Results 221 to 230 of about 273,199 (309)

Spatially resolved 23Na magnetic resonance dispersion measurement in porous media

The Canadian Journal of Chemical Engineering, EarlyView.
Quantitative 23Na MRI was employed to analyze dispersion in realistic core plug samples and was compared with the conventional breakthrough curve. 23Na MRI provided a more effective aassessment of core plug heterogeneity than the conventional method. Abstract Tracer tests are widely used in the petroleum industry to assess reservoir core plugs, relying
Rheya Rajeev, Mohammad Sadegh Zamiri, Andrés Ramírez Aguilera, Florea Marica, Laura Romero de Zerón, Bruce J. Balcom   +5 more
wiley   +1 more source

Hydrothermal Transformation of Organic Matter in the Case of Domanik Shale Deposits. [PDF]

Molecules
Onishenko Y, Tajik A, Vakhin A, Dengaev A, Oscar FK, Sitnov S, Duglav Y, Ismaeel M, Mirzaev O, Aliev F.   +9 more
europepmc   +1 more source

In‐situ asphaltene capture with iron oxide nanoparticles in steam‐assisted gravity drainage (SAGD) for improved recovery and partial upgrading of bitumen

The Canadian Journal of Chemical Engineering, EarlyView.
Key improvements obtained by incorporating nanoparticles into a lab‐scale SAGD process configuration. The bar plots show enhanced oil recovery, reduced viscosity, and increased asphaltene adsorption in nanoparticle‐assisted scenarios compared with conventional SAGD.
Luis Prada, Saleh S. Baakeem, Mabkhot BinDahbag, M. Daniela Contreras‐Mateus, Jesus Botett, Afif Hethnawi, Nashaat N. Nassar   +6 more
wiley   +1 more source

AE-based classification and fracture process analysis of flawed marble with stress intensity factor validation. [PDF]

Sci Rep
Sha P, Fan J, Lv Y, Chen J.
europepmc   +1 more source

Clathrate hydrate crystallization

The Canadian Journal of Chemical Engineering, EarlyView.
Abstract Clathrate hydrate crystallization has been an area of interest to chemical engineers from the point of view of crystal structure, thermophysical properties, phase equilibria, kinetics, industrial applications, and environmental (climate change) implications.
Peter Englezos
wiley   +1 more source

Analysis of water-permeable fractured zone in weakly cemented overburden considering rock strain-softening. [PDF]

Sci Rep
Xue S, Wang Q, Song Z.
europepmc   +1 more source

Examining Phosphatidylethanol (PEth) Formation Rates Within and Between Subjects in Ex Vivo Whole Blood

Drug Testing and Analysis, EarlyView.
PEth formation rate increased with increasing ethanol concentration with variability between participants but was mostly consistent within‐subject. No relationship was observed between phosphatidylcholine concentrations and PEth formation rates. PEth concentrations should be used to monitor an individual's ethanol use over time, rather than compared ...
Haidyn G. Stark, Jesus J. Sanchez, Nathalie Hill‐Kapturczak, John D. Roache, Brett C. Ginsburg   +4 more
wiley   +1 more source

Evaluation of the impact of blast damage on tunnel surrounding rock induced by C-type cumulative tube cone angle. [PDF]

Sci Rep
Guo J, Fei H, Ji H, Bao S, Hu G, Yan Y.
europepmc   +1 more source

Probability prediction of true‐triaxial compressive strength of intact rocks based on the improved PSO‐RVM model

Deep Underground Science and Engineering, EarlyView.
In this work, we propose an improved particle swarm optimization (PSO) algorithm and develop an improved PSO‐relevance vector machine (RVM) model as a substitute for traditional true‐triaxial testing. The model's high prediction accuracy was validated through comparisons with two other machine learning methods and five three‐dimensional Hoek–Brown type
Qi Zhang, Maohui Wang, Ning Wang, Yixin Shen, Xuzhen He   +4 more
wiley   +1 more source

Permeability evolution and microstructural regulation of clay cement grouted body under coupled seepage and stress conditions. [PDF]

Sci Rep
Lujun C, Yaoxiang W, Kun W, Aiping C.
europepmc   +1 more source