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32篇 您的检索式:作者名="He Junjun"
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1An efficient range-free localization algorithm for wireless sensor networks显示文摘Node positioning is a fundamental problem in applications of wireless sensor networks (WSNs). In this paper, a new range-free algorithm, called spring swarm localization algorithm (SSLA), is proposed for positioning WSNs. To determine the locations of sensor nodes, the proposed algorithm uses network topology information and a small fraction of sensor nodes which know their locations. Numerical simulations show that high positioning accuracy can be obtained by using the algorithm. Some examples are given to illustrate the effectiveness of the algorithm.HE QinBin CHEN FangYue CAI ShuiMing HAO JunJun LIU ZengRong 2011Science China(Technological Sciences)2011,54,5:13
2Exosomes:key players in cancer and potential therapeutic strategy显示文摘Exosomes are extracellular vesicles secreted by most eukaryotic cells and participate in intercellular communication.The components of exosomes,including proteins,DNA,mRNA,microRNA,long noncoding RNA,circular RNA,etc.,which play a crucial role in regulating tumor growth,metastasis,and angiogenesis in the process of cancer development,and can be used as a prognostic marker and/or grading basis for tumor patients.Hereby,we mainly summarized as followed:the role of exosome contents in cancer,focusing on proteins and noncoding RNA;the interaction between exosomes and tumor microenvironment;the mechanisms that epithelial-mesenchymal transition,invasion and migration of tumor affected by exosomes;and tumor suppression strategies based on exosomes.Finally,the application potential of exosomes in clinical tumor diagnosis and therapy is prospected,which providing theoretical supports for using exosomes to serve precise tumor treatment in the clinic.Jie Dai Yangzhou Su Suye Zhong Li Cong Bang Liu Junjun Yang Yongguang Tao Zuping He Chao Chen Yiqun Jiang 2020Signal Transduction and Targeted Therapy2020,5,1:8
3Metabolic characteristics and nutrient utilization in high-feedefficiency pigs selected using different feed conversion ratio models显示文摘An understanding of the nutrient utilization characteristics of pigs with different feed efficiencies(FEs) will help us to develop new strategies to reduce the costs of pig production.In this study,we selected pigs with a range of FEs according to two feed conversion ratio models: the feed intake(FI) model,where pigs had the same average daily gains(ADGs) but different FIs,and the ADG model,where pigs had the same FIs but different ADGs.High-FE pigs had a higher abundance of short chain fatty acid(SCFA)-producing bacteria(Lachnospiraceae,Clostridiaceae1,and Coriobacteriaceae) in their caecum in the FI model,and low-FE pigs had a higher abundance of two families(BacteroidalesS247group and Peptococcaceae) and two genera(Anaerotruncus and CandidatusSoleaferrea) in both models.By contrast,high-FE pigs had more goblet cells and higher m RNA expression of insulin-like growth factor 1(IGF-1) in the FI model,and higher mRNA expression of occludin but lower expressions of adenosine monophosphate-activated protein kinase(AMPK)-α2 and peroxisome proliferator-activated receptor gamma coactivator 1 alpha(PGC1α) in the ADG model.These findings suggest that the presence of SCFA-producing bacteria in the caecum and increased muscular growth may contribute to the high FE of low-FI pigs,while improved intestinal functions and decreased mitochondrial activity in the skeletal muscle are related to the high FE of high-ADG pigs.Beibei He Tiantian Li Wei Wang Hang Gao Yu Bai Shuai Zhang Jianjun Zang Defa Li Junjun Wang 2019Science China(Life Sciences)2019,62,7:5
4Structural shifts in the intestinal microbiota of rats treated with cyclosporine A after orthotropic liver transplantation显示文摘Understanding the effect of immunosuppressive agents on intestinal microbiota is important to reduce the mortality and morbidity from orthotopic liver transplantation (OLT). We investigated the relationship between the commonly used immunosuppressive agent cyclosporine A (CSA) and the intestinal microbial variation in an OLT model. The rat samples were divided as follows:(1) N group (normal control);(2) I group (isograft LT, Brown Norway [BN] rat to BN);(3) R group (allograft LT, Lewis to BN rat);and (4) CSA group (R group treated with CSA). The intestinal microbiota was assayed by denaturing gradient gel electrophoresis profiles and by using real-time polymerase chain reaction. The liver histopathology and the alanine/aspartate aminotransferase ratio after LT were both ameliorated by CSA. In the CSA group, the numbers of rDNA gene copies of Clostridium cluster I, Clostridium cluster XIV, and Enterobacteriaceae decreased, whereas those of Faecalibacterium prausnitzii increased compared with the R group. Cluster analysis indicated that the samples from the N, I, and CSA groups were clustered, whereas the other clusters contained the samples from the R group. Hence, CSA ameliorates hepatic graft injury and partially restores gut microbiota following LT, and these may benefit hepatic graft rejection.Junjun Jia Xinyao Tian Jianwen Jiang Zhigang Ren Haifeng Lu Ning He Haiyang Xie Lin Zhou Shusen Zheng 2019Frontiers of Medicine2019,13,4:5
5Analytic estimation and numerical modeling of actively cooled thermal protection systems with nickel alloys显示文摘Actively cooled thermal protection system has great influence on the engine of a hypersonic vehicle, and it is significant to obtain the thermal and stress distribution in the system. So an analytic estimation and numerical modeling are performed in this paper to investigate the behavior of an actively cooled thermal protection system. The analytic estimation is based on the electric analogy method and finite element analysis(FEA) is applied to the numerical simulation. Temperature and stress distributions are obtained for the actively cooled channel walls with three kinds of nickel alloys with or with no thermal barrier coating(TBC). The temperature of the channel wall with coating has no obvious difference from the one with no coating, but the stress with coating on the channel wall is much smaller than that with no coating. Inconel X-750 has the best characteristics among the three Ni-based materials due to its higher thermal conductivity, lower elasticity module and greater allowable stress. Analytic estimation and numerical modeling results are compared with each other and a reasonable agreement is obtained.Wang Xinzhi He Yurong Zheng Yan Ma Junjun H. Inaki Schlaberg 2014Chinese Journal of Aeronautics2014,27,6:3
6Reconfigurable photovoltaic effect for optoelectronic artificial synapse based on ferroelectric p-n junction显示文摘Neuromorphic machine vision has attracted extensive attention on wide fields.However,both current and emerging strategies still suffer from power/time inefficiency,and/or low compatibility,complex device structure.Here we demonstrate a driving-voltage-free optoelectronic synaptic device using non-volatile reconfigurable photovoltaic effect based on MoTe_(2)/α-In_(2)Se_(3) ferroelectric p-n junctions.This function comes from the non-volatile reconfigurable built-in potential in the p-n junction that is related to the ferroelectric polarization inα-In_(2)Se_(3).Reconfigurable rectification behavior and photovoltaic effect are demonstrated firstly.Notably,the figure-of-merits for photovoltaic effect like photoelectrical conversion efficiency non-volatilely increases more than one order.Based on this,retina synapse-like vision functions are mimicked.Optoelectronic short-term and long-term plasticity,as well as basic neuromorphic learning and memory rule are achieved without applying driving voltage.Our work highlights the potential of ferroelectric p-n junctions for enhanced solar cell and low-power optoelectronic synaptic device for neuromorphic machine vision.Yanrong Wang Feng Wang Zhenxing Wang Junjun Wang Jia Yang Yuyu Yao Ningning Li Marshet Getaye Sendeku Xueying Zhan Congxin Shan Jun He 2021Nano Research2021,14,11:2
7China's battery electric vehicles lead the world:achievements in technology system architecture and technological breakthroughs显示文摘Developing new energy vehicles has been a worldwide consensus,and developing new energy vehicles characterized by pure electric drive has been China's national strategy.After more than 20 years of high-quality development of China's electric vehicles(EVs),a technological R&D layout of“Three Verticals and Three Horizontals”has been created,and technological advantages have been accumulated.As a result,China's new energy vehicle market has ranked first in the world since 2015.To systematically solve the key problems of battery electric vehicles(BEVs)such as“driving range anxiety,long battery charging time,and driving safety hazards”,China took the lead in putting forward a“system engineering-based technology system architecture for BEVs”and clarifying its connotation.This paper analyzes the research status and progress of the three core components of this architecture,namely,“BEV platform,charging/swapping station,and real-time operation monitoring platform”,and their key technological points.The three major demonstration projects of the 2008 Beijing Olympic Games,the 2022 Beijing Winter Olympics,and the intelligent and connected autonomous battery electric bus project are discussed to specify the applications of BEVs in China.The key research directions for upgrading BEV technologies remain to be further improving the vehicle-level all-climate environmental adaptability and all-day safety of BEVs,systematically solving the charging problem of BEVs and improving their application convenience,and safeguarding safety with early warning and implementing active/passive safety protection for the whole life cycle of power batteries on the basis of BEVs'operation big data.BEVs have acquired new technological features such as intelligent and networked technology empowerment,extensive integration of control-by-wire systems,a platform of chassis hardware,and modularization of functional software.Hongwen He Fengchun Sun Zhenpo Wang Cheng Lin Chengning Zhang Rui Xiong Junjun Deng Xiaoqing Zhu Peng Xie Shuo Zhang Zhongbao Wei Wanke Cao Li Zhai 2022Green Energy and Intelligent Transportation2022,1,1:2
8Effect of anaerobic reaction time on denitrifying phosphorus removal and N 2 O production显示文摘Yayi Wang Junjun Geng Zhongjia Ren Weitao He Meiyan Xing Min Wu Shaowei Chen 2011Bioresource Technology2011,,10:1
9Exponential synchronization of complex networks with nonidentical time-delayed dynamical nodes显示文摘CAI Shuiming HE Qinbin HAO Junjun LIU Zengrong 0,,25:1
10Exponential synchronization of complex delayed dynamical networks via pinning periodically intermittent control显示文摘CAI SHUIMING HAO JUNJUN HE QINBIN 2011Physics Letters A2011,375,19:1
11Comparison of MODIS-Based Models for Retrieving Suspended Particulate Matter Concentrations in Poyang Lake, China显示文摘Wu Guofeng Cui Lijuan He Junjun 2013International Journal of Applied Earth Observations and Geoinformation2013,24,:1
12One-to-one quantum dot-labeled single long DNA probes显示文摘Shibin He Bi-Hai Huang Junjun Tan Qing-Ying Luo Yi Lin Jun Li Yong Hu Lu Zhang Shihan Yan Qi Zhang Dai-Wen Pang Lijia Li 2011Biomaterials2011,,23:1
13Bend family proteins mark chromatin boundaries and synergistically promote early germ cell differentiation显示文摘Understanding the regulatory networks for germ cell fate specification is necessary to developing strategies for improving the efficiency of germ cell production in vitro.In this study,we developed a coupled screening strategy that took advantage of an arrayed bi-molecular fluorescence complementation(BiFC)platform for protein-protein interaction screens and epiblast-like cell(EpiLC)-induction assays using reporter mouse embryonic stem cells(mESCs).Investigation of candidate interaction partners of core human pluripotent factors OCT4,NANOG,KLF4 and SOX2 in EpiLC differentiation assays identified novel primordial germ cell(PGC)-inducing factors including BEN-domain(BEND/Bend)family members.Through RNA-seq,ChIP-seq,and ATAC-seq analyses,we showed that Bend5 worked together with Bend4 and helped mark chromatin boundaries to promote EpiLC induction in vitro.Our findings suggest that BEND/Bend proteins represent a new family of transcriptional modulators and chromatin boundary factors that participate in gene expression regulation during early germline development.Guang Shi Yaofu Bai Xiya Zhang Junfeng Su Junjie Pang Quanyuan He Pengguihang Zeng Junjun Ding Yuanyan Xiong Jingran Zhang Jingwen Wang Dan Liu Wenbin Ma Junjiu Huang Zhou Songyang 2022Protein & Cell2022,13,10:1
14Exponen- tial synchronization of complex delayed dynamical net- works via pinning periodically intermittent control 显示文摘Cai Shuiming Hao Junjun He Qinbin 2011Physics Letters A2011,375,:1
15A potential substitution of noble metal Pt by perovskite LaCoO3 in ZrTiO4 supported lean-burn NOx trap catalysts 显示文摘He Xiaoxia Meng Ming He Junjun 2010Ca- talysis Communications2010,12,3:1
16Exponential synchronization of complex networks with nonidentical time-delayed dynamical nodes显示文摘Cai Shuiming He Qinbin Hao Junjun 2010Physics Letters A2010,374,:1
17Fabrication of magnetic carbon composites from peanut shells and its application as a heterogeneous Fenton catalyst in removal of methylene blue显示文摘Zhou Lincheng Ma Junjun Zhang He 2015Applied Surface Science2015,324,:1
18Single-walled carbon nanotubes selectively influence maize root tissue development accompanied by the change in the related gene expression显示文摘Shihan Yan Lin Zhao Hui Li Qi Zhang Junjun Tan Min Huang Shibin He Lijia Li 2013Journal of Hazardous Materials2013,,:1
19LRH-1 senses signaling from phosphatidylcholine to regulate the expansion growth of digestive organs via synergy with Wnt/β-catenin signaling in zebrafish显示文摘Liver receptor homolog-1(LRH-1)is an orphan nuclear receptor that is critical for the growth and proliferation of cancer cells and other biological processes,including lipid transportation and metabolism,sexual determination and steroidogenesis.However,because homozygous lrh-1^(-/-) mice die in utero,the regulatory mechanisms involved in embryonic development mediated by this receptor are poorly understood.In the present study,we performed transcription activator-like effector nuclease(TALEN)-mediated loss-of-function assays,taking advantage of zebrafish external fertilization,to investigate the function of lrh-1.The digestive organs were affected by lrh-1 depletion as a result of cellcycle arrest(at the checkpoint of G1 to S phase),but not cell apoptosis.Biochemical analysis revealed that LRH-1 augments the transcriptional activity of b-catenin 1 and 2 via physical interactions.Screening the specific ligand(s)sensed by LRH-1 during organogenesis revealed that phosphatidylcholine(PC),a potential ligand,is the upstream target of LRH-1 during endoderm development.These data provide evidence for the crosstalk between the PC/LRH-1 and Wnt/β-catenin signaling pathways during the expansion growth of endoderm organs.Gang Zhai Jia Song Tingting Shu Junjun Yan Xia Jin Jiangyan He Zhan Yin 2017Journal of Genetics and Genomics2017,44,6:0
20Steering of second-harmonic emission by the mode-selective excitation in a hybrid waveguide显示文摘Realization of the efficient steering for photons streams from nano sources is essential for further progress in integrated photonic circuits,especially when involving nonlinear sources.In general,steering for nonlinear sources needs additional optical control elements,limiting their application occasions as photonic devices.Here,we propose a simple and efficient beam steering scheme for the second-harmonic(SH)emission in the hybrid waveguide(consisting of CdSe nanobelts on the Au film)by mode-selective excitation.Adjusting the position of the incident beam illuminating on the tapered waveguide,the excitation types of guided modes can be selected,realizing the directionality control of SH emission.Stable steering of 6.1°for the SH emission is observed when the interference modes change from TE_(00)&TE_(01)to TE_(00)&TE_(02),which is confirmed by SH Fourier imaging and simulations.Our approach gets rid of the complex structural design and provides a new idea for beam steering of nonlinear optical devices with various nonlinear wavefronts.JUNJUN SHI XIAOBO HE YANG LI HONGXING XU 2022Photonics Research2022,10,12:0
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