Results 1 to 10 of about 726,036 (269)
Effect of real-time temperature and shear angle on the mechanical strength and energy evolution of oil shale [PDF]
Oil Shale, 2022 During in situ thermal injection in oil shale mining, the shear properties of oil shale at real-time high temperatures considerably affect the stability of injection and production wellbore as well as oil and gas production.
Siqi Ren +4 more
doaj +1 more source
Study on pore and fracture evolution characteristics of oil shale pyrolysed by high-temperature water vapour [PDF]
Oil Shale, 2022 In this study, a self-designed test system for injecting water vapour was used to pyrolyse oil shale from Barkol, Xinjiang, China. The internal structure of oil shale samples after water vapour pyrolysis at different temperatures was characterised using ...
Jing Zhao +4 more
doaj +1 more source
Evolution of pore characteristics in oil shale during pyrolysis under convection and conduction heating modes [PDF]
Oil Shale, 2020 The pores in oil shale, which act as channels for the migration of products of cracking of organic matter and the place for heat transfer in the rock mass, directly influence pyrolysis efficiency.
Lei Wang +3 more
doaj +1 more source
Advanced Materials Interfaces, 2022 Even though intrinsically stretchable liquid metals (LMs) have been widely used in the stretchable electrodes for improving the stretchability, it is still challenging to achieve stable interfaces in these electrodes. A usual approach of adhering the LMs
Zelin Liu +6 more
doaj +1 more source
ULTRAVIOLET PROPERTIES OF f(R)-GRAVITY [PDF]
International Journal of Modern Physics A, 2008 We discuss the existence and properties of a nontrivial fixed point in f(R)-gravity, where f is a polynomial of order up to six. Within this seven-parameter class of theories, the fixed point has three ultraviolet-attractive and four ultraviolet-repulsive directions; this brings further support to the hypothesis that gravity is nonperturbatively ...
A. CODELLO +2 more
openaire +3 more sources
International Journal of Electrochemical Science, 2021 In this work, Ni-MOF (R-160) with a hierarchical flower-like structure is fabricated by a facile solvothermal method with surfactant assistance. Benefiting from its structure, R-160 has a very high specific surface area and a large number of exposed ...
Yi Wu +14 more
doaj +1 more source
Properties of R-Sausages [PDF]
Discrete and Computational Geometry, 2004 This paper is concerned with the Steiner ratio. A number of properties about the structure of the flat sausage and ℛ-Sausage convex polytopes yielding the best Steiner ratio in two- and three-dimensional Euclidean space, and the topology of the Steiner Minimal Tree for the corresponding vertex sets, are presented.
Badri Toppur, J. MacGregor Smith
openaire +1 more source
NiFe2O4-Coated Activated Carbon Composite as a Cathode Material for Lithium–Sulfur Batteries
International Journal of Electrochemical Science, 2020 Lithium–sulfur batteries are promising as next-generation rechargeable energy-storage devices because of their high energy density, low cost, and environmental friendliness.
Riguang Cheng +10 more
doaj +1 more source
International Journal of Electrochemical Science, 2020 Porous carbon materials are one of the most widely studied electrode materials in supercapacitor electrode materials. Many studies have shown that increasing the specific surface area of porous carbon materials, increasing the pore structure, and hetero ...
Jinghua Li +7 more
doaj +1 more source
On weighted noncorona graphs with properties R and −SR
Kuwait Journal of Science, 2023 Let $\mathfrak{G}_w$ be a simple undirected weighted graph with adjacency matrix $\mathcal{A}(\mathfrak{G}_w)$. The set of all eigenvalues of $\mathfrak{G}_w$ is called the spectrum of $\mathfrak{G}_w$ denoted by $\sigma(\mathfrak{G}_w)$. The reciprocal
Uzma Ahmad, saira Hameed, sadia Akhtar
doaj +1 more source