查询词典 ir

Character: White or almost white crystalline powder, smell-less;Assay:≥98.5%;Solubility:Soluble in water, Slightly soluble in acetone and ethanol;IR:Complies with the working standard;Chemical identification:Red;Na Salt indentification:Complies with the standard;Relative substance:Complies with the working standard;pH:8.0-9.5;Loss on drying:≤0.5%; Heavy metal:≤ 20ppm

特征及特性：应为白色或类白色结晶性粉末；无臭，无味；含奥扎格雷钠(C13H11N2NaO2)≥98.5%；在水中溶解，在乙醇和丙酮中微溶；IR图谱与对照品一致；化学鉴别应显红色；溶液主斑点与对照品溶液主斑点的位置相同；钠盐鉴别符合规定；有关物质鉴别符合规定；pH：8.0～9.5；；干燥失重≤0.5%；重金属≤20ppm

After chemistry and ~1H-NMR,~(13)C-NMR、GC-MR、UV, IR Spectral analysis instrument synthesis appraisal compoundⅠ,Ⅱ,ⅢRespectively isβ-Sitosterol, oleanolic acid , ursolic acid; compoundⅣ,The structure is being appraised. CompoundⅠand compoundⅢare discovered for the first time from Radix Rosa davurica pall. Through pharmacognosy research and the chemical composition carries on the system to the root of Rosa davurica pall.

经化学及~1H-NMR、~(13)C-NMR、GC-MR、UV、IR等光谱分析仪器综合鉴定化合物Ⅰ、Ⅱ、Ⅲ分别为β-谷甾醇、齐墩果酸、熊果酸，其中化合物Ⅰ和化合物Ⅲ为首次从山刺枚根中发现。

XRD and IR were used to study the change of zinc stearate.

利用XRD、IR，研究了催化剂在反应前后的变化，确定了其失活的主要原因

Section 1 Theoretical Study of Metabolic SyndromeProposition of MS think each other independent in the past,disease and supersession disorder that cut apart each other regard IR as core their link together,make people know and deal with and take place the great change to a lot of important diseases.

第一部分理论研究MS的提出把过去认为互不相关、彼此分割的疾病和代谢紊乱以IR为核心联系在一起，使人们对许多重要疾病的认识和处理发生了重大转变。

XRD and IR spectra studies showed that the product consists mainly of non-crystal and PO is built up tetrahedrally.

IR光谱分析产品中的磷酸根离子局部对称性为正四面体结构。

FT-IR and UV-vis spectra indicated the existence of tetrahedrally coordinated Ti atoms, which may act as active sites for epoxidation of olefin.

FT-IR和UV-vis结果说明该沸石骨架在存在四配位钛，从而有可能成为催化烯烃环氧化反应的活性中心。

However, in the case of low Ir or Ta containing, thermolysis of the major component was confined by the minor one.

但是对于低Ir含量或低Ta含量的混合体系，在高温区域（610～800℃间），第二组元对主组元的热解氧化发生了抑制作用。

The structure were characterized by FT-IR, NMR and chemical titrimetry. The reaction kinetics of condensation polymerization hyperbranched polyester has also been studied.

采用FT-IR、NMR和化学滴定等方法对产物进行了表征和分析，并研究了超支化聚酯的缩聚反应动力学。

By using IR ,XRD ,TG and ;n-butylamine titrimetry ,the catalysis of heteropolyacidic salt were studied and the its activity may be connected with acidic centre owned by heteropolyacidic salts.

IR、XRD、TG分析和正丁胺滴定法表面酸度测定表明，杂多酸银盐的催化性能与其所具有的酸性中心有关。

RESULTS: Apoptosis of pulmonary cells was found in both IR group and TMP group.

结果： IR组与 TMP组在肺缺血再灌注后1、3、5 h发生明显的肺泡上皮细胞凋亡。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。