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Nuclear Science and Techniques 2007年第6期18卷 362-365页

作者： zhuO Weihai LIU Weiqi HUANG Gang zhu guoying MA Guocai Institute of Radiation Medicine Fudan University Shanghai 200032 China

In order to compare the dosimetric properties of two kinds of solid state detectors used for monitoring ex- ternal exposures,experiments were performed for the GD-300 series of radiophotoluminescent glass detectors (RPLGD)and the GR-200 series of thermoluminescent detectors(TLD).X-rays and ^(137)Cs and ^(60)Coγ-rays were used to irradiate the RPLGDs and TLDs,their dose linearity,uniformity/reproducibility of signal,fading effect and energy dependence were *** kinds of the detectors have generally good dosimetric *** dose linearity and energy dependence of the GD-351 dosimeters and the TLDs are nearly the same,but the RPLGD is much better than the TLD in terms of the uniformity and fading effect.

关键词：放射光致发光热致发光衰落效应能量反应剂量计

A rate-dependent Prandtl-lshlinskii model for piezoelectric actuators using the dynamic envelope function based play operator

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Frontiers of Mechanical Engineering 2015年第1期10卷 37-42页

作者： Meiju YANG Chunxia LI guoying GU Limin zhu State Key Laboratory of Mechanical System and Vibration School ofMechanical Engineering Shanghai Jiao Tong University Shanghai200240 China

In this paper, a novel rate-dependent Prandtl- Ishlinskii （P-I） model is proposed to characterize the rate- dependent hysteresis nonlinearity of piezoelectric actua- tors. The new model is based on a modified rate-dependent play operator, in which a dynamic envelope function is introduced to replace the input function of the classical play operator. Moreover, a dynamic density function is utilized in the proposed P-I model. The parameters of the proposed model are identified by a modified particle swarm optimization algorithm. Finally, experiments are conducted on a piezo-actuated nanopositioning stage to validate the proposed P-I model under the sinusoidal inputs. The experimental results show that the developed rate-dependent P-I model precisely characterize the rate- dependent hysteresis loops up to 1000 Hz.

关键词： piezoelectric actuators hysteresis Prandtl-Ishlinskii rate-dependent

Removal of microcystin-LR from drinking water using a bamboo-based charcoal adsorbent modified with chitosan

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Journal of Environmental Sciences 2011年第12期23卷 1983-1988页

作者： Hangjun Zhang guoying zhu Xiuying Jia Ying Ding Mi Zhang Qing Gao Ciming Hu Shuying Xu College of Biology and Environmental Sciences Hangzhou Normal University Hangzhou 310036 China Institute of Industry EP＆D Hangzhou 310005 China College of Environmental and Resource Sciences Zhejiang University Hangzhou 310058 China

A new kind of low-cost syntactic adsorbent from bamboo charcoal and chitosan was developed for the removal of microcystin-LR from drinking water. Removal effciency was higher for the syntactic adsorbent when the amount of bamboo charcoal was increased. The optimum dose ratio of bamboo charcoal to chitosan was 6：4, and the optimum amount was 15 mg/L; equilibrium time was 6 hr. The adsorption isotherm was non-linear and could be simulated by the Freundlich model （R2 = 0.9337）. Adsorption efficiency was strongly afflected by pH and natural organic matter （NOM）. Removal efficiency was 16% higher at pH 3 than at pH 9. Efficiency rate was reduced by 15% with 25 mg/L NOM （UV254 = 0.089 cm-1） in drinking water. This study demonstrated that the bamboo charcoal modified with chitosan can effectively remove microcystin-LR from drinking water.

关键词： adsorption bamboo charcoal chitosan microcystin-LR

Measurements of ^(134)Cs and ^(137)Cs in urine and estimation of the internal dose of an adult exposed to the Chernobyl Accident

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Nuclear Science and Techniques 2007年第2期18卷 115-117页

作者： ZHAO Shuquan HUANG Shibin LIU Shiming HU Heping WU Mingyu XIANG Xiqiao zhu guoying Institute of Radiation Medicine Fudan University Shanghai 200032 China Shanghai Medical College Fudan University Shanghai 200032 China Jinan Maritime Safety Administration of China Jinan 250062 China

To estimate the internal dose of a Chinese visiting scholar internally contaminated because of the Cherno- byl Accident, the contents of 134Cs and 137Cs in urine were measured using a Ge(Li) γ-spectrometer. The internal doses were calculated based on data from the ICRP Publications. The effective doses from 134Cs and 137Cs were estimated to be 61 μSv and 98 μ Sv, respectively. The sum of 159 μSv was lower than the total effective dose (310 μSv), from the inhalation and ingestion of natural radionuclides. The dose of 131I was also reviewed referring to the UNSCEAR 2000 Report. The equivalent effective dose of 131I was estimated to be 2.9 mSv, 18 times more than the amount of 134Cs and 137Cs. Therefore, it is considered that the earlier estimation of internal doses of 131I is important in evaluating radiation injuries from a nuclear reactor accident.

关键词：切尔诺贝利核事故成年人内照射剂量估计尿液铯134 铯137 光谱测定

Effect of intramuscular electro-acupuncture-mediated VEGF gene transfer on experimental limb ischemia

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Chinese Science Bulletin 1999年第15期44卷 1391-1397页

作者： Dongcheng Lu Zhengmao Ye Xuejun Tian Guanghui Chen Jian Tang guoying zhu Airu Zhou Beijing Med Univ Inst Cardiovasc Res Beijing 100083 Peoples R China

To investigate the feasibility of intramuscular electro-acupuncture-mediated VEGF gene transfer on experimental limb ischemia, the transcription and expression of VEGF gene have been detected with RT-PCR and immunohistochemistry staining, and the biological effect of VEGF gene inside the nat limb has been observed through vascular angiography. Results from angiography show that the transfer of VEGF gene into the rat with experimental limb ischemia can stimulate the formation of neovessel, establish collateral circulation, augment blood perfusion, and ameliorate distal limb necrosis. These findings reveal that intramuscular electro acupuncture-mediated VEGF gene transfer may present a new therapeutic modality for treating tissue ischemia.

关键词： electro-acupuncture gene transfer vascular endothellal growth factor occluslve angitis.

1981—2020年中国风速变化及其与大气环流的关系

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北京大学学报（自然科学版） 2024年第3期60卷 431-441页

作者：朱国营赵昕奕北京大学城市与环境学院北京100871

基于1981—2020年中国地面气象站观测数据,利用分段线性回归模型、Theil-Sen斜率估计、Mann-Kendall趋势检验以及逐步回归模型等方法,探究近40年中国近地面风速变化的区域差异及其与大气环流的关系。结果表明,1981—2020年的风速整体上... 详细信息

基于1981—2020年中国地面气象站观测数据,利用分段线性回归模型、Theil-Sen斜率估计、Mann-Kendall趋势检验以及逐步回归模型等方法,探究近40年中国近地面风速变化的区域差异及其与大气环流的关系。结果表明,1981—2020年的风速整体上呈下降趋势,西风、东风、南风和北风的风速下降幅度分别为-0.08,-0.06,-0.14和-0.14(m·s^(-1))/10a;不同时期风速的变化趋势有差异,在拐点年份前呈下降趋势,在拐点年份后呈上升趋势,且南风和北风的平均风速上升幅度大于西风和东风;不同区域和不同方向的风速变化存在差异,中国北部(西北、华北和东北地区)南风和北风的平均风速在2012年前后从下降趋势转为上升趋势,中国南部(华南地区)4个方向的平均风速在1990年前后从下降趋势变为上升趋势;大气环流与中国区域近地面风速的变化具有较强的相关性。亚洲极涡强度的年际变化指数在逐步回归模型中被保留的频率最高,与风速正相关,对中国北部风速的影响大于中部和南部;太平洋年代际振荡指数在逐步回归模型中被保留的频率最高,与风速负相关,对中国南部风速的影响显著小于北部和中部。

关键词：近地面风速大气环流指数中国区域

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Bystander-type Effect Mediated By Conditioned Medium In Osteoblast Afterγ-irradiation

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Bystander-type Effect Mediated By Conditioned Medium In Oste...

中华医学会第七次全国骨质疏松和骨矿盐疾病学术会议

作者： Xufang Li guoying zhu Jianping Wang Yu Wang Institute of Radiation Medicine Fudan University

Introduction Cancer patients experience many sequelae during and after *** many patients now surviving decades after treatment has ceased,it has been important concerns about late-stage sequelae and their effects on overall health and quality of life,including bone *** complications from radiation therapy have been described for breast,brain,pelvic,and blood ***,the etiology of nonmaligancy bone complications in cancer patients treated with radiotherapy remains unclear

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老年人冠心病介入治疗的进展及注意事项

中华老年医学杂志 1998年第5期17卷 259-261页

作者：朱国英北京医科大学第一医院心内科

德国Ｇｒüｎｔｚｉｇ于１９７７年成功地开展了第１例经皮腔内冠状动脉（冠脉）成形术（ＰＴＣＡ），开辟了冠心病治疗学上的新纪元。由于老年患者是一组具有特殊病理生理变化的人群，因此老年冠心病患者的介入治疗也具有其本身应注意... 详细信息

德国Ｇｒüｎｔｚｉｇ于１９７７年成功地开展了第１例经皮腔内冠状动脉（冠脉）成形术（ＰＴＣＡ），开辟了冠心病治疗学上的新纪元。由于老年患者是一组具有特殊病理生理变化的人群，因此老年冠心病患者的介入治疗也具有其本身应注意的一些特殊问题。一、老年人冠心病的...

关键词：老年人冠心病介入疗法冠状动脉成形

Effects of fluoride and cadmium co-exposure on bone in male rats

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中华医学会第五次中青年骨质疏松和骨矿盐疾病学术会议

作者： Xiao Chen Boyin Qin Xufang Li Taiyi Jin Wenjiang Zhou guoying zhu 复旦大学

Objective Although cadmium and fluoride may both have adverse effects on bone,most studies focus on a single *** this study,we investigated the effects of cadmium and fluoride on bone at a relative low level. Material...

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真菌降解挥发性有机物动力学模型研究

环境科学学报 2005年第10期25卷 1320-1324页

作者：朱国营刘俊新中国科学院生态环境研究中心

真菌生物滤池对废气的净化过程,不涉及液膜扩散以及过渡区等问题,因此与传统的细菌生物滤池的净化过程不同.在对真菌生物滤池净化低浓度乙硫醇废气的过程机理进行研究的基础上,建立了真菌生物滤池处理挥发性有机化合物的动力学模型,分... 详细信息

真菌生物滤池对废气的净化过程,不涉及液膜扩散以及过渡区等问题,因此与传统的细菌生物滤池的净化过程不同.在对真菌生物滤池净化低浓度乙硫醇废气的过程机理进行研究的基础上,建立了真菌生物滤池处理挥发性有机化合物的动力学模型,分别推导出用以描述乙硫醇在生物膜内生化过程的方程式和用以描述气流方向乙硫醇浓度轴向变化的方程式,二者共同描述乙硫醇废气在真菌生物滤池中的传输与被生物分解的过程.通过对含不同浓度乙硫醇废气处理的试验验证,所建立的真菌降解乙硫醇模型的模拟结果与实测结果具有较好的一致性.

关键词：生物滤池真菌废气乙硫醇动力学模型