Results 41 to 50 of about 138,819 (306)

Electrical Conductivities of Conductors, Semiconductors, and Their Mixtures at Elevated Temperatures

open access: yesAdvanced Engineering Materials, EarlyView.
This article presents a comprehensive review of temperature‐dependent electrical conductivity data for multiple material classes at elevated temperatures, highlighting a persistent conductivity gap between metals and semiconductors in the range of 102$\left(10\right)^{2}$– 107$\left(10\right)^{7}$ S/m. Metal–ceramic irregular metamaterials are proposed
Valentina Torres Nieto, Marcia A. Cooper
wiley   +1 more source

Impact of Pre‐Oxidation Treatments on a Recycled MgO/Steel‐Composite as Carbon Free Anode in Aluminum‐Electrolysis Environments

open access: yesAdvanced Engineering Materials, EarlyView.
Cermets (60 vol.% AISI 316L stainless steel, 40 vol.% recycled MgO), intended for use in aluminum electrolysis, were pre‐oxidized in three furnaces with different heating technologies and subjected to a cryolite corrosion test. The different atmospheres influenced the formation of oxide layers, which in turn affected corrosion resistance and ...
Patricia Kaiser   +4 more
wiley   +1 more source

Natural gas accumulation from carbonate source rock with low total organic carbon content and high maturity: a case study of the Leikoupo Formation in the western Sichuan Depression

open access: yesDiscover Applied Sciences
Carbonate source rocks with low total organic carbon content (LTOC) are generally considered to be challenging to form large-scale oil and gas fields independently and are even regarded as ineffective source rocks.
Xinya Yu, Parhat Zunu
doaj   +1 more source

Rare Earth Element Composition of Carbonate Rocks Afforded by LA-ICP-MS and Its Formation Environment of the Zhaidi Underground River in Guilin

open access: yesYankuang ceshi, 2016
Rare earth elements are an important indicator for studying the formation condition and environmental characteristics of sedimentary rocks. The REEs of limestone samples in the Zhaidi underground river in Guilin were determined by Laser Ablation ...
FAN Lian-jie   +5 more
doaj   +1 more source

Understanding and Optimizing Li Substitution in P2‐Type Sodium Layered Oxides for Sodium‐Ion Batteries

open access: yesAdvanced Functional Materials, EarlyView.
This work explores Li‐substituted P2 layered oxides for Na‐ion batteries by crystallographic and electrochemical studies. The effect of lithium on superstructure orderings, on phase transitions during synthesis and electrochemical cycling and on the interplay of O‐ versus TM‐redox is revealed via various advanced techniques, including semi‐simultaneous 
Mingfeng Xu   +5 more
wiley   +1 more source

Importance of Microstructure in Carbonate Rocks: Laboratory and 3D-Imaging Petrophysical Characterization

open access: yesApplied Sciences, 2021
Carbonate rocks are considered to be essential reservoirs for human development, but are known to be highly heterogeneous and difficult to fully characterize. To better understand carbonate systems, studying pore-scale is needed.
Marie Leger, Linda Luquot
doaj   +1 more source

d13C tracing of dissolved inorganic carbon sources in Patagonian rivers (Argentina) [PDF]

open access: yes, 2005
The main Patagonian rivers (Colorado, Negro, Chubut, Deseado, Coyle, Chico, Santa Cruz and Gallegos) were sampled between September 1995 and November 1998 to determine their chemical and isotopic compositions, the origins of the suspended and dissolved ...
Brunet, Frédéric   +5 more
core   +4 more sources

3D (Bio) Printing Combined Fiber Fabrication Methods for Tissue Engineering Applications: Possibilities and Limitations

open access: yesAdvanced Functional Materials, EarlyView.
Biofabrication aims at providing innovative technologies and tools for the fabrication of tissue‐like constructs for tissue engineering and regenerative medicine applications. By integrating multiple biofabrication technologies, such as 3D (bio) printing with fiber fabrication methods, it would be more realistic to reconstruct native tissue's ...
Waseem Kitana   +2 more
wiley   +1 more source

Evaluation of the Upper Paleozoic source rocks in Western Henan, China: A case study in Luoyang Basin

open access: yesEnergy Reports, 2021
The Upper Paleozoic coal-measure strata in the Western Henan has good unconventional oil and gas exploration prospects. However, there is a lack of systematic evaluation of potential source rocks.
Fengyu Sun, Gaoshe Cao, Zhou Xing
doaj   +1 more source

Mineral reconnaissance at the Highland boundary with special reference to the Loch Lomond and Aberfoyle areas [PDF]

open access: yes, 1983
Serpentinite bodies at the Highland Boundary in the Loch Lomond and Aberfoyle areas are extensively altered to magnesite-quartz and ferroan-dolomite-quartz rocks. Silicification was probably initiated before conversion to carbonate.
Fortey, N.J.   +3 more
core  

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