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Enhancement of magnetism of Zn0.95Co0.05O films by p-type Cu+ doping

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Progress in Natural Science:Materials International 2011年第1期21卷 31-35页

作者： Wei-chang HAO~(1,5),Jian-jun LI~2,Huai-zhe XU~3,Jia-ou WANG~4,Tian-min WANG~1 1.center of Materials Physics and Chemistry,Beihang University,beijing 100083,china 2.Department of Materials Science and Engineering, Anhui University of Science and Technology,Huainan 232001,china 3.Department of Physics,Beihang University,beijing 100083,china 4.beijing Synchrotron radiation Facility,Institute of High Energy Physics, Chinese Academy of Sciences,100049,china 5.Key Laboratory of Micro-nano Measurement,Manipulation and Physics, Ministry of Education,Beihang University,beijing 100191,china center of Materials Physics and Chemistry Beihang University Beijing 100083 China Key Laboratory of Micro-nano Measurement Manipulation and Physics Ministry of Education Beihang University Beijing 100191 China Department of Materials Science and Engineering Anhui University of Science and Technology Huainan 232001 China Department of Physics Beihang University Beijing 100083 China beijing Synchrotron radiation Facility Institute of High Energy Physics Chinese Academy of Sciences 100049 China

Zn0.95Co0.05O and Zn0.91Co0.05Cu0.04O thin films were fabricated on Si（111） substrate by the reactive magnetron sputtering method at different O-Ar *** characterizations by X-ray diffractometry（XRD）,X-ray photo-electronic spectrum（XPS）, and electron paramagnetic resonance（EPR） indicate that the doped Cu ions substitute the Zn2+ions in the ZnO *** doped Cu ions are in Cu+and Cu2+mixture valence *** ferromagnetism of the Zn0.91Co0.05Cu0.04O film increases gradually the increasing Cu+ions *** results indicate that the increase of ferromagnetism is not owing to the magnetic contribution of Cu+ions themselves,but owing to the enhancement of magnetic interaction between Co ions,which suggests that p-type doping of Cu+ions plays an important role in mediating the ferromagnetic coupling between Co ions.

关键词： Zn0.95Co0.05O films Zn0.91Co0.05Cu0.04O films magnetic semiconductors magnetic coupling co-doping

Survival of Human Metallothionein-2 Transplastomic Chlamydomonas reinhardtii to Ultraviolet B Exposure

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Acta Biochimica et Biophysica Sinica 2006年第3期38卷 187-193页

作者： Yu-Kun ZHANG~1 Gui-Fang SHEN~2 Bing-Gen RU~1*1 National Laboratory of Protein Engineering and Plant Genetic Engineering,Peking University,beijing 100871,china 2 Biotechnology Research Institute,the Chinese Academy of Agricultural Sciences,beijing 100081,china National Laboratory of Protein Engineering and Plant Genetic Engineering Peking UniversityBeijing 100871 China Biotechnology Research Institute the Chinese Academy of Agricultural SciencesBeijing 100081 China

Solar ultraviolet (UV) radiation has a great influence on green organisms,especially planktonlike Chlamydomonas.A human metallothionein-2 gene,which is generally considered to have an anti-radiationfunction by its coding product,was transferred into the chloroplast genome of Chlamydomonas *** dynamically measure the UV effects on Chlamydomonas cells grown in liquid tris-acetate-phosphatemedium,a new method was developed based on the relationship between the chlorophyll content of an algalculture and its absorbance at 570 nm after the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium *** this experiment,both the wild-type and the transplastomic *** ceils were cultivated in 96-well microplates containing liquid tris-acetate-phosphate medium in the absence or presence of zinc,copper,cadmium and *** transgenic *** showed a higher resistance than wild-type to UV-Bexposure under all the examined *** in the medium had positive impacts on both types of cells,but had significant influence only on the transplastomic ***,the high cell viability of the trans-genie alga at the end of the 8 h UV-B treatment disappeared after a 20-h recovery *** did notprotect cells from UV-B damage,but clearly enhanced the growth of both wild-type and transgenic ***.

关键词： ultraviolet B MTT transplastomic Chlamydomonas metallothionein

Evolution of desertification in a two-dimensional energy balance model coupled with thermodynamics and dynamics

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Science china Earth Sciences 2010年第11期53卷 1726-1733页

作者： CHAO JiPing1,2 & LI YaoKun3,4 1National Marine Environmental Forecasting center, beijing 100081, china 2First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, china 3State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, beijing 100029, china 4Graduate University of Chinese Academy of Sciences, beijing 100049, china National Marine Environmental Forecasting center Beijing China First Institute of Oceanography State Oceanic Administration Qingdao China State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics Institute of Atmospheric Physics Chinese Academy of Sciences Beijing China Graduate University of Chinese Academy of Sciences Beijing China

The relationship between desert evolution and change in albedo has been investigated quasi-analytically using a zonal mean two-dimensional energy balance model which considers the radiation transmission process due to thermodynamics and bound- ary layer movement caused by kinetics. A climate state including temperature, zonal wind, meridional wind and vertical wind can be simulated according to the current zonal distribution of albedo. Given desert distribution, characterized by the value and distribution of albedo, the response of climate on albedo has been studied to analyze the evolution of desert climate. One significant result is that the simple model can reproduce mean meridional circulation. Another result indicates that climate corresponds to two equilibria. This happens when the junction temperature between vegetation and desert is higher than a certain critical value. As for the first equilibrium, the desert belt is predicted to move southward in the northern hemisphere with the increasing values of albedo, which corresponds to the current trend of climate change. For the second equilibrium, vegetation will expand northward with increasing values of albedo, which would indicate a narrowing of the desert belt. In order to determine if the two equilibria exist, new physical models are needed.

关键词： two-dimensional energy balance model desertification two equilibria

5米光学02星高分辨率高灵敏度大幅宽热红外相机设计与实现

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遥感学报 2024年第3期28卷 601-609页

作者：童卫明李昊谦聂云松马军闫秀荣邢辉高长春王保华孙启扬蔡帅郝中洋李岩北京空间机电研究所先进光学遥感技术北京市重点实验室北京100094

2021年12月26日,5米光学02星在太原卫星发射中心成功发射,星上装载的主要载荷之一热红外相机采用8192元长线阵长波红外探测器推扫成像,可以获取星下点地面像元分辨率优于16 m、噪声等效温差小于0.1 K@300 K、幅宽大于115 km的7.7—10.5... 详细信息

2021年12月26日,5米光学02星在太原卫星发射中心成功发射,星上装载的主要载荷之一热红外相机采用8192元长线阵长波红外探测器推扫成像,可以获取星下点地面像元分辨率优于16 m、噪声等效温差小于0.1 K@300 K、幅宽大于115 km的7.7—10.5μm谱段热红外影像。相比国内外在轨热红外遥感相机,该相机同时实现高分辨率、高灵敏度和大幅宽观测,能够实现空间和温度的高效率精细化探测,具有明显优势。文章介绍了该相机的组成、工作原理、相机关键技术及实现情况,给出地面测试与试验结果,并简要介绍在轨测试和应用情况。相机目前在轨稳定运行,性能优异,已获取大量高分辨率热红外影像,可为后续同类载荷研制提供参考。

关键词：遥感热红外相机推扫红外探测器 5米光学02星

High-pressure synthesis and properties of CeO_2-ZrO_2 solid solution

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Chinese Science Bulletin 2001年第10期46卷 801-806页

作者： XU Dapeng, WANG Quanyong, LU Zhe, LIU Zhiguo, ZHANG Gongmu & SU Wenhui1. Department of Physics, Jilin University, Changchun 130023 china 2. International center for Materials Physics, Chinese Academy of Sciences, Shenyang 110015, china 3. center for Condensed Matter and radiation Physics, china center of Advanced Science and Technology (World Laboratory), beijing 100080, china Department of Physics Jilin University Changchun China International center for Materials Physics Chinese Academy of Sciences Shenyang China center for Condensed Matter and radiation Physics China Center of Advanced Science and Technology (World Laboratory) Beijing China

Using nanoparticles of CeO2 and ZrO2 prepared by the chemical precipitation method as starting materials, the single-phase cubic Ce0.5Zr0.5O2 solid solution (c-Ce0.5Z0.5O2) has been synthesized under 3.1 GPa at 1073 K for the first time. The structure of the c-Ce0.5Zr0.5O2 has not been changed before and after annealing at 773 K for 1 h. Only an unknown EPR signal (g =1.990) has been observed in the c-Ce0.5Zr0.5O2 and not varied after annealing at 773 K for 1 h, which exhibited that there exists no Ce3+ in the c-Ce0.5Zr0.5O2 and the Ce4+ has not been reduced into Ce3+ after annealing. The transport mechanism is ionic for the c-Ce0.5Zr0.5O2. The bulk conductivity (a =1.2×10-5 S/cm at 823 K, σ=2.1 ×10-3 S/cm at 1123 K) is the same as that of CeO2, but smaller than that of Y2O3-stabilized ZrO2. A marked curvature at T = 823 K has been observed in the Arrhenius plot of the bulk conductivity. The activation energy below 823 K is lower than that above 823 K, and the reason has been discussed.

关键词： CeO2-ZrO2 nanocrystalline high-pressure and -temperature solid-state reaction solid solution.

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原发性三叉神经痛靶区勾画和计划设计指南

中华放射肿瘤学杂志 2024年第7期33卷 585-598页

作者：国家癌症中心/国家肿瘤质控中心潘隆盛不详解放军总医院第一医学中心神经外科医学部北京100853

立体定向放射外科是原发性三叉神经痛的重要治疗方式。规范开展放射外科治疗对患者疼痛的控制和生活质量的提高具有重要意义。本指南涵盖了基于伽玛刀、射波刀等不同系统下原发性三叉神经痛放射外科治疗过程的全流程质量标准,包括靶区... 详细信息

立体定向放射外科是原发性三叉神经痛的重要治疗方式。规范开展放射外科治疗对患者疼痛的控制和生活质量的提高具有重要意义。本指南涵盖了基于伽玛刀、射波刀等不同系统下原发性三叉神经痛放射外科治疗过程的全流程质量标准,包括靶区定位和勾画、计划设计与优化、危及器官剂量限制和疼痛复发的影响因素及处理方式。以期基于不同单位实际条件及患者治疗情况,提高各级放疗单位针对原发性三叉神经痛放射外科治疗的规范化水平。

关键词：三叉神经痛,原发性立体定向放射外科靶区勾画放疗计划医学实践指南

Consensus of Chinese experts on glioma multidisciplinary team management(2nd edition)

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Chinese Medical Journal 2024年第11期137卷 1267-1270页

作者： Jinsong Wu Zhirui Zhou Zanyi Wu Zhiwei Tang Ming Li Siyuan Yin Xufei Luo Ling Wang Yaolong Chen Guoguang Zhao Tao Jiang Ying Mao The National Glioma MDT Alliance of National center for Neurological Diseases Department of Neurosurgery Huashan HospitalShanghai Medical CollegeFudan UniversityShanghai 200040China Department of radiation Oncology Huashan HospitalShanghai Medical CollegeFudan UniversityShanghai 200040China Department of Neurosurgery The First Affiliated Hospital of Fujian Medical UniversityFuzhouFujian 350005China Neurosurgery Department The First Affiliated Hospital of Kunming Medical UniversityKunmingYunnan 650032China Department of Neurosurgery Henan Provincial People’s HospitalPeople’s Hospital of Zhengzhou UniversityZhengzhouHenan 463599China State Key Laboratory of Pharmaceutical Biotechnology Institute for Brain SciencesAdvanced Institute for Life SciencesSchool of Life SciencesNanjing UniversityNanjingJiangsu 210023China Evidence-Based Medicine center School of Basic Medical SciencesLanzhou UniversityLanzhouGansu 730000China School of Public Health Lanzhou UniversityLanzhouGansu 730000China Department of Neurosurgery Xuanwu HospitalCapital Medical UniversityBeijing 100053China Department of Neurosurgery Beijing Tiantan HospitalCapital Medical UniversityBeijing 100050China 不详

To increase the consistency of glioma multidisciplinary team(MDT)management across different regions and hospitals at varying levels,we have updated the Expert Consensus on MDT of Glioma in china based on the currently available *** version has revised and updated the process-management rules and quality-control standards for a glioma MDT,providing reference and guidance for relevant clinical disciplines and *** members of the Consensus Expert Group,abstract,background,and prospects can be seen in supplementaryle,http://***/CM9/B999.

关键词： glioma MDT Expert

Ginsenoside Rg1 inhibits proliferation of vascular smooth muscle cells stimulated by tumor necrosis factor-α

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Acta Pharmacologica Sinica 2006年第8期27卷 1000-1006页

作者： Zeng-chun MA Yue GAO~2 Yu-guang WANG Hong-ling TAN Cheng-rong XIAO Sheng-qi WANG Institute of radiation Medicine Sciences,Academy of Military Medical Sciences,beijing 100850,china Institute of radiation Medicine Sciences Academy of Military Medical Sciences Beijing China

Aim:To investigate the proliferation of vascular smooth muscle cells(VSMC)affected by ginsenoside Rg1 and further explore the molecular mechanism ofginsenoside Rg1 using ***:The proliferation of VSMC wasmeasured by MTS assay kit and flow *** alterations were ana-lyzed using two-dimensional electrophoresis and peptide mass *** proteins found in proteomics were confirmed by ***:The proliferation of VSMC was enhanced significantly after tumor necrosis fac-tor-α(TNF-α)treatment,and ginsenoside Rg1 treatment inhibited proliferation ina dose-dependent *** analysis showed 24 protein spots werechanged,including 17 spots that were increased and 7 spots that were *** Rg1 could restore the expression levels of these proteins,at leastpartly,to basic levels of untreated *** expression of G-protein coupledreceptor kinase,protein kinase C(PKC)-ζ,N-ras protein were decreased,whilecycle related protein p21 was increased by ginsenoside Rgl in TNF-α ***:PKC-ζ and p21 pathway might be the mechanism for inhibi-tory effects of ginsenoside Rg1 on proliferation of VSMC.

关键词： cell cycle ginsenoside Rg1 proteomics tumor necrosis factor-α vascular smooth muscle cells

Influence of Zn ion implantation on structures and field emission properties of multi-walled carbon nanotube arrays

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Science china(Technological Sciences) 2010年第3期53卷 776-781页

作者： CHEN KeFan,DENG JianHua,ZHAO Fei,CHENG GuoAn &ZHENG RuiTing Key Laboratory of Beam Technology and Material Modification of Ministry of Education,College of Nuclear Science and Technology,beijing Normal University,beijing100875,china Key Laboratory of Beam Technology and Material Modification of Ministry of Education College of Nuclear Science and Technology Beijing Normal University Beijing China

The structures and field emission properties of multi-walled carbon nanotube arrays implanted with Zn+ by MEVVA ion implanter have been *** results revealed that Zn+implantation induced structural damage and that the top of carbon nanotubes with multi-layered graphite structure were transformed into carbon nanowires with amorphous ***,C:Zn solid solution was synthesized after Zn+ *** turn-on field and threshold field were 0.80 and 1.31 V/μm,respectively for original multi-walled carbon nanotube arrays and were reduced to 0.66 and 1.04 V/μm due to the synthesis of C and Zn composite,in which the work function was reduced after low doses of Zn+*** is indicated that low doses of Zn+implantation can improve field emission performance of multi-walled carbon nanotube ***,high doses of Zn+implantation can reduce field emission properties of multi-walled carbon nanotube arrays,because radiation damage reduces the electric field enhancement factor.

关键词： multi-walled carbon nanotubes ion implantation field electron emission