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PAA/PVA IPN hydrogels were prepared by a sequential method by which acrylic acid firstly. polymerizes and cross-links in PVA/water solution with UV irradiation,then PVA physical cross-linked hydrogels are formed in cross-linked PAA networksby freezing-thawing. The orthogonal test design method was used to optimize theexperimental conditions based on the mechanical and swelling properties of thehydrogels. The effect of the PAA and crosslinking agent contents on the microscopicmorphology of the PAA/PVA IPN xerogel was investigated by transmission electronmicroscopy, and on the mechanical properties of the hydogels was studied bymeasurements of mechanical properties.

针对水凝胶强度、生物相容性和刺激响应性的需要，选择了以PVA和PAA为复合水凝胶的基本分子结构；采用顺序IPN方法制备PAA／PVA IPN水凝胶，即将单体丙烯酸与PVA溶液共混，AA经紫外光辐射聚合交联在PVA溶液中形成PAA化学交联网络，再经冰冻—解冻循环过程在PAA网络内形成PVA物理交联网络。

The membranes were characterized by X-ray diffraction, Fourier transform infrared, Scanning electron microscope, Transmission electron microscope, Differential Scanning Calorimetry and contact angle meter, and their swelling and sorption properties, diffusion properties, and pervaporation properties were investigated systematically.

利用X一射线衍射、红外光谱、扫描电镜和透射电镜、差示扫描量热仪以及接触角分析等手段对膜的微观形态进行表征，系统研究了膜的溶胀吸附、扩散以及渗透蒸发性能。

Ltd., Kaifeng, He′nan 475000, China 英文摘要: Health wine has health functions and is produced by special techniques with distilling Liquor, fermenting wine or edible alcohol as base wine and edible animals and plants and food additives as aroma-producing, taste-producing and color-producing substances. Health wine has integrated food properties, healthcare properties and non-medicine properties.

保健酒是指以蒸馏酒、发酵酒或食用酒精为酒基，以食用动植物、食品增加剂作为呈香、呈味、呈色物质，按肯定生产工艺加工而成的对人体具有保健作用的饮料酒，其务必具备有食品属性、作用属性和非药品属性。

A new concept of convex set and its some characteristic properties This paper give a new definition, the support direction of a boundary point of convex set. Then use it to prove a characteric properties of convex set and some other characteric properties.

1凸集的一个新概念与凸集的某些特征性质本文引进支持方向这一新概念并利用它来证明凸集的一个特征性质，最后再用它来证明凸集的另外一些特征性质。

Two dominate variation trends are distinguished in the data plots of compressional-wave velocity versus Possion ratio, indicating the effects of mud content and calcite cement on the elastic properties of sandstone samples. In each change trend, with the rock texture transfering gradually from grain-supporting to matrix-supporting with increasing mud and calcite cement content, the propagation of elastic wave also changed from grain-to-grain contacts to rock matrix, which resulted in the measured data illustrating extremely different tendency. It helps utilize the physics properties of reservoir sandstone to extract rock texture and diagenesis properties in the research area.

样品在纵波速度－泊松比交汇图中表现出两种主要变化趋势，分别对应泥质与钙质胶结物的影响；在每个变化趋势中随泥质含量与钙质胶结物含量的增加，岩石结构从颗粒所构成的骨架支撑逐渐表现为基质支撑，弹性波能量的传播也从通过颗粒接触边界转变为通过岩石基质传播，这是使砂岩样品测试结果表现出两种截然不同变化趋势的主要原因，为利用岩石物理特性从地震资料中提取岩石结构、沉积与成岩特征的信息提供了依据。

Based on the field surveys on a wide scale, the systematic studies were made on soil acid properties, particle fractions, exchangeable performances, saturated base, free feeric properties, clay chemical components, clay mineral types and their properties of genesis.

在大量野外调查的基础上，系统地研究了土壤的酸性特征、颗粒组成、交换性能、盐基饱和度、铁的游离度、粘粒化学组成及粘土矿物类型等发生学性质。

Fire bridge is my self-developed fire-resistant steel plant trays, and its fire-resistant properties, electrical properties, metal structure and properties such as performance, can catch up with the United States, Japan, and other developed countries

5防火桥架是我厂自行研制耐火钢制桥架，其耐火性能、电气性能、金属结构性能等性能，已可赶超美国、日本、等发达国家。

In the third chapter,We study some geometric properties and spectral propertiesof the Jacobi operator on a solvable extension G of Heisenberg groups H.In the firstsection,we give the definition of G and some fundamental geometric properties on G.Inthe second section,we discuss the Integrability of certain subbundles and the geometricstructure of the induced foliations in case of integrability.In the third section,we studythe spectral properties of the Jacobi operator of G.

可解李群与类对称空间亦密切相关，Damcek-Ricci空间即是广义Heisenberg的一可解扩张李群，在第三章中，我们构造且研究了Heisenberg群的一可解扩张李群G的几何性质，第一节讨论了G的曲率，李指数映射，整体坐标等基本几何性质；第二章研究了TG的某些子丛的可积性及可积时诱导叶片的几何结构；第三节给出了G的Jacobi算子的特征值和相应的特征子空间。

Both soybean protein/viscose fiber and soybean protein/PVA fiber has fine tensile and absorption properties, good friction properties and chemical stability, excellent heat-resistant and lightfast properties.

结果表明：两种大豆蛋白纤维的纵向形态类似，而横截面形态有一定的差异；两种纤维均具有优良的物理机械性能和吸湿性，摩擦性能较好，耐热性及耐日光性能优异，化学性能较稳定。

Some type-F monists appear to hold that they can avoid the combination problem by holding that phenomenal properties are the intrinsic properties of high-level physical dispositions (e.g., those involved in neural states), and need not be constituted by the intrinsic properties of microphysical states (hence they may also deny panprotopsychism).

一些F类一元论者显得认为它们能够避开联合难题，通过认为现象属性是高阶物理部署的固有属性（例如。那些包含神经事态的，就是高阶物理部署），而且，无需被微观物理事态的固有属性所构成（所以，它们可以也拒绝泛-主-心理论）。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。