合成体

The truncated icosahedra have been prepared for the first time by prolonging the reaction time to 4 h.The XRD,SEM,TEM and Uv-vis technologies confirm the high shape difference between icosahedral gold nanocrystals and their truncated forms.

通过延长反应时间合成了一种类似足球的新型金纳米粒子—截角二十面体，研究结果表明，该粒子由二十个六边形和十二个五边形组成，截角面是{100}面。

The chiral ligands la-lf were used in the copper catalyzed asymmetric addition of diethylzinc to imines.

第二部分探索了一个新的含氮杂环丙烷的手性膦配体2的合成方法。

In order to make the uncertainty of the dose index measurement in the head phantom reasonable for the medical diagnostic X-ray radiation sources of the computed tomography, the measurement uncertainty components were analyzed according to the mathematical model for the computed tomography dose index test method with a 100 mm ionization chamber.

摘 要：为了使医用诊断计算机断层摄影装置X射线辐射源在模体中的剂量指数测量结果的不确定度评定合理，基于用带有100 mm长杆电离室的积分剂量仪测量CT剂量指数的数学模型，对其测量不确定度来源进行分析，列出了方差、灵敏系数及标准不确定度的计算公式，从而给出了CT剂量指数测量的合成标准不确定度和扩展不确定度。

In particular, a process for the synthesis of nanopowders of various materials such as metals, alloys, ceramics and composites by induction plasma technology, using organometallic compounds, chlorides, bromides, fluorides, iodides, nitrites, nitrates, oxalates and carbonates as precursors is disclosed.

具体地，公开了一种通过感应等离子体技术合成各种材料，例如金属、合金、陶瓷和复合物的纳米粉末的工艺，使用有机金属化合物、氯化物、溴化物、氟化物、碘化物、亚硝酸盐、硝酸盐、草酸盐、碳酸盐作为前驱体。

In the paper, new type of polyurethane ionomers containing carboxyl in soft segments was synthesized with IPDI, DMBA, carboxylated polycaprolactone etc.

本文利用一种新型的聚己内酯、异佛尔酮二异氰酸酯、二羟甲基丁酸等合成了软段含有羧基的聚氨酯离聚体。

High isotactic poly-1-butene was synthesized with supported titanium catalyst system, compared the affect of two kinds of external donors to the polymer's structure and properties.

采用Z-N催化剂催化1-丁烯聚合合成高全同含量聚1-丁烯，比较了2种外给电子体对所得聚合物结构和性能的影响。

As a key building block for proteoglycans, one of the major components of connective tissue, glucosamine plays an important role in the maintenance of healthy joint cartilage.

是蛋白糖合成的关键，是结缔体素的主要组成部分，胺基葡萄糖在关节软骨的健康中扮演着重要的角色。

Mol/m2s low light treament cause leaf-upgrowth stopping, flower withering and losing fruit-settle capability. Fruit-settle efficiency enhance in 400μmol/m2s low light maybe because high light's injury on flowers are reducing. 200μmol/m2s and 80μmol/m2s low light treament cause carborhybrate synthesis decreasing, prevent carborhybrate's transforming to flower, lead to fruit-settle efficiency reducing. 30μmol/m2s low light is close to light compensation point of peach tree, which cause nutrition lackness, lead to peach tree's mechanism declining eventually.

表明400μmol/m2s的弱光提高花朵向幼果的转化可能是400μmol/m2s的弱光减弱了强光对花器的伤害的原因。200μmol/m2s和80μmol/m2s的弱光下，叶片合成的碳水化合物减少，向生殖器官的运转受到抑制，分配量减少，生殖生长减慢，落花延迟且花朵向幼果的转化率下降；30μmol/m2s的弱光已接近光补偿点，导致桃树营养缺乏，株体机能降低。

Synthesis of some of the derivatives of the ligand was tried in order to study the properties of this series catalyst.

为了进一步深入研究该系列催化剂的性能，尝试合成了一些此类型的新配体。

This paper with 29 references reviewed the design, synthesis and applications of organosilyl linkers in solid phase synthesis within 26 years.

本文从直接法和间接法两方面综述了26年来具有代表性的多种有机硅连接体的设计、制备及其在固相有机合成中的应用。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失