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27篇 您的检索式:作者名="Baile Chen"
    题名 作者 年代 出处 被引量
1Spatial and temporal variations of forest LAI in China during 2000-2010显示文摘Forests are crucial terrestrial ecosystems.Their leaf area index (LAI) is a key parameter determining the exchange of matter and energy between the atmosphere and the ground surface.In this study,MOD 09A1 and MCD 43A1 data were input into an inversion model based on the 4-scale geometric optical model to retrieve 8-d 500 m LAI products in China during the period 2000 to 2010.The resulting LAI product was validated using LAI measured in 6 typical areas.The spatial and temporal variations of forest LAI and its relationships with temperature and precipitation were analyzed.The results show that the accuracy of the 500 m LAI product was above 70% in the 6 typical areas,indicating the reliability of this product.From 2000 to 2010,forest LAI in northeast,north,and south central China showed increasing trends.However,forest LAI in southeast and parts of southwest China showed downward trends,mainly because of the significant decrease observed during the period 2008 to 2010.Annual mean forest LAI positively correlated with annual mean temperature (AMT) in northeastern China and negatively correlated with AMT in southwest China.It had positive correlations with annual total precipitation in central south and north China.The abnormal climate conditions in 2001 and 2009 caused forest LAI to be obviously lower than normal in regions south of the Qinling Mountains and Huaihe River.Annual mean LAI decreased by more than 1.0 in some areas.LIU YiBo JU WeiMin CHEN JingMing ZHU GaoLong XING BaiLing ZHU JingFang HE MingZhu 2012Chinese Science Bulletin2012,57,22:22
2Preliminary Experimental Investigation on MHD Power Generation Using Seeded Supersonic Argon Flow as Working Fluid显示文摘这篇论文在 magnetohydrodynamic (MHD ) 上论述初步的试验性的调查把播种的超声的氩流动用作工作液体的发电。氦和氩被用作司机并且在一条吃惊隧道分别地驾驶气体。平衡接触表面操作模式被用来获得高温度气体,并且传导性被增加种子 K2CO3 粉末进驾驶的节获得。在嘴入口总数压力的条件下面是 0.32 MPa,全部的温度 6 504 K,磁场密度大约 0.5 T 和嘴插头速度 1 959 m/s,正式就职电压和分割 MHD 发电隧道的电线走火电流被测量,并且试验性的结果同意理论计算;平均传导性是从电压和电流的特征计算的大约 20 S/m。当负担因素是 0.5 时, MHD 发电隧道的最大的力量密度到达 4.797 1 MW/m3,和最大的热含量抽取率是 0.34% 。最后,为煤气的州的参数的间接测试的原则和方法被导出并且分析。LI Yiwen LI Yinghong LU Haoyu ZHU Tao ZHANG Bailing CHEN Feng ZHAO Xiaohu 2011Chinese Journal of Aeronautics2011,24,6:11
3Microstructure and Mechanical Properties of Multilayer Ti(C,N) Films by Closed-field Unbalanced Magnetron Sputtering Ion Plating显示文摘Ti(C, N) multilayer films have been prepared by closed-field unbalanced magnetron sputtering technology and using graphite target as the C supplier. Microstructural observation results showed that the Ti(C, N) films exhibited multilayer structure with most of fine nano-columnar Ti(C, N) grains existing in the films. The current of graphite target had an effect remarkably on the multilayer structure of films: the periodical thickness gradually increased as the current went up, but the grain size of films gradually decreased and even amorphous phase appeared as the current further increased. The microstructure of Ti(C, N) films changed from columnar crystallite to nanocomposite in high current of graphite target where the fine Ti(C, N) grains were distributed uniformly in the amorphous Ti(C, N) matrix, and the volume fraction of the amorphous phase increased with increasing current. Measurement results showed that the Ti(C, N) multilayer films have high microhardness and low friction coefficient, and especially the film deposited in the current of 0.9 A exhibits superior properties with optimizing hardness and friction coefficient. Based on the relationship of the microstructure and the properties of films, the multilayer structure and fine grain size of Ti(C, N) films are responsible for their well mechanical and friction properties. And choosing the graphite target as the C supplier is more propitious to decrease the friction coefficients of films.Guojun Zhang Bin Li Bailing Jiang Dichun Chen Fuxue Yan 2010Journal of Materials Science & Technology2010,26,2:11
4Performing optical logic operations by a diffractive neural network显示文摘Optical logic operations lie at the heart of optical computing,and they enable many applications such as ultrahighspeed information processing.However,the reported optical logic gates rely heavily on the precise control of input light signals,including their phase difference,polarization,and intensity and the size of the incident beams.Due to the complexity and difficulty in these precise controls,the two output optical logic states may suffer from an inherent instability and a low contrast ratio of intensity.Moreover,the miniaturization of optical logic gates becomes difficult if the extra bulky apparatus for these controls is considered.As such,it is desirable to get rid of these complicated controls and to achieve full logic functionality in a compact photonic system.Such a goal remains challenging.Here,we introduce a simple yet universal design strategy,capable of using plane waves as the incident signal,to perform optical logic operations via a diffractive neural network.Physically,the incident plane wave is first spatially encoded by a specific logic operation at the input layer and further decoded through the hidden layers,namely,a compound Huygens’metasurface.That is,the judiciously designed metasurface scatters the encoded light into one of two small designated areas at the output layer,which provides the information of output logic states.Importantly,after training of the diffractive neural network,all seven basic types of optical logic operations can be realized by the same metasurface.As a conceptual illustration,three logic operations(NOT,OR,and AND)are experimentally demonstrated at microwave frequencies.Chao Qian Xiao Lin Xiaobin Lin Jian Xu Yang Sun Erping Li Baile Zhang Hongsheng Chen 2020Light(Science & Applications)2020,9,1:8
530 GHz GeSn photodetector on SOI substrate for 2 µm wavelength application显示文摘We report the demonstration of a normal-incidence p-i-n germanium-tin(Ge_(0.951)Sn_(0.049))photodetector on silicon-on-insulator substrate for 2μm wavelength application.The DC and RF characteristics of the devices have been characterized.A dark current density under−1 V bias of approximately 125 mA/cm^(2) is achieved at room temperature,and the optical responsivity of 14 mA/W is realized for illumination wavelength of 2μm under−1 V reverse bias.In addition,a 3 dB bandwidth(f_(3dB))of around 30 GHz is achieved at−3 V,which is the highest reported value among all group III–V and group IV photodetectors working in the 2μm wavelength range.This work illustrates that a GeSn photodetector has great prospects in 2μm wavelength optical communication.Xiuli Li Linzhi Peng Zhi Liu Zhiqi Zhou Jun Zheng Chunlai Xue Yuhua Zuo Baile Chen Buwen Cheng 2021Photonics Research2021,9,4:6
6Adaptive immune responses to SARS-CoV-2 infection in severe versus mild individuals显示文摘The global Coronavirus disease 2019(COVID-19)pandemic caused by SARS-CoV-2 has affected more than eight million people.There is an urgent need to investigate how the adaptive immunity is established in COVID-19 patients.In this study,we proled adaptive immune cells of PBMCs from recovered COVID-19 patients with varying disease severity using single-cell RNA and TCR/BCR V(D)J sequencing.The sequencing data revealed SARS-CoV-2-specic shufing of adaptive immune repertories and COVID-19-induced remodeling of peripheral lymphocytes.Characterization of variations in the peripheral T and B cells from the COVID-19 patients revealed a positive correlation of humoral immune response and T-cell immune memory with disease severity.Sequencing and functional data revealed SARS-CoV-2-specic T-cell immune memory in the convalescent COVID-19 patients.Furthermore,we also identied novel antigens that are responsive in the convalescent patients.Altogether,our study reveals adaptive immune repertories underlying pathogenesis and recovery in severe versus mild COVID-19 patients,providing valuable information for potential vaccine and therapeutic development against SARS-CoV-2 infection.Fan Zhang Rui Gan Ziqi Zhen Xiaoli Hu Xiang Li Fengxia Zhou Ying Liu Chuangeng Chen Shuangyu Xie Bailing Zhang Xiaoke Wu Zhiwei Huang 2020Signal Transduction and Targeted Therapy2020,5,1:3
7Influence of annealing and spheroidizing treatment on microstructure and mechanical properties of AZ91 magnesium alloy显示文摘The low-strength and high-brittleness of AZ91 cast magnesium alloy mainly result from the coarse divorced eutectic phase.To solve these problems,the annealing treatment of AZ91 cast magnesium alloy was carried out at 415 ℃ and held for 24 h in this study and the alloy was then slowly cooled to room temperature in furnace.The microstructures of the alloy were observed using a metallographic microscope,a transmission electron microscopy and an emission scanning electron microscopy,respectively.The phase analysis was performed using the X-ray diffraction,and the tensile test of the specimen at ambient temperature was performed on a material test machine.The results indicate that the coarse divorced eutectic phase dissolves into the Mg matrix during the isothermal process,and the lamellar β-Mg17Al12 phase precipitates from the magnesium solid solution with a type of pearlite precipitation during furnace cooling.Consequently,the spheroidizing treatment was carried out at 320 ℃ for 20 h following the annealing process and the lamellar β-Mg17Al12 phase was spheroidized.Compared with the as-cast alloy,the strength and ductility of the AZ91 magnesium alloy are increased obviously after annealing treatment;the yield strength and tensile strength are increased to 137.8 MPa and 240.4 MPa from 102.9 MPa and 199.3 MPa,respectively;and the elongation is improved to 6.12% from 4.35%.After being spheroidized,the strength and hardness decrease a little,but the ductility is elevated to 7.23%.The nucleation,growth and spheroidizing mechanism of the lamellar β-Mg17Al12 phase were also discussed.Zhang Jumei Wang Zhihu Jiang Bailing Chen Zishan 2013China Foundry2013,10,1:3
8Loss of mdig expression enhances DNA and histone methylation and metastasis of aggressive breast cancer显示文摘We previously reported that expression of an environmentally induced gene,mineral dust-induced gene(mdig),predicts overall survival in breast cancer patients.In the present report,we further demonstrate the differential roles of mdig between earlier-and later-stage breast cancers.In noncancerous breast,mdig is a proliferation factor for cell growth and cell motility.In breast cancer,however,higher levels of mdig negatively regulate the migration and invasion of cancer cells.Assessment of global DNA methylation,chromatin accessibility and H3K9me3 heterochromatin signature suggests that silencing mdig enhances DNA and histone methylation.Through immunostaining and data mining,we found that mdig is significantly upregulated in noninvasive and/or earlier-stage breast cancers.In contrast,in triple-negative and other invasive breast cancers,diminished mdig expression was noted,indicating that the loss of mdig expression could be an important feature of aggressive breast cancers.Taken together,our data suggest that mdig is a new biomarker that likely promotes tumor growth in the early stages of breast cancer while acting as a tumor suppressor to inhibit invasion and metastasis in later-stage tumors.Chitra Thakur Bailing Chen Lingzhi Li Qian Zhang Zeng-Quan Yang Fei Chen 2018Signal Transduction and Targeted Therapy2018,3,1:2
9Invisibility cloaks from forward design to inverse design显示文摘In this paper,we review the invisibility cloak design methodologies and their experimental developments from a practical perspective,as well as basic underlying theories,derived materials,and experimental implementations.Particular stress is laid on the recent transition from forward design to inverse design where some signifcant limitations of previous cloaking solution in practice can be solved.We anticipate that future invisibility cloaking devices will be based on integration of both forward and inverse designs.XU Su WANG Yong ZHANG BaiLe CHEN HongSheng 2013Science China(Information Sciences)2013,56,12:2
10Tunable excitonic emission of monolayer WS2 for the optical detection of DNA nucleobases显示文摘Shun Feng Chunxiao Cong Namphung Peimyoo Yu Chen Jingzhi Shang Chenji Zou Bingchen Cao Lishu Wu Jing Zhang Mustafa Eginligil Xingzhi Wang Qihua Xiong Arundithi Ananthanarayanan Peng Chen Baile Zhang Ting Yu 2018Nano Research2018,11,3:1
11High-operating-temperature MWIR photodetector based on a InAs/GaSb superlattice grown by MOCVD显示文摘We demonstrate a high-operating-temperature(HOT)mid-wavelength InAs/GaSb superlattice heterojunction in-frared photodetector grown by metal-organic chemical vapor deposition.High crystalline quality and the near-zero lattice mis-match of a InAs/GaSb superlattice on an InAs substrate were evidenced by high-resolution X-ray diffraction.At a bias voltage of-0.1 V and an operating temperature of 200 K,the device exhibited a 50%cutoff wavelength of~4.9μm,a dark current dens-ity of 0.012 A/cm^(2),and a peak specific detectivity of 2.3×10^(9) cm·Hz^(1/2)/W.Xiujun Hao Yan Teng He Zhu Jiafeng Liu Hong Zhu Yunlong Huai Meng Li Baile Chen Yong Huang Hui Yang 2022Journal of Semiconductors2022,43,1:1
12Efficient file search in non-DHT P2P networks显示文摘Shiping Chen Zhan Zhang Shigang Chen Baile Shi 2007Computer Communications2007,,2:1
13Development of a pulsar‐based time‐scale显示文摘G. Hobbs W. Coles R. N. Manchester M. J. Keith R. M. Shannon D. Chen M. Bailes N. D. R. Bhat S. Burke‐Spolaor D. Champion A. Chaudhary A. Hotan J. Khoo J. Kocz Y. Levin S. Oslowski B. Preisig V. Ravi J. E. Reynolds J. Sarkissian W. van Straten J. P. W. Ve 2012Monthly Notices of the Royal Astronomical Society2012,,4:1
14Electromagnetic wave interactions with a metama- terial cloak 显示文摘CHEN Hongsheng WU Bea-lan ZHANG Baile 2007Physical Review Letters2007,99,06:1
15Microstructure and Properties of Graphene Oxide-doped TiO_2 Coating on Titanium by Micro Arc Oxidation显示文摘Micro arc oxidation(MAO) coatings doped with graphene oxide(GO) were prepared on pure titanium by adding GO and sodium dodecyl benzene sulfonate(SDBS) into a sodium silicate solution. The as-deposited coatings were comparatively analyzed by scanning electron microscopy(SEM), energydispersive X-ray spectroscopy(EDS) and X-ray diffraction(XRD). The binding forces of the MAO, MAO+GO and MAO+GO+SDBS three coatings were measured by a scratch tester. The mechanical property of the three coatings was analyzed using the nano-indentation technique. The corrosion resistance of the coatings was tested by the electrochemical system in 3.5% NaCl solution. The photocatalytic activity of the prepared samples was evaluated by determining the degradation of methylene blue(MB) solution. The results showed that compared to the MAO coating, the morphologies and phase compositions of MAO+GO and MAO+GO+SDBS composite coatings were significantly different. These two composite coatings all had superior photocatalytic activity. Especially, the MAO+GO composite coating still had enhanced binding force and excellent corrosion resistance. Furthermore, the relationship between the microstructure and the properties of these three MAO coatings was analyzed.高羽 杨巍 XU Dapeng CHEN Jian JIANG Bailing 2018Journal of Wuhan University of Technology(Materials Science)2018,33,6:1
16An approach to kinetic energy diagnosis of meso-synoptie scale interactions显示文摘CHEN S J BAIL S KUNG E C 1990Mon Wea Rev1990,118,:1
17Response of A Cylindrical Invisibility Cloak to Electromagnetic Waves显示文摘Zhang Baile Chen Hongsheng Wu BaeIan 2007Phys Rev B2007,76,12:1
18Hydrogen sulfide inhibits beta-amyloid peptide-induced apoptosis in PC12 cells and the underlying mechanisms显示文摘BACKGROUND:Studies have demonstrated that hydrogen sulfide(H2S) levels are 55% lower in brains of Alzheimer's disease(AD) patients than in age-matched normal individuals,which suggests that H2S might be involved in some aspects of AD pathogenesis.OBJECTIVE:To observe the protective mechanisms of varied concentrations of H2S against β-amyloid-peptide(Aβ) induced apoptosis in pheochromoytoma(PC12) cells,and to analyze the pathway of action.DESIGN,TIME AND SETTING:A controlled,observational,in vitro experiment was performed at Neurophysiology Laboratory in Zhongshan Medical School,Sun Yat-sen University between July 2006 and May 2007.MATERIALS:PC12 cells were provided by the Animal Experimental Center of Medical School of Sun Yat-sen University.Glybenclamide,rhodamine123,and dihydrorhodamine123 were purchased from Sigma(USA).METHODS:PC12 cells were incubated at 37 ℃ in a 5% CO2-enriched incubator with RPMI-1640 medium,supplemented with 5% horse-serum and 10% fetal bovine serum.Cells in logarithmic growth curves received different treatment:The PC12 cells were maintains at 37 ℃ with the original medium,then incubated in Aβ25-35,sodium hydrosulfide(NaHS),glybenclamide,NaHS+ Aβ25-35,or pretreated with glybenclamide 30 minutes prior to administration of and Aβ25-35,respectively.MAIN OUTCOME MEASURES:(1) The survival rate of PC12 cells was detected by MTT assay and Hoechst staining.(2) The apoptosis rate of PC12 cells was detected utilizing flow cytometry with propidium iodide staining,and morphological changes of apoptotic cells were observed.(3) The mitochondrial membrane potential was detected by Rhodamine123-combined flow cytometry.(4) The intracellular reactive oxygen species content was detected by dihydrorhodamine123-combined flow cytometry.RESULTS:Aβ25-35 induced significantly decreased viability and increased percentage of apoptosis in PC12 cells,as well as dissipated mitochondrial membrane potential expression and an overproduction of reactive oxygen species.When PC12 cells were co-treated with NaHS and Aβ25-35,the decreased cell viability induced by 20 μmol/L Aβ25-35 was concentration-dependently blocked by NaHS(50,100,and 200 μmol/L).NaHS(100 μmol/L) obviously reduced the percentage of apoptotic PC12 cells induced by 20 μmol/L Aβ25-35.In addition,100 μmol/L NaHS inhibited mitochondrial membrane potential dissipation and reactive oxygen species overproduction.When the ATP-sensitive K channel(KATP) inhibitor,glybenclamide,was administered 30 minutes prior to NaHS and Aβ25-35 treatment,the NaHS-dependent cellular protection was partly blocked.This resulted in reduced PC12 cell viability and increased the percentage of apoptosis,as well as significantly blocked mitochondrial membrane potential preservation and inhibited reactive oxygen species overproduction due to NaHS treatment.CONCLUSION:NaHS protected PC12 cells against Aβ25-35-induced damage.NaHS-dependent cellular protection was associated with mitochondrial membrane potential preservation and inhibition of reactive oxygen species overproduction.The KATP channel inhibitor,glybenclamide,significantly blocked the cellular protective effects of NaHS,indicating that KATP channel activation plays an important role in NaHS-induced protection of PC12 cells to Aβ25-35-induced damage.Xiuqin Chen Jingtian Li Jinhui Zou Bailing Li Meng Wang 2008Neural Regeneration Research2008,3,9:1
19Extraordinary Surface Voltage Effect in the Invisibility Cloak with An Active Device Inside显示文摘Zhang Baile Chen Hongsheng Wu BaeIan 2008Phys Rev Lett2008,100,06:1
20Comparison of unipedicular and bipedicular kyphoplastyon the stiffness and biomechanical halance of ctmlpressiomfractured vertebrae显示文摘BaiLing Chen YiQiang l i DengHui Xie 2011Eur Spine2011,20,:1
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