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Moreover, it was successfully linked with lactobionic acid through amine groups on the surface of particles, and used to recognize living liver cells successfully.(3) In order to simplify the proceeding of preparation of silica-coated qdots, a novel one-pot method using 3-mercaptopropyl-trimethoxysilane as a capping molecule was proposed for the first time. Furthermore, amine and phosphonate groups were also modified on the surface of silica-coated qdots simultaneously. This was the first time the synthesis and the surface modification of qdots were performed in the same system.

3在前一部分工作的基础上,进一步简化量子点的合成与包壳步骤,以MPS为稳定剂,制备了硅壳包被的CdTe量子点,并在硅壳外同步修饰氨基及磷酸基团,首次成功实现了量子点的合成与表面的功能化修饰在同一体系中进行,从而制得了水溶性的、表面带有氨基和磷酸基团的硅壳型CdTe量子点。

The effects of the dosages of initiators, emulsifier, organicsilicon and 2-Hyciroxypropyl acrylate on conversion and graft efficiency were studied. Moreover, the particle morphology, particle size distribution and glass transition temperature of latex were characterized by Transmission Electron Microscopy, size distribution analyzer and Differential Scanning Calorimetry.

考察了引发剂用量、乳化剂用量、有机硅用量、丙烯酸羟丙酯用量对硅-丙核/壳乳液转化率、接枝率的影响,并借助透射电镜、粒度分布仪和差示扫描量热仪分别对乳胶粒形貌、粒径分布及其玻璃化转变温度进行了表征。

The relationship between molecular modification of erythromycin and NMR chemical shifts was summarized. It's noticeable that downfield of shifts of H-3 (△δ 0.2) after silylation and upfield of shifts (△δ-0.4) after methylation. No changes were observed after methylation.

分析总结了红霉素分子修饰与核磁共振化学位移变化之间的关系,并且发现大环上H-3硅烷化后由高场移至低场(△δ为0.2),甲基化后又由低场移至高场(△δ为-0.4),变化均较大;而且一旦甲基化后H-3化学位移在高场几乎不再变化。

In the present embodiment, the interelectrode insulating film 8 is formed of a silicon oxide film or a silicon nitride film having a thickness of 400 nm or below.

在本方式中,电极间绝缘膜8,由膜厚度为400nm以下的氧化硅膜或者氮化硅膜构成。

In this dissertation, Ir-catalyzed asymmetric hydrogenation, asymmetric transfer hydrogenation and asymmetric hydrosilylation of quinoline derivatives have been studied.

本论文研究了铱催化喹啉衍生物的不对称氢化、不对称转移氢化和不对称硅氢化反应。

The changes of silicate tetrahedron of fly ash in the process of mechanical grinding were analyzed by trimetheylsilicane.

采用三甲基硅烷化分析技术,研究了粉煤灰机械研磨过程中硅氧四面体结构的变化趋势。

The molar extinction coefficient, maximum absorption wavelength, reaction rate constants of trans-cis photochemical isomerization, thermal back-isomerization and photochemical back-isomerization and equilibrium constant of photochemical back-isomerization reaction of a novel photochromic liquid crystalline dendrimer G1 of the first generation containing nitroazophenyl groups on its periphery and small molecular azophenyl moiety M1 in solution were described.

张其震*1,盛昕1,李爱香1,王艳2摘要:研究了树外围含12个硝基偶氮苯基元新型一代碳硅烷光致变色液晶树枝状大分子G1和基元小分子M1在溶液中的最大吸收波长、摩尔消光系数、反-顺光化学异构化反应速率常数、热回复异构化反应速率常数、光化学回复异构化反应平衡常数及速率常数。

The process is carried out by rubbing into filament raw materials, digesting in plasticizing liquid of sodium hydrate and sodium silicate at 100-130degree for 1-2hrs to obtain plasticized raw material, high-speed agitating plasticized raw materials with non-metallic minerals, octadecanoic acid and silicon oil at 100-130degree for 15-45hrs, coating and drying to obtain the final product.

先用农用搓揉机直接搓揉成丝状物料,然后丝状物质在含氢氧化钠和硅酸钠的塑化液中于100~130℃下蒸煮1~2小时,得到塑化物料,最后将塑化物料同改性非金属矿粉、硬脂酸和硅油在100~130℃下高速搅拌15~45分钟进行包覆处理,干燥后便得到目标产物。

The method adopts the following steps: after mixed, phosphorus source, silicon source, aluminum source, an organic template agent, water and a precursor of the SAPO molecular sieve are hydrothermally crystallized for at least 0.1 hour at the temperature ranging from 110 to 260 DEG C to obtain the SAPO molecular sieve; wherein, the preparation method for the precursor of the SAPO molecular sieve has the following steps:, the molar ratio is 0.03 to 0.6 R:(Si0.01 to 0.98: Al 0.01 to 0.6: P0.01 to 0.6): 2 to 500 H2O; wherein, R stands for mixture solution of raw materials which is blended by the phosphorus source, the silicon source, the aluminum source, the an organic template agent and water of the template agent;, the mixture solution of raw materials prepared in step reacts at the temperature which is at least 50 DEG C lower than the crystallization temperature for at least 0.1 hour.

本发明通过采用包括以下步骤:将磷源、硅源、铝源、有机模板剂、水和SAPO分子筛前驱体混合后在110~260℃的温度下水热晶化至少0.1小时获得SAPO分子筛;其中SAPO分子筛的前驱体的制备包括以下步骤:将摩尔配比为0.03~0.6R∶(Si0.01~0.98∶Al0.01~0.6∶P0.01~0.6)∶2~500H 2 O,式中R代表模板剂的磷源、硅源、铝源、有机模板剂和水混合成原料混合液;将步骤制备的原料混合液在低于晶化温度至少50℃的温度下反应至少0.1小时的技术方案较好地解决了该问题,可应用于含氧化合物制烯烃催化剂的制备过程。

β-Cyclodextrin with the 6-hydroxyls protected by dimethyl-tert- butylsilyl was selectively oxidized by lead tetraacetate. After the silyl groups were removed off by boron fluoride-etherate, mono-2,3- dialdehydro-β-cyclodextrin as a cuniform molecule could be constructed.

用四醋酸铅将七元(6-O-二甲基叔丁基硅基)-β-环糊精选择氧化、并用三氟化硼乙醚脱硅基保护基后,再经分离、纯化,可获得具有&楔筒状&空腔的单-2, 3-二醛基-β-环糊精。

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The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应,而且减少跟风的可能性。

The new PS20 solar power tower collected sunlight through mirrors known as "heliostats" to produce steam that is converted into electricity by a turbine in Sanlucar la Mayor, Spain, Wednesday.

聚光:照片上是建在西班牙桑路卡拉马尤城的一座新型PS20塔式太阳能电站。被称为&日光反射装置&的镜子将太阳光反射到主塔,然后用聚集的热量产生蒸汽进而通过涡轮机转化为电力