Results 181 to 190 of about 2,165 (214)

Diagnosis of GLDAS LSM based aridity index and dryland identification

Journal of Environmental Management, 2013
The identification of dryland areas is crucial for guiding policy aimed at intervening in water-stressed areas and addressing the perennial livelihood or food insecurity of these areas. However, the prevailing aridity indices (such as UNEP aridity index) have methodological limitations that restrict their use in delineating drylands and may be ...
Ghanzanfari, S., Pande, S., Hashemy, M., Sonneveld, B.G.J.S.   +3 more
openaire   +2 more sources

Comparisons of WRF and GLDAS precipitation products in the Heihe river basin

2012 IEEE International Geoscience and Remote Sensing Symposium, 2012
As precipitation data being an essential forcing data to hydrological and land surface models, its quality has great impacts on simulation. For the absence of fine resolution and good quality precipitation data in the Heihe river basin (HRB), precipitation data from WRF and GLDAS are extensively used for model simulation in HRB.
Yuting Hou, Zhuotong Nan
openaire   +1 more source

Complexation of Molybdenum(VI) with GLDA at Different Ionic Strengths

Journal of Solution Chemistry, 2018
The interaction of the biodegradable ligand, l-glutamic acid N,N-diacetic acid tetrasodium salt (GLDA) with molybdenum(VI) was studied by determining stability constants at pH 6.00, T = 298.15 K, and ionic strength 0.0992 
Kavosh Majlesi, · Clemente Bretti, · Concetta De Stefano, · Kimia Majlesi, Silvio Sammartano, · Saleh Zeighaminezhad   +5 more
openaire   +2 more sources

GLDA-FP: Gaussian LDA Model for Forward Prediction

2018
In social networks, information propagation is affected by diversity factors. In this work, we study the formation of forward behavior, map into multidimensional driving mechanisms and apply the behavioral and structural features to forward prediction.
Yunpeng Xiao 0001, Liangyun Liu, Ming Xu 0008, Haohan Wang, Yanbing Liu 0004   +4 more
openaire   +1 more source

Reaction of GLDA with Calcite: Reaction Kinetics and Transport Study

SPE International Symposium on Oilfield Chemistry, 2011
Abstract Chelating agents have been used in the oil industry as iron control agents and scale removers, and recently as effective stand-alone stimulating fluids in matrix acidizing, especially for deep wells where using hydrochloric acid is restricted due its corrosion problems.
Ahmed I. Rabie, Mohamed A. Mahmoud, Hisham A. Nasr-El-Din   +2 more
openaire   +1 more source

Effects of GLDA, MGDA, and EDTA chelating ligands on Pb sorption by montmorillonite

Geoderma, 2020
Abstract In this study, the effects of the new biodegradable chelating ligands, i.e., methylglycinediacetic acid (MGDA) and L-glutamic acid-N,N-diacetic acid (GLDA), were compared with that of ethylenediaminetetraacetic acid (EDTA) on lead (Pb) sorption by montmorillonite (MMT) at equimolar Pb:ligand ratios.
Farzad Parsadoust, Mehran Shirvani, Hossein Shariatmadari, Mohammad Dinari   +3 more
openaire   +1 more source

GLDA: Parallel Gibbs Sampling for Latent Dirichlet Allocation on GPU

2016
With the development of the general computing ability of GPU, more and more algorithms are being run on GPU, to enjoy much higher speed. In this paper, we propose an approach that uniformly accelerate Gibbs Sampling for LDA (Latent Dirichlet Allocation) algorithm on GPU, which makes the data load to the cores of GPU evenly to avoid the idle waiting for
Pei Xue, Tao Li 0022, Kezhao Zhao, Qiankun Dong, Wenjing Ma   +4 more
openaire   +1 more source

Assessment of Water Storage Changes Using GRACE and GLDAS

Water Resources Management, 2020
Water crisis is one of the main global risks that has different impacts on the society. This work uses available data and tools to track water storage changes in Iran, where lack of observations limits hydroclimatological studies and thus causes disasters.
openaire   +1 more source

Stimulation of Carbonate Reservoirs Using GLDA (Chelating Agent) Solutions

Proceedings of Trinidad and Tobago Energy Resources Conference, 2010
Abstract The objective of matrix acidizing process is to create channels through the damaged zone in the near wellbore. Creating channels through the damaged zone yields a negative skin and improves the recovery in oil and gas reservoirs.
M. A. Mahmoud, H. A. Nasr-El-Din, C. A. De Wolf, J. N. LePage   +3 more
openaire   +1 more source

Stimulation of Seawater Injectors by GLDA (Glutamic-Di Acetic Acid)

SPE Drilling & Completion, 2016
Summary Seawater is injected to maintain the reservoir pressure that supports the oil production from carbonate and sandstone reservoirs. In certain regions, the seawater contains more than 4,000 ppm sulfate, and the formation contains more than 19,000 ppm calcium; this will cause calcium sulfate precipitation at the reservoir conditions.
Mohamed Mahmoud, K. Z. Abdelgawad, S. M. Elkatatny, A.. Akram, T.. Stanitzek   +4 more
openaire   +1 more source