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| 1 | Autonomous Driving in the iCity-HD Maps as a Key Challenge of the Automotive Industry显示文摘 | Heiko G. Seif Xiaolong Hu | 2016 | Engineering2016，2，2： | 18 |
| 2 | Influence of the post-treatment of HZSM-5 zeolite on catalytic performance for alkylation of benzene with methanol显示文摘The porous material HZSM-5 zeolite with micro-mesopore hierarchical porosity was prepared by post-treatment(combined alkali treatment and acid leaching) of parent zeolite and its catalytic performance for benzene alkylation with methanol was investigated. The effect of post-treatment on the textural properties was characterized by various techniques(including ICP-AES, XRD, nitrogen sorption isotherms, SEM, NH3-TPD, Py-IR and TG). The results indicated that the post-treatment could modify the structural and acidic properties of HZSM-5 zeolite. In this procedure, not only additional mesopores were created by selective extraction of silicon but also the acidity was tuned. Consequently, the modified HZSM-5 zeolite showed larger external surface area with less acid sites as compared to the parent zeolite. It was found out that the modified zeolite exhibited a higher benzene conversion and xylene selectivity for alkylation of benzene with methanol as well as excellent life span of the catalyst than conventional ones. This can be explained by the facts that the presence of additional mesopores improved the diffusion property in the reactions. Furthermore, the modified zeolite showed an appropriate Br?nsted acidity for effective suppression of the side reaction of methanol to olefins, thus reduced the accumulation of coke on the HZSM-5 zeolite, which was favorable for the catalyst stability. In comparison with the parent HZSM-5 zeolite,the modified zeolite by alkali treatment and acid leaching showed better performance for the benzene alkylation with methanol. | Qingtao Wang Wenwen Han Hualei Hu Jinghui Lyu Xiaolong Xu Qunfeng Zhang Hongjing Wang Xiaonian Li | 2017 | Chinese Journal of Chemical Engineering2017，25，12： | 13 |
| 3 | The Coix Genome Provides Insights into Panicoideae Evolution and Papery Hull Domestication显示文摘Coix is a grass crop domesticated as early as the Neolithic era.It is still widely cultivated for both highly nutritional food and medicinal use.However,the genetic study and breeding of this crop are hindered by the lack of a sequenced genome.Here,we report de novo sequencing and assembly of the 1619-Mb genome of Coix,and annotation of 75.39%repeats and 39629 protein-coding genes.Comparative genomics analysis showed that Coix is more closely related to sorghum than maize,but intriguingly only Coix and maize had a recent genome duplication event,which was not detected in sorghum.We further constructed a genetic map and mapped several important traits,especially the strength of hull.Selection of papery hull(thin:easy dehulling)from the stony hull(thick:difficult dehulling)in wild progenitors was a key step in Coix domestication.The papery hull makes seed easier to process and germinate.Anatomic and global transcriptome analysis revealed that the papery hull is a result of inhibition of cell division and wall biogenesis.We also successfully demonstrated that seed hull pressure resistance is controlled by two major quantitative trait loci(QTLs),which are associated with hull thickness and color,respectively.The two QTLs were further fine mapped within intervals of 250 kb and 146 kb,respectively.These resources provide a platform for evolutionary studies and will facilitate molecular breeding of this important crop. | Chao Guo Yanan Wang Aiguo Yang Jun He Chaowen Xiao Shanhua Lv Fengming Han Yibing Yuan Yuan Yuan Xiaolong Dong Juan Guo YawenYang-Hailan Liu Ningzhi Zuo Yaxi Hu Kangxu Zhao Zhengbo Jiang Xing Wang Tingting Jiang Yaou Sherf Moju Cao Yuan Wang Zhaobo Long Tingzhao Rong Luqi Huang Shufeng Zhou | 2020 | Molecular Plant2020，13，2： | 11 |
| 4 | NLRP3-dependent pyroptosis is required for HIV-1 gp120- induced neuropathology显示文摘The human immunodeficiency virus-1(HIV-1)envelope protein gp120 is the major contributor to the pathogenesis of HIVassociated neurocognitive disorder(HAND).Neuroinflammation plays a pivotal role in gp120-induced neuropathology,but how gp120 triggers neuroinflammatory processes and subsequent neuronal death remains unknown.Here,we provide evidence that NLRP3 is required for gp120-induced neuroinflammation and neuropathy.Our results showed that gp120-induced NLRP3-dependent pyroptosis and IL-1βproduction in microglia.Inhibition of microglial NLRP3 inflammasome activation alleviated gp120-mediated neuroinflammatory factor release and neuronal injury.Importantly,we showed that chronic administration of MCC950,a novel selective NLRP3 inhibitor,to gp120 transgenic mice not only attenuated neuroinflammation and neuronal death but also promoted neuronal regeneration and restored the impaired neurocognitive function.In conclusion,our data revealed that the NLRP3 inflammasome is important for gp120-induced neuroinflammation and neuropathology and suggest that NLRP3 is a potential novel target for the treatment of HAND. | Xiaolong He Weijun Yang Zhijie Zeng Yi Wei Jie Gao Bao Zhang Li Li Liqun Liu Yu Wan Qing Zeng Zelong Gong Liting Liu Hanyun Zhang Yubin Li Shaojie Yang Tongtong Hu Lixian Wu Eliezer Masliah Shenghe Huang Hong Cao | 2020 | Cellular & Molecular Immunology2020，17，3： | 11 |
| 5 | Comparison of survival outcomes between transthoracic and transabdominal surgical approaches in patients with Siewert-Ⅱ/Ⅲesophagogastric junction adenocarcinoma:a single-institution retrospective cohort study显示文摘Objective: To compare the survival outcomes of transabdominal(TA) and transthoracic(TT) surgical approaches in patients with Siewert-Ⅱ/Ⅲ esophagogastric junction adenocarcinoma.Methods: This retrospective study was conducted in patients with Siewert-Ⅱ/Ⅲ esophagogastric junction adenocarcinoma who underwent either TT or TA operations in the West China Hospital between January 2006 and December 2009.Results: A total of 308 patients(109 in the TT and 199 in the TA groups) were included in this study with a follow-up rate of 87.3%. The median(P25, P75) number of harvested perigastric lymph nodes was 8(5, 10) in the TT group and 23(16, 34) in the TA group(P<0.001), and the number of positive perigastric lymph nodes was 2(0, 5) in the TT group and 3(1, 8) in the TA group(P<0.004). The 5-year overall survival(OS) rate was 36% in the TT group and 51% in the TA group(P=0.005). Subgroup analysis by Siewert classification showed that 5-year OS rates for patients with Siewert Ⅱ tumors were 38% and 48% in TT and TA groups, respectively(P=0.134), whereas the 5-year OS rate for patients with Siewert Ⅲ tumors was significantly lower in the TT group than that in the TA group(33% vs. 53%; P=0.010). Multivariate analysis indicated that N2 and N3 stages, R1/R2 resection and a TT surgical approach were prognostic factors for poor OS.Conclusions: Improved perigastric lymph node dissection may be the main reason for better survival outcomes observed with a TA gastrectomy approach than with TT gastrectomy for Siewert Ⅲ tumor patients. | Weihan Zhang Xinzu Chen Kai Liu Kun Yang Xiaolong Chen Ying Zhao Yongfan Zhao Jiaping Chen Longqi Chen Jiankun Hu | 2016 | Chinese Journal of Cancer Research2016，28，4： | 10 |
| 6 | Existence of Microsatellites in Expressed Sequence Tags of Common Carp (Cyprinus carpio L.) Available in GenBank dbEST Database显示文摘表示顺序标注的普通鲤鱼(EST ) 为存在 ofmicrosatellites,或简单顺序重复(SSR ) 被分析。在 NCBI dbEST 数据库, 10612sequences 的一个总数在 2004 年 12 月 31 日前被登记。2-6 nucleotidemicrosatellites 的完全的搜索导致了 513 包含 SSR EST 的鉴定,为 4.8% 总数的财务。聚合分析显示包含 SSR EST 的 73 个序列掉进 27 个组并且留下 440 EST 是独立的。467 唯一的包含 SSR EST 的一个总数被识别。这些 EST-SSRs 包含了许多简单顺序类型,并且 di-nucleotiderepeats 和 tri-nucleotiderepeats 是最丰富的,为 42.1% 全部和 27.9% 的财务分别地。thedinucleotide 重复, CA/TG 是最丰富的,由 GA/TC 列在后面。BLASTx 搜索证明 SSR loci 的 that38.1% 能与基因或蛋白质被联系知道或包含 SSR EST 的未知 function.BLASTx 搜索也在 zebrafishsequences 上显示出点击的高频率(98/179 ) 。 | HU Jingjie WANG Xiaolong HU Xiaoli BAO Zhenmin | 2006 | Journal of Ocean University of China2006，5，1： | 8 |
| 7 | Recent progresses in the suppression method based on the growth mechanism of lithium dendrite显示文摘Lithium secondary batteries(LSBs) with high energy densities need to be further developed for future applications in portable electronic devices, electric vehicles, hybrid electric vehicles and smart grids. Lithium metal is the most promising electrode for next-generation rechargeable batteries. However, the formation of lithium dendrite on the anode surface leads to serious safety concerns and low coulombic efficiency.Recently, researchers have made great efforts and significant progresses to solve these problems. Here we review the growth mechanism and suppression method of lithium dendrite for LSBs' anode protection. We also establish the relationship between the growth mechanism and suppression method. The research direction for building better LSBs is given by comparing the advantages and disadvantages of these methods based on the growth mechanism. | Xiaolong Xu Suijun Wang Hao Wang Chen Hu Yi Jin Jingbing Liu Hui Yan | 2018 | Journal of Energy Chemistry2018，27，2： | 8 |
| 8 | Climate Sensitivity and Feedbacks of BCC-CSM to Idealized CO2 Forcing from CMIP5 to CMIP6显示文摘Climate sensitivity represents the response of climate system to doubled CO2 concentration relative to the preindustrial level, which is one of the sources of uncertainty in climate projections. It is unclear how the climate sensitivity and feedbacks will change as a model system is upgraded from the Coupled Model Intercomparison Project Phase 5(CMIP5) to CMIP6. In this paper, we address this issue by comparing two versions of the Beijing Climate Center Climate System Model(BCC-CSM) participating in CMIP6 and CMIP5, i.e., BCC-CSM2-MR and BCC-CSM1.1 m,which have the same horizontal resolution but different physical parameterizations. The results show that the equilibrium climate sensitivity(ECS) of BCC-CSM slightly increases from CMIP5(2.94 K) to CMIP6(3.04 K). The small changes in the ECS result from compensation between decreased effective radiative forcing(ERF) and the increased net feedback. In contrast, the transient climate response(TCR) evidently decreases from 2.19 to 1.40 K, nearly the lower bound of the CMIP6 multimodel spread. The low TCR in BCC-CSM2-MR is mainly caused by the small ERF overly even though the ocean heat uptake(OHU) efficiency is substantially improved from that in BCC-CSM1.1 m.Cloud shortwave feedback(λSWCL) is found to be the major cause of the increased net feedback in BCC-CSM2-MR,mainly over the Southern Ocean. The strong positive λSWCL in BCC-CSM2-MR is coincidently related to the weakened sea ice-albedo feedback in the same region. This result is caused by reduced sea ice coverage simulated during the preindustrial cold season, which leads to reduced melting per 1-K global warming. As a result, in BCCCSM2-MR, reduced surface heat flux and strengthened static stability of the planetary boundary layer cause a decrease in low-level clouds and an increase in incident shortwave radiation. This study reveals the important compensation between λSWCL and sea ice-albedo feedback in the Southern Ocean. | Xueli SHI Xiaolong CHEN Yunwei DAI Guoquan HU | 2020 | Journal of Meteorological Research2020，34，4： | 8 |
| 9 | Allele-defined genome reveals biallelic differentiation during cassava evolution显示文摘Dear Editor,Generation of heterozygous genomes by hybridization between or within species can help maintain plant diversity and serve as a potential source of new species(Baek et al.,2018).Moreover,genomic heterozygosity is associated with genomic coadaptation,developmental stability,and heterosis.Accurate definition of alleles in haplotypes is necessary to precisely characterize allelic variation controlling agriculturally important traits(Shi et al.,2019).Currently,most released genomes have mosaic assembly of haplotypes due to random selection or collapse of alleles during genome assembly(Shi et al.,2019),which masked allelic variation and functional differentiation of divergent alleles in heterozygous species. | Wei Hu Changmian Ji Haitao shi Zhe Liang Zehong Ding Jianqiu Ye Wenjun Ou Gang Zhou Weiwei Tie Yan Yan Jinghao Yang Xiaoying Yang Yunxie Wei Zhiqiang Jin Jianghui Xie Ming Peng Wenquan Wang Anping Guo Biyu Xu Jianchun Guo Songbi Chen Liming Ma Mingcheng Wang Yang Zhou Xiaolong Li Ruoxi Li Siyi Guo Xinhui Xiao Zhongqing Wan Feifei An Jie Zhang Qingyun Leng Yin Li Ray Ming Kaimian Li | 2021 | Molecular Plant2021，14，6： | 8 |
| 10 | miR-145 improves metabolic inflammatory disease through multiple pathways显示文摘Chronic inflammation plays a pivotal role in insulin resistance and type 2 diabetes,yet the mechanisms are not completely understood.Here,we demonstrated that serum LPS levels were significantly higher in newly diagnosed diabetic patients than in normal control.miR-145 level in peripheral blood mononuclear cells decreased in type 2 diabetics.LPS repressed the transcription of miR-143/145 cluster and decreased miR-145 levels.Attenuation of miR-145 activity by anti-miR-145 triggered liver inflammation and increased serum chemokines in C57BL/6 J mice.Conversely,lentivirus-mediated miR-145 overexpression inhibited macrophage infiltration,reduced body weight,and improved glucose metabolism in db/db mice.And miR-145 overexpression markedly reduced plaque size in the aorta in ApoE−/−mice.Both OPG and KLF5 were targets of miR-145.miR-145 repressed cell proliferation and induced apoptosis partially by targeting OPG and KLF5.miR-145 also suppressed NF-κB activation by targeting OPG and KLF5.Our findings provide an association of the environment with the progress of metabolic disorders.Increasing miR-145 may be a new potential therapeutic strategy in preventing and treating metabolic diseases such as type 2 diabetes and atherosclerosis. | Min He Nan Wu Man Cheong Leong Weiwei Zhang Zi Ye Rumei Li Jinyang Huang Zhaoyun Zhang Lianxi Li Xiao Yao Wenbai Zhou Naijia Liu Zhihong Yang Xuehong Dong Yintao Li Lili Chen Qin Li Xuanchun Wang Jie Wen Xiaolong Zhao Bin Lu Yehong Yang Qinghua Wang Renming Hu | 2020 | Journal of Molecular Cell Biology2020，12，2： | 7 |
| 11 | Photocatalytic properties of hierarchical BiOXs obtained via an ethanol-assisted solvothermal process显示文摘In this study, bismuth oxyhalide(Bi OXs(X_Cl, Br, I)) semiconductors were prepared by a simple solvothermal method, with ethanol serving as solvent and a series of tetrabutylammonium halide surfactants as halogen sources. Under identical synthetic conditions, Bi OBr was more readily constructed into regular flower-like hierarchical architectures. The photocatalytic properties of the materials were studied by monitoring the degradation of rhodamine B(Rh B),with visible light absorption, and colorless salicylic acid(SA). It was found that both Rh B and SA were rapidly degraded on the surface of Bi OBr. Bi OCl was rather active for the degradation of Rh B,but ineffective toward the degradation of SA. However, neither Rh B nor SA could be degraded effectively in the case of Bi OI. Further experiments such as UV–visible spectroscopy and detection of U OH and O2 Uradicals suggest that the electronic structure of the Bi OX photocatalysts is responsible for the difference in their activities. | Manke Jia Xiaolong Hu Shulian Wang Yingping Huang Lirong Song | 2015 | Journal of Environmental Sciences2015，27，9： | 5 |
| 12 | A Robust Authentication Scheme for Filtering of Injected False Data in Dynamic Wireless Sensor Networks显示文摘 | HU Yupeng LIN Yaping YU Jianping ZENG Weini YI Yeqing LI Xiaolong | 2007 | Chinese Journal of Electronics2007，16，3： | 4 |
| 13 | Balancing flexural strength and porosity in DLP-3D printing Al_(2)O_(3)cores for hollow turbine blades显示文摘High porosity and high strength are usually mutually exclusive in the preparation of ceramic materials.However,high porosity and flexural strength are required for the preparation of complex ceramic cores for hollow turbine blades.In this study,Al_(2)O_(3)cores with high porosity and high flexural strength were successfully prepared using digital light processing(DLP)3 D printing technology.The influence of sintering temperature on the microstructure,pore evolution,and flexural strength of the cores were investigated.With an increase in the sintering temperature,the porosity of the ceramic cores first increased and then decreased,reaching a maximum value of 35%at 1400℃.The flexural strength increased with the increase in sintering temperature,but at 1400℃the incremental enhancement of flexural strength was greatest.Combined with the core service requirements and core performance,this study selected 1400℃(open porosity of 35.1%and flexural strength of 20.3 MPa)as the optimal sintering temperature for the DLP-3 D printed Al_(2)O_(3)core. | Qiaolei Li Xiaolong An Jingjing Liang Yongsheng Liu Kehui Hu Zhigang Lu Xinyan Yue Jinguo Li Yizhou Zhou Xiaofeng Sun | 2022 | Journal of Materials Science & Technology2022，，9： | 4 |
| 14 | Pharmacological Activation of RXR-a Promotes Hematoma Absorption via a PPAR-y-dependent Pathway After Intracerebral Hemorrhage显示文摘Endogenously eliminating the hematoma is a favorable strategy in addressing intracerebral hemorrhage(ICH).This study sought to determine the role of retinoid X receptor-ot(RXR-a)in the context of hematoma absorption after ICH.Our results showed that pharmacologically activating RXR-a with bexarotene significantly accelerated hematoma clearance and alleviated neurological dysfunction after ICH.RXR-ot was expressed in microglia/macro-phages,neurons,and astrocytes.Mechanistically,bexarotene promoted the nuclear translocation of RXR-a and PPAR-y,as well as reducing neuroinflammation by modulating microglia/macrophage reprograming from the Ml into the M2 phenotype.Furthermore,all the beneficial effects of RXR-a in ICH were reversed by the PPAR-y inhibitor GW9662.In conclusion,the pharmacological activation of RXR-a confers robust neuroprotection against ICH by accelerating hematoma clearance and repolarizing microglia/macrophages towards the M2 phenotype through PPAR-y-related mechanisms.Our data support the notion that RXR-ot might be a promising therapeutic target for ICH. | Chaoran Xu Huaijun Chen Shengjun Zhou Chenjun Sun Xiaolong Xia Yucong Peng Jianfeng Zhuang Xiongjie Fu Hanhai Zeng Hang Zhou Yang Cao Qian Yu Yin Li Libin Hu Guoyang Zhou Feng Yan Gao Chen Jianru Li | 2021 | Neuroscience Bulletin2021，37，10： | 4 |
| 15 | Effect of methotrexate combined with Sanhuang Yilong decoction on serum and synovial fluid aquaporin levels in rheumatoid arthritis dampness-heat blockage syndrome显示文摘OBJECTIVE:To study the effect of methotrexate(MTX) combined with Sanhuang Yilong decoction(SYD) on aquaporin(AQP) expression,and to explore the role of AQPs in the pathogenesis of rheumatoid arthritis(RA).METHODS:A total of 118 dampness-heat blockage type RA patients who were hospitalized in the General Chengdu Military Hospital between January2014 and December 2016 were selected as subjects in this study(30 patient of these patients with knee joint effusion were assigned to the RA synovial fluid group).For the pre-treatment controlgroups,30 healthy volunteers were recruited as the healthy control group and 30 osteoarthritis(OA) patients with knee joint effusion were included as OA synovial fluid control group.The RA dampnessheat blockage syndrome treatment groups were divided into 45 cases in the combined group and 45 cases in the MTX group.The combined group received MTX combined with SYD treatment while the MTX group received MTX alone.AQP1,AQP2 and AQP3 expressions were detected in the serum and synovial fluid.RESULTS:AQP1 had the highest expression,followed by AQP3,and AQP2.The serum levels of AQP1,AQP2 and AQP3 were all significantly lower than those in the healthy volunteers(P < 0.05),while the synovial fluid AQP1,AQP2 and AQP3 expression in the RA group were comparable to these in the OA groups(P > 0.05).After treatment for2 weeks,serum AQP1,AQP2,AQP3 were significantly increased and erythrocyte sedimentation rate,C-reactive protein,disease activity score of 28 joints were decreased in the combined group(P < 0.05).CONCLUSION:Abnormal expression of AQPs inhibits water metabolism in RA dampness-heat blockage syndrome,so liquid is accumulated at the joint,which may play an important role in the pathogenesis of RA.MTX combined with SYD for the treatment of RA can effectively increase AQP expression. | Liu Defang Yan Jiao Guo Mingyang Luo Yong Yang Mei Yang Min Zou Longfu Li Wan Zhong Xiaolong Liu Tao Hu Yonghe | 2018 | Journal of Traditional Chinese Medicine2018，38，4： | 4 |
| 16 | Surveying brain tumor heterogeneity by single-cell RNA-sequencing of multi-sector biopsies显示文摘Brain tumors are among the most challenging human tumors for which the mechanisms driving progression and heterogeneity remain poorly understood.We combined single-cell RNA-seq with multi-sector biopsies to sample and analyze single-cell expression profiles of gliomas from 13 Chinese patients.After classifying individual cells;we generated a spatial and temporal landscape of glioma that revealed the patterns of invasion between the different sub-regions of gliomas.We also used single-cell inferred copy number variations and pseudotime trajectories to inform on the crucial branches that dominate tumor progression.The dynamic cell components of the multi-region biopsy analysis allowed us to spatially deconvolute with unprecedented accuracy the transcriptomic features of the core and those of the periphery of glioma at single-cell level.Through this rich and geographically detailed dataset,we were also able to characterize and construct the chemokine and chemokine receptor interactions that exist among different tumor and non-tumor cells.This study provides the first spatial-level analysis of the cellular states that characterize human gliomas.It also presents an initial molecular map of the cross-talks between glioma cells and the surrounding microenvironment with single-cell resolution. | Kai Yu Yuqiong Hu Fan Wu Qiufang Guo Zenghui Qian Waner Hu Jing Chen Kuanyu Wang Xiaoying Fan Xinglong Wu John EJ Rasko Xiaolong Fan Antonio lavarone Tao Jiang Fuchou Tang Xiao-Dong Su | 2020 | National Science Review2020，7，8： | 4 |
| 17 | Promotion of Mn Doped Co/CNTs Catalysts for CO Hydrogenation to Light Olefins显示文摘与各种各样的内容, Mn 被介绍进支持的碳 nanotubes ( CNT )钴催化剂和获得的 Mn-Co/CNTs 催化剂被调查让公司加氢点亮链烯并且由 N2 吸附描绘了,X光检查衍射( XRD ),X光检查光电子系列( XPS ), H2 温度规划了减小( TPR ),公司温度规划了解吸附作用( TPD )和传播电子显微镜( TEM )。结果显示到支持 CNTs 的公司催化剂的 Mn (0.3 wt%) 的小数量的增加显著地增加了 C2C4 石蜡的选择并且减少 CH4 的选择。与到钴催化剂的 Mn 的进一步的增加,然而, CH4 选择与 C5+ 选择的增加一起显然减少了。与 unpromoted 催化剂相比,支持 Mn 的钴催化剂增加了 C2C4/C20C40 臼齿的比率。 | Liping Tang Chengli Song Xiaolong Yang Mengli Li Bin Hu | 2013 | Chinese Journal of Chemistry2013，31，6： | 4 |
| 18 | Aboveground biomass and its spatial distribution pattern of herbaceous marsh vegetation in China显示文摘Herbaceous marsh is the most widely distributed type of marsh wetland ecosystem,and has important ecological functions such as water conservation,climate regulation,carbon storage and fixation,and sheltering rare species.The carbon sequestration function of herbaceous marsh plays a key role in slowing climate warming and maintaining regional environmental stability.Vegetation biomass is an important index reflecting the carbon sequestration capacity of wetlands.Investigating the biomass of marsh vegetation can provide a scientific basis for estimating the carbon storage and carbon sequestration capacity of marshes.Based on field survey data of aboveground biomass of herbaceous marsh vegetation and the distribution data set of marsh in China,we analyzed the aboveground biomass and its spatial distribution pattern of herbaceous marsh on a national scale for the first time.The results showed that in China the total area of herbaceous marsh was 9.7×10^(4) km^(2),the average density of aboveground biomass of herbaceous marsh vegetation was 227.5±23.0 g C m-2(95%confidence interval,the same below),and the total aboveground biomass was 22.2±2.2 Tg C(1 Tg=1012 g).The aboveground biomass density of herbaceous marsh vegetation is generally low in Northeast China and the Tibetan Plateau,and high in central North China and coastal regions in China.In different marsh distribution regions of China,the average biomass density of herbaceous marsh vegetation from small to large was as follows:temperate humid and semi-humid marsh region(182.3±49.3 g C m^(-2)) | Xiangjin SHEN Ming JIANG Xianguo LU Xingtu LIU Bo LIU Jiaqi ZHANG Xianwei WANG Shouzheng TONG Guangchun LEI Shengzhong WANG Chuan TONG Hangqing FAN Kun TIAN Xiaolong WANG Yuanman HU Yonghong XIE Muyuan MA Shuwen ZHANG Chunxiang CAO Zhichen WANG | 2021 | Science China Earth Sciences2021，64，7： | 4 |
| 19 | Principle and Experimental Verification of Novel Dual Driving Face Rotary Ultrasonic Motor显示文摘Existing rotary ultrasonic motors operating in extreme environments cannot meet the requirements of good environmental adaptability and compact structure at same time,and existing ultrasonic motors with Langevin transducers show better environmental adaptability,but size of these motors are usually big due to the radial arrangement of the Langevin transducers.A novel dual driving face rotary ultrasonic motor is proposed,and its working principle is experimentally verified.The working principle of the novel ultrasonic motor is firstly proposed.The 5th in-plane flexural vibration travelling wave,excited by the Langevin transducers around the stator ring,is used to drive the rotors.Then the finite element method is used in the determination of dimensions of the prototype motor,and the confirmation of its working principle.After that,a laser Doppler vibrometer system is used for measuring the resonance frequency and vibration amplitude of the stator.At last,output characteristics of the prototype motor are measured,environmental adaptability is tested and performance for driving a metal ball is also investigated.At room temperature and 200 V(zero to peak) driving voltage,the motor's no-load speed is 80 r/min,the stalling torque is 0.35 N·m and the maximum output power is 0.85 W.The response time of this motor is 0.96 ms at the room temperature,and it decreases or increases little in cold environment.A metal ball driven by the motor can rotate at 210 r/min with the driving voltage 300 V(zero to peak).Results indicate that the prototype motor has a large output torque and good environmental adaptability.A rotary ultrasonic motor owning compact structure and good environmental adaptability is proposed,and lays the foundations of ultrasonic motors' applications in extreme environments. | LU Xiaolong HU Junhui YANG Lin ZHAO Chunsheng | 2013 | Chinese Journal of Mechanical Engineering2013，26，5： | 4 |
| 20 | Influence of external electric field on piezotronic effect in ZnO nanowires显示文摘In this work, the piezotronic effect is investigated for the first time in external electric fields ranging from 0 V·cm-I to 2,000 V·cm-1 by using n-type ZnO nanowires supported by a flexible substrate. In the presence of an external electric field, the Schottky barrier height (SBH) is lowered by the image force, allowing more free carriers to pass through the metal-semiconductor junction and enhancing the screening effect on positive piezoelectric polarization charges. As the strength of the external electric field increases, the piezotronic effect is significantly suppressed and the metal-semiconductor contact finally exhibits Ohmic behavior. The experimental results show that devices can be classified into three groups, corresponding to low, moderate, and high carrier densities of the nanowires used. This work not only helps us to explicate the basic physical mechanism of the piezotronic effect in a harsh environment in an electric field but also provides guidelines for future design and fabrication of piezotronic devices. | Fei Xue Limin Zhang Xiaolong Feng Guofeng Hu Feng Ru Fan Xiaonan Wen Li Zheng Zhong Lin Wang | 2015 | Nano Research2015，8，7： | 4 |
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