Results 81 to 90 of about 1,457,599 (278)

A Physics-Based Method for Retrieving Land Surface Emissivities from FengYun-3D Microwave Radiation Imager Data

Remote Sensing
The passive microwave land surface emissivity (MLSE) plays a crucial role in retrieving various land surface and atmospheric parameters and in Numerical Weather Prediction models.
Fangcheng Zhou, Xiuzhen Han, Shihao Tang, Guangzhen Cao, Xiaoning Song, Binqian Wang   +5 more
doaj   +1 more source

Investigations on Input Impedance and Radiation Pattern of a UWB Antenna for Microwave Imaging

Qeios
Investigations carried out on the Input Impedance and Radiation Pattern of an Ultra-wideband (UWB) antenna are presented in this study. The proposed antenna is fabricated on an FR4 printed circuit board with a rectangular aperture. Major applications of UWB technology are presented.
Olayiwola Charles Adesoba, Richard Olalekan Taiwo   +1 more
openaire   +1 more source

Compact Metacavity Antenna With Enhanced Radiation Uniformity for Narrowband Microwave Computational Polarimetric Imaging [PDF]

IEEE Transactions on Antennas and Propagation
To facilitate microwave computational polarimetric imaging (MCPI) within a limited operating frequency bandwidth,a frequency-diverse compact metacavity antenna (CMA) using an aperture-rotation technique is proposed in this communication.The proposed CMA is fundamentally a cavity-based leaky-wave antenna, featuring a compact double-layer cavity and a ...
Mengran Zhao, Shitao Zhu, Junjia Zhang, Xiaoming Chen, Okan Yurduseven   +4 more
openaire   +1 more source

Surface‐Spin‐Induced Magnetic Loss Enhancement in Ultralight Electromagnetic Absorbers

Advanced Science, EarlyView.
Fe3O4 nanoparticles with different hollow rates were synthesized to demonstrate the key role of surface moment in magnetic loss process. Using the same volume filling ratio, the 54.1% hollow Fe3O4 absorber represents about 20% enhancement in the imaginary part (μ'') than solid particles due to the coexisting magnetic resonance of inside and outside ...
Ruimin Ren, Ke Yang, Chichong Lu, Song Ma, Bowen Zheng, Zhenhui Ma   +5 more
wiley   +1 more source

What does the future hold for microwave? "Microwave effect"

, 2015
Although we use microwave heating for chemical processes worth millions of dollars, the mechanism of the microwave heating is not very well understood. Progress in measuring local temperatures in microwave-heated transformations will allow us to search ...
MARINAKIS, S, Howard,, B
core   +1 more source

Modified MXene Aerogel With Broadband Microwave Absorption Inspired by Melanophila Acuminata Beetle

Advanced Science, EarlyView.
This work introduces a novel biomimetic strategy inspired by the infrared‐sensing sensilla of the Melanophila acuminata beetle. We have designed a multi‐level aerogel, featuring a three‐dimensional carbon framework decorated with synergistic CeO2 nanoparticles and Ti3C2Tx MXene nanosheets.
Zhiwei Liu, Dingyu Xu, Zhaobo Liu, Haitian Song, Qianqian Zhang, Junxiao Zhou, Xiewen Wen   +6 more
wiley   +1 more source

Overview of CMOS process and design options for image sensor dedicated to space applications [PDF]

, 2005
With the growth of huge volume markets (mobile phones, digital cameras…) CMOS technologies for image sensor improve significantly. New process flows appear in order to optimize some parameters such as quantum efficiency, dark current, and conversion gain.
Corbière, Franck, P. Magnan, P. Martin-Gonthier, F. Corbiere, Magnan, Pierre, Martin-Gonthier, Philippe   +5 more
core   +1 more source

TET1 Inhibition Promotes Therapeutic Sensitivity in TP53‐Mutant GBM by Influencing Genome Fragility and Altering TAMs Biology

Advanced Science, EarlyView.
In TP53mut GBM cells, reduced P53 function is associated with increased TET1 expression. Genetic or pharmacological inhibition of TET1 correlates with genome fragility, including DNA damage, cellular senescence, telomere shortening, and reactive oxygen species accumulation, which may contribute to increased efficacy of antitumor therapy.
Zhuonan Pu, Jinqiu Liu, Yuxuan Deng, Shuyu Hao, Xiaoli Zhang, Mingxu Yang, Chao Guo, Chao Du, Yingdan Chen, Tai Sun, Nan Ji, Zhengping Zhuang, Jie Feng   +12 more
wiley   +1 more source

Multi-mode coupling wave theory for helically corrugated waveguide [PDF]

, 2012
Helically corrugated waveguide has been used in various applications such as gyro-backward wave oscillators, gyro-traveling wave amplifier and microwave pulse compressor.
Ronald K, Donaldson CR, He, Wenlong, Young, Alan R., Whyte, Colin G., Robertson, Craig W., Phelps ADR, Phelps, Alan D. R., Zhang L, Ronald, Kevin, Craig R. Donaldson, Kevin Ronald, Whyte CG, Young AR, Liang Zhang, Cross AW, Zhang, Liang, Donaldson, Craig R., Colin G. Whyte, Adrian W. Cross, Alan R. Young, He W, Robertson CW, Craig W. Robertson, Cross, Adrian W., Wenlong He, Alan D. R. Phelps   +26 more
core   +1 more source

Rare‐Earth–Sulfur Surface Modification Enables SiC Ceramics for Low‐Frequency Electromagnetic Wave Absorption in Extreme Environments

Advanced Science, EarlyView.
By altering surface chemical bonds to prolong relaxation time and shift absorption to lower frequencies, SiC/rare earth–sulfur (RE─S, RE = La, Ce, Pr, Sm, Gd, Er) materials achieve excellent low‐frequency electromagnetic wave absorption under extreme conditions, offering a new direction for designing high‐performance SiC‐based absorbers.
Zhanming Wu, Xiaojun Zeng, Yu‐Nan Tan, Chi Yu, Nuohua Xie, Yanfeng Gao   +5 more
wiley   +1 more source