多普勒雷达回波在高空气象探测中的应用

在常规高空气象探测中,应用多普勒雷达回波,为高空探测前期的准备、气球净举力大小的估算、各类恶劣天气下放球时间的选择,提供了可靠有力的依据,对提高高空气象探测业务质量起到了重要作用。     

分布式降雨径流物理模型的建立和应用

根据流域降雨径流的主要过程,考虑流域气象及下垫面要素的空间异质性,建立了具有物理基础的分布式降雨径流模型。模型将流域离散为栅格计算单元,并按水流特性分栅格单元为坡面单元和河网单元。在坡面单元上主要计算降雨、下渗、坡面流、壤中流等水文过程,而河网单元则主要计算河道汇流过程。模型利用空间权重插值方法将雨量站点的降雨量插值到各个计算单元,采用运动波方程来计算坡面流,将壤中流概化为垂向流和侧向流,分别用Green-Ampt公式和运动波方程来模拟,河道汇流也采用运动波方程。模型结构简单、参数的物理意义明确,大多数参数可利用DEM、土壤类型图、植被类型图直接获取,少数敏感参数通过率定确定。模型在浙江省甬江上游黄土岭流域和皎口流域进行了应用和检验,其结果令人满意。     

监控视频中目标车辆速度被动式测量方法研究

对事先没有安置测速装置,事后仅通过监控视频进行处理的目标车辆速度被动式测量的方法进行相关研究。阐述被动式目标车辆速度测量的概念、基本原理;视频画面中点、线、而之间的关系;被动式目标车辆速度测量时方向与标定点的选择;不同监控点之间目标车辆的平均速度测量和同一监控点中目标车辆速度测量的方法等。     

穴位埋线治疗脾虚湿阻型产后肥胖35 例临床观察

目的：观察穴位埋线疗法治疗脾虚湿阻型产后肥胖的临床疗效。方法：将70 例产后肥胖患者随机分成2组,每组各35 例。治疗组采用穴位埋线疗法,对照组采用针刺疗法,2组取穴相同。观察治疗前后2组患者的腰围、臀围、体质量、体质量指数（BMI）的变化,评定综合疗效。结果：总有效率治疗组为100.0%（35/35）,对照组为88.6%（31/35）,差异有统计学意义（P＜0.05）;2组治疗后体质量、BMI值、腰围均较治疗前减小,差异有统计学意义（P<0.05）,且治疗组小于对照组（P<0.05）。2组臀围治疗前后组内比较及治疗后组间比较,差异均无统计学意义（P>0.05）。结论：穴位埋线对患者的体质量、腰围、BMI的改善程度明显,可获得理想的减肥效果。     

翘嘴鲌(Culter alburnus)TMEM-57基因的克隆、组织表达和单核苷酸多态性分析

采用RT-PCR和快速扩增cDNA末端(rapid amplification of cDNA ends,RACE)技术首次克隆了翘嘴鲌TMEM-57蛋白基因的cDNA全序列,该序列全长为2822bp,其中5′-UTR区93bp,3′-UTR区731bp,开放阅读框(open reading frame,ORF)为1998bp,编码665个氨基酸。NJ法系统进化分析将同科或属中TMEM-57基因分成一个分支,表现出种属间的高度保守性。利用荧光定量PCR(qPCR)技术检测了不同组织的表达量,发现在卵巢中表达量最高,其次为心脏和脑。用直接测序法对TMEM-57基因部分区段单核苷酸多态性(SNP)进行了检测,寻找到11个新的SNP位点。     

Statistical moment-based structural damage detection method in time domain

A novel structural damage detection method with a new damage index,i.e.,the statistical moment-based damage detection(SMBDD) method in the frequency domain,has been recently proposed.The aim of this study is to extend the SMBDD method in the frequency domain to the time domain for building structures subjected to non-Gaussian and non-stationary excitations.The applicability and effectiveness of the SMBDD method in the time domainis verified both numerically and experimentally.Shear buildings with various damage scenarios are first numerically investigated in the time domain taking into account the effect of measurement noise.The applicability of the proposed method in the time domain to building structures subjected to non-Gaussian and non-stationary excitations is then experimentally investigated through a series of shaking table tests,in which two three-story shear building models with four damage scenarios aretested.The identified damage locations and severities are then compared with the preset values.The comparative results are found to be satisfactory,and the SMBDD method is shown to be feasible and effective for building structures subjected to non-Gaussian and non-stationary excitations.     

应变软化在甘肃红柳河辉长质糜棱岩形成中的作用

本文论述的辉长质糜棱岩发现于甘肃北山红柳河蛇绿岩套中。在简单说明了糜棱岩的地质背景及特征、描述了变形岩石的显微构造特征之后，重点对糜棱岩形成过程中的应变软化机制作了论述。探讨了软化岩的存在、组构调整、粒度缩小，长石的动态重结晶，水以及主导变形机制的不断调整与转化等应变软化机制，在应力作用下使岩石逐步软化过程中所起的作用，得出这种糜棱岩是在拆离剪切作用下，应力在蛇绿岩中的软化岩石辉长岩中集中，从而形     

Polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans in sediments from Hong Kong

Concentrations of 2,3,7,8-substituted polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) were determined in 14 sediment samples collected from four sites in the Mai Po Marshes Nature Reserve (within a RAMSAR Site) and from another six sites in Victoria Harbour and along the Hong Kong coastline. Elevated levels of PCDDs, and particularly OCDD, were detectable in all samples collected from the Mai Po Marshes and five of the six sites. In contrast to PCDDs, PCDFs were mainly found in sediment samples collected from industrial areas (Kwun Tong and To Kwa Wan) in Victoria Harbour. PCDD/F levels and congener profiles in the samples from the Mai Po Marshes Nature Reserve in particular show strong similarities to those reported in studies which have attributed similar elevated PCDD concentrations to nonanthropogenic PCDD sources.     

环渤海地区14个滨海城市旅游市场竞争态分析

旅游市场竞争态模型是利用旅游市场占有率和旅游市场增长率两个旅游统计指标来反映旅游市场竞争态势的一种分析方法.该模型将整个旅游市场划分为幼童市场、明星市场、金牛市场和瘦狗市场4种类型.文章对环渤海地区滨海城市入境旅游和国内旅游竞争态进行定量分析,并在此基础上提出环渤海地区滨海旅游市场发展策略,以期为该地区的旅游发展决策提供借鉴.