Results 41 to 50 of about 35,817 (223)

Influence of temperature and time on the Eu3+ reaction with synthetic Na-Mica-n (n = 2 and 4) [PDF]

, 2016
Bentonite is accepted as the best clay material for the engineered barrier of Deep Geological Repositories (DGRs). The performance of clay as the main component of the engineered barrier in the DGR has been intensively studied and the structure of the ...
Alba Carranza, María Dolores, Cota, Agustín, García Jiménez, María José, Osuna, Francisco J., Pavón González, Esperanza   +4 more
core   +1 more source

Revisiting the synthesis of dimethyl carbonate from methanol and carbon dioxide

The Canadian Journal of Chemical Engineering, EarlyView.
Abstract The process for producing dimethyl carbonate (DMC) from carbon dioxide (CO2) and methanol is explored in this article. It provides an overview of the thermodynamics involved in DMC synthesis, discussing the challenges and potential solutions. The article highlights the reported use of catalysts and dehydrating agents to improve DMC yield and ...
Diego Alexander Santos Araque, Niloofar Mozaffari, Louis Fradette, Serge Kaliaguine   +3 more
wiley   +1 more source

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

Maturation changes of hydrocarbons in solid parts of peloids from Serbian spas - catalytic influence of clay minerals [PDF]

Journal of the Serbian Chemical Society
The study focused on inspecting the composition of n-alkane, sterane and terpane biomarkers in healing mud (peloid) organic matter in the Rusanda, Bujanovac and Vranje spas. It was assumed that the catalytic influence of minerals on changes in biomarkers
Nikolovski Zlatko, Šajnović Aleksandra, Gajica Gordana, Burazer Nikola, Brčeski Ilija, Dabić Predrag, Jovančićević Branimir   +6 more
doaj   +1 more source

Clay Mineralogy of Red Clay Deposits from the Central Carpathian Basin (Hungary): Implications for Plio/Pleistocene Chemical Weathering and Paleoclimate [PDF]

, 2013
Geochemical and mineralogical studies of palaeosols provide essential information for palaeoclimatic and palaeoenvironmental interpretation of continental deposits and can present a proxy for palaeoclimate.
Kovács, János, Ottner, Franz, Raucsik, Béla, Varga, Andrea, Varga, György, Újvári, Gábor   +5 more
core  

The signature of river- and wind-borne materials exported from Patagonia to the southern latitudes: a view from REEs and implications for paleoclimatic interpretations [PDF]

, 2004
Riverine and wind-borne materials transferred from Patagonia to the SW Atlantic exhibit a homogeneous rare earth element (REE) signature. They match well with the REE composition of Recent tephra from the Hudson volcano,and hence this implies a ...
Bidart, Susana M., Depetris, Pedro J., Gaiero, Diego M., Leleyter, Lydia, Probst, Jean-Luc   +4 more
core   +2 more sources

Characteristics of Lacustrine Diamictite and Analysis of Diagenetic Reservoir Facies in the Neogene Lower Youshashan Formation in the Dafengshan Tectonic Belt in the Qaidam Basin

Energy Science &Engineering, EarlyView.
Based on field outcrop data, core descriptions, comprehensive thin section data (plain, cast, and fluorescent), scanning electron microscopy, whole rock analysis via X‐ray diffraction, physical property tests, element logging, core recording, and oil pilot tests, we propose utilizing a mature and practical three component classification method for ...
Lin Xie, Chang Liu, Hui He, Xianming Li, Mingqiu Hou, Pengshan Ma, Yu‐Jianjun Xue, Liang Qiao   +7 more
wiley   +1 more source

Machine Learning‐Driven Classification and Production Capacity Prediction of Tight Sandstone Reservoirs: A Case Study of the Taiyuan Formation, Ordos Basin

Energy Science &Engineering, EarlyView.
On the basis of core and log data, a Bayesian‐Optimized Random Forest model achieved 92.76% accuracy in classifying tight sandstone reservoirs. A gray relational analysis‐derived evaluation index shows > 80% consistency with actual gas zones. ABSTRACT Tight sandstone gas (TSG), an unconventional oil–gas resource, has heterogeneous reservoirs ...
Yin Yuan, Haijiao Fu, Detian Yan, Gang Wang, Shuguang Yang, Mengmeng Liu, Qingling Jiang, Xiaoming Wang, Wei Wang   +8 more
wiley   +1 more source

Phase IIb Trial for the Palliative Treatment of Patients With Primary Hepatic Malignancy Unable to Receive Curative Treatment: Efficacy of Colchicine

The Kaohsiung Journal of Medical Sciences, EarlyView.
ABSTRACT This trial was to evaluate the efficacy and the safety of colchicine for the palliative treatment of patients with primary hepatic malignancy unable to receive curative treatment. Forty hepatocellular carcinoma (HCC) patients and two intrahepatic cholangiocarcinoma (ICC) patients signed the informed consents.
Zu‐Yau Lin, Ming‐Lun Yeh, Po‐Cheng Liang, Shinn‐Cherng Chen, Chung‐Feng Huang, Jee‐Fu Huang, Chia‐Yen Dai, Ming‐Lung Yu, Wan‐Long Chuang   +8 more
wiley   +1 more source

Mineralogy of solods in the estuary at the Dzhanybek stationary site of the Institute of Forestry of the Russian Academy of Sciences

Бюллетень Почвенного института им. В.В. Докучаева
The structure of the soil cover of the Northern Caspian region includes the interdepression solonetz complex, soils of depressions and estuaries. Permanent elements of the microrelief of the estuary bottom are closed rounded microdepressions up to 9 m in
E. B. Varlamov, M. P. Lebedeva, N. A. Churilin, R. E. Musaelyan, A. V. Kolesnikov, A. A. Churilina   +5 more
doaj   +1 more source