نتایج جستجو برای: and 3 perforated plastic tunnel mp15
تعداد نتایج: 17118442 فیلتر نتایج به سال:
This paper investigates the effects of a porous wall on development Tollmien–Schlichting (TS) waves propagating inside boundary layer. An experimental study performed in low-speed wind tunnel showed that microperforated panels over hollow chambers could promote laminar–turbulent transition. First, measurements streamwise evolution TS instabilities reveal greater amplification occurs perforated ...
numerical analysis of longitudinal and transverse surface settlement induced by epb tunneling- a case study: shiraz subway tunnels reza rahmannejad; mahdi esfandiary; eshagh namazi; hamed jamshidi determination of the racking reduction factor for an incomplete ellipse shaped tunnel considering the soil-structure interaction mohammad reza momenzadeh; mohammad reza mansoori; armin azi...
بررسی ریسک فاکتورهای آپاندیسیت پرفوره وغیر پرفوره در دو بیمارستان دانشگاهی بابل، سالهای 1382- 1380
Background: The early diagnosis of acute appendicitis before progression to gangrene or abscess formation is recognized as important to minimize morbidity from this common disease process. The aim of this study was to assess the value of different risk factors in the diagnosis of perforation. Methods: This descriptive-analytic and retrospective study was conducted to investigate epidemiologica...
Abstract Backgraound: Carpal tunnel syndrome (CTS) is the most common nerve compression neuropathy. It is a multifactorial syndrome and several systemic and local factors such as carpal tunnel anatomy and its variation change the size, shape and volume of this tunnel. In this study, we seek to explain the relation between anatomic variation of thenar muscle and CTS. Methods: This descripti...
this presentation will cover, appearance of normal nerve versus tendon; anisotropy (advantage and disadvantage); special case carpal tunnel; tendinopathy; nerve impingement; special case cubital tunnel.
To minimize unwanted noise, the exhaust gas of high pressure and high temperature coming out of internal combustion engine passes through silencer. Various types of silencers like absorptive, reactive and resonating, perforated type are widely implemented in actual practice .perforated reactive mufflers have an effective damping capability. This paper deals with comparative structural analysis ...
According to the advance of civil engineering and transportation, the tunnel tends to increase as a number and be longer as a scale. It is divided to underground and undersea tunnel by location, and is sorted into railway and road tunnel by transportation. Channel Tunnel is world’s longest undersea railway tunnel that reaches a length of 50.45 km (1). Great Britain is connected to France by it....
introduction: the process of wound healing sets in motion a complex and dynamic series of events, which includes the remodeling of the extracellular matrix degradation of matrix proteins, predominantly collagen fibers, mediated by matrix metalloproteinase (mmps). our aim was to demonstrate whether fibroblasts derived from various strains of human fetal foreskin (fs) and adult skin (as), when cu...
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