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与冬季北太平洋大范围海温异常相联系的海气特征

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大气科学学报 2018年第3期41卷 330-343页

作者：徐海明崔梦雪南京信息工程大学气象灾害预报预警与评估协同创新中心/气象灾害教育部重点实验室/气候与环境变化国际合作联合实验室江苏南京210044 南京信息工程大学大气科学学院江苏南京210044 湖北省宜昌市气象局湖北宜昌443000

采用1948—2.14年NCEP/NCAR大气再分析资料以及延伸重建海温资料,基于大气海洋间不同的主导关系对冬季北太平洋大范围海温异常进行分类,探究其相应的海气结构特征。结果表明:1)大气影响海洋的个例多于海洋影响大气的个例,即在冬季北太... 详细信息

采用1948—2.14年NCEP/NCAR大气再分析资料以及延伸重建海温资料,基于大气海洋间不同的主导关系对冬季北太平洋大范围海温异常进行分类,探究其相应的海气结构特征。结果表明:1)大气影响海洋的个例多于海洋影响大气的个例,即在冬季北太平洋大气强迫海洋占主要地位,但也存在海洋对大气的反馈作用。2.对于大气影响海洋而言,SST(Sea Surface Temperature)暖异常区上空主要伴随着东北—西南走向的相当正压高低压异常(东北高西南低),对应东南风异常以及显著的深厚暖异常,表现出相当正压暖/脊结构,冷异常情况与此相反。SST异常为净热通量异常与风速异常共同作用引起。3.对于海洋影响大气而言,在SST暖异常区上空西部为南北向高低压异常(北高南低),东部为低压异常,对应偏东风异常。在SST冷异常区上空为偶极型的南北向高低压异常(南高北低),对应偏西风异常;位势高度异常表现出相当正压结构且较大气影响海洋时相对偏弱,大气暖(冷)温度异常比较浅薄且主要局限于对流层低层。4)海洋温度结构异常主要表现为,在大气影响海洋时海温异常由表层下传,海洋影响大气时为上下一致的温度异常。

关键词：大范围海温异常中纬度北太平洋大气海洋特征冬季

Cloud microphysical and rainfall responses to zonal perturbations of sea surface temperature:A cloud-resolving modeling study

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Progress in Natural Science:Materials International 2009年第5期19卷 587-594页

作者： Xiaopeng Cuia, Xiaofan Lib, Zhiping Zongc a Laboratory of Cloud-Precipitation Physics and Severe Storms (LACS), Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 10002., china b Joint center for Satellite Data Assimilation and NOAA/NESDIS/Office of Research and Applications, Camp Springs, MD, USA c National Meteorological center, china Meteorological Administration, Beijing 100081, china Laboratory of Cloud-Precipitation Physics and Severe Storms (LACS) Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100029 China Joint center for Satellite Data Assimilation and NOAA/NESDIS/Office of Research and Applications Camp Springs MD USA National Meteorological center China Meteorological Administration Beijing 100081 China

The cloud microphysical and rainfall responses to zonal perturbations of sea surface temperature (SST) are investigated by analyzing the equilibrium simulation data (from day 3.-40) obtained from a series of two-dimensional cloud-resolving simulations with a zonal model domain of 768 km. Four experiments imposed by zonal SST perturbations of wavenumbers 1 (SST2.Z1), 2.(SST2.Z2., 4 (SST2.Z4), and 8 (SST2.Z8) are compared to the control experiment imposed by zonally uniform SST (SST2.). The model domain mean SST is 2. °C, and the two-dimensional cloud-resolving model with a cyclic lateral boundary is also imposed by zero vertical velocity and constant zonal wind. The time and model domain mean surface rain rates in SST2.Z1, SST2.Z2. and SST2.Z8 are about 10% larger than those in SST2., whereas the mean surface rain rates in SST2.Z4 and SST2. are similar. The analysis of mean surface rainfall budgets shows that local water vapor and hydrometeor changes play important roles in determining the differences and similarities in mean surface rain rate between the perturbation experiments and the control experiment. Both convective and stratiform rain rates are larger in SST2.Z1 and SST2.Z2.than in SST2. due to the smaller advection of rain from convective regions into raining stratiform regions and the larger vapor condensation rates associated with the larger water vapor convergence over raining stratiform regions in SST2.Z1 and SST2.Z2. The convective rain rates are larger in SST2.Z4 and SST2.Z8 than in SST2. because of the larger condensation rates associated with the larger water vapor convergence over convective regions in SST2.Z4 and SST2.Z8. The stratiform rain rates in SST2.Z4 and SST2.Z8 are smaller than in SST2. due to the smaller vapor condensation rates and smaller collection rates of cloud water by rain over raining stratiform regions in SST2.Z4 and SST2.Z8.

关键词： Cloud microphysical and rainfall responses Sea surface temperature Zonal perturbation Cloud-resolving modeling study

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基于基准面全局电场的外翻快速算法

系统仿真学报 2009年第23期21卷 7515-7517页

作者：黄翊玲赵俊曹立基上海交通大学生命科学与技术学院生物医学工程系上海200240 德国癌症研究中心海德堡德国69118

虚拟外翻是可视化领域的一项新近提出的方法,用以直观地提供空腔内壁表面的信息,该方法的最大优点在于保持了空腔原有的空间和解剖学结构特点,同时避免了乏味而耗时的漫游。研究围绕虚拟外翻展开,对电场模型进行了改进,提出全局电场的概... 详细信息

虚拟外翻是可视化领域的一项新近提出的方法,用以直观地提供空腔内壁表面的信息,该方法的最大优点在于保持了空腔原有的空间和解剖学结构特点,同时避免了乏味而耗时的漫游。研究围绕虚拟外翻展开,对电场模型进行了改进,提出全局电场的概念,从根本避免了欠采样和过采样的出现。同时,引入向量场分布快速算法,借助快速傅立叶变换的高效性以实现全局电场的设想,使其更具应用与推广的潜力。通过对真实病人的结肠CT数据进行实验,验证了方法的准确和高效。

关键词：可视化虚拟外翻全局电场快速傅立叶变换

Performance Analysis of BeiDou Satellite Navigation System （4IGSO+3.EO） in Standard Positioning and Navigation

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Performance Analysis of BeiDou Satellite Navigation System ...

Research on a Distribution center Location Model Based on a Particle Swarm Optimization Algorithm

第三届中国卫星导航学术年会

作者： Gao zhouzheng1,3.Zhang Hongping1,2.Hu Zhigang1,Pengjunhuan3.1.GNSS Research {2.,Wuhan University,Wuhan 43.079 2.State Key Laboratory of Information Engineering in Surveying,Mapping and Remote Sensing,Wuhan University,Wuhan 43.079 3.Land Science Department china University of Geosciences,Beijing 100083

Currently,BeiDou satellite navigation system can be used for real-time positioning and navigation with 4IGSO+3.EO satellites in the *** paper first briefly introduces some new progresses of BeiDou *** the distribution of BeiDou’s DOP value over the Pacific-Asia area is given according to current BeiDou Satellite’s *** evaluate and find bad satellite’s performance in running,we provide a simple way to detect BeiDou satellite’s abnormality by using continuous static observation *** processing 15 days’data obtained from several static stations and some dynamic observations collected in the field,we evaluate the accuracy of current BeiDou System’s positioning and *** results show that the horizon positioning accuracy is better than 2. meters while the vertical accuracy is better than 3. meter,the velocity accuracy is better than 0.4 meter/second.

关键词： BeiDou Satellite Navigation System Single Point Positioning GPS Precise Point Positioning Navigation Accuracy

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International Journal of Plant Engineering and Management 2009年第3期14卷 151-157页

作者： WANG Fei 1,2.HU Xin-bu3.JIA Tao41 School of Economy and Management,Chang’an University,Xi’an 710064,P.R.china 2.Institute of Human Geography,Xi’an International Studies University,Xi’an 710061,P.R.china 3.Architecture Engineering Department,Engineering College of Armed Police Forces,Xi’an 710086,P.R.china 4 School of Management,Xi’an Jiaotong University,Xi’an 710069,P.R.china School of Economy and Management Chang'an UniversityXi'an 710064P.R.China Institute of Human Geography Xi'an International Studies UniversityXi'an 710061P.R.China Architecture Engineering Department Engineering College of Armed Police ForcesXi'an 710086P.R.China School of Management Xi'an Jiaotong UniversityXi'an 710069P.R.China

Logistics is supposed to be the important source of profits for the enterprises besides reducing material consumption and improving labor productivity. Transportation costs, distribution center construction costs, ordering costs, safe inventory costs and inventory holding costs are the important parts of the total logistics costs. In this paper, based on the research results of LMRP（ location model of risk pooling） location with fixed construction cost, the LMRPVCC （ location model of risk pooling based on variable construction cost） will be introduced. Applying particle swarm optimization to several computational instances, the authors find the suboptimum solution of the model.

关键词： location-inventory particle swarm optimization algorithm variable cost of construction

黄伞多糖的提取及对小鼠腹腔巨噬细胞的激活效应研究

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泰山医学院学报 2004年第1期25卷 9-11页

作者：苏延友康莉杨志孝刘爱华泰山医学院山东泰安271000 泰安市中心医院山东泰安271000

目的　探讨黄伞多糖的提取方法及对小鼠腹腔巨噬细胞的激活作用。方法　采用水提醇沉的方法提取黄伞多糖 ,体外诱导培养小鼠腹腔巨噬细胞。用ELISA法检测培养上清中的细胞因子 ,Griess试剂检测其NO的含量 ;FACS检测巨噬细胞吞噬功能 ;MT... 详细信息

目的　探讨黄伞多糖的提取方法及对小鼠腹腔巨噬细胞的激活作用。方法　采用水提醇沉的方法提取黄伞多糖 ,体外诱导培养小鼠腹腔巨噬细胞。用ELISA法检测培养上清中的细胞因子 ,Griess试剂检测其NO的含量 ;FACS检测巨噬细胞吞噬功能 ;MTT间接法观察巨噬细胞体外杀伤活性的变化。结果　黄伞多糖组巨噬细胞产生IL 1β及NO的水平明显高于PBS对照组 ,黄伞多糖组巨噬细胞吞噬功能、杀伤活性明显高于PBS对照组 ,两组间各项指标比较均有显著性差异 (均 P <0 0 5 )。结论　黄伞多糖能激活小鼠巨噬细胞 ,可增强巨噬细胞IL 1β及NO产生的水平 ,增强其吞噬功能及体外杀伤活性。

关键词：黄伞多糖巨噬细胞免疫增强剂

Diallyl trisulfide activates NADPH oxidase by inducing the expression of NADPH oxidase subunits and translocation of both Rac2.and p67phox subunit in HL-60 cells

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沈阳药科大学学报 2008年第S1期25卷 85-85页

作者： ZHANG Meng-xia2.TIAN Zhi-zhen1,TU Jian1,ZHANG Xiao-hong2.LEI Xiao-yong1,TANG Sheng-song1,2.1.Institute of Pharmacy and Pharmacology,University of South china,Hengyang 42.001,china 2.{2. for Life Sciences,University of South china,Hengyang 42.001,china)

Objective To explore the effect and mechanism of diallyl trisulfide on the activity of NADPH oxidase in Hl-60 *** HL-60 cells were treated with DATS at a indicated concentration for 0,1,3.6,12.hours,*** activity of NADPH oxidase was measured by the reduction of the yellow dye nitroblue tetrazolium(NBT).The mRNA expression of NADPH oxidase subunits,including gp91phox,p47 phox,p2. phox,Rac2.and Rac1,was detected by *** protein expression of p67 phox,gp91 phox and Rac2.was analyzed by Western *** cell membrane fractions were prepared according to the instruction of Mem-PER kit from Pierce *** The results showed that reduction ability of HL-60 cells for NBT markedly increased in a concentration-dependent manner following DATS incubation for 3.and 6 hours(P3.hours have a maximal reduction effect for *** results from RT-PCR indicated that mRNA expression of NADPH oxidase subunits,including p47phox,gp91 phox,p2. phox,Rac2.and Rac1,significantly increased in a concentration-dependent manner in HL-60 cells treated by *** results from western blot showed that HL-60 cells following DATS incubation have a higher level expression of Rac2.and gp91phox,compared with untreated-HL-60 *** results also indicated that a maximal expression level of p47phox,gp91 phox,p2. phox,Rac2.and Rac1in HL-60 cells is present at 3.hours following DATS *** found that levels of both Rac2.and p67phox was reduced in the cytosolic fraction and meanwhile increased in the membrane fraction following HL-60 exposed to DATS,Which is dependent on the concentration and time of DATS ***,the level of both Rac2.and p67phox located to the plasma membrane translocation was maximized following 150 μM of DATS incubation for 3.*** DATS induce the activation of NADPH oxidase by both up-regulating the expression of NADPH oxidase subunit and translocating

关键词： diallyl trisulfide leukemia cell line NADPH oxidase

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GNSS接收机环路跟踪算法设计及验证

武汉理工大学学报 2009年第11期31卷 122-125页

作者：刘建黎雨露贺智轶谢涛武汉理工大学信息工程学院武汉430070 中国交通通信中心北京100011

GNSS信号的跟踪需要2.跟踪环路,一个用来跟踪载波频率的载波跟踪环,另一个是跟踪码的码跟踪环。详细介绍了2.跟踪环路的联合算法,并利用Matlab在一组实测的GPS数据下完成该跟踪算法仿真及验证。试验证明,使用该算法运算量小,可以快速... 详细信息

GNSS信号的跟踪需要2.跟踪环路,一个用来跟踪载波频率的载波跟踪环,另一个是跟踪码的码跟踪环。详细介绍了2.跟踪环路的联合算法,并利用Matlab在一组实测的GPS数据下完成该跟踪算法仿真及验证。试验证明,使用该算法运算量小,可以快速稳定的完成信号的跟踪,环路具有较好的动态性能和抗噪性能,有效地提高了接收机的性能。

关键词： RNSS 码跟踪环路载波跟踪环路

Preparation of TiC/Ni_3.l Composites by Upward Melt Infiltration

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Journal of Materials Science & Technology 2000年第4期16卷 387-392页

作者： Yi PAN (Department of Materials Science and Engineering, Zhejiang University, Hangzhou 3.002., china) Kewei SUN (National Engineering Research {2. of Solid Waste Resources Recovery, Kunming University of Science and Technology,Kunming 650093. china) Department of Materials Science and Engineering Zhejiang University Hangzhou 310027 China National Engineering Research center of Solid Waste Resources Recovery Kunming University of Science and Technology Kunming 650093 China

TiC/Ni_3.l composites have been prepared using upward infiltration method. The densification was performed by both Ni_3.l melt filling and TiC sintering during the infiltration. The dissolution of TiC in liquid Ni_3.l has been evidenced by finding Ni_3.Al,Ti)C after fast cooling in the TiC/Ni_3.l composites. The dissolution may be responsible for the infiltration and sintering. Compared with downward infiltration, the upward infiltration brought about higher strength and fracture toughness and shorter infiltration time. TiC/2. vol. pct Ni_3.l composite processed by upward infiltration had a flexural strength of 1476 MPa with a statistic Weibull modulus of 2..2.and a fracture toughness of 2..4 MPa . Better mechanical properties may be attributed to melt unidirectional movement in upward infiltration.

关键词： TiC Preparation of TiC/Ni3.l Composites by Upward Melt Infiltration Ni Al