The chlorinated solvent, methylene chloride (also known as dichloromethane) has been used in industry for over 80 years. Its unique combination of properties low boiling point, high solvency power, relative inertness, low toxicity and non flammability has led to its wide variety of applications, such as paint and varnish removal, as an extraction medium/process solvent, and in aerosols, electro...

In high-throughput molecular profiling studies, genotype labels can be wrongly assigned at various experimental steps; the resulting mislabeled samples seriously reduce the power to detect the genetic basis of phenotypic variation. We have developed an approach to detect potential mislabeling, recover the "ideal" genotype and identify "best-matched" labels for mislabeled samples. On average, we...

OBJECTIVE Studies have demonstrated frequent contamination of stethoscope and usefulness of different disinfectants. Albeit, studies on the precise mode of cleaning and frequency of cleaning are lacking. This study was carried out to determine efficacy of 66% ethyl alcohol as disinfectant, rate of recontamination without cleaning and benefits of daily versus immediate cleaning. METHODOLOGY Pr...

BACKGROUND Epidemiological studies have shown an association between cleaning work and asthma, but the risk factors are uncertain. The aim of this study was to assess the risk of asthma in women employed in domestic cleaning. METHODS A cross sectional study was conducted in 4521 women aged 30 to 65 years. Information on respiratory symptoms and cleaning work history was obtained using a posta...

The literature on chemical cleaning of polymeric hollow fibre ultrafiltration and microfiltration membranes used in the filtration of water for municipal water supply is reviewed. The review considers the chemical cleaning mechanism, and the perceived link between this and membrane fouling by natural organic matter (NOM) – the principal foulant in municipal potable water applications. Existing ...

Cleaning frequency of the solar PV power system plays a major role in energy harvesting. This paper proposed an optimized cleaning for plants. The objective is to maximize harvesting and increase financial profit. technique tested roof top grid connected 20 kW plant Cairo, Egypt. Experimental results are collected one year throw period from January 2021 December based on real time monitoring un...

The suspend feature of the modern smart device practically suppresses the background segment cleaning of the log-structured file system. In this work, we develop Suspend-aware Segment Cleaning for the log-structured file system. We seamlessly integrate the segment cleaning into the suspend module of the smartphone OS so that the log-structured file system can reclaim the free segments without i...

This study investigated the impact of two caustic and one acidic cleaning formulations (namely MC11, PC98, and MC3, respectively) on the properties and separation efficiency of three different nanofiltration (NF) membranes (namely NF270, NF90 and TFC-SR100). Overall, the impact of chemical cleaning on surface properties and rejection was membrane and cleaning reagent specific. It was driven mos...

In order to solve the problems of difficulty in cleaning inner wall hammer-shaped component RIC system nuclear power plant and low surface accuracy after cleaning, a profiling was designed. First, working principle is introduced ensure that meets installation requirements. Secondly, normal operation airbag, mechanical model between air supply volume pump force on conical derived. Finally, accur...