查询词典 porous

Reflecting layer is composed of TiO2 large nano-particles with mean grain size of 250nm or 150nm prepared using organic alkali tetramethylammonium hydroxide as peptizer. Nano-crystalline TiO2 porous thin film composed of small nanocrystalline (10~20nm) was used as a substrate layer to absorb large amount of dye molecules.

用有机碱四甲基氢氧化铵做胶化剂制备的两种大粒径纳晶TiO2（粒径为250nm和150nm），用它们分别制备薄膜做为反射层；用小粒径纳晶TiO2(10~20nm)来制备的纳晶多孔薄膜为底层膜，用于吸收大量的染料。

The target of this project is to design and synthesize novel metal phosphonate compounds with porous structures and to study their chemical and physical properties.

金属有机膦酸化合物作为潜在的离子交换材料、选择性催化剂和传感器等而引起了人们极大的兴趣，本项目的目标是设计合成新的有机膦酸多孔化合物，并进一步研究其化学和物理性质。

Keywords: porous coordination compounds; metal; phosphonate; self-assembly; magnetic property

中文关键词：多孔配合物；金属；有机膦酸；自组装；磁性

Photoluminescent porous silicon was prepared by electrochemical dissolution of silicon wafer in HF solution.

在本文的第一章中，对当前多孔硅研究领域的研究成果进行了综述。

Pillaring reaction has been well known as one of the significant methods to prepar porous materials and inorganic-organic nanocomposites.

粘土矿物的柱撑反应是制备孔材料、有机一无机纳米复合层状材料的有效方法之一。

Pillaring reaction has been well known as one of the significant methods to prepar porous materials and inorganic-organic nanocomposites.

粘土矿物的柱撑反应是制备孔材料、有机-无机纳米复合层状材料的有效方法之一。

Based on the above experiments, the author studied the mixed metallic pillared and modified montmorillonites. The experimental result indicated that the microporous structure of Fe-Al-PLMs was affected by the changing of interlayer Fe-Al polymer with different Fe/Al ratio. But the presence of Al iron was helpful to incorporate Fe iron into interlayer of montmorillonites.. Introducing Zr helped Al-PLMs getting better larger spacing, thermal stability, surface area and pore volumes. Its successful to apply Zr-Al-PLMs to treat wastewater containing Cr iron. The experiment of modifying Al-PLMs by PVA showed that the order of adding starting materials (Al-pillaring solution, PVA, montmorillonite solution) was related to the property of Al-PLMs. The PVA as precursor was beneficial for Al to go into interlayer of the clay and to form larger basal spacing porous clay. The surface area and pore volumes of Al-PLMs increased mainly because of increasing the external surface area and mesoporous volumes after acid-activating. This conclusion confirmed that the microporous structure of pillaring clay depends upon the interlayer pillar.

实验结果表明：在Al-PLMs中引入Fe离子，不同Fe／Al比制得的Fe-Al-PLMs因层间的Fe-Al聚合离子结构不同而影响其微孔结构，但羟基Al离子的存在有利于Fe离子进入蒙脱石层间；在Al-PLMs中引入Zr离子，有助于其层间距、比表面积、孔体积增大，所得Zr-Al-PLMs应用于含Cr废水处理效果显著；PVA改性后的Al-PLMs其物化性质变化与铝柱化剂、PVA溶液、蒙脱石溶液三者不同添加顺序有关，说明PVA的前撑有利于Al进入蒙脱石层间得到较大层间距的Al-PLMs；经酸化处理得Al-acid-PLMs，其比表面积增大以外表面积为主，孔体积增大以中孔为主，这也证实了柱撑蒙脱石的微孔结构取决于其层间的柱化物。

As a novel porous material, pillared montmorillonite is one of hotspots for mineral material research. Because of its big surface-to-volume ratio, variable apertures and strong acidity, PILM can be used as an excellent adsorbent and catalyst in petrochemical and environmental protection fields, and catch many scientists attention in recent years.

柱撑蒙脱石作为一种新型的多孔材料是当前矿物材料学研究的热点之一，因其具有大的比表面积、大小可调的孔径、较强的酸性而成为性能优异的吸附剂和催化剂，在石油化工和环保领域具有广阔的应用前景，近年来成为国内外广泛关注和研究的热点。

The human cartilages are composed of chondrocyte and extracellular matrix , the form of chondrocytes are hypertrophy and the quantity are less; the ECM of cartilage are compised of type Ⅱ collagen and proteoglycan. Articular cartilages are all hyaline with little fibers. Trauma and arthritis are the main cause of cartilage injury, the ommilayer injury ofcartilage can be recovered by marrow, but because of without stimulation mechanism, the new tissues are merely fibrocartilages, they can not be coincide with hyaline cartilage in menchanics; the purely damage of articular cartilage can not stimulate chondrocyte to regenerate because of without blood circulation, thus, the plerosis of articular catilage can not depend on the proliferation of local chondrocyte. Ever since, people tried their best to find a way to reconstruct articular cartilage.

中文题名人骨髓基质干细胞成软骨诱导及多孔复合材料作为细胞载体的体外实验研究副题名外文题名 Cartilage induction of human mesenchymal stem cells and experiment on compound porous materials as cells' scaffold in vitro 论文作者刘晓岚导师周江南学科专业外科学研究领域\研究方向学位级别博士学位授予单位中南大学学位授予日期2003 论文页码总数68页关键词骨组织工程软骨细胞骨髓基质干细胞壳聚糖高分子外消旋聚乳酸馆藏号BSLW /2003 /R68 /10 造成人体关节软骨损伤的原因主要为创伤和关节炎，关节软骨全层损伤可由于骨髓中间充质干细胞的高速增殖修复，但这种修复由于缺乏相应的刺激机制，只能形成纤维软骨，而不能形成符合关节生理、力学要求的透明软骨；单纯软骨部分损伤软骨组织内无血管，软骨细胞迁移迟缓，无法使损伤区域软骨细胞再生，因此，关节炎及关节创伤后的软骨修复不能依赖于软骨细胞的增殖和迁移。

Macro-porous-type and non-polar adsorption resin AKS-W is an ideal adsorbent for the extraction of the effective components in Plumula Nelumbinis.

结论大孔型非极性吸附树脂AKS-W对莲子心中有效成分是一种较为理想的分离介质。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。