Results 71 to 80 of about 3,511,649 (249)

Artificial molecular machines and motors—Design and control of nanoscale motion

open access: yesFEBS Letters, EarlyView.
Molecules are constantly moving because of thermal fluctuations, but random motion alone cannot be exploited to perform directional tasks. Artificial molecular machines use chemical, electrical, or light energy to bias this motion. Molecular shuttles, rotary motors, and supramolecular pumps illustrate how nanoscale movement can be controlled and ...
Leonardo Andreoni, Alberto Credi
wiley   +1 more source

Dislocation Mechanics Pile-Up and Thermal Activation Roles in Metal Plasticity and Fracturing

open access: yesMetals, 2019
Dislocation pile-up and thermal activation influences on the deformation and fracturing behaviors of polycrystalline metals are briefly reviewed, as examples of dislocation mechanics applications to understanding mechanical properties.
Ronald W. Armstrong
doaj   +1 more source

Origin of high strength in the CoCrFeNiPd high-entropy alloy

open access: yesMaterials Research Letters, 2020
Recent experiments show that the CoCrFeNiPd high-entropy alloy (HEA) is significantly stronger than CoCrFeNi and with nanoscale composition fluctuations beyond those expected for random alloys.
Binglun Yin, W. A. Curtin
doaj   +1 more source

Leucine‐rich glioma inactivated 1 (LGI1) is a ganglioside‐binding protein

open access: yesFEBS Letters, EarlyView.
Neuronal hyperexcitability associated with a decrease/absence of the extracellular protein LGI1 has been suggested to be primarily due to the downregulation of Kv1 channel expression. The molecular mechanisms underlying this decrease have not yet been elucidated.
Kévin Debreux   +7 more
wiley   +1 more source

ANALYSIS OF STRENGTH CHARACTERISTICS IN RAILROAD DOWELS PRODUCED BY VARIOUS MANUFACTURERS

open access: yesArchitecture and Engineering, 2019
The article describes operating conditions of the railroad dowel used in ZhBR 65 resilient rail fasteners. Requirements for railroad dowel tests in terms of their expediency, possibility to perform such tests and conformity with the actual operating ...
Dmitrii Nikitin   +3 more
doaj   +1 more source

The ubiquitin system in normal and infected germinal center B cells

open access: yesFEBS Letters, EarlyView.
The ubiquitin system plays a central role in germinal center (GC) B cells, influencing differentiation to long‐lived memory B cells. Oncogenic gammaherpesviruses gain access to memory B cells by establishing latency in GC B cells. Mapping ubiquitin mechanisms in normal and infected GC B cells will define specific molecular circuits in B cells germane ...
Destiny Davis   +2 more
wiley   +1 more source

Atomistic Simulation On Size-Dependent Yield Strength And Defects Evolution Of Metal Nanowires

open access: yes, 2009
A simple derivation based on continuum mechanics is given, which shows the surface stress is critical for yield strength at ultra-small scales. Molecular dynamics (MD) simulations with modified embedded atom method (MEAM) are employed to investigate the ...
杨振宇, 卢子兴, Zhao YP, 赵亚溥
core   +1 more source

Research on Calculation of Load-Bearing Capacity of Deepwater Umbilical Termination Head

open access: yesShiyou jixie, 2023
The umbilical termination head(UTH)is a key hardware device of underwater umbilicals.It bears complex loads in the harsh deepwater environment and has higher requirements for the reliability of the connection system.In this paper,the deepwater UTH used ...
Liu Xinyu   +6 more
doaj  

Invisible but not inaccessible—Revealing transient oligomers formed by intrinsically disordered proteins with solution NMR and complementary methods

open access: yesFEBS Letters, EarlyView.
Transient oligomers formed by intrinsically disordered proteins may be ‘invisible’ to direct detection yet remain accessible to solution NMR through equilibrium‐exchange measurements and pressure‐jump experiments. Complementary methods report on mass, stoichiometry, selected distance distributions, morphology, and internal packing.
Martin D. Gelenter, Ad Bax
wiley   +1 more source

SOME QUESTIONS OF PHYSICS OF STRENGTH OF METAL NANOSTRUCTURES [PDF]

open access: yesФизико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2013
In the work of the equation is obtained that relates the limit of fluidity of a crystal with its limit of elasticity. The equation is analogous to the known equations of the Hall-Petch.
V.M. Yurov   +2 more
doaj  

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