A numerical investigation of the structure and extinction of n-heptane/air partially premixed  ames in a counter ow conŽ guration is reported. The  ame is computed using a detailed reaction mechanism consisting of 275 elementary reactions and 41 species. The mechanism is validated by comparing its predictions with measurements for both the premixed and nonpremixed  ames. The partially premi...

A simple approach to producing a 1×N beam splitter is demonstrated by fabricating a volumetric multiplex phase Fresnel zone plate in bulk transparent material. This comprised four layers of zone plates created in borosilicate glass by femtosecond laser direct-writing, each shifted laterally relative to the illumination axis, creating four separate beamlets. Since the power transmitted in each b...

In many industrial sectors, for example, aerospace, automotive and high-performance electronic industries, there is a significant need to join dissimilar materials. the case of medium-strength aluminum alloys, joints are commonly manufactured using Al-Si brazing fillers with melting temperature 575 °C. comparison high-strength alloys exhibit lower temperatures. Therefore, joining possibilities ...

A numerical reaction-transport model was developed to simulate the effects of microbial activity and mineral reactions on composition porewater in a 230-m-thick Pleistocene interval drilled Peru-Chile Trench (Ocean Drilling Program, Site 1230). This site has profiles similar those along many continental margins, where intense methanogenesis occurs alkalinity surpasses 100 mmol/L. Simulations sh...

The primary scientific objectives of the proposed research are to use a coupled atmosphere--ocean model to investigate and quantify the interaction between the oceanic and atmospheric boundary layers and its effect on environmental conditions in the coastal zone. The main focus will be on boundary layer interactions under coastal upwelling conditions, in which cold, upwelled ocean surface water...

The present work deals with the histoenzymological distribution pattern of enzyme acetylcholinesterase (E.C.3.1.1.7) in the different layers of olfactory bulb of Channa punctatus by employing a modified technique to visualize acetylcholinesterase containing neurons. Acetylcholinesterases distribution in the olfactory bulb shows a precise laminar distribution of enzyme which is alternatively mil...

This article is the result of studies rheological properties and reactivity acid solutions technical lignosulfonate, decationized lignosulfonic acid, hydrochloric with addition lignosulfonate. Compositions that include lignosulfonate can be used as displacement agents in development watered layers inhomogeneous reservoir properties. The use thickening additives solves several problems. Slowing ...