نتایج جستجو برای: lpf
تعداد نتایج: 437 فیلتر نتایج به سال:
The distribution of eight putative adhesins that are not encoded in the locus for enterocyte effacement (LEE) in 139 Shiga toxin-producing Escherichia coli (STEC) of different serotypes was investigated by PCR. Five of the adhesins (Iha, Efa1, LPF(O157/OI-141), LPF(O157/OI-154), and LPF(O113)) are encoded in regions corresponding to genomic O islands of E. coli EDL933, while the other three adh...
This paper studies the stability impact of alternate voltage controller’s (AVC) low-pass filter (LPF) in a wind turbine’s grid-connected source converter (VSC). A small-signal model is designed with grid-following synchronization control. More specifically, non-linear state-space was developed, including dynamics both inner and outer control loops converter, elements electrical system, as well ...
مسئله بهینه سازی خطی کاربردهای فراوانی دارد. اخیرا" روشهای نقطه درونی(ipms) و رده جدیدی از آنها بنام روشهای نقطه درونی اولیه- دوگان برای حل مسائل بهینه سازی خطی مورد توجه خاصی قرار گرفته است . در این پایان نامه با معرفی یک جستجوی جدید و بکارگیری روش تعقیب مسیر گام بلند (lpf) روی آن نشان می دهیم که پیچیدگی روش بهتر می شود.
The LISA Pathfinder (LPF) mission succeeded outstandingly in demonstrating key technological aspects of future space-borne gravitational-wave detectors, such as the Laser Interferometer Space Antenna (LISA). Specifically, LPF demonstrated with unprecedented sensitivity measurement relative acceleration two free-falling cubic test masses. Although most disruptive non-gravitational forces have be...
کنترل برداری مستقیم موتورهای القایی با جهت یابی شار استاتور، یکی از انواع روشهای کنترل برداری موتور القایی است که دارای مزایایی نسبت به سایر روشهاست. مهمترین ضعف این روش وجود انتگرال گیر خالص در تخمینگر شار استاتور است. زیرا وجود dc offset در جریان و ولتاژ اندازه گیری شده، باعث ایجاد خطا در شار تخمینی می شود. در این مقاله ابتدا مشکلات ناشی از dc offset در انتگرال گیرهای فوق بیان می شود. برای حل...
In this study, the fermentation characteristics of pine needles were investigated for first time and possibility using them as plant-derived feed additives was confirmed. Four types fermented needle prepared: (1) natural (CON); (2) Lactobacillus plantarum SK4315 (LPF); (3) Saccharomyces cerevisiae SK3587 (SCF); (4) co-culture (CCF). Fermentation lasted 48 h, samples taken at 4-h intervals until...
Laser peen forming (LPF) is a metal process that utilizes laser-induced mechanical shock waves to form desired shapes or modify bent structures. The present work focuses on the applicability of LPF Ti-6Al-4V sheets, identify an optimal parameter window and achieve bending without compromising surface quality within peened region. effect parameters, i.e. laser power density, overlap, type sacrif...
Cubic gold-platinum free-falling test masses (TMs) constitute the mirrors of future LISA and LISA-like interferometers for low-frequency gravitational wave detection in space. High-energy particles Galactic solar origin charge TMs thus induce spurious electrostatic magnetic forces that limit sensitivity these interferometers. Prelaunch Monte Carlo simulations TM charging were carried out Pathfi...
The mitogenic response of murine lymphocytes to the lymphocytosis-promoting factor of Bordetella pertussis has been shown to be due to activation of T cells. The selectivity of responsiveness to LPF with respect to the population of T cells which is stimllated, differs from that of PHA as well as Con A, and the surface receptors are different. A population of adherent cells, which does not appe...
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