壳的

The solubility in general organic solvents, oleic acid and lipin of both derivatives were also studied. In order to find out the solubilities in general organic solvents, PhCS that had satisfied solubility in DMF, DMAC and DMSO and EHCS that was amphiphilic were prepared.

为考察壳聚糖衍生物在通用有机溶剂中溶解性问题，我们制备出了在DMF、DMAC、DMSO等通用有机溶剂中溶解性很好的邻苯二甲酰化壳聚糖以及水油两亲性的乙醚胺壳聚糖。

It also widespread exists in the pericellular membrane of some fungus,insects,and algae,and in the cell walls of the advanced plant.The chitosan is the result of chitosan's dis-ethanoyl.

通过将甲壳素脱乙酰化可制得壳聚糖，壳聚糖是天然糖中唯一大量存在的碱性氨基多糖，其降解产物低分子量壳聚糖更是具有许多特殊的物理化学性质和生理功能。

The hydrophobic core serves as a reservoir for water-insoluble drugs.Hence,these nanoparticles can be used as carriers for hydrophobic drugs.For the synthesis of cholesterol-modified glycol chitosan conjugates,a carboxyl group was initially introduced to cholesterol molecule using succinic anhydride,and then covalently coupled with the primary amino group of glycol chitosan in the presence of 1-ethyl-3-(3-dimethylaminopropyl)-carbodiimide hydrochloride and N-hydroxyl succinimide.

本文采用二步反应将胆固醇接枝到乙二醇壳聚糖，首先将胆固醇进行羧基化，将胆固醇与琥珀酸酐反应生成胆固醇半琥珀酸酯，然后用1-乙基-3-(3-二甲基氨丙基)碳二亚胺盐酸盐与N-羟基琥珀酰亚胺作为偶联剂，将胆固醇半琥珀酸酯的羧基与乙二醇壳聚糖主链的氨基进行反应，得到胆固醇疏水改性乙二醇壳聚糖共聚物。

Preparation activated carbon from the charring coconut shell with the water as active agent by simultaneous measurements of thermogravimetry and differential thermal analysis was studied.

以椰壳炭为原料，水为活化剂，利用同步热重/差热分析仪对椰壳炭活化的机理、反应热效应以及微波辐照对微波椰壳活性炭制备的影响进行了探讨。

Plate cone reticulated shells are a new type of space structures.

引 言板锥网壳结构是一种半连续化、半格构化的新型空间结构，它是由板片组成锥体单元，按空间网壳结构的曲面形状，将锥体单元通过底边拼接成整体，各锥顶再用杆件有规律地相互连接，以形成板锥网壳结构体系。

Crude solution of chitosanase is obtained by fungal fermented filtrates firstly, and then through affinity adsorption by cross - linked chitosan resin, with no protein flowing by suffer, and then through eluting by 1-5per mill Cu2 . After that, eluent is dialysed and concentrated and then separated by gel filtration chromatography.

将产壳聚糖酶真菌发酵液离心得粗酶液，经交联壳聚糖树脂亲和吸附，用缓冲液洗至无蛋白流出，再以1-5‰的Cu 2 洗脱，洗脱液透析浓缩后用凝胶过滤层析进行分离，获得电泳纯的壳聚糖酶。

It can be used to make artificial dialysers,artificial skins,oral ulcer membranes,and periodontal tissue GTR membranes and drug membranes.

为对医药领域开发和研制壳聚糖膜提供一些借鉴，综述了壳聚糖膜可以应用于医药领域的优良性能：易降解性、生物相容性、促创伤愈合性、抗菌性和药物缓释性；以及壳聚糖膜剂的一些医药用途，有人工肾膜、人工皮肤、口腔溃疡膜、牙周 GTR膜、不同给药途径药膜等。

Results: In the 13 cases, the CT diagnosis show that five cases of low-density lesions of Bilateral hepatolenticular, five cases of globus pallidus, one case of Bilateral hepatolenticular with corpus callosum, one cases of External capsule putamen, one case of Putamen with the caudate nucleus, three cases of low-density of Bilateral lobi frontalis and lobi parietalis, one case of unilateral putamen hemorrhage, three cases of cerebral atrophy.

目的 探讨双侧基底节区对称性低密度病变的CT诊断价值。方法回顾性分析肝豆状核变性5例、中毒性病变5例、Wernicke脑病2例、Huntington氏大舞蹈病1例的CT平扫表现及临床意义。结果 13例中，CT示双侧豆状核低密度5例、苍白球5例、双侧豆状核伴胼胝体1例、壳核伴外囊1例、壳核伴尾状核1例；双额顶叶低密度3例、单侧壳核出血1例、大脑萎缩3例。

The intermediate frequency elbow piece formation technology basic technological process is: First welds a lateral section is the polygon many leng link shell or both sides seal many leng fan-shaped shells, after the interior flushes the full pressure medium, the serve intrinsic pressure, under the intrinsic pressure function the lateral section by the polygon gradually changes a full circle, ends in a circular link shell.

中频弯管成型技术基本工艺过程是：首先焊接一个横截面为多边形的多棱环壳或两端封闭的多棱扇形壳，内部冲满压力介质后，施以内压，在内压作用下横截面由多边形逐渐变成圆，最终成为一个圆形环壳。

The test results were then independently reviewed by the Society of Automotive Engineers and published as an SAE paper, before the formula was finalised and finally released to petrol stations as New Shell Unleaded, Shell Unleaded 95 and Shell Premium Unleaded petrols.

测试结果，发表在独立审查的汽车工程师学会和一个汽车工程师学会发表论文，在公式最后定稿之前，公布在加油站的无铅新壳牌，壳牌无铅95和壳牌高级无铅汽油

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。