Results 51 to 60 of about 107,558 (336)

Surface hydration‐induced damage in tight oil‐bearing sandy conglomerate reservoirs

Deep Underground Science and Engineering, EarlyView.
A series of techniques such as X‐ray diffraction, scanning electron microscopy, energy‐dispersive spectroscopy, conductivity tests, and infrared thermal imaging were used. The key findings are the identification of a two‐stage surface hydration process and the elucidation of the effects of various minerals and elements on the hydration process ...
Anbang Zhao, Shuheng Du, Yuan Zhang, Jinghong Hu, Bo Zhou, Yun Wei   +5 more
wiley   +1 more source

Normal background concentrations of contaminants in the soils of England : available data and data exploration [PDF]

, 2011
This draft report describes the completed Work Package 1 and 2 tasks of the Defra commissioned Science and Research Project SP1008 - Establishing data on normal/background levels of soil contamination in England.
Ander, E.L., Cave, M.R., Johnson, C.C., Palumbo-Roe, B.   +3 more
core  

Selenium and tellurium concentrations of Carboniferous British coals [PDF]

, 2019
The authors wish to thank Kier Group, the British Coal Utilisation Research Association (BCURA) and Uniper (E.On) for kindly providing coal samples.
Armstrong, Joseph, Bullock, Liam A., Feldmann, Joerg, Flores, Erico M. M., Henn, Alessandra S., Mello, Paola A., Mesko, Marcia F., Parnell, John   +7 more
core   +1 more source

Antibiotics in two municipal sewage treatment plants in Sri Lanka: Occurrence, consumption and removal efficiency

Emerging Contaminants, 2019
Most of the monitoring data on the occurrence of antibiotics in sewage treatment plants (STPs) have been reported from Europe, North America and some countries in Northeast Asia, while very limited data can be found in Southeast Asian countries.
Dilanka N.D. Samaraweera, Xin Liu, Guangcai Zhong, Tilak Priyadarshana, Riffat Naseem Malik, Gan Zhang, Mahdi Safaei Khorram, Zewen Zhu, Xianzhi Peng   +8 more
doaj   +1 more source

The impact of forced closure on proppant distribution of hydraulic fracturing in shale formations

Deep Underground Science and Engineering, EarlyView.
Research findings demonstrate that implementing forced closure within shale formations can remarkably mitigate proppant settlement, concurrently increasing the effective propped surface area from 29.74% to 38.68%. Abstract Forced closure is widely used in conventional oil and gas reservoirs to promote uniform proppant placement.
Tongxuan Gu, Hanyi Wang, Quan Gan, Shuang Zheng   +3 more
wiley   +1 more source

Contamination of surface waters by mining wastes in the Milluni Valley (Cordillera Real, Bolivia): Mineralogical and hydrological influences [PDF]

, 2008
This study is one of very few dealing with mining waste contamination in high altitude, tropical-latitude areas exploited during the last century. Geochemical, mineralogical and hydrological characterizations of potentially harmful elements (PHEs) in ...
Isaure, Marie-Pierre, Probst, Anne, Roulet, Marc, Salvarredy-Aranguren, Matias Miguel   +3 more
core   +3 more sources

Source, composition, and environmental implication of neutral carbohydrates in sediment cores of subtropical reservoirs, South China [PDF]

Biogeosciences, 2017
Neutral monosaccharides, algal organic matter (AOM), and carbon stable isotope ratios in three sediment cores of various trophic reservoirs in South China were determined by high-performance anion-exchange chromatography, Rock-Eval pyrolysis, and ...
D. Duan, D. Duan, D. Zhang, D. Zhang, Y. Yang, J. Wang, J. Chen, Y. Ran   +7 more
doaj   +1 more source

Ozone Formation at a Suburban Site in the Pearl River Delta Region, China: Role of Biogenic Volatile Organic Compounds

Atmosphere, 2023
Ozone (O3) is becoming an increasingly concerning air quality problem in China, and previous O3 control strategies focused primarily on reducing anthropogenic volatile organic compounds (AVOCs), while neglecting the role of biogenic VOCs (BVOCs) in O3 ...
Jun Wang, Yanli Zhang, Shaoxuan Xiao, Zhenfeng Wu, Xinming Wang   +4 more
doaj   +1 more source

Organic Geochemical Characterization and Exploration Prospects of Hydrocarbon Source Rocks in Nepal

Energy Science &Engineering, EarlyView.
It provides a more detailed introduction to the current situation of oil and gas exploration in Nepal, as well as the properties and distribution characteristics of source rocks. ABSTRACT This study aims to evaluate the hydrocarbon generation potential and exploration prospects of hydrocarbon source rocks in the Dailekh to Dang–Tansen area of Nepal ...
Guoqiang Zhang, Rui Wang, Yinglie Li, Xinhe Wu, Yanming Qu   +4 more
wiley   +1 more source

Transmission Characteristics and Predictive Model for Recent Epidemic Waves of COVID-19 Associated With OMICRON Variant in Major Cities in China

International Journal of Public Health, 2022
Objectives: Waves of epidemics associated with Omicron variant of Coronavirus Disease 2019 (COVID-19) in major cities in China this year have been controlled.
Yangcheng Zheng, Yangcheng Zheng, Yunpeng Wang   +2 more
doaj   +1 more source