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Development of Prototype Neutron Flux Monitor for ITER

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Plasma Science and Technology 2005年第3期7卷 2860-2862页

作者： yang jinwei song xianying Zhang Wei li xu Lee Wenzhong Wang Shiqing Xiao Gongshan yang Bo Lu Shuangtong Southwestern Institute of Physics Chengdu 610041China Beijing Nuclear Instruments Factory Beijing 100020China

The prototype neutron flux monitor consists of a high purity ^(235)U fission chamber detector and a'blank'detector,which is a fissile material free detector with the same dimension as the fission chamber detector to identify noise issues such as noise coming from gamma *** main parameters of the fission chamber assembly that have been measured in the laboratory are confirmed to approach the technological level of the International Thermonuclear Experimental Reactor(ITER)in the near *** prototype neutron flux monitor will be further developed to become a neutron flux monitor suitable for the operation phase of D-D fusion on the ITER.

关键词： neutron flux monitor fission chamber detector international thermonuclear experimental reactor(ITER) plateau characteristic curve discrimination threshold

Fusion Neutron Flux Monitor for ITER

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Southwestern Institute of Physics Annual Report 2004年第1期 47-50页

作者： yang jinwei ZHANG Wei song xianying li xu

It is necessary to develop a series of fission chamber in different sensitivities from high to very low sensitivity for covering the yield range of fusion neutron 10^13～10^21n·s-1 produced by ITER. The high sensitivity fission chamber employs high purity 235U as fissile material, 1 ～ 1.5 g 235U is coated on the multi-electrodes, its structure is shown in Fig. 1 （a）.

关键词： ITER NFM FC

Development of Electron Temperature Measuring System by Silicon Drift Detector

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Southwestern Institute of Physics Annual Report 2005年第1期 20-22页

作者： song xianying yang jinwei liAO Min li xu ZHANG Yipo FUBingzhong LUO Cuiwen

The soft X-ray spectroscopy, laser Thomson scattering and electron cyclotron emission （ ECE ） are usually adopted for electron temperature measurement in fusion research of magnetic confinement. The particular soft X-ray spectroscopy has the very good spatial-temporal resolution and smaller measuring error than laser Thomson scattering, a close spatial-temporal resolution to ECE, absolute measurement ability, and smaller influence by suprathermal and runaway electrons than ECE.

关键词： Soft X-ray spectroscopy Silicon drift detector Electron temperature

Observations of Runaway Electron Generation during Disruptions on HL-2A Tokamak

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Southwestern Institute of Physics Annual Report 2004年第1期 6-8页

作者： yang Qingwei yang jinwei song xianying CUI Zhengying li Wei ZHOU Hangyu DING xuantong

The major disruption can not only lead to the great heat loads and produce the large electromagnetic force on the first wall and divertor plates, but also can generate the runaway electrons. The runaway electrongenera... 详细信息

关键词： Runaway electron Disruption

Evolution of Electron Velocity Distribution during ECRH and Heating Effect Analysis

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Southwestern Institute of Physics Annual Report 2005年第1期 15-16页

作者： yang jinwei ZHANG Yipo liAO Min li xu song xianying FU Bingzhong RAO Jun li Yongge LUO Cuiwen CHEN liaoyuan

1 Electron velocity distributions and energy deposition of ECW Two set of soft X-ray spectra detection system consist of high performance sillicon drift detectors （SDD） , high speed A/D transform and processing software, software pulse height analyzer （SPHA）. They are installed at mid plane （ r=0 ） and undermid plane （ r=-16.4 cm ） of HL-2A tokamak respectively to measure the time evolution of soft X-ray spectra. According to spectrum, the thermal electron and superthermal electron temperatures are derived. Because of the ratio of peak counts to background counts is very high （p/b 〉1 400-3000 ） ,

关键词： ECRH SDD Electron velocity distribution

Synergetic Effects of Runaway Electron and Vertical Instability on the Wall Damage on HL-2A Tokamak

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Southwestern Institute of Physics Annual Report 2005年第1期 17-19页

作者： yang Yinwei YUAN Baoshan yang Qingwei ZHANG Yipo song xianying li xu ZHENG Yinjia CAO Zeng

1 Generation of vertical instability Tokamak experiments show that the energy confinement time and performance are better, and the larger plasma current can be achieved for non-circular cross-sectional shape of plasma than circular cross-section. However, the external magnetic fields which are used to produce the non-circular cross sectional shape also cause the confined plasma to become unstable to small vertical displacement. In general, the ratio of elongation k is larger, the possibility of instability is more. In practice, this vertical displacement mode stabilized by feedback control system or other provided external radial magnetic field to balance out the plasma motion. Under some of situations the control system may be fail due to rapid growth rate of instability exceeding the ability of controlling. The plasma will then move vertically upwards or downwards depending upon the characteristics of instability and control failure.

关键词： Runaway electron Vertical displacement episode(VDE) Halo current

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融合方向特性与不确定性的脉冲噪声滤波

中国图象图形学报 2017年第6期22卷 754-766页

作者：齐现英刘伯强徐建伟宋莉山东大学控制科学与工程学院济南250061 泰山医学院放射学院泰安271000 泰安市肿瘤防治院影像科泰安271000

目的随机噪声的噪声阈值具有不确定性和敏感性,寻找一个鲁棒的阀值是非常困难的,这严重影响了噪声的提取效率。为提高噪声判断的准确性,提出一种基于方向特性与中智不确定性融合的双端脉冲检测算法;另外,为加强优良像素在滤波过程中的权... 详细信息

目的随机噪声的噪声阈值具有不确定性和敏感性,寻找一个鲁棒的阀值是非常困难的,这严重影响了噪声的提取效率。为提高噪声判断的准确性,提出一种基于方向特性与中智不确定性融合的双端脉冲检测算法;另外,为加强优良像素在滤波过程中的权重,构建了一种基于像素中智不确定性和ROAD(rank-ordered absolute differences)统计量的新型双边滤波函数。方法在噪声检测阶段,首先根据ROLD(rank-ordered logarithmic difference)与噪声阈值T的关系,将污染图像的像素分为超限域像素(ROLD≥T)、邻限域像素(0.8T≤ROLD

关键词：随机脉冲噪声阈值敏感性双端噪声检测方向模板中智不确定性新双边滤波

测定菜籽油中酚类化合物样品前处理方法的比较

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中国油脂 2019年第12期44卷 131-135页

作者：宋军鸽曹晨李进伟徐勇将刘元法江南大学食品学院

采用液液萃取(LLE)、固相萃取(SPE)、QuEChERS 3种不同前处理方法提取菜籽油中酚类化合物,并采用超高效液相色谱串联质谱(LC-MS/MS)进行测定,分析比较了3种不同前处理方法对菜籽油中酚类化合物提取效果的影响。结果表明:在3种不同的前... 详细信息

采用液液萃取(LLE)、固相萃取(SPE)、QuEChERS 3种不同前处理方法提取菜籽油中酚类化合物,并采用超高效液相色谱串联质谱(LC-MS/MS)进行测定,分析比较了3种不同前处理方法对菜籽油中酚类化合物提取效果的影响。结果表明:在3种不同的前处理方法中,QuEChERS前处理方法的提取效果最好,对菜籽油中7种酚类化合物的回收率最高,可达85.16%~101.78%,基质共提物含量最低,为2.04 mg/g;LLE的回收率为66.04%~101.11%,基质共提物含量最高,为6.80 mg/g;SPE的回收率最低,仅为56.98%~83.79%,基质共提物含量为2.30 mg/g。

关键词：菜籽油酚类化合物 LLE SPE QuEChERS LC-MS/MS

疫苗—我国家禽免遭H5N1高致病性禽流感病毒侵害的强有力保护伞

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中国预防兽医学报 2023年第12期45卷 1317-1317页

作者： Jingman Tian Xiaoli Bai Minghui li xianying Zeng Jia xu Peng li Miao Wang Xingdong song Zhiguo Zhao Guobin Tian liling liu Yuntao Guan Yanbing li Hualan Chen State Key Laboratory for Animal Didease Control and Prevention Harbin Veterinary Research Institute Chinese Academy of Agricultural Sciences Harbin China (J. Tian X. Bai M. Li X. Zeng X. Song Z. Zhao G. Tian L. Liu Y. Guan Y Li H. Chen) Preventive and Control Center for Animal Disease of Heilongjiang Province Harbin (J. Xu P. Li M. Wang)

据世界动物卫生组织(WOAH)报告,自2020年10月以来,全球发生了9000多起由2.***.4.4b分支H5N1高致病性禽流感病毒(HPAIV)引起的疫情,导致大量野鸟和家禽死亡,规模前所未有。此外,该分支病毒感染了万余只野生哺乳动物(包括陆生和海洋哺乳动... 详细信息

据世界动物卫生组织(WOAH)报告,自2020年10月以来,全球发生了9000多起由2.***.4.4b分支H5N1高致病性禽流感病毒(HPAIV)引起的疫情,导致大量野鸟和家禽死亡,规模前所未有。此外,该分支病毒感染了万余只野生哺乳动物(包括陆生和海洋哺乳动物),并有报道称伴侣动物也被感染,该H5N1 HPAIV引起人与人之间的发病及大流行的风险正在逐渐增加。

关键词：世界动物卫生组织 H5N1 海洋哺乳动物伴侣动物病毒感染野生哺乳动物野鸟 HPAI