Results 71 to 80 of about 6,287 (218)

Connections of Trapezoidal Sheets under Fire

open access: yesActa Polytechnica, 2009
This paper describes two different experiments on connections of trapezoidal sheets under elevated temperatures. The first experiments were tensile tests carried out on four sets of tests with screwed connections under ambient and elevated temperatures ...
P. Kallerová, F. Wald, Z. Sokol
doaj  

Development of Analytical Solutions and Verification Experiments for Axially Restrained Reinforced Concrete Beams in a Fire

open access: yesBuildings
Fire-induced structural failure in axially restrained reinforced concrete (RC) beams is a critical concern in structural fire engineering. Comparative analysis with Eurocode and ASTM E119 fire safety guidelines reveals discrepancies between theoretical ...
Seungjea Lee   +4 more
doaj   +1 more source

Dark energy fingerprints in the nonminimal Wu-Yang wormhole structure [PDF]

open access: yes, 2014
We discuss new exact solutions to nonminimally extended Einstein-Yang-Mills equations describing spherically symmetric static wormholes supported by the gauge field of the Wu-Yang type in a dark energy environment. We focus on the analysis of three types
Balakin, Alexander B., Zayats, Alexei E.
core   +2 more sources

Impact of slug length in gas–liquid two‐phase flow on the structural stress characteristics of horizontal rigid pipelines

open access: yesThe Canadian Journal of Chemical Engineering, Volume 103, Issue 10, Page 5124-5142, October 2025.
Data collection and processing of slug length in two‐phase flow‐induced stress analysis. Abstract The intermittent passage of liquid slugs and gas pockets in slug flow generates substantial cyclic stress damage to piping systems and their supports. This issue poses significant challenges to the various industries in which this flow pattern is present ...
Abdalellah O. Mohmmed   +2 more
wiley   +1 more source

A simplified model of catenary action in reinforced concrete frames under axially restrained conditions [PDF]

open access: yesMagazine of Concrete Research, 2017
From previous experimental studies on missing column scenarios, catenary action could provide beneficial effects on structures during load redistribution after a target column is suddenly removed under an alternative load path procedure to assess structural resistance to progressive collapse.
Pham, Anh Tuan, Tan, Kang Hai
openaire   +2 more sources

Prime ideals in certain quantum determinantal rings [PDF]

open access: yes, 1998
The ideal I generated by the 2x2 quantum minors in the algebra A = O_q(M_{m,n}(k)) (the quantized coordinate algebra of mxn matrices) is investigated. Analogues of the First and Second Fundamental Theorems of Invariant Theory are proved.
Goodearl, K. R., Lenagan, T. H.
core   +1 more source

The Logical Firmament

open access: yesPhilosophical Issues, Volume 35, Issue 1, Page 149-164, October 2025.
ABSTRACT This essay asks a new question: When someone with a firm understanding of basic operations nevertheless remains ignorant of a complex logical or mathematical truth, precisely what kind of information are they missing? I introduce “catenary truths,” a significant component of this non‐omniscient shortfall.
Michael G. Titelbaum
wiley   +1 more source

The motion of the freely falling chain tip [PDF]

open access: yes, 2005
The dynamics of the tip of the falling chain is analyzed. Results of laboratory experiments are presented and compared with results of numerical simulations. Time dependences of the velocity and the acceleration of the chain tip for a number of different
Goldstein H.   +4 more
core   +5 more sources

Characteristics of Lightning Strikes on High‐Speed Rail Corridors in Jiangsu Province, China

open access: yesMeteorological Applications, Volume 32, Issue 5, September/October 2025.
Based on the terrain, lightning detection data, and catenary engineering parameters along 12 HSR corridors in Jiangsu Province, this study provides detailed analyses of the lightning characteristics, the cumulative probability distribution (CPD) of lightning current amplitudes, and the lightning strike characteristics on the catenary in these areas ...
Yan Liu   +7 more
wiley   +1 more source

Stages of Resistance of Reinforced Concrete Frames in Accidental Design Situation

open access: yesStructural Mechanics of Engineering Constructions and Buildings
The study addresses the stress-strain state stages of reinforced concrete frames in zones of potential local collapse due to failure of a vertical element, such as a column or pylon.
Sergei Yu. Savin
doaj   +1 more source

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