树枝状结构

Since 1980 the river net pattern began to show typical features of artificial river system with straight watercourse, low curvilinearity.

近百年来扬中的渠网系统发生了显著变化。1935年和1958年河港为近于自然树枝状水系。1980后河港格局表现出典型的人工水系特征，到1994年河港数量和长度明显增加，网络的结构趋于复杂，河港网络趋于完善，但城镇及其附近的渠道和池塘逐渐减少。

Polymerization of a phenylacetylene monomer bearing a dendron moiety was carried out by using a rhodium complex Rh[Cl2]2 as catalyst. The structure of the resultant was characterized with infrared, nuclear magnetic resonance, and UV-visible absorption spectroscopic techniques; the experimental data confirmed the generation of the expected polyphenylacetylene derivative (P1) with dendron pendants.

本文合成了带树枝状聚苯甲醚修饰基团的苯乙炔单体，在Rh[Cl2]2催化剂的作用下得到了侧链带聚苯甲醚树枝的新型聚苯乙炔衍生物，用红外吸收光谱、核磁共振谱、紫外可见吸收光谱和凝胶渗透色谱表征了聚合物的结构。

AITL, diagnosed based on lymph-node biopsy, was characterized by damage to normal structure of lymphonodus, proliferation of immunoblastic cells, and arborescent supervascularization. Immunophenotypes were observed in mature peripheral T-cell lymphoma. CVP regimen was the most commonly used chemotherapy. Fifty-eight percent of patients had a good initial response to chemotherapy. The 3-year survival rate was 25%, with a median survival time of 20 months.

确诊依据淋巴结活检，病理组织学呈淋巴结结构破坏，免疫母细胞增生，树枝状血管增生的特点，免疫表型全部为成熟外周T细胞性。12例均用CVP为主的方案化疗，总有效率58%。3年生存率为25%，全组中位生存20个月。

At high heat flux, due to the larger pores in the porous structure, the biporous surface really prolongs the critical heat flux to 869 kW/m2, which is about 2.2 and 1.3 times over a smooth and monoporous surface, respectively.

单孔径毛细结构性能提升的原因在於树枝状粉末拥有较广大的热传面积及通道，能够加速薄液膜的蒸发速率。

Template-confined growth is a very powerful method for obtaining aligned 1D nanomaterials with adjustable diameter, length and morphology. Porous anodic aluminum oxide templates with different channel structures have been synthesized in our lab, with which the aligned CNT arrays, Y-branching and novel dendriform CNTs have been obtained. Based on the structural characterization of the products, a space-limited and self-catalytic growth mechanism has been proposed accordingly. Roughly speaking, the catalyst particles at the bottom of template channels initiate the nucleation of carbon species, which acts as the seed for subsequent CNT growth.

本文采用近年发展起来的模板控制生长法，以多孔氧化铝模板控制CVD生长的方法调控了碳纳米管有序阵列、γ-分叉及树枝状分叉结构，在对产物进行详尽结构表征和分析的基础上阐述了氧化铝模板控制生长碳纳米管的生长机制：孔道内催化剂仅在生长初始阶段催化碳物种的成核，起&种子&作用，随后模板孔道自身的催化及限域作用使碳纳米管紧贴着孔道内壁生长。

The first and second generation of dendritic polyesters have been prepared by divergent synthetic ways using trimethylopropame as core and o-phthalic anhydride, glycidol as branched units.

以三羟甲基丙烷为核，邻苯二甲酸酐，环氧丙醇为支化结构单元，合成了第一及第二代树枝状聚酯。

With two methods, plate cultivation and the novel semi-solid in situ cultivation method, strains belong to Family Leptothrix were isolated. XRF showed that the amorphous iron and manganese were two major metal elements of the precipitation formed by one strain of Leptothrix spp..

研究发现，铁细菌2号培养基为合适的分离培养基；采用平板涂布法分离出的2株氧化铁和锰的细菌，经系统发育地位的分析确定为纤发菌属；对运动纤发菌的产物分析确定无定形铁和锰为其主要金属元素；形态观察确定霍氏纤发菌呈树枝状鞘结构，而运动纤发菌呈蛛网状鞘结构。

An LC dendrimer having novel structure characteristic was given, which has metal coordination bond and mesomorphic moiety.

给出一种具有新的结构特点的液晶性树枝状大分子，它兼有配位金属和介晶基元。

It is very suitable for pentaerythritol derivatives to be applied to synthesize new glycocluster and glycodendrimer because of their special structural characters.

由于季戊四醇衍生物本身所具备的结构特点，这类分子非常适合于合成新型的糖簇分子和糖树枝状分子。

Dendrimers or dendrons are ideal preorganized scaffolds for constructing novel liquid crystalline materials thanks to their perfect topologic structure and abundant reactive groups on the periphery.

树枝状大分子或树枝体由于其完美的拓扑结构和周边表面大量反应性的端基，成为一类理想的用于构筑结构新颖的大分子液晶材料的预组织骨架结构。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。