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318篇 您的检索式:作者名="Jian TONG"
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1A rapid advice guideline for the diagnosis and treatment of 2019 novel coronavirus(2019-nCoV) infected pneumonia(standard version)显示文摘In December 2019, a new type viral pneumonia cases occurred in Wuhan, Hubei Province;and then named '2019 novel coronavirus(2019-nCoV)' by the World Health Organization(WHO) on 12 January 2020. For it is a never been experienced respiratory disease before and with infection ability widely and quickly, it attracted the world’s attention but without treatment and control manual. For the request from frontline clinicians and public health professionals of 2019-nCoV infected pneumonia management, an evidence-based guideline urgently needs to be developed. Therefore, we drafted this guideline according to the rapid advice guidelines methodology and general rules of WHO guideline development;we also added the first-hand management data of Zhongnan Hospital of Wuhan University. This guideline includes the guideline methodology, epidemiological characteristics, disease screening and population prevention, diagnosis, treatment and control(including traditional Chinese Medicine), nosocomial infection prevention and control, and disease nursing of the 2019-nCoV. Moreover, we also provide a whole process of a successful treatment case of the severe 2019-nCoV infected pneumonia and experience and lessons of hospital rescue for 2019-nCoV infections. This rapid advice guideline is suitable for the first frontline doctors and nurses, managers of hospitals and healthcare sections, community residents, public health persons, relevant researchers, and all person who are interested in the 2019-nCoV.Ying-Hui Jin Lin Cai Zhen-Shun Cheng Hong Cheng Tong Deng Yi-Pin Fan Cheng Fang Di Huang Lu-Qi Huang Qiao Huang Yong Han Bo Hu Fen Hu Bing-Hui Li Yi-Rong Li Ke Liang Li-Kai Lin Li-Sha Luo Jing Ma Lin-Lu Ma Zhi-Yong Peng Yun-Bao Pan Zhen-Yu Pan Xue-Qun Ren Hui-Min Sun Ying Wang Yun-Yun Wang Hong Weng Chao-Jie Wei Dong-Fang Wu Jian Xia Yong Xiong Hai-Bo Xu Xiao-Mei Yao Yu-Feng Yuan Tai-Sheng Ye Xiao-Chun Zhang Ying-Wen Zhang Yin-Gao Zhang Hua-Min Zhang Yan Zhao Ming-Juan Zhao Hao Zi Xian-Tao Zeng Yong-Yan Wang Xing-Huan Wang 2020Military Medical Research2020,7,1:161
2A complete sequence and comparative analysis of a SARS-associated virus(Isolate BJ01)显示文摘The genome sequence of the Severe Acute Respiratory Syndrome (SARS)-associated virus provides essential information for the identification of pathogen(s), exploration of etiology and evolution, interpretation of transmission and pathogenesis, development of diagnostics, prevention by future vaccination, and treatment by developing new drugs. We report the complete genome sequence and comparative analysis of an isolate (BJ01) of the coronavirus that has been recognized as a pathogen for SARS. The genome is 29725 nt in size and has 11 ORFs (Open Reading Frames). It is composed of a stable region encoding an RNA-dependent RNA polymerase (composed of 2 ORFs) and a variable region representing 4 CDSs (coding sequences) for viral structural genes (the S, E, M, N proteins) and 5 PUPs (putative uncharacterized proteins). Its gene order is identical to that of other known coronaviruses. The sequence alignment with all known RNA viruses places this virus as a member in the family of Coronaviridae. Thirty putative substitutions have been identified by comparative analysis of the 5 SARS- associated virus genome sequences in GenBank. Fifteen of them lead to possible amino acid changes (non-synonymous mutations) in the proteins. Three amino acid changes, with predicted alteration of physical and chemical features, have been detected in the S protein that is postulated to beinvolved in the immunoreactions between the virus and its host. Two amino acid changes have been detected in the Mprotein, which could be related to viral envelope formation. Phylogenetic analysis suggests the possibility of non-human origin of the SARS-associated viruses but provides noevidence that they are man-made. Further efforts should focus on identifying the etiology of the SARS-associated virus and ruling out conclusively the existence of otherpossible SARS-related pathogen(s).QIN E'de ZHU Qingyu YU Man FAN Baochang CHANG Guohui SI Bingyin YANG Bao PENG Wenming JIANG Tao LIU Bohua DENG Yongqiang LIU Hong ZHANG Yu WANG Cui LI Yuquan GAN Yonghua LI Xiaoyu L Fushuang TAN Gang CAO Wuchun, YANG Ruifu Institute of Microbiology and Epidemiology, Chinese Academy of Military Medical Sciences, Beijing 100071, China WANG Jian, LI Wei, XU Zuyuan, LI Yan, WU Qingfa, LIN Wei, CHEN Weijun, TANG Lin, DENG Yajun, HAN Yujun, LI Changfeng, LEI Meng, LI Guoqing, LI Wenjie, L Hong, SHI Jianping, TONG Zongzhong, ZHANG Feng, LI Songgang, LIU Bin, LIU Siqi, DONG Wei, WANG Jun, Gane K-S Wong, YU Jun & YANG Huanming* Beijing Genomics Institute, Chinese Academy of Sciences, Beijing 101300 National Center for Genome Information, Beijing 101300, China 2003Chinese Science Bulletin2003,48,10:121
3The Reference Genome of Tea Plant and Resequencing of 81 Diverse Accessions Provide Insights into Its Genome Evolution and Adaptation显示文摘Tea plant is an important economic crop,which is used to produce the world's oldest and most widely consumed tea beverages.Here,we present a high-quality reference genome assembly of the tea plant(Camellia sinensis var.sinensis)consisting of 15 pseudo-chromosomes.LTR retrotransposons(LTR-RTs)account for 70.38%of the genome,and we present evidence that LTR-RTS play critical roles in genome size expansion and the transcriptional diversification of tea plant genes through preferential insertion in promoter regions and introns.Genes,particularly those coding for terpene biosynthesis pro-teins,associated with tea aroma and stress resistance were significantly amplified through recent tandem duplications and exist as gene clusters in tea plant genome.Phylogenetic analysis of the sequences of 81 tea plant accessions with diverse origins revealed three well-differentiated tea plant populations,support-ing the proposition for the southwest origin of the Chinese cultivated tea plant and its later spread to western Asia through introduction.Domestication and modern breeding left significant signatures on hundreds of genes in the tea plant genome,particularly those associated with tea quality and stress resis-tance.The genomic sequences of the reported reference and resequenced tea plant accessions provide valuable resources for future functional genomics study and molecular breeding of improved cul-tivars of tea plants.Enhua Xia Wei Tong Yan Hou Yanlin An Linbo Chen Qiong Wu Yunlong Liu Jie Yu Fangdong Li Ruopei Li Penghui Li Huijuan Zhao Ruoheng Ge Jin Huang Ali Inayat Mallano Yanrui Zhang Shengrui Liu Weiwei Deng Chuankui Song Zhaoliang Zhang Jian Zhao Shu Wei Zhengzhu Zhang Tao Xia Chaoling Wei Xiaochun Wan 2020Molecular Plant2020,13,7:51
4Enhanced secondary pollution offset reduction of primary emissions during COVID-19 lockdown in China显示文摘To control the spread of the 2019 novel coronavirus(COVID-19),China imposed nationwide restrictions on the movement of its population(lockdown)after the Chinese New Year of 2020,leading to large reductions in economic activities and associated emissions.Despite such large decreases in primary pollution,there were nonetheless several periods of heavy haze pollution in eastern China,raising questions about the well-established relationship between human activities and air quality.Here,using comprehensive measurements and modeling,we show that the haze during the COVID lockdown was driven by enhancements of secondary pollution.In particular,large decreases in NOx emissions from transportation increased ozone and nighttime NO_(3)radical formation,and these increases in atmospheric oxidizing capacity in turn facilitated the formation of secondary particulate matter.Our results,afforded by the tragic natural experiment of the COVID-19 pandemic,indicate that haze mitigation depends upon a coordinated and balanced strategy for controlling multiple pollutants.Xin Huang Aijun Ding Jian Gao Bo Zheng Derong Zhou Ximeng Qi Rong Tang Jiaping Wang Chuanhua Ren Wei Nie Xuguang Chi Zheng Xu Liangduo Chen Yuanyuan Li Fei Che Nini Pang Haikun Wang Dan Tong Wei Qin Wei Cheng Weijing Liu Qingyan Fu Baoxian Liu Fahe Chai Steven JDavis Qiang Zhang Kebin He 2021National Science Review2021,8,2:47
5Dihydroartemisinin is an inhibitor of ovarian cancer cell growth显示文摘瞄准:调查 dihydroartemisinin (DHA ) 的反癌症活动,在人的卵巢的癌症房间的一块面板的反疟疾药 artemisinin 的衍生物排队。方法: 房间生长被 MTT 生存能力试金决定。Apoptosis 和房间周期前进被 DNA 破碎胶化电气泳动,流动 cytometry 试金,和 TUNEL 试金评估;蛋白质和 mRNA 表示被西方的弄污和 RT-PCR 试金分析。结果:Artemisininand 它的衍生物包括 artesunate, arteether, artemether, arteannuin,和 DHA,在人的卵巢的癌症细胞的 exhibitanticancer 生长活动。在他们之中, DHA 在禁止房间生长是最有效的。卵巢的癌症房间线是更敏感的(5-10-fold ) 到与正常相比的 DHA 治疗,卵巢的房间排队。在微臼齿的剂量层次的 DHA 展出剂量 -- 在卵巢的癌症房间的 andtime 依赖的 cytotoxicity 排队。而且, DHA 导致了 apoptosis 和 G2cell 周期拘捕,由 Bcl-xL 和 Bcl-2 和 Bax 和 Bad.Conclusion 的增加的减少伴随了:有希望的结果第一次证明 DHA 禁止人的卵巢的癌症房间的生长。房间生长, apoptosis 正式就职,和 G2 拘捕在卵巢的癌症的临床的治疗作为可能的反癌症药为 DHA 的进一步的研究在 vitro 证据提供的卵巢的癌症的选择抑制。Yang JIAO Chun-min GE Qing-hui MENG Jian-ping CAO Jian TONG Sai-jun FAN 2007Acta Pharmacologica Sinica2007,28,7:39
6Relationship between hs-CRP, proMMP-1, TIMP-1 and coronary plaque morphology: intravascular ultrasound study显示文摘Background Rupture of unstable plaque with subsequent thrombus formation is the common pathophy- siological substrate of the acute coronary syndrome (ACS). It is of potential significance to explore the blood indexes predicting plaque characteristics. Little studies have focused on this field. Therefore we investigated the relationship between hypersensitive C-reactive protein (hs-CRP), pro-matrix metalloproteinase-1 (proMMP-1), tissue inhibitors of matrix metalloproteinase-1 (TIMP-1) and coronary plaque morphology. Methods Intravascular ultrasound (IVUS) examination was done in 152 patients with confirmed coronary heart disease before percutaneous coronary intervention from February 2003 to July 2005. Plasma samples of arterial blood were collected prior to the procedure. The level of hs-CRP, proMMP-1 and TIMP-1 were respectively measured by enzyme-linked immunosorbent assay (ELISA). Results Unstable and ruptured plaque were found more frequently in patients with acute myocardial infarction and unstable angina. External elastic membrane cross-sectional area (EEM CSA), plaque area, lipid pool area and plaque burden were significantly larger in ruptured and unstable plaque group. Positive remolding, thinner fabric-cap, smaller minimal lumen cross-sectional area (MLA), dissection and thrombus were significantly more frequent in ruptured and unstable plaque group. The levels of plasma hs-CRP, proMMP-1 and TIMP-1 were higher in ruptured plaque group. hs-CRP>8.94 mg/L was used to predict ruptured plaque with a ROC curve area of 0.76 [95% confidence interval (CI), 67.0%-85.8%], sensitivity of 71.8%, specificity of 77.0% and accuracy of 69.2% (P<0.01), similarly for proMMP-1>0.12 ng/ml with a ROC curve area of 0.69 [95% CI, 58.2%-80.2%], sensitivity of 69.2%, specificity of 75.2% and accuracy of 66.2% (P<0.01), and TIMP-1>83.45 ng/ml with a ROC curve area of 0.67 [95% CI, 56.2%-78.3%], sensitivity of 66.7%, specificity of 61.9% and accuracy of 66.2% (P<0.01). Conclusion The plaque characteristics correlate with the clinical presentation. The elevation of hs-CRP, proMMP-1 and TIMP-1 are related to the plaque instability and rupture.ZHANG Xing-wei GE Jun-bo YANG Jian-min GE Lei WANG Ning-fu GAO Yan LI Pei-zhang PAN Hao TONG Guo-xin ZHOU Liang YE Xian-hua XU Jian 2006Chinese Medical Journal2006,,20:23
7RNA-Seq analysis of yak ovary: improving yak gene structure information and mining reproduction-related genes显示文摘RNA-Seq,a high-throughput(HT)sequencing technique,has been used effectively in large-scale transcriptomic studies,and is particularly useful for improving gene structure information and mining of new genes.In this study,RNA-Seq HT technology was employed to analyze the transcriptome of yak ovary.After Illumina-Solexa deep sequencing,26826516 clean reads with a total of 4828772880 bp were obtained from the ovary library.Alignment analysis showed that 16992 yak genes mapped to the yak genome and 3734 of these genes were involved in alternative splicing.Gene structure refinement analysis showed that7340 genes that were annotated in the yak genome could be extended at the 5′or 3′ends based on the alignments been the transcripts and the genome sequence.Novel transcript prediction analysis identified 6321 new transcripts with lengths ranging from 180 to 14884 bp,and 2267 of them were predicted to code proteins.BLAST analysis of the new transcripts showed that1200?4933 mapped to the non-redundant(nr),nucleotide(nt)and/or SwissProt sequence databases.Comparative statistical analysis of the new mapped transcripts showed that the majority of them were similar to genes in Bos taurus(41.4%),Bos grunniens mutus(33.0%),Ovis aries(6.3%),Homo sapiens(2.8%),Mus musculus(1.6%)and other species.Functional analysis showed that these expressed genes were involved in various Gene Ontology(GO)categories and Kyoto Encyclopedia of Genes and Genomes pathways.GO analysis of the new transcripts found that the largest proportion of them was associated with reproduction.The results of this study will provide a basis for describing the normal transcriptome map of yak ovary and for future studies on yak breeding performance.Moreover,the results confirmed that RNA-Seq HT technology is highly advantageous in improving gene structure information and mining of new genes,as well as in providing valuable data to expand the yak genome information.LAN DaoLiang XIONG XianRong WEI YanLi XU Tong ZHONG JinCheng ZHI XiangDong WANG Yong LI Jian 2014Science China(Life Sciences)2014,57,9:23
8Applications of electrospun nanofibers显示文摘Polymeric nanofiber non-woven materials produced by electrospinning have extremely high sur-face-to-mass (or volume) ratio and a porous structure with excellent pore-interconnectivity. These characteristics plus the functionalities and surface chemistry of the polymer itself impart the nanofi-bers with desirable properties for a range of advanced applications. This review summarizes the recent progress in electrospun nanofibers, with an emphasis on their applications.FANG Jian NIU HaiTao LIN Tong WANG XunGai 2008Chinese Science Bulletin2008,53,15:19
9Flotation of indium-beard marmatite from multi-metallic ore显示文摘从在中国的云南省的 Dulong 多金属性的矿石的铟胡子铁闪锌矿的筹款被学习改进等级,锌的恢复和锌的铟在 Dulong 集中植物专注。当在铁闪锌矿筹款的使活跃之物独自比铜硫酸盐生产了好一些的 beneficiation,试验性的结果显示了与化学试剂 X-1 混合的那铜硫酸盐,分别地,当 concentrate 等级仍然保持未改变时,增加 10% 和 6% 的锌和铟恢复。另外,新使活跃之物在 pH 附近起作用 10,在铁闪锌矿筹款在石灰消费上允许大积蓄。另外,有在筹款的矿石泥浆的使活跃之物的一足够的激活的时间被需要完成铁闪锌矿矿石的好 beneficiation,这被发现了。TONG Xiong SONG Shaoxian HE Jian Alejandro Lopez-Valdivieso 2008Rare Metals2008,27,2:14
10Changes in immunological function after treatment with transarterial chemoembolization plus radiofrequency ablation in hepatocellular carcinoma patients显示文摘GUAN Hai-tao WANG Jian YANG Ming SONG Li TONG Xiao-qiang ZOU Ying-hua 2013Chinese Medical Journal2013,,19:14
11Multicenter Evaluation of the Molecular Line Probe Assay for Multidrug Resistant Mycobacterium Tuberculosis Detection in China显示文摘In order to evaluate the performance of a molecular Hain line probe assay(Hain LPA)for rapid detection of rifampicin and isoniazid resistance of Mycobacterium tuberculosis in China。LI Qiang DONG Hai Yan PANG Yu XIA Hui OU Xi Chao ZHANG Zhi Ying LI Jun Chen ZHANG Jian Kang HUAN Shi Tong CHIN Daniel P KAM Kai Man ZHAO Yan Lin 2015Biomedical and Environmental Sciences2015,28,6:13
12Removing phosphorus from aqueous solutions by using iron- modified corn straw biochar显示文摘修改铁的玉米稻草 biochar 被用作吸附物把磷从农业流量移开。什么时候有一个总数的农业流量 1.86 mg ī的磷(TP )Fenglin LIU Jiane ZUO Tong CHI Pei WANG Bo YANG 2015Frontiers of Environmental Science & Engineering2015,9,6:13
13Adenovirus-mediated expression of Tob1 sensitizes breast cancer cells to ionizing radiation显示文摘瞄准:调查 Tob1 基因的效果, ErbB2/B-cell 易位 Ggene (TOB/BTG ) 家庭的 Transducing 分子的一个成员,由在一个人在放射敏感度上使用 Tob1 的调停侵入人体气管粘膜的病菌的表示,乳癌房间衬里 MDA-MB-231。方法:房间幸存被 clonogenic 试金决定。Apoptosis 被 DNA 破碎胶化电气泳动和终端 deoxynucleotidyl 评估调停 transferase 的刻痕结束标记试金。蛋白质表示被西方的污点试金分析, DNA 修理被主人房间复活试金测量。结果:我们证明有 Ad5-Tob1 的照耀前治疗显著地增加了放射敏感度,伴随 apoptosis 的增加的正式就职和 DNA 损坏修理的压抑。而且, Ad5-Tob1-mediated 放射敏感度相关与起来 pro-apoptotic 蛋白质 Bax 的规定并且下面几 DNA 双海滨裂缝修理蛋白质,包括的 DNA 依赖的蛋白质家族 ases, Ku70 和 Ku80 的规定,和 X-ray-sensitive 互补组织 4。结论:作为新收音机抗体, Tob1 是在经由增加 apoptosis 并且压制 DNA 修理的乳癌的放射疗法的一个新目标。Yang JIAO Chun-min GE Qing-hui MENG Jian-ping CAO Jian TONG Sai-jun FAN 2007Acta Pharmacologica Sinica2007,28,10:12
14Interaction of aerodynamic roughness length and windflow conditions and its parameterization over vegetation surface显示文摘Surface aerodynamic roughness length is usually taken as a constant. In fact, it displays a remarkable dynamic change over underlying vegetation surfaces, because of the coupling of land surface roughness elements and windflow conditions. Current international research on this dynamic change and associated mechanisms is very limited. Using observations from different underlying surfaces (including forest, farmland and grassland) provided by a northern China coordinated observation test, the variation of aerodynamic roughness length, along with wind speed and friction velocity, is analyzed. We introduce two relationship fits, between aerodynamic roughness length and wind speed u, and dynamic variable u2/u*. Results show that aerodynamic roughness length has a clear dynamic change, and has complicated interactions with near-surface windflow. Further, the relationship fits between aerodynamic roughness length, u and u2/u*, are not only related to the roughness properties of the underlying vegetation surface (e.g. plant height), but also to plant dynamic response characteristics (e.g. flexibility). Aerodynamic roughness length decreases with increasing wind speed, because near-surface windflow conditions can change both plant roughness properties and airflow. However, the change of aerodynamic roughness length with friction velocity is complicated, and its sensitivities and transition points significantly depend on vegetation type. For underlying surfaces of forest and corn, with relatively substantial vegetative cover, roughness length correlates well with wind speed. For a surface with short vegetative cover, like natural lawn, the correlation is low. However, for all of the three vegetative surfaces, there is a close relation between roughness length and u2/u*, and their coefficients of fit from testing essentially represent the plant height and flexibility of different vegetation types. The test results also indicate that the parameterized relationships of roughness length over the underlying vegetation surface hold prospects for application.ZHANG Qiang ZENG Jian YAO Tong 2012Chinese Science Bulletin2012,57,13:12
15Comparison of the eighth version of the American Joint Committee on Cancer manual to the seventh version for colorectal cancer: A retrospective review of our data显示文摘AIM To analyze the survival trends in colorectal cancer(CRC) based on the different classifications recommended by the seventh and eighth editions of the American Joint Committee on Cancer staging system(AJCC-7^(th) and AJCC-8^(th)).METHODS The database from our institution was queried to identify patients with pathologically confirmed stage 0-Ⅳ CRC diagnosed between 2006 and 2012. Data from 2080 cases were collected and 1090 cases were evaluated through standardized inclusion and exclusion criteria. CRC was staged by AJCC-7^(th) and then restaged by AJCC-8^(th). Five-year disease-free survival(DFS) and overall survival(OS) were compared. SPSS 21.0 software was used for all data. DFS and OS were compared and analyzed by Kaplan-Meier and Log-rank test.RESULTS Linear regression and automatic linear regression showed lymph node positive functional equations by tumornode-metastasis staging from AJCC-7^(th) and tumornode-metastasis staging from AJCC-8^(th). Neurological invasion, venous infiltration, lymphatic infiltration, and tumor deposition put forward stricter requirements for pathological examination in AJCC-8^(th) compared to AJCC-7^(th). After re-analyzing our cohort with AJCC-8^(th),the percentage of stage ⅣB cases decreased from 2.8% to 0.8%. As a result 2% of the cases were classified under the new ⅣC staging. DFS and OS was significantly shorter(P = 0.012) in stage ⅣC patients compared to stage ⅣB patients.CONCLUSION The addition of stage ⅣC in AJCC-8^(th) has shown that peritoneal metastasis has a worse prognosis than distant organ metastasis in our institution's CRC cohort. Additional datasets should be analyzed to confirm these findings.Guo-Jun Tong Gui-Yang Zhang Jian Liu Zhao-Zheng Zheng Yan Chen Ping-Ping Niu Xu-Ting Xu 2018World Journal of Clinical Oncology2018,9,7:11
16Performance and mechanism for cadmium and lead adsorption from water and soil by corn straw biochar显示文摘Tong Chi Jiane Zuo Fenglin Liu 2017Frontiers of Environmental Science & Engineering2017,11,2:11
17Current Status and Future Challenges of Weather Radar Polarimetry: Bridging the Gap between Radar Meteorology/Hydrology/Engineering and Numerical Weather Prediction显示文摘After decades of research and development, the WSR-88 D(NEXRAD) network in the United States was upgraded with dual-polarization capability, providing polarimetric radar data(PRD) that have the potential to improve weather observations,quantification, forecasting, and warnings. The weather radar networks in China and other countries are also being upgraded with dual-polarization capability. Now, with radar polarimetry technology having matured, and PRD available both nationally and globally, it is important to understand the current status and future challenges and opportunities. The potential impact of PRD has been limited by their oftentimes subjective and empirical use. More importantly, the community has not begun to regularly derive from PRD the state parameters, such as water mixing ratios and number concentrations, used in numerical weather prediction(NWP) models.In this review, we summarize the current status of weather radar polarimetry, discuss the issues and limitations of PRD usage, and explore potential approaches to more efficiently use PRD for quantitative precipitation estimation and forecasting based on statistical retrieval with physical constraints where prior information is used and observation error is included. This approach aligns the observation-based retrievals favored by the radar meteorology community with the model-based analysis of the NWP community. We also examine the challenges and opportunities of polarimetric phased array radar research and development for future weather observation.Guifu ZHANG Vivek N.MAHALE Bryan J.PUTNAM Youcun QI Qing CAO ANDrew D.BYRD Petar BUKOVCIC Dusan S.ZRNIC Jidong GAO Ming XUE Youngsun JUNG Heather D.REEVES Pamela L.HEINSELMAN AlexANDer RYZHKOV Robert D.PALMER Pengfei ZHANG Mark WEBER Greg M.MCFARQUHAR Berrien MOORE III Yan ZHANG Jian ZHANG J.VIVEKANANDAN Yasser AL-RASHID Richard L.ICE Daniel S.BERKOWITZ Chong-chi TONG Caleb FULTON Richard J.DOVIAK 2019Advances in Atmospheric Sciences2019,36,6:9
18Tea plant genomics:achievements,challenges and perspectives显示文摘Tea is among the world’s most widely consumed non-alcoholic beverages and possesses enormous economic,health,and cultural values.It is produced from the cured leaves of tea plants,which are important evergreen crops globally cultivated in over 50 countries.Along with recent innovations and advances in biotechnologies,great progress in tea plant genomics and genetics has been achieved,which has facilitated our understanding of the molecular mechanisms of tea quality and the evolution of the tea plant genome.In this review,we briefly summarize the achievements of the past two decades,which primarily include diverse genome and transcriptome sequencing projects,gene discovery and regulation studies,investigation of the epigenetics and noncoding RNAs,origin and domestication,phylogenetics and germplasm utilization of tea plant as well as newly developed tools/platforms.We also present perspectives and possible challenges for future functional genomic studies that will contribute to the acceleration of breeding programs in tea plants.En-Hua Xia Wei Tong QiongWu ShuWei Jian Zhao Zheng-Zhu Zhang Chao-Ling Wei Xiao-Chun Wan 2020Horticulture Research2020,7,1:9
19Analysis and Design of Four-Plate Capacitive Wireless Power Transfer System for Undersea Applications显示文摘This paper presents a four-plate undersea capacitive wireless power transfer(CPT)system for underwater applications such as autonomous underwater vehicles(AUVs).Generally,a CPT system transfers the power based on electric fields.The complex resonant compensation networks are used to make the CPT system work in the resonant condition.The resonant voltage is always very high.It will be a big challenge to the human safety.In this paper,a virtual electrons periodic reciprocating flow theory is proposed for the CPT system.In one switching cycle,the electrons firstly flow in the forward direction through the forward path and then flow in the inverse direction through the inverse path.The CPT system has been deeply studied with the vacuum dielectric or the air dielectric.However,for the CPT system,there are few papers to show the underwater application.In this paper,an undersea four-plate CPT system is designed and studied in the underwater condition.The two coupling capacitors and other elements of the CPT system could build a closed-loop path.A small value inductor is adapted as a resonant compensation network for the four-plate CPT system.The DC voltage is inverted to the AC voltage in the primary side with the single-phase full-bridge inverter.The resonant voltage is rectified to the DC voltage in the secondary side with the single-phase full-bridge diode rectifier.A 100 W power level CPT system is constructed to verify the theory analysis and the calculation.The theory analysis is verified by the simulated and experimental results.The stable output voltage and load power are achieved in this paper.Lei Yang Yuanqi Zhang Xiaojie Li Jiale Jian Zhe Wang Jingjing Huang Li Ma Xiangqian Tong 2021CES Transactions on Electrical Machines and Systems2021,5,3:9
20Solidification Behavior and Segregation of Re-containing Cast Ni-base Superalloy with Different Cr Content显示文摘The effect of chromium(Cr) on solidification and segregation behavior of Re-containing cast Ni-base superalloys was investigated by optical microscopy(OM),scanning electron microscopy(SEM) and electronic probe micro analysis(EPMA).The results show that Cr has significant effect on solidification and segregation behavior of Re-containing cast Ni-base superalloys.The liquidus and solidus of alloy decrease with increasing Cr in alloys.The segregation coefficient(K) of Mo increases and that of W and Re decreases gradually with increasing Cr element.Xiurong Guan Enze Liu Zhi Zheng Yongsi Yu Jian Tong Yuchun Zhai 2011Journal of Materials Science & Technology2011,27,2:9
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