vibrio cholerae is a human pathogen that causes mild to severe diarrheal illnesses and has major public health significance. the aim of this study was to investigate the effects of antimicrobial activity of the gold nanoparticles on vibrio cholera. gold and silver nanoparticles are chemically synthesized. standard strain of vibrio cholerawas cultured in a nutrient broth. minimum inhibitory conc...

In this paper, a multi-scale analysis scheme for solidification based on two-scale computational homogenization is discussed. Solidification problems involve evolution of surfaces coupled with flux jump boundary conditions across interfaces. We provide consistent macro-micro transition and averaging rules based on Hill’s macrohomogeneity condition. The overall macro-scale behavior is analyzed w...

This paperpresentsexperimental investigationsandfinite element simulationsonmicro-millingofTi–6Al– 4V alloy with fine grain uncoated and cBN coated micro-end mills. Micro-milling of Ti–6Al–4V using uncoated and cBN coated tungsten carbide micro-end mills are conducted; surface roughness, burr formation and tool wear are measured. Effects of machining parameters on surface roughness, burr format...

Recently developed perfusion micro-bioreactors offer the promise of more physiologic in vitro systems for tissue engineering. Successful application of such bioreactors will require a method to characterize the bioreactor environment required to elicit desired cell function. We present a mathematical model to describe nutrient/growth factor transport and cell growth inside a microchannel biorea...

Microelectromechanical Systems (MEMS), by their nature as sensors and actuators, require application specific packaging. The package is the near environment of the MEMS device and hence has a direct effect on its thermal behavior, on mechanical effects, and on environmental compatibility and contamination. Therefore, understanding the influence of the packaging on MEMS device performance is cri...

In the present studies we developed lentivirus vectors with regulated, consistent transgene expression in B lymphocytes by incorporating the immunoglobulin heavy chain enhancer (E micro ) with and without associated matrix attachment regions (E micro MAR) into lentivirus vectors. Incorporation of these fragments upstream of phosphoglycerate kinase (PGK) or cytomegalovirus promoters resulted in ...

Ecosystem analysis has established nutrient cycling as an important area of ecology involving biological, chemical, and geological interactions. Studying the flow of elements through ecosystems provides us with a tool for understanding the functioning of ecosystems. For example, if an ecosystem component has a rapid flux of elements through it, or if it stores large amounts of an element, that ...

Abstract Orthopedic implant coatings with optimized surface topography and chemistry can achieve favorable osteogenesis inflammatory responses. In this work, to take advantage of micro/nano-topography nutrient element Mg, atmosphere plasma spray hydrothermal treatment were employed fabricate two kinds Mg-incorporated micro/nano-topographical calcium silicate 0.9 15.7 wt% Mg content (Mg1-CS Mg2-...

Vibrio cholerae is a human pathogen that causes mild to severe diarrheal illnesses and has major public health significance. The aim of this study was to investigate the effects of antimicrobial activity of the gold nanoparticles on Vibrio cholera. Gold and Silver nanoparticles are chemically synthesized. Standard strain of Vibrio cholerawas cultured in a nutrient broth. Minimum inhibitory conc...