نتایج جستجو برای: sediment trap
تعداد نتایج: 64011 فیلتر نتایج به سال:
حدت استافیلوکوکوس اورئوس اساساً توسط پروتئینهای مرتبط با دیوارهی سلولی و ترشح توکسینها تعیین میگردد، که بیان آنها تا حد زیادی توسط سیستمهای تنظیمی دو جزئی (TCRSs) مثل سیستمهای تنظیم ژنی فرعی (agr) و RAP-TRAP تنظیم میشود. تاکنون چهار واریانت آللی از agr (agr I-IV) و trap (trap 1-4) شناسایی شده است. برخی از گزارشها اظهار داشت...
The behavior of ions in a Paul trap has been investigated using numerical solution of the set of Mathieus differential equations. Afterwards, the trajectories of two typical ions such as H+ and 208Pb+ in the trap have been obtained using the fourth-order Runge-Kutta method. For specific dimensions of a Paul trap and a given frequency, the stability regions for separation of H+ and 2H+ ions hav...
One of the most important pest in the Oak forest of Kurdistan province is Oak leaf roller moth, Tortrix viridana L. (Lep.: Tortricidae). Use of pheromone trap is one of the suitable methods for monitoring and controlling of the pest. In this work, three main factors which affect the efficiency of traps including trap type, pheromone dose and installation height trap were studied. Four types of ...
Unlined pressure tunnels in sound rock, combined with pressurized sand traps at the downstream end, allow for low-cost construction of hydropower tunnel systems. This design concept is utilized plants across world. Currently, many such power are being upgraded higher installed capacity, which may result challenges trap efficiency. A physical scale model test, accompanied by 3D CFD simulations a...
Silting is the main factor limiting ability to perform tasks that small reservoirs are intended for. Therefore, change in sediment trap efficiency was studied for a shallow reservoir, Krempna, which, due high silting intensity, desilted twice (2005, 2018). Siltation measurements were performed two periods (1987–2005, 2006–2018) after reservoir desludged. It found sediments composed of fine-frac...
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