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hl-2m装置真空系统调试运行

核聚变与等离子体物理 2021年第S1期41卷 360-365页

作者：曹诚志曹曾冉红颉延风蔡潇季小全钟武律杨青巍毛维成 hl-2m研制团队核工业西南物理研究院成都610041

在装置初步建成阶段,有序地开展真空系统的调试内容梳理,制定合理的调试步骤和调试方案,有利于装置各系统的功能确认和故障排除,高效地开展各系统协同运行,为hl-2m装置初始等离子体放电提供装置辅助系统层面的放电条件准备。装置真空系... 详细信息

在装置初步建成阶段,有序地开展真空系统的调试内容梳理,制定合理的调试步骤和调试方案,有利于装置各系统的功能确认和故障排除,高效地开展各系统协同运行,为hl-2m装置初始等离子体放电提供装置辅助系统层面的放电条件准备。装置真空系统主要涉及超高真空抽气系统、器壁处理系统和送气加料系统等。基于制定的联调目标,针对hl-2m装置真空相关系统开展了界面关系梳理、子系统调试方案制定、系统工程联调步骤和方案的拟定等工作,通过联调完成了装置在真空获得、壁处理、加料等方面的条件准备,为初始放电提供了基本保障。

关键词： hl-2m装置真空系统系统调试

mechanism of temperature dependence of post-illumination transient increase in chlorophyll fluorescence in cyanobacterium Synechocystis PCC 6803

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Chinese Science Bulletin 1997年第16期42卷 1400-1403页

作者： mi, hl Ye, JY Wang, YJ Shen, YG Chinese Acad Sci Shanghai Inst Plant Physiol Shanghai 200032 Peoples R China

CYCLIC electron transport around photosystem I (PS I ) is considered physiologically important not only for its coupled formation of ATP, but also for its function on protection of the photosynthetic apparatus against... 详细信息

关键词： post-illumination transient increase in chlorophyll fluorescence cyclic electron transport around photosystem Ⅰ Synechocystis PCC 6803 physical phase of thylakoid membrane lipids.

OXIDATIVE　DEHYDROGENATION　OF　ETHANE（ODE）　OVER　LaOF　CATALYST　PROmOTED　WITH　BaF_2

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Chinese Chemical Letters 1995年第4期6卷 347-348页

作者： Zhou, XP Chao, ZS Wan, hl Tsai, KR Xiamen Univ Dept Chem Xiamen 361005 Peoples R China

The addition of BaF2 into LaOF catalyst significantly improves the catalytic properties of LaOF for the ODE reaction.

关键词： ODE ETHANE OVER LaOF DEHYDROGENATION BaF2 CATALYST

THE INVESTIGATION OF mETHANE OXIDATIVE COUPLING ON BaF_2-LaOF CATALYST

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Chinese Chemical Letters 1995年第8期6卷 715-719页

作者： Chao, ZS Zhou, XP Wan, hl Tsai, KR Xiamen Univ Dept Chem Xiamen 361005 Peoples R China Xiamen Univ State Key Lab Phys Chem Solid Surface Xiamen 361005 Peoples R China

The OCm reaction waa stndied on BaF2-LaOF catalyst and the results show that CH4 can be effectively activated and selectively converted to C2 Under the reaction conditions of CHSV=15000h-1and reaction temperature *** high C2 yield of 20.66% with CH4 conversion of 33.08% and C2 selectivity of 62.47% was obtained at CH4:O2=3: 1, and the high C2'selectivity of 84.55% with CH4 conversion of 16. 54% was obtained at CH4:O2=9: 1. XRD results suggest that tetragonal LaOF is the active phase in BaF2-LaOF catalyst.

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Overexpression of P-glycoprotein in hepatocellular carcinoma and its clinical implication

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World Journal of Gastroenterology 2000年第1期6卷 134-135页

作者： Kong XB Yang ZK Liang LJ Huang JF Lin hl Department of Surgery The First Affiliated HospitalChongqing University of Medical SciencesChongqing 400016China Division of Hepatobiliary Surgery The First Affiliated HospitalSun Yat-Sen University of Medical SciencesGuangzhou 510080Guangdong ProvinceChina Departrnent of Pathology Sun Yat-Sen University of Medical SciencesGuangzhou 510089Guangdong ProvinceChina

INTRODUCTIONmost advanced hepatocellular garcinoma (HCC) isinsensitive to most anticancer drugs which might berelated to the high frequency of expression of themultidrug resistance-1(mDR1) gene and itsproduct,P-glycop... 详细信息

关键词： Subject headings liver neoplasms carcinoma hepatocellular P-glycoprotein multidrug resistance-1 gene immunohistochemistry

Assessing the effect of invasive organisms on forests under information uncertainty: The case of pine wood nematode in continental Europe

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Forest Ecosystems 2024年第5期11卷 685-696页

作者： Nick Schafstall Laura Dobor marco Baldo Andrew mLiebhold Werner Rammer Juha Honkaniemi Tomás hlásny Faculty of Forestry and Wood Sciences Czech University of Life SciencesPragueCzech Republic US Forest Service Northern Forest Research Station MorgantownUSA Ecosystem Dynamics and Forest management Group Technical University of MunichGermany Natural Resources Institute Finland HelsinkiFinland

Forests worldwide are experiencing increasingly intense biotic disturbances;however,assessing impacts of these disturbances is challenging due to the diverse range of organisms involved and the complex interactions among *** particularly applies to invasive species,which can greatly alter ecological processes in their invaded *** we focus on the pine wood nematode(PWN,Bursaphelenchus xylophilus),an invasive pathogen that has caused extensive mortality of pines in East Asia and more recently has invaded southern *** is expected to expand its range into continental Europe with heavy impacts *** the unknown dynamics of PWN in continental Europe,we reviewed laboratory and field experiments conducted in Asia and southern Europe to parameterize the main components of PWN biology and host-pathogen interactions in the Biotic Disturbance Engine(BITE),a model designed to implement a variety of forest biotic agents,from fungi to large *** simulate dynamically changing host availability and conditions,BITE was coupled with the forest landscape model *** potential impacts of introducing PWN were assessed in a Central European forest landscape(40,928ha),likely within PWN’s reach in future decades.A parameter sensitivity analysis indicated a substantial influence of factors related to dispersal,colonization,and vegetation impact,whereas parameters related to population growth manifested a minor *** of different assumptions about biological processes resulted in differential timing and size of the main mortality wave,eliminating 40%–95%of pine trees within 100 years post-introduction,with a maximum annual carbon loss between 1.3%and 4.2%.PWN-induced tree mortality reduced the Gross Primary Productivity,increased heterotrophic respiration,and generated a distinct legacy sink effect in the recovery *** assessment has corroborated the ecological plausibility of the simulated dynamics and highlighted the need for

关键词： Biological invasions Process-based modelling Forest ecosystems model parameters

mapping aboveground biomass and its prediction uncertainty using LiDAR and field data, accounting for tree-level allometric and LiDAR model errors

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Forest Ecosystems 2020年第3期7卷 562-578页

作者： Svetlana Saarela AndréWästlund Emma Holmström Alex Appiah mensah Sören Holm mats Nilsson Jonas Fridman Göran Ståhl Faculty of Forest Sciences Swedish University of Agricultural SciencesSLU Skogsmarksgränd 17UmeåSE-90183Sweden

Background: The increasing availability of remotely sensed data has recently challenged the traditional way of performing forest inventories, and induced an interest in model-based inference. Like traditional design-based inference, model-based inference allows for regional estimates of totals and means, but in addition for wall-to-wall mapping of forest characteristics. Recently Light Detection and Ranging(LiDAR)-based maps of forest attributes have been developed in many countries and been well received by users due to their accurate spatial representation of forest resources. However, the correspondence between such mapping and model-based inference is seldom appreciated. In this study we applied hierarchical model-based inference to produce aboveground biomass maps as well as maps of the corresponding prediction uncertainties with the same spatial resolution. Further, an estimator of mean biomass at regional level, and its uncertainty, was developed to demonstrate how mapping and regional level assessment can be combined within the framework of model-based ***: Through a new version of hierarchical model-based estimation, allowing models to be nonlinear, we accounted for uncertainties in both the individual tree-level biomass models and the models linking plot level biomass predictions with LiDAR metrics. In a 5005 km2 large study area in south-central Sweden the predicted aboveground biomass at the level of 18 m×18 m map units was found to range between 9 and 447 mg·ha^-1. The corresponding root mean square errors ranged between 10 and 162 mg·ha^-1. For the entire study region, the mean aboveground biomass was 55 mg·ha^-1 and the corresponding relative root mean square error 8%. At this level 75%of the mean square error was due to the uncertainty associated with tree-level ***: Through the proposed method it is possible to link mapping and estimation within the framework of model-based inference. Uncertainties in both tree-level bio

关键词： Aboveground biomass assessment Forest mapping Gauss-Newton Regression Hierarchical model-Based inference LiDAR maps National Forest Inventory Uncertainty estimation Uncertainty map

NmR Studies of 3-Acylcamphor

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Chinese Chemical Letters 2000年第3期11卷 259-260页

作者： Li, ZN Liu, Xm Zheng, ZO Chen, hl Han, XW Chinese Acad Sci Dalian Inst Chem Phys Dalian 116023 Peoples R China

NmR studies of some chiral 3-acyclcamphor were Conducted. A complete assignment was given to 3-(4-pyridyl)carbonylcamphor by the 2D NmR technology. Assignments were also given to other beta-diketones. The results show... 详细信息

关键词： NmR 3-(4-pyridyl)carbonylcamphor acylcamphor beta-diketone

Characterization of plasma current quench during disruptions at hl-2A

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Plasma Science and Technology 2017年第5期19卷 1-5页

作者：竹锦霞张轶泼董云波 hl-2A Team School of Intelligent manufacturing Sichuan University of Arts and ScienceDazhou 635000People'sRepublic of China Southwestern Institute of Physics Chengdu 610041People's Republic of China 不详

The most essential assumptions of physics for the evaluation of electromagnetic forces on the plasma-facing components due to a disruption-induced eddy current are characteristics of plasma current quenches including the current quench rate or its waveforms. The characteristics of plasma current quenches at hl-2A have been analyzed during spontaneous disruptions. Both linear decay and exponential decay are found in the disruptions with the fastest current ***, there are two stages of current quench in the slow current quench case. The first stage with an exponential decay and the second stage followed by a rapid linear decay. The faster current quench rate corresponds to the faster movement of plasma displacement. The parameter regimes on the current quench time and the current quench rates have been obtained from disruption statistics at hl-2A. There exists no remarkable difference for distributions obtained between the limiter and the divertor configuration. This data from hl-2A provides basic data of the derivation of design criteria for a large-sized machine during the current decay phase of the disruptions.

关键词： tokamak disruption current quench