نتایج جستجو برای: شاخص ept

تعداد نتایج: 75296  

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2011
Brittany C Westlake M Kyle Brennaman Javier J Concepcion Jared J Paul Stephanie E Bettis Shaun D Hampton Stephen A Miller Natalia V Lebedeva Malcolm D E Forbes Andrew M Moran Thomas J Meyer John M Papanikolas

The simultaneous, concerted transfer of electrons and protons--electron-proton transfer (EPT)--is an important mechanism utilized in chemistry and biology to avoid high energy intermediates. There are many examples of thermally activated EPT in ground-state reactions and in excited states following photoexcitation and thermal relaxation. Here we report application of ultrafast excitation with a...

2015
R. Edward DeWalt Eric J. South

Extensive sampling for aquatic insects was conducted in the orders Ephemeroptera (mayflies), Plecoptera (stoneflies), and Trichoptera (caddisflies) (EPT) of Isle Royale National Park (ISRO), Michigan, United States of America, during summer 2013. The island was ice covered until 8,000 to 10,000 years ago and is isolated by 22-70 km distance from the mainland. Two hypotheses were examined: that ...

2015
Tukezban Huseynova Mariko Mita Christine Carole C Corpuz Yuko Sotoyama Minoru Tomita

PURPOSE To evaluate the effects of the different fragmentation patterns for the lens nucleus in terms of the effective phacoemulsification time (EPT) and power. SETTING Shinagawa LASIK Center, Tokyo, Japan. DESIGN Comparison study. METHODS Seventy-one eyes of 71 patients had preoperative lens opacity grading based on the Emery-Little Classification (Grade 1 and Grade 2). Eyes underwent fe...

2010
Eunjung Lee Katherine D. Henderson Christina A. Clarke Dee West F. Marshall Dennis Deapen Leslie Bernstein Giske Ursin

ownloade kground: Although it is well established that combined estrogen-progestin therapy (EPT) increases cancer risk, questions remain regarding the effect of different formulations of hormones, whether ceromen are at particularly high risk, and whether risk varies by tumor subtype. thods: We investigated hormone therapy (HT) use in relation to breast cancer risk in the California rs Study co...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علوم کشاورزی و منابع طبیعی گرگان - دانشکده منابع طبیعی گرگان 1391

امروزه، در مطالعات تعیین کیفیت آب، بررسی حضور بزرگ بی مهرگان کفزی به عنوان شاخص های مکمل برای روش های شیمیاییِ تشخیص آلودگی ها شناخته شده است، در این پژوهش، دمای هوا، دمای آب و میزان اکسیژن محلول آب رودخانه به همراه عوامل فیزیوگرافی و هیدرولوژیک اندازه گیری شدند. نمونه ها توسط دستگاه سوربر (30×30 سانتی متر و چشمه تور 200 میکرون) در 7 ایستگاه و 3 تکرار از تیرماه سال 1390 تا آذرماه 1390 به صورت ما...

2015
Sukumar Vellakkal Vikram Patel Pallab Kumar Maulik

INTRODUCTION Lack of access to empirically-supported psychological treatments (EPT) that are contextually appropriate and feasible to deliver by non-specialist health workers (referred to as 'counsellors') are major barrier for the treatment of mental health problems in resource poor countries. To address this barrier, the 'Program for Effective Mental Health Interventions in Under-resourced He...

Journal: :Discrete Mathematics 1985
Maciej M. Syslo

Let T = (V(T), E(T)) be a tree and B = {Pi} denote a collection of non-trivial (i.e., of length at least 1) simple paths in T, where a path P= (v,, u2, . . . , Q) is considered in the sequel as the collection {{uJ, {Q}, . . . ,{z)J, {u,, u2}, {u2, I+}, _ . . , {w,-,, Q}}. The intersection graph 0(S, 9) of 9 over set S has vertices which correspond to the paths in 9 and two vertices uk and U! ar...

2009
S. To Y. H. Zhu W. B. Lee X. M. Liu Y. B. Jiang

Effects of static electropulsing on microstructure and elongation of the ZA 22 alloy were studied by using scanning electron microscopy and transmission electron microscopy techniques. It was found that the current density of electropulsing treatment (EPT) was one of the factors that influenced microstructural changes and dislocation structure in the EPT alloy. The identity of the microstructur...

2014
BEN-BIN CHEN HUA-CHING CHEN DONG-HUI GUO

The enhanced parameters tuning (EPT) algorithm is applied to adjust the parameters of 802.11e, i.e. arbitration inter frame space (AIFS), Contention window minimum (CWmin) and Contention window maximum (CWmax). The EPT tuning algorithm is proposed with the simple and effective adjustment in the priority combinations strategy to achieve the high quality of service (QoS). The internal competition...

2004
Peter Hazelton

Analysis of a single kick sample from a 2 order stream in Guilford, NY of known water quality showed slight variation among three 100 fixed-count subsamples in calculating EPT Richness at family and genus level of taxonomic resolution. EPT (Ephemeroptera, Plecoptera and Trichoptera) richness of one subsample varied enough to assign the site to a water quality level below other subsamples when c...

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