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Strengthening of the boreal winter Hadley circulation and its connection with ENSO

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Progress in Natural Science:Materials International 2007年第11期17卷 1327-1333页

作者： Ma Jie1,2.and Li Jianping2.1. college of Atmospheric Sciences, Lanzhou university, Lanzhou 730000,{2. 2. LASG, Institute of Atmospheric Physics, chinese Academy of Sciences, Beijing 10002.,{2.) college of Atmospheric Sciences Lanzhou University Lanzhou 730000 China LASG Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100029 China

Empirical orthogonal function (EOF) analysis is carried out for the year-to-year variability of the boreal winter (DJF) mass stream function of the mean meridional circulation (MMC) during the period 1948—2.05. The results demonstrate that it is dominated by the equatorially asymmetric and symmetric modes. Further analysis shows that the former mode is linked with the boreal winter Hadley cell mainly on the decadal time-scale, and the latter on the interannual time-scale. The asymmetric mode index (AMI) with a clear upward trend contributes to the decadal strengthening of the boreal Hadley circulation, and is closely correlated with the tropical SST warming, especially in the region of Indo-west Pacific warm pool (INWP). Furthermore, the AMI also contributes to the abrupt change of the correlation coefficient between the boreal Hadley circulation and ENSO after 1976. The symmetric mode index (SMI) with robust and stable linkage with ENSO shows a significant interannual variability, suggesting that the variability of the Hadley circulation is mainly associated with ENSO on the interannual time-scale.

关键词： the Hadley circulation interannual time-scale decadal time-scale

Adjoint method for the optimum planning of industrial pollutant sources

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Science china Earth Sciences 2005年第8期48卷 1270-1279页

作者： LIU Feng1,2. HU Fei2.& ZHU Jiang2.1. college of Environmental Sciences, Peking university, Beijing 100871,{2. 2. LAPC, Institute of Atmospheric Physics, chinese Academy of Sciences, Beijing 10002.,{2. 1. college of Environmental Sciences Peking University 100871 Beijing China 2. LAPC Institute of Atmospheric Physics Chinese Academy of Sciences 100029 Beijing China

The optimum planning of industrial pollutant sources, which optimizes the economic object without violating environmental constraints, is an important and hard task to be conquered. In this paper, an adjoint method is developed to solve the problem. The penalty function is in-troduced to deal with the environmental inequality constraints, and Lagrange function is con-structed to derive the adjoint equation and the gradient of the object function. In this means, the gradient of the object function can be calculated by solving the adjoint equation, and the infor-mation from the gradient is used to make the object function descend and approach to an optimal solution after some iterations. A two-dimensional, simplified model is used for numerical experi-ments. The theoretical derivations are verified by the results of the experiments. Furthermore, the adjoint method is shown to be of excellent convergence and efficiency, which is adaptive to the fast development of air quality numerical models and super computers.

关键词： optimum planning, industrial pollutant sources, adjoint equation, penalty function, gradient.

Application of Cone-beam Computed Tomography in Interventional Therapies for Liver Malignancy:A Consensus Statement by the chinese college of Interventionalists

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Journal of Clinical and Translational Hepatology 2024年第10期12卷 886-891页

作者： Bin-Yan Zhong Zhong-Zhi Jia Wen Zhang Chang Liu Shi-Hong Ying Zhi-Ping Yan Cai-Fang Ni Clinical Guidelines Committee of chinese college of Interventionalists Department of Interventional Radiology The First Affiliated Hospital of Soochow UniversitySuzhouJiangsuChina Department of Interventional and Vascular Surgery The Affiliated Changzhou Second People’s Hospital of Nanjing Medical UniversityChangzhouJiangsuChina Department of Interventional Radiology Zhongshan HospitalFudan University Shanghai Institution of Medical ImagingFudan UniversityShanghaiChina Division of Liver Department of General SurgeryWest China HospitalSichuan UniversityChengduSichuanChina Department of Minimal Invasive Surgery Shangjin Nanfu HospitalChengduSichuanChina Department of Radiology First Affiliated HospitalZhejiang University School of MedicineHangzhouZhejiangChina 不详

Despite its crucial role in interventional therapies for liver malignancy,cone-beam computed tomography(CBCT)has not yet been fully integrated into clinical practice due to several complicating factors,including nonstandardized operations and limited recognition of CBCT among interventional *** response,the chinese college of Interventionalists has released a consensus statement aimed at standardizing and promoting the application of CBCT in the interventional therapies for liver *** statement summarizes CBCT scanning techniques,and operational standards,and highlights its potential applications in clinical practice.

关键词： Cone-beam computed tomography Interventional radiology Liver malignancy Consensus statement Chemoembolization Ablation

Two-dimensional electrophoresis analysis of proteomics based on image feature and mathematical morphology

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Science china Chemistry 2005年第4期48卷 361-367页

作者： SHEN Peng1,FAN Xiaohui2.ZENG Zhen2.& CHENG Yiyu2.1.The First Affiliated Hospital,college of medicine,Zhejiang {2.,Hangzhou 310003,china 2.pharmaceutical Informatics Institute,Zhejiang {2.,Hangzhou 31002.,china 1. The First Affiliated Hospital College of Medicine Zhejiang University 310003 Hangzhou China 2. pharmaceutical Informatics Institute Zhejiang University 310027 Hangzhou China

In this paper,a novel method to automatically detect protein spots on a two-dimensional (2.D) electrophoresis gel image is proposed to implement proteomics analysis of complex *** the basis of the identifying spots results based on color variation and spot size features,morphological feature is introduced as a new criterion to distinguish protein spots from non-protein ***-sharpening,edge-detecting and morphological feature extraction methods were consequently combined to detect protein spots on a 2.D electrophoresis gel image subject to strong *** proposed method was applied to detect the protein spots of proteomic gel images from *** cell,human kidney tissue and human *** results demonstrated that this method is more accurate and reliable than previous methods such as PDQuest 7.2.and ImageMaster 5.0 software for detecting protein spots on gel images with strong interferences.

关键词： proteomics, 2.dimensional electrophoresis, protein spot recognition, analytical chemistry for life, morphological feature, image recognition.

Monte Carlo calculation method on low energy electronscattering in polybasic medium

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chinese Science Bulletin 1998年第2期43卷 171-174页

作者： TAN Zhenyu 1 and HE Yancai 2.1. college of Electric Power, Shandong university of Technology, Jinan 2.0061,{2. 2. Shanghai Institute of Ceramics, chinese Academy of Sciences, Shanghai 2.0050,{2. college of Electric Power Shandong University of Technology Jinan China Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai China

A novel Monte Carlo method of simulating low energy electron (LEE) scattering in polybasic medium is presented. The Mott cross section is adopted to describe the elastic scattering of LEE, and a mean cross section idea is proposed instead of usual determination of the scattering center. The Joy’’s modified Bethe equation is used to calculate energy loss of LEE. The scattering processes of LEE in bulk PMMA have been simulated. And the electron backscattering coefficients, the electron interaction range and energy dissipation distribution of LEE in bulk PMMA have been calculated and compared with those calculated by the method of determining scattering center.

关键词： low_energy electron scattering Monte Carlo method cross_section.

Relationship between surface subsidence factor and mining depth of strip pillar mining

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中国有色金属学会会刊：英文版 2011年第S3期21卷 594-598页

作者： GUO Wen-bing1, 2. HOU Quan-lin 1, ZOU You-feng2.1. college of Earth Science, Graduate university of {2. Academy of Sciences, Beijing 100049, china 2. School of Energy Science and Engineering, Henan Polytechnic university, Jiaozuo 454000, china chinese Acad Sci Coll Earth Sci Grad Univ Beijing 100049 Peoples R China Henan Polytech Univ Sch Energy Sci & Engn Jiaozuo 454000 Peoples R China

Strip pillar mining is one of the most important technical measures to control mining subsidence in china. Mining depth is one of the most important factors that can affect the mining subsidence in strip pillar mining. Six numerical simulation models were set up to simulate the surface subsidence of strip pillar mining in different mining depths. The mining depth in these six models ranges from 300 to 800 m. The simulated results were compared and analyzed. The formula was established based on the simulated results. It demonstrated that the subsidence of strip pillar mining method is related to mining depth. While the other conditions are the same, the subsidence of strip pillar mining increases with the increase of mining depth by logarithmic relationship.

关键词： subsidence factor strip pillar mining mining depth numerical simulation

Microcosmic analysis of ductile shearing zones of coal seams of brittle deformation domain in superficial lithosphere

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Science china Earth Sciences 2004年第5期47卷 393-404页

作者： JU Yiwen1,2. WANG Guiliang2. JIANG Bo2.& HOU Quanlin1 1. Graduate School, chinese Academy of Sciences, Beijing 100039, china 2. {2. of Mineral Resources and Geosciences, china university of Mining & Technology, Xuzhou 2.1008, china chinese Acad Sci Grad Sch Beijing 100039 Peoples R China china Univ Min & Technol Coll Mineral Resources & Geosci Xuzhou 221008 Peoples R China

The ductile shearing zones of coal seams in a brittle deformation domain in super-ficial lithosphere are put forward based on the study on bedding shearing and ductile rheology of coal seams. The macrocosmic and microcosmic characteristics include wrinkle fold, mymonitized zones and ductile planar structure of coal seams, etc., while the microcosmic characteristics may also include different optic-axis fabrics and the anisotropy of vitrinite reflectance as well as the change of chemical structure and organic geochemistry components. The forming mechanism is analyzed and the strain environment of ductile shearing zones of coal seams discussed. The result indicates that, in the superficial brittle deformation domain, the coal seams are easy to be deformed, resulting in not only brittle deformation but also ductile shearing deformation under the action of force. Because of simple shearing stress, the interlayer gliding or ductile rheology may take place between coal seams and wall rocks. Therefore, many ductile shearing zones come into being in superficial lithosphere (<5 km). The research on ductile shearing zone of brittle de-formation domain in superficial lithosphere is significant not only theoretically for the study of ductile shearing and ductile rheology of the lithosphere but also practically for the structural movement of coal seams, the formation and accumulation of coal-bed methane, and the preven-tion and harness of gas burst in coal mine.

关键词： brittle deformation domain, interlayer gliding, ductile rheology, ductile shearing zones of coal seams, coal mymonite, vitrinite reflectance anisotropy.

Quantitative detection of ING1 mRNA under different gene regulation based on molecular beacon

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chinese Science Bulletin 2006年第17期51卷 2059-2064页

作者： LIU Bin1,2.3,4, WANG Kemin1,2.3,4, XIAO Zhiqiang5,6, WANG Wei1,3,4, TAN Weihong1,2.3,4, SUN Yi5,6, TANG Hongxing1,3,4 & YANG Xiaohai1,3,41. State Key Laboratory of Chemo/Biosensing and Chemometrics, Hu- nan university, changsha 410082.{2. 2. Life Science and Biotechnology Institute, hunan university, Chang- sha 410082.{2. 3. Chemistry and Chemical Engineer college, hunan university, changsha 410082.{2. 4. hunan Engineering Research Center for Bio-Nanotechnology, hunan university, changsha 410082.{2. 5. Medical Experiment Research Center, Xiangya Hospital, Central South university, changsha 410008,{2. 6. Key Laboratory of Cancer Proteomics of chinese Ministry of Health, changsha 410008,{2. State Key Laboratory of Chemo/Biosensing and Chemometrics Hunan University Changsha China Life Science and Biotechnology Institute Hunan University Changsha China Chemistry and Chemical Engineer college Hunan University Changsha China hunan Engineering Research Center for Bio-Nanotechnology Hunan University Changsha China Medical Experiment Research Center Xiangya Hospital Central South University Changsha China Key Laboratory of Cancer Proteomics of chinese Ministry of Health Changsha China

The effects of drug treatment, gene transfection, and p53 RNA interference (RNAi) on level of ING1 mRNA in tumor cells were quantitatively detected with the help of ING1 molecular beacon (MB)/cRNA standard curve based on MB detection technology. Results showed that the level of ING1 mRNA could be upregulated by 5-FU treatment or ING1 transfection in low expression cell line of MCF-7 and be inhibited by silencing p53 with RNAi technology in normal expression cell line of CNE2. The level of ING1 varied from 7.7×10?16 to 53.4× 10?16 mol/μg total RNA of tumor cells. The results not only provided evidence for the regulation effects of gene expression but also were applied to investigat- ing the interaction of multigenes on signal transduc- tion pathway.

关键词： ING1 RT-PCR 定量分析分子信号 mRNA

Preparation of Core-shell Cu-Ag Bimetallic Powder via Electroless Coating

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Journal of Wuhan university of Technology(Materials Science) 2009年第4期24卷 637-639页

作者：徐锐 college of Metallurgy Science and Engineering Central South University college of Chemical and pharmaceutical Engineering Henan Universityof Science and Technology

A novel method of electroless silver coating on copper powders was reported, in which hydrazine was used as the reducing agent, and had some advantages such was used as inhibiting the substitution reaction and reducing consumption of copper powders. In the processes of sensitization and activation, AgNO3 replaces the conventional PdCl2. which solves the impurity of bath. Oxide film on the surface of copper powders was tested by chemical analysis. Ag element tested by XRD and XRF is in the form of Ago and exists on the surface of copper powders, which acts as catalyzer in reduction reaction. Morphology and composition of the coating were characterized by SEM and XRD respectively.

关键词： core-shell bimetallic powders electroless coating