Results 201 to 210 of about 86,679 (309)

Presence of micro-mesoplastics in beaches and sediments of São Francisco do Sul (Brazil). [PDF]

Environ Monit Assess
Lopes-Ricardo ES, Martins AO, Rossa UB, Ribeiro EAW, Prado AR, Gomes EN, Radetski CM.   +6 more
europepmc   +1 more source

Intramolecular Matere Bonds in Isostructural Rubidium (18‐Crown‐6) Pertechnetate and Perrhenate Dimers

European Journal of Inorganic Chemistry, EarlyView.
Two rubidium cations that are not fully encapsulated by 18‐crown‐6 are bridged by two pertechnetate units to form a dimer. These two pertechnetate units are nearly linearly aligned to each other to form Matere bonds (MaBs), a type of noncovalent σ‐hole interaction.
Clarence Yong, Sergi Burguera, Dennis Grödler, Christoph Lenting, Hakim Ibrahim, Mathias S. Wickleder, Antonio Frontera, Erik Strub   +7 more
wiley   +1 more source

Heavy metal contamination in sediments of the Sematan-Serayan River, Sarawak: Assessment of pollution indices and environmental risk implications. [PDF]

Environ Monit Assess
Idrus FA, Ding VU.
europepmc   +1 more source

Measurement of In Situ Acoustic Properties for the ONR Geoclutter Program, Annual Report, Geoclutter Program [PDF]

, 2005
Fonseca, Luciano E., Kraft, Barbara J., Mayer, Larry A.   +2 more
core   +1 more source

Jet Flow Field Analysis of Convergent‐Divergent Nozzle for Hydraulic Perforation for Natural Gas Hydrates

Energy Science &Engineering, EarlyView.
Combining the nozzle structure and wellbore size of the second natural gas hydrate trial production, the CFD is employed to analyze the internal and external flow fields of convergent–divergent cavitation nozzle. Analyzing the influence of various structural parameters of the nozzle on its jet performance, and the nozzle configuration with optimal jet ...
Wang Yingsheng, Yu Yanjiang, Shen Kaixiang, Zhou Jiawei, Zhang Kewei, Zeng Jing   +5 more
wiley   +1 more source

Sinking Together? Settling Behavior of Microplastics in the Presence of Fine Sediments. [PDF]

Environ Sci Technol
Ruiz-Gonzalez V, Defontaine S, Jalón-Rojas I.   +2 more
europepmc   +1 more source

Design and Experimental Study of Pressure Maintenance and Temperature Control System for Hydrate Pressure Core Processing Device

Energy Science &Engineering, EarlyView.
This paper presents a hydrate pressure core processing device integrated with a high‐precision active control system to perform nondestructive transfer, cutting, and analysis. To address the limitations of slow dynamic response and high thermal inertia in traditional passive systems, a differentiated control scheme is implemented.
Liwen Nan, Jiawang Chen, Qiaoling Gao, Yingjie Liu   +3 more
wiley   +1 more source

Long-term history of continental weathering and particle transport to the sea. [PDF]

Proc Natl Acad Sci U S A
Canfield DE, Zhang S, Mitchell RN, Wang X, Naemi A, Spencer CJ, Zhang P.   +6 more
europepmc   +1 more source

Spatial Variations in Methane Content and Their Main Controlling Factors of the Deep‐Buried Coalbed in the Nalinhe–Hengshan Area, Ordos Basin

Energy Science &Engineering, EarlyView.
Ash yield is the primary geological factor controlling the spatial variations in the total gas content of the deep‐buried coalbed methane in the Nalinhe‐Hengshan area, Ordos Basin. However, porosity dominates the differential enrichment of the free gas content of the deep‐buried coalbed methane in the Nalinhe‐Hengshan area, Ordos Basin.
Shi Yunhe, Wang Kangle, Wang Huaichang, Wang Yufei, Zhang Hui, Cao Jingjing, Yin Liangliang, Hu Xinyou, Liang Chao, Liu Mina   +9 more
wiley   +1 more source

Geochemical fractionation and environmental risk assessment of potentially toxic elements (Cu, Zn, Pb, Ni, Cr, Ba, Mn) in Tokaj vineyard soils, Hungary. [PDF]

Environ Geochem Health
Pham NTH, Kushnov I, Farsang A, Raucsik B, Tobak Z, Kovács G, Babcsányi I.   +6 more
europepmc   +1 more source