蜗杆式振动珩齿珩磨啮合纹路研究

研究和分析了蜗杆式振动珩齿时,被珩齿轮齿面上的珩磨啮合轨迹,以及在不同珩磨运动参数下,齿面上珩磨啮合纹路的形式。     

莲子叶蛋白体的类型,来源与发育

莲子叶于发育的１０￣２８ｄ,以不同速率在叶肉细胞中大量积累贮存蛋白,并以不同方式组装许多形态各异、结构不同的蛋白体。按其来源与发育的特点可分４种类型：①粗面球状蛋白体;②光面球状蛋白体;③杯状蛋白体;④淀粉蛋白体。发育顺序是①,②类先形成,③,④类后发生;②类的发育贯穿整个贮存蛋白的积累期,比较了莲与其他植物蛋白体的异同。     

流动显示技术及其在温排放模型试验中的应用

简介了作者的流动显示方法（包括应用塑料示踪剂、间隙曝光装置、定时控制器和普通照相机来拍摄水工整体试验中大范围流动的照片（流谱图））;并利用微机图形处理系统,对实拍流谱图进行图／数处理（包括光学修正、网格插补等预处理和信息处理）,从中识别出流体物理参数及其等值线分布图（包括流速场、流函数场和涡度场等）。作为实例,介绍了应用本流动显示技术和方法,在某电厂温排水整体试验中获得取排水口近区流场定量信息的情     

模式识别在测井相分析中的应用

在测井相分析过程中,提取了与岩相有关的测井响应特征,进行了模糊聚类分析,形成其测井相模式。该模式通过岩－电关系库,应用模式识别技术,实现向岩相的转化,形成岩性的系统剖面。     

分析小孔成像的新思路

就太阳光经小孔成像问题,引入像素概念．用平面几何作图的方法,讨论不同形状、不同大小的孔径对成像亮度分布、边缘模糊和失真的影响．     

Synthesis and characterization of hollandite-type material intended for the specific containment of radioactive cesium

The hollandite Ba₁Cs_0.28Fe_0.82Al_1.46Ti_5.72O₁₆, which has been proposed for the cesium-specific conditioning, can be synthesized either by an alcoxyde or a dry route. In both cases, a two-step protocol is applied, i.e., a calcination at 1000 °C followed by a sintering at 1200 °C. After sintering, both synthetic processes lead to a tetragonal form. According to the X-ray diffraction (XRD) patterns collected at the barium and the cesium K absorption edges, the different positions of these two elements have been evidenced with a more centered position in the oxygen cubic site of the tunnel for Ba than for Cs. On the contrary, after calcination, the two synthetic routes yield different products. The alcoxyde route gives rise to a mixture of the aforementioned Cs- and Ba-containing tetragonal I4/m hollandite, a Cs-only-containing monoclinic I2/m hollandite and an unidentified phase with a weak coherence length containing only Ba. The dry route yields a single tetragonal hollandite material containing Ba and Cs slightly different in composition from the targeted compound.     

Drying dissipative patterns of colloidal crystals of silica spheres in organic solvents

Drying dissipative structural patterns formed in the course of drying colloidal crystals of silica spheres (110 nm in diameter) in water, methyl alcohol, ethyl alcohol, 1-propyl alcohol, diethyl ether, and in the mixtures of ethyl alcohol with the other solvents above have been studied on a cover glass. The macroscopic broad rings were formed in the outside edges of the dried film for all the solvents examined. Furthermore, much distinct broad rings appeared in the inner area when the solvents were ethyl alcohol, methyl alcohol, and their mixtures. Profiles of the thickness of the dried films were sensitive to the organic solvents and explained well with changes in the surface tensions, boiling points, and viscosities of the solvents. The macroscopic and microscopic spoke-like crack patterns formed. The drying area (or the drying time) increased (or decreased) as the surface tension of the solvent decreased. However, the absolute values of these drying parameters are determined also by the boiling points of the solvents. Importance of the fundamental properties of the solvents is supported in addition to the characteristics of colloidal particles in the drying dissipative pattern formation.     

计算机模式识别法对甲状腺机能亢进症微量元素谱的研究

据Mahlanobis距离判别法，利用计算机多元统计判别程序，对14例甲亢思者和21例健康人的血清中锌、铁、铜、锰、镁和锶等元素浓度差异进行分类判别研究。选择锌、铁、钙、锶作判别特征参量时，患者和健康人的分类准确率为100％，服碘前与服碘后的甲亢患者分类准确率为92.7％，分类研究指出，甲亢患者血清中的铁和锶浓度高于健康人，经服碘治疗后，患者血清中上述元素浓度降低与健康人相近。     

聚合物微晶尺寸和晶格畸变

聚合物微晶尺寸和晶格畸变是对聚合物材料性能有着重要影响的结构参数。本文介绍了应用Ｘ射线衍射方法测定聚合物微晶尺寸和结构畸变的几种方法：近似函数、次晶模型法、方差法、矩法。     

Structural Dependence of Magnetic and Transport Properties in Doped Manganite Perovskites

1 INTRODUCTION In recent years, ABO3-type perovskite-like manganites, RE1xDxMnO3 (RE = rare earth ions, D = Ca2+, Sr2+, Ba2+ etc.), have inspired remarkable attention due to the colossal magnetoresistance (CMR) effects for fundamental and practical consideration [1, 2]. Since A- and B-site substitution can give rise to a large number of derivant compounds, fruitful structural, magnetic and transport properties would be expected in this family. As we have known, the ideal ABO3-typ…