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类硅铑离子的3s^23p^(23)P_(1,2)-3s3p^(35)S_2的跃迁谱线

第十六届全国原子与分子物理学术会议

作者： L.Liljeby r.hutton Fudan university

A new low energy electron beam ion trap(EBIT) developed for spectroscopic research of moderate charge state ions in *** electron beam energy range of this EBIT is 250-5000 eV,while an ordinary EBIT used to be designed...

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上海交通大学学报 2002年第9期36卷 1370-1372页

作者：黄敏 r.hutton 邹亚明 K.Ando H.Oyama 上海交通大学物理系上海200030 隆德大学物理系复旦大学现代物理所上海200433 复旦大学理化研究所原子物理研究室

用束箔法研究了类硅铑离子的 3s2 3p2 3 P1,2 - 3s3p3 5S2 的禁戒跃迁谱线 .谱线识别从已知基态精细结构的分裂、基于分支比的强度比、相似的衰减特性、离子束能量下的谱线预期值方面着手 .识别后 ,通过对已知谱线的波长的等电子系列曲... 详细信息

用束箔法研究了类硅铑离子的 3s2 3p2 3 P1,2 - 3s3p3 5S2 的禁戒跃迁谱线 .谱线识别从已知基态精细结构的分裂、基于分支比的强度比、相似的衰减特性、离子束能量下的谱线预期值方面着手 .识别后 ,通过对已知谱线的波长的等电子系列曲线插值或外推来获得用于较刻的谱线的波长 ,然后较刻出 3s2 3p2 3 P1,2 - 3s3p3 5S2

关键词： 3s^23p^23P1,2-3s3p35S2 禁戒跃迁谱线束箔光谱 CCD探测器类硅铑离子跃迁几率束箔法原子结构

Partial Volume Correction in SPECT Using Anatomical Information and Iterative FBP

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Tsinghua Science and Technology 2010年第1期15卷 50-55页

作者： Kjell Erlandsson Brian F hutton The Institute of Nuclear Medicine University College LondonLondonNW12BUUnited Kingdom

The ability to correctly quantify activity concentration with single photon emission computed tomography （SPECT） is limited by its spatial resolution. Blurring of data between adjacent structures, which is known as partial volume effects, can be compensated for by utilizing high resolution structural information from other imaging modalities such as CT or MrI. Previously developed partial volume correction （PVC） methods normally assume a spatially invariant point spread function. In SPECT this is not a good approximation, since the resolution varies with the distance from the collimator. A new method, p-PVC, was developed in this paper, which takes into account the distance dependent blurring. The method operates in projection space and is combined with filtered back-projection （FBP） reconstruction. results from simulations show that similar quantitative results could be obtained with p-PVC＋FBP as with OSEM with resolution recovery, although with better structural definition and an order of magnitude faster.

关键词： partial volume effect (PVE) partial volume correction (PVC) SPECT

Changes with Age and the Effect of recombinant Human BMP-2 on Proteoglycan and Collagen Gene Expression in rabbit Anulus Fibrosus Cells

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Acta Biochimica et Biophysica Sinica 2006年第11期38卷 773-779页

作者： Hideki MUrAKAMI Kai-Jow TSAI William C.hutton Atlanta Veteran's Administration Medical Center Decatur 30033USA Department of Orthopaedics and Spine CenterEmory University School of MedicineAtlanta 30329USA

In order to compare the difference between young and old intervertebral disc cells and theirresponsiveness to recombinant human bone morphogenetic protein-2 (rhBMP-2),disc cells were isolatedfrom the anulus fibrosus (AF) and transition zones of lumbar discs from eight old and eight young NewZealand white *** with the ceils from the young rabbits,cells from old rabbits respond less torhBMP-2 treatment with respect to sulfated-glycosaminoglycan (sGAG) synthesis and aggrecan *** in collagen Ⅰ and collagen Ⅱ gene expressions,there are no significant differences betweenthe old and the *** comparing sGAG content,aggrecan,and collagen Ⅱ gene expression of the oldAF cells after rhBMP-2 treatment with that of the young AF cells without rhBMP-2 treatment,the old AFcells with rhBMP-2 treatment have a greater capacity to synthesize sGAG bound in the cells and to releasesGAG in the media,as well as to express aggrecan and collagen Ⅱ *** can be concluded that old AF cellsafter rhBMP-2 treatment have a greater capacity to synthesize sGAG and express aggrecan and collagen Ⅱ ascompared to young AF cells without rhBMP-2 *** rhBMP-2 can reverse the decline in theanabolic capacity of the disc cells with *** it seems that rhBMP-2 has potential for use as an agent toretard a key component of disc degeneration and loss of disc matrix.

关键词： ageing anulus fibrosus cells bone morphogenetic protein-2

A K-CELL injection system for SH-PermEBIT

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Nuclear Science and Techniques 2014年第4期25卷 21-23页

作者：韩川赵瑞峰施展 roger.hutton 路迪 The Key Lab of Applied Ion Beam Physics Ministry of Education Shanghai EBIT Laboratory Modern Physics InstituteFudan University

In this paper,we report a newly developed Knudsen Cell injection system for *** technique can overcome disadvantages of introducing organometallic gases and wired probes into EBIT and provide steady continuous injection.A specially designed vacuum line is used to ensure that the Knudsen Cell satisfies the vacuum level of *** this system we successfully injected ytterbium into the SH-permEBIT and recorded a spectrum in the visible wavelength region.

关键词：喷射系统注射系统 EBIT 有机气体波长范围真空度可见光细胞

K-shell excitation dielectronic recombination resonance strengths of highly charged Helike to O-like Xe ions

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Plasma Science and Technology 2018年第7期20卷 72-76页

作者： Tianheng XU Gang XIONG Jun XIAO Yang YANG roger.hutton Yarning ZOU Ke YAO Shanghai EBIT Laboratory Institute of Modem Physicsand Key Laboratory of Nuclear Physics and Ion-beam Application（MOE）Fudan UniversityShanghai 200433People＇s Republic of China research Center of Laser Fusion China Academy of Engineering PhysicsMianyang 621900People＇s Republic of China

Dielectronic recombination is an important process in high temperature plasmas. In the present work, the KLn （n=L, M, N and O） Dr resonance strengths of He-like to O-like xenon ions are measured at the Shanghai electron beam ion trap using a fast electron beam energy scanning method. The experiment uncertainty reaches about 6% with significant improvement of statistics. A relativistic configuration interaction calculation is also made. Theoretical results agree with the experiment results within 15% in most cases.

关键词： dielectronic recombination (Dr) electron ion beam trap (EBIT)

Sex-specific relationships between urbanization,parasitism,and plumage coloration in house finches

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Current Zoology 2021年第3期67卷 237-244页

作者： Brooke E.Sykes Pierce hutton Kevin J.McGraw School of Life Sciences Arizona State UniversityTempeAZ85287USA

Historically,studies of condition-dependent signals in animals have been male-centric,but recent work suggests that female ornaments can also communicate individual quality(e.g.,disease state,fecundity).There also has been a surge of interest in how urbanization alters signaling traits,but we know little about if and how cities affect signal expression in female *** measured carotenoid-based plumage coloration and coccidian(Isospora spp.)parasite burden in desert and city populations of house finches Haemorhous mexicanus to examine links between urbanization,health state,and feather pigmentation in males and *** earlier work,we showed that male house finches are less colorful and more parasitized in the city,and we again detected such patterns in this study for males;however,urban females were less colorful,but not more parasitized,than rural ***,contrary to rural populations,we found that urban birds(regardless of sex)with larger patches of carotenoid coloration were also more heavily infected with *** results show that urban environments can disrupt condition-dependent color expression and highlight the need for more studies on how cities affect disease and signaling traits in both male and female animals.

关键词： carotenoid pigmentation female ornaments Haemorhous mexicanus parasites urban ecology

Electron beam density imaging system at Beam study using a portable slit the Shanghai Electron Ion Trap

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Chinese Physics B 2011年第8期20卷 136-142页

作者： Yang Yang Lu Di Pu Yun-Qing Yao Ke Chen Wei-Dong Xiao Jun Geng Zhi-Xian roger.hutton Zou Ya-Ming The Key Laboratory of Applied Ion Beam Physics of Ministry of Education Shanghai 200433 China Shanghai Electron Beam Ion Trap Laboratory Institute of Modern Physics Fudan University Shanghai 200433 China

In this work, a portable slit imaging system is developed to study both the electron beam diameter and the profile of the newly developed Shanghai Electron Beam Ion Trap （Shanghai EBIT）. Images are detected by a charge coupled device （CCD） sensitive to both X rays and longer wavelength photons （up to visible）. Large scale ray tracings were conducted for correcting the image broadening effects caused by the finite slit width and the finite width of the CCD pixels. A numerical de-convolution method was developed to analyse and reconstruct the electron beam density distribution in the EBIT. As an example of the measured beam diameter and current density, the FWHM （full width at half maximum） diameter of the electron beam at 81 keV and 120 mA is found to be 76.2 μm and the density 2.00 × 10^3 ***-2, under a magnetic field of 3 T, including all corrections.

关键词： electron beam density slit imaging de-convolution

DYNAMIC rESPONSE OF A SDOF SELF-EXCITED SYSTEM TO A MODULATED EXCITATION

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DYNAMIC RESPONSE OF A SDOF SELF-EXCITED SYSTEM TO A MODULATE...