نتایج جستجو برای: combined source

تعداد نتایج: 778949  

Journal: :DEStech Transactions on Environment, Energy and Earth Sciences 2019

Journal: :مرتع و آبخیزداری 0
علی فضل الهی استادیار، دانشکده منابع طبیعی، دانشگاه گیلان، ایران. علی سلاجقه استاد، دانشکده منابع طبیعی، دانشگاه تهران، ایران. سادات فیض نیا استاد، دانشکده منابع طبیعی، دانشگاه تهران، ایران. حسن احمدی استاد، دانشکده منابع طبیعی، دانشگاه تهران، ایران.

sediment fingerprinting is a method for identifying sediment sources and determining the rate of contribution of each source. in this method, the natural tracer technology is used, that combined from samples collection, laboratory analyzing and statistical modeling. the natural tracers are measured in both the sources and suspended sediment to determine the rate of contribution each sources. th...

آخوندزاده , افشین , احسانی , علی , تاجیک, حسین , شکوهی ثابت جلالی , فرنود , پژوهی , محمدرضا , گندمی , حسن ,

  Received: 25 Aug, 2010 Accepted: 16 Oct, 2010   Abstract   Background & A ims : Mentha longifolia and cumin seed were used for long time as spices and in conventional medicine . T his study was undertaken in order to evaluate the chemical composition of essential oils of Mentha longifolia L. and cumin seed (dried seed of the herb Cuminum cyminum L.) and their antibacterial efficacy alone and ...

Introduction: The most important limitation of 5-aminolevulinic acid (5-ALA)-induced photodynamic therapy (PDT) is the efficacy of the cells in converting 5-ALA to protoporphyrin IX. The present study aimed to investigate the effectiveness of silver nanoparticles (AgNPs) with the photosensitivity at the surface plasmon resonance wavelength on 5-ALA-mediated PDT. Material and Methods: First of a...

Blind voice separation refers to retrieve a set of independent sources combined by an unknown destructive system. The proposed separation procedure is based on processing of the observed sources without having any information about the combinational model or statistics of the source signals. Also, the number of combined sources is usually predefined and it is difficult to estimate based on the ...

J. Li, J. Wen, J. Yin, Q. An, Q. Niu, X. Qin,

Background:  Hydrogen has been demonstrated can selectively reduce the hydroxyl, which is the main cause of ionizing radiation-induced damage. Amifostine (AM) is the only radioprotective drug approved by the U.S. Food and Drug Administration for use in radiotherapy. The purpose of the present study was to investigate the combined radio-protective effect of hydrogen rich water (HRW) and AM....

Journal: :international journal of smart electrical engineering 2014
negar mirkazemian ebrahim banaei

in this paper, a new circuit is proposed for step-up z-source inverter based on qzsi (quasi-z-source inverter). the proposed topology inherits all advantages of the conventional topology. the proposed topology in comparison with conventional topology reduces the st (shoot-through) duty cycle by over 25% at the same voltage boost factor. theoretical analysis of the proposed qzsi in the st and no...

Journal: :IEEE Trans. Circuits Syst. Video Techn. 1999
Haitao Zheng K. J. Ray Liu

A new approach of reliable image and video transmission over noisy channels is proposed. For subband decomposed image and video, combined source coding and channel modulation design can achieve high compression efficiency and preferable quality. Further performance gain is obtained by multiresolution modulation as well as a bit-remapping scheme that assigns efficient mapping from each source co...

Journal: :IEEE Trans. Communications 2003
Aria Nosratinia Jin Lu Behnaam Aazhang

Progressive image transmission is difficult in the presence of a noisy channel, mainly due to the propagation of errors during the decoding of a progressive bitstream. Excellent results for this problem are made possible through combined source-channel coding – a method that matches the channel code to the source operational rate-distortion as well as channel conditions. This paper focuses on t...

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