نتایج جستجو برای: Polyvinyl Chloride

تعداد نتایج: 92133  

Journal: :NIPPON GOMU KYOKAISHI 2007

Journal: :Journal of clinical microbiology 1983
N K Sheth T R Franson H D Rose F L Buckmire J A Cooper P G Sohnle

During an 8-month period all intravascular catheters were removed by sterile technique upon completion of use and submitted to the hospital microbiology laboratory. All catheters were routinely cultured by the semiquantitative culture technique, with greater than or equal to 15 colonies being defined as a positive result. Of the 687 Teflon catheters cultured, 6.9% were positive by culture, comp...

Journal: :Journal of Polymer Science 1961

Journal: :iranian journal of radiation research 0
m. kattan atomic energy commission of syria, department of radiation technology, accuracy of measurements division, p.o. box 6091, damascus, syria y. daher atomic energy commission of syria, department of radiation technology, accuracy of measurements division, p.o. box 6091, damascus, syria

background: the purpose of this work was to investigate the use of polyvinyl chloride (pvc) dyed with methyl red as a high dose radiation dosimetry. materials and methods: commercial pvc films from sabic made from resins pvc57s with thickness of 60 µm and methyl red with a molecular weight of 269.31 were used. irradiation was carried out using a 60co γ-ray generator with sources arranged in rec...

Journal: :American Journal of Public Health 1976

Journal: :تحقیقات مهندسی کشاورزی 0
نیره کریمی فارغ التحصیل کارشناسی ارشد دانشگاه منابع طبیعی و علوم کشاورزی گرگان لاله مشرف استادیار بخش تحقیقات فنی و مهندسی مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی استان اصفهان سعید ملک عضو هیأت علمی بخش تحقیقات فنی و مهندسی مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی استان اصفهان

the present study examined the effect of packaging film on the quantitative and qualitative properties of button mushrooms. the three types of packaging tested were a clear polyvinyl chloride box, polyvinyl chloride stretch film and biaxially-oriented polypropylene film (bopp). the five types of moisture absorbers examined were silica gel (2.5 g, 1.25 g), sodium chloride (2.5 g, 1.25 g), and si...

2008
D. BRAUN

A survey is given of the recent advances in the study of and the present knowledge of the thermal degradation of polyvinyl chloride. The sites for initiation of the thermal degradation, the mechanism of the dehydrochiorination, the discolouration of PVC by heat and the influence of plasticizers on the rate of degradation are discussed.

Journal: :Materials Science Forum 2010

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