نتایج جستجو برای: the gpr instruments

تعداد نتایج: 16058315  

2015
Daniela De Benedetto Ruggiero Quarto Annamaria Castrignanò Domenico A. Palumbo

Over the last few years high-resolution geophysical techniques, in particular ground-penetrating radar (GPR), have been used in agricultural applications for assessing soil water content variation in a non-invasive way. However, the wide use of GPR is greatly limited by the data processing complexity. In this paper, a quantitative analysis of GPR data is proposed. The data were collected with 2...

2015
L. Sold M. Huss A. Eichler M. Schwikowski M. Hoelzle

The spatial representation of accumulation measurements is a major limitation for current glacier mass balance monitoring approaches. Here, we present a method for estimating annual accumulation rates on a temperate Alpine glacier based on the interpretation of internal reflection horizons (IRHs) in helicopter-borne ground-penetrating radar (GPR) data. For each individual GPR measurement, the s...

Journal: :The Journal of neuroscience : the official journal of the Society for Neuroscience 2011
Catherine Hofler Michael R Koelle

Proteins containing the G protein regulator (GPR) domain bind the major neural G protein Gα(o) in vitro. However, the biological functions of GPR proteins in neurons remain undefined, and based on the in vitro activities of GPR proteins it is unclear whether these proteins activate or inhibit G protein signaling in vivo. We found that the conserved GPR domain protein AGS-3 activates Gα(o) signa...

2016
Giovanni E. Ferreira Rodrigo G. P. Barreto Caroline C. Robinson Rodrigo D. M. Plentz Marcelo F. Silva

Objectives To systematically review randomized controlled trials that assessed the effects of Global Postural Reeducation (GPR) on patient-reported outcomes in conditions of the musculoskeletal system. Method An electronic search of MEDLINE (via PubMed), EMBASE, Cochrane CENTRAL, and SciELO was performed from their inception to June 2015. Randomized controlled trials that analyzed pain and pati...

Journal: :Signal Processing 2008
Thomas C. T. Chan Hing-Cheung So K. C. Ho

Ground penetrating radar (GPR) is a widely used sensor for land mine detection. However, GPR signal return is very susceptible to ground bounce and reflection of clutter objects, which makes the detection a difficult problem to date. In this paper, we propose to utilize two-sided linear prediction (LP) to model the background interference and then employ the residue energy to generate the test ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید چمران اهواز - دانشکده ادبیات و علوم انسانی 1389

methodology non-native participants in this study were sixty ba students majoring in english literature and teaching english as a foreign language at khayyam university of mashhad. they were senior students, between 21 to 24 years old, who had studied english for at least three and a half years and had passed several courses including grammar, reading, conversation, and writing. this was assum...

2011
Cecilia Vahlberg

Biological and chemical reactions involved in physiological processes are often complex and very sophisticated. Such processes can be mimicked in the laboratory to obtain important knowledge, valuable for the development of new diagnostic methods, drugs and biosensors. This thesis includes investigations of bio-functionalized surfaces that can be used as model systems to mimic naturally existin...

ژورنال: علوم زمین 2011

آب­های زیرسطحی، حفرات و ساختارهای مجزای دفن‌شده در ژرفاهای کم، به‌دلیل تفاوت آشکار در ویژگی‌های الکتریکی و الکترومغناطیسی با محیط دربرگیرنده خود، به‎خوبی توسط روش‎های مقاومت ویژه و GPR قابل آشکارسازی هستند. در این پژوهش، با در نظر گرفتن 3 نیمرخ...

2007
J. M. Kruger L. Jordan

Introduction: The thickness of the lunar regolith and potential for frozen water are important considerations for future lunar outposts. However, the thickness of the regolith is largely unknown and the presence of water ice has yet to be directly detected at or beneath the surface. A rapid and economical geophysical method to determine both the thickness of the lunar regolith and possibly iden...

ژورنال: :فیزیک زمین و فضا 2013
ابوالقاسم کامکار روحانی اسماعیل اسحقی علیرضا عرب امیری

روش رادار نفوذی به زمین (gpr) به منزلة یک روش غیرتخریبی به منظور آشکارسازی اهداف زیرسطحی واقع در عمق کم، براساس ارسال امواج الکترومغناطیسی به درون زمین و ثبت بازتاب های دریافت شده از امواج ارسالی، مورد استفاده قرار می گیرد. دانه بندی ذرات و وجود رُس مواد زیرسطحی به دلیل تغییراتی که در میزان رسانندگی و گذردهی الکتریکی ایجاد می کنند و در نتیجه، ایجاد تغییر نسبی در عمق نفوذ امواج gpr قابل تشخیص و ب...

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