Results 51 to 60 of about 1,917,813 (302)

PROBLEMS OF USING FLEXIBLE THERMOPLASTIC HOSES IN COLD CLIMATE

open access: yesНаучный вестник МГТУ ГА, 2016
The possibility of using pressure thermoplastic hoses in the Arctic and the Far North is evaluated. The conclusion that the replacement of rubber hoses on the thermoplastic will reduce 2.5 times their material consumption, extend the 10-15 C temperature ...
Y. N. Ribakov   +2 more
doaj  

Existence for viscoplastic contact with Coulomb friction problems

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2002
We present existence results in the study of nonlinear problem of frictional contact between an elastic-viscoplastic body and a rigid obstacle. We model the frictional contact both by a Tresca's friction law and a regularized Coulomb's law. We assume, in
Amina Amassad, Caroline Fabre
doaj   +1 more source

Flexoelectricity in Photoconversion: Fundamentals, Materials, and Outlooks

open access: yesAdvanced Science, EarlyView.
Mechanical bending of a flexible cantilever induces a strain gradient in the photoactive material. The resulting flexoelectric field couples with photovoltaic and photoconductive effects, modulating charge generation, separation, and collection. A comparative analysis of oxide perovskites, halide perovskites, and two‐dimensional materials is presented,
Xiang Huang, Feng Li, Rongkun Zheng
wiley   +1 more source

A Portable Soft Robotic Glove with Fully Functional Thumb Assistance for Complex Dexterous Fine Motor Skills

open access: yesAdvanced Science, EarlyView.
A portable, sensorized, and controlled dexterous thumb‐enhanced glove helps stroke survivors swipe phones, twist caps, and perform other tasks. It is based on a powerful continuously, segmented origami dual chamber actuator to achieve active thumb CMC and MCP joint assistance and passively extend the IP joint.
Disheng Xie   +10 more
wiley   +1 more source

The Impact of Unilateral Divorce on Crime [PDF]

open access: yes
In this paper, we evaluate the impact of unilateral divorce on crime. First, using crime rates from the FBI’s Uniform Crime Report program for the period 1965-1998 and differences in the timing in the introduction of the reform, we find that unilateral ...
Giolito, Eugenio P.   +1 more
core   +2 more sources

NEW APPROACHES TO THE ASSESSMENT OF FUEL-RESISTANT POLYMER MATERIALS

open access: yesНаучный вестник МГТУ ГА, 2016
The basis of the proposed methodology is the evaluation of the barrier and physico-mechanical properties of structural polymeric material after the unilateral oil exposure at the alleged exploitation of the climatic region.
Yu. N. Ribakov   +3 more
doaj  

Modelling of contact interaction of structures with the base under dynamic loading

open access: yesИнженерно-строительный журнал, 2019
Constructively nonlinear problems with unilateral constraints are frequent in the calculation of various structures. At the same time, certain difficulties cause problems with the contact friction, as well as with the dynamic action of the load.
Anatoliy Lukashevich
doaj   +1 more source

Absorption of Broadband Low‐Frequency Sound Beyond the Thermodynamics Limit: An Acoustic Resonator With Magnetic Bearing

open access: yesAdvanced Science, EarlyView.
This work presents a magnetic‐bearing acoustic resonator that overcomes the thermodynamics limit of sound absorption. By introducing tunable negative stiffness, it achieves broadband low‐frequency absorption within a compact cavity, far exceeding the performance achievable by classic mass‐tuned designs.
Ying Hu   +5 more
wiley   +1 more source

A Miniscleral Contact Lens Fitting in a Patient of Unilateral Terrien’s Marginal Degeneration

open access: yesDelhi Journal of Ophthalmology
To present the management of corneal ectasia using miniscleral contact lenses. A 22-year-old male presented with unilateral terrien’s corneal degeneration and was visually rehabilitated with miniscleral contact lenses.
Parul Jain   +4 more
doaj   +1 more source

Tykhonov Well-Posedness and Convergence Results for Contact Problems with Unilateral Constraints

open access: yesTechnologies, 2020
This work presents a unified approach to the analysis of contact problems with various interface laws that model the processes involved in contact between a deformable body and a rigid or reactive foundation.
Mircea Sofonea, Meir Shillor
doaj   +1 more source

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