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106篇 您的检索式:作者名="Yibo Chen"
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1Field experiment on a robust hierarchical metropolitan quantum cryptography network显示文摘A hierarchical metropolitan quantum cryptography network upon the inner-city commercial telecom fiber cables is reported in this paper. The seven-user network contains a four-node backbone net with one node acting as the subnet gateway, a two-user subnet and a single-fiber access link, which is realized by the Faraday-Michelson interferometer set-ups. The techniques of the quantum router, optical switch and trusted relay are assembled here to guarantee the feasibility and expandability of the quantum cryptography network. Five nodes of the network are located in the government departments and the secure keys generated by the quantum key distribution network are utilized to encrypt the instant video, sound, text messages and confidential files transmitting between these bureaus. The whole implementation including the hierarchical quantum cryptographic communication network links and the corresponding application software shows a big step toward the practical user-oriented network with a high security level.XU FangXing CHEN Wei WANG Shuang YIN ZhenQiang ZHANG Yang LIU Yun ZHOU Zheng ZHAO YiBo LI HongWei LIU Dong HAN ZhengFu GUO GuangCan 2009Chinese Science Bulletin2009,54,17:40
2Spatial 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
3Trends in cancer mortality in China from 2004 to 2018:A nationwide longitudinal study显示文摘Background:The long-term trend in cancer death in a rapidly developing country provides information for cancer prophylaxis.Here,we aimed to identify the trends in cancer mortality in China during the 2004-2018 period.Methods:Using raw data from the national mortality surveillance system of China,we assessed the mortalities of all cancer and site-specific cancers during the 2004-2018 period.The participants were divided into three age groups:≥65 years,40-64 years,and≤39 years.Changing trends in cancer death by gender,residency,and tumor location were estimated using fitting joinpoint models to log-transformed crude mortality rates(CMRs)and age-standardizedmortality rates(ASMRs).Results:Cancer death accounted for 24% of all-cause of death in China during 2014-2018.The CMR of all cancer was 150.0 per 100,000 persons.Cancer was the leading cause of death in the population<65 years.The six major cancer types(lung/bronchus cancer,liver cancer,stomach cancer,esophagus cancer,colorectal cancer,and pancreas cancer)accounted for 75.85% of all cancer deaths.The CMR of all cancer increased while the ASMR decreased during 2014-2018(P<0.001).Lung/bronchus cancer and liver cancer were the leading causes of cancer death in the population<65 years,accounting for 45.31%(CMR)and 44.35%(ASMR)of all cancer death,respectively.The ASMR of liver cancer was higher in the 40-64 years population than in the≥65 years population,in contrast to the other five major cancers.The ASMRs of liver cancer,stomach cancer,and esophagus cancer decreased although they were higher in rural residents than in urban residents;the ASMRs of lung/bronchus cancer,colorectal cancer,and pancreas cancer increased in rural residents although they were higher in urban residents than in rural residents during 2014-2018.Conclusion:Although the ASMR of all cancer decreased in China during 2004-2018,lung/bronchus cancer and liver cancer remained the leading causes of cancer-related premature death.Lung/bronchus cancer,colorectal cancer,and pancreas cancer increased in rural residents.Dongming Jiang Lijuan Zhang Wenbin Liu Yibo Ding Jianhua Yin Rongbing Ren Qi Li Yifan Chen Jiaying Shen Xiaojie Tan Hongwei Zhang Guangwen Cao 2021Cancer Communications2021,41,10:23
4Immunohistochemical prognostic markers of esophageal squamous cell carcinoma:a systematic review显示文摘Background: Esophageal squamous cell carcinoma(ESCC) is an aggressive malignancy, with a high incidence and poor prognosis. In the past several decades, hundreds of proteins have been reported to be associated with the prognosis of ESCC, but none has been widely accepted to guide clinical care. This study aimed to identify proteins with great potential for predicting prognosis of ESCC.Methods: We conducted a systematic review on immunohistochemical(IHC) prognostic markers of ESCC according to the 2009 Preferred Reporting Items for Systematic Reviews and Meta-Analyses(PRISMA) Guidelines. Literature related to IHC prognostic markers of ESCC were searched from PubMed, Embase, Web of Science, and Cochrane Library until January 30 th, 2017. The risk of bias of these original studies was evaluated using the Quality in Prognosis Studies(QUIPS) tool.Results: We identified 11 emerging IHC markers with reproducible results, including eight markers [epidermal growth factor receptor(EGFR), Cyclin D1, vascular endothelial growth factor(VEGF), Survivin, Podoplanin, Fascin,phosphorylated mammalian target of rapamycin(p-mTOR), and pyruvate kinase M2(PKM2)] indicating unfavorable prognosis and 3 markers(P27, P16, and E-cadherin) indicating favorable prognosis of ESCC.Conclusion: Strong evidence supports that these 11 emerging IHC markers or their combinations may be useful in predicting prognosis and aiding personalized therapy decision-making for ESCC patients.Chunni Wang Jingnan Wang Zhaoli Chen Yibo Gao Jie He 2017Chinese Journal of Cancer2017,36,11:16
5The global significance of biodiversity science in China: an overview显示文摘Biodiversity science in China has seen rapid growth over recent decades,ranging from baseline biodiversity studies to understanding the processes behind evolution across dynamic regions such as the Qinghai-Tibetan Plateau.We review research,including species catalogues;biodiversity monitoring;the origins,distributions,maintenance and threats to biodiversity;biodiversity-related ecosystem function and services;and species and ecosystems'responses to global change.Next,we identify priority topics and offer suggestions and priorities for future biodiversity research in China.These priorities include(i)the ecology and biogeography of the Qinghai-Tibetan Plateau and surrounding mountains,and that of subtropical and tropical forests across China;(ii)marine and inland aquatic biodiversity;and(iii)effective conservation and management to identify and maintain synergies between biodiversity and socio-economic development to fulfil China's vision for becoming an ecological civilization.In addition,we propose three future strategies:(i)translate advanced biodiversity science into practice for biodiversity conservation;(ii)strengthen capacity building and application of advanced technologies,including high-throughput sequencing,genomics and remote sensing;and(iii)strengthen and expand international collaborations.Based on the recent rapid progress of biodiversity research,China is well positioned to become a global leader in biodiversity research in the near future.Xiangcheng Mi Gang Feng Yibo Hu Jian Zhang Lei Chen Richard T.Corlett Alice C.Hughes Stuart Pimm Bernhard Schmid Suhua Shi Jens-Christian Svenning Keping Ma 2021National Science Review2021,8,7:16
6Genome-wide Association Analyses Reveal the Genetic Basis of Stigma Exsertion in Rice显示文摘耻辱 exsertion,交配系统的米饭的一个关键决定因素,极大地在米饭贡献杂种优势的申请。尽管与耻辱 exsertion 联系的一些量的特点 loci 是印射或克隆的罚款,内在的基因建筑学仍然保持不清楚。我们用在 Oryza sativa 的 533 多样的就职描绘的 650 万 SNP 在耻辱 exsertion 和相关花的特点上执行了染色体宽的协会研究。我们识别了显著地与耻辱 exsertion 和相关特点,其三与三主要谷物尺寸基因 GS3, GW5,和 GW2 co 局部性被联系的 23 genomic loci。进一步的分析显示这三基因由控制小穗状花小穗和耻辱的尺寸和形状影响了耻辱 exsertion。GS3 和 GW5 的联合大部分定义耻辱 exsertion 和相关特点的层次。这二基因的选择在 O 的 subpopulations 之中导致了花的特点的特定的分布。sativa。低耻辱 exsertion 联合 gw5GS3 在栽培米饭变化的一半存在;因此,介绍 GW5gs3 联合进男无菌的线具有为改进混合米饭的种子生产的高潜力。Hao Zhou Pingbo Li WeiboXie Saddam Hussain Yibo Li Duo Xia Hu Zhao Shengyuan Sun Junxiao Chen Hong Ye Jun Hou Da Zhao Guanjun Gao Qinglu Zhang Gongwei Wang Xingming Lian Jinghua Xiao Sibin Yu Xianghua Li Yuqing He 2017Molecular Plant2017,10,4:15
7Stretching and imaging studies of single DNA molecules显示文摘DNA molecules were stretched on silanized mica surface with the molecular combing technique, and detected with fluorescence microscopy and atomic force microscopy. Meantime, DNA molecules were stretched with a modified dynamic molecular combing technique and studied with atomic force microscopy. The results indicate that, compared with the dynamic molecular combing technique, the modified dynamic molecular combing technique has advantages of less-sample demand and less contamination to sample; as compared with the molecular combing technique, it has better aligning effect and reproducibility. Combination of this kind of DNA molecular manipulating technique with the single DNA molecule detecting technique by atomic force microscopy and fluorescence microscopy will play an important role in the basic research of molecular dynamics and the application of gene research.ZHANG Yi CHEN Shengfu OUYANG Zhenqian HU Jun XIONG Qihua LI Bin HUANG Yibo LI Minqian JIN Chengzhi 2000Chinese Science Bulletin2000,45,15:13
8Review of control and guidance technology on hypersonic vehicle显示文摘Air-breathing hypersonic vehicle has great military and potential economic value due to its characteristics:high velocity,long range,quick response.Therefore,the development of hypersonic vehicle and its guidance and control technology are reviewed in this paper.Firstly,the development and classification of hypersonic vehicles around the world are summarized,and the geometric configuration and mission profile of typical air-breathing hypersonic vehicle are given.Secondly,the control difficulties of air-breathing hypersonic vehicle are introduced,including integrated design of engine and fuselage,static instability,strong nonlinearity,uncertain aerodynamic parameters,etc.According to its control requirements,the control methods considering external disturbance,fault-tolerant control methods,anti-saturation methods,and prescribed performance control methods considering transient performance constraints are summarized respectively.The classification and comparison of various control methods are given,and the frontiers of theoretical development are analyzed.Finally,considering the effects of composite disturbances,the design of terminal guidance law under multiple constraints is overviewed,including guidance law with angle constraint,velocity constraint,acceleration constraint and time constraint.Similarly,the classification of guidance law design methods under different constraints,their advantages as well as the future development trend and requirements are introduced.Yibo DING Xiaokui YUE Guangshan CHEN Jiashun SI 2022Chinese Journal of Aeronautics2022,35,7:9
9Defects in Graphene:Generation,Healing,and Their Effects on the Properties of Graphene:A Review显示文摘Graphene has attracted immense investigation since its discovery.Lattice imperfections are introduced into graphene unavoidably during graphene growth or processing.These structural defects are known to significantly affect electronic and chemical properties of graphene.A comprehensive understanding of graphene defect is thus of critical importance.Here we review the major progresses made in defectrelated engineering of graphene.Firstly,we give a brief introduction on the types of defects in graphene.Secondly,the generation and healing of the graphene defects are summarized.Then,the effects of defects on the chemical,electronic,magnetic,and mechanical properties of graphene are discussed.Finally,we address the associated challenges and prospects on the future study of defects in graphene and other nanocarbon materials.Lili Liu Miaoqing Qing Yibo Wang Shimou Chen 2015Journal of Materials Science & Technology2015,31,6:9
10TOPOLOGY OPTIMIZATION OF TRUSS STRUCTURES WITH SYSTEMATIC RELIABILITY CONSTRAINTS UNDER MULTIPLE LOADING CASES显示文摘In this paper,a mathematical model for topology optimization of truss structures withconstraints of displacement and system reliability under multiple loading cases is constructed.In orderto avoid the difficulty of computing the structure’s system reliability,a solving approach is presented inwhich the failure probability of system is divided into the sum of all bars’ failure probability by meansof reliability distribution.In addition,by drawing into the reliability safety factor and the fundamen-tal relationship in structural mechanics,all probability constraints of displacement and stress are equiv-alently displayed as conventional form and linear function of the design variables.The optimizationproblem with multiple constraints is treated by the compact constraint tactics and is solved by the im-proved simplex method.The examples show that the approach proposed in this paper is feasible and ef-ficient.Chen Jianjun Cao Yibo Sun Huaian 1999Acta Mechanica Solida Sinica1999,12,2:8
11The RppC-AvrRppC NLR-effector interaction mediates the resistance to southern corn rust in maize显示文摘Southern corn rust(SCR),caused by the fungal pathogen Puccinia polysora,is a major threat to maize pro-duction worldwide.Efficient breeding and deployment of resistant hybrids are key to achieving durable control of SCR.Here,we report the molecular cloning and characterization of RppC,which encodes an NLR-type immune receptor and is responsible for a major SCR resistance quantitative trait locus.Further-more,we identified the corresponding avirulence effector,AvrRppC,which is secreted by P.polysora and triggers RppC-mediated resistance.Allelic variation of AvrRppC directly determines the effectiveness of RppC-mediated resistance,indicating that monitoring of AvrRppC variants in the field can guide the rational deployment of RppC-containing hybrids in maize production.Currently,RppC is the most frequently deployed SCR resistance gene in China,and a better understanding of its mode of action is crit-ical for extending its durability.Ce Deng April Leonard James Cahill Meng Lv Yurong Li Shawn Thatcher Xueying Li Xiaodi Zhao Wenjie Du Zheng Li Huimin Li Victor Llaca Kevin Fengler Lisa Marshall Charlotte Harris Girma Tabor Zhimin Li Zhiqiang Tian Qinghua Yang Yanhui Chen Jihua Tang Xintao Wang Junjie Hao Jianbing Yan Zhibing Lai Xiaohong Fei Weibin Song Jinsheng Lai Xuecai Zhang Guoping Shu Yibo Wang Yuxiao Chang Weiling Zhu Wei Xiong Juan Sun Bailin Li Junqiang Ding 2022Molecular Plant2022,15,5:6
12In vitro testicular organogenesis from human fetal gonads produces fertilization-competent spermatids显示文摘Unlike most organs that mature during the fetal period,the male reproductive system reaches maturity only at puberty with the commencement of spermatogenesis.Robust modelling of human testicular organogenesis in vitro would facilitate research into mechanisms of and factors affecting human spermatogenic failure and male fertility preservation in prepubertal tumor patients.Here,we report successful recapitulation of human testicular organogenesis in vitro from fetal gonadal ridge.Our model displayed the formation of mature seminiferous epithelium and self-renewing spermatogonia.Remarkably,in vitro-derived haploid spermatids have undergone meiotic recombination,and showed increased genetic diversity as indicated by genetic analysis.Moreover,these spermatids were able to fertilize oocytes and support subsequent blastocyst formation.The in vitro testicular organogenesis system described here will play an important role in elucidating the regulation of human testis development and maintaining male fertility in prepubertal cancer patients.Yan Yuan Laihua Li Qing Cheng Feiyang Diao Qiao Zeng Xiaoyu Yang Yibo Wu Hao Zhang Mingqian Huang Junqing Chen Quan Zhou Yunfei Zhu Rong Hua Jianyu Tian Xin Wang Zuomin Zhou Jie Hao Jinjin Yu Dong Hua Jiayin Liu Xuejiang Guo Qi Zhou Jiahao Sha 2020Cell Research2020,30,3:6
13Follistatin-like protein 1 plays a tumor suppressor role in clear-cell renal cell carcinoma显示文摘Background:We previously showed that the expression of follistatin-like protein 1(FSTL1)was significantly down-regulated in metastatic clear-cell renal cell carcinoma(ccRCC).In this study,we aimed to characterize the role of FSTL1 in the development of ccRCC.Methods:The effects of FSTL1 on cell activity and cell cycle were investigated in ccRCC cell lines with altered FSTL1 expression.Gene expression microarray assays were performed to identify the major signaling pathways affected by FSTL1 knockdown.The expression of FSTL1 in ccRCC and its effect on postoperative prognosis were estimated in a cohort with 89 patients.Results:FSTL1 knockdown promoted anchorage-independent growth,migration,invasion,and cell cycle of ccRCC cell lines,whereas FSTL1 overexpression attenuated cell migration.FSTL1 knockdown up-regulated nuclear factor-κB(NF-κB)and hypoxia-inducible factor(HIF)signaling pathways,increased epithelial-to-mesenchymal transition,up-regulated interleukin-6 expression,and promoted tumor necrosis factor-α-induced degradation of NF-κB inhibitor(IκBα)in ccRCC cell lines.FSTL1 immunostaining was selectively positive in epithelial cytoplasm in the loop of Henle,and positive rate of FSTL1 was significantly lower in ccRCC tissues than in adjacent renal tissues(P<0.001).The mul-tivariate Cox regression analysis showed that the intratumoral FSTL1 expression conferred a favorable independent prognosis with a hazard ratio of 0.325(95%confidence interval 0.118-0.894).HIF-2αexpression was negatively cor-related with FSTL1 expression in ccRCC specimens(r=−0.229,P=0.044).Intratumoral expression of HIF-2α,rather than HIF-1α,significantly predicted an unfavorable prognosis in ccRCC(log-rank,P=0.038).Conclusions:FSTL1 plays a tumor suppression role possibly via repressing the NF-κB and HIF-2αsignaling pathways.To increase FSTL1 expression might be a candidate therapeutic strategy for metastatic ccRCC.Yan Liu Xiaojie Tan Wenbin Liu Xi Chen Xiaomei Hou Dan Shen Yibo Ding Jianhua Yin Ling Wang Hongwei Zhang Yongwei Yu Jianguo Hou Timothy C.Thompson Guangwen Cao 2018Cancer Communications2018,38,1:5
14Biomaterials for stem cell engineering and biomanufacturing显示文摘Recent years have witnessed the expansion of tissue failures and diseases.The uprising of regenerative medicine converges the sight onto stem cell-biomaterial based therapy.Tissue engineering and regenerative medicine proposes the strategy of constructing spatially,mechanically,chemically and biologically designed biomaterials for stem cells to grow and differentiate.Therefore,this paper summarized the basic properties of embryonic stem cells(ESCs),induced pluripotent stem cells(iPSCs)and adult stem cells.The properties of frequently used biomaterials were also described in terms of natural and synthetic origins.Particularly,the combination of stem cells and biomaterials for tissue repair applications was reviewed in terms of nervous,cardiovascular,pancreatic,hematopoietic and musculoskeletal system.Finally,stem-cell-related biomanufacturing was envisioned and the novel biofabrication technologies were discussed,enlightening a promising route for the future advancement of large-scale stem cell-biomaterial based therapeutic manufacturing.Yibo Xu Chuanxin Chen Peter B.Hellwarth Xiaoping Bao 2019Bioactive Materials2019,4,1:5
15Catalytic oxidation of CO on mesoporous codoped ceria catalysts:Insights into correlation of physicochemical property and catalytic activity显示文摘Codoping approach is an appealing strategy to further improve the catalytic activity of Ce-based catalysts.In the present study,Mn and/or Cu doped ceria solid solutions MnxCuyCe1-x-yO2,CuxCe1-xO2,MnxCe1-xO2 and pure CeO2 were prepared by CTAB-assisted hydrothermal method for CO oxidation.XRD,SEM,EDS,BET,Raman,H2-TPR,XPS and in situ DRIFTS techniques were carried out to study the physicochemical properties and to correlate them to the activity.The doped samples maintain the cubic fluorite structure of CeO2 with high crystallinity and small crystallite size,forming Ce-based solid solutions.The obtained catalysts have large mesoporous structure with average pore size of 10-14 nm.The doped transition metal enhances the oxygen vacancies and improves reducibility of the solids.The synergistic interaction of Mn and Cu codoping induces mo re oxygen vacancies,pro moting the increase of surface adsorbed oxygen and the transfer of bulk oxygen of catalyst,thereby enhancing the catalytic activity for CO oxidation.Besides,the decomposition rate of the carbonate species which is derived from in situ DRIFTS for each catalyst can provide a measure to evaluate its catalytic activity of CO oxidation.Hongjian Zhu Yingying Chen Yibo Gao Wenxu Liu Zhongpeng Wang Chenchen Cui Wei Liu Liguo Wang 2019Journal of Rare Earths2019,37,9:5
16Cascaded electron transition in CuWO4/CdS/CDs heterostructure accelerating charge separation towards enhanced photocatalytic activity显示文摘CuWO4,as an n-type oxide semiconductor with a bandgap of 2.2 eV,has stimulated enormous interest as a potential broad-spectrum-active photocatalyst for environmental pollution remediations.However,rapid charge recombination greatly hinders its practical applications.Herein,we present a cascaded electron transition pathway in a ternary heterostructure consisting of CdS quantum dots,carbon dots(CDs)and CuWO4 hollow spheres,which proves to greatly facilitate the photogenerated electron-hole separation,and eventually boosts the degradation efficiency of phenol and congo red by 100%and 46%compared to bare CuWO4.The enhanced performance of the CuWO4/CdS/CDs heterostructure mainly originates from the unidirectional electron migration from CdS to CuWO4 and then to the organics through CDs.This work elucidates the electron transfer kinetics in multi-phase system and provides a new design paradigm for optimizing the properties of CuWO4 based photocatalysts.Yibo Chen Jing-Feng Li Pei-Yu Liao Ying-Shan Zeng Zhu Wang Zhao-Qing Liu 2020Chinese Chemical Letters2020,31,6:4
17Air pollution and inhalation exposure to particulate matter of different sizes in rural households using improved stoves in central China显示文摘Household air pollution is considered to be among the top environmental risks in China.To examine the performance of improved stoves for reduction of indoor particulate matter(PM) emission and exposure in rural households, individual inhalation exposure to size-resolved PM was investigated using personal portable samplers carried by residents using wood gasifier stoves or improved coal stoves in a rural county in Central China.Concentrations of PM with different sizes in stationary indoor and outdoor air were also monitored at paired sites. The stationary concentrations of size-resolved PM in indoor air were greater than those in outdoor air, especially finer particles PM0.25. The daily averaged exposure concentrations of PM0.25, PM1.0, PM2.5 and total suspended particle for all the surveyed residents were 74.4 ± 41.1, 159.3 ± 74.3, 176.7 ± 78.1 and 217.9 ± 78.1 μg/m3,respectively. Even using the improved stoves, the individual exposure to indoor PM far exceeded the air quality guideline by WHO at 25 μg/m3. Submicron particles PM1.0 were the dominant PM fraction for personal exposure and indoor and outdoor air. Personal exposure exhibited a closer correlation with indoor PM concentrations than that for outdoor concentrations. Both inhalation exposure and indoor air PM concentrations in the rural households with gasifier firewood stoves were evidently lower than the reported results using traditional firewood stoves. However, local governments in the studied rural areas should exercise caution when widely and hastily promoting gasifier firewood stoves in place of improved coal stoves, due to the higher PM levels in indoor and outdoor air and personal inhaled exposure.Weijian Liu Guofeng Shen Yuanchen Chen Huizhong Shen Ye Huang Tongchao Li Yilong Wang Xiaofang Fu Shu Tao Wenxin Liu Yibo Huang-Fu Weihao Zhang Chunyu Xue Guangqing Liu Fuyong Wu Minghung Wong 2018Journal of Environmental Sciences2018,30,1:4
18Aluminum impregnated silica catalyst for Friedel–Crafts reaction:Influence of ordering mesostructure显示文摘Friedel–Crafts alkylation of benzene with linear chain ole fin(C_(10)–C_(14)),which is an important reaction of synthetic detergent,was studied via different catalysts of aluminum impregnated silica molecular sieves.AlCl_3 was immobilized on silica molecular sieves with different channel structures,hexagonal packing channels network(SBA-15,MCM-41),and disordered channel network(SiO_2,SiO_2-Gel) by impregnation.XRD and N_2 adsorption–desorption isotherms con firmed that the speci fic mesoporous structures were maintained for order channel network catalyst after impregnation.Catalytic activities were investigated under different conditions.The in fluences of channel structure were discussed.The results showed that catalyst based on mesoporous like SBA-15 had the highest catalytic activities and 2-LAB selectivity compared with other catalysts in this work.The highest 2-LAB selectivity was nearly 50% when 1-dodecene conversion was nearly 100%.At low 1-dodecene conversion or higher benzene/1-dodecene molar ratio,2-LAB selectivity was nearly 60%.Yibo He Qinghua Zhang Xiaoli Zhan Dangguo Cheng Fengqiu Chen 2017Chinese Journal of Chemical Engineering2017,25,10:3
19Flotillin-2 is an acrosome-related protein involved in mouse spermiogenesis显示文摘Spermatogenesis is a complex process of terminal differentiation by which mature sperms are generated,and it can be divided into three phases:mitosis,meiosis and spermiogenesis.In a previous study,we established a series of proteomic profiles for spermatogenesis to understand the regulation of male fertility and infertility.Here,we further investigated the localization and the role of flotillin-2 in spermiogenesis.Flotillin-2 expression was investigated in the testis of male CD1 mice at various developmental stages of spermatogenesis by using Western blotting,immunohistochemistry and immunofluorescence.Flotillin-2 was knocked down in vivo in three-week-old male mice using intratesticular injection of small inhibitory RNA(siRNA),and sperm abnormalities were assessed three weeks later.Flotillin-2 was expressed at high levels in male germ cells during spermatogenesis.Flotillin-2 immunoreactivity was observed in pachytene spermatocytes as a strong dot-shaped signal and in round spermatids as a sickle-shaped distribution ahead of the acrosome.Immunofluorescence confirmed flotillin-2 was localized in front of the acrosome in round spermatids,indicating that flotillin-2 was localized to the Golgi apparatus.Knockdown of flotillin-2 in vivo led to a significant increase in head sperm abnormalities isolated from the cauda epididymis,compared with control siRNA-injected testes.This study indicates that flotillin-2 is a novel Golgi-related protein involved in sperm acrosome biogenesis.Yibo Wu Xin Chen Shuai Wang Min Jiang Bo Zheng Quan Zhou Ye Bi Zuomin Zhou Xiaoyan Huang Jiahao Sha 2012The Journal of Biomedical Research2012,26,4:3
20MHGCN:Multiview Highway Graph Convolutional Network for Cross-Lingual Entity Alignment显示文摘Knowledge graphs(KGs)provide a wealth of prior knowledge for the research on social networks.Crosslingual entity alignment aims at integrating complementary KGs from different languages and thus benefits various knowledge-driven social network studies.Recent entity alignment methods often take an embedding-based approach to model the entity and relation embedding of KGs.However,these studies mostly focus on the information of the entity itself and its structural features but ignore the influence of multiple types of data in KGs.In this paper,we propose a new embedding-based framework named multiview highway graph convolutional network(MHGCN),which considers the entity alignment from the views of entity semantic,relation semantic,and entity attribute.To learn the structural features of an entity,the MHGCN employs a highway graph convolutional network(GCN)for entity embedding in each view.In addition,the MHGCN weights and fuses the multiple views according to the importance of the embedding from each view to obtain a better entity embedding.The alignment entities are identified based on the similarity of entity embeddings.The experimental results show that the MHGCN consistently outperforms the state-of-the-art alignment methods.The research also will benefit knowledge fusion through cross-lingual KG entity alignment.Jianliang Gao Xiangyue Liu Yibo Chen Fan Xiong 2022Tsinghua Science and Technology2022,27,4:3
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