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31篇 您的检索式:作者名="Yanhua Cheng"
    题名 作者 年代 出处 被引量
1Rotor Strength Analysis of High-speed Permanent Magnet Synchronous Motors显示文摘为了对转子进行有效的冷却,在满足电机电磁性能的前提下,可通过减小保护套的厚度来尽可能增大定转子之间的气隙,因而必须对保护套和永磁体进行强度校核。将转子受力状况简化为平面应变问题,在此基础上推导出了两层过盈配合、三层过盈配合转子的应力场、应变场、位移场的解析公式,并利用有限元方法验证了解析公式的正确性。归纳了高速情况下热套式永磁转子强度设计准则,为转子的优化设计提供了理论依据。以一台额定转速120kr/min、10kW的高速永磁同步电机为例,给出了两种常用过盈配合高速电机转子的强度设计方法。CHENG Wenjie GENG Haipeng FENG Sheng YU Lie SUN Yanhua YANG Lihua 2012中国电机工程学报2012,32,27:21
2High Resolution Radar Real-Time Signal and Information Processing显示文摘Radar is an electronic device that uses radio waves to determine the range, angle, or velocity of objects. Real-time signal and information processor is an important module for real-time positioning, imaging, detection and recognition of targets. With the development of ultra-wideband technology, synthetic aperture technology, signal and information processing technology, the radar coverage, detection accuracy and resolution have been greatly improved, especially in terms of one-dimensional(1D) high-resolution radar detection, tracking, recognition, and two-dimensional(2D) synthetic aperture radar imaging technology. Meanwhile, for the application of radar detection and remote sensing with high resolution and wide swath, the amount of data has been greatly increased. Therefore, the radar is required to have low-latency and real-time processing capability under the constraints of size, weight and power consumption. This paper systematically introduces the new technology of high resolution radar and real-time signal and information processing. The key problems and solutions are discussed, including the detection and tracking of 1D high-resolution radar, the accurate signal modeling and wide-swath imaging for geosynchronous orbit synthetic aperture radar, and real-time signal and information processing architecture and efficient algorithms. Finally, the latest research progress and representative results are presented, and the development trends are prospected.Teng Long Tao Zeng Cheng Hu Xichao Dong Liang Chen Quanhua Liu Yizhuang Xie Zegang Ding Yang Li Yanhua Wang Yan Wang 2019China Communications2019,16,2:7
3Solid-state intramolecular motions in continuous fibers driven by ambient humidity for fluorescent sensors显示文摘One striking feature of molecular rotors is their ability to change conformation with detectable optical signals through molecular motion when stimulated.However,due to the strong intermolecular interactions,synthetic molecular rotors have often relied on fluid environments.Here,we take advantage of the solid-state intramolecular motion of aggregation-induced emission(AIE)molecular rotors and one-dimensional fibers,developing highly sensitive optical fiber sensors that respond to ambient humidity rapidly and reversibly with observable chromatic fluorescence change.Moisture environments induce the swelling of the polymer fibers,activating intramolecular motions of AIE molecules to result in red-shifted fluorescence and linear response to ambient humidity.In this case,polymer fiber provides a process-friendly architecture and a physically tunable medium for the embedded AIE molecules to manipulate their fluorescence response characteristics.Assembly of sensor fibers could be built into hierarchical structures,which are adaptive to diverse-configuration for spatial-temporal humidity mapping,and suitable for device integration to build light-emitting sensors as well as touchless positioning interfaces for intelligence systems.Yunmeng Jiang Yanhua Cheng Shunjie Liu Haoke Zhang Xiaoyan Zheng Ming Chen Michidmaa Khorloo Hengxue Xiang Ben Zhong Tang Meifang Zhu 2021National Science Review2021,8,4:3
4Rapid phenotypic evolution with shallow genomic differentiation during early stages of high elevation adaptation in Eurasian Tree Sparrows显示文摘Known as the‘third polar region’,the Qinghai-Tibet Plateau represents one of the harshest highland environments in the world and yet a number of organisms thrive there.Previous studies of birds,animals and humans have focused on well-differentiated populations in later stages of phenotypic divergence.The adaptive processes during the initial phase of highland adaptation remain poorly understood.We studied a human commensal,the Eurasian Tree Sparrow,which has followed human agriculture to the Qinghai-Tibet Plateau.Despite strong phenotypic differentiation at multiple levels,in particular in muscle-related phenotypes,highland and lowland populations show shallow genomic divergence and the colonization event occurred within the past few thousand years.In a one-month acclimation experiment investigating phenotypic plasticity,we exposed adult lowland tree sparrows to a hypoxic environment and did not observe muscle changes.Through population genetic analyses,we identified a signature of polygenic adaptation,whereby shifts in allele frequencies are spread across multiple loci,many of which are associated with muscle-related processes.Our results reveal a case of positive selection in which polygenic adaptation appears to drive rapid phenotypic evolution,shedding light on early stages of adaptive evolution to a novel environment.Yanhua Qu Chunhai Chen Ying Xiong Huishang She Yong E Zhang Yalin Cheng Shane DuBay Dongming Li Per G P Ericson Yan Hao Hongyuan Wang Hongfeng Zhao Gang Song Hailin Zhang Ting Yang Chi Zhang Liping Liang Tianyu Wu Jinyang Zhao Qiang Gao Weiwei Zhai Fumin Lei 2020National Science Review2020,7,1:2
5Integrated dynamic wet spinning of core-sheath hydrogel fibers for optical-to-brain/tissue communications显示文摘Hydrogel optical light-guides have received substantial interest for applications such as deep-tissue biosensors,optogenetic stimulation and photomedicine due to their biocompatibility,(micro)structure control and tissue-like Young’s modulus.However,despite recent developments,large-scale fabrication with a continuous synthetic methodology,which could produce core-sheath hydrogel fibers with the desired optical and mechanical properties suitable for deep-tissue applications,has yet to be achieved.In this study,we report a versatile concept of integrated light-triggered dynamic wet spinning capable of continuously producing core-sheath hydrogel optical fibers with tunable fiber diameters,and mechanical and optical propagation properties.Furthermore,this concept also exhibited versatility for various kinds of core-sheath functional fibers.The wet spinning synthetic procedure and fabrication process were optimized with the rational design of the core/sheath material interface compatibility[core=poly(ethylene glycol diacrylate-co-acrylamide);sheath=Ca-alginate],optical transparency,refractive index and spinning solution viscosity.The resulting hydrogel optical fibers exhibited desirable low optical attenuation(0.18±0.01 d B cm^(-1) with 650 nm laser light),excellent biocompatibility and tissue-like Young’s modulus(<2.60 MPa).The optical waveguide hydrogel fibers were successfully employed for deep-tissue cancer therapy and brain optogenetic stimulation,confirming that they could serve as an efficient versatile tool for diverse deep-tissue therapy and brain optogenetic applications.Guoyin Chen Gang Wang Xinrong Tan Kai Hou Qingshuo Meng Peng Zhao Shun Wang Jiayi Zhang Zhan Zhou Tao Chen Yanhua Cheng D Benjamin S.Hsiao Elsa Reichmanis Meifang Zhu 2021National Science Review2021,8,9:2
6Microbially influenced corrosion of stainless steel by marine bacterium Vibrio natriegens : (I) Corrosion behavior显示文摘Sha Cheng Jintao Tian Shougang Chen Yanhua Lei Xueting Chang Tao Liu Yansheng Yin 2008Materials Science & Engineering C2008,,3:1
7A mixed core for supercritical watercooled reactors 显示文摘CHENG Xu LIU Xiaojing YANG Yanhua 2007Nuclear Engineering and Technology2007,40,2:1
8Enrichment and purification of total flavonoids from Flos Populi extracts with macroporous resins and evaluation of antioxidant activities in vitro显示文摘Pengfei Wan Zunlai Sheng Qiang Han Yulin Zhao Guangdong Cheng Yanhua Li 2014Journal of Chromatography B2014,,:1
9CFD analysis of thermal-hydraulic behavior in SCWR typical flow channels显示文摘GU Hanyang CHENG Xu YANG Yanhua 2008Nuclear Engineering and Design2008,238,:1
10A mixed core for supercritical watercooled reactors显示文摘CHENG Xu LIU Xiaojing YANG Yanhua 2008Nuclear Engineering and Technology2008,40,:1
11Numerical analysis of turbulent mixed convection air flow in inclined plane channel with k-εtype turbulence model显示文摘Numerical study on turbulent mixed convection in inclined plane channels,from 15° to 90° (vertical),was carried out to examine the effect of inclination on fluid flow and heat transfer distributions.The turbulent air flows upward or downward into the duct with one wall heated from bottom.Calculation results with several kinds of k-εtype turbulence models were used to compare the experimental data with those in literatures to determine suitable model.The dependents of Nusselt number on the inclination angle of both the buoyancy-aided and buoyancy-opposed flow are discussed.XIE Zhengrui YANG Yanhua GU Hanyang CHENG Xu 2008Nuclear Science and Techniques2008,19,2:1
12Poly(I:C)preconditioning protects the heart against myocardial ischemia/reperfusion injury through TLR3/PI3K/Akt-dependent pathway显示文摘Emerging evidence suggests that Toll-like receptors(TLRs)ligands pretreatment may play a vital role in the progress of myocardial ischemia/reperfusion(I/R)injury.As the ligand of TLR3,polyinosinic-polycytidylic acid(poly(I:C)),a synthetic double-stranded RNA,whether its preconditioning can exhibit a cardioprotective phenotype remains unknown.Here,we report the protective effect of poly(I:C)pretreatment in acute myocardial I/R injury by activating TLR3/PI3K/Akt signaling pathway.Poly(I:C)pretreatment leads to a significant reduction of infarct size,improvement of cardiac function,and downregulation of inflammatory cytokines and apoptotic molecules compared with controls.Subsequently,our data demonstrate that phosphorylation of TLR3 tyrosine residue and its interaction with PI3K is enhanced,and protein levels of phospho-PI3K and phospho-Akt are both increased after poly(I:C)pretreatment,while knock out of TLR3 suppresses the cardioprotection of poly(I:C)preconditioning through a decreased activation of PI3K/Akt signaling.Moreover,inhibition of p85 PI3K by the administration of LY294002 in vivo and knockdown of Akt by siRNA in vitro significantly abolish poly(I:C)preconditioning-induced cardioprotective effect.In conclusion,our results reveal that poly(I:C)preconditioning exhibits essential protection in myocardial I/R injury via its modulation of TLR3,and the downstream PI3K/Akt signaling,which may provide a potential pharmacologic target for perioperative cardioprotection.Erya Chen Chan Chen Zhendong Niu Lu Gan Qiao Wang Ming Li XingWei Cai Rui Gao Sruthi Katakam Hai Chen Shu Zhang Ronghua Zhou Xu Cheng Yanhua Qiu Hai Yu Tao Zhu Jin Liu 2020Signal Transduction and Targeted Therapy2020,5,1:1
13Inhibitor of Growth 4 Induces Growth Suppression and Apoptosis in Glioma U87MG显示文摘Li Xiaomei Cai Limin Chen Hui Zhang Qingyuan Zhang Shujun Wang Yanhua Dong Yanyan Cheng Hui Qi Jiping 2009Pathobiology2009,,4:1
14Simultaneous measurement of temperature and strain using a single Bragg grating in a few-mode polymer optical fiber显示文摘Qiu Weiwei Cheng Xusheng Luo Yanhua 2013Journal of Lightwave Technology2013,31,14:1
15Susceptibility to neonicotinoids and risk of resistance development in the brown plantho- pper,Nilaparvata luger (Stl) ( Homoptera: DelpHacidae) 显示文摘YANHUA WANG J]N CHEN YU CHENG ZHU 2008Pest Ma- nagement Science2008,64,12:1
16Thermoanalysis of the permanent magnet rotor of the microturbine generator显示文摘Wenjie Cheng HaipengGeng Yanhua Sun Lihua Yang and Lie Yu 2014International Journal of Applied Electromagnetics and Mechanics2014,45,:1
17Construction of a high-density mutant population of Chinese cabbage facilitates the genetic dissection of agronomic traits显示文摘Chinese cabbage(Brassica rapa ssp.pekinensis)is an economically important vegetable crop throughout the world,especially in Asia.High-quality genome sequences are available for Chinese cabbage,but gene functional studies remain challenging.To promote functional genomic studies of Chinese cabbage,we generated an ethyl methane sulfonate(EMS)mutant population of~8000 M_(2) plants using the double haploid inbred line A03 as the parent.The genome of A03 was sequenced and used as a reference for high-throughput functional characterization of gene mutations at the whole-genome level.A total of 300 M_(2) to M_(5) EMS mutants were phenotypically screened and then sequenced,revealing 750629 SNPs and 46272 InDel mutations that cover 98.27%of all predicted genes in the A03 genome.A forward-genetics approach was successfully used to identify two genes with chloroplast-related functions that are responsible for the yellow leaf mutant trait.A reverse-genetics approach was also used to identify associations between mutations in five genes of the glucosinolate biosynthetic pathway and variations in glucosinolate content of the mutant plants.In addition,we built the Chinese cabbage EMS mutation database(CCEMD,www.bioinformaticslab.cn/EMSmutation/home)to increase the usability of this mutant population resource.In summary,we performed large-scale screening of a heading Chinese cabbage EMS mutant collection at the phenotypic and genotypic levels,which will facilitate gene mining of Chinese cabbage and might also be useful for the study of other Brassica crops.Xiaoxue Sun Xing Li Yin Lu Shan Wang Xiaomeng Zhang Kang Zhang Xiangjie Su Mengyang Liu Daling Feng Shuangxia Luo Aixia Gu Yu Fu Xueping Chen Shuxin Xuan Yanhua Wang Donghui Xu Shumin Chen Wei Ma Shuxing Shen Feng Cheng Jianjun Zhao 2022Molecular Plant2022,15,5:1
18Photocatalytic degradation of bisphenol A and dye by graphene-oxide/Ag 3 PO 4 composite under visible light irradiation显示文摘Cheng Wang Jiaxiang Zhu Xiangyang Wu Hui Xu Yanhua Song Jia Yan Yongxiu Song Haiyan Ji Kun Wang Huaming Li 2013Ceramics International2013,,:1
19Polymer-based hybrid materials and their application in personal health显示文摘With unprecedented properties and functions,polymer-based hybrid materials hold extremely important position in many fields.Here in this review,we summarized applications of polymer-based hybrid materials toward personal health.Firstly,theoretical calculation and in-situ visualization used to explore the interfacial interaction and formation of hybrid materials are introduced.Secondly,applications of polymer-based hybrid materials in personal health from proactive protection(anti-bacteria and harmful gas removal),health condition monitoring(breathing and sleep)to disease diagnosis(magnetic resonance imaging),and tissue therapy(dental restoration)are discussed.Additionally,aggregation-induced emission(AIE)organic molecules based optical sensors for personal security and polymer semiconductor for organic thin film transistors are simply discussed.Finally,we present the future tendency for preparing polymer-based hybrid materials that related with personal health.Ran Cao Yanhua Cheng Ruili Wang Jin Wen Liping Zhu Weiqing Kong Xiaolan Qiao Meifang Zhu 2023Nano Research2023,16,3:0
20Molecular Motions in Polymer Matrix for Microenvironment Sensing显示文摘Polymer science entails the structural study at multi-levels from nano-to micro-and mesoscale,which is highly important to transfer or even amplify the molecular information to macroscopic materials.Multiple polymer structural transitions from lower-order to higher-order superstructures are normally involved to achieve selective,efficient and sophisticated functions.Therefore,in-situ visualization of these processes is highly important,not only for fundamental understanding the structural evolution,but also for the optimization of the process flow during the materials processing.Fluorescence imaging based on aggregation-induced emission(AIE)provides an ideal tool that offers a simple,accurate,and easy-readable method to fulfill the above requirements.Owing to the twisted propeller-like structure of AIE luminogens(AIEgens),they show high fluorescence sensitivity to the surrounding microenvironment(e.g.,viscosity,rigidity,and polarity)through intramolecular motions.In this short review,we summarize the recent applications of AIEgens to serve as“built-in”sensors to analyze the process of polymerization,microphase separation,glass/vitrification transition,polymer solvation,crystallization,etc.The perspective on the future application of AIE technology in polymer engineering,especially fiber materials,is also discussed.GAO Mengyue CHENG Yanhua ZHANG Junyan XU Chengjian YU Xiaoxiao ZHU Meifang 2021Chemical Research in Chinese Universities2021,37,1:0
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