نتایج جستجو برای: polyvinyl chloride pvc

تعداد نتایج: 94770  

Journal: :The Journal of the Acoustical Society of America 2011
Harry J Simpson Jon M Collis Raymond J Soukup Michael D Collins William L Siegmann

A series of laboratory experiments was conducted to obtain high-quality data for acoustic propagation in shallow water waveguides with sloping elastic bottoms. Accurate modeling of transmission loss in these waveguides can be performed with the variable rotated parabolic equation method. Results from an earlier experiment with a flat or sloped slab of polyvinyl chloride (PVC) demonstrated the n...

2014
Ashish Gothwal Puneet Beniwal Vikas Dhull Vikas Hooda

Polyvinyl chloride (PVC) can be used to develop reaction beaker which acts as electrochemical cell for the measurement of OP pesticides. Being chemically inert, corrosion resistant, and easy in molding to various shapes and size, PVC can be used for the immobilization of enzyme. Organophosphorus hydrolase was immobilized covalently onto the chemically activated inner surface of PVC beaker by us...

Journal: :journal of membrane science and research 0
iman khalilinejad membrane processes research laboratory (mprl), department of chemical engineering, amirkabir university of technology (tehran polytechnic), mahshahr campus, mahshahr, p.o. box 415, iran hamidreza sanaeepur membrane processes research laboratory (mprl), department of chemical engineering, amirkabir university of technology (tehran polytechnic), mahshahr campus, mahshahr, p.o. box 415, iran ali kargari membrane processes research laboratory (mprl), department of chemical engineering, amirkabir university of technology (tehran polytechnic), mahshahr campus, mahshahr, p.o. box 415, iran

in this work, novel thin film composite membranes (tfcs) of poly (ether-6-block amide) (pebax-1657) on a polyvinyl chloride (pvc) ultrafiltration membrane as support were prepared using inclined coating method for co2 separation. investigating the effects of top selective layer thickness formed by controlling the coating angle (15-60°) and polymer solution concentration (5-10 wt.%), and also, t...

2014
Fethi BEN ABDALLAH Rihab LAGHA Khaled SAID Héla KALLEL Jawhar GHARBI

BACKGROUND The aim of this study was to evaluate the ability of 15 serotypes of Salmonella to form biofilm on polystyrene, polyvinyl chloride (PVC) and glass surfaces. . METHODS Initially slime production was assessed on CRA agar and hydrophobicity of 20 Salmonella strains isolated from poultry and human and two Salmonella enterica serovar Typhimurium references strains was achieved by microb...

Journal: :European urology 2005
D J M K De Ridder K Everaert L García Fernández J V Forner Valero A Borau Durán M L Jauregui Abrisqueta M G Ventura A Rodriguez Sotillo

OBJECTIVES To compare the performance of SpeediCath hydrophilic-coated catheters versus uncoated polyvinyl chloride (PVC) catheters, in traumatic spinal cord injured patients presenting with functional neurogenic bladder-sphincter disorders. METHODS A 1-year, prospective, open, parallel, comparative, randomised, multi centre study included 123 male patients, > or =16 y and injured within the ...

2009
Joseph Alan Greenway Joseph A. Greenway Shawn L. Gerstenberger

An Evaluation of Plastic Toys for Lead Contamination in Day Care Center in the Las Vegas Valley by Joseph Alan Greenway Dr. Shawn L. Gerstenberger, Committee Chair Associate Professor, Department of Environmental and Occupational Health School of Community Health Sciences University of Nevada, Las Vegas The harmful effect of childhood exposure to environmental lead continues to be a major healt...

2012
Mary C Machado Keiko M Tarquinio Thomas J Webster

Ventilator-associated pneumonia (VAP) is a serious and costly clinical problem. Specifically, receiving mechanical ventilation for over 24 hours increases the risk of VAP and is associated with high morbidity, mortality, and medical costs. Cost-effective endotracheal tubes (ETTs) that are resistant to bacterial infections could help prevent this problem. The objective of this study was to deter...

Journal: :Pest management science 2007
Chris J Peterson

The mobility, longevity and termiticidal activity of imidacloprid (Premise 2 termiticide; Bayer Environmental Sciences) at the termiticidal labeled rate for perimeter treatment were tested in vegetated and non-vegetated soil columns in two tests: in cone plots and in polyvinyl chloride (PVC) pipes. Imidacloprid content in the cone plot eluate peaked at 1 month, declined rapidly by the second mo...

Journal: :Recycling 2023

The Voluntary Agreement for Collecting and Recycling Plastic Waste (VA), including polyvinyl chloride (PVC) profiles flooring materials, will be converted to an Extended Producer Responsibility (EPR) system from 2023. objective of this study is calculate the standard recycling cost market size preparing new system. Among total companies participating in VA, a analysis was conducted 11 profile b...

Journal: :Fibers 2021

Polyvinyl chloride (PVC) is a widely used polymer, not only in industry, but also our daily life. PVC material that can be applied many different fields, such as building and construction, health care, electronics. In recent decades, the success of electrospinning technology to fabricate nanofibers has expanded applicability polymers. have been successfully manufactured by electrospinning. By c...

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