نتایج جستجو برای: سیستم تحت فشار pss
تعداد نتایج: 180667 فیلتر نتایج به سال:
این پایان نامه با هدف بکارگیری توانایی سوئیچ زنی بسیار بالای ادوات facts در جهت بهبود پایداری دینامیکی در سیستم های قدرت انجام گردید. در فصل سوم، مدل ماشین سنکرون مورد بررسی قرار گرفت و شبیه سازی آن در نرم افزار simulink صورت پذیرفت. همچنین مدل سیستم تحریک بررسی گردید و یک مدل پیشفاز-پسفاز برای کنترل کننده pss معرفی شد و این بخش به سیستم تحریک ژنراتور سنکرون اضافه گردید. در فصل چهارم، مدل سا...
© 2014 ETRI Journal, Volume 36, Number 3, June 2014 http://dx.doi.org/10.4218/etrij.14.0213.0458 Polarized spectrum sharing (PSS) exploits the spectrum opportunities in a polarized domain. However, when it comes to wideband environments PSS is impaired by the frequencydependent polarization mode dispersion (PMD); thus, the effective throughput of PSS drops. To combat the PMD effect, this work p...
هدف اصلی این تحقیق بررسی چالشهای کاربرد فناوری آبیاری تحت فشار از دیدگاه اعضای تعاونیهای تولید کشاورزی شهرستانهای اردبیل و بیله سوار بود. جامعة آماری این پژوهش شامل 900 کشاورز گندمکار شهرستان های اردبیل و بیله سوار بود که سیستم آبیاری تحت فشار را در اراضی خود در قالب تعاونی اجرا کرده بودند. حجم نمونه با استفاده از فرمول کوکران 130 نفر تعیین شد که از طریق نمونه گیری طبقهای با انتساب متناسب و...
In goldfish, growth hormone (GH) transiently rises 30 min after meals, returning to baseline at 1 h postmeal. Somatostatin (SRIF) is the major inhibitor of GH release. Three cDNAs encoding pre-pro-SRIF (PSS) have been previously cloned from goldfish brain: PSS-I, which encodes SRIF-14; PSS-II, which is potentially processed into gSRIF-28 that has [Glu(1),Tyr(7)(,)Gly(10)]SRIF-14 at the COOH ter...
OBJECTIVE To assess the health related quality of life of patients with primary Sjögren's Syndrome (PSS) in a large US sample. METHODS Questionnaires were mailed to 547 patients with a confirmed diagnosis of PSS (PhysR-PSS) and all active members of the Sjögren's Syndrome Foundation USA (SSF-PSS), half of whom identified a friend without PSS to also complete the survey. RESULTS 277 PhysR-PS...
While Product Service Systems (PSS) are not inherently sustainable, they may form part of the mix of innovations that contribute to the development of more sustainable futures. However, whether the current trajectory of PSS research, with its emphasis on universal frameworks and standardization adequately reflects and builds upon PSS diversity revealed by case study research may be questioned. ...
BACKGROUND A retrospective analysis of clinical data from primary Sjogren's syndrome (pSS) patients with lung cancer was conducted in order to guide further clinical work. METHODS From January 1993 to December 2010, 10 pSS patients with lung cancer were hospitalized at the Peking Union Medical College Hospital. One hundred and three pSS patients were recruited as the controls. Patients' clini...
In this study, we sought to understand the selective pressures shaping the Ig-producing cell repertoire in the parotid glands of primary Sjögren's syndrome (pSS) patients before and after rituximab treatment (RTX). In particular, we evaluated the role of potential N-glycosylation motifs acquired by somatic hypermutation (ac-Nglycs) within Ig H chain V region (IGHV) genes as alternative selectiv...
OBJECTIVES Postsystolic shortening (PSS) has been proposed as a marker of myocardial dysfunction. Percutaneous transluminal septal myocardial ablation (PTSMA) is an alternative therapy for patients with hypertrophic obstructive cardiomyopathy (HOCM) that results in sustained improvements in atrial structure and function. We investigated the effects of PTSMA on PSS in HOCM patients using speckle...
Primary Sjögren's syndrome (PSS) is rare in India. Clinically manifest renal disease in PSS is uncommon and is usually an autoimmune tubulointerstitial nephritis presenting with distal renal tubular acidosis (dRTA) or a urinary concentrating defect. Hypokalemic paralysis due to dRTA in PSS is rare but well documented in medical literature. Rhabdomyolysis as a consequence of hypokalemia in PSS i...
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