World Journal of Engineering: Volume 11 Issue 5

Physico-chemical models of galena flotation system

M. Chettibi, A. Abramov, A. Boutrid

Main idea to prevent the ground contamination by heavy metals is to extract them maximally with minimum consumption of chemical reagents. So, a perfect studying of pulp ionic…

Modeling of thermal contact problem of disc brake system with frictional heat generation

A. Belhocine, M. Bouchetara, A. Bakar, M. Nouby

Safety aspect in automotive engineering has been considered as a number one priority in development of new vehicle. Each single system has been studied and developed in order to…

Sandbars in alluvial channels: their formation processes and interaction with groins

M. Alauddin, T. Tsujimoto

Large sandbars resulted from the instability of loose sedimentary materials are very common in lowland rivers. These, not only, interrupt the inland waterways at low flow, but…

Geological conditions of coal bed methane occurrence in Handan - Fengfeng Mining area

Guoqiang Hao, Yifeng Yang, Chao Jin

The coal bed methane resources distribution of Handan - Fengfeng Mining area has the features of "richness in the midland and north while poorness in the south, and richness in…

Application of FY-2 precipitation data in meteorological drought monitoring of the Weihe river basin

Yujuan Wang, Shudong Wang, Shengtian Yang, Yuling Zhao, Mingcheng Wang, Banghui Yang

The remote sensing data have become the irreplaceable source of data for the regions with little or without rainfall data, but these data also require scientific analysis…

Dispersion of oil spilled under solid ice cover

Nirmala Ratchagar, S. Hemalatha

The model, presented here, is developed to study the axial dispersion and distribution of oil particle concentration in the presence of coriolis force of oil spilled under solid…

Quantum dots with indirect band gap: power-law photoluminescence decay

Karel Král, Miroslav Menšík

In this work the experimental effect of a slow decay of the photoluminescence is studied theoretically in the case of quantum dots with an indirect energy band gap. The slow decay…

Minimization of energy losses into a PWM Chopper

Abdelouahab Zaatri, Norelhouda Azzizi, Fouad Rahmani

This paper initially presents the results of the analysis of a non linear on/off control system which is capable of generating a pulse width modulation (PWM). This technique can…