Microstructure and functional morphology of the Early Cambrian problematical fossil Rhombocorniculum

Rhombocorniculum cancellatum from the Lower Cambrian of southern Shaanxi Province (South China) is represented by the dextral and sinistral tooth-like sclerites (both in nearly equal numbers), indicating that the body plan of the organism with these sclerites probably was bilaterian. The main feature of the microstructure of the sclerites is the presence of longitudinally arranged, mutually contiguous hollow tubules, the shared walls consisting of microcrystalline apatite. In transverse cross sections, the sclerite wall mainly exhibits a spongy structure, with pore size decreasing adapically. Functional morphological analysis indicates that the sclerites serve as a defensive rather than a grasping function.     

Identification and mapping of quantitative trait loci controlling cold-tolerance of Chinese common wild rice (O. rufipogon Griff.) at booting to flowering stages

Cold injury is an important limitation of rice production. Therefore, screening for cold-tolerant genetic resources and the development of highly cold-tolerant cultivars is crucial for higher yield potential and stable yield of rice. There have been several reports on the genetic analysis and QTL mapping of the cold-tolerance at the booting stage. Toriyama et al.[1,2] and Futsuhara et al.[3,4] reported that 4 or more genes were involved in the cold-tolerance. Several QTLs at the booting sta…     

双孢蘑菇酵母菌病害药剂试验

假丝酵母菌(Candida sp．)、酵母菌(Saccharomyces sp．)是稻田栽培双孢蘑菇(Agaricus bisporus)中的一类新病原菌。描述了病原菌的形态特征、致病症状，作了实验室药敏试验。试验表明：克霉灵、灭菌威、甲醛等药剂可有效杀灭病原菌。     

一种基于偏微分方程的形态学边缘检测新方法

提出一种基于偏微分方程(PDE)的形态学腐蚀算子．在边缘检测中，直接对原图像求取一阶差分，利用该形态学腐蚀算子增强边缘梯度、降低噪声的影响，突破了传统的先低通滤波后计算梯度的边缘检测思路．形态学运算不会带来边缘位置的偏移，因此能够对图像的边缘准确定位，同时具有抗噪性．将新方法的边缘检测性能和Canny算子、Log算子做了比较，结果表明提出的边缘定位方法更加准确，具有更好的抗噪性能．     

大鵟消化系统的形态学研究

本对大鵟消化系统的形态学结构特点作了观察，结果表明，大鵟的喙锋利，食管粗大且收缩性较大，嗉囊较发达，肌胃不太发达，仅具单侧盲肠，相对体长而言肠管较短，但小肠较发达．这些结构都与其肉食性生活相适应．     

基于三角模的模糊形态学截集兼容性研究

回顾了数学形态学的发展，尤其是将二值形态学从二值图像扩展到灰度图像的模糊形态学方法的相关概念．并给出了一种基于三角范逻辑的模糊形态学定义，对它的主要操作作了α-截集兼容性分析．结果表明采用合适的三角模和反三角模算子，可以使由对应的二值形态学算子导出的模糊形态学算子有很好的特征匹配性．     

数学形态学边缘检测法及其对棉麻自动识别的应用

本文运用数学形态学方法提取棉麻纤维纵向投影图的边缘,然后按作者定义的形态特征参数外切矩形充满度对棉、麻纤维进行自动识别与分类,并计算出相应的混纺比。测试结果显示,本文的方法可达到较高的精度。     

初孵扬子鳄胃粘膜表面及胃腺的形态

本文观察发初孵扬子锷胃粘膜表面及胃腺的形态，在扫描电镜下观察到，胃贲门具１１－１３个贲门瓣，贲门区及幽门及粘膜上皮凹稀而浅，胃体冲皮凹陷密而深，排列很规则。     

环氧棉籽油－醋酸－水三元系液－液相平衡的测定

测定了环氧棉籽油－醋酸－水三元系分别在３０℃，４０℃，５０℃，６０℃下的液－液平衡双结点曲线，以及在４０℃，５０℃，６０℃下的液－液平衡系线数据；分别应用物料衡算法和系线中点轨迹法对实验数据进行了检验．结果表明，在醋酸质量分数低于３０％的配样条件下所测定的液－液平衡数据具有较好的热力学一致性．