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| 1 | 大量风电引入电网时的频率控制特性显示文摘大量风力发电引入电网时,会对电网的频率控制带来影响。在深入分析异步电动机频率特性的基础上,采用所开发的电力扰动装置对不同转矩特性的异步电动机的频率特性进行了测试。基于加权综合的思路建立了包含异步电动机的综合负荷的频率特性模型。同时分析了风力发电的出力特性。通过对一个包含风力发电的电网进行分析,论证了考虑负荷频率特性以后,在同样电网调频能力的情况下,频率波动的偏差会变小。 | 韩民晓 崔军立 姚蜀军 Lie XU | 2008 | 电力系统自动化2008,32,1: | 64 |
| 2 | 不平衡电网电压下双馈感应发电机转子侧变换器的比例–谐振电流控制策略显示文摘为了研究不平衡电网电压条件下双馈感应风力发电机(doubly-fedinduction generator,DFIG)系统增强运行能力的有效控制策略,提出了网侧、转子侧变换器的比例–谐振电流控制方案以及两者之间的协同控制策略。针对电网电压不平衡条件下DFIG转子侧变换器,提出了一种在两相定子静止αβ坐标系中实施的比例–谐振(proportional-resonant,P-R)电流控制方案,以实现对DFIG转子电流无需正、负相序分解的统一调节。采用正序d+轴电网电压定向简化了各种增强运行能力控制目标下的转子正、负序电流指令值算法,设计了相应的DFIG不平衡控制策略。实验研究表明,这种P-R电流控制方案能够实现转子侧变换器选定控制目标,具备优良的动态调节性能,可增强不平衡电网电压故障下DFIG风力发电机系统的不间断运行能力。 | 胡家兵 贺益康 王宏胜 LIE Xu | 2010 | 中国电机工程学报2010,30,6: | 70 |
| 3 | 不平衡电网电压下双馈感应发电机网侧和转子侧变换器的协同控制显示文摘建立了不平衡电网电压下双馈感应发电机(doubly-fed induction generator,DFIG)网侧变换器的数学模型,讨论了交流输入电抗对瞬时有功功率的影响,在此基础上,提出4种可供选择的网侧变换器协同控制目标。为了验证网侧、转子侧变换器协同控制策略的有效性,提出静止αβ坐标系中比例?谐振控制器,使网侧变换器正、负序电流无需分解调节,并构建了DFIG网侧变换器的不平衡控制系统。仿真和实验研究结果表明,所提网侧、转子侧变换器协同控制策略可实现风电机组更为优化的不对称故障穿越(不间断)运行控制;所设计的网侧、转子侧变换器P-R电流控制方案不仅能够在稳态不平衡电网下提供精确的电流调节,而且在瞬态不平衡下体现优良的动态响应特性。 | 胡家兵 贺益康 王宏胜 LIE Xu | 2010 | 中国电机工程学报2010,30,9: | 62 |
| 4 | Adjuvant transcatheter arterial chemoembolization after curative resection for hepatocellular carcinoma patients with solitary tumor and microvascular invasion: a randomized clinical trial of efficacy and safety显示文摘Background:The optimal strategy for adjuvant therapy after curative resection for hepatocellular carcinoma(HCC)patients with solitary tumor and microvascular invasion(MVI)is controversial.This trial evaluated the efficacy and safety of adjuvant transcatheter arterial chemoembolization(TACE)after hepatectomy versus hepatectomy alone in HCC patients with a solitary tumor≥5 cm and MVI.Methods:In this randomized,open-labeled,phase III trial,HCC patients with a solitary tumor≥5 cm and MVI were randomly assigned(1:1)to receive either 1-2 cycles of adjuvant TACE after hepatectomy(Hepatectomy-TACE)or hepatectomy alone(Hepatectomy Alone).The primary endpoint was disease-free survival(DFS);the secondary end-points included overall survival(OS)and adverse events.Results:Between June 1,2009,and December 31,2012,250 patients were enrolled and randomly assigned to the Hepatectomy-TACE group(n=125)or the Hepatectomy Alone group(n=125).Clinicopathological characteristics were balanced between the two groups.The median follow-up time from randomization was 37.5 months[interquartile range 18.3-48.2 months].The median DFS was significantly longer in the Hepatectomy-TACE group than in the Hepatectomy Alone group[17.45 months(95%confidence interval[CI]11.99-29.14)vs.9.27 months(95%CI 6.05-13.70),hazard ratio[HR]=0.70(95%CI 0.52-0.95),P=0.020],respectively.The median OS was also significantly longer in the Hepatectomy-TACE group than in the Hepatectomy Alone group[44.29 months(95%CI 25.99-62.58)vs.22.37 months(95%CI 10.84-33.91),HR=0.68(95%CI 0.48-0.97),P=0.029].Treatment-related adverse events were more frequently observed in the Hepatectomy-TACE group,although these were generally mild and manageable.The most common grade 3 or 4 adverse events in both groups were neutropenia and liver dysfunction.Conclusion:Hepatectomy followed by adjuvant TACE is an appropriate option after radical resection in HCC patients with solitary tumor≥5 cm and MVI,with acceptable toxicity. | Wei Wei Pei-En Jian Shao-Hua Li Zhi-Xing Guo Yong-Fa Zhang Yi-Hong Ling Xiao-Jun Lin Li Xu Ming Shi Lie Zheng Min-Shan Chen Rong-Ping Guo | 2018 | Cancer Communications2018,38,1: | 62 |
| 5 | 一种开关磁阻风力发电机最大风能跟踪方法显示文摘对开关磁阻风力发电机的运行原理和风轮机的功率输出特性进行了介绍,提出了一种不依赖风轮机运行参数即可实现最大风能自动跟踪的变步长控制方法。使用Matlab/Simulink构建了整个系统的模型,进行了仿真,使用直流电动机模拟风力机对提出的最大风能跟踪控制方法进行了测试,系统仿真和试验结果证明该方法是可行的。 | 熊立新 徐丙垠 高厚磊 Lie Xu | 2009 | 电工技术学报2009,24,11: | 19 |
| 6 | Effect of multiple-phase regional intra-arterial infusion chemotherapy on patients with resectable pancreatic head adenocarcinoma显示文摘背景地区性的intra动脉的注入化疗( RIAC )是更珍贵的与不能实行的胰腺的腺癌改进病人的生活的预后和质量,并且辅助 RIAC 在延长幸存并且在胰腺的癌症的激进的切除术以后减少肝转移的风险起一个重要作用,但是外科手术前或多重阶段的 RIAC 的效果(外科手术前与手术后的 RIAC 结合了)为 resectable ,胰腺的癌症没被调查。在这未来的研究,为有 resectable 的病人的多重阶段的 RIAC 的效果胰腺的头腺癌被评估,并且它与手术后的 RIAC 作比较的安全和有效性也是有胰腺的头癌症随机被分到二个组的 resectable 的 assessed.Methods 病人。在组 A (n=50 ) 的病人与与多重阶段的 RIAC 相结合的扩大 pancreaticoduodenectomy 的新治疗学的模式被对待,并且那些在组 B (n=50 ) 被对待,扩大 pancreaticoduodenectomy 在一样的时期与手术后的 RIAC 结合了。新治疗学的模式的可行性,依从和效率被 RIAC 的肿瘤尺寸,浆液肿瘤标记,临床的利益反应(CBR ) ,外科的复杂并发症,死亡和毒性评估。没有疾病的幸存时间,中部的幸存时间,肝转移的发生,在 1, 2, 3 和 5 年的幸存率也被观察。生活曲线被在组 A 的疼痛消除率和 CBR 是的 Kaplan-Meier method.Results 产生 80% 和 84% 分别地。浆液肿瘤标记显然减少了,肿瘤尺寸在组 A 在外科手术前的 RIAC 以后在 26% 病人减少了。不再外科的复杂并发症,死亡或严重全身的副作用与组 B 相比在组 A 被观察。在组 A 的肝转移的发生是 34% 它在组 B 是比 50% 低的。在组 A 的没有疾病的幸存时间和中部的幸存时间分别地是 15.5 个月和 18 个月。1- , 2- , 3 年、 5 年的幸存率分别地是 54.87% , 34.94% , 24.51% 和 12.25% 。没有在多重阶段的 RIAC 是的二 groups.Conclusions 之间的幸存时间或幸存率的重要差别在 resectable 的联合治疗有效由提高肿瘤生长和肝转移的减小的抑制的胰腺的头癌,没有病人的安全或外科的过程上的否定效果。 | JIN Chen YAO Lie LONG Jiang FU De-liang YU Xian-jun XU Jin YANG Feng NI Quan-xing | 2009 | Chinese Medical Journal2009,,3: | 17 |
| 7 | Proportional integral plus multi-frequency resonant current controller for grid-connected voltage source converter under imbalanced and distorted supply voltage conditions显示文摘This paper proposes a current control scheme for a grid-connected pulse width modulator(PWM) voltage source converter(GC-VSC) under imbalanced and distorted supply voltage conditions.The control scheme is implemented in the positive synchronously rotating reference frame and composed of a single proportional integral(PI) regulator and multi-frequency resonant controllers tuned at the frequencies of 2ω and 6ω,respectively.The experimental results,with the target of eliminating the active power oscillations and current harmonics on a prototype GC-VSC system,validate the feasibility of the proposed current control scheme during supply voltage imbalance and distortion. | Jia-bing HU Wei ZHANG Hong-sheng WANG Yi-kang HE Lie XU | 2009 | Journal of Zhejiang University-Science A(Applied Physics & Engineering)2009,10,10: | 15 |
| 8 | 多端直流系统分区协调保护策略显示文摘针对多端直流系统的故障保护问题,首先分析了直流故障特性及多端直流系统保护难点,总结了现有多端直流系统故障保护方法。然后,基于一种典型的多端直流系统拓扑结构,以使用最少数量直流断路器为目标,提出了多端直流系统区域保护划分原则和分区保护策略。该方法将直流故障区域通过直流断路器与非故障区域进行隔离,从而使非故障区域可以继续维持正常运行,而故障区域则通过换流站交流侧断路器和直流侧开关进行保护和隔离。最后,通过MATLAB/Simulink仿真平台建模及仿真分析,验证了多端直流系统分区保护的有效性和经济性。 | 吴婧 姚良忠 王志冰 Md Habibur RAHMAN Lie XU 鲁宗相 | 2017 | 电力系统自动化2017,41,4: | 11 |
| 9 | Progress on Porous Ceramic Membrane Reactors for Heterogeneous Catalysis over Ultrafine and Nano-sized Catalysts显示文摘Heterogeneous catalysts with ultrafine or nano particle size have currently attracted considerable attentions in the chemical and petrochemical production processes, but their large-scale applications remain challenging because of difficulties associated with their efficient separation from the reaction slurry. A porous ceramic membrane reactor has emerged as a promising method to solve the problem concerning catalysts separation in situ from the reaction mixture and make the production process continuous in heterogeneous catalysis. This article presents a review of the present progress on porous ceramic membrane reactors for heterogeneous catalysis, which covers classification of configurations of porous ceramic membrane reactor, major considerations and some important industrial applications. A special emphasis is paid to major considerations in term of application-oriented ceramic membrane design, optimization of ceramic membrane reactor performance and membrane fouling mechanism. Finally, brief concluding remarks on porous ceramic membrane reactors are given and possible future research interests are also outlined. | JIANG Hong MENG Lie CHEN Rizhi JIN Wanqin XING Weihong XU Nanping | 2013 | Chinese Journal of Chemical Engineering2013,21,2: | 9 |
| 10 | Wind turbines output power smoothing using embedded energy storage systems显示文摘The ability of an energy storage system to improve the performance of a wind turbine(WT)with a fully rated converter was evaluated,where the energy storage device is embedded in the direct current(dc)link with a bidirectional dc/dc converter.Coordinated dc voltage control design of the line-side converter and the energy storage dc/dc converters was proposed using a common dc voltage measurement for smoothing the output power.A transfer function and Bode diagram were introduced to analyze the system performance with different control parameters.MATLAB/Simulink simulations are presented to demonstrate the effectiveness of the proposed methods.It was found that the proposed methods smooth the power output from the WT to the grid and thus improve the quality of the generated power. | Guoyi XU Lie XU Liangzhong YAO | 2013 | Journal of Modern Power Systems and Clean Energy2013,1,1: | 7 |
| 11 | 开关磁阻发电机最大输出功率的控制原则显示文摘对开关磁阻发电机的工作原理进行了介绍,基于线性模型下对开关磁阻发电机的输出功率进行了分析计算,根据推导出来的公式使用MATLAB建立了开关磁阻发电机的数学模型,针对影响开关磁阻发电机输出功率的设计参数和控制变量如开通角、关断角、母线电压、转速等逐一进行了仿真计算,提出了实现开关磁阻发电机最大输出功率的控制原则,并进行了部分实验验证。 | 熊立新 高厚磊 徐丙垠 XU Lie | 2009 | 电机与控制学报2009,13,2: | 6 |
| 12 | Operation of offshore wind farms connected with DRU-HVDC transmission systems with special consideration of faults显示文摘The diode rectifier unit(DRU)-based high-voltage DC(DRU-HVDC) system is a promising solution for offshore wind energy transmission thanks to its compact design, high efficiency, and strong reliability. Herein we investigate the feasibility of the DRU-HVDC system considering onshore and offshore AC grid faults, DC cable faults, and internal DRU faults. To ensure safe operation during the faults, the wind turbine(WT) converters are designed to operate in either current-limiting or voltage-limiting mode to limit potential excessive overcurrent or overvoltage. Strategies for providing fault currents using WT converters during offshore AC faults to enable offshore overcurrent and differential fault protection are investigated. The DRU-HVDC system is robust against various faults, and it can automatically restore power transmission after fault isolation. Simulation results confirm the system performance under various fault conditions. | Rui Li Lujie Yu Lie Xu | 2018 | Global Energy Interconnection2018,1,5: | 4 |
| 13 | Reducing Energy Loss and Morphology Optimization Manipulated by Molecular Geometry Engineering for Hetero-junction Organic Solar Cells显示文摘of main observation and conclusion Molecular geometry engineering is an efective strategy to control the micromorphology and molecularenergy level in organic photovoltaics(OPVs).Two novel copolymers based on alkysilyl-and chloride-functionalied benzodithiophene(BDT)were designed and synthesized for wide bandgap copolymer donor materials in OPVs.It was found that the two copolymers exhited distinctly different proper-ties in active layer when blended with fulerene-fre acceptor T-4.The chloride-functionalited copolymer PBDTCI-TZ2 with deeper molecular energy leveland better coplanar structure induced more ordered aggregation in blend flm.Thus,the device based on PBDTC-TZ exhibits better energy alinmentwith IT-4F and smallr radiative recombination.furthermore,the non-radiative recombination of PBDTCI-TZ.T-4F based device is about 45 mV lowerthan the PBDTS-TZ/T-4F based device,contributing to a lower enery loss(Ein,and a higher open-cicut voltage(Vc).As a resut,the devices based onthe blend of PBDTC-TZ2.IT-4F exhibit a high power conversion efficiency(PCE)of up to 12.2%with a high Vvoe of 0.837 Vv,higher than that of PBDTSi-TZ:IT-4F,of which the PCE is 11.2%with a Voc of 0.781V. | Guodong Xu Huan Rao Xunfan Liao Youdi Zhang Yuming Wang Zhi Xing Ting Hu Licheng Tan Lie Chen Yiwang Chen | 2020 | Chinese Journal of Chemistry2020,38,12: | 4 |
| 14 | Seropharmalogical Effects of Fuzheng Huayu decoction on rat Ito cell morphology and functions in culture显示文摘SeropharmalogicalEfectsofFuzhengHuayudecoctiononratItocelmorphologyandfunctionsincultureLIUChengHai,LIUCheng,LIUPingandXULi... | LIU ChengHai, LIU Cheng, LIU Ping and XU LieMing | 1997 | World Journal of Gastroenterology1997,3,4: | 3 |
| 15 | Kruppel-like factor 10 protects against acute viral myocarditis by negatively regulating cardiac MCP-1 expression显示文摘Viral myocarditis(VMC)is a cardiac disease associated with myocardial inflammation and injury induced by virus infection.Cardiomyocytes have recently been regarded as key players in eliciting and modulating inflammation within the myocardium.Kruppel-like factor 10(KLF10)is a crucial regulator of various pathological processes and plays different roles in a variety of diseases.However,its role in VMC induced by coxsackievirus B3(CVB3)infection remains unknown.In this study,we report that cardiac KLF10 confers enhanced protection against viral myocarditis.We found that KLF10 expression was downregulated upon CVB3 infection.KLF10 deficiency enhanced cardiac viral replication and aggravated VMC progress.Bone marrow chimera experiments indicated that KLF10 expression in nonhematopoietic cells was involved in the pathogenesis of VMC.We further identified MCP-1 as a novel target of KLF10 in cardiomyocytes,and KLF10 cooperated with histone deacetylase 1(HDAC1)to negatively regulate MCP-1 expression by binding its promoter,leading to activation of MCP-1 transcription and recruitment of Ly6C^(high) monocytes/macrophages into the myocardium.This novel mechanism of MCP-1 regulation by KLF10 might provide new insights into the pathogenesis of VMC and a potential therapeutic target for VMC. | Jie Yang Hongkai Zhang Xuelian Wang Jing Guo Lin Wei Yahui Song Yuan Luo YinXia Zhao Malayannan Subramaniam Thomas C.Spelsberg Lie Wang Wei Xu Min Li | 2021 | Cellular & Molecular Immunology2021,18,9: | 3 |
| 16 | Protection of large partitioned MTDC Networks Using DC-DC converters and circuit breakers显示文摘This paper proposes a DC fault protection strategy for large multi-terminal HVDC(MTDC)network where MMC based DC-DC converter is configured at strategic locations to allow the large MTDC network to be operated interconnected but partitioned into islanded DC network zones following faults.Each DC network zone is protected using either AC circuit breakers coordinated with DC switches or slow mechanical type DC circuit breakers to minimize the capital cost.In case of a DC fault event,DC-DC converters which have inherent DC fault isolation capability provide‘firewall’between the faulty and healthy zones such that the faulty DC network zone can be quickly isolated from the remaining of the MTDC network to allow the healthy DC network zones to remain operational.The validity of the proposed protection arrangement is confirmed using MATLAB/SIMULINK simulations. | Md Habibur Rahman Lie Xu Liangzhong Yao | 2016 | Protection and Control of Modern Power Systems2016,1,1: | 2 |
| 17 | Computational and Experimental Study of Cooling Process in Coke Dry Quenching Experimental Shaft显示文摘Owing to its merits in energy savings, environmental protection and coke quality improvement, the Coke Dry Quenching (CDQ) technology is favorite in coke making industry today. In order to validate the mathematical model developed for the cooling process of real CDQ shaft, the one-seventh scale experimental setup was established. With the air as the working fluid and the coke as the packed bed, the coke and gas temperatures and the pressure drop in the cooling shaft were measured. A mathematical model based on the non-Darcian and non-thermal equilibrium model for the cooling process of the CDQ experimental shaft was presented. The computational results were compared to the experimental data. It was found that most numerical predictions were supported by the measured values. | Huafei Liu Xinxin Zhang Maolin Wu Yanhui Feng Yingbo Wang Dinan Wang Lie Xu Wenghua Zheng | 2002 | Journal of Thermal Science2002,11,2: | 2 |
| 18 | Single-cell transcriptomic profiling unravels the adenoma-initiation role of protein tyrosine kinases during colorectal tumorigenesis显示文摘The adenoma-carcinoma sequence is a well-accepted roadmap for the development of sporadic colorectal cancer.However,cellular heterogeneity in aberrant epithelial cells limits our understanding of carcinogenesis in colorectal tissues.Here,we performed a single-cell RNA sequencing survey of 54,788 cells from patient-matched tissue samples,including blood,normal tissue,para-cancer,polyp,and colorectal cancer. | Xiaobo Zheng Jinen Song Chune Yu Zongguang Zhou Xiaowei Liu Jing Yu Guangchao Xu Jiqiao Yang Xiujing He Xin Bai Ya Luo Yu Bao Huifang Li Lie Yang Mingqing Xu Nan Song Xiaodong Su Jie Xu Xuelei Ma Hubing Shi | 2022 | Signal Transduction and Targeted Therapy2022,7,3: | 2 |
| 19 | Numerical and experimental study on coke size distribution in bell-type charging in the CDQ shaft显示文摘The mechanism of coke size segregation in the radial direction of pre-chamber in coke dry quenching(CDQ)shaft was investigated by experiment and numerical analysis.The experimental apparatus was a cold three-dimensional semicircle model for bell-type charging,which was used to study the influences of different kinds of bells and different stock line levels on the radial dis- tribution of coke size in the radial direction of a pre-chamber.A mathematical model was used,which is capable of estimating the radial average size distribution as well as the radial deposit distribution of each particle size for multiple size coke with a few fixed parameters.The calculated results agree well with the experimental data,which proves the reliability of both experimental study and numerical analysis. | Zhicheng Liu Yanhui Feng Xinxin Zhang Lie Xu Zhendong Yu | 2008 | Journal of University of Science and Technology Beijing2008,15,3: | 2 |
| 20 | Hydrogen-rich saline ameliorates the severity of l -arginine-induced acute pancreatitis in rats显示文摘 | Han Chen Yan Ping Sun Yang Li Wen Wu Liu Hong Gang Xiang Lie Ying Fan Qiang Sun Xin Yun Xu Jian Mei Cai Can Ping Ruan Ning Su Rong Lin Yan Xue Jun Sun Qiang Wang | 2010 | Biochemical and Biophysical Research Communications2010,,2: | 2 |