نتایج جستجو برای: polypropylene

تعداد نتایج: 8191  

M. H. Eikani M. Honarvar M. R. Omidkhah M. Varaee N. Mooraki

Molasses is a significant by-product of sugar beet or sugar cane refining industry. In this work, the effects of storage temperature and packaging on the contents of free amino acids (AAs) in sugar beet and sugar cane molasses after freeze drying were inquired. The effect of different variables such as, temperature (4 and 25˚C) and light (Metallized polypropylene container and Normal polypropyl...

Journal: Polyolefins Journal 1999

In abiotic degradation the action of light radiation is one of the most important parameters, because polymers undergo degradation due to the action of light (natural or artificial). The aim of this study was to investigate the degradation rate for samples of polypropylene (PP) modified with an organic pro-degradant submitted to ageing in a natural environment and to accelerated ageing test. Th...

Boon Keat Yew Hui Ping Liew Mei Yun Kwok Wee Leng Siew Yong Mei Ong

The synthetic seed technology is becoming popular due to its wide application in germplasm conservation and for exchanges between countries in the floriculture trade. In this study, this method was used to study the germination and conversion capabilities of orchid species Dendrobium White Fairy when stored at different storage times and with different storage containers. A high germination per...

2016
Piotr Kasina Ann Tammelin Anne-Marie Blomfeldt Bengt Ljungqvist Berit Reinmüller Carin Ottosson

BACKGROUND Lowering air-borne bacteria counts in the operating room is essential in prevention of surgical site infections in orthopaedic joint replacement surgery. This is mainly achieved by decreasing bacteria counts through dilution, with appropriate ventilation and by limiting the bacteria carrying skin particles, predominantly shed by the personnel. The aim of this study was to investigate...

2009
Samir A. Ammar

BACKGROUND Surgical management of giant ventral hernias is a surgical challenge due to limited abdominal cavity. This study evaluates management of giant ventral hernias using polypropylene mesh and host tissue barrier after suitable preoperative preparation. METHODS In the period from January 2005 and January 2007, 35 patients with giant ventral hernias underwent hernia repair. After careful...

Journal: :Journal of Alzheimer's disease : JAD 2012
Armand Perret-Liaudet Mathieu Pelpel Yannick Tholance Benoit Dumont Hugo Vanderstichele Willy Zorzi Benaissa Elmoualij Susanna Schraen Olivier Moreaud Audrey Gabelle Eric Thouvenot Catherine Thomas-Anterion Jacques Touchon Pierre Krolak-Salmon Gabor G Kovacs Arnaud Coudreuse Isabelle Quadrio Sylvain Lehmann

Tau proteins and amyloid-β (Aβ) peptides are the current recognized cerebrospinal fluid (CSF) biomarkers used as an aid in the diagnosis of Alzheimer's disease (AD). However, there is no consensus on their clinical use due to non-qualified cut-off values, probably related to the observed high pre-analytical and analytical variability. Standardized pre-analytical protocols have therefore been pr...

Journal: :Saudi medical journal 2010
Yan Ren Li Hong Xue-xian Xu Xiao-ying Qi

OBJECTIVE To report our experience on the erosion of polypropylene mesh used in pelvic reconstructive surgeries, and to discuss the pathological changes of mesh erosion. METHODS We conducted a retrospective study of 128 patients receiving pelvic reconstructive surgeries with polypropylene mesh from May 2006 to May 2009 in the Department of Gynecology and Obstetrics, Renmin Hospital of Wuhan U...

Journal: :Revista do Colegio Brasileiro de Cirurgioes 2010
Marcelo Bentacor Lontra André Vicente Bigolin Ricardo Gonçalves da Costa João Vicente Grossi Priscila Scalco Sérgio Roll Leandro Totti Cavazzola

OBJECTIVE To evaluate the efficacy of a lactic acid biomaterial (SurgiWrap®) as a protector of the polypropylene mesh (Marlex®) regarding the formation of intraperitoneal adhesions in rats. METHODS Forty Wistar rats formed the following groups: Group 0 (Sham)--only laparotomy; Group I--polypropylene mesh; Group II--polypropylene mesh protected by a film of lactic acid. These animals were subm...

2006
Armando José d’Acampora Fabrícia Slomski Joli Ricardo Tramonte

Purpose: To compare the use of polypropylene and PTFE meshes in the treatment of incisional hernias made experimentally on Wistar rats. Methods: The experiment used 24 Wistar rats divided into three cohorts: C-A (ressection of a segment of abdominal wall), E-A (ressection and placement of PTFEe mesh), E-B (resection and placement of polypropylene mesh). After 28 days, the mesh and the surroundi...

2015
X. B. He

The paper has studied the influences of the volume content and slenderness ratio of fibrillated polypropylene fiber on the impermeability durability of self-consolidating concrete (SCC) reinforced with the fibrillated polypropylene fiber, and proposed to use the modified relative permeability coefficient method to evaluate the water-resistant properties of SCC reinforced with the fiber. Also, t...

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