نتایج جستجو برای: window configuration

تعداد نتایج: 188777  

A. Antoniadis, J.G. Fantidis,

Background: A Boron Neutron Capture Therapy (BNCT) facility, based on a DT neutron generator, with the final goal to find out a potential, alternative, solution to existing BNCT treatment facilities which are based on nuclear reactors is examined. Materials and Methods: With the aim of the MCNP4B Monte Carlo code different beam-shaping assembly (BSA) configurations were considered. Lead was sel...

Introduction: In radionuclide imaging, object scatter is one of the major factors leading to image quality degradation. Therefore, the correction of scattered photons might have a great impact on improving the image quality. Regarding this, the present study aimed to determine the main and sub-energy windows for triple energy window (TEW) scatter correction method usin...

Journal: :Nano letters 2011
Silvia Albaladejo Juan José Sáenz Manuel I Marqués

Optical trapping and driving of small objects has become a topic of increasing interest in multidisciplinary sciences. We propose to use a chain made of metallic nanoparticles as a resonant light sail, attached by one end point to a transparent object and propelling it by the use of electromagnetic radiation. Driving forces exerted on the chain are theoretically studied as a function of radiati...

Journal: :Physical chemistry chemical physics : PCCP 2010
Didier Bégué Pierre Labéguerie Daisy Y Zhang-Negrerie Aggelos Avramopoulos Luis Serrano-Andrés Manthos G Papadopoulos

The near infrared (NIR) spectra of bis(ethylene-1,2-dithiolato)nickel, Ni(C(2)S(2)H(2))(2) are fully interpreted here by applying a method developed for efficient automatic computation of both the infrared wave numbers and the intensities. The employed procedure uses parallel variational multiple window configuration interaction wave functions, the so-named P_VMWCI(2) algorithm, which incorpora...

2001
Daniel E. Leaird Andrew M. Weiner

The direct space-to-time (DST) pulse shaping apparatus is investigated both theoretically and experimentally. The discussion shows how the operation of the DST pulse shaper may be understood in terms of the femtosecond response of a generalized spectrometer. A complete discussion of the advantages and tradeoffs of utilizing this pulse-shaping configuration is given, including the direct scaling...

Journal: :Journal of synchrotron radiation 2007
Milan Gembicky Shin Ichi Adachi Philip Coppens

A heat-load shutter capable of frequencies from one to several tens of kHz and window times from 10 micros up to 1 ms is described. In the current configuration the water-cooled shutter absorbs approximately 99% of the heat generated by the white beam. It has been successfully used for extended periods synchronized with a Jülich pulse-selector operating at 946 Hz. The temperature of the pulse-s...

2016
Isabel Piñeiro-Prado David Salinas-Torres Ramiro Ruiz-Rosas Emilia Morallón Diego Cazorla-Amorós

Supercapacitors are energy storage devices that offer a high power density and a low energy density in comparison with batteries. Their limited energy density can be overcome by using asymmetric configuration in mass electrodes, where each electrode works within their maximum available potential window, rendering the maximum voltage output of the system. Such asymmetric capacitors are optimized...

Journal: :نقش جهان - مطالعات نظری و فناوری های نوین معماری و شهرسازی 0
behrouz mohammad kari assistant professor, building physics, building and housing research center, tehran, iran rima fayaz associate professor (corresponding author), department of architecture and urbanism, university of art, karaj, iran ayda montaser koohsari m.sc. student, sustainable architecture, university of art, karaj, iran

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Journal: :iranian journal of nuclear medicine 2004
nasrollah jabbari hossein rajabi hassan firoozabadi fereidoon rastgoo nahid yaghoobi

introduction: scatter radiation is one of the major sources of error in nuclear medicine data processing. different methods of scatter correction have been introduced in order to improve the quality of data. however the best method is to avoid recording of scatter photons in acquisition. the only difference between scattered and non-scattered photons is the energy. pulse height analyzer is the ...

2013
Zoltan-Csaba Marton Ferenc Balint-Benczedi Oscar Martinez Mozos Dejan Pangercic Michael Beetz

In this paper we present an approach based on sceneor part-graphs for geometrically categorizing touching and occluded objects. We use additive RGBD feature descriptors and hashing of graph configuration parameters for describing the spatial arrangement of constituent parts. The presented experiments quantify that this method outperforms our earlier part-voting and sliding window classification...

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