Results 21 to 30 of about 405,708 (197)

Rare earth geochemistry of Arenig cherts from the Ballantrae Ophiolite and Leadhills Imbricate Zone, southern Scotland: implications for origin and significance to the Caledonian Orongeny [PDF]

, 1999
Rare earth element (REE) data from low to mid-Arenig cherts are used to test competing models for the early Ordovician evolution of the Laurentian margin in the northern British Isles.
Armstrong, H.A., Owen, A.W., Floyd, J.D.
core   +3 more sources

Research progress and prospect of pore structure representation and seepage law of continental shale oil reservoir [PDF]

, 2023
At present, China has encountered many problems and challenges in the exploration and development of continental shale oil. The mobility of shale oil is greatly affected by complex pore structure and poor seepage capacity, and restricts the efficient ...
WANG Xiaoming,CHEN Junbin,REN Dazhong
core   +1 more source

Construyendo nuestra red de empresarios [PDF]

, 2019
El Centro de Emprendimiento Continental no sólo ayuda a futuros emprendedores a materializar sus sueños, también se preocupa por los empresarios ya establecidos. A través de la Red Continental de Empresarios Continental, brinda múltiples beneficios a los
Continental
core   +1 more source

Vitrina de validación comercial [PDF]

, 2019
El Centro de Emprendimiento Continental ayuda a futuros emprendedores a constituir su propio emprendimiento y/o a potenciar el que ya tienen. Una parte importante de ese proceso es la validación comercial del producto o servicio. En este caso, la vitrina
Continental
core   +1 more source

Dolomite Formation Driven by the Synergy of Hydrothermal Activity, Biology, and Climate: A Case Study from the Lucaogou Formation in the Jimsar Sag

Applied Sciences
Typical saline lacustrine mixed sedimentary strata are developed in the Middle Permian Lucaogou Formation (P2l) in the Jimsar Sag, with frequent interbedding of mudstone, dolomitic mudstone, and argillaceous dolomite.
Wenren Zeng, Zhihuan Zhang, Borjigin Tenger, Cong Zhang, Ronghui Fang, Weikun Chen, Yuan Zhang, Zi Wang, Haohan Li   +8 more
doaj   +1 more source

Oil mobilization characteristic through gas exhaust and huff-and-puff synergistic effect in laminated shale： A case study of Qingshankou Formation in Gulong Sag， Songliao Basin

Youqi dizhi yu caishoulu
This paper takes three lithologies of shales， namely felsic shale， mixed shale， and clayey shale in the Qingshankou Formation in the Gulong Sag of the Songliao Basin as research objects， analyzes oil mobilization characteristics of the microscopic pore ...
FU Lanqing, CHEN Hongan, LI Binhui, LAN Yubo, CAO Sheng, LI Jiawei, DONG Dapeng, CHEN Pengyi   +7 more
doaj   +1 more source

In-situ hydrocarbon formation and accumulation mechanisms of micro- and nano-scale pore-fracture in Gulong shale, Songliao Basin, NE China

Petroleum Exploration and Development, 2023
By conducting experimental analyses, including thermal pyrolysis, micro-/nano-CT, argon-ion polishing field emission scanning electron microscopy (FE-SEM), confocal laser scanning microscopy (CLSM), and two-dimensional nuclear magnetic resonance (2D NMR),
Xiaojun WANG, Baowen CUI, Zihui FENG, Hongmei SHAO, Qiuli HUO, Bin ZHANG, Bo GAO, Huasen ZENG   +7 more
doaj   +1 more source

Tooth histotype and enameloid microstructure of Priohybodus arambourgi d'Erasmo, 1960 (Elasmobranchii: Hybodontiformes) from the Late Jurassic of northeastern Brazil

The Anatomical Record, EarlyView.
Abstract Sharks possess varied diets and different prey capture mechanisms. As a result, the group exhibits a significant diversity in dental morphology, also reflecting the internal structures of the teeth. Internal dental anatomy points to the existence of three histotypes in elasmobranch phylogeny: orthodont, osteodont, and pseudoosteodont ...
Kelly Roberta da Silva, Valéria Gallo, Estevan Eltink   +2 more
wiley   +1 more source

Discovery and genesis mechanism of high content diamondoids in the Gulong shale oil

Scientific Reports
Diamondoids are an important industrial material for biomedicine and equipment manufacturing. In addition to chemical synthesis methods used in industry, direct separation from petroleum is also a potential approach.
Xuefeng Bai, Zihui Feng, Xiaochang Zhang, Qiuli Huo, Wei Jin, Jing Sun, Huasen Zeng   +6 more
doaj   +1 more source

African Twist of Circular Economy: Insights, Policies and Recommendations

Business Strategy and the Environment, EarlyView.
ABSTRACT While the circular economy (CE) has gained traction, this paper argues that mainstream CE approaches risk being misaligned in the African context. Drawing on a mixed‐methods synthesis of empirical studies, policy documents and cross‐country examples, the study shows that Africa's CE transition is fragmented and uneven, leaving the continent at
Michael Odei Erdiaw‐Kwasie, Matthew Abunyewah, Amila Kasun Sampath Udage Kankanamge, Patrick Arhin, Kerstin Zander   +4 more
wiley   +1 more source