نتایج جستجو برای: cleaning validation
تعداد نتایج: 193585 فیلتر نتایج به سال:
Inadequate hole cleaning can lead to many problems in horizontal and directional wells. In this work, we tried to investigate the cutting transport phenomenon by an experimental directional drilling simulator, considering the differences between the operational and experimental conditions. The inclination, fluid type (water, foam, viscous, and dense), rotary speed (0 and 110 rpm), nozzle bit si...
An accurate fuel consumption prediction model is the basis for ship navigation status analysis, energy conservation, and emission reduction. In this study, we develop a black-box based on machine learning white-box mathematical methods to predict rates. We also apply Kwon formula as data preprocessing cleaning method that can eliminate generated during acceleration deceleration process. The tes...
Studies on indoor air quality (IAQ) have linked exposure to microorganisms in a variety of illnesses. The association between quality, surface contamination, and IAQ under heterogeneous cleaning procedures are all crucial factors that were investigated this study. ATP bioluminescence test demonstrated significant correlation (r = 0.89; p 0.05) with bacterial count obtained from swab specimens m...
In this study, thermodynamic and economic analysis of a photovoltaic electricity generation system (PVEGS) with and without self-cleaning panels is reported. In the first part, thermodynamic analyses are used to characterize the performance of the system. In the second part, the economic comparison of photovoltaic electricity generation with and without self-cleaning panels is carried out for a...
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...
Residential and commercial gaseous air cleaning technologies have not gained wide acceptance in the marketplace, in part due to the lack of performance data from field tests or simulation studies. This paper describes a field study of the performance of two gaseous air cleaners in a single room test house and simulations based on these tests with an indoor air quality model (CONTAMW). Air clean...
Patients should be informed about the benefits and risks of endoscopic retrograde cholangiopancreatography (ERCP)Only specially trained and competent personnel should carry out endoscope reprocessing.Manufacturers of duodenoscopes should provide detailed instructions on how to use and reprocess their equipment.In the case of modifications to their equipment, manufacturers should provide updated...
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...
In this paper, we considered one of the problems that arise during drilling automation, namely automation lithology identification from drill cuttings images. Usually, work is performed by experienced geologists, but a tedious and subjective process. Drill are cheapest source rock formation samples; therefore, reliable prediction can greatly reduce cost analysis drilling. To predict content ima...
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