نتایج جستجو برای: particularly hydrodynamic parameters including permeability and storage troch et al
تعداد نتایج: 17180931 فیلتر نتایج به سال:
انگور از جمله مهمترین محصولات باغی است که در ایران سطح زیر کشت وسیعی داشته و بخش عمده ای از آن به صورت تازه خوری مصرف می شود. ازدست دهی آب و پوسیدگی های قارچی از مهمترین عوامل محدود کننده عمر انبارمانی میوه انگور هستند. ازدست دهی آب باعث نرم شدن و چروکیدگی حبه ها و به دنبال آن افزایش فعالیت آنزیم ی باعث قهوه ای شدن چوب خوشه می شود، همچنین پوسیدگی های قارچی نیز عامل مهمی در کاهش عمرانبارمانی خوش...
Extended abstract 1. Introduction Soil erosion is a major environmental threat worldwide. This three-stage process including detachment, transportation and sedimentation of soil particle by runoff affects natural and agricultural areas of Iran. Soil erosion has many off-site and on-site effects such as sediment deposition in the lake of dam and channels, transportation of nutrients and contam...
asymmetric membranes are widely used in many industrial membrane separation processes. the major advantage of membrane filtration over the conventional process is its ability to remove a wider spectrum of particles without using any chemicals. hollow fiber configuration offer many advantages over flat-sheet or tubular membranes. the spinning process of hollow fiber may look simple, yet it is te...
In this paper the effect of tail form on maneuverability of autonomous underwater vehicle is investigated. In the beginning, tail form is defined using a mathematical function dependent on two parameters including length of the tail and its cone angle. Then the effect of these two parameters on the hydrodynamic coefficients and maneuverability is investigated respectively. Hydrodynamic damping ...
A fast-growing theoretical literature on the political economy of reform has provided a sizable collection of models that have deepened our understanding concerning how distributional conflict manifests itself in the political process and can prevent efficiency-enhancing economic reform from taking place (see e.g., Allan Drazen [2000 Ch. 10, 13] for an insightful review). Unfortunately, systema...
9 Country Comparisons of Human Stroke Research Since 2001 A Bibliometric Study Kjell Asplund, MD; Marie Eriksson, PhD; Olle Persson, PhD (Stroke. 2012;43:830-837.)
Comparative Performance of Multi-view Stereoscopic and Mammographic Display Modalities for Breast Lesion Detection by Lincoln Jon Webb Medical Physics Graduate Program Duke University Date:_______________________ Approved: ___________________________ Ehsan Samei, Supervisor ___________________________ Joseph Lo ___________________________ Sua Yoo An abstract of a thesis submitted in partial ful...
substituted BiFeO3 epitaxial thin films at morphotropic phase boundaries Daisuke Kan, Ching-Jung Cheng, Valanoor Nagarajan, and Ichiro Takeuchi Department of Materials Science and Engineering, University of Maryland, College Park, Maryland 20742, USA Institute for Chemical Research, Kyoto University, Gokasyo Uji, Kyoto 611-0011, Japan School of Materials Science and Engineering, University of N...
We consider re-keying protocols for secure multicasting in a dynamic multicast group with a center. There is a variety of diierent scenarios using multicast, presenting a wide range of eeciency requirements with respect to several parameters. We give an upper bound on the tradeoo between storage and communication parameters. In particular , we suggest an improvement of the schemes by Wallner et...
Recently, Baghery et al. [1, 2] presented some attacks on two RFID protocols, namely Yoon and Jung et al. protocols, and proposed the improved version of them. However, in this note, we show that the improved version of the Jung et al. protocol suffers from desynchronization attack and the improved version of the Yoon's protocol suffers from secret disclosure attack. The succe...
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