نتایج جستجو برای: foreign particles
تعداد نتایج: 234300 فیلتر نتایج به سال:
Nanoparticles as lubricant additives under a certain average diameter and concentration may reduce wear, friction scuffing damage. However, atmospheric dust particles affect not only human health but also the efficiency of components, even cause component failures. Therefore, contact characteristics at interfaces with foreign require careful investigation. In this work, 3-body microcontact mech...
OBJECTIVE Daily clinical activities in dental operatory expose dental surgeons to varied forms of ocular events. The purpose of the study was to determine the prevalence and pattern of ocular splashes and foreign bodies among dental surgeons in Nigeria. METHODS This questionnaire-based cross-sectional of dental surgeons in Southern Nigeria was conducted between September 2010 and August 2011....
A foreign-body-type host response can contribute to the induction and release of collagenolytic tissue-destructive enzymes of pathogenetic significance. Our aim was to analyse collagenase-3 in two conditions with putative involvement of foreign-body reactions. Synovial membrane-like tissue samples were obtained from cases of aseptic loosening of a total hip replacement (THR) and osteoarthritis ...
BACKGROUND Chimeric virus-like particles (VLP) allow the display of foreign antigens on their surface and have proved valuable in the development of safe subunit vaccines or drug delivery. However, finding an inexpensive production system and a VLP scaffold that allows stable incorporation of diverse, large foreign antigens are major challenges in this field. RESULTS In this study, a versatil...
Foreign object damage (FOD) occurs when hard, millimeter-sized objects such as gravel or sand and even the pieces of the engine components are ingested into aircraft jet engines. Particles impacting blades produce small indentation craters which can become sites for fatigue crack initiation, severely limiting the lifetime of the blade. In this study, the impact on the edge of a thin plate is in...
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