Results 31 to 40 of about 173,444 (351)

Assessment of efficacy and maintenance of light-curing units in dental offices across Punjab: A clinical survey

open access: yesIndian Journal of Dental Sciences, 2019
Aims and Objectives: Curing units in dental offices across Punjab are analyzed for a practical purpose. Materials and Methods: One thousand light-curing units regularly used by the dentists in dental offices across the state of Punjab were examined for ...
Rajinder Bansal   +5 more
doaj   +1 more source

Feasibility study on application of microwave radiometry to monitor contamination level on insulator materials [PDF]

open access: yes, 2016
This paper introduces a novel method for monitoring contamination levels on high voltage insulators based on microwave radiometry. Present contamination monitoring solutions for high voltage insulators are only effective in predicting flashover risk when
Jiang, Y.   +5 more
core   +2 more sources

A new 147-56 hPa water vapor product from the UARS Microwave Limb Sounder [PDF]

open access: yes, 2004
Measurements of H2O in the tropopause region have been obtained by production of a new data set from the Microwave Limb Sounder (MLS) on the Upper Atmosphere Research Satellite (UARS).
Barath   +27 more
core   +2 more sources

Design of Cavity-Backed Bow-Tie Antenna with Matching Layer for Human Body Application

open access: yesSensors, 2019
This paper presents the broadband antenna for the microwave radiometric sensing of internal body temperature. For broadband operation, the bow-tie antenna was designed and backed with a cylindrical cavity, which decreased environmental electromagnetic ...
Jinho Jeong, Kihoon Park, Changmin Lee
doaj   +1 more source

Developing in situ Non-Destructive Estimates of Crop Biomass to Address Issues of Scale in Remote Sensing

open access: yesRemote Sensing, 2015
Ground-based estimates of aboveground wet (fresh) biomass (AWB) are an important input for crop growth models. In this study, we developed empirical equations of AWB for rice, maize, cotton, and alfalfa, by combining several in situ non-spectral and ...
Michael Marshall, Prasad Thenkabail
doaj   +1 more source

Electromagnetic compatibility of passive and active channels of integration radar systems [PDF]

open access: yesРадиофизика и электроника, 2020
Subject and Purpose. The paper is devoted to the noise immunity problem of the receiving channel of the radiometer as part of an integration passive-active radar system.
I.M. Mytsenko, Yu.A. Pedenko
doaj   +1 more source

Preliminary Evaluation of the SMAP Radiometer Soil Moisture Product over China Using In Situ Data

open access: yesRemote Sensing, 2017
The Soil Moisture Active Passive (SMAP) satellite makes coincident global measurements of soil moisture using an L-band radar instrument and an L-band radiometer.
Yayong Sun   +7 more
semanticscholar   +1 more source

Evaluation of IMERG Data over Open Ocean Using Observations of Tropical Cyclones

open access: yesRemote Sensing
The IMERG data product is an optimal combination of precipitation estimates from the Global Precipitation Mission (GPM), making use of a variety of data types, primarily data from various spaceborne passive instruments.
Stephen L. Durden
doaj   +1 more source

Variability of Microwave Scattering in a Stochastic Ensemble of Measured Rain Drops

open access: yesRemote Sensing, 2018
While it has been proved that multiple scattering in the microwave frequencies has to be accounted for in precipitation retrieval algorithms, the effects of the random arrangements of drops in space has seldom been investigated.
Francisco J. Tapiador   +5 more
doaj   +1 more source

Soil Moisture Retrieval Using SMAP L-Band Radiometer and RISAT-1 C-Band SAR Data in the Paddy Dominated Tropical Region of India

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021
National Aeronautics and Space Administration's soil moisture active–passive (SMAP) mission potential to produce high-resolution soil moisture suffered adversely due to its L-band synthetic-aperture radar (SAR) failure.
Gurjeet Singh   +5 more
doaj   +1 more source

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