scholarly journals BEHAVIOR OF CENTRICALLY LOADED BOX-SECTION STEEL COLUMNS UNTIL COMPLETE COLLAPSE

2008 ◽  
Vol 73 (631) ◽  
pp. 1657-1664
Author(s):  
Shinji YAMAZAKI ◽  
Susumu MINAMI ◽  
Kazuki HANEDA
Keyword(s):  
Steel Columns ◽  
Box Section ◽  
Complete Collapse

scholarly journals Research on Hysteretic Performance of Q690 High Strength Steel High-Web Box-Section Steel Column

2021 ◽  
Vol 276 ◽  
pp. 02029
Author(s):  
Jianpeng Sun ◽  
Wei Feng ◽  
RuiPeng Guo ◽  
Chunfeng Liu
Keyword(s):  
Finite Element ◽  
High Strength Steel ◽  
High Strength ◽  
Element Model ◽  
Simulation Software ◽  
Steel Columns ◽  
Box Section ◽  
Element Simulation ◽  
Hysteretic Performance ◽  
Energy Dissipation Capacity

In this paper, the finite element simulation software ABAQUS was used to study the hysteretic performance of Q690 high-strength steel (HSS) and high-web box-section steel columns. The finite element model was established by solid elements, and the influence of the initial defects of materials on the specimen was considered. The hyteretic performance of the specimen was conducted by analyzing and comparing the width-thickness ration of the flanges and the width-thickness ration of the webs. The results show that the increase of width-thickness ratios of the webs and flanges will reduce the hysteresis performance, the energy dissipation capacity and the ultimate horizontal bearing capacity of the specimen.

Energy-based criteria for assessment of box-section steel columns against progressive collapse

Structures ◽  
2021 ◽  
Vol 34 ◽  
pp. 2580-2591
Author(s):  
Mohammad Javad Shabani ◽  
Abdolreza Sarvghad Moghadam ◽  
Armin Aziminejad ◽  
Mehran Seyed Razzaghi
Keyword(s):  
Progressive Collapse ◽  
Steel Columns ◽  
Box Section

Research on overall stability of BS700 high-strength steel columns with box section

2022 ◽  
Vol 189 ◽  
pp. 107090
Author(s):  
Lei Gao ◽  
Yu-Zhou Zheng ◽  
Lin-Yue Bai ◽  
Xiao-Hui He ◽  
Ming Ni
Keyword(s):  
High Strength Steel ◽  
High Strength ◽  
Steel Columns ◽  
Box Section ◽  
Overall Stability

A Relativistic Newtonian Mechanics Predicts with Precision the Results of Recent Neutrino-Velocity Experiments

2014 ◽  
Vol 6 (1) ◽  
pp. 1032-1035 ◽  
Author(s):  
Ramzi Suleiman
Keyword(s):  
Null Hypothesis ◽  
Experimental Studies ◽  
Theoretical Models ◽  
Newtonian Mechanics ◽  
Speed Of Light ◽  
Symmetry Principle ◽  
Proposed Model ◽  
Significant Difference ◽  
The One ◽  
Complete Collapse

The research on quasi-luminal neutrinos has sparked several experimental studies for testing the "speed of light limit" hypothesis. Until today, the overall evidence favors the "null" hypothesis, stating that there is no significant difference between the observed velocities of light and neutrinos. Despite numerous theoretical models proposed to explain the neutrinos behavior, no attempt has been undertaken to predict the experimentally produced results. This paper presents a simple novel extension of Newton's mechanics to the domain of relativistic velocities. For a typical neutrino-velocity experiment, the proposed model is utilized to derive a general expression for . Comparison of the model's prediction with results of six neutrino-velocity experiments, conducted by five collaborations, reveals that the model predicts all the reported results with striking accuracy. Because in the proposed model, the direction of the neutrino flight matters, the model's impressive success in accounting for all the tested data, indicates a complete collapse of the Lorentz symmetry principle in situation involving quasi-luminal particles, moving in two opposite directions. This conclusion is support by previous findings, showing that an identical Sagnac effect to the one documented for radial motion, occurs also in linear motion.

Preliminary Screening of Isolated Mycoherbicidal Fungi for the Management of Noxious Weed Xanthiumstrumarium

2019 ◽  
Vol 6 (02) ◽  
Author(s):  
AJAY KUMAR SINGH ◽  
AKHILESH KUMAR PANDEY
Keyword(s):  
Culture Filtrate ◽  
Photosynthetic Pigment ◽  
Phytopathogenic Fungi ◽  
Herbicidal Activity ◽  
Preliminary Screening ◽  
Detached Leaf ◽  
Noxious Weed ◽  
Complete Collapse

Natural phytotoxins of fungi are great source for the discovery of new herbicide and its offer a benign and eco-friendly alternative to manage weed. Thus, this study aimed to select potential fungi with potent herbicidal activity for control ofweeds. In the present study, various phytopathogenic fungi were isolated from infected tissues of various weeds and evaluated againstXanthium strumarium, a problematic monocotyledonous weed of open lands, agriculture, horticulture and forests. Herbicidal potential of Cell Free Culture Filtrate (CFCF) of strains ofPhoma herbarum (FGCCW#18, FGCCW#43) Fusariummonilifromecoded as FGCCW#35 and Fusarium roseum coded as FGCCW#55againstXanthium strumariumwere evaluated by seedling and shoot cut bioassays. Maximum mortalities of shoots, seedlings and phytotoxic damage were obtainedfrom28 day sold cell free culture filtrate (CFCF) of FGCCW#18 at 100% concentration. Significant reduction in biological contents i.e. photosynthetic pigment and protein was observed in the host weed on treatment with the CFCF as determined by detached leaf bioassay. Phytotoxic damage such as severe wilting, chlorosis, necrosis and complete collapse of the entire parts of the weed were also noticed due to CFCF application.

Paradise Lost?

2018 ◽  
Author(s):  
Nicholas Greenwood Onuf
Keyword(s):  
International Society ◽  
Paradise Lost ◽  
Functional Differentiation ◽  
Modern State ◽  
Economic Decline ◽  
Emotional Appeal ◽  
Social Coherence ◽  
Complete Collapse

Whether there has been a transition to something new in what it is possible to think remains to be seen. In the absence of such a transition, we are unlikely to see significant changes in the conditions of rule. If indeed capitalism is a spent force, then economic decline will accelerate and material inequality will increase. Short of a complete collapse, established conditions of rule will be reinforced—the mighty frame ever mightier, the international society of modern state-nations shows no signs of fading away. As migration dilutes blood ties and multiplies languages in daily use, nations depend all the more on territory for their social coherence and emotional appeal. That sovereignty is more difficult to locate spatially only illustrates the effects of modernist functional differentiation, which does not displace space or overlay it so much as penetrate the immediacy of place, every place, stealthily, by making itself indispensable.

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