نتایج جستجو برای: نمودار DSI

تعداد نتایج: 9129  

ژورنال: :پژوهش نفت 0
حمید نجارزاده دانشجو ملیحه سادات کاظمی هیئت علمی، دانشگاه فنی وحرفه ای محمد کمال قاسم العسکری هیئت علمی، دانشگاه صنعت نفت

هدف از این مطالعه، محاسبه سرعت امواج کشسان، تعیین مدول های کشسان و بررسی تأثیر تخلخل بر مدول های کشسان در سازندهای کنگان و دالان در میدان گازی پارس جنوبی است. در این پژوهش سرعت امواج تراکمی و برشی به ترتیب با استفاده از زمان سیر امواج تراکمی و برشی حاصل از ابزار تصویرگر صوتی- برشی دو قطبی (dsi) محاسبه گردیدند. مدول حجمی، مدول برشی، مدول یانگ، پارامتر لامه، نسبت پواسون و نسبت مدول حجمی به مدول ب...

Journal: :International journal of sports physiology and performance 2018
Paul Comfort Christopher Thomas Thomas Dos'Santos Paul A Jones Timothy J Suchomel John J McMahon

PURPOSE To determine the reliability and variability of the Dynamic Strength Index (DSI) calculated from squat-jump (SJ) vs countermovement-jump (CMJ) peak force (PF) and to compare DSI values between methods. METHODS Male youth soccer and rugby league players (N = 27; age 17.2 ± 0.7 y, height 173.9 ± 5.7 cm, body mass 71.1 ± 7.2 kg) performed 3 trials of the SJ, CMJ, and isometric midthigh p...

Journal: :The Science of the total environment 2010
Fushun Wang Yuanxiu Yu Congqiang Liu Baoli Wang Yuchun Wang Jin Guan Hangyuan Mei

Presently, the fluvial fluxes of Dissolved silicate (DSi) by many famous rivers in the world have been reported significantly decreased in the past several decades. DSi retention by river damming hence becomes a great concern. In this study, the impact on DSi retention and transport by cascade reservoirs in the Karst area were investigated. Based on the monitoring data for four seasons, budget ...

Journal: :The Journal of neuroscience : the official journal of the Society for Neuroscience 1998
W Morishita S A Kirov B E Alger

Depolarization-induced suppression of inhibition (DSI) is a transient reduction of GABAA receptor-mediated IPSCs that is mediated by a retrograde signal from principal cells to interneurons. Using whole-cell recordings, we tested the hypothesis that mGluRs are involved in the DSI process in hippocampal CA1, as has been proposed for cerebellar DSI. Group II mGluR agonists failed to affect either...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید چمران اهواز - دانشکده علوم زمین 1392

به دلیل متغییر و غیر قابل پیش بینی بودن خصوصیات پتروفیزیکی در مخازن کربناته، ارزیابی دقیق این خصوصیات از اهمیت بالایی برخوردار است. در این مطالعه با استفاده از نگار dsi، خصوصیات پتروفیزیکی سازند دالان در یکی از میادین جنوب غرب ایران بررسی گردید. به منظور بررسی چگونگی اثر گذاری داده-های زمان عبور استخراج شده بر مدل پتروفیزیکی، مدل سازی در دو مرحله صورت گرفت. کیفیت مدل ایجاد شده با اعمال نگارهای ...

Journal: :The Journal of neuroscience : the official journal of the Society for Neuroscience 2010
Rogier Min Guilherme Testa-Silva Tim S Heistek Cathrin B Canto Johannes C Lodder Tiziana Bisogno Vincenzo Di Marzo Arjen B Brussaard Nail Burnashev Huibert D Mansvelder

Endocannabinoids control hippocampal inhibitory synaptic transmission through activation of presynaptic CB(1) receptors. During depolarization-induced suppression of inhibition (DSI), endocannabinoids are synthesized upon postsynaptic depolarization. The endocannabinoid 2-arachidonoylglycerol (2-AG) may mediate hippocampal DSI. Currently, the best studied pathway for biosynthesis of 2-AG involv...

Journal: :Surgery 2010
Leonard R Henry Leah B Helou Nancy Pearl Solomon Robin S Howard Joyce Gurevich-Uvena George Coppit Alexander Stojadinovic

BACKGROUND The Dysphonia Severity Index (DSI) is an objective multiparametric acoustic calculation of vocal function; however, its changes after thyroidectomy have not yet been described. METHODS Patient-reported symptoms, as well as auditory perceptual, acoustic, and videolaryngostroboscopic (VLS) data, were collected prospectively before and after thyroidectomy. Voice outcomes (normal versu...

2017
Belinda Alvarez Patrick J. Frings Wim Clymans Guillaume Fontorbe Daniel J. Conley

We explore the distribution of sponges along dissolved silica (dSi) concentration gradients to test whether sponge assemblages are related to dSi and to assess the validity of fossil sponges as a palaeoecological tool for inferring dSi concentrations of the past oceans. We extracted sponge records from the publically available Global Biodiversity Information Facility (GBIF) database and linked ...

Journal: :Trends in amplification 2007
Gabrielle H Saunders Katharina V Echt

Dual sensory impairment (DSI) refers to the presence of both hearing loss and vision loss. The occurrence of DSI is particularly prevalent among the aging population, with studies showing between 9% and 21% of adults older than 70 years having some degree of DSI. Despite this, there is little direction regarding recommended clinical practice and rehabilitation of individuals with DSI. It is ass...

2014
Peter Osseward Uri Magaram

Depolarization-Induced Suppression of Inhibition (DSI) is effectively a mechanism for feedback-inhibition of inhibition. Wilson and Nicoll [4] showed that its effect is mediated through a retrograde endocannabinoid signal. Here, we produced a simple model for DSI which matched the effects and kinetics of DSI found in empirical data. We then explored a possible function for DSI through examining...

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