Recently, the issue of machine condition monitoring and fault diagnosis as a part of maintenance system became global due to the potential advantages to be gained from reduced maintenance costs, improved productivity and increased machine availability. The aim of this work is to investigate the effectiveness of a new fault diagnosis method based on power spectral density (PSD) of vibration sign...

I N October 1997 four cows on a farm situated on the Halland Ridge in southern Sweden died after drinking water from a nearby stream. The water was contaminated with acrylamid which, it emerged, came from a nearby 10 kilometre railway tunnel construction site. The railway project had been plagued by trouble from the beginning. The Halland Ridge is a `horst', a heap of earthcrust formed by tecto...

In this paper we present a distributed and modular system to convey small and fragile objects. This is done by attaching similar modular blocks together to form a larger conveyance surface. Similar to other networked control systems, each block is composed of several sensors, actuators and communication infrastructure. Control of a levitating object should be done distributed and real-time. We ...

Abstract- In this research, the performance measures of water equity and productivity have been optimizedin the entire DoroodzanIrrigation Network by using genetic algorithms. Results indicated thatirrigation water management improvement at field scale[increasing irrigation application efficiency (Ea) and water reduction fraction (WRF)] has much more impressive impact on raising the performance...

An economic-engineering optimization model of California’s major water supply system is presented. The model’s development, calibration, limitations, and results are reviewed. The major methodological conclusions are that large-scale water resources optimization models driven by economic objective functions are both possible and practical; deterministic models are useful despite their limitatio...

Elham AHMADI*, Seyed Ali POURBAKHSH, Malahat AHMADI, Alireza TALEBI Department of Microbiology, Faculty of Veterinary Medicine, Urmia University, Urmia, Iran Department of Poultry Diseases, Razi Vaccine and Serum Research Institute, Karaj, Iran Department of Microbiology, Faculty of Veterinary Medicine, Urmia University, Urmia, Iran Department of Clinical Sciences, Faculty of Veterinary Medicin...