Results 71 to 80 of about 333,895 (294)

Sources of type III solar microwave bursts

Solar-Terrestrial Physics, 2016
Microwave fine structures allow us to study plasma evolution in an energy release region. The Siberian Solar Radio Telescope (SSRT) is a unique instrument designed to examine fine structures at 5.7 GHz.
Zhdanov D.A., Lesovoi S.V., Tokhchukova S.Kh.   +2 more
doaj   +1 more source

Amplificador de baixo ruído CMOS porta comum para 2,4 GHZ [PDF]

, 2012
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia Elétrica, Florianópolis, 2009Este trabalho apresenta um projeto de um amplificador de baixo ruído (LNA - do inglês, Low Noise ...
Pereira, Maicon Deivid
core  

Long‐term assessment of the effect of OLR, HRT and temperature on domestic sewage treatment using AnMBR to enhance biomethane production

Biofuels, Bioproducts and Biorefining, EarlyView.
Abstract The objective of this study was to evaluate the potential of an anaerobic membrane bioreactor (AnMBR) to treat domestic sewage by removing organic matter and nutrients while producing biogas. AnMBRs combine anaerobic digestion with membrane filtration, and stand out for their low energy consumption, low sludge production and potential for ...
Rennio Felix de Sena, Renan Holmes Ramalho, Diógenes Klayton da Silva Dias, Ana Paula de Melo Targino, Cindy Deina Farto, Gilson Barbosa Athayde Jr.   +5 more
wiley   +1 more source

A Dual-Band 8-Antenna Array Design for 5G/WiFi 5 Metal-Frame Smartphone Applications

Micromachines
This paper presents a dual-band 8-port multiple-input multiple-output (MIMO) antenna specifically designed for fifth-generation (5G) smartphones, featuring two open-slot metal frames.
Huiyang Li, Shanshan Xiao, Lefei He, Qibo Cai, Gui Liu   +4 more
doaj   +1 more source

A Small Planar Antenna for 4G Mobile Phone Application

International Journal of Antennas and Propagation, 2016
The analysis and design of a small planar multiband antenna operating in the 4G frequency bands are presented. The numerical and experimental results demonstrated that the proposed antenna satisfies the requirement of 6 dB return loss for the impedance ...
Hu Jian-rong, Li Jiu-sheng, Wu Di
doaj   +1 more source

Compact multi-band frequency reconfigurable planar monopole antenna for several wireless communication applications

Journal of Electrical Systems and Information Technology, 2014
A compact reconfigurable multi-band monopole antenna is presented. To achieve frequency reconfigurability, a PIN diode is used. There are two states of switch.
M. Abou Al-Alaa, H.A. Elsadek, E.A. Abdallah   +2 more
doaj   +1 more source

Regulating Interfacial Water Structure on CoNi/MoN Heterostructures Boosts Electrocatalytic Nitrate Reduction to Ammonia

Carbon Energy, EarlyView.
The CoNi/MoN interface effect induces electron transfer from CoNi species to MoN nanosheets, in which electron‐enriched CoNi/MoN interface captures K+ to form K+‐H2O, facilitating H2O dissociation to provide *H for accelerating hydrogenation steps, while electron‐deficient CoNi nanoparticles enhances the NO3− adsorption and reduces the free energy ...
Xue Chen, Jianhui Yi, Guopeng Ding, Zixuan Feng, Qianling Wei, Chunyu Sui, Liqiang Zhang, Zhili Wang, Qing Jiang   +8 more
wiley   +1 more source

A safe reinforcement learning approach for autonomous navigation of mobile robots in dynamic environments

CAAI Transactions on Intelligence Technology, EarlyView., 2023
Abstract When deploying mobile robots in real‐world scenarios, such as airports, train stations, hospitals, and schools, collisions with pedestrians are intolerable and catastrophic. Motion safety becomes one of the most fundamental requirements for mobile robots.
Zhiqian Zhou, Junkai Ren, Zhiwen Zeng, Junhao Xiao, Xinglong Zhang, Xian Guo, Zongtan Zhou, Huimin Lu   +7 more
wiley   +1 more source

Sequential Pressurized Liquid Extraction of Food Matrices: Fractionation, Selectivity, and Scale‐Up

ChemFoodChem, EarlyView.
Sequential pressurized liquid extraction separates food‐processing side streams into chemically distinct fractions by changing solvent polarity and operating conditions across stages. Lipophilic and phenolic compounds are recovered selectively, while co‐extraction is reduced.
Derya Ozalp Unal
wiley   +1 more source

Additive Manufactured Compact Microwave Absorbers

IEEE Access
A high-performance, compact microwave absorber was created using Fused Deposition Modeling (FDM) 3D printing. Both a narrowband and a broadband absorber were created. The narrowband absorber was designed at 4.9 GHz, mid-band in WR-187 waveguide.
Gregory Peter Le Sage, Muhammad Shumail
doaj   +1 more source