Results 61 to 70 of about 262,135 (326)

THE STUDY ON CALCULATION METHOD OF THE TEARING FORCE FOR A TEARING DEVICE ON AEROSTAT

open access: yesJixie qiangdu, 2020
A method for calculating the tearing force of a new type of tearing device for aerostat was studied based on the theory of linear elastic fracture mechanics. Firstly,the critical strain energy release rates GICand GIIICof the film materials were obtained
YI HuiCheng, YI Jie, SONG Miao
doaj  

Tearing mode stability calculations with pressure flattening

open access: yes, 2013
Calculations of tearing mode stability in tokamaks split conveniently into an external region, where marginally stable ideal MHD is applicable, and a resonant layer around the rational surface where sophisticated kinetic physics is needed.
Connor, J W   +5 more
core   +1 more source

Microbial exopolysaccharide production by polyextremophiles in the adaptation to multiple extremes

open access: yesFEBS Letters, EarlyView.
Polyextremophiles are microorganisms that endure multiple extreme conditions by various adaptation strategies that also include the production of exopolysaccharides (EPSs). This review provides an integrated perspective on EPS biosynthesis, function, and regulation in these organisms, emphasizing their critical role in survival and highlighting their ...
Tracey M Gloster, Ebru Toksoy Öner
wiley   +1 more source

Research on longitudinal tearing detection system of mine-used conveyor belt

open access: yesGong-kuang zidonghua, 2017
For problems of low sensitivity and complex detector with large volume of current longitudinal tearing detection methods of mine-used conveyor belts, a longitudinal tearing detection system of mine-used conveyor belt was designed by use of machine vision
LIU Weili, QIAO Tiezhu
doaj   +1 more source

The nicotinamide hypothesis revisited—plant defense signaling integrating PARP, nicotinamide, nicotinic acid, epigenetics, and glutathione

open access: yesFEBS Letters, EarlyView.
Nicotinamide (NIC) and nicotinic acid (NIA) are proposed as stress signaling compounds in plants. Oxidative stress may lead to single strand breaks (SSB) in DNA, which activate poly(ADP‐ribose) polymerase (PARP). NIC and NIA are then formed from NAD. NIC and NIA can promote epigenetic changes leading to the expression of defense genes specific for the ...
Torkel Berglund, Anna B. Ohlsson
wiley   +1 more source

The root cause of disruptive NTMs and paths to stable operation in DIII-D ITER baseline scenario plasmas

open access: yesNuclear Fusion
Analyses of the DIII-D ITER Baseline Scenario database support that the disruptive m,n =2,1 magnetic islands are pressure gradient driven, non-linear instabilities seeded in a sequence of stochastic transient magnetic perturbations, and that the current ...
L. Bardoczi   +6 more
doaj   +1 more source

Flexible honeycomb structure can bend to fit compound curves [PDF]

open access: yes, 1964
For flexibility in forming a curved surface, a honeycomb configuration using multiple pleats has proved superior to the usual core structures. The partial pleats formed in individual cell walls permit movements to and from the central axis without ...
Carmody, R. J.
core   +1 more source

Single cis‐elements in brassinosteroid‐induced upregulated genes are insufficient to recruit both redox states of the BIL1/BZR1 DNA‐binding domain

open access: yesFEBS Letters, EarlyView.
Phytohormone brassinosteroid‐induced gene regulation by the transcription factor BIL1/BZR1 involves redox‐dependent DNA‐binding alternation and interaction with the transcription factor PIF4. The reduced BIL1/BZR1 dimer binds preferred cis‐elements, while oxidation alters its oligomerization state and disrupts DNA‐binding ability.
Shohei Nosaki   +4 more
wiley   +1 more source

ACL tear

open access: yesOrthopaedics & Traumatology: Surgery & Research, 2013
Anterior cruciate ligament (ACL) reconstruction has evolved considerably over the past 30 years. This has largely been due to a better understanding of ACL anatomy and in particular a precise description of the femoral and tibial insertions of its two bundles. In the 1980s, the gold standard was anteromedial bundle reconstruction using the middle third
openaire   +2 more sources

A fundamental understanding of the unstable eigenmodes of double tearing instabilities in a shear slab geometry

open access: yesAIP Advances, 2020
Two types of unstable eigenmodes of resistive tearing instabilities, namely, symmetric and anti-symmetric modes, in a double current sheet configuration are analyzed by means of both an eigenvalue solver and initial value simulation.
L. Wei, F. Yu, H. J. Ren, Z. X. Wang
doaj   +1 more source

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