Results 21 to 30 of about 61,666 (181)

Attack of carbonic anhydride and hydrogen sulfide on API class H cement slurries exposed to saline formation waters

open access: yesMateriales de Construccion, 2011
This paper discusses the attack of the major ions (sulfate, chloride, and magnesium) and sour gases, present in natural gas (CO2 y SH2), on API class H cement, the type used in gas wells under high pressure and temperature.
G. Márquez   +4 more
doaj   +1 more source

Design Principles for High-Capacity Mn-Based Cation-Disordered Rocksalt Cathodes [PDF]

open access: yes, 2020
Mn-based Li-excess cation-disordered rocksalt (DRX) oxyfluorides are promising candidates for next-generation rechargeable battery cathodes owing to their large energy densities, the earth abundance, and low cost of Mn.
Balasubramanian, M   +13 more
core   +1 more source

Correction to: Standard operation procedure for switchSENSE DRX systems [PDF]

open access: yesEuropean Biophysics Journal, 2021
In the original publication of the article, the production team updated the section name “Covalent coupling” twice by mistake.
Hanna Müller-Landau   +1 more
openaire   +1 more source

Caracterización mineralógica y elemental de sedimentos sólidos de la laguna de Yantac, departamento de Junín, provincia de Yauli, distrito de Marcapomacocha, por difracción y fluorescencia de rayos X

open access: yesRevista del Instituto de Investigación de la Facultad de Minas, Metalurgia y Ciencias Geográficas, 2016
Las muestras en estudio fueron extraídas a lo largo de la ribera de la laguna de Yantac-Junín, siendo uno de los objetivos identificar los minerales contaminantes procedentes de la actividad humana (ganadera, agrícola, etc.) y otros.
Biviano Miramira   +2 more
doaj   +1 more source

Controlling dynamic recrystallization via modified LPSO phase morphology and distribution in Mg-Gd-Y-Zn-Zr alloy

open access: yesJournal of Magnesium and Alloys, 2023
Featured initial microstructures of Mg-11Gd-4Y-2Zn-0.5Zr alloy (wt%) were obtained by adjusting temperatures of solid solution and cooling methods, including island intergranular 18R and 14H LPSO phases with low-density stacking faults, differentially ...
Ce Zheng   +5 more
doaj   +1 more source

Optimized LTE Data Transmission Procedures for IoT: Device Side Energy Consumption Analysis

open access: yes, 2017
The efficient deployment of Internet of Things (IoT) over cellular networks, such as Long Term Evolution (LTE) or the next generation 5G, entails several challenges.
Ameigeiras, Pablo   +4 more
core   +2 more sources

Distance measures in gravitational-wave astrophysics and cosmology

open access: yes, 2020
We present quantities which characterize the sensitivity of gravitational-wave observatories to sources at cosmological distances. In particular, we introduce and generalize the horizon, range, response, and reach distances.
Chen, Hsin-Yu   +5 more
core   +1 more source

Efecto de las nanopartículas de ZrO2 y L-Cys como agentes dopantes de recubrimientos sol-gel de sílice mesoporosa para la protección anticorrosiva de la aleación de magnesio AZ61

open access: yesRevista de Metalurgia, 2019
Sobre la superficie de la aleación de magnesio AZ61 se aplicaron recubrimientos de sol-gel basados en el precursor GPTMS-TMOS, incluyendo como agentes dopantes L-Cysteína y ZrO2 en diferentes concentraciones.
Leonardo Hernández   +3 more
doaj   +1 more source

Investigating the influence of Si on dynamic recrystallization during hot deformation behavior of ultra-high-strength lightweight steel

open access: yesJournal of Materials Research and Technology, 2023
In this work, we systematically evaluated the effect of Si on the dynamic recrystallization (DRX) during hot deformation behavior of a novel high-strength rolled Medium Mn steel.
Zhenshan Zhang   +4 more
doaj   +1 more source

Some Observations on Non-covariant Gauges and the epsilon-term

open access: yes, 2002
We consider the Lagrangian path-integrals in Minkowski space for gauges with a residual gauge-invariance. From rather elementary considerations, we demonstrate the necessity of inclusion of an epsilon-term (even) in the formal treatments, without which ...
Andrasi A.   +4 more
core   +1 more source

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