Results 21 to 30 of about 19,957 (216)

FORMATION OF CIRCULARLY POLARIZED WAVE BY THE OBLIQUE IMPEDANCE WIRE DIPOLE LOCATED OVER THE RECTANGULAR SCREEN

Radio Physics and Radio Astronomy, 2016
Purpose: The conditions for formation of a wave with circular polarization and extremely achievable field density amplitude in the set directions of the main observation planes in the far zone, radiated by the oblique impedance wire dipole located over ...
N. P. Yeliseyeva, S. L. Berdnik, V. A. Katrich, M. V. Nesterenko   +3 more
doaj   +1 more source

DIPOLE ANTENNAS WITH A SECTOR-SHAPED RADIATION PATTERN [PDF]

Radio Physics and Radio Astronomy
Subject and Purpose. The directivity characteristics of a dipole antenna when it is placed above and parallel to a perfectly conducting screen of rectangular shape are considered, aiming to theoretically study dipole antennas with sector-shaped radiation
M. M. Gorobets, N. P. Yeliseyeva, S. L. Berdnyk, O. M. Horobets   +3 more
doaj   +1 more source

Improved Wearable Devices for Dietary Assessment Using a New Camera System

Sensors, 2022
An unhealthy diet is strongly linked to obesity and numerous chronic diseases. Currently, over two-thirds of American adults are overweight or obese.
Mingui Sun, Wenyan Jia, Guangzong Chen, Mingke Hou, Jiacheng Chen, Zhi-Hong Mao   +5 more
doaj   +1 more source

Preparation and Performance Evaluation of Bamboo Lumber Prepared by Assembly and Glue-Curing of Naturally Arc-Shaped Segments with Finger Joints

BioResources, 2015
Using bamboo to replace wood has great significance for the protection of forests. This work presents the concept of the reorganization of arc bamboo sheet to produce recombined arc-segment bamboo lumber (RABL).
Jianbo Zhou, Lisheng Chen, Wansi Fu, Zhongjia Chen, Zhangrong Zhao, Wanli Cheng, Zhankuan Zhang   +6 more
doaj   +1 more source

Mechanical simulation for the bending process of the AMOLED panel pad

Journal of Information Display, 2023
Panel pad bending is a critical process to improve the screen-to-body ratio of an active-matrix organic light-emitting diode (AMOLED) panel. The failure analysis of the metal wirings is the key to ensure the reliability of signal transmission when the ...
Di Wu, Yongzhen Jia, Dunming Liao, Bo Zhang, Chen Liu, Ning Wang, Wenjing Peng, Liting Huang   +7 more
doaj   +1 more source

A free boundary seepage problem through earth dam withan impermeable screen

Известия высших учебных заведений: Проблемы энергетики, 2017
A water seepage problem through the rectangular earth dam with the presence of a vertical impermeable screen was studied in nonlinear formulation. A finite-difference scheme with a fixed mesh was used for discretization of mathematical equations with a ...
K. P. Kurtseva, E. G. Sheshukov, N. D. Yakimov   +2 more
doaj   +1 more source

NUMERICAL ESTIMATES OF ELECTRODYNAMICS PROCESSES IN THE INDUCTOR SYSTEM WITH AN ATTRACTIVE SCREEN AND A FLAT RECTANGULAR SOLENOID

Electrical engineering & Electromechanics, 2018
Purpose. To carry out numerical estimates of currents and forces in the investigated inductor system with an attractive screen (ISAS) and determine the effectiveness of the force attraction. Methodology.
E. A. Chaplygin, M. V. Barbashova, A. Yu. Koval   +2 more
doaj   +1 more source

Virtual Lab to run experiments of oscillations of a stretched rectangular membrane

Industrial Data, 2017
A Virtual Lab to run educational computer simulations of a vibrating membrane has been created. This educational virtual lab may be used to support some courses in the vibration engineering career. The module solves the 2D wave equation for a rectangular
Javier Montenegro Joo
doaj   +1 more source

A FABRY-PEROT METARESONATOR SUPPORTING TRAPPED-MODE RESONANCES [PDF]

Radio Physics and Radio Astronomy, 2021
Purpose: Investigation of the electrodynamic properties of a Fabry-Perot metaresonator formed by two parallel perfectly conducting, two-dimensionally periodic, two-element screens of finite thickness with rectangular holes.
A. V. Gribovsky
doaj   +1 more source

Finite Element Analysis of Air Flow and Temperature Distribution on Surface of a Circular Obstacle with Resistance and Orientation of Screen

Journal of Mathematics, 2021
Nonisothermal flow through the rectangular channel on a circular surface under the influence of a screen embedded at the middle of a channel at angles θ is considered.
Abid A. Memon, M. Asif Memon, Aisha M. Alqahtani, Kaleemullah Bhatti, Kamsing Nonlaopon, Ilyas Khan, Mulugeta Andualem   +6 more
doaj   +1 more source