Results 21 to 30 of about 6,344 (211)

Nanooptical elements for visual verification

Scientific Reports, 2021
This paper focuses on the development of flat diffractive optical elements (DOEs) for protecting banknotes, documents, plastic cards, and securities against counterfeiting.
Alexander Goncharsky, Anton Goncharsky, Dmitry Melnik, Svyatoslav Durlevich   +3 more
doaj   +1 more source

MAPPING OF THE MICRORELIEF STRUCTURES USING TOPOGRAPHIC DATA [PDF]

Acta Geobalcanica, 2017
The paper describes case study, which we conducted using test area located in Central European Russia (Orel region, Suhaya Orlitsa river basin). The archived topographic (cartographic) data, data of topographic survey and satellite imagery were used as ...
Evgeny Panidi, Lubov Trofimetz, Julia Sokolova, Elena Kunaeva   +3 more
doaj   +1 more source

DETERMINATION OF THE POLISHING QUALITY IN THE WORKING CHANNEL OF THE DRAWING OF CARBIDE TOOLS PRODUCED BY OJSC «BSW – MANAGEMENT COMPANY OF HOLDING «BMC»

Литьë и металлургия, 2018
The quality of the drawing tool depends on the quality of the channel. Channel processing is carried out in order to obtain the desired geometric shape, required size and limit deviations in accordance with the size and quality of the wire stretched, as ...
T. P. Kurenkova, I. V. Borisovets, I. P. Lazebnikova   +2 more
doaj   +1 more source

Ultrasonic Surface Treatment of Titanium Alloys. The Submicrocrystalline State [PDF]

, 2015
The paper presents the results of the research on improvement of physical-and mechanical properties of titanium alloys VT1-0 and VT6 by modification of surfaces using ultrasonic treatment, and a comprehensive study of the microstructure and mechanical ...
Borozna, Vyacheslav Yurievich, Klimenov, Vasily Aleksandrovich, Klopotov, A. A., Vlasov, V. A.   +3 more
core   +1 more source

ESTIMATION OF EROSION ACTIVITY IN THE RAVINE COMPLEX OF ARABLE SLOPES

InterCarto. InterGIS, 2017
The paper describes the results of the evaluation of erosion on arable slopes (in the thalweg part of the ancient microravines, no more than 400 m in length).
L. N. Trofimetz, E. A. Panidi, T. L. Ivanekha, A. I. Petelko   +3 more
doaj   +1 more source

Prospecting of Architectural Features Using LiDAR‐UAV Technology, Deep Neural Networks and Visualization Techniques: A Case Study in Kuélap and Cambolín (NW Peru)

Archaeological Prospection, EarlyView.
ABSTRACT High‐resolution and accurate synoptic images of terrestrial topography, even in densely forested areas, have proven valuable for archaeology by enabling the identification and characterization of relief patterns associated with ancient human activities. This study presents a novel approach that integrates digital terrain models (DTMs) obtained
Jhon A. Zabaleta‐Santisteban, Rolando Salas López, Angel J. Medina‐Medina, Katerin M. Tuesta‐Trauco, Abner S. Rivera‐Fernandez, Nerci M. Noriega‐Salazar, José A. Sánchez‐Vega, Teodoro B. Silva‐Melendez, Marlen A. Grandez‐Alberca, Jhonsy O. Silva‐López, Nilton B. Rojas‐Briceño, Manuel Oliva‐Cruz, Alexander Cotrina‐Sanchez, Elgar Barboza   +13 more
wiley   +1 more source

Analysis of the directions of improving regular micro reliefs

Проблеми трибології
The article analyzes the features of planar regular microreliefs with the shape of grooves, the axis of which lies in a plane that is parallel or coincident with the surface on which the microrelief is formed and can be described by a periodic function ...
V.O. Dzyura, R.O. Bytsa
doaj   +1 more source

On the issue of the artistic casting production on an industrial scale

Литьë и металлургия, 2023
The article presents an analysis of the formation parameters of the microrelief of artistic casting. The direction for solving particular issues of improving the castings quality with high requirements for the accuracy of the surface relief is shown.
V. A. Emelyanov, O. V. Mikhailov, K. V. Martynov, S. S. Tkachenko   +3 more
doaj   +1 more source

Threshold Currents of Vacuum Arcs With Tungsten and Copper Cathodes

High Voltage, EarlyView.
ABSTRACT This paper presents the results of an experimental study aimed at determining the threshold current for triggering a vacuum arc discharge, the probability of arc ignition and the average arc operation time depending on the current for tungsten and copper electrodes.
P. S. Mikhailov, I. L. Muzyukin, I. V. Uimanov, D. L. Shmelev, S. A. Barengolts   +4 more
wiley   +1 more source

Correlation method of processing the image of the surface microrelief to determine its roughness

Физика волновых процессов и радиотехнические системы
Background. The analysis of the results of the use of various machines and mechanisms in the national economy has shown that the roughness of the microrelief of their working surfaces largely determines the reliability and durability of their operation ...
Alexey D. Abramov, Dmitry S. Klyuev
doaj   +1 more source