Results 51 to 60 of about 388 (168)

Application of geostatistical methods for reconstruction of lithological and mineralogical structure of uranium deposit by interpolating well data

Вестник КазНУ. Серия математика, механика, информатика, 2017
During the development of uranium deposits that use in-situ leaching extraction method, mineralogical and lithological structure of sub terrain media remains unknown and is limited to the data along the wells. In order to optimize the development process,
D. Y. Aizhulov, M. B. Kurmanseiit, M. S. Tungatarova   +2 more
doaj  

Environmental Contaminant Accumulation in Freshwater Turtles Inhabiting Three Rivers of the Permian Basin, New Mexico, USA

Environmental Toxicology, EarlyView.
ABSTRACT Freshwater turtles are valuable sentinels of aquatic systems due to their long lifespans and resilience in environments impacted by contaminants. The Permian Basin, dominated by the oil and gas sector, spans western Texas and southeastern New Mexico, USA, including the Pecos River and its tributaries, the Delaware and Black Rivers.
Ana G. G. Sapp, W. Gregory Cope, Christopher E. Moorman, Frank X. Weber, Ivana Mali   +4 more
wiley   +1 more source

Molecular insight into the expression of metal transporter genes in Chryseobacterium sp. PMSZPI isolated from uranium deposit.

PLoS ONE, 2019
Metal tolerant bacterium Chryseobacterium sp. PMSZPI previously isolated and characterized from uranium ore deposit was studied for elucidating the role of metal transporter genes belonging to the Cation Diffusion Facilitator (CDF), Root-Nodulation ...
Macmillan Nongkhlaw, Santa Ram Joshi
doaj   +1 more source

Integrated Alpha–Gamma Radiation Exposure From Natural Radionuclides in Cement and Gypsum Production: Implications for Occupational Lung Cancer Risk

Environmental Toxicology, EarlyView.
ABSTRACT Natural radionuclides in cement and gypsum production materials pose significant risks of occupational radiation exposure that are not well documented in Iraqi Kurdistan. This study quantifies alpha and gamma radiation levels from naturally occurring radioactive materials, specifically 222Rn, 238U, 232Th, and 40K, in cement and gypsum samples ...
Adil M. Hussien, Kardo O. Mamand, Hiwa M. Qadir, Berun N. Ghafoor, Goran H. Mohammad   +4 more
wiley   +1 more source

Hydrogeochemical and spectroscopic studies of radioactive materials in Ayrakan and Cheshmeh Shotori areas, northeastern Isfahan province

Journal of Economic Geology, 2012
Groundwaters hydrochemistry of Ayrakan and Cheshmeh Shotori areas and geochemistry of rare earth elements, indicate Ayrakan alkali granite as the origin of uranium and other dissolved elements in groundwaters of these areas.
Mostafa Esmaeili Vardanjani, Reza Shamsipour Dehkordi, Kaveh Pazand, Davoud Rahi   +3 more
doaj   +3 more sources

Mineralogical and Geochemical Characteristics of Uranium Ore from the Qiziqiao Formation of the Jinguanchong Uranium Deposit, Mingyuefeng Area, Eastern Hunan and Their Geological Significance

Donghua Ligong Daxue Xuebao. Ziran Kexue Ban
[Objective] This study aims to determine the composition and geochemical characteristics of uranium ores in the Qiziqiao Formation, and to investigate the uranium ore-forming mechanisms.
WANG Ke, GU Yong, YE Yongqin, LIU Tao, TAN Shuang, OUYANG Pingning   +5 more
doaj   +1 more source

Natural Radioactivity in Soil and Water from Likuyu Village in the Neighborhood of Mkuju Uranium Deposit

International Journal of Analytical Chemistry, 2013
The discovery of high concentration uranium deposit at Mkuju, southern part of Tanzania, has brought concern about the levels of natural radioactivity at villages in the neighborhood of the deposit.
Najat K. Mohammed, Mohamed S. Mazunga
doaj   +1 more source

Forces Behind South Australia's Unusual Structural Changes Since 1840

Australian Journal of Agricultural and Resource Economics, EarlyView.
ABSTRACT The agricultural sector's share of GDP in growing economies typically declines but, for a century from the early 1850s, Australia's did not. That trend is most evident for the former colony and now State of South Australia (SA). Moreover, that share for SA has been almost flat since 1980 as well, along with the agricultural sector's share of ...
Kym Anderson
wiley   +1 more source

Machine Learning Methods for Identifying Composition of Uranium Deposits in Kazakhstan

Applied Computer Systems, 2017
The paper explores geophysical methods of wells survey, as well as their role in the development of Kazakhstan’s uranium deposit mining efforts. An analysis of the existing methods for solving the problem of interpreting geophysical data using machine ...
Kuchin Yan, Grundspeņķis Jānis
doaj   +1 more source

A reappraisal of the Middle to Later Stone Age prehistory of Morocco Réévaluer la préhistoire du Maroc, du Middle Stone Age au Later Stone Age

Journal of the Royal Anthropological Institute, EarlyView.
Over the last 25 years, perceptions of the early prehistory of Northwest Africa have undergone radical changes due to new fieldwork projects and a corresponding growth in scientific interest in the region. Much of this work has been focused in Morocco, known for its extremely rich fossil and archaeological records in caves and rock shelters.
Nick Barton, Abdeljalil Bouzouggar, Stacy Carolin, Louise Humphrey   +3 more
wiley   +1 more source