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中压缸启动机组切缸过程负荷异常波动的原因分析与处理

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广西电力 2008年第5期31卷 21-23页

作者：文立斌广西电力试验研究院有限公司广西南宁530023

为了解决汽轮发电机组中压缸启动切缸过程中负荷异常波动的问题,文章分析了不同旁路系统的中压缸启动切缸过程中负荷异常波动的原因,提出了切缸后可通过投入功率回路,控制好主蒸汽和再热蒸汽参数以及高、低压旁路阀门开度的方法,来降低... 详细信息

为了解决汽轮发电机组中压缸启动切缸过程中负荷异常波动的问题,文章分析了不同旁路系统的中压缸启动切缸过程中负荷异常波动的原因,提出了切缸后可通过投入功率回路,控制好主蒸汽和再热蒸汽参数以及高、低压旁路阀门开度的方法,来降低负荷的异常波动。

关键词：汽轮机中压缸启动切缸控制方法负荷异常波动

合山电厂330MW汽轮机组调试的故障分析和处理

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广西电力 2005年第2期28卷 20-22页

作者：文立斌广西电力试验研究院有限公司广西南宁530023

介绍合山电厂330MW汽轮发电机组启动调试过程中所遇到的启动疏水扩容器、低加疏水泵打不出水、冷却器堵塞、汽机振动大、注油试验电磁阀问题、汽机润滑油压低的试验设备等多种问题的分析和处理。

关键词： 330MW汽轮机调试故障

润滑油系统缺陷引发汽轮发电机组工作异常的原因分析及对策

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广西电力 2007年第1期30卷 52-53页

作者：文立斌广西电力试验研究院有限公司广西南宁530023

文章介绍了润滑油系统因润滑油管路布置不合理、油质差等缺陷引起机组振动超标、调节系统工作不正常的情况,并对该缺陷进行了分析,提出了解决该问题的具体方法和对策。

关键词：汽轮机润滑油系统调节系统振动

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油档积碳引起汽轮机转子振动异常分析和处理

广西电力 2010年第4期33卷 48-50页

作者：文立斌广西电网公司电力科学研究院广西南宁530023

介绍了广西某发电公司2号机组汽轮机轴系振动间歇式波动的故障特征、处理措施及其分析过程,指出了油垢碳化后的油档与汽轮机转子碰磨是造成该机组轴系振动异常的主要原因,对油档碳化油垢清除后轴系振动正常。给出该类型机组振动问题处... 详细信息

介绍了广西某发电公司2号机组汽轮机轴系振动间歇式波动的故障特征、处理措施及其分析过程,指出了油垢碳化后的油档与汽轮机转子碰磨是造成该机组轴系振动异常的主要原因,对油档碳化油垢清除后轴系振动正常。给出该类型机组振动问题处理方法。

关键词：汽轮机振动碰磨油档油垢碳化

Mortality and Morbidity of Extremely Low Birth Weight Infants in the Mainland of China： A Multi-center Study

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Chinese Medical Journal 2015年第20期128卷 2743-2750页

作者： Hui-Jia lin li-Zhong Du Xiao-Lu Ma li-Ping Shi Jia-Hua Pan Xiao-Mei Tong Qiu-Ping li Jian-Guo Zhou bing Yi ling liu Yun-bing Chen Qiu-Fen Wei Hui-Qing Wu Mei li Cui-Qing li Xi-Rong Gao Shi-wen Xia wen-bin li Chao-Ying Ya ling He Kun liang Xiao-Yu Zhou Shu-Ping Han Qin Lyu Yin-Ping Qiu wen li Dong-Mei Chen Hong-Ru Lu Xiao-Hong liu Hong liu Zhen-Lang lin li liu Jia-Jun Zhu Hong Xiong Shao-Jie Yue Si-Qi Zhuang Department of Neonatal Intensive Care Unit Children's Hospital of Zhejiang University School of Medicine Hangzhou Zhejiang 310053 China Department of Neonatology Anhui Provincial Hospital Hefei Anhui 230001 China Department of Pediatrics Peking University Third Hospital Beijing 100191 China Department of Neonatology BaYi Children's Hospital of the General Military Hospital of Beijing People's Liberation Army Beijing 100000 China Department of Neonatology Children's Hospital of Fudan University Shanghai 200032 China Department of Neonatology Gansu Provincial Maternity and Children-care Hospital Lanzhou Gansu 730050 China Department of Neonatotogy Guiyang Maternal and Child Health Care Hospital Guiyang Guizhou 550003 China Department of Neonatology Women and Children Hospital of Guangdong Province Guangzhou Guangdong 510010 China Department of Neonatology Guangxi Maternal and Child Health Hospital Nanning Guangxi 530003 China Department of Neonatology The Third Affiliated Hospital of Guangzhou Medical University Guangzhou Guangdong 510150 China Department of Neonatology Harbin Children's Hospital Harbin Heilongjiang 150010 China Department of Neonatology Children's Hospital of Hebei Province Shijiazhuang Hebei 050031 China Department of Neonatology Hunan Children's Hospital Changsha Hunan 410007 China Department of Neonatology Hubei Maternity and Child Heath Hospital Wuhan Hubei 430070 China Department of Pediatrics Tongji Hospital Affiliated to Tongji Medical College Huazhong University of Science and Technology Wuhan Hubei 430030 China Department of Neonatology The First Hospital of Jilin University Changchun Jilin 130021 China Department of Neonatology Jiangxi Provincial Children's Hospital Nanchang Jiangxi 330006 China Department of Pediatric First Affiliated Hospital of Kunming Medical University Kunming Yunnan 650032 China Department of Neonatotogy Nanjing Children's Hospital of Nanjing Medical University Nanjing Jiangsu 320100 China De

Background： With the progress ofperinatal medicine and neonatal technology, more and more extremely low birth weight （ELBW） survived all over the world. This study was designed to investigate the short-term ontcomes of ELBW infants during their Neonatal Intensive Care Unit （NICU） stay in the mainland of China. Methods： All infants admitted to 26 NICUs with a birth weight （BW）〈1000 g were included between January 1,2011 and December 31,2011. All the data were collected retrospectively from clinical records by a prospectively designed questionnaire. The data collected from each NICU transmitted to the main institution where the results were aggregated and analyzed. Categorical variables were performed with Pearson Chi-square test. binary Logistic regression analysis was used to detect risk factors. Results： A total of 258 ELBW infants were admitted to 26 NICUs, of whom the mean gestational age （GA） was 28.1 ± 2.2 weeks, and the mean BW was 868 ± 97 g. The overall survival rate at discharge was 50.0%. Despite aggressive treatment 60 infants （23.3%） died and another 69 infants （26.7%） died after medical care withdrawal. Furthermore, the survival rate was significantly higher in coastal areas than inland areas （53.6% vs. 35.3%, P = 0.019）. BW 〈750 g and GA 〈28 weeks were the largest risk factors, and being small for gestational age was a protective factor related to mortality. Respiratory distress syndrome was the most common complication. The incidence of patent ductus arteriosus, intraventricular hemorrhage, periventricular leukomalacia, bronchopulmonary dysplasia, retinopathy of prematurity was 26.2%, 33.7%, 6.7%, 48.1%, and 41.4%, respectively. Ventilator associated pneumonia was the most common hospital acquired infection during hospitalization. Conclusions： Our study was the first survey that revealed the present status of ELBW infants in the mainland of China. The mortality and morbidity of ELBW infants remained high as compared to other developed countries.

关键词： Extremely Low Birth Weight Infant Mortality National Survey

Controlled cationic ring-opening polymerization of L-lactide by organic ion pair: novel approach to isotactic-rich and crystalline polylactide

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Science China Chemistry 2025年第1期 394-402页

作者： Zhiqiang Ding Mingqian Wang Zijing Zhou bin Wang Yuesheng li Tianjin Key Laboratory of Composite & Functional Materials School of Materials Science and Engineering Tianjin University

living/controlled cationic ring-opening polymerization （ROP） of L-lactide is a promising approach to isotactic-rich and crystalline poly（L-lactide）.In contrast with the unsubstituted lactones,L-LA can not be polymerized by organic Lewis acids or carbenium ions,and the state of the art in this field is the cationic ROP of L-LA catalyzed by Br?nsted acid/alcohol system via activated monomer ***,we reported the first example of controlled cationic ROP of L-LA by using Meerweintype ion pair[Me3O]+[B（C6F5）4]-as the catalyst.[Me3O]+[B（C6F5）4]-promoted rapid L-LA cationic polymerization in the absence of alcohol,producing isotactic-rich and crystalline PLLA without transesterification and epimerization side *** activated chain end mechanism,involving twice SN2 substitution and configuration-inversion （S→R→S） with the assistance of released Me2O,was proposed and further verified by density functional theory and control *** work expands the catalytic toolbox of isotactic-rich and crystalline polylactide *** represents a unique example of cationic-controlled polymerization of L-LA catalyzed by an organic ion pair.

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An efficient quantum proactive incremental learning algorithm

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 49-57页

作者： lingxiao li Jing li Yanqi Song Sujuan Qin Qiaoyan wen Fei Gao State Key Laboratory of Networking and Switching Technology Beijing University of Posts and Telecommunications School of Cyberspace Security Beijing University of Posts and Telecommunications

In scenarios where a large amount of data needs to be learned, incremental learning can make full use of old knowledge, significantly reduce the computational cost of the overall learning process, and maintain high performance. In this paper, taking the MaxCut problem as our example, we introduce the idea of incremental learning into quantum computing, and propose a Quantum Proactive Incremental Learning algorithm(QPIL). Instead of a one-off training of quantum circuit, QPIL contains a multi-phase training on gradually-increased subgraphs of all vertices, proactively reducing large-scale problems to smaller ones to solve in steps, providing an efficient solution for MaxCut. Specifically, some vertices and corresponding edges are randomly selected for training to obtain optimized parameters of the quantum circuit at first. Then, in each incremental phase, the remaining vertices and corresponding edges are gradually added and the parameters obtained from the previous phase are reused in the parameter initialization of the current phase. We perform experiments on 120 different small-scale graphs, and it shows that QPIL performs superior to prevalent quantum and classical baselines in terms of approximation ratio(AR), time cost, anti-forgetting, and solving stability. In particular, QPIL's AR surpasses 20% of mainstream quantum baselines, and the time cost is less than 1/5 of them. The idea of QPIL is expected to inspire efficient and high-quality solutions in large-scale Max Cut and other combinatorial optimization problems.

关键词： variational quantum algorithm incremental learning multi-phase training MaxCut quantum computing

Cerebral ischemic preconditioning reduces glutamate excitotoxicity by up-regulating the uptake activity of GLT-1 in rats

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Cerebral ischemic preconditioning reduces glutamate excitoto...

猪传染性胃肠炎病毒分离株JS2012全基因组序列分析

中国神经科学学会第十届全国学术会议

作者： Min ZHANG Jian-Xue GONG Shu-Juan GONG lian-Wei ZHANG Yu-Yan HU Yi-Xian liU wen-bin li Department of Pathophysiology Hebei Medical University

Objective Our previous study has shown that cerebral ischemic preconditioning（CIP） up-regulated the expression of glial glutamate transporter-1（GLT-1） during the induction of brain ischemic tolerance in *** present study was undertaken to further explore the uptake activity of GLT-1 in the process by observing the changes in the concentration of extracellular *** The concentration of extracellular glutamate was detected by cerebral microdialysis and high performance liquid chromatography（HPLC）.Results（1） A significant pulse of glutamate concentration reached the peak value of 7 fold of the basal level after lethal ischemic insult,which was verified to induce delayed neuronal death（DND） in the CA1 hippocampus.（2） When the rats were pretreated 2 days before the lethal ischemic insult with CIP which protected the pyramidal neurons against DND,the peak value of glutamate concentration after the lethal ischemic insult decreased to about 3.9 fold of the basal level.（3） Furthermore,pre-administration of dihydrokainate,an inhibitor of GLT-1,the protective effect of CIP on both inhibiting the increase in extracellular glutamate concentration and protecting the pyramidal neurons against DND was *** These results indicate that CIP induced brain ischemic tolerance via up-regulating GLT-1 uptake activity for glutamate and then decreasing the excitotoxicity of glutamate.

关键词： cerebral ischemic preconditioning GLT-1 glutamate microdialysis HPLC dihydrokainate

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江苏农业学报 2016年第6期32卷 1351-1358页

作者：郭容利李彬范宝超温立斌茅爱华周萍何孔旺江苏省农业科学院兽医研究所/农业部兽用生物制品工程技术重点实验室/国家兽用生物制品工程技术研究中心江苏南京210014

设计32对PCR引物分片段扩增猪传染性胃肠炎病毒（TGEV）江苏分离株JS2012全基因组,扩增产物克隆到p MD19-T载体并测序。用DNAstar软件将JS2012全基因组序列与Gen Bank中其他13株TGEV株和猪呼吸道冠状病毒（PRCV-ISU-1）序列进行比对以... 详细信息

设计32对PCR引物分片段扩增猪传染性胃肠炎病毒（TGEV）江苏分离株JS2012全基因组,扩增产物克隆到p MD19-T载体并测序。用DNAstar软件将JS2012全基因组序列与Gen Bank中其他13株TGEV株和猪呼吸道冠状病毒（PRCV-ISU-1）序列进行比对以及同源性分析,并绘制基因进化树。JS2012基因组序列全长28 542 bp,不包括poly A。基因组的排列为TGEV典型的基因排列序：5＇-ORF1a-ORF1b-S-3a-3b-E-M-N-7-3＇。TGEV JS2012株的ORF3基因和Miller组病毒一样有2个大片段的缺失。JS2012的S基因和Miller M6以及Virulent Purdue 2个强毒株有同样的序列特征。除Virulent Purdue外,其余Purdue株在1 123~1 128 bp处均有6 bp的缺失,JS2012与所有Miller株及Virulent Purdue一样,此处没有缺失。JS2012与其他TGEV毒株之间的碱基序列同源性为98.6%-99.9%,与Miller M6的碱基序列同源性最高,亲缘关系最近,同属于Miller组,与Purdue组相对较远。

关键词：猪传染性胃肠炎病毒(TGEV) 全基因组序列分析