نتایج جستجو برای: cleaning capacity
تعداد نتایج: 296942 فیلتر نتایج به سال:
The problem of data cleaning, which consists of removing inconsistencies and errors from original data sets, is well known in the area of decision support systems and data warehouses. However, for some applications, existing ETL (Extraction Transformation Loading) and data cleaning tools for writing data cleaning programs are insufficient. One important challenge with them is the design of a da...
RATIONALE Cleaning tasks may imply exposure to chemical agents with potential harmful effects to the respiratory system, and increased risk of asthma and respiratory symptoms among professional cleaners and in persons cleaning at home has been reported. The long-term consequences of cleaning agents on respiratory health are, however, not well described. OBJECTIVES This paper aims to investiga...
OBJECTIVES To determine whether environmental cleaning and contamination are associated with variation in the prevalence of methicillin-resistant Staphylococcus aureus (MRSA) between nursing homes. DESIGN Prospective study of environmental contamination and cleaning quality. SETTING Nursing home. PARTICIPANTS Ten California nursing homes. MEASUREMENTS Nursing homes were categorized into...
introduction: pulpectomy of primary teeth is commonly carried out with hand files and broaches; a tricky and time consuming procedure. the purpose of this in vitro study was to compare the cleaning efficacy and time taken for instrumentation of deciduous molars using hand k-files and flex master rotary system. materials and methods: in this study, 68 canals of 23 extracted primary molars with a...
چکیده ندارد.
cotton/polyester knitted fabrics as a major production of textile industry was treated with titanium dioxide nanosized particles. the treated fabric with nanosized tio2 became whiter with a good self-cleaning property. also the discoloration of reactive black 5 dye was studied and reported. the stabilization of tio2 on cotton/polyester knitted fabrics by citric acid (ca) with sodium hypophospha...
مقدمه: یکی از شایعترین اختلالات ریوی در بزرگسالان بیماری های انسدادی مزمن ریه (copd) است که شامل برونشیت مزمن و آمفیزم می باشد. شدت این اختلال در تعیین میزان پاسخ به درمان موثر است و لذا امروزه سعی می شود معیارهای مختلفی در جهت درجه بندی شدت بیماری copd استفاده شود که از جمله آنها می توان به معیارهای بالینی ارائه شده توسط american thoracic society (ats) اشاره نمود. شناسایی ارتباطات موجود بین ای...
While specializing in primarily aqueous and semi-aqueous cleaning systems to replace hazardous solvents, TURI’ s Surface Cleaning Laboratory must also offer environmentally-friendlier chemical substitutions where water-based technologies do not apply. Media blasting for parts cleaning and supercritical extraction for precision cleaning are two options that will be reviewed on an application-spe...
Fouling is an age-old problem in many process industries. It is responsible for large energy and throughput losses, resulting in financial penalties and negative environmental impact. One effective mitigation strategy is the regular cleaning of fouled heat transfer devices. Optimization tools can be used to schedule the timing of cleaning actions in order to minimize the cost of fouling and imp...
Usable life of cleaning solutions in a model heat processing unit was studied by evaluation of the nature and quantity of residue remaining on the surface of the equipment after cleaning. Lipoidal residue was recovered from equipment surfaces by ether rinsing. A surface displacement technique was used to quantify the lipoidal material, which was characterized by gas-liquid chromatographic analy...
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