covalent bonds but the same non-bonded interactions, we find three principal results: (i) Tangent-sphere polymers and colloids, in the equilibrium-crystallite phase, have nearl...

kilka fish are known as the main industrial and pelagic species of iran that are captured abundantly in the southern caspian sea. this study was conducted to survey the effectiveness of refinement steps on kilka (clupeonella delicatula) crude oil quality and fatty acid profiles. neutralization, bleaching, winterization and deodorization were performed on crude oil with deodorization done under ...