Understanding and improving the performance of miniature devices powered by micro-combustion have been focus continued attention researchers recently. The goal present work is to investigate behavior premixed methane–air combustion in a quartz microreactor with an externally controlled wall temperature. Specifically, impacts flow inlet velocity, equivalence ratio, channel size are examined. Thi...

This paper's numerical study, which applies the finite volume approach and SIMPLE algorithm, aims to dynamically analyze airflow through a channel with Z-obstacles. Three distinct models were used place Z-barriers inside channel. According Demartini et al.'s model (2004) as depicted in example A from present analysis, first Z-barrier (fin) is attached top wall (heated) second (baffle) bottom (i...

In this paper we present a first order study of liquid water detachment and entrainment into air flows in hydrophobic microchannels. A silicon based microfabricated test structure was used for this purpose. It consists of a 500 μm wide by 45 μm deep U-shaped channel 23 mm in length through which air is flown. The structures are treated with a Molecular Vapor Deposition (MVD) process that render...

a research can also reveal the cooperative effectiveness of agencies such as evaluation will lead to discover the weakness and strengths for further improvement of this program. the present study was designed in 2009 especially to see the effectiveness of the working of agricultural extension staff as perceived by farmers in district okara-pakistan. the data were collected with the help of a sp...

background: measuring and monitoring of air pollutants are one of environmental and all' pollution controls tools. due to lack of widespread data in iran, this study was performed to estimate the trends of major pollutant emissions to atmosphere in the uk from 1980 to 1996. methods: this investigation is a retrospective study that the data were collected from the departments of environment, tra...

Supporting explosive data traffic and massive connections is the most critical challenge of 5G beyond networks. To overcome this challenge, an unmanned aerial vehicle (UAV) can be exploited as a promising communication platform in future wireless networks due to its inherent advantage flexibility, mobility, hovering low cost. In particular, air-to-air air-to-ground channels are much better than...

The prevalence of asthma keeps on increasing worldwide, especially in western societies over last 40 years. The mechanism of asthma is unclear. Recently, concern about indoor air pollution as a risk factor for asthma has been arisen. In present study, 25 Kun Ming male mice were placed in an air chamber containing respective formaldehyde (FA) concentration of 0, 0.5, 1.0, 3.0 mg/m3,and 3.0 mg/m3...