Results 41 to 50 of about 2,251,211 (322)

Influence of Active Elements of a Operated Medium and External Actions on the Physical Nature and Mechanism of Formation of Nanostructured Wear-Resistant Materials in Zone of Contact of Metals at Friction

open access: yesУспехи физики металлов, 2003
Nanostructural materials, which are formed in structural phase transformations within the metal surface layers due to the friction in active mediums with active chemical elements and additional external influence of current pulses, are investigated by ...
V. V. Gors’ky, O. M. Grypachevs’ky, V. V. Tykhonovych, V. M. Uvarov
doaj   +1 more source

Electrophysiological Organization of the Eye of Aplysia [PDF]

open access: yes, 1969
The eye of Aplysia californica was studied by electrophysiological and histological methods. It has a central spheroidal lens which is surrounded by a retina composed of several thousand receptor cells which are replete with clear vesicles, pigmented ...
Jacklet, Jon W.
core   +1 more source

Relation between trees of fragmenting granules and supergranulation evolution

open access: yes, 2016
Context: The determination of the underlying mechanisms of the magnetic elements diffusion over the solar surface is still a challenge. Understanding the formation and evolution of the solar network (NE) is a challenge, because it provides a magnetic ...
Frank, Z.   +3 more
core   +2 more sources

Beyond Massive-MIMO: The Potential of Data-Transmission with Large Intelligent Surfaces

open access: yes, 2017
In this paper, we consider the potential of data-transmission in a system with a massive number of radiating and sensing elements, thought of as a contiguous surface of electromagnetically active material. We refer to this as a large intelligent surface (
Edfors, Ove, Hu, Sha, Rusek, Fredrik
core   +1 more source

Selective Lanthanide Sensing with Gold Nanoparticles and Hydroxypyridinone Chelators. [PDF]

open access: yes, 2020
The octadentate hydroxypyridinone chelator 3,4,3-LI(1,2-HOPO) is a promising therapeutic agent because of its high affinity for f-block elements and noncytotoxicity at medical dosages.
Abergel, Rebecca J   +5 more
core  

Resistance of concrete and expanded clay concrete under periodic external influences

open access: yesMATEC Web of Conferences, 2018
The purpose of the work is to increase resistance of concrete in conditions of multiple freezing-thawing and wetting-drying cycles. An important property of concrete is its ability to adapt to the periodical effect of external factors by self ...
Vyrovoy Valery   +3 more
doaj   +1 more source

Surface-active element transport and its effect on liquid metal flow in laser-assisted additive manufacturing [PDF]

open access: yesInternational Communications in Heat and Mass Transfer, 2017
Abstract During laser-assisted additive manufacturing, the transport phenomena, solidification behavior, and melt pool geometry are affected by base-metal sulfur content and oxygen present in the atmosphere. The role of these surface-active elements during metal-based additive manufacturing is not well understood. In this study, the mass transport of
Zhengtao Gan   +3 more
openaire   +1 more source

Marangoni driven turbulence in high energy surface melting processes

open access: yes, 2016
Experimental observations of high-energy surface melting processes, such as laser welding, have revealed unsteady, often violent, motion of the free surface of the melt pool.
Kenjereš, Saša   +3 more
core   +1 more source

The effect of alloying elements in Ti-5Mo-5V-8Cr-3Al alloy on growth kinetics of TiB whiskers in boride layer

open access: yesMaterials & Design, 2023
As one of the important ways to improve surface properties of Ti alloys, the boride layer prepared by the pack boriding is closely related to the growth and morphology of TiB whiskers in the boride layer, whereas the growth and morphology of TiB whiskers
Ancang Yang   +6 more
doaj   +1 more source

Plasmonic modes of extreme subwavelength nanocavities

open access: yes, 2010
We study the physics of a new type of subwavelength nanocavities. They are based on U-shaped metal-insulator-metal waveguides supporting the excitation of surface plasmon polaritons.
Andreas Tünnermann   +27 more
core   +1 more source

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