Results 31 to 40 of about 550,291 (266)

Evaluation of the impact strength of the traction gearbox housing for the traction of a high-speed electric train in terms of deformation rate of the material

open access: yesВестник Научно-исследовательского института железнодорожного транспорта, 2023
Introduction. Solving a wide range of problems to maintain the strength of train undercarriage under the impact of ballast particles, such as ice chunks, during the cold season is considered a topical issue for high-speed railways.
E. K. Rybnikov   +2 more
doaj   +1 more source

Reviewing South Africa’s Non-Proliferation Policy and Strategic Trade Controls

open access: yesThe Thinker
The prohibition of Weapons of Mass Destruction (WMDs) in South Africa is governed through the implementation of an integrated and robust non-proliferation and arms control policy, legislative and regulatory framework, which has been revised and improved
Melanie Reddiar
doaj   +1 more source

Moments of the Negative. Two Small Nihilist Episodes from the 1940s [PDF]

open access: yesPhainomena
Evoking Leo Strauss’s 1941 text “German Nihilism” and his forceful claim that nihilism is above all “the rejection of the principles of civilization as such,” my intention is to thematize the possible forms of coexistence that survive and develop despite
Petar Bojanić
doaj   +1 more source

Modeling of Chelyabinsk meteorite fall [PDF]

open access: yesКомпьютерные исследования и моделирование, 2013
We study the motion and destruction of Chelyabinsk meteoroid using simple physical and mathematical models. We evaluate the parameters of the motion, taking into account the ablation and mechanical destruction of the meteoroid, and compare our results to
Yu. D. Shevelev   +2 more
doaj   +1 more source

Dynamical behaviors, chaotic pattern and multiple optical solitons for coupled stochastic Schrödinger–Hirota system in magneto-optic waveguides with multiplicative white noise via Itô calculus

open access: yesResults in Physics
The primary focus of this study was on exploring the optical soliton solutions and chaotic patterns in magneto-optic waveguides through the coupled stochastic Schrödinger–Hirota equation with multiplicative white noise.
Tianxiu Lu   +3 more
doaj   +1 more source

Phosphatidylinositol 4‐kinase as a target of pathogens—friend or foe?

open access: yesFEBS Letters, EarlyView.
This graphical summary illustrates the roles of phosphatidylinositol 4‐kinases (PI4Ks). PI4Ks regulate key cellular processes and can be hijacked by pathogens, such as viruses, bacteria and parasites, to support their intracellular replication. Their dual role as essential host enzymes and pathogen cofactors makes them promising drug targets.
Ana C. Mendes   +3 more
wiley   +1 more source

Methodology and features of a computational experiment to assess the resource of responsible engineering facilities [PDF]

open access: yesИзвестия Саратовского университета. Новая серия: Математика. Механика. Информатика
The problem of obtaining estimates of the strength and resource characteristics of critical engineering infrastructure facilities under operational multiparametric nonstationary thermomechanical impacts is considered.
Volkov, Ivan A.   +3 more
doaj   +1 more source

Modulation of Homer1 EVH1 domain internal dynamics by putative autism‐associated mutations

open access: yesFEBS Letters, EarlyView.
The putative autism‐associated M65I and S97L variants of the EVH1 domain of the postsynaptic scaffold protein Homer1 do not exhibit substantial changes in their overall structure or partner binding. Both of them, but especially the M65I variant, show altered internal dynamics relative to the wild‐type domain on the μs‐ms timescale, indicated by the ...
Fanni Farkas   +6 more
wiley   +1 more source

Three phosphatase families form a community: The phosphohydrolases that act upon inositol pyrophosphates

open access: yesFEBS Letters, EarlyView.
Inositol pyrophosphates are energy‐rich signaling molecules that perform critical functions in cells. Three different families of phosphatases hydrolyze the β phosphate of the inositol pyrophosphate molecules: two have narrow specificities and one is promiscuous.
Ronda J. Rolfes
wiley   +1 more source

The application of epoxy resin polymers by laser induction technologies

open access: yesScience and Engineering of Composite Materials
The fabrication of robust and high-performance graphene-based electrodes on engineering plastics has garnered significant attention in recent years. In this study, we present a novel methodology to produce porous graphene structures derived from epoxy ...
Yu Chao   +6 more
doaj   +1 more source

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