Results 1 to 10 of about 1,609,424 (285)

Degradation of submerged/wet concrete under cyclic compression and cyclic shear [PDF]

open access: yesMATEC Web of Conferences, 2019
The aim of this study is to identify a specific degradation of concrete that has been observed in bridge decks made of reinforced concrete (RC). To control the phenomenon, fundamental studies were conducted.
Fujiyama Chikako   +2 more
doaj   +2 more sources

Strength degradation of sandstone and granodiorite under uniaxial cyclic loading

open access: yesJournal of Rock Mechanics and Geotechnical Engineering, 2018
Change in mechanical properties of rocks under static loading has been widely studied and documented. However, the response of rocks to cyclic loads is still a much-debated topic.
Rashid Geranmayeh Vaneghi   +3 more
doaj   +3 more sources

Laboratory investigations of sand-smooth steel interface under monotonic and cyclic loadings [PDF]

open access: yesSongklanakarin Journal of Science and Technology (SJST), 2020
Frictional characteristics of the interface between a structure and surrounding soil, which can commonly be found in many geotechnical works, play an important role in evaluating the bearing capacity.
Chaisit Pengjam   +3 more
doaj   +1 more source

Derivation of Cyclic Stiffness and Strength Degradation Curves of Sands through Discrete Element Modelling

open access: yesModelling, 2022
Cyclic degradation in fully saturated sands is a liquefaction phenomenon characterized by the progressive variation of the soil strength and stiffness that occurs when the soil is subjected to cyclic loading in undrained conditions.
Fedor Maksimov, Alessandro Tombari
doaj   +1 more source

An elastoplastic dynamic constitutive model for saturated soft clay based on bounding surface theory

open access: yesYantu gongcheng xuebao, 2021
The elastoplastic dynamic constitutive model plays an important role in the design of embankment or foundation under cyclic loading. The main challenge in the design of geotechnical engineering is to establish a dynamic constitutive model which is ...
FENG Shuang-xi 1, LEI Hua-yang 1, 2, 3
doaj   +1 more source

Damping Ratio of Sand Containing Fine Particles in Cyclic Triaxial Liquefaction Tests

open access: yesApplied Sciences, 2023
Sand liquefaction triggered by earthquakes is a devastating geological disaster and has emerged as an engaging topic in earthquake engineering. With an enhanced understanding of pure sand liquefaction promoted by laboratory research, there is a growing ...
Jiajing Zhao   +3 more
doaj   +1 more source

Experimental study on strain accumulation characteristics of saturated remolded loess under pure rotation of the principal stress axis

open access: yesFrontiers in Ecology and Evolution, 2023
The study conducted a pure rotation test of 720° for saturated remolded Q2 loess under principal stress axis (PSA) rotation when deviatoric stress and the intermediate principal stress ratio are different, also paying attention to examining the changes ...
Sui Wang   +8 more
doaj   +1 more source

Peak and Cumulative Response of Reinforced Concrete Frames with Steel Damper Columns under Seismic Sequences

open access: yesBuildings, 2022
The steel damper column is an energy-dissipating member that is suitable for reinforced concrete (RC) buildings and those used for multistory housing in particular.
Kenji Fujii
doaj   +1 more source

Microbial degradation of cyclic peptides produced by bacteria [PDF]

open access: yesThe Journal of Antibiotics, 2009
Bacterial strain, B-9, isolated from Lake Tsukui, Japan, and characterized as genus Sphingosinicella sp., possesses hydrolytic enzymes capable of degrading various toxic and non-toxic cyanobacterial cyclic peptides, such as microcystins, nodularin, microviridin, microcyclamide and aeruginopeptin.
Hajime, Kato   +2 more
openaire   +2 more sources

Enzymatical and microbial degradation of cyclic dipeptides (diketopiperazines) [PDF]

open access: yesAMB Express, 2013
Diketopiperazines (DKPs) are cyclic dipeptides, representing an abundant class of biologically active natural compounds. Despite their widespread occurrence in nature, little is known about their degradation. In this study, the enzymatical and microbial cleavage of DKPs was investigated.
Perzborn, M., Syldatk, C., Rudat, J.
openaire   +4 more sources

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