凝胶

The process is composed of three steps: the formation of Ni_2 gel; the nucleation of nickel oxalate; the transition from Ni_2 gel into nickel oxalate sol.The nickel oxalate synthesized is identified by XRD to beα-NiC_2O_4·2H_2O with rhombohedron morphology, while two angles of the rhombus at underside are 106 and 74 degrees separately.

研究中，采用SEM、XRD、FTIR、TGA—DTA、GCMS等方法，对粉末样品进行表征。1凝胶—溶胶法制备单分散草酸镍粉末提出了一种凝胶—溶胶法制备单分散草酸镍的方法，由Ni_2凝胶生成—NiC_2O_4·2H_2O颗粒形核—凝胶Ni(OH_2向溶胶(NiC_2O_4·2H_2O)转化3个步骤组成。

Erials, such as instable geltime, low stability, poor underwatererosion resistance and so on, and based on the short geltime features of ordinary cement sodium silicate and alkaliactivated salic cementitious materials, an ideal structure model of high performance sodium silicate suspension twoshot groutingmaterial is established. An experiment is undertaken to verify the solidification value of Na+ and watererosion resistance of a grouting material combined with cement and metakaolinsodium silicate. This paper puts forward a compact structure with a dominant ingredient of—Si—Al—H zeolite gel and a minor part of C—S—H by means of IR and SEM microanalysis method.

摘要］ 针对隧道注浆工程用普通水泥水玻璃双液注浆材料存在凝胶时间不稳定、产物稳定性和抗地下水侵蚀性能差等主要问题，结合普通水泥水玻璃快速胶凝和碱激发硅铝质胶凝材料的特点，建立了高性能水玻璃悬浊型双液注浆材料的理想结构模型，并通过水泥复合偏高岭土水玻璃注浆材料的Na+固化性能和抗水溶蚀性能进行了试验验证，结合IR和SEM微观测试分析手段提出其组成结构应是以—Si—Al—H类沸石凝胶物质为主、C—S—H为辅的复合共存密实结构。

For the reaction between divinyl sulfone and N-ethylethylene-diamine or N-methylpropane-1, 3-diamine , no cross-linking occurred when the feed ratio of A〓 to BB'〓 was 1/1. When the feed ratio of DV to NDA or NPA is 3/2, no cross-linking occurred too in organic solvents such as DMSO, DMF and NMP, while cross-linking does occur in water.

对于二乙烯基砜与N-乙基乙二胺或N-甲基-1，3-丙二胺的反应，当加料配比为1／1时，反应在水和有机溶剂中不会凝胶；当配比为3／2时，反应在有机溶剂中亦不凝胶，而在水中反应时，会经过一种&假凝胶&过程，并最终发生凝胶。

The thermosensitive drug-loading to PNIP/AAm nanogel and drug release profile of in situ gelable PNIP/AAm nanogel dispersion were studied.

3研究了PNIP/AAm纳米凝胶粒对药物的温敏性负载及可原位凝胶化的纳米凝胶分散体原位凝胶对药物的释放行为。

Based jellification dynamics theory that the larger the jellification activation energy, the greater the lubricant's jelling tendency, it is advisable to analysis the whole jellification process in attempt to find out maximum jellification activation energy Emax and its ambient temperature Tmax, as a ground for judging the lubricant's pumpability.

根据凝胶动力学理论，凝胶活化能越大，润滑油的凝固趋势越大，因此对润滑油应分析其凝胶全过程，从中找出最大凝胶活化能Emax以及开始出现最大活化能的温度Tmax，作为润滑油低温可泵性判据。

The Syntheses of a High Temperature Gellant in Acid Stimulation Using Invert Emulsion Polymerization;2. Aiming at the special oxidizability of NTO,three different gellant s were chosen which could form gel with NTO,and their rheologic properties were studied.

针对四氧化二氮的特殊氧化性，筛选了三种不同胶凝剂与NTO形成凝胶，对其流变性能进行研究，并结合发动机试验、限流圈试验、发动机头部液流试验，验证了其与偏二甲肼凝胶组成的双组元推进剂用于凝胶发动机试验的可行性。

The hardness of the mixed gels increased with salts concentration, while the protein solubility, water-holding capacity and sulphydryl group content had a decreased trend. The microstructure of mixed gels showed a porous network and particulates structures by addition of NaCl and CaCl2 respectively.

结果表明：随着pH的增加，凝胶的硬度和溶解度减小，添加淀粉进一步降低了混合凝胶的溶解度；盐浓度的增加使混合凝胶硬度增加，而蛋白溶解度、持水力和巯基含量则呈下降趋势；添加NaCl 和CaCl2的混合凝胶分别呈现出多孔网状和颗粒状结构。

SP tested the vimentine expression around filling materials, from three days to two weeks after operation, the tinctorial intensity level around silicon gel was highe...

术后3～14天，硅凝胶周围波形蛋白表达量比注射用胶原蛋白高（P＜0.05），注射用胶原蛋白比HPG高（P＜0.05）；术后30～90天，注射用胶原蛋白周围波形蛋白表达量比硅凝胶高（P＜0.05），硅凝胶比HPG高（P＜0.05）。

A three-unite hydrogel that had a thermoresponsive shape memory was prepared by copolymerizing a hydrophobic monomer n-stearyl acrylate with n- undecylenic acid and acrylamide,and its structure and properties were studied by X-ray diffraction,DSC and DMA.

选用疏水性单体丙烯酸十八酯和十一烯酸以及亲水性单体丙烯酰胺制备了三元共聚凝胶P(SA-co-AM-co-HA)，通过X射线衍射、DSC、DMA等对三元凝胶的结构和性能进行了研究，发现三元凝胶形成了有序排列，这种有序排列会随着温度的变化发生可逆转变，从而使凝胶显示较好的形状记忆特性。

The temperature of volume phase transition for polymerized gels is about 110 ～ 120 ℃ higher than that of the unirradiated gels.

聚合凝胶只有体积相变而无凝胶-溶胶相转变，且聚合凝胶的体积相变温度要比光聚合前的凝胶-溶胶相转变温度高出约为110 ～ 120 ℃。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。