نتایج جستجو برای: grace silica

تعداد نتایج: 41852  

2015
Dong Zhou Zhaofei Wan Yan Fan Juan Zhou Zuyi Yuan

OBJECTIVE The aims of this study are to evaluate the relationship between the Global Registry of Acute Coronary Events (GRACE) risk score and neutrophil to lymphocyte ratio (NLR) and to determine whether a combination of these factors improves the predictive value for long-term cardiovascular events in Chinese Han patients with acute coronary syndrome (ACS). METHODS In this prospective, obser...

2005
Isabella Velicogna John Wahr Edward Hanna Philippe Huybrechts

[1] We use twenty-two monthly GRACE (Gravity Recovery and Climate Experiment) gravity fields to recover nonsecular mass change in Greenland. The results show large seasonal variability. We compare with modeled precipitation, evaporation, and runoff derived from ERA40 (the 40-year ECMWF Re-Analysis of the global atmosphere). The model’s seasonal amplitude is controlled by runoff and agrees reaso...

ژورنال: :تحقیقات منابع آب ایران 0
اشکان فرخ نیا دانشجوی دکتری / گروه مهندسی سازه های آبی، دانشکده کشاورزی، دانشگاه تربیت مدرس سعید مرید استاد/ گروه مهندسی سازه های آبی، دانشکده کشاورزی، دانشگاه تربیت مدرس

برآورد مؤلفه های مختلف بیلان آب در مقیاس های مکانی بزرگ به دلیل عدم در اختیار بودن داده های مناسب، همواره با مشکلات فراوانی روبرو بوده است. در سال های اخیر با رشد فزاینده پایگاه های داده جهانی مبتنی بر برآوردهای ماهواره ای و همچنین افزایش توانایی های سخت افزاری و نرم افزاری در مدل سازی فرآیندهای پیچیده حاکم بر بیلان آب در سطح زمین، کوشش های زیادی به منظور استفاده مناسب از این ابزارهای نوین جهت ...

2006
John Wahr Sean Swenson Isabella Velicogna

[1] The GRACE satellite mission is mapping the Earth’s gravity field at monthly intervals. The solutions can be used to determine monthly changes in the distribution of water on land and in the ocean. Most GRACE studies to-date have focussed on producing maps of mass variability, with little discussion of the errors in those maps. Error estimates, though, are necessary if GRACE is to be used as...

2012
B R Scanlon L Longuevergne D Long

13 There is increasing interest in using GRACE (Gravity Recovery and Climate Experiment) 14 satellite data to remotely monitor groundwater storage variations; however, comparisons with 15 ground-based well data are limited but necessary to validate satellite data processing, 16 especially when the study area is close to or below the GRACE footprint. The Central Valley is a 17 heavily irrigated ...

2006
Sean Swenson Pat J.-F. Yeh John Wahr James Famiglietti

[1] This study presents the first direct comparison of terrestrial water storage estimates from the Gravity Recovery and Climate Experiment (GRACE) satellite mission to in situ hydrological observations. Monthly anomalies of total water storage derived from GRACE gravity fields are compared with combined soil moisture and groundwater measurements from a network of observing sites in Illinois. T...

Journal: :The Journal of the Egyptian Public Health Association 2010
Wael E Mahmoud Mahmoud M Hassanein Moustafa M Nour El-Din Sherif M Elbeltagy Mohamed A Sadaka

BACKGROUND Risk stratification in acute coronary syndrome (ACS) aims to identify those patients who might benefit prognostically from further investigation and treatment. In addition, risk stratification models have been used by health authorities and hospitals in quality management activities. AIM The present study aimed at validating the Thrombolysis In Myocardial Infarction (TIMI) and The ...

2016
Kieran J Rothnie Liam Smeeth Neil Pearce Emily Herrett Adam Timmis Harry Hemingway Jadwiga Wedzicha Jennifer K Quint

OBJECTIVE To assess the accuracy of Global Registry of Acute Coronary Events (GRACE) scores in predicting mortality at 6 months for people with chronic obstructive pulmonary disease (COPD) and to investigate how it might be improved. METHODS Data were obtained on 481 849 patients with acute coronary syndrome admitted to UK hospitals between January 2003 and June 2013 from the Myocardial Ischa...

Hamidreza Mehryar, Nasser Khalili, Omid Garkaz, Peyman Atabaki, Sahar Paryab, Shadi Gharibi,

Background: Chest pain is the most common reason for patients to be referred to the emergency department of hospitals. This study was performed to compare the GRACE and TIMI scores in predicting important cardiovascular events in patients. Methods: This descriptive-analytical study was performed on 862 cardiac patients who were referred to the emergency department of Taleghani Hospital in Urmi...

2013
L. Seoane G. Ramillien F. Frappart

Time series of regional 2× 2 Gravity Recovery and Climate Experiment (GRACE) solutions have been computed from 2003 to 2011 with a 10-day resolution by using an energy integral method over Australia (112 E–156 E; 44 S–10 S). This approach uses the dynamical orbit analysis of GRACE Level 1 measurements, and specially accurate along-track K-band range rate (KBRR) residuals with a 1 μm s−1 level o...

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