نتایج جستجو برای: dvr

تعداد نتایج: 765  

2006
Tao Huang John W. Rudnicki

Deeply buried groundwater, such as brine, is an important industrial raw material with high economic value. Because brine frequently exists under higher temperature and pressure, the quantitative prediction of its seepage field is very difficult. Here we study the migration of deeply buried groundwater by using a numerical simulation based on laboratory test results. In particular, we express t...

ژورنال: :تحقیقات نوین در برق 0
روشنک رضایی پور roshanak rezaeipour المیرا کاظمی نیا elmira kazeminia

در این مقاله، روش سیگنال مرجع، جهت کنترل جبران کننده دینامیکی ولتاژدر حوزه زمان به منظور رفع مشکلات کیفیت توان پیشنهاد گردیده است. نظر به قابلیت به عنوان یکی از ادوات بهبود کیفیت توان در شبکه های توزیع، روش پیشنهادی با استفاده از تحلیل حوزه زمان سیگنال مرجع،  می تواند با داشتن منبع ذخیره کننده انرژی مشکلات متعدد کیفیت توان از قبیل بیشبود ولتاژ، کمبود ولتاژ و فلیکر را برطرف نماید. کارایی این روش...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه ارومیه - دانشکده فنی 1391

امروزه یکی از مهم ترین مسائل صنعت برق مشکلات کیفیت توان برای بارهای حساس است، که این به دلیل استفاده زیاد از ادوات الکتریکی و الکترونیکی پیشرفته مانند کامپیوترها و کنترل کننده های قابل برنامه ریزی است. استفاده از چنین تجهیزاتی غالباً نیاز به منبع انرژی با کیفیت توان بالا دارد. کمبود و بیشبود آنی ولتاژ معمولاً بیش از هر پدیده کیفیت توان رخ می‎دهد و مشکل ایجاد می کند، که به دلایل مختلفی از جمله اثر...

Journal: :Jornal de Assistência Farmacêutica e Farmacoeconomia 2023

Introdução: Com a criação quatro anos da CONITEC houve uma explosão de publicação estudos dados vida real (DVR) no Brasil, considerando crescente demanda agência por evidências (EVR). No entanto, há pouca análise sobre o tipo sendo solicitadas e as alternativas fontes ou soluções empregadas nas submissões para CONITEC. O objetivo deste estudo foi examinar os relatórios avaliação tecnologias em ...

In this paper, a combination of simulated annealing (SA) and intelligent water drops (IWD) algorithm is used to solve the nonlinear/complex problem of simultaneous reconfiguration with optimal allocation (size and location) of wind turbine (WT) as a distributed generation (DG) and dynamic voltage restorer (DVR) as a distributed flexible AC transmission systems (DFACT) unit in a distribution sys...

The Dynamic Voltage Restorer (DVR) is a commercially available, popular device to eliminate voltage sags and swells in the distribution lines. Its basic function is to inject the voltage difference (difference between the pre-sag and sag voltage) to the power line and maintains the pre-sag voltage condition in the load side. The efficiency of the DVR depends on the performance of the efficiency...

Journal: :American journal of nuclear medicine and molecular imaging 2017
Ikuo Odano Andrea Varrone Tetsuo Hosoya Kazuya Sakaguchi Balázs Gulyás Parasuraman Padmanabhan Krishna Kanta Ghosh Chang-Tong Yang Ilonka Guenther Zhimin Wang Raymond Serrano Nevil Ghislain Chimon Christer Halldin

The aim of this study on dopamine transporter binding by [18F]FE-PE2I and PET was to describe an image-derived approach using reference tissue models: the Logan DVR approach and simplified reference tissue model (SRTM), the features of which were simple to operate and precise in the measurements. Using the approach, the authors sought to obtain binding images and parameters. [18F]FE-PE2I and dy...

2015
Yoshio Misawa Arata Muraoka Shin-ichi Ohki Kei Aizawa Koji Kawahito Tsutomu Saito Hirotaka Sato Ippei Takazawa Soki Kurumisawa Hirohiko Akutsu Akira Sugaya

BACKGROUND The purpose of this study was to evaluate retrospectively the clinical performance of the Bicarbon valve (Sorin Biomedica Cardio, Saluggia, Italy) implanted at our center in Japan. METHODS Between January 1997 and December 2011, 415 patients in our institution were implanted with the Bicarbon valve. Nine of these recipients were excluded from the study because they had already unde...

Journal: :Journal of nuclear medicine : official publication, Society of Nuclear Medicine 2015
Howard J Huang Warren Isakow Derek E Byers Jacquelyn T Engle Elizabeth A Griffin Debra Kemp Steven L Brody Robert J Gropler J Philip Miller Wenhua Chu Dong Zhou Richard A Pierce Mario Castro Robert H Mach Delphine L Chen

UNLABELLED Inducible nitric oxide synthase (iNOS) activity increases in acute and chronic inflammatory lung diseases. Imaging iNOS expression may be useful as an inflammation biomarker for monitoring lung disease activity. We developed a novel tracer for PET that binds to iNOS in vivo, (18)F-NOS. In this study, we tested whether (18)F-NOS could quantify iNOS expression from endotoxin-induced lu...

Journal: :Journal of nuclear medicine : official publication, Society of Nuclear Medicine 2003
Ralph Buchert Rainer Thomasius Bruno Nebeling Kay Petersen Jost Obrocki Lars Jenicke Florian Wilke Lutz Wartberg Pavlina Zapletalova Malte Clausen

UNLABELLED Alterations of the serotonergic system due to ecstasy consumption have been extensively documented in recent literature. However, reversibility of these neurotoxic effects still remains unclear. To address this question, PET was performed using the serotonin transporter (SERT) ligand (11)C-(+)-McN5652 in a total of 117 subjects subdivided into 4 groups: actual ecstasy users (n = 30),...

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