滁菊对淹水胁迫的形态及生理响应     

连洪燕  王雪娟  岳彩云  王阳  胡辉 《重庆师专学报》2013,(5):85-88

为研究滁菊对淹水胁迫的响应进行本实验.选取滁菊进行淹水处理,观察其外观形态变化,测定了淹水期间滁菊的各项生理指标变化.结果表明：随淹水时间的延长,滁菊叶片逐渐萎蔫发黄、干枯,最后出现植株死亡现象.电导率、可溶性糖含量、脯氨酸含量呈现先上升后下降的趋势且基本高于对照值,叶绿素整体呈现下降趋势且低于对照,变化程度反映了滁菊受淹水胁迫的伤害程度.  相似文献   

Skeleton Changes Induced by Horse Riding on Medieval Skeletal Remains from Croatia     

Š. Anđelinović  I. Anterić  E. Škorić  Ž. Bašić 《国际体育史杂志》2013,30(5):708-721

Skeletal remains of 35 individuals from the Croatian excavation site Kamen Most – Kaldrma from the fourteenth to fifteenth centuries were analyzed anthropologically. Due to specific skeletal characteristics, eight of them were analyzed in great detail in this study. The results of additional analysis indicated that all bone elements, except pelves, of all eight persons belonged to males. All pelvic girdle have characteristics of female sex and pronounced muscle attachments that are both indicative of horse riding. All eight persons had at least two of six changes on femora indicative of horse riding. Vertebrae of seven persons (one person did not have preserved vertebrae) have Schmorl's nodes. Signs of advanced osteoarthritis were found on all joints in all eight persons. All of them also have visible signs of periostitis especially on lower extremities. Pathological signs of trauma were found in five persons. Two of them had skull fractures and the rest had fractures of extremities which are also characteristic for horse riders. The average age of all eight persons was above 45 years at death. DNA analysis confirmed male sex for seven individuals. The results were additionally confirmed by later archeological findings of tombstones with illustrations of horse riders.  相似文献   

《论语》复音词相关问题     

张欢 《唐山师范学院学报》2013,(1):20-24,70

通过整理《论语》中的复音词,以此为基础进行分类、研究,说明判断复音词的方法,主要考察复音词词义的来源和过程中发现的问题,以及复音词的内部结构。  相似文献   

三维人体扫描技术在身体形态测量中的应用     

任弘  王馨塘  吴晓薇  程静 《北京体育大学学报》2013,36(1):51-54

三维人体扫描与传统的身体形态测量方法相比,具有速度快、测试指标多、没有身体接触等优点,而测试精度则受解读三维图像的程序限制,目前该技术在体育领域的应用刚刚开始。使用德国Human Solutions公司生产的Anthroscan 3D VITUS三维人体扫描仪,对174人(男74人,女100人)的29项形态指标进行传统手工测量与三维扫描测量,对比两种测量方法的结果,有14项指标结果较为一致,误差小于3%。髂宽、胸宽和胸厚3项指标两种测量方法的差异率在10%以上,其余指标误差在3%～10%之间。两种测量方法中受试对象姿势不同、定位点不一致是造成误差的主要原因。结果提示研究人员在进行人体形态测量时应统一测试方法,不能将两种测量方法得到的测试结果相互替代进行研究。  相似文献   

金纳米粒子的制备方法     

冷玉敏  马春华  姬晓旭  何俊宝  马奔原 《南阳师范学院学报》2013,(12):20-24

金纳米粒子(AuNPs),其直径在1¹00 nm范围内,具有很好的稳定性、灵敏的光学特性、易进行表面修饰以及良好的生物相容性.本文重点介绍了AuNPs的制备发展过程、制备方法、形貌和应用前景.  相似文献   

Establishment of reference mandibular plane for anterior alveolar morphology evaluation using cone beam computed tomography     

Rong-yang Wang  Min Han  Hong Liu  Chun-ling Wang  Hong-hong Xian  Lei Zhang  Shi-jie Zhang  Dong-xu Liu 《Journal of Zhejiang University. Science. B》2012,13(11):942-947

To propose a method of establishing the reference mandibular plane (MP), which could be reestablished according to the coordinates of the reference points, and then facilitate the assessment of anterior alveolar morphology using cone beam computed tomography (CBCT), sixty patients with bimaxillary protrusion were randomly selected and CBCT scans were taken. The CBCT scans were transferred to Materialism’s interactive medical image control system 10.01 (MIMICS 10.01), and three dimensional models of the entire jaws were constructed. Reference points determining the reference MP were positioned in the coronal, axial, sagittal windows, and the points were exactly located by recording their coordinates in the interfaces of software. The reference MP provided high intra-observer reliability (Pearson’s r 0.992 to 0.999), and inter-observer reliability (intra-class correlation coefficients (ICCs) 0.996 to 0.999).  相似文献   

气液法制备文石型碳酸钙晶须及影响条件研究     

许肖云  梁兵  陈丽萍  张凯  唐红军  王洁  覃钦晏 《内江师范学院学报》2012,27(6):37-41

研究了在MgCl2-Ca（OH）2--CO2体系中,气液法制备碳酸钙晶须的形貌和影响条件．结果显示,在此条件下制备的是具有较好形貌和高长径比,且分布均一的文石型碳酸钙晶须,并利用扫描电镜（SEM）、X-射线粉末衍射（PXRD）和傅里叶转换红外（FT—IR）光谱图等手段对其进行了表征．其最佳制备工艺为：反应温度为80℃,CO2的流量为5mL／min,搅拌速度为250r／min,MgCl2溶液浓度为0．4mol／L．  相似文献   

An image registration method based on multi-resolution morphology contour detection     

PENG Xiang-qian  ZHANG Dai-lin  CHEN You-pin  XIE Jing-ming 《重庆大学学报(英文版)》2012,11(2):88-96

Combined with the printing application, an image registration method based on the multi-resolution morphology contour detection was proposed. First, a direction based multi-resolution gray morphology in the scheme was proposed to realize the contour extraction. Then, based on the contour features, the subspace image registration was proposed to deal with issues of the computing complexity appeared in the traditional image registration methods. The proposed image registration was efficiently applied in the defect inspection of printing images.  相似文献   

基于多尺度数学形态学梯度的图像检测     

梁英波  张利红 《周口师范学院学报》2012,29(5):60-62

传统边缘检测算子如Canny、Sobel等是通过计算图像中局部小区域的差分来工作的,对噪声比较敏感,在检测边缘的同时常会加强噪声,形态边缘检测器在检测边缘的时候不会加强或放大噪声,单尺度形态学梯度算子结构元素过大或过小都不能检测到满意的结果.将多尺度形态学边缘检测和形态学滤波结合起来,提出一种边缘检测方法.首先利用形态学对多尺度的形态学梯度算子进行边缘检测,再进行填充内部缝隙,接着进行形态学边界平滑,最后通过分割掩模到原图像的结果.仿真结果表明,所提算法能够非常清晰地检测到目标图像的边缘,提取的图像边缘定位准确且平滑,同时具有较强的抗噪能力.  相似文献   

“空间基核”视角下的传统村落形态更新研究——以福建省琴江村为例     

张建 《福建工程学院学报》2012,(1):76-80

复杂系统自组织理论给传统村落形态更新提供了一种深层次的研究视角。文章引入"基核"的作用机制,探讨"空间基核"的概念、特征和应用,并以福建省琴江村落形态更新为例,探索传统村落形态更新的适宜之路。  相似文献