نتایج جستجو برای: repeated loads
تعداد نتایج: 148796 فیلتر نتایج به سال:
Repeated trauma to the radial head may be one of the causative factors in the genesis of osteochondritis dissecans of the capitellum. We measured the force, contact area and pressure across the radiocapitellar articulation of the elbow before and after radial shortening osteotomy in five fresh-frozen cadaver upper limbs with loads of 45, 90 and 135 N, respectively. Measurements were made on pre...
Nitrogen (N2) fixation is a major source of available N in ecosystems that receive low amounts of atmospheric N deposition. In boreal forest and subarctic tundra, the feather moss Hylocomium splendens is colonized by N2 fixing cyanobacteria that could contribute fundamentally to increase the N pool in these ecosystems. However, N2 fixation in mosses is inhibited by N input. Although this has be...
The growing demand for the application of jacket platforms in deep water requires more attention on assessment structural reliability. This paper is devoted to dynamic reliability analysis subjected random wave loads with Monte-Carlo simulation (MCS), which a sample size order magnitude 104 105 repeated time–history analyses required small failure probability problems, and duration time up thre...
There are various benefits to ultra-high-performance fiber-reinforced concrete (UHPFRC). However, using a lot of cement in this type has severe disadvantage since it causes pollution and several environmental concerns. Therefore, another that achieves the same superior properties as UHPFRC while less mixture should be considered. This research examined replacing with fly ash produce environme...
Continuously Heated Greenhouses: A production or retail greenhouse with a constantly maintained temperature of 50 degrees F or more during winter months. Such greenhouse must also have a maintenance attendant on duty at all times or an adequate temperature alarm system to provide warning in the event of a heating system failure. In addition, the greenhouse roof material must have a thermal resi...
1 The aim of the present study was to investigate the effects of motivating and 2 oudeterous (neither motivating nor demotivating) synchronous music on 400-metre 3 sprint performance while controlling for the potential confound of pre-performance 4 mood. A panel of volunteer Caucasian males (n = 20; mean age = 20.5, s = 1.2 years) 5 rated the motivational qualities of 32 musical selections usin...
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