查询词典 o-dihydroxybenzene

Objective to establish a method for simultaneous determination of rutin, hyperin, isoquercitrin, 4,5-O-dicaffeoyl quinic acid and isorhamnetin-3-O-glucoside in Herba Artemisiae Capillariae.

目的 建立同时测定茵陈中芦丁、金丝桃苷、异槲皮苷、4，5-O-二咖啡酰奎宁酸、异鼠李素－3-O-葡萄糖苷含量的方法，为茵陈药材的质量控制提供依据。

Results The linear response range was 0.9420-18.84mg L^(-1)(r=0.9995), 1.190-23.79 mg L^(-1)(r=0.9995), 1.107-22.14 mgL^(-1)(r=0.9994), 56.78-1.136×10^3 mgL^(-1)(r=0.9990) and 0.6219-12.44 mgL^(-1)(r=0.9998), respectively (n=5). The average recoveries (n=9) of rutin, hyperin, isoquercitrin, 4, 5-O-dicaffeoyl quinic acid and isorhamnetin-3-O-glucoside were 98.1%, 100.7%, 98.4%, 100.2% and 101.7%, respectively.

结果 芦丁、金丝桃苷、异槲皮苷、4，5-O-二咖啡酰奎宁酸、异鼠李素－3-O-葡萄糖苷质量浓度分别在0.942~18.84mgL^(-1)(r=0.9995)、1.190~23.79mgL^(-1)(r=0.9995)、1.107~22.14mgL^(-1)(r=0.9994)、56.78~1.136×10^3 mgL^(-1)(r=0.9990)、0.6219~12.44mgL^(-1)(r=0.9998)内与峰面积呈良好的线性关系(n=5)；方法回收率(n=9)分别为98.1%、100.7%、98.4%、100.2%、101.7%。

Based on analysis of degradation and transformation of organic compounds in coke plant wastewater through every stage of the A 1 A 2 O biofilm system,several typical nitrogen heterocyclic compounds (pyridine,indole,quinoline,isoquinoline,2\|methyl quinoline and 8\|hydroxyl quinoline) in coke plant wastewater were selected for the study.

在对焦化废水中有机物在A1 A2 O生物膜系统中降解转化规律进行分析的基础上，选取焦化废水中 6种主要的含氮杂环化合物：吡啶、吲哚、喹啉、异喹啉、2 甲基喹啉、8 羟基喹啉，与苯酚共同配制成溶液，在A1 A2 O生物膜系统中运行，结果表明上述几种含氮杂环有机物在A1 A2 O系统中都可得到较完全的去除。

This heat treatment can prevent the formation of large Sr-Ca-Cu-O particles which can form in tape during isothermic heat treatment of high temperature and can release 30〓 phase in the tape.

发现在银套Bi-Pb-Sr-Ca-Cu-O预烧粉末轧制带热处理中37〓相晶粒以（001）晶面平行带面生成；等温高温处理产生含粗大Sr-Ca-Cu-O相颗粒的组织；升温处理可以避免形成Sr-Ca-Cu-O粗粒并消除30〓相。

Crystal structure of melilite is limited by MgO content of glazes, also restricted by O/Si ratio. Because of differences of ionic radius and ionic polarization capacity between Ca〓 and Mg〓, suitable O/Si ratio for melilite is influenced by content of CaO and MgO to a certain extent.

结晶釉中黄长石结构的出现，除了和MgO含量相关外，还受O/Si比值的限制；而Ca〓和Mg〓离子半径和离子间的极化能力的差异，使钙镁含量对形成黄长石结构的O/Si比值具有一定的影响。

Two toxins Vx6c and Vx6d with novel sequences was characterized from the venom ducts of Conus marmoreus. They are two new members of O-superfamily because of their disulfide bone frameworks, but they show low sequence homology with other O-superfamily members from molluscivorous or piscivorous species.

从菖蒲芋螺中获得了2个全新序列的毒素Vx6c和Vx6d，是继Vx6a和Vx6b后从食虫芋螺中获得的O-超家族毒素成员，而他们在一级结构上与来自食鱼和食螺芋螺的其他O-家族毒素却有着很大差别。

In the Infrared spectrum of complexes, there are strong absorptions in ~1 660 cm-1 which can be ascribed to the antisymmetric vibration of the O -C -O unit in heterometallic multinuclear complexes. The different dates of antisymmetric stretching vibration of ox present two modes.

在红外光谱中，杂多核配合物在～800 c~(-1)有强的O—C—O反对称伸缩振动吸收，根据草酸根表现的非对称伸缩振动、对称伸缩振动的数值，判断出它们有两种不同的配位方式。

The numerical results show that our method is effective. For the noncharacteristic Cauchy problem for 2-D and 3-D heat equation, we give the explicit H\"{o}lder type stability estimates by using weighted energy method. Especially,H\"{o}lder type stability estimate for discrete solutions of the heat equation is obtained through a fully discrete method. The numerical results are presented.

对于二维和三维的热传导方程的非特征Cauchy 问题，我们利用权函数方法，给出了一个显式的H\&{o}lder 型的稳定性估计，特别的，对于二维的非特征Cauchy问题，我们利用充分离散的方法，对二维问题的离散形式同样给出了H\&{o}lder 型的稳定性估计，同时，我们也给出了数值例子来说明我们的估计。

Firstly, the reaction thermodynamics was analyzed. Then, the reaction mechanism was studied, and the results are as following:① Ca moves to the surface of Dy〓O〓 by vapor phase;② Dy〓O〓 reduced to Dy by Ca is fast;③ Dy moves to the Fe surface mainly by vapor and various Dy-Fe alloys are produced gradually;④ The forming process of DyFe〓 may be described by Contracting Core Model;⑤ The rate-controlling step of the reaction is the Dy diffusing toward contracted and nonreaction nuclear center Fe.

首先考察反应的热力学可能性；其次探讨反应机理；通过实验确定：①Ca主要以气态形式迁移到Dy〓O〓表面参与反应；②Dy〓O〓被Ca还原为Dy的速度很快；③Dy主要以气态形式迁移到Fe表面逐级生成Dy-Fe合金；④DyFe〓的形成过程可以应用收缩核模型来描述；⑤Dy通过DyFe〓产物层向缩小的未反应核中心Fe的扩散是反应的控速步骤，通过动力学计算确定：还原扩散反应的表观活化能E〓=45kJ/mol。

Large condensate gas pools are developed in the Ordovician and Carboniferous in the Lunnan low salient. Geochemical study shows that the Ro of gas condensate in these gas pools is in the range of 0.8% 1.0%(far below the threshold of R o＝1.3％ for thermal cracking), and the condensate gas is overmature dry gas (with R o＞2.0%). Moreover, the crude oil and dry gas in the study area were charged in different stages, indicating that the genesis of the condensate gas was not thermal cracking.

轮南低凸起奥陶系及石炭系发育大规模的凝析气藏，地球化学的研究结果表明，这些凝析气藏中凝析油 Rc 在0.8%~1.0％（远低于热裂解成因 R o＝1.3％的门限），凝析气为过成熟干气（回归 R o＞2.0％）；同时，区内原油与干气的充注期相异，表明轮南地区的凝析气藏并非热裂解成因的产物。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。