Results 11 to 20 of about 3,328,221 (312)

Radiation characteristics of corner reflector antennas. [PDF]

open access: yes, 1998
PhDThis thesis presents a study of the radiation characteristics of corner reflector antennas. The influence of the design parameters on the radiation characteristics are assessed using an analytical method and the Finite Difference Time Domain (FDTD)
Sterr, U.
core   +4 more sources

Palm Tree Coplanar Vivaldi Antenna Array on the Same Substrate Size: Design and Performance Evaluation

open access: yesInternational Journal of Electronics and Communications System, 2022
This paper aims to describe the performance of the palm tree Coplanar Vivaldi Antenna Array (CVA) that was simulated from 0.25-6.25 GHz in terms of return loss and radiation pattern.
Nurhayati Nurhayati   +3 more
doaj   +1 more source

Lymphocyte Depletion Rate as a Biomarker of Radiation Dose to Circulating Lymphocytes During Fractionated Partial-Body Radiation Therapy [PDF]

open access: yes, 2022
PURPOSE: Radiation causes exponential depletion of circulating lymphocyte populations; in turn, radiation-induced lymphopenia is associated with worse survival for many solid tumors, possibly owing to attenuated antitumor immune responses.
Mohan, Radhe   +9 more
core   +1 more source

Education and Training Needs in the Radiation Sciences: Problems and Potential Solutions [PDF]

open access: yes, 2015
This article provides a summary of presentations focused on critical education and training issues in radiation oncology, radiobiology and medical physics from a workshop conducted as part of the 60th Annual Meeting of the Radiation Research Society held
Deye, James   +5 more
core   +1 more source

Enhancing the Radiation Pattern of Circularly Polarized Dielectric Rod Antenna Using Planar Excitation Method

open access: yesIEEE Access, 2023
In this article, by placing a teflon tube around a circularly polarized dielectric resonator antenna, a dielectric rod antenna with a directive radiation pattern is obtained.
Saeed Fakhte, Ladislau Matekovits
doaj   +1 more source

Modeling the radiation pattern of LEDs

open access: yesOptics Express, 2008
Light-emitting diodes (LEDs) come in many varieties and with a wide range of radiation patterns. We propose a general, simple but accurate analytic representation for the radiation pattern of the light emitted from an LED. To accurately render both the angular intensity distribution and the irradiance spatial pattern, a simple phenomenological model ...
Ivan, Moreno, Ching-Cherng, Sun
openaire   +2 more sources

Genomic Loss and Epigenetic Silencing of the FOSL1 Tumor Suppressor Gene in Radiation-induced Neoplastic Transformation of Human CGL1 Cells Alters the Tumorigenic Phenotype In Vitro and In Vivo

open access: yes, 2023
The CGL1 human hybrid cell system has been utilized for many decades as an excellent cellular tool for investigating neoplastic transformation. Substantial work has been done previously implicating genetic factors related to chromosome 11 to the ...
Boreham, Douglas R.   +21 more
core   +1 more source

STEERABLE TOROIDAL BIFOCAL LENS-ARRAY ANTENNA IN 57–64 GHZ RANGE

open access: yesИзвестия высших учебных заведений России: Радиоэлектроника, 2019
Introduction. Currently, one of the most promising approaches to the development of 5th generation mobile wireless systems is the deployment of heterogeneous networks based on existing LTE cellular systems having both large and small cells.
Alexander A. Maltsev   +3 more
doaj   +1 more source

The Radiation Pattern on an Ultrasonic Focusing Radiator [PDF]

open access: yesThe Journal of the Acoustical Society of America, 1947
A focusing quartz radiator made in the form of a concave-convex lens of constant thickness (and being X-cut on the axis) should radiate spherical sound waves which focus at the center of curvature of the radiator surfaces. Because of wave diffraction, the focus should deviate from infinitely sharp in the same manner as is well known in the optical ...
openaire   +1 more source

Development of concept of near-field technology in designing effective small-aperture microwave antennas [PDF]

open access: yesРадиофизика и электроника, 2019
Subject and purpose. This article is devoted to the review of the original works of the authors on studying the effective small-sized individual radiators of various types using near-field technology. Methods and methodology.
I. Ivanchenko   +5 more
doaj   +1 more source

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