نتایج جستجو برای: air channels
تعداد نتایج: 343206 فیلتر نتایج به سال:
اسانس های گیاهی با اثرات شناخته شده ای که روی آفات گذاشته اند، می توانند جایگزین مناسبی برای آفت کش های شیمیایی رایج باشند. در این تحقیق، اثرات سمیت تدخینی، تماسی و دورکنندگی اسانس صمغ، میوه و برگ بنهpistacia atlantica desf. subsp. kurdica (zohary) rech. f. روی حشرات کامل سوسک چهارنقطه ای حبوبات callosobruchus maculatus (fabricius, 1775) و شناسایی ترکیبات، اثرات سمیت تدخینی، تماسی و دورکنندگی ا...
Precise meanings of thermophysical processes taking place in air gaps have decisive importance composite cladding structure systems’ calculation and modeling. The climatic load conditions Kazakhstan can significantly affect the microclimate premises general. In this work, a review study is carried out to obtain relevant scientific literature on enclosing structures with under various conditions...
0017-9310/$ see front matter 2008 Elsevier Ltd. A doi:10.1016/j.ijheatmasstransfer.2008.09.025 * Corresponding author. Tel.: +1 585 475 6728; fax E-mail addresses: [email protected] (S.G. Kandlik [email protected] (W.E. Domigan), [email protected] t.edu (M.W. Benedict). Uniform flow distribution is critical to obtaining high performance in many heat and mass transfer devices. It also plays an importan...
The problem of retrieving images from a database is considered. In particular, we retrieve images belonging to one of the following six categories: 1) commercial planes in land, 2) commercial planes in air, 3) war planes in land, 4) war planes in air, 5) small aircraft in land, and 6) small aircraft in the air. During training, a wavelet-based description of each image is first calculated using...
The return link performance of conventional civil DVB-RCS transmission technology limits its direct application to air-borne satellite video transmission system. This paper studies the novel emergent DVB-RCS return link technique based on introducing adaptive parallel processing to the conventional civil DVB-RCS return link. Simulation results demonstrate that the proposed return link transmiss...
A dropshaft is an energy dissipator connecting two channels with different invert elevations. Detailed air-water flow and acoustic measurements were conducted in a prototype dropshaft under controlled flow conditions, and complemented by a 1:3.1 scale model study. Experimental observations showed three flow regimes with distinct acoustic signatures. Strong flow aeration was recorded in two flow...
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