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A real-time beam loss monitoring system for storage ring of SSRF

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Nuclear Science and Techniques 2011年第1期22卷 5-8页

作者： CAI Jun XU Xunjiang XIA Xiaobin HOU Lei ZENG Ming wang Jianhua wang guanghong LIU Xin XU Jiaqiang Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201800China Department of Engineering Physics Tsinghua UniversityBeijing 100084China

In this paper we report the real-time beam loss monitoring (BLM) system at the storage ring of *** BLM-XS detectors and Ethernet data acquisition system are used in this *** applications and experiments of the BLM system are also *** BLM system provides dynamic information of beam loss for the storage ring,and is helpful to ensure the facility commissioning,investigate the problems of machine,optimize the machine parameters and further increase the beam lifetime.

关键词：监控系统储存环光源上海亏损实时数据采集系统 BLM

Preliminary design of high power magnet converter for CRAFT

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Plasma Science and Technology 2020年第4期22卷 113-120页

作者： Zhongma wang Peng FU Liansheng HUANG Zhiquan SONG Xiuqing ZHANG Tianbai DENG Tao CHEN Ronglin HUANG Zhenshang wang Xiaojiao CHEN Shiying HE Zejing wang guanghong wang Institute of Plasma Physics Chinese Academy of SciencesHefei 230031People's Republic of China University of Science and Technology of China Hefei 230026People's Republic of China

In order to test the superconducting magnet performance for the Comprehensive Research Facility for Fusion Technology(CRAFT)project of China,a power supply converter needs to be *** this paper,short circuits upstream and downstream of the direct current(DC)reactor are analyzed,and the thyristor style and the parallel number are determined by the limit analysis of junction temperature and fault current I^*** this basis,the over current and voltage verification of fast fuse are finished to protect the thyristor at fault cases by considering the short circuit of the bridge ***,the resistor and capacitor parameters of thyristor snubber are committed to decreasing the reverse over *** analysis results will be used as the preliminary design of high power magnet converter for CRAFT.

关键词： CRAFT converter thyristor fast fuse snubber

Potential effect of hepatitis C Virus non-structural protein 4B on liver carcinogenesis

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Journal of Nanjing Medical University 2006年第6期20卷 387-391页

作者： Xia Chen Changping Li Zhongqiong wang guanghong DU Deparment of Digestive disease Affiliated hospital of Luzhou Medical College Luzhou 646000China

Objective：To investigate the effect of hepatitis C virus non-structural protein 4B（HCV NS4B） on c-Myc, P53, ras gene expression＂ and apoptosis in hepatic cells and study the possible role that NS4B played in the carcinogenesis of heparoma. Methods： The recombinant plasmid（PCXN2-NS4B, PCXN2-P53） and the empty, vector were transfected or co-transfected into Chang liver cells with liposome. Screening was performed with G418. Plasmid mRNA was detected by RT-PCR. The pro rein expressions of c-Myc and ras genes were analyzed by immunocytochemistry. The expressions of wild-type P53 （wtp53） gene were detected by in situ hybridization. TUNEL（flow cytometry） was used for assessing the rate of apoptosis. Results：No expression of c-Myc gene was found in PCXN2 group. The expression of c-Myc gene in NS4B group was 21.3% ＋ 1.2%. The ex pression of ras gene in PCXN2 group was lower than that in NS4B group. Compared with PCXN2 group, the expression of P53 mRNA was not promoted or inhibited in NS4B group. But the expression of P53 mRNA in NS4B-P53 group was lower than that in P53 group. In PCXN2, NS4B, P53 and NS4B-P53 group, the rates of apoptosis were 17.02% ± 1.24%, 11.94% ± 2.24%, 25.84% ± 3.49% and 18.34% ± 1.55% respectively. Conclusion ：HCV NS4B induces the expression of c-Myc and ras gene. HCV NS4B may play a role in the inhibition of cell death through P53-dependent manner. Results from this study suggested that HCV NS4B might contribute to the viral carcinogenesis.

关键词： non-structural protein 4B tumor suppressor gene oncogene apoptosis

Monitoring system experiments on beam loss at SSRF injector

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Monitoring system experiments on beam loss at SSRF injector

第一届中国粒子加速器会议

作者： CAI Jun XIA XiaoBin XU XunJiang LIU Xin XU JiaQiang wang guanghong ZENG Ming Shanghai Institute of Applied Physics Chinese Academy of Sciences Department of Engineering Physics Tsinghua University

Experiments on beam loss by using beam loss monitoring(BLM) system were carried out at Shanghai Synchrotron Radiation Facility(SSRF) *** system used highly sensitive and current-integrated Si-photodiode detectors and an Ethernet data acquisition(DAQ) *** experimental results demonstrate that the Si-photodiode detectors are a useful tool that provides dynamic information on beam loss and investigates problems of machine *** also shows that the Si-photodiode BLM system is suitable for pulse-radiation of high-energy accelerators.

关键词： Si-photodiode beam loss monitoring(BLM) experiments Ethernet

来源： cnki会议评论

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基于定向长钻孔抽采瓦斯的数值模拟研究

矿业安全与环保 2021年第4期48卷 38-42页

作者：王广宏中煤科工集团重庆研究院有限公司重庆400037

针对新疆榆树田煤矿定向长钻孔预抽煤层瓦斯问题,结合5号煤层及顶底板岩层参数,建立了5号煤层瓦斯流固耦合随动渗流模型,分析了在一定的抽采负压和抽采时间下,定向长钻孔长度及钻孔间距对煤层瓦斯抽采量的影响。在抽采负压不变的情况下... 详细信息

针对新疆榆树田煤矿定向长钻孔预抽煤层瓦斯问题,结合5号煤层及顶底板岩层参数,建立了5号煤层瓦斯流固耦合随动渗流模型,分析了在一定的抽采负压和抽采时间下,定向长钻孔长度及钻孔间距对煤层瓦斯抽采量的影响。在抽采负压不变的情况下,瓦斯抽采总量会随着钻孔长度的增大而增大,但当钻孔长度增大到650 m左右时,瓦斯抽采总量趋于稳定,定向长钻孔合理长度定为650 m;钻孔间距越大,瓦斯抽采量越少,在钻孔间距从5 m增加到20 m的过程中,间距每增大5 m,抽采量约减少5%~7%。

关键词：定向长钻孔预抽煤层瓦斯流固耦合随动渗流模型钻孔参数数值模拟

TWO TYPES OF CENOZOIC HIGH-K MAGMATINSM IN EASTERN TIBET:IMPLICATIONS FOR THE NATURE OF MANTLE SOURCES

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地学前缘 2000年第S1期7卷 295-296页

作者： wang Jianghai, Xie guanghong[WT5,5”BX](Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Wushan, Guangzhou 510640, China)

Cenozoic high\|K igneous rocks are widely distributed in eastern Tibet. These rocks are exposed as flows, dykes and small intrusions along a narrow north\|south trending zone, which follows Tertiary fold belts and the Batang—Lijiang and Ailao Shan—Red River strike\|slip systems. Although several models were proposed to interpret their petrogenesis (Deng, 1989; Arnaud et al., 1991; Turner et al., 1996; Yin et al., 1995; Miller et al., 1999), their origin still remains hotly debated. Moreover, the published results were only focused on the high\|K igneous rocks resulted from partial melting of an enriched lithospheric mantle. Here, we present the detailed documents to testify the existence of a new kind of high\|K igneous rocks in eastern *** new 39 Ar/ 40 Ar age data (wang et al., 1999) and published age data for high\|K rocks in eastern Tibet show two distinctive magmatic episodes: one between 42Ma and 24Ma, and the other since ca.16Ma. They correspond to two types of high\|K magmatism in eastern Tibet. We name the older and younger groups as types Ⅰ and Ⅱ, respectively.

关键词： Cenozoic high\|K magmatism enriched and depleted mantle sour ce Pb\|Sr\|Nd isotopes transpressional and transtensional tectonics Eastern T ibet

地面井抽采卸压瓦斯技术在新疆大倾角多煤组矿区的应用

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矿业安全与环保 2021年第6期48卷 82-85页

作者：王广宏中煤科工集团重庆研究院有限公司重庆400037

针对新疆艾维尔沟矿区大倾角多煤组地表岩层移动与覆岩破坏特征,分析了大倾角多煤组地面井失稳机制,合理选择了地面井位置,优化了钻固井工艺及井身结构,并进行了适用性试验考察。试验工作面推过后井身结构稳定,套管基本未发生异常变形破... 详细信息

针对新疆艾维尔沟矿区大倾角多煤组地表岩层移动与覆岩破坏特征,分析了大倾角多煤组地面井失稳机制,合理选择了地面井位置,优化了钻固井工艺及井身结构,并进行了适用性试验考察。试验工作面推过后井身结构稳定,套管基本未发生异常变形破坏,地面井抽采瓦斯持续稳定,可为新疆矿区大倾角多煤组地面井高效抽采瓦斯提供技术支撑及示范作用。

关键词：地面井大倾角多煤组采动区卸压瓦斯瓦斯抽采

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^(40)Ar/^(39)Ar chronology and geochemistry of high-K volcanic rocks in the Mangkang basin, Tibet

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Science China Earth Sciences 2005年第1期48卷 1-12页

作者： ZHANG Huihua, HE Huaiyu, wang Jianghai & XIE guanghong Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China College of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, China Chinese Academy of Sciences Guangzhou Institute of Geochemistry Guangzhou China Chinese Academy of Sciences Institute of Geology and Geophysics Beijing China College of Life Sciences Sun Yat-Sen University Guangzhou China

Our two newly obtained high-quality 40Ar/39Ar ages suggest that the high-K volcanic rocks of the Lawuxiang Formation in the Mangkang basin, Tibet were formed at 33.5 ( 0.2 Ma. The tracing of elemental and Pb-Sr-Nd isotopic geochemistry indicates that they were derived from an EM2 enriched mantle in continental subduction caused by transpression. Their evidently negative anomalies in HFSEs such as Nb and Ta make clear that there is an input of continental material into the mantle source. The high-K rocks at 33.5 ( 0.2 Ma in the Mangkang basin may temporally, spatially and compositionally compare with the early one of two-pulse high-K rocks in eastern Tibet distinguished by wang J. H. Et al., implying that they were formed in the same tectonic setting.

关键词： Cenozoic high-K volcanic rocks, 40Ar/39Ar chronology, Mangkang basin, Tibet.

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基于瓦斯氧化技术的井筒加热系统

煤矿安全 2017年第4期48卷 107-110页

作者：王广宏中煤科工集团重庆研究院有限公司重庆400037

设计了基于瓦斯氧化技术的井筒加热系统,系统通过将乏风瓦斯与低浓度抽采瓦斯进行掺混,送入氧化装置,氧化后热量用于加热井筒,解决了煤矿排空瓦斯造成的浪费和对环境污染问题。详细介绍了系统各部分的设计。

关键词：乏风瓦斯瓦斯氧化氧化装置加热井筒方案设计