胶凝

Scanning electron microscopy,transmission electron microscopy,circular dichroism and small-angle X-ray diffraction were used to analyze the aggregation mode of CSG in the organogel phase.A hierarchical self-assembly model was proposed to explain the transition from molecular to primary and secondary structure.It is shown from our results that CSG can aggregate into a micellar fibril nanostructure with high length-to-width ratio which is bundled and entangled to form a three-dimensional(3D) network that immobilize the fluid component probably by surface tension.Moreover,sol-gel polymerization of tetraethoxysilane was carried out using CSG in the gel phase.

通过扫描电镜(ScanningElectron Microscopy，SEM)、透射电镜(Transmission Electron Microscopy，TEM)、圆二色谱(Circular Dichroism，CD)和小角X—射线衍射仪(Small-angle X-rayDiffraction，SAXRD)考察CSG分子自组装行为结果表明，CSG形成的聚集体具有多级结构：首先CSG通过手性堆叠自组装形成直径在9—10nm的细纳米纤维，这些细的纳米纤维再以不规则的六方堆积的方式进行排列，构成直径在40—100nm的粗纳米纤维(即细纳米纤维的&捆束&)，最后粗纳米纤维互相粘连形成三维网络状结构，使有机溶剂&固定&，从而形成凝胶；以CSG有机凝胶为模板，四乙氧基硅烷为前体，通过溶胶—凝胶聚合的方法制备了直径大约为100nm的二氧化硅纳米管。3。

The SiO2 gel was prepared through hydrolysis and condensation polymerization of tetraethyl orthosilicate and H2O. The gel and LaNi4.25Al0.75 powders were mixed completely and heated at 500 ℃ for 2 h to obtain samples.

摘 要：以正硅酸乙酯为原料，采用溶胶凝胶法制备多孔SiO2凝胶，将LaNi4.25Al0.75合金粉与凝胶混合在500℃进行真空烧结。

The occurrence of deleterious alkali-carbonate reaction and performance of certain aggregates were determined by detailed petrographic examination of the aggregates in destructive concrete'structures.

在对材料制备过程的研究中，通过对溶胶—凝胶过程及干凝胶不同烧成温度的物相变化的研究，结合热力学函数方法的计算结果，提出了多组份溶胶的形成过程、溶胶的干燥过程、凝胶的烧成过程中的主要物相的生成反应。

The high content of Iohexol, a contrast media, in nanogel based on PNIPAAm dispersion had a profound effect on the volume phase transition of nanogel particles and thermosensitive phase behavior of nanogel dispersion, which mainly due to the presence of Iohexol with polyhydroxy group changed the micro-environment of nanogel particles.

这主要是因为多羟基的碘海醇的存在改变了纳米凝胶粒周围的微环境，使纳米凝胶粒在较低温度时处于收缩状态，并使纳米凝胶的VPTT比不含碘海醇的水分散体的升高10℃。

Using New Zealand rabbit ears cartilage makes chondrocyte suspension, Fibrinogen was mixed with D-hank's makes a final fibrinogen concentration of 50mg/ml mixture solution, then chondrocytes resuspend with fibrinogen solution, chondrocytes-seeded fibrinogen was mixed with thrombin (25U/ml in 40mM calcium choride) to make chondrocytes/fibrin glue polymer. Pluronic F-127 was mixed with D-hank's makes a final Pluronic F-127 concentration of 400mg/ml mixture solution, then chondrocytes resuspend with Pluronic F-127 solution to make chondrocytes/Pluronic F-127 polymer. The chondrocyte concentrations was 10 million chondrocyte/ml of polymer.

为确定纤维蛋白凝胶与Pluronic F-127在注射方式形成组织工程化软骨过程中的优劣，我们进行了如下实验：应用新西兰大白兔耳软骨获取软骨细胞并体外培养，纤维蛋白原应用D-hank's液配制为50mg/ml，然后以纤维蛋白原溶液重悬软骨细胞，再与40mM的氯化钙配制的25U/ml凝血酶混合形成软骨细胞—纤维蛋白凝胶复合物；Pluronic F-127应用D-hank's液配制为400mg/ml，同样用PluronicF-127溶液重悬软骨细胞而形成软骨细胞—Pluronic F-127凝胶复合物。

Secondly, according to the construction and characteristic of the N-isopropylacrylamide and the temperature-sensitivity of PNIPA hydrogel, Pdualistic hydrogel was synthesized by microwave low temperature plasma. The effects of the factors on the swelling characteristic of P dualistic hydrogel, such as treatment time and power of plasma, concentrations of crosslinking agent and total monomers, proportion of AMPS, polymerizing temperature etc, was discussed in detail. The three dimensions structure , thermostability , reversional volume , swelling/deswelling kinetics, temperature-sensitivity and pH-sensitivity of the hydrogel were also investigated. The optimal synthesizing technics of P dualistic hydrogel initiated by microwave low temperature plasma was confirmed.

在此基础上，结合NIPA的结构特征和PNIPA的温敏性，用微波低温等离子体引发聚合了P二元智能凝胶，详细探讨了微波低温等离子体处理功率、处理时间、总单体浓度、AMPS单体浓度、交联剂浓度及聚合反应溫度等因素对P二元凝胶溶胀性能的影响；并对其三维交联结构、热稳定性、失水-吸水动力学、温度敏感性、pH敏感性、体积复原性等进行了研究；确定了适合微波低温等离子体引发聚合P二元智能凝胶的最佳工艺。

The present invention provides a method for preparing biodegradable and biocompatible, porous, polymeric scaffolds for tissue engineering, which comprises the steps of: dissolving a polymer in an organic solvent to prepare a polymeric solution; mixing an effervescent salt in the resulting polymeric solution to give a polymer/salt/organic solvent mixed gel; removing the organic solvent from the polymer/ salt/ organi c solvent mixed gel; and effervescing the salt in the resulting polymer/salt gel to yield a polymeric scaffold.

一种用于组织工程学的生物可降解和生物相容的多孔聚合物支架的制备方法，该方法包括下列步骤：在一种有机溶剂中溶解一种聚合物以制备聚合物溶液；在所得的聚合物溶液中混入泡腾盐，得到聚合物／盐／有机溶剂混合的凝胶；从聚合物／盐／有机溶剂混合的凝胶中除去有机溶剂；和在酸性溶液中浸泡所述凝胶以使所述盐泡腾产生聚合物支架。

The results show that MgO powder is enwrapped by the BST sol during the Sol-Gel process.

结果表明，采用溶胶－凝胶法制备出包裹MgO粉体的BST凝胶，凝胶经干燥、预烧得到BST/MgO复合粉体。

Photoluminescence properties of ZnSe/silica gel-glasses were investigated by an advanced spectrum system. Excitated by laser of two different wavelength, the electron transition occurred in two different relaxation approaches. Interband radiation spectra and the surface defect radiation spectra of ZnSe nanoparticles were obtained. The correlation between the wavelength of eradiated light and the incident light verifies that the electronic-hole structures change with the size of the nanoparticle.

利用先进的稳态光谱测试系统研究了ZnSe/SiO〓凝胶玻璃纳米复合材料的光致发光特性，凝胶玻璃基纳米复合材料样品中观察到不同波长激发光激发样品，导致激发态电子经两种不同的弛豫途径的辐射跃迁发光，即ZnSe纳米粒子的带间发射光谱和ZnSe纳米粒子的表面缺陷态发光，辐射光的波长与入射光的波长是连续相关的，证实了凝胶玻璃中ZnSe纳米粒子存在随尺寸变化分立的能级结构。

The influences of drug entrapment efficiency and drug release properties were investigated. Everted sac experiments were carried out using viable segments of rat intestine for comparing mucoadhesive characters.

利用大鼠肠囊外翻实验对凝胶小球的生物黏附性能进行比较，通过对释放机理的探讨和凝胶小球溶胀性的测定进一步证明2种凝胶小球释药行为的不同。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！