نتایج جستجو برای: adhesion
تعداد نتایج: 83070 فیلتر نتایج به سال:
Polypropylene (PP) has poor adhesion to metals and other surfaces for its chemical structure. Hence, chemical modification of PP is necessary for metal surface coating application. In this research, grafting of maleic anhydride (MA) onto co(propylene-b-ethylene) in the presence of a dicumyl peroxide (DCP) was accomplished in a single screw extruder. Characteristics of the modified polymer were ...
introduction: opium addiction can change immune response to types of stress such as injury or trauma due to alterations in the in secretion status of cytokines in the body. in this study, effects of opium addiction on wound healing and post-operative adhesion bands were assessed after laparotomy. materials and methods: male rats (n=20) were randomly divided into opium addicted (documented with ...
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determination of blood compatibility is an important problem in blood contacting devices. in this study, two classes of materials including polyurethane (based on polyethylene glycol and poly tetrametylene oxide) and polyvinyl alcohol samples, with different hydrophilicity properties were synthesized and their physico-chemical properties were compared. water uptake ratio, ftir spectroscopy, and...
Background and Objective: Adhesion formation is the commonest complication of abdominal surgery. Bearing an anti-oxidant activity, Silybum marianum may reduce adhesion formation. This study was an endeavor to shed light on the effect of Silybum marianum on intra-abdominal adhesions. Materials and Methods: In this experimental study, 30 rats were randomly assigned to three groups: treated by ...
Background: Abdominal adhesions are considered as an important problem in abdominal surgery. In this study we compared the effectiveness of atorvastatin, hyaluronic acid and interceed (oxidized cellulose) in prevention of postoperative intestinal adhesions. Material and Methods: A total of 40 Wistar-albino rats were randomly divided into 5 groups: Group 1 (Sham); Group 2 (Control ...
Background: Postoperative peritoneal adhesion bands are one of the most common complications caused by foreign material. Objective: To investigate the effect of colchicine on talc-induced peritoneal adhesion bands. Method: Adhesion bands were induced in 30 short hair England Guinea pigs by introduction of talc-saline solution (10 mL, 10%) into the peritoneal cavity. Afterwards, the pigs were ...
Nitride coatings with excellent hardness and wear resistance have been deposited by physical vapor deposition (PVD) in recent years. For most applications, the load bearing and adhesion of coatings are very important and can determine the life and performance of the final components. In this study, CrN/CrAlN nanostructured coatings with different thicknesses and numberes of layers were deposite...
This paper presents the movement dynamic of the train and the relationship between the speed of wheel and train, as well as a discussion about the concept of wheel slip. There are two different operation regions designated as creep and wheelspin areas for wheel slip. Creep and wheelspin areas have stable and unstable characteristics, respectively. Wheels and rails are constructed from iron, and...
ABSTRACT Adhesion bands and adhesion formation is one of the most importants post surgical complication in pelvic and abdominal operations. Post operation adhesions are the most common cause of intestinal obstruction in the western world. Approximatly one-third of all intestinal obstruction are likely to be due to adhesions. In over 10% of infertile women, adhesion formation is the main ca...
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