Results 61 to 70 of about 282,083 (266)

Study on outburst prevention effect of short range protective seam mining of Wangxingzhuang Coal Mine

open access: yesGong-kuang zidonghua, 2016
The paper took Wangxingzhuang Coal Mine of Henan New Energy Development Co., Ltd. as research background, introduced protective seam mining theory, and investigated gas parameters in the same test site before and after taking protective layer mining ...
TIAN Kunyun, SUN Guangzhong
doaj   +1 more source

Perspective on the Refractive-Index Gas Metrology Data Landscape

open access: yesJournal of Physical and Chemical Reference Data, 2021
The redefinition of the kelvin has increased focus on thermometry techniques that use the newly fixed value of the Boltzmann constant to realize thermodynamic temperature. One such technique that has advanced considerably in recent years is refractive-index gas thermometry.
openaire   +1 more source

Cutaneous Phosphorylated Alpha‐Synuclein in Lewy Body Dementia

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To determine the test performance of cutaneous phosphorylated alpha‐synuclein (P‐SYN) in dementia with Lewy bodies (DLB), individuals with reduced Montreal Cognitive Assessment (MoCA) and healthy controls. Methods This is the first subgroup analysis of the Synuclein‐One study, a prospective, blinded study evaluating P‐SYN detection ...
Christopher H. Gibbons   +31 more
wiley   +1 more source

Dynamic discrimination method of gas security situation of stope face

open access: yesGong-kuang zidonghua, 2016
Dynamic discrimination method of gas security situation of stope face and six kinds of diversified evaluation indexes were proposed started from two major gas discharge forms of gas drainage and underground ventilation, and combining three major methane ...
LIU Yabing
doaj   +1 more source

How do Capital Goods Index, Metal Index and Oil and Gas Index explain the rising Auto Index?

open access: yesInternational Journal for Research in Applied Science and Engineering Technology, 2021
Abstract: The automobile sector holds a noteworthy position in the Indian economy. Resurgence of the sector from the shortterm slump it experienced in 2019 and the advent of electronic vehicle revolution is certain to bring about remarkable changes in the industry.
openaire   +1 more source

Mechanochemical Synthesis and Characterization of Nanostructured ErB4 and NdB4 Rare‐Earth Tetraborides

open access: yesAdvanced Engineering Materials, Volume 27, Issue 6, March 2025.
ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur   +5 more
wiley   +1 more source

Energy import diversity of energy importing countries: focus on Korea and Japan

open access: yesИнтеллект. Инновации. Инвестиции, 2019
This article tries to assess the energy import diversity of the Republic of Korea and Japan, which are 2 of the biggest energy importing countries and have a higher level of dependency on energy import.
Yoon Youngmin
doaj   +1 more source

Prediction of gas chromatographic retention indexes for polychlorinated dibenzofurans

open access: yesAnalytical Chemistry, 1990
A model has been developed by using molecular connectivity to describe the relationship between the molecular structure of polychlorinated dibenzofurans (PCDFs) and their gas chromatographic linear temperature-programmed retention characteristics on a 30-m fused silica column coated with a DB-5 stationary phase.
Robbat, A., Jr., Kalogeropoulos, C.
openaire   +3 more sources

Revisiting Stability Criteria in Ball‐Milled High‐Entropy Alloys: Do Hume–Rothery and Thermodynamic Rules Equally Apply?

open access: yesAdvanced Engineering Materials, Volume 27, Issue 6, March 2025.
The stability criteria affecting the formation of high‐entropy alloys, particularly focusing in supersaturated solid solutions produced by mechanical alloying, are analyzed. Criteria based on Hume–Rothery rules are distinguished from those derived from thermodynamic relations. The formers are generally applicable to mechanically alloyed samples.
Javier S. Blázquez   +5 more
wiley   +1 more source

The Role of Financial Development Factors on How to Affect Oil Price on Oil and Gas Rents in Iran [PDF]

open access: yesپژوهشهای اقتصادی, 2020
This paper investigates the role of financial development factors on how to affect oil price on oil and gas rents in Iran. In order to construct a multidimensional financial development index, the principal component analysis and weighted average of nine
fateme shamsolahrar fard   +4 more
doaj  

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