Results 1 to 10 of about 160,144 (264)

High-pressure-induced water penetration into 3-isopropylmalate dehydrogenase [PDF]

open access: yesActa Crystallographica Section D: Biological Crystallography, 2012
Hydrostatic pressure induces structural changes in proteins, including denaturation, the mechanism of which has been attributed to water penetration into the protein interior. In this study, structures of 3-isopropylmalate dehydrogenase (IPMDH) from Shewanella oneidensis MR-1 were determined at about 2 Å resolution under pressures ranging from 0.1 to ...
Takayuki Nagae   +2 more
exaly   +3 more sources

A Mesoscopic Viewpoint on Slurry Penetration and Pressure Transfer Mechanisms for Slurry Shield Tunneling

open access: yesBuildings, 2022
The penetration characteristics of the slurry and the support pressure transfer mechanisms are critical to the tunnel face stability control during a mechanized excavation. In this paper, numerical calculations coupling computational fluid dynamics (CFD)
Keqi Liu, Wantao Ding, Chunxu Qu
doaj   +3 more sources

Intraocular Pressure Measurement after Penetrating Keratoplasty [PDF]

open access: yesDiagnostics, 2022
Assessing the intraocular pressure is a difficult but crucial task in the follow-up of patients that have undergone penetrating keratoplasty. Early recognition of elevated intraocular pressure and/or glaucoma and establishment of the appropriate treatment is essential to ensure the best possible visual outcome for patients dealing with this feared ...
Otilia-Maria Dumitrescu   +3 more
openaire   +3 more sources

Sealing Performance of the End Fitting of a Marine Unbonded Flexible Pipe under Pressure Penetration [PDF]

open access: yesJournal of Applied and Computational Mechanics, 2020
The sealing performance of end fittings is very important for offshore oil and gas pipelines. To investigate the sealing behavior of a ring-shaped wedge seal, global and local numerical models of the ring–pipe interaction have been developed based on the
Liping Tang   +3 more
doaj   +1 more source

A Numerical Study on the Cement Slurry Penetration Performance of the Cyclic Grouting Method with High-Frequency Pulsating Pressure

open access: yesApplied Sciences, 2023
The performance of traditional steady grouting is sometimes limited; therefore, a new high-frequency pulsed grouting method is proposed. Through the CFD method, this paper studies the cement slurry penetration performance of cyclic grouting under the ...
Yongfeng Li   +5 more
doaj   +1 more source

Experimental Study and Simulation Calculation of the Chloride Resistance of Concrete under Multiple Factors

open access: yesApplied Sciences, 2021
Cement is widely used in marine concrete, and its resistance to chloride ion corrosion has been widely considered. In this paper, based on a laboratory test, the influence of different hydrostatic pressures, coarse aggregate contents and w/c ratios on ...
Yang Ding   +8 more
doaj   +1 more source

Measuring method for membrane penetration capacity of coarse-grained soil in triaxial tests

open access: yesYantu gongcheng xuebao, 2021
The membrane penetration effects displayed in the coarse-grained soil tests will distort the measurement of volume deformation of samples, thereby affecting the measuring accuracy of strength and deformation index.
XU Wei-wei 1, CHEN Sheng-shui 1, 2, FU Zhong-zhi 1, 2, JI En-yue 1, 2
doaj   +1 more source

The Correlation between Penetration Pressure Required to Install Pile Foundation and to Insert Bi-cones in Cone Penetration Test

open access: yesCivil Engineering Dimension, 2019
One of the common methods used to install pile foundation is hydraulic jacked-in machine. In this method, a pile is pushed down into the ground up to the predetermined depth. The method has similar principle to that of Cone Penetration Test (CPT).
Gogot Setyo Budi   +2 more
doaj   +3 more sources

Characteristics of the plasma produced by the energetic electron beam in sub-atmospheric pressure

open access: yesAIP Advances, 2021
In this paper, the lattice Boltzmann method is used to simulate the diffusion and ionization process of a two-dimensional energetic electron beam that is injected into the background gases under the sub-atmospheric pressure, and the characteristics of ...
Hui Wang   +4 more
doaj   +1 more source

Characterization of Pressure Distribution in Penetrating Traumatic Brain Injuries [PDF]

open access: yesFrontiers in Neurology, 2015
Severe impacts to the head commonly lead to localized brain damage. Such impacts may also give rise to temporary pressure changes that produce secondary injuries in brain volumes distal to the impact site. Monitoring pressure changes in a clinical setting is difficult; detailed studies into the effect of pressure changes in the brain call for the ...
Davidsson, Johan, Risling, Mårten
openaire   +3 more sources

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