نتایج جستجو برای: lpf
تعداد نتایج: 437 فیلتر نتایج به سال:
هدف: هدف از این مطالعه بررسی حضور ژنهای toxb، paa، lpf و iha و بررسی ارتباط آنها با اسهال، در جدایههایی از اشریشیا کلی انتروپاتوژنیک جدا شده از موارد اسهالی و افراد سالم است که فاقد دو فاکتور مهم eaea و bfpa هستند. مواد و روشها: در این مطالعه، 70 جدایۀ اشریشیا کلی انتروپاتوژنیک (eaea-، bfpa-) جمعآوری شده که از نظر سرولوژیک تأیید شده بود، بررسی شد. dna جدایهها به روش فنل- کلروفرم استخراج ش...
The mechanisms underlying the adherence of Escherichia coli O157:H7 and other enterohemorrhagic E. coli (EHEC) strains to intestinal epithelial cells are poorly understood. We have identified a chromosomal region (designated lpfABCC'DE) in EHEC O157:H7 containing six putative open reading frames that was found to be closely related to the long polar (LP) fimbria operon (lpf) of Salmonella enter...
A hybrid energy storage system (HESS) consisting of batteries and supercapacitors (SCs) is an effective approach to stability problems brought by renewable sources (RESs) in microgrids. This paper investigates the exchange between two devices (ESDs) caused low-pass filter (LPF), which leads oversized capacity HESSs. In addition, ESDs more loss Based on analysis power flows, this proposes improv...
AIMS Limited pulmonary function (LPF) related to obstructive disease and emphysema or due to significant lung toxicity resulting from chemotherapy regimens are frequent co-morbidity factors in lung cancer patients. Purpose of this study was to investigate the frequency of LPF in lung cancer and its impact of on surgical eligibility and postoperative outcome. MATERIALS AND METHODS We analyzed ...
Drying is commonly used for preservation and processing of litchi. However, its polysaccharide structure may be altered by the drying process, resulting in biological activity changes. Polysaccharides from fresh and dried litchi pulp (denoted as LPF and LPD, respectively) were isolated, investigated by GC-MS, GPC and UV/IR spectrum analysis and their antitumor and immunomodulatory activities we...
A novel ultra-wideband (UWB) bandpass filter (BPF) with a fractional bandwidth (FBW) of about % 110 is presented using the hybrid microstrip-defected-ground structure (DGS). The proposed filter was designed using a combination of hybrid microstrip-defected-ground structure lowpass filter (LPF) with typical quarter-wavelength short-circuited stubs highpass filter (HPF), followed by an optimizati...
Background. It is standard practice for laboratories to assess the cellular quality of expectorated sputum specimens to check that they originated from the lower respiratory tract. The presence of low numbers of squamous epithelial cells (SECs) and high numbers of polymorphonuclear (PMN) cells are regarded as indicative of a lower respiratory tract specimen. However, these quality ratings have ...
The apparatus of the Generalized Nets (GN) is applied to describe LPF-algorithm for modeling a conflict-free schedule packet crossbar switch. Throughput calculation results switch node with LPF- algorithm computer simulation family load traffic patterns are presented. Studies show that execution time depends on degree dimension O(n exp(4,7)). necessary computations have been implemented AVITOHO...
Using the enteropathogenic Escherichia coli (EPEC) genome sequence, we found that EPEC E2348/69 has an lpfABCDE gene cluster homologous (about 60% identical at the protein level) to the Salmonella long polar fimbria (LPF) operon. To determine whether this operon is essential for adherence, the lpfABCD(E2)(3) genes were deleted from EPEC strain E2348/69 by allelic exchange. Analysis of the resul...
This paper presents the fifth-order elliptic low-pass Gm-C filter (LPF) used in direct conversion receivers for Zigbee applications. The proposed LPF is designed based on rail-to-rail differential input voltage transconductance amplifier (OTA). The high linearity OTA is designed by combining two previous linearization techniques in [3] and [4]. The 5-order elliptic low-pass GmC filter has a tun...
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