Results 141 to 150 of about 5,841 (257)

A study on Mechanical Seepage Characteristics of Coal‐Rock Mass Under the Combined Action of Multiple Factors

Safety Science and Technology, EarlyView.
Schematic diagram of a triaxial fluid–solid coupling device based on the mapping function. ABSTRACT In deep coal mining, the influence of temperature–pressure coupling on the mechanical properties of coal is a crucial factor inducing dynamic disasters.
Musen Gao, Heng Ma, Xiaoqi Wang, Ke Gao
wiley   +1 more source

Competitiveness, productivity and externalization: Food versus autos in Catalonia [PDF]

This paper re-examines the innovation-productivity nexus on the basis of a paired comparison between Catalonia's food and auto sectors. The sectoral studies expose a set of productivity enhancement mechanisms that do not involve innovation in the sense ...
Ghemawat, Pankaj
core  

Electronic Modulation of Cobalt Single‐Atom Catalysts via In‐Plane and Axial Coordination Engineering for Enhanced H2O2 Electrosynthesis

SusMat, EarlyView.
Symmetry‐breaking in‐plane and axial coordination modulates the electronic structure of cobalt single‐atom catalysts for selective two‐electron oxygen reduction (2e− ORR). In‐plane O coordination (Co–N2O2) strengthens *OOH binding and suppresses activity, whereas axially coordinated Co–N5 enriches the Co center and optimizes the dz2 orbital, weakening ...
Wenjun Zhang, Jin Hyeng Kim, Subhajit Nandy, Sae Yane Paek, Ridhola Tri Ariski, Sana Kainat, Jaehun Lim, Dohee Kim, Seung Yong Lee, So‐Hye Cho, Sang Hoon Kim, Guicheng Liu, Joonwon Lim, Sooyeon Kim, Jong Min Kim   +14 more
wiley   +1 more source

Associations Between Metals and Nonmetals in Drinking Water, Cardiovascular Events, and Diet. [PDF]

JACC Adv
Shi H, Su M, Shen P, Ma J, Zhou Q, Yang Z, Chai P, Sun S, Lin H, Shui L, Liang Z, Huang S, Zhang N, Wang J, Chen K, Zhang Z.   +15 more
europepmc   +1 more source

Oxygen Compatibility Assessment of Components and Systems [PDF]

Fire hazards are inherent in oxygen systems and a storied history of fires in rocket engine propulsion components exists. To detect and mitigate these fire hazards requires careful, detailed, and thorough analyses applied during the design process.
Sparks, Kyle, Stoltzfus, Joel
core   +1 more source

Threshold Currents of Vacuum Arcs With Tungsten and Copper Cathodes

High Voltage, EarlyView.
ABSTRACT This paper presents the results of an experimental study aimed at determining the threshold current for triggering a vacuum arc discharge, the probability of arc ignition and the average arc operation time depending on the current for tungsten and copper electrodes.
P. S. Mikhailov, I. L. Muzyukin, I. V. Uimanov, D. L. Shmelev, S. A. Barengolts   +4 more
wiley   +1 more source

Band-Gap Regression with Architecture-Optimized Message-Passing Neural Networks. [PDF]

Chem Mater
Bechtel T, Speckhard DT, Godwin J, Draxl C.   +3 more
europepmc   +1 more source

Network Structure and the Efficiency Gains from Mergers: Evidence from U.S. Freight Railroads

The RAND Journal of Economics, EarlyView.
ABSTRACT The trade‐off between market power and efficiency gains is central to antitrust analyses of mergers, but empirical evidence quantifying efficiencies remains limited. Using transaction‐level data from U.S. freight railroads (1985–2005), this article quantifies merger‐induced cost efficiencies, driven mainly by eliminating inter‐railroad ...
Yanyou Chen
wiley   +1 more source

Capital and Output Trends in Mining Industries, 1870-1948 [PDF]

Israel Borenstein
core   +6 more sources

Pinacolborane as a Reducing Agent in the Atomic Layer Deposition of Copper and Bismuth. [PDF]

ACS Omega
Vihervaara A, Hatanpää T, Mizohata K, Chundak M, Ritala M.   +4 more
europepmc   +1 more source