Results 1 to 10 of about 27,923,169 (310)

Effect of real-time temperature and shear angle on the mechanical strength and energy evolution of oil shale [PDF]

open access: yesOil 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]

open access: yesOil 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]

open access: yesOil 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

Interfacial Engineering for Highly Stable and Stretchable Electrodes Enabled by Printing/Writing Surface‐Embedded Silver and Its Selective Alloying with Liquid Metals

open access: yesAdvanced 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

Nickel-organic Frameworks with Hierarchical Flowers Structure Fabricated by Surfactant-assisted Solvothermal Method for High-performance Supercapacitors

open access: yesInternational 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

Some New Results in Partial Cone $b$-Metric Space

open access: yesCommunications in Advanced Mathematical Sciences, 2020
In this paper, we introduce the concepts of the Ulam-Hyers-Rassias stability and the limit shadowing property of a fixed point problem and the $P$-property of a mapping in partial cone $b$-metric space.
Zeynep Kalkan, Aynur Şahin
doaj   +1 more source

NiFe2O4-Coated Activated Carbon Composite as a Cathode Material for Lithium–Sulfur Batteries

open access: yesInternational 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

Property P in modular metric spaces

open access: yesVojnotehnički Glasnik, 2022
Introduction/purpose: The aim of this paper is to present the concept of the generalized ∅−weak contractive condition involving various combinations of d(x,y) in modular metric spaces. Methods: Conventional theoretical methods of functional analysis.
Ljiljana Paunović   +3 more
doaj   +1 more source

Climate change-induced disasters and cultural heritage: Optimizing management strategies in Central Europe

open access: yesClimate Risk Management, 2021
Due to climate change, it is foreseen that the frequency and magnitude of extreme climate events such as heavy precipitation, flooding and drought will increase throughout Europe.
Riccardo Cacciotti   +6 more
doaj   +1 more source

Nitrogen Doping of Porous Carbon Electrodes Derived from Pine Nut Shell for High-Performance Supercapacitors

open access: yesInternational 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

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