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
2021 ◽  
Vol 276 ◽  
pp. 02029
Author(s):  
Jianpeng Sun ◽  
Wei Feng ◽  
RuiPeng Guo ◽  
Chunfeng Liu

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.


Structures ◽  
2021 ◽  
Vol 34 ◽  
pp. 2580-2591
Author(s):  
Mohammad Javad Shabani ◽  
Abdolreza Sarvghad Moghadam ◽  
Armin Aziminejad ◽  
Mehran Seyed Razzaghi

2022 ◽  
Vol 189 ◽  
pp. 107090
Author(s):  
Lei Gao ◽  
Yu-Zhou Zheng ◽  
Lin-Yue Bai ◽  
Xiao-Hui He ◽  
Ming Ni

2014 ◽  
Vol 6 (1) ◽  
pp. 1032-1035 ◽  
Author(s):  
Ramzi Suleiman

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.


2019 ◽  
Vol 6 (02) ◽  
Author(s):  
AJAY KUMAR SINGH ◽  
AKHILESH KUMAR PANDEY

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.


Author(s):  
Nicholas Greenwood Onuf

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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