其原因为随着温度的升高，附着水排出和羟基结构的缩合。
This was attributed to the loss of water of hydration as well as the condensation of structural hydroxyl groups with increasing temperature.
研究表明，由于具有多酚羟基结构，茶多酚复合体及其单体儿茶素可以有效消除自由基。
Research have shown that the structure of phenolic hydroxyl can effectively dispelling the free radical.
由于气相色谱对H_2的检出灵敏度特高，可作为对菱铁矿中含有羟基结构的微量粘土及其矿物杂质的检测方法，反之亦然。
The gas chromatography has extremely high sensibility to identify H_2, so it is a method to detect siderite which contains micro clays and impurity minerals with OH groups, vice versa.
虽然由过去之文献已知添加具有二羟基结构的塑化剂可改善此种不良现象，但塑化剂的添加往往伴随著薄带强度的降低且对生胚烧结后的致密度有负面的影响。
There are some papers proposed adding plasticizer which has di-hydroxyl group structure to improve this bad phenomenon but adding plasticizer will decrease the strength and density of green body.
其分子结构是由五个成员国，不饱和内酯环两个羟基。
Its molecular structure is made up of a five member, unsaturated lactone ring with two hydroxyl groups.
探讨了羟基磷灰石生物活性陶瓷的制备工艺对材料结构稳定性及力学性能的影响。
The influence of preparation techniques of hydroxyapatite bioactive ceramics on their structural stability and mechanical property were studied.
重点研究了生物活性梯度涂层中羟基磷灰石高温结构稳定性。
Structural stability of hydroxyapatite at high temperature in bioactive gradient coatings was studied.
同时，还发现用钯修饰氧化锌不仅可以调节其能带结构，而且还影响了氧化锌上表面羟基的含量。
It is found that the modification of palladium not only modulates the electronic structure of ZnO but also affects the amount of surface hydroxyl.
层结构羟基丢失的难易程度与交联度有关。
The amount of structural hydroxyl loss can be correlated with the crosslinking degree of AL-CLS.
由于核酸含磷酸基团、碱基、脱氧核糖羟基以及双螺旋结构，使金属络合物容易在这些位置发生多元络合反应。
Since the nucleic acids contain phosphonic group, basic group, desoxyribose hydroxy and double spiral species in nucleic acids, nucleic acids form easy multicomponent complexes with metal complex.
探讨喷涂过程中羟基磷灰石晶体的相变化与结构稳定性。
Phase changes and structural stability of hydroxyapatite in this process were explored.
合成了1 （8氨基喹啉5偶氮） 8羟基3 ，6萘二磺酸（AQHNA） ，其结构经红外光谱和元素分析证实。
A new reagent 1 (8 Aminoquinoline 5 azo) 8 hydroxy 3,6 naphthalenedisulfonic acid(AQHNA) was synthesized. The product was confirmed by elemental analysis and infrared spectra.
发现国产紫胶中，紫胶桐酸C_（9、10）上的二个羟基处于交叉位，用现代光谱学手段证实了前人用化学方法推测的壳脑酸分子结构。
It was found that the two hydroxyl groups on C9,10 of aleuritic acid were in cross position. The molecular structure of shellolic acid was confirmed by modern spectrometry.
结果表明，FS存在结构羟基，其中一些羟基具有化学反应活性。
The results showed that structural hydroxyls existed on FS and some of those were active.
研究表明，棓酰类多元酚可与铝形成络合物，其络合物是铝和棓酰基中苯三酚的邻位二羟基形成的，它是稳定的五员螯合环结构；
It is show that the complexes of galloyl type hydrolysable tannins with aluminum are formed which involve five-member ring stably formed adjacent hydroxyl groups in galloyl to aluminum atoms.
简要介绍了羟基磷灰石的结晶结构和其理化性质，综合论述了纳米羟基磷灰石的制备工艺及其原理。
The crystal structure and the characteristics of hydroxylapatite are briefly introduced. the preparation methods and the principle of nano-hydroxylapatite are summarized at length.
采用相转移催化法合成了1羟基2萘甲酸四乙酰葡萄糖酯，并进行了IR、1HNMR、MS和元素分析，证明了其结构。
Tetraacetyl glucosyl ester of 1 hydroxy 2 naphthoic acid was synthesized by PTC method and confirmed by IR, 1HNMR, MS and elemental analysis.
使用石膏作为原料，通过水热反应得到具有特殊结构的多孔羟基磷灰石。
Gypsum was used as raw material to prepare porous hydroxyapatite with hierachical structure by hydrothermal reaction.
塔格糖是果糖的“差向异构体”，在分子水平上，除了第四个碳原子上的羟基和氢基团倒置外，D -塔格糖与D -果糖的结构是一样的。
On a molecular level, D-tagatose is structurally identical to D-fructose, except for an inversion of the hydroxyl and hydrogen groups at the fourth carbon atom.
目的以聚乳酸-羟基乙酸共聚物（PLGA）为材料，采用静电纺丝方法制备纤维支架，考察制备参数对纤维支架结构及纤维直径的影响规律。
Objective To prepare PLGA fiber scaffolds by electrospinning process and investigate the influence of preparation parameters on the structure of the scaffolds.
基于喹啉，8 -羟基喹啉或8 -氨基喹啉的荧光传感器设计的结构和原理已经有过介绍了。
The structures and principles of design for the fluorescent zinc sensors based on quinoline, 8-hydroxyquinoline or 8-aminoquinoline, are introduced.
本发明涉及纳米材料及其制备技术领域，具体涉及空心纳米结构羟基磷灰石及其制备方 法。
The invention relates to the technical field of nanometer materials and the preparation thereof, in particular to a hydroxyapatite with a hollow nanometer structure and a preparation method thereof.
在理化性质测定方面，将葛根素分子结构中的4’-酚羟基进行酰化后其理化性质发生了一定的变化。
When we acylated the 4'-phenolic hydroxyl group in the molecular structure of puerarin, the derivatives'physico-chemical properties had some changes.
为此，本文利用红外光谱法研究了用廉价法合成的TS - 1的骨架结构、羟基和酸性。
Therefore, in this paper the infrared spectroscopy (IR) technology is used to study the skeleton structure, hydroxyl groups and surface acidity of the low-cost TS-1.
纳米银颗粒与羟基发生电荷吸附作用，固定在鞣酸的空间网状结构中，稳定存在。
There could be a coordination bond between the silver atom and the hydroxyl group of tannic acid, which stabilize the Ag nanoparticles in the spatial reticulate structure of tannic acid.
用透射电子显微镜对四方氧化锆多晶（TZP）增韧羟基磷灰石（HA）复合材料的微观相结构进行了观察与分析。
The microstructure and phases present in hydroxyapatite(HA) reinforced by tetragonal zirconia polycrystal (TZP) were investigated by using transmission electron microscopy(TEM).
复合材料的晶相组成，羟基磷灰石晶体大小、胶原纤维的结构等都与天然骨相似。
The composites were similar to natural bone to some extent in crystallite phase composition, crystallite size of hydroxyapatite and micro-structure of collagen fibril.
采用SEM、EDS和XRD等测试手段研究不同组分羟基磷灰石基生物活性梯度涂层的显微结构和残余应力。
Microstructure and residual stress of hydroxyapatite bioactive gradient coatings with different composition were studied by SEM, EDS and XRD.
以钼磷酸为催化剂合成了两种羟基乙酸酯，并经沸点和核磁共振氢谱确定了它们的组成和结构。
Molybdophosphoric acid used as the catalyst, two alkyl glycolates were prepared. The glycolates were characterized by the boiling points and proton NMR spectra.
采用量子化学晶体轨道CNDO／2方法，在考虑了羟基代聚并苯氢键作用的基础上对其双链模型的电子结构进行系列的计算和讨论。
The electric structures of double-chain of hydroxy polyacene were studied by quantum chemistry crystal orbital CNDO/ 2 method, and considered the hydrogen-binding interaction of hydroxy-polyacene.
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