نتایج جستجو برای: on line detectors

تعداد نتایج: 8583020  

2012
Urszula Sowa Tomasz Nowak Barbara Michalec Gabriela Mierzwińska Jan Swakoń Paweł Olko

The solid state active detectors, widely used for conventional radiotherapy, such as diamond detectors (DD) and diodes may be attractive tools also in dosimetry of therapeutic proton beams. Diodes are broadly applied in oncology clinics and routinely used for in-vivo dosimetry [1, 8]. These real-time detectors are rugged, relatively inexpensive and provide on-line readings, what allows for quic...

2010
Samuli Väyrynen

Silicon particle detectors are used in several applications and will clearly require better hardness against particle radiation in the future large scale experiments than can be provided today. To achieve this goal, more irradiation studies with defect generating bombarding particles are needed. Protons can be considered as important bombarding species, although neutrons and electrons are perha...

2007

This work describes preliminary test studies with a dual-headed SPECT system that utilizes a new generation of silicon double-sided strip detectors (DSSDs) (Figure 1) with a 1-mm bulk thickness and larger active area (60 × 60 mm) as compared to standard gamma-ray silicon detectors. Furthermore, major improvements in the ASIC design make this detector very suitable for low-energy imaging of smal...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده زبانهای خارجی 1389

چکیده امروزه آموزش الکترونیکی بخشی از آموزش در دانشگاهها و دیگر موسسات آموزشی شده است.به دلیل اینکه به چنین شیوه آموزشی بخصوص در کشورهای جهان سوم حداقل توجه شده است ؛ لذا این تحقیق بر آن شده تا دو گونه آموزشی اینترنتی(on-line) و کتابی(سنتی) را در مهارت خواندن و درک مطلب در دانشگاه پیام نور مورد ارزیابی و تحقیق قرار داده و به این سوال پاسخ دهد که کدام شیوه آموزشی، آموزش از طریق اینترنت و یا آم...

Background: Estimating dosimetric parameters for small fields under non-reference conditions leads to significant errors if done based on conventional protocols used for large fields in reference conditions. Hence, further correction factors have been introduced to take into account the influence of spectral quality changes when various detectors are used in non-reference conditions at differen...

2012
A Dobbs D Forrest J P Soler

The MICE experiment will provide the first measurement of ionisation cooling, a technique suitable for reducing the transverse emittance of a tertiary muon beam in a future neutrino factory accelerator facility. MICE is presently in the final stages of commissioning its beam line. The MICE luminosity monitor has proved an invaluable tool throughout this process, providing independent measuremen...

2009
Tomohiko AKUTA Hideo TAKAHASHI

A new principle of on-line crook measurement for long size rolling stock while running is devised, instead of customary off line static measurement. Rolled steel beams and plates aretransferred on roller tables generally accompanied with the motion of traverse and rotation. Therefore, the following three measuring methodes are described. (1) For the case of both traverse and rotation are neglig...

2009
Antoine Kouchner

Several projects are concentrating their efforts on opening the high energy neutrino window on the Universe with km-scale detectors. The detection principle relies on the observation, using photomultipliers, of the Cherenkov light emitted by charged leptons induced by neutrino interactions in the surrounding detector medium. In the Northern hemisphere, while the pioneering Baikal telescope, has...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان - دانشکده ادبیات و علوم انسانی 1390

educational researchers have provided evidence that teachers’ emotional intelligence has strong effects on various aspects of teaching and learning. yet, in the field of teaching english to speakers of other languages (tesol), inquiry into teachers’ emotional intelligence is nearly limited. given its documented powerful impact on teaching practices and student learning, it is critical to pursue...

Journal: :Optical Engineering 2011

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