云南高校图书馆联盟文献共享服务平台- MULTI-FREQUENCY

MULTI-FREQUENCY: 作品数：89被引量：220H指数：8; 导出分析报告; 相关领域：电子电信更多>>; 相关作者：李莹刘战合高旭姬金祖武哲更多>>; 相关机构：中国航空工业集团公司北京航空航天大学成都理工大学中国石油化工股份有限公司更多>>; 相关期刊：更多>>; 相关基金：国家自然科学基金国家重点基础研究发展计划国家教育部博士点基金河北省自然科学基金更多>>

Multi-frequency formation mechanism and modulation strategy of self-priming enhanced submerged pulsed waterjet: 《International Journal of Mining Science and Technology》2025年第2期175-189,共15页Haojie Jia Yanwei Liu Weiqin Zuo Hongkai Han Ping Chang Mohammad Waqar Ali Asad Guozhong Hu Jian Miao Hani SMitri; supported by the program for National Natural Science Foundation of China (Nos. 52174173, 52274188, and 52104190);the Joint Funds of the National Natural Science Foundation of China (No. U24A2091);The Natural Science Foundation of Henan Polytechnic University (No. B2021-2);Double FirstClass Initiative of Safety and Energy Engineering (Henan Polytechnic University) (Nos. AQ20240703 and AQ20230304)。; Under submerged conditions, compared with traditional self-excited oscillating pulsed waterjets(SOPWs), annular fluid-enhanced self-excited oscillating pulsed waterjets(AFESOPWs) exhibit a higher surge pressure throug...; 关键词：MULTI-FREQUENCY Modulation SELF-PRIMING Submerged waterjet CAVITATION

Comprehensive comparison of cellulose nanocrystal (CNC) drying using multi-frequency ultrasonic technology with selected conventional drying technologies: 《Journal of Bioresources and Bioproducts》2024年第4期465-485,共21页Junli Liu Amir Malvandi Hao Feng; supported by the United States Department of Energy(grant No.DOE-DE-EE0009125).; Cellulose nanocrystals(CNCs)have garnered increased attention due to their renewable nature,abundant feedstock availbility,and good mechanical properties.However,one of the bottlenecks for its commercial production is...; 关键词：Cellulose nanocrystals Ultrasound Drying kinetics Drying energy Energy-efficient CO_(2) reduction Redispersibility Carbon sequestration

Multi-frequency smartphone positioning performance evaluation:insights into A-GNSS PPP-B2b services and beyond: 《Satellite Navigation》2024年第3期93-118,共26页Jiale Wang Chuang Shi Fu Zheng Cheng Yang Xu Liu Shuo Liu Ming Xia Guifei Jing Tuan Li Wu Chen Qingcheng Li Yong Hu Yuan Tian Yunfeng Shan; sponsored by the Fundamental Research Funds for the Central Universities (Grant No.YWF-23-JC-12);the National Nature Science Foundation of China (Grant No.42004026);03 Special and 5G Project of Jiangxi Province (Grant No.20224ABC03W03);Science and Technology Program of Yunnan Province (Grant No.202102AE090051).; In August 2023,Xiaomi unveiled the Redmi K60 Ultra,the first multi-frequency smartphone integrated with BeiDou-3 Navigation Satellite System Precise Point Positioning(PPP-B2b)services and employing PPP technology as t...; 关键词：Multi-frequency smartphone 3GPP LPP OMA SUPL Observation noise TTFF A-GNSS PPP-B2b OTDOA 3DMAGNSS NLOS

The Role of Body Composition Analyzer in the Preoperative Assessment of Breast Cancer Patients: 《Journal of Cancer Therapy》2024年第9期320-329,共10页Lijuan Zhang Qiaoling Zhong Yun Ding Jinlan Li Qinghua Luo Liping Zhang Yuezhou Guo Na Li Huizhen Zhang; Background: The segmental multi-frequency bioelectrical impedance analysis (SMF-BIA) is a useful method for evaluating physical health and nutritional status in various clinical settings. But less is known about its r...; 关键词：Breast Cancer Body Composition Tumor Stages Lymphatic Metastasis Multi-Frequency Bioelectrical Impedance Analysis

Frequency-dependent selectively oriented edge state topological transport: 《Advanced Photonics Nexus》2024年第3期32-39,共8页Jiajun Ma Chunmei Ouyang Yuting Yang Xinyue Qian Li Niu Yi Liu Quan Xu Yanfeng Li Zhen Tian Jianqiang Gu Jiaguang Han Weili Zhang; supported by the National Natural Science Foundation of China(Grant Nos.62175180,62005193,11874245,and 12004425);the National Key Research and Development Program of China(Grant No.2017YFA0701004);the Natural Science Foundation of Jiangsu Province(Grant No.BK20200630).; Valley topological photonic crystals(TPCs),which are robust against local disorders and structural defects,have attracted great research interest,from theoretical verification to technical applications.However,previou...; 关键词：multi-frequency topological device photonic valley Hall effect valley edge state photonic bandgap.

Fast measurement and prediction method for electromagnetic susceptibility of receiver被引量：1: 《Journal of Systems Engineering and Electronics》2024年第2期275-285,共11页CHEN Yan LU Zhonghao LIU Yunxia; supported by the National Natural Science Foundation of China(62071473).; Aiming at evaluating and predicting rapidly and accurately a high sensitivity receiver’s adaptability in complex electromagnetic environments,a novel testing and prediction method based on dual-channel multi-frequenc...; 关键词：electromagnetic susceptibility(EMS) RECEIVER dualchannel multi-frequency nonlinear response frequency domain power domain

High-resolution,multi-frequency and full-polarization radar database of small and group targets in clutter environment被引量：1: 《Science China(Information Sciences)》2023年第12期277-278,共2页Cheng HU Yujia YAN Rui WANG Qi JIANG Jiong CAI Weidong LI; supported by Special Fund for Research on National Major Research Instruments (Grant No.31727901)。; Detection of small low-altitude targets such as drone swarms,migrating insects and birds is crucial for both military and civilian applications[1].There exist two main challenges which significantly affect the radar d...; 关键词：polarization BURIED RESOLUTION

Multi-Frequency-Ranging Positioning Algorithm for 5G OFDM Communication Systems被引量：3: 《Chinese Journal of Electronics》2023年第4期773-784,共12页LI Wengang XU Yaqin ZHANG Chenmeng TIAN Yiheng LIU Mohan HUANG Jun; This work was supported by the National Natural Science Foundation of China(U21A20446).; The accurate determination of vehicle location is of great research significance,considering challenges such as the multipath environment and the absence of Global Navigation Satellite System(GNSS)signals.In this part...; 关键词：Vehicle location 5G Orthogonal frequency division multiplexing Multi-frequency ranging

Multi-mode Multi-frequency GNSS-IR Combination System for Sea Level Retrieval: 《Journal of Geodesy and Geoinformation Science》2023年第2期32-39,共8页Wenyue CHE Xiaolei WANG Xiufeng HE Jin LIU; National Natural Science Foundation of China(No.42004018)。; With the development of Global Navigation Satellite Systems(GNSS),geodetic GNSS receivers have been utilized to monitor sea levels using GNSS-Interferometry Reflectometry(GNSS-IR)technology.The multi-mode,multi-freque...; 关键词：GNSS-IR sea level retrieval multi-mode multi-frequency combination equation stability

面向三频WiFi应用的分集玻璃天线: 《Engineering》2023年第4期157-169,M0007,共14页胡鹏飞梁国华陆贵文潘咏梅郑少勇; supported in part by the Innovation and Technology Support Programme(ITSP)of the Innovation and Technology Commission(ITS/210/19);in part by the Young Scientists Fund of the National Natural Science Foundation of China(62001409);in part by Shenzhen-Hong Kong-Macao Science and Technology Project(Category C)(SGDX20210823104002018);in part by 2022 Guangdong-Hong Kong-Macao Joint Innovation Funding Scheme(2022A0505030021).; 本文研究了两种新型极化和模式分集玻璃介质谐振器天线(DRAs),用于三频段(2.4 GHz、5.2 GHz和5.8 GHz)无线保真(WiFi)应用。研究比较了这两种DRAs以及一种新型空间分集玻璃DRA,以确定哪种分集天线最适合WiFi路由器应用。同时,将这三种...; 关键词：Wireless fidelity Diversity antennas MULTI-FREQUENCY GLASS Dielectric resonator antennas Multiple-input multiple-output

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