查询词典 ir

More Fe(superscript 3+) in the yellow pyromorphite is found by XRF. The result of XRF makes it sure that more Pb in the green mineral makes its vibrational frequency lower in IR.

通过XRF分析发现黄色晶体比绿色晶体含有更多的Fe(上标 3+)，而Fe(上标 3+)常使矿物呈现黄色，同时证实了黄色磷氯铅矿的红外吸收峰频率偏高是因为它的铅含量低于绿色矿。

The origination, development and situation of the IR characterizaion method of the basicity of solid catalyst s through pyrrole adsorption.

本文通过文献综述，讨论了红外光谱方法以吡咯为探针分子研究固体催化剂表面碱性的起源、发展过程和最新进展。

Methods: 18 healthy new-zealand rabbits were randomly divided into 3 groups (6 for each group): ischemic reperfusion group,ischemic preconditioning group and ischemic preconditioning combined with pyrrolidine dithiocarbamata group (group IPC+PDTC).

选择健康新西兰大白兔18只，随机分为缺血再灌注组(ischemic reperfusion， IR)，缺血预处理组(ischemic preconditioning ，IPC)及缺血预处理联合PDTC组，每组6只。

In this study, the glasses were prepared from reagent-gade chemicals Mg2, CaCO3, BaCO3 ,Al2O3, and 9wt% ZrO2 which acts as nucleating agent, by quenching method. The glass-ceramics, which are transmitting in the middle IR region and have improved mechanical strength, were made from the parent glass via suitable crystallization heat-treatment.

本研究是以Mg2、CaCO3、 BaCO3 及Al2O3，为主要的成分，再添加9wt ﹪ZrO2作为成核剂，用高温淬冷的方式制备出玻璃，再施以结晶热处理，希望制出结晶化且具有透中红外光的玻璃陶瓷，以提高机械强度。

These Ir complexes, bearing the chromophore ligand pyridine, isoquinoline and quinazoline respectively, exhibit green-to-red photoluminescence with moderate to high quantum efficiencies in the degassed fluid state and bright emission in solid state.

首先，描述一系列含P^O辅助基的铱金属错合物发光材料之设计概念，这些铱金属错合物藉由pyridine， isoquinoline和quinazoline不同的发光基团调控，磷光放光可以由绿色改变至红色，不论在除氧的溶液态以及固态都有相当不错的量子效率，并且具有效率高、寿命长的优点。

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。

Up to 97% ee was also obtained in the asymmetric hydrogenation of the more difficult and less studied 2,3-disubstitued quinoline derivatives.

以手性二胺与金属铱形成的配合物Cp*Ir(CF3TsDPEN)为催化剂，研究了在空气条件下喹啉衍生物的不对称氢化反应。

It is necessary to re quire students to know UV and NMR spectra of flavonoids, I R

化合物的UV，NMR 波谱，蒽醌的IR 以及麻黄生物碱的NMR 谱特征。

The pupil, ir is and radiating lines look just like the human eye...

瞳孔、虹膜和放射的线条，就像人的眼睛。

An infrared/radio frequency dual-mode dichroic beam combiner with multilayer slab configuration is designed, which is based on thin film interference theory. It can combine broad wave band beams in 2D and large-angle. Then, the theory of the reflection rate of IR is analyzed and the transmission rate of RF and some calculated results are given.

利用薄膜干涉理论设计了多层结构的红外／微波波段波束合成器，实现了在二维平面大角度范围内对宽频段波束的合成，并对这种结构对红外的反射率和对微波的透射率进行了理论计算和分析。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。