Theoretical models for heating, evaporation, material flow, and stress and strain generation accompanying CO2 laser damage mitigation and surface treatment of fused silica are developed to aid understanding of scaling with process parameters. We find that lateral nonlinear heat transport is an important cooling mechanism, more significant than evaporative cooling. Scaling laws relating experime...

Ah&act-Steady state thermomechanical deformations of a thick viscoplastic target being penetrated by a fast moving long rigid cylindrical penetrator are analysed by the finite element method. Two different constitutive relations, the Bodner-Partom flow rule, and the Litonski-Batra flow rule, are used to model the viscoplastic response of the material. The two flow rules are calibrated to give e...

Groundwater microbial community samples are traditionally collected using pumping techniques optimized for groundwater chemistry assessment although the impact of groundwater pumping parameters on apparent bacterial community structures (BCS) is not really known. We therefore studied the impact of pumping lift, flow regime and tubing material on BCS, which were analyzed by terminal-restriction ...

objective: diabetes mellitus is one of the most common metabolic disorders which have several oral complications such as hypofunction of salivary glands. the aim of present study was to compare the unstimulated whole saliva (uws) flow rate in diabetic type ii patients and healthy peoples who admitted in yazd diabetic center. materials and methods: in this analytic-observational study, 78 patien...

The present study deals with the analysis of the effects of radiative heat transfer of micropolar fluid flow over a porous and stretching sheet in the presence of magnetic field. The dynamic viscosity and thermal conductivity coefficient have formulated by temperature-dependent relations to obtain more exact results. The flow is supposed two-dimensional, incompressible, steady and laminar and t...

Design paradigm exactly addresses the higher-level design issues where the implementation field (mechanical, electrical etc.) of the product is left for later stages. Once the general design problem is understood, better products will be emerging; especially products requiring a cooperation of various engineering-field components are a bigger concern. The idea is that design is a phenomenon, cu...

Abstract: properties of AA6082 aluminum alloy. Considering that aging phenomenon affects the distribution of alloying elementin matrix, and the fact that different distribution of alloying elements has different impediments to dislocationmovement, a material model based on microstructure, has been developed in this research. A relative volume fractionor mean radius of precipitations is introduc...

Reduction of phosphorus (P) inputs to surface waters may decrease eutrophication. Some researchers have proposed filtering dissolved P in runoff with P-sorptive byproducts in structures placed in hydrologically active areas with high soil P concentrations. The objectives of this study were to construct and monitor a P removal structure in a suburban watershed and test the ability of empirically...

The paper suggests an approach for optimizing a material ow system consisting of two work-stations and an intermediate bu er. The material ow system may be a production system, a distribution system or a pollutant-deposit/removal system. The important characteristics are that one of the work-stations is unreliable (random breakdown and repair times), and that the performance function is formula...

1. Introduction The automotive industry is one of the most automated manufacturing industries worldwide nevertheless there is still a lot of potential for further improvements. On the given example of an existing production plant at DaimlerChrysler AG a new holonic concept has been developed by HMS partners breaking up rigid transfer line structures and introducing new concepts of flexible reso...