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| 1 | Precise nanomedicine for intelligent therapy of cancer显示文摘Precise nanomedicine has been extensively explored for efficient cancer imaging and targeted cancer therapy, as evidenced by a few breakthroughs in their preclinical and clinical explorations. Here, we demonstrate the recent advances of intelligent cancer nanomedicine, and discuss the comprehensive understanding of their structure-function relationship for smart and efficient cancer nanomedicine including various imaging and therapeutic applications, as well as nanotoxicity. In particular, a few emerging strategies that have advanced cancer nanomedicine are also highlighted as the emerging focus such as tumor imprisonment, supramolecular chemotherapy, and DNA nanorobot. The challenge and outlook of some scientific and engineering issues are also discussed in future development. We wish to highlight these new progress of precise nanomedicine with the ultimate goal to inspire more successful explorations of intelligent nanoparticles for future clinical translations. | Huabing Chen Zhanjun Gu Hongwei An Chunying Chen Jie Chen Ran Cui Siqin Chen Weihai Chen Xuesi Chen Xiaoyuan Chen Zhuo Chen Baoquan Ding Qian Dong Qin Fan Ting Fu Dayong Hou Qiao Jiang Hengte Ke Xiqun Jiang Gang Liu Suping Li Tianyu Li Zhuang Liu Guangjun Nie Muhammad Ovais Daiwen Pang Nasha Qiu Youqing Shen Huayu Tian Chao Wang Hao Wang Ziqi Wang Huaping Xu Jiang-Fei Xu Xiangliang Yang Shuang Zhu Xianchuang Zheng Xianzheng Zhang Yanbing Zhao Weihong Tan Xi Zhang Yuliang Zhao | 2018 | Science China Chemistry2018，61，12： | 19 |
| 2 | A DC Grid Benchmark Model for Studies of Interconnection of Power Systems显示文摘Reducing carbon emissions in the power sector is critical for transitioning to a sustainable and low-carbon future.Estimating carbon efficiency of demand side response(DSR)in the power system is an important step towards realizing potential environmental benefits.Marginal emission factor(MEF)is an effective tool for estimating incremental changes in carbon emissions as a result of a change in demand.However,estimation methods currently used for evaluating MEF can be improved upon,specifically,by factoring in the ramp-rate constraint of generators in the fuel cost based merit order dispatch.In this paper is described a new method for MEF assessment under ramp-rate constraints;the method is then compared with two conventional estimations in a British power system.Three fuel price scenarios are used to conduct a sensitivity analysis of MEFs to fuel prices.Conclusions are drawn that can pave the way for future improvements in estimating MEF in power systems. | Ting An Xiaoxin Zhou Congda Han Yanan Wu Zhiyuan He Hui Pang Guangfu Tang | 2015 | CSEE Journal of Power and Energy Systems2015，1，4： | 17 |
| 3 | COVID-19: Challenges to GIS with Big Data显示文摘The outbreak of the 2019 novel coronavirus disease(COVID-19)has caused more than 100,000 people infected and thousands of deaths.Currently,the number of infections and deaths is still increasing rapidly.COVID-19 seriously threatens human health,production,life,social functioning and international relations.In the fight against COVID-19,Geographic Information Systems(GIS)and big data technologies have played an important role in many aspects,including the rapid aggregation of multi-source big data,rapid visualization of epidemic information,spatial tracking of confirmed cases,prediction of regional transmission,spatial segmentation of the epidemic risk and prevention level,balancing and management of the supply and demand of material resources,and socialemotional guidance and panic elimination,which provided solid spatial information support for decision-making,measures formulation,and effectiveness assessment of COVID-19 prevention and control.GIS has developed and matured relatively quickly and has a complete technological route for data preparation,platform construction,model construction,and map production.However,for the struggle against the widespread epidemic,the main challenge is finding strategies to adjust traditional technical methods and improve speed and accuracy of information provision for social management.At the data level,in the era of big data,data no longer come mainly from the government but are gathered from more diverse enterprises.As a result,the use of GIS faces difficulties in data acquisition and the integration of heterogeneous data,which requires governments,businesses,and academic institutions to jointly promote the formulation of relevant policies.At the technical level,spatial analysis methods for big data are in the ascendancy.Currently and for a long time in the future,the development of GIS should be strengthened to form a data-driven system for rapid knowledge acquisition,which signifies ts that GIS should be used to reinforce the social operation parameterization of models and methods,especially when providing support for social management. | Chenghu Zhou Fenzhen Su Tao Pei An Zhang Yunyan Du Bin Luo Zhidong Cao Juanle Wang Wen Yuan Yunqiang Zhu Ci Song Jie Chen Jun Xu Fujia Li Ting Ma Lili Jiang Fengqin Yan Jiawei Yi Yunfeng Hu Yilan Liao Han Xiao | 2020 | Geography and Sustainability2020，1，1： | 13 |
| 4 | Grey GM(1,1) Model with Function-Transfer Method for Wear Trend Prediction and its Application显示文摘Trend forecasting is an important aspect in fault diagnosis and work state supervision. The principle, where Grey theory is applied in fault forecasting, is that the forecast system is considered as a Grey system; the existing known information is used to infer the unknown information’s character, state and development trend in a fault pattern, and to make possible forecasting and decisions for future development. It involves the whitenization of a Grey process. But the traditional equal time interval Grey GM (1,1) model requires equal interval data and needs to bring about accumulating addition generation and reversion calculations. Its calculation is very complex. However, the non equal interval Grey GM (1,1) model decreases the condition of the primitive data when establishing a model, but its requirement is still higher and the data were pre processed. The abrasion primitive data of plant could not always satisfy these modeling requirements. Therefore, it establishes a division method suited for general data modeling and estimating parameters of GM (1,1), the standard error coefficient that was applied to judge accuracy height of the model was put forward; further, the function transform to forecast plant abrasion trend and assess GM (1,1) parameter was established. These two models need not pre process the primitive data. It is not only suited for equal interval data modeling, but also for non equal interval data modeling. Its calculation is simple and convenient to use. The oil spectrum analysis acted as an example. The two GM (1,1) models put forward in this paper and the new information model and its comprehensive usage were investigated. The example shows that the two models are simple and practical, and worth expanding and applying in plant fault diagnosis. | LUO You xin 1 , PENG Zhu 2 , ZHANG Long ting 1 , GUO Hui xin 1 , CAI An hui 1 1Department of Mechanical Engineering, Changde Teachers University, Changde 415003, P.R. China 2 Engineering Technology Board, Changsha Cigare | 2001 | International Journal of Plant Engineering and Management2001，6，4： | 11 |
| 5 | Establishing a human pancreatic stem cell line and transplanting induced pancreatic islets to reverse experimental diabetes in rats显示文摘The major obstacle in using pancreatic islet transplantation to cure type I and some type II diabetes is the shortage of the donors. One of ways to overcome such obstacle is to isolate and clone pancreatic stem cells as 'seed cells' and induce their differentiation into functional islets as an abundant trans-plantation source. In this study, a monoclonal human pancreatic stem cell (mhPSC) line was obtained from abortive fetal pancreatic tissues. Pancreatic tissues were taken from abortive fetus by sterile procedures, and digested into single cells and cell clusters with 0.1% type IV collagenase. Cultured in modified glucose-low DMEM with 10% fetal bovine serum (FBS), these single cells and cell clusters adhered to culture dishes, and then primary epidermal-like pancreatic stem cells started to clone. After digesting with 0.25% trypsin and 0.04% EDTA, fibroblasts and other cells were gradually eliminated and epithelioid pancreatic stem cells were gradually purified during generations. Using clone-ring selection, the mhPSCs were obtained. After addition of 10 ng/mL epidermal growth factor (EGF) in cell culture medium, the mhPSCs quickly grew and formed a gravelstone-like monolayer. Continuously proliferated, a mhPSC line, which was derived from a male abortive fetus of 4 months old, has been passed through 50 generations. More than 1×109 mhPSCs were cryo-preserved in liquid nitrogen. Karyotype analysis showed that the chromosome set of the mhPSC line was normal diploid. Immunocytochemistry results demonstrated that the mhPSC line was positive for the pdx1, glucagon, nestin and CK19, and negative for the insulin, CD34, CD44 and CD45 protein expression. RT-PCR revealed further that the mhPSCs expressed transcription factors of the pdx1, glucagon, nestin and CK19. Also, in vitro induced with β-mercaptoethanol, the mhPSCs differentiated into nerve cells that expressed the NF protein. Induced with nicotinamide, the mhPSCs differentiated into functional islet-like clusters, as identified by di-thizone staining, which expressed the transcription factor of the insulin and secreted the insulin and C-peptide. Furthermore, the transplantation of mhPSCs-induced pancreatic islets into the subcapsular region of the kidney in streptozotocin-induced diabetic rats could reduce blood glucose levels and prolong the life time. | XIAO Mei AN LiLong YANG XueYi GE Xin QIAO Hai ZHAO Ting MA XiaoFei FAN JingZhuang ZHU MengYang DOU ZhongYing | 2008 | Science China(Life Sciences)2008，51，9： | 9 |
| 6 | Predictive validity of BODE index for anxious and depressive symptoms in patients with chronic obstructive pulmonary disease显示文摘背景焦虑和消沉是长期的妨碍的肺的疾病(COPD ) 的二最普通、很可修改的 comorbidities 并且在健康和预后上有独立效果。FEV1% 被显示了是焦虑和消沉的一个差的预言者。身体团索引,气流阻塞的度,呼吸困难,和锻练能力(预示) 索引是可以在 COPD 病人预言健康结果的一个多维的评价系统。这研究的目的是在这是的 COPD patients.Methods 为焦急、压抑的症状调查 BODE 索引的预兆的有效性 multicenter 在有稳定的 COPD 的 256 个病人的未来的代表性的学习。焦急、压抑的症状用医院焦虑和消沉规模(HADS ) 被估计。在焦虑,消沉和潜在的预言者之间的关系(包括 BODE 索引) 被一个二进制逻辑回归模型分析。焦急、压抑的结果题目走了更短的六分钟的走距离(6MWD ) ,有更多的呼吸困难,一更高预示索引,并且降低生活的健康相关的质量(P < 0.01 ) 。焦虑和萧条分数显著地被相关与预示指数,分别地(r=0.335, P < 0.001;r=0.306, P < 0.001 ) 。焦虑和消沉的流行增加了与预示舞台增加(P < 0.05 ) 。根据二进制逻辑回归,因为它包括了呼吸困难和 6MWD, BODE 索引是焦虑和消沉的一个好、独立的预言者,它被显示是主要 determinants.Conclusions 为焦虑和消沉的 BODE 索引的预兆的有效性被表明。我们建议 BODE 索引应该在对 COPD 严厉的评价被包括。 | AN Li LIN Ying-xiang YANG Ting ZHANG Hong JIAO Xia ZHANG Shu CHANG Xiao-hong WANG Zhao-mei WANG Chen | 2010 | Chinese Medical Journal2010，，14： | 8 |
| 7 | Grey System Judgment on Reliability of Mechanical Equipment显示文摘The Grey system theory was applied in reliability analysis of mechanical equipment.It is a new theory and method in reliability engineering of mechanical engineering of mechanical equipment. Through the Grey forecast of reliability parameters and the reliability forecast of parts and systems, decisions were made in the real operative state of equipment in real time. It replaced the old method that required mathematics and physical statistics in a large base of test data to obtain a pre check, and it was used in a practical problem. Because of applying the data of practical operation state in real time, it could much more approach the real condition of equipment; it was applied to guide the procedure and had rather considerable economic and social benefits. | LUO You xin, GUO Hui xin, ZHANG Long ting, CAI An hui, PENG Zhu Department of Mechanical Engineering,Changde Teachers University, Changde 415003, P.R.China | 2001 | International Journal of Plant Engineering and Management2001，6，3： | 7 |
| 8 | Effects of wind waves of the Pacific westerly on the eastern Pacific wave transport显示文摘There exists a tongue-shaped swell-dominance pool known as Swell Pool(SP) in the Eastern Pacific region.The monthly-mean wave transports(WT) for each month of 2000 is computed using the wave products of ECMWF reanalysis data.By comparing the 2000 monthly-mean WT and monthly-mean wind field from QUICKSCAT,large differences are found between the wave transport direction and the wind direction over the Eastern Pacific.This may serve as an evidence for the existence of the SP in this region.The work done in this study indicates that the sources of swell in the Tropical Eastern Pacific(TEP) are in the westerly regions of the Southern and Northern Pacific. | DENG Zeng' an WU Kejian ZHAO Dongliang YU Ting | 2009 | Acta Oceanologica Sinica2009，28，1： | 6 |
| 9 | Synthesis,crystal structure and thermal behavior of 4-amino-3,5-dinitropyrazole copper salt显示文摘A novel energetic combustion catalyst,4-amino-3,5-dinitropyrazole copper salt([Cu(adnp)2(H_2O)_2]),was synthesized in a yield of 93.6%for the first time.The single crystal of[Cu(adnp)2(H_2O)_2]was determined by single crystal X-ray diffraction.It crystallizes in a triclinic system,space group P'' with crystal parameters a = 5.541(3) A,b = 7.926(4) A,c= 10.231(5) A,β = 101.372(8),V= 398.3(3) A^3,Z= 1,μ = 1.467 mm^(-1),F(0 0 0) = 243,and Dc = 2.000 g cm^(-3).The thermal behavior and non-isothermal decomposition reaction kinetics of[Cu(adnp)_2(H_2O)_2]were studied by means of different heating rate differential scanning calorimetry(DSC).The kinetic equation of major exothermic decomposition reaction for[Cu(adnp)_2(H_20O_2]was obtained.The entropy of activation(AS*),enthalpy of activation(△H~≠),free energy of activation(AG~≠),the self-accelerating decomposition temperature(T_(SADT)) and the critical temperature of thermal explosion(T_b) are 59.42 J mol^(-1) K^(-1),169.5 kJ mol^(-1),1141.26 kJ mol^(-1),457.3 K and 468.1 K,respectively. | Ying-Lei Wang Feng-Qi Zhao Yue-Ping Ji Jian-Hua Yi Ting An Wei-Xiao Liu | 2014 | Chinese Chemical Letters2014，25，6： | 6 |
| 10 | Cathepsin B-responsive nanodrug delivery systems for precise diagnosis and targeted therapy of malignant tumors显示文摘The tumor microenvironment(TME)significantly influences cancer evolution and therapeutic efficacy.Targeting biofunctional molecules to the TME has long been appreciated as a means of raising local drug concentrations and reducing systemic toxicities.The booming nanotechnology field has realized the importance of cathepsin B to derive a variety of intelligent enzyme-responsive nanosized drug delivery systems(nanoDDS)to improve treatment responses and clinical outcomes.In this tutorial review,after introducing the molecular structure and physiological/pathological functions of cathepsin B,the outstanding achievements of cathepsin B-responsive nanoplatforms in the precise diagnosis,targeted therapy,and synergistic theranostics of malignant tumors are systematically described.Finally,the challenges of enzyme-substrate incompatibility,low diagnostic sensitivity,mass production and biocompatibility of multifunctional nanoDDS are considered in order to successfully promote them to clinical applications. | Yanan Li Ting Mei Shupeng Han Tao Han Yongbing Sun Hui Zhang Feifei An | 2020 | Chinese Chemical Letters2020，31，12： | 5 |
| 11 | Microwave strengthens decomposition of mixed rare earth concentrate: Microwave absorption characteristics显示文摘The potential application of microwave heating technology for processing the mixed rare earth concentrate was systematically investigated by analyzing the microwave absorption characteristics in this study. The complex permittivity was measured through resonant cavity perturbation method. The variations of permittivity, the loss factor, loss tangent and the penetration depth with the increasing temperature were investigated numerically. The results indicate that the permittivity increases as the temperature increases, and temperature has a pivotal effect on it. The mixed concentrate is high loss material at the temperature range from 600 to 800℃ according to theoretical analyses of loss tangent and penetration depth. The results of phase transition analysis prove that the variation of microwave absorption characteristics of mixed concentrate is caused by the changes of crystal and lattice structures.The reflectivity, loss factor and penetration depth of the mixed concentrate were also calculated, and the results indicate that processing the mixed concentrate by microwave heating is of high feasibility and industrial potential. | Yukun Huang Ting'an Zhang Zhihe Dou Guozhi Lv Guihong Han Weijun Peng | 2019 | Journal of Rare Earths2019，37，5： | 5 |
| 12 | Detection of Atrazine Residue in Food Samples by a Monoclonal Antibody-based Enzyme-linked Immunosorbent Assay显示文摘Atrazine(AT,2-chloro-4-ethylamino-6-isopropyl-amino-s-triazine)has been detected in ground water in several areas of the United States for many years,as well as in China,wherein the growth rate of its | LV Zhi Qiang WANG Cai Hong WANG Ting Ting CHEN Cui Cui WANG Ying NING Bao An LIU Ming LIU Jian Qing BAI Jia Lei PENG Yuan GAO Zhi Xian | 2013 | Biomedical and Environmental Sciences2013，26，5： | 5 |
| 13 | Numerical optimization for blades of Intermig impeller in solid-liquid stirred tank显示文摘The multiphase flow in the solid-liquid tank stirred with a new structure of Intermig impeller was analyzed by computational fluid dynamics(CFD).The Eulerian multiphase model and standard k-ε turbulence model were adopted to simulate the fluid flow,turbulent kinetic energy distribution,mixing performance and power consumption in a stirred tank.The simulation results were also verified by the water model experiments,and good agreement was achieved.The solid-liquid mixing performances of Intermig impeller with different blade structures were compared in detail.The results show that the improved Intermig impeller not only enhances the solid mixing and suspension,but also saves more than 20% power compared with the standard one.The inner blades have relatively little influence on power and the best angle of inner blades is 45°,while the outer blades affect greatly the power consumption and the optimized value is 45°. | Xiaolong Li Hongliang Zhao Zimu Zhang Yan Liu Ting’an Zhang | 2021 | Chinese Journal of Chemical Engineering2021，34，1： | 4 |
| 14 | Fargeted elimination of mutant mitochondria DNA in MELAS-iPSCs by mitoTALENs显示文摘 | Yi Yang Han Wu Xiangjin Kang Yanhui Liang Ting Lan Tianjie Li Tao Tan Jiangyun Peng Quanjun Zhang Geng An Yali Liu Qian Yu Zhenglai Ma Ying Lian Boon Seng Soh Qingfeng Chen Ping Liu Yaoyong Chen Xiaofang Sun Rong Li Xiumei Zhen Yang Yu Xiaoping Li Yong Fan | 2018 | Protein & Cell2018，9，3： | 4 |
| 15 | Procedures for congenital choledochal cysts and curative effect analysis in adults显示文摘Objective: To evaluate the procedures and timing ofoperation as well as long-term postoperative effect ofcongenital choledochal cysts (CCC) in adults.Methods: The procedures and timing of operation,effective rate, re-operation rate and incidence of car-cinoma after operation for 70 adult patients withCCC from January 1980 to June 1999 were analyzedretrospectively.Results: The re-operation rate of external drainagewas 86% (6/7). The effective rate of internal drain-age was significantly lower than that of cyst resection(3/10 vs 45/49, X^2=20. 94, P<0.001). The re-op-eration rate and incidence of carcinoma of internaldrainage were higher than those of cyst resection (5/10 vs 3/49, X^2=13. 64, P<0. 001 and 3/10 vs 3/49,X^2=5. 18, P<0. 025). The reoperation rate of e-mergency surgery was higher than that of selectiveoperation (8/10 vs 6/56, X^2=24. 37, P<0.001).Conclusions: External drainage should be the first-aid measure and the therapy of choice on emergencybasis. Internal drainage should never be attempted.Cyst resection with Roux-en-Y hepaticojejunostomy isrecommended as the treatment of choice in selectiveoperation. | Kai-Shan Tao Yong-Gang Lu Ting Wang Ke-Feng Dou the Department of Hepatobiliary Surgery, Xijing Hospital, Fourth Military Medical University, Xi’an 710032, China | 2002 | Hepatobiliary & Pancreatic Diseases International2002，1，3： | 4 |
| 16 | Brassinosteroid signaling positively regulates abscisic acid biosynthesis in response to chilling stress in tomato显示文摘Brassinosteroids(BRs)and abscisic acid(ABA)are essential regulators of plant growth and stress tolerance.Although the antagonistic interaction of BRs and ABA is proposed to ensure the balance between growth and defense in model plants,the crosstalk between BRs and ABA in response to chilling in tomato(Solanum lycopersicum),a warmclimate horticultural crop,is unclear.Here,we determined that overexpression of the BR biosynthesis gene DWARF(DWF)or the key BR signaling gene BRASSINAZOLE-RESISTANT1(BZR1)increases ABA levels in response to chilling stress via positively regulating the expression of the ABA biosynthesis gene 9-CIS-EPOXYCAROTENOID DIOXYGENASE1(NCED1).BR-induced chilling tolerance was mostly dependent on ABA biosynthesis.Chilling stress or high BR levels decreased the abundance of BRASSINOSTEROID-INSENSITIVE2(BIN2),a negative regulator of BR signaling.Moreover,we observed that chilling stress increases BR levels and results in the accumulation of BZR1.BIN2negatively regulated both the accumulation of BZR1protein and chilling tolerance by suppressing ABA biosynthesis.Our results demonstrate that BR signaling positively regulates chilling tolerance via ABA biosynthesis in tomato.The study has implications in production of warm-climate crops in horticulture. | Shengmin An Yue Liu Kangqi Sang Ting Wang Jingquan Yu Yanhong Zhou Xiaojian Xia | 2023 | Journal of Integrative Plant Biology2023，65，1： | 4 |
| 17 | Preparation of La2O3 by ion-exchange membrane electrolysis of LaCl3 aqueous solution显示文摘The ion-exchange membrane electrolysis technology was applied inventively in the preparation of lanthanum hydroxide,after calcination,lanthanum oxide was obtained eventually.The effect of the concentration of lanthanum chlo ride solution on electrolytic product was mainly investigated.The phase composition,micro morphology,particle size and chlorine content of the product were characterized,respectively.Under the conditions of this work,the product that forms by electrolysis of LaCl3 aqueous solution directly is La(OH)3.When the initial concentration of LaCl3 changes from 0.1 to 0.5 mol/L,the current efficiency of La(OH)3 increases from 60%to 85%,the product roasted at 800℃for 1.5 h is La2O3,whose median particle size(D50)is 10-20μm,the mass fraction of chloride ion is less than 0.02 wt%.Additio nally,the prepared La2O3 particles are porous and non-spherical particle s,which are composed of small crystals with sheet structure. | Deliang Meng Qiuyue Zhao Xijuan Pan Ting’an Zhang | 2019 | Journal of Rare Earths2019，37，9： | 3 |
| 18 | Novel biallelic TRNT1 mutations lead to atypical SIFD and multiple immune defects显示文摘Mutations in the gene encoding transfer RNA(tRNA)nucleotidyltransferase,CCAadding 1(TRNT1),an enzyme essential for the synthesis of the 30-terminal CCA sequence in tRNA molecules,are associated with a rare syndrome of congenital sideroblastic anemia,B cell immunodeficiency,periodic fevers,and developmental delay(SIFD).Clinical manifestations and immunological phenotypes were assessed in a Chinese patient with novel compound heterozygous mutations in TRNT1.The patient required multiple hospitalizations starting at the age of 2 years for recurrent fevers without an infective cause.During the febrile episode,the patient was found to have microcytic hypochromic anemia,B cell lymphopenia,and hypogammaglobulinemia.Targeted gene sequencing identified novel compound heterozygous mutations in the TRNT1 gene(c.525delT,p.Leu176X;c.938T>C,p.Leu313Ser).Immunophenotyping revealed increased CD8^+T cells,CD4^+ terminally differentiated effector memory helper T lymphocytes(CD4 TEMRA),and CD4^+ effector memory lymphocytes(CD4 EM).Analysis of CD4^+T subsets identified decreased T follicular helper cells(Tfh)with a biased phenotype to Th2-like cells.The patient also showed a lower percentage of switched memory B(smB)cells.Additionally,defects in the cytotoxicity of the patient’s NK andγτT cells were shown by CD107alpha expression.In conclusion,TRNT1 mutations may lead to multiple immune abnormality especially humoral and cytotoxicity defects,which indicate that SIFD is not only suffered‘Predominantly antibody deficiencies’in IUIS classification system,and further studies are needed to understand the pathogenesis of immunodeficiency in these patients. | Lu Yang Xiuhong Xue Ting Zeng Xuemei Chen Qin Zhao Xuemei Tang Jun Yang Yunfei An Xiaodong Zhao | 2020 | Genes & Diseases2020，7，1： | 3 |
| 19 | Research and application on multi-terminal and DC grids based on VSC-HVDC technology in China显示文摘Voltage source converter(VSC)-based high-voltage direct current(HVDC)and multi-terminal(MT)/DC grid technologies are the new HVDC transmission technologies after ultra-high voltage alternative current(UHVAC)and UHVDC transmission technologies which have been widely used in China.The application of the new technologies has resulted in a rapid increase in the number of schemes in construction and planning worldwide.This has been stimulated by the greater level of functionality available from the VSC technology,which makes it suitable for a wide variety of applications.These include the integration of off-shore wind farms,embedded links within AC networks and interconnectors,especially where the AC networks are relatively‘weak’.VSC technology has renewed interest in MT DC systems,which may ultimately lead to wide area DC grids.This study outlines the research and application on MT and DC grids in China with respect to VSC-HVDC key technologies and DC grid key technologies based on the presentation given in the International Workshop on Next Generation Power Equipment held on 23 September 2016 in Xian,China.The briefing details of the VSC-HVDC projects constructed and to be constructed in China are summarised in this study. | Ting An Guangfu Tang Weinan Wang | 2017 | High Voltage2017，2，1： | 3 |
| 20 | Power Reversal Strategies for Hybrid LCC/MMC HVDC Systems显示文摘Power reversal control strategies for different types of hybrid line-commutated-converter(LCC)/modular multi-level converter(MMC)based high-voltage direct-current(HVDC)systems have been proposed with the consideration of system configurations and MMC’s topologies.The studies show that the full-bridge(FB)MMC gives better performance than half-bridge(HB)MMCs in terms of power reversal in hybrid LCC/MMC systems.The modulation method employed in this paper can achieve a smooth online polarity reversal for hybrid LCC/FB-MMC HVDC systems.Additional DC switches and/or discharging resistors may be needed to reverse the DC polarity of LCC/HB-MMC HVDC systems.Based on the proposed strate-gies,the power reversal processes of the studied systems can be accomplished within several seconds.The speed can be changed according to system operation requirements.The effectiveness of the proposed control strategies has been verified through simulations conducted in PSCAD/EMTDC. | Gen Li Ting An Jun Liang Wei Liu Tibin Joseph Jingjing Lu Marcio Szechtman Bjarne R.Andersen Yuanliang Lan | 2020 | CSEE Journal of Power and Energy Systems2020，6，1： | 3 |
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