نتایج جستجو برای: adhesion coefficient
تعداد نتایج: 251846 فیلتر نتایج به سال:
The present work aims at reducing the friction of rubber soles sliding on ceramic floorings. Fitting bored cylindrical protrusions with different diameters on rubber soles was proposed. Experiments were carried out to evaluate the performance of the proposed protrusions in increasing friction coefficient at dry and contaminated floorings. It was found that, at dry sliding, friction coefficient ...
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...
Cohesive granular media have broad applications in industries. However, our understanding of their flow behavior is still limited compared to dry media, although rich knowledge about static and plastic properties has been gained. In this paper, we provide some insights into the cohesive from recent numerical studies using an inclined plane a shear cell. We evidence that nature flows significant...
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...
Abstract Background and Aim: Polish and glaze are 2 methods to decrease roughness and bacterial adhesion to the ceramic surfaces. This in vitro study assessed the effect of polish and glaze on the bacterial adhesion of 3 ceramics. Materials and Methods: In this in vitro trial, samples of zirconia-reinforced lithium silicate, lithium disilicate and monolithic zirconia ceramic specimens were mill...
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 we...
in vitro effects of four porcelain surface treatment methods on adhesion of lactobacilli acidophilus
objective: adhesion of lactobacillus acidophilus (l. acidophilus) to dental porcelain surface may lead to gingival inflammation and secondary caries. surface roughness is among the factors affecting this adhesion. the purpose of this study was to evaluate the effects of four different surface treatment methods on adhesion of l. acidophilus to dental porcelain. methods: sixty specimens (3x10mm...
The article compares the indicators of experimental and calculated bearing capacity bored piles installed using DDS technology, according to static tests normative calculations. also presents results compression soil samples around placed Drilled Displacement System (DDS) method. authors established dependence deformation properties soil, such as modulus deformation, angle internal friction adh...
The article discusses the solution to problem of underground railway transport slipping in dynamic modes, which occurs when there is a significant difference speeds driving and driven pairs wheels. state rail surfaces largely determines coefficient adhesion, therefore, using mathematical model, condition for dependence magnitude tractive effort selected. For effective acceleration deceleration ...
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