This paper focuses on a hydraulic radius separation approach used to calculate the boundary shear stress in terms of bed and wall shear stress proposed in a trapezoidal channel. The average bed and sidewall shear stress in smooth trapezoidal open channels are derived after using Guo & Julien (2005) early equations taking a part of an investigation to cover both rectangular and trapezoidal chann...

The paper presents an experimental analysis of timber – framed wall panels with openings, coated with single fibre-plaster boards fastened to a timber frame. The present study is a continuation of the research work realized in the last years in reinforcing of the prefabricated timber-framed wall panels without any openings. The aim of the study presented here was to provide the information abou...

In this paper, a novel analytical method was developed based on statistical energy analysis framework to evaluate sound transmission loss through ventilated windows. The proposed method was compared to numerical and analytical models available in the literature. Results showed the success and advantage of the proposed model in predicting the acoustic performance of the ventilated window and the...

Introduction: Scatter radiation is one of the major sources of error in nuclear medicine data processing. Different methods of scatter correction have been introduced in order to improve the quality of data. However the best method is to avoid recording of scatter photons in acquisition. The only difference between scattered and non-scattered photons is the energy. Pulse height analyzer i...

In this paper, the design studies of output system are carried out for a dual regime Gyrotron in context India’s requirement clean energy. This study consists dimpled wall quasi-optical launcher (QOL) and RF window. After proper coupling energy from beam to wave, amplified wave need be down-convert Gaussian-like (much simplified lower order). The is designed with commercial software LOT/Surf3d....

Window-windcatchers, a passive ventilation method, have been shown to improve and enhance thermal comfort. Preliminary characterization of novel window-windcatcher has undertaken in previous work, but no relationship had identified between the actual rate (Qact), wind velocity (VTw) crucial design parameters such as fins angle (ϴ)). In this paper, that quantifies how window-windcatcher’s perfor...

background: the adverse effects of noise are well known and noise problems due to industrialization of communities are increasing over the time. oil industries due to the process and nature of production; contain many noise sources such as compressors, turbines, and pumps, which cause excessive noise exposure. the objective of this study was to evaluate the noise characteristics of compressors ...