重庆地区色叶植物资源及其在园林中的应用

色叶植物是未来园林应用的主要造景植物之一，本文就重庆地区色叶植物资源作了详细调查．按植物色彩分成常色叶类、春色叶类、秋色叶类和两季色类，并对其在园林中的应用途径和前景作了详尽介绍．     

The application of atomic force microscope in clinic diagnosis of erythrocytes

AIM: To investigate the application of atomic force microscope (AFM) in clinic diagnosis. METHODS: Topographic images and some parameters of large range field and microstructures of erythrocytes in the blood of normal subjects, lung cancer and myelodisplastic syndrome (MDS) patients were examined by atomic force microscope. RESULTS: Many clear topographic images of many erythrocytes, single erythrocyte, and microstructure of erythrocyte membrane surface were obtained. Many erythrocytes in lung cancer patients were found to change into echinocytes. One erythrocyte had 10-20 protuberances, most of which, with a mean width of 589. 0 nm and a length of 646. 7 nm, were on the edge of cells. The protuberances on the center of echinocytes are lodged and embedded. The erythrocytes of MDS patients were biconcave in shape. Many apertures with different diameters of tens to hundreds nanometer appeared on the surface of cell membrane. CONCLUSIONS: AFM can be widely applied in clinic pathological inspection, including quantification of cells, obtainment and comparison of many parameters (such as diameter, thickness, volume, surface, surface area/volume ratio), observation of topograph of single cell, and observation and comparison of membrane surface microstructure of cells, and so on.     

灌溉试验站的总体规划和观测方法

随着农业产业结构调整的不断深入，传统的灌溉方式已不相适应。为了实现农业用水的高效利用,必须要有科学的灌溉试验成果作依据，做好灌溉试验站的规划建设和观测工作，为真正实现农业用水“总量控制、定额管理”奠定基础。     

桃果皮毛长度性状的评价及其与几个主要农艺性状的关系

选择6份不同类型的桃种质,测定其果实发育期果皮毛长度的变化,评价238份桃种质成熟期果实表皮毛长度,探讨其与其他几个主要农艺性状的关系。结果表明,在花后30 d时,果皮毛长度急剧下降,最后呈缓慢下降趋势直至果实成熟。果实成熟期,供试材料果皮毛长度分布在106.3～343.3μm间,平均值为193.9μm,果皮毛最短的种质为‘霞晖2号’,最长的为‘白芒蟠桃’。此外,不同果形、粘/离核、果实成熟期和地理类群种质的果皮毛长度间有明显差异,其中果形可能与果皮毛发育有一定的内在联系。     

6种番茄叶表皮制片方法比较

结合番茄叶片结构特点,采用6种表皮制片技术对番茄叶片下表皮进行装片,并对不同方法的制片过程和观察效果进行比较研究.结果表明,番茄叶片薄,表皮为单层细胞,其上着生有丰富表皮毛,下表皮与疏松的海绵组织相邻;表皮撕取法和透明胶带粘取法可以真实地观测气孔大小、密度等静态性状指标和气孔开度等动态行为;因番茄叶柔软,刮片法对操作要...     

一次春季冰雹天气的中尺度系统分析

对2007年5月5日江苏出现的大范围雷雨、大风和区域性冰雹天气的环流背景场进行了分析,结果表明：这次强对流天气是由北方南下的冷空气触发所致,锋前对流层低层的增温和500hPa冷空气的先行南下使潜在的对流不稳定性加剧;地面冷锋前中尺度低压的发展是对流性天气发展的主要因素;强烈的上升运动和低层水汽通量辐合提供了有利于冰雹产生的过冷水滴的碰撞增长条件;冰雹天气的产生与地面物理量场有很好的配置关系。     

迁站观测资料影响程度分析

利用山东省冠县气象站和莘县气象站1959～2009年的气压、气温、相对湿度、降水、风速、地面温度、日照观测记录,采用对比差值及趋势系数法,对搬迁站冠县站与邻站莘县站主要气象要素进行连续性差异分析。结果表明,1981以来冠县站探测环境受到城市化影响,使得主要气象要素较莘县站表现为气压偏低、气温偏高、相对湿度偏小、风速偏小、降水量偏多、地面温度偏高、日照时数偏少。     

An experimental study of hypercholesterolemia-induced disorder of Oddi's sphincter

AIM:To investigate the functional changes and histopathological basis of Oddi’s sphincter under hypercholesterolemia. METHODS:Twenty - four New Zealand rabbits were equally divided into be groups ran- domly. Experimental groups Ⅰ and Ⅱ fed with cholesterol - added forage for 4 and 8 weeks respectively before sacri- ficed. Images, functions and histopathological characteristics of Oddi’s sphincters of experimental groups were studied and compared with control group by cholangiography, catheter manometry, and quantitative analysis of nitric oxide synthase. RESULTS: The hasal pressures of proximal low - pressure segment of Oddi’s sphincter of hath experimen- tal groups Ⅰand Ⅱ (20.9±6.1 mmHg, 25 .6±9.1 mmHg, respectively) were higher than those of control group sig- nificantly (11.7±2.8 mmHg, P < 0.01, P < 0.01 ). The hasal pressures of distal high - pressure "valve" segment of both experimental pops (138 .4±45. 5 mmHg and 144. 5 ±40 .4 mmHg, respectively) were significantly higher than those of coned group (69.3±9.8 mmHg, P < 0.01 and P<0.01). The gallbladder volUmes of experimental group Ⅰ and Ⅱ (3.4±1.0 mL and 3.9±1.9 mL) were significantly larger than those of control group (2.0 ±1.9 mL, P < 0.05 and P < 0.01 ). Between groups there were no significant differences in nitric oxide synthase con- tents. Enlargement of the cell volume, wavy distortion of the cell membrane, loosening and disarrangement of myofila- ment, uneven in size and distribution of dense body, angulation of longitudinal axis between dense body and myofila- ment, swelling, congregated at one end of nucleoulus and disappearance of cristae of plasmosomes and concertration of chromosome at nucleolus margin were observed in experimental groups under electron-microscope. CONCLUSION: The diastole function of Oddi’s sphincter could be damaged by hyperecholesterolemia, inducing a functional disorder of Oddi’s sphincter with increased resistance in bile excretion. The result is retertion of bile in the gallbladder.     

国际杂交稻观察圃优异资源的初步评价

对国际水稻研究所提供的 70个优异水稻品种 (组合 )进行了适应性种植试验 ,对其中表现较好的 3 7份材料的主要农艺性状作了初步评价     

采用Fluo-3 AM-ester探针研究桃不同组织的Ca^2＋信号分布

钙作为植物最重要的矿质元素之一,在植物生理和生化活动中起重要作用。采用激光扫描共聚焦显微镜,以Fluo-3 AM-ester为荧光探针研究了桃果肉和叶柄组织中Ca2＋的分布,结果表明Fluo-3 AM-ester可作为荧光探针对桃不同组织中游离的Ca2＋信号强度和分布特征进行分析。不同的物镜观察（10×和20×）下,C...