Results 61 to 70 of about 116,538 (254)

Assessment of the quality of Gate area rainfall data from a Nimbus-5 radiometer [PDF]

open access: yes
The quality of rainfall intensity estimates derived from passive microwave measurements by the electrically scanned microwave radiometer (ESMR-5) aboard the Nimbus 5 satellite are evaluated.
Cottrell, R. R., Knox, N.
core   +4 more sources

Metamaterial Antennas Enhance MRI of the Eye and Occipital Brain

open access: yesAdvanced Materials, EarlyView.
A radiofrequency antenna platform comprising planar and bend configurations is developed, incorporating structurally integrated epsilon‐negative metamaterial unit cells to enhance MRI. These antennas enable high‐resolution in vivo human MRI of the eye, orbit, and occipital brain. Comprehensive validation, including simulations, phantom experiments, SAR,
Nandita Saha   +14 more
wiley   +1 more source

Introduction to the special issue

open access: yesEuropean Journal of Remote Sensing, 2012
This Special Issue of the European Journal of Remote Sensing is devoted to the publication of a selection of papers presented at the Microwave Specialist Symposium on Microwave Remote Sensing 2010 of the Earth, Oceans, Ice, and Atmosphere of the URSI ...
Simonetta Paloscia, Giovanni Macelloni
doaj   +1 more source

Sensitivity Analysis of b-factor in Microwave Emission Model for Soil Moisture Retrieval: A Case Study for SMAP Mission

open access: yesRemote Sensing, 2010
Sensitivity analysis is critically needed to better understand the microwave emission model for soil moisture retrieval using passive microwave remote sensing data.
Dugwon Seo   +2 more
doaj   +1 more source

Antenna and radome loss measurements for MFMR and PMIS with appendix on MFMR/PMIS computer programs [PDF]

open access: yes
The NMSU/PSL radiometer antenna calibration facility is described, and the antenna and radome loss measurements made on the passive microwave imaging system and the multifrequency microwave radiometer are summarized.
Carver, K. R., Cooper, W. K.
core   +1 more source

Directional amplifier in an optomechanical system with optical gain

open access: yes, 2018
Directional amplifiers are crucial nonreciprocal devices in both classical and quantum information processing. Here we propose a scheme for realizing a directional amplifier between optical and microwave fields based on an optomechanical system with ...
Jiang, Cheng, Li, Yong, Song, L. N.
core   +1 more source

Counterion‐Controlled Photocatalytic Doping of Organic Semiconductors

open access: yesAdvanced Materials, EarlyView.
Counterion size is shown to actively control photocatalytic doping in organic semiconductors. Small anions suppress aggregation of acridinium photocatalysts, enhance electron transfer, and dramatically increase doping efficiency. This simple strategy enables conductivities up to 2000 S cm−1 in benchmark polymers, revealing counterions as a powerful yet
Tiefeng Liu   +16 more
wiley   +1 more source

The Evaluation of Single-Sensor Surface Soil Moisture Anomalies over the Mainland of the People’s Republic of China

open access: yesRemote Sensing, 2017
In recent years, different space agencies have launched satellite missions that carry passive microwave instruments on-board that can measure surface soil moisture.
Robert M. Parinussa   +6 more
doaj   +1 more source

Investigation of remote sensing techniques of measuring soil moisture [PDF]

open access: yes
Major activities described include development and evaluation of theoretical models that describe both active and passive microwave sensing of soil moisture, the evaluation of these models for their applicability, the execution of a controlled field ...
Blanchard, A. J.   +5 more
core   +1 more source

Breaking time-reversal symmetry with a superconducting flux capacitor

open access: yes, 2018
We present the design of a passive, on-chip microwave circulator based on a ring of superconducting tunnel junctions. We investigate two distinct physical realisations, based on either Josephson junctions (JJ) or quantum phase slip elements (QPS), with ...
Cole, Jared H.   +4 more
core   +1 more source

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