基于CapsNet的汉字字形表征模型

提出基于胶囊神经网络(CapsNet)的汉字字形表征模型,通过表征汉字字形中的部件实现汉字字形的表征.首先,对任一汉字字形生成所有部件类别的表征向量.然后,根据部件存在概率,利用基于欧氏距离的离群点检测,选取相应的部件表征向量.最后,由选出的部件表征向量组成该汉字的字形表征.实验表明,文中模型在仅经过部件字形训练的情况下,即可有效识别汉字部件,同时自动生成汉字字形的有效表征.     

紫外分光光度法测定刺五加总苷总黄酮软胶囊中总苷含量

建立紫外分光光度法测定刺五加总苷总黄酮软胶囊中总苷含量;方法:以总苷为对照品,在波长265nm处测定刺五加总苷总黄酮软胶囊中总苷含量。结果:用紫丁香苷做对照品,其线性范围20.56～102.8μg/ml,r=0.9995,其平均回收率为98.92%,加样回收率为1.5%(n=5)。结论:该方法灵敏度高,重复性好,简单,准确,是一种测定刺五加总苷总黄酮软胶囊中总苷含量的有效方法。     

Synthesis and optical properties of dyes encapsulated in gold hollow nanoshells

Gold nanomaterials are promising objects for applications in optics and medicine because of their unique properties related to the Surface Plasmon Resonances (SPR) phenomena. It is possible to tune these properties with the control of the size and shape of the nanomaterials. Gold hollow spheres nanomaterials are an interesting concept for encapsulation of either dyes or drugs. The study of their properties and their behavior in a bio-environment still remains scarce and some phenomena are still to be explained in particular regarding local field enhancement effect or quenching of their photophysical properties. In this work we describe a process allowing inclusion of optical dyes in gold nanoshells and evaluate the optical properties.     

Preparation and analysis of high capacity polysulfone capsules

Since the concept of solvent impregnated resins was introduced in the early 1980s, the technique has been applied to a limited amount of applications. The main disadvantage of the resins was that the amount of solvent inside was limited to approximately 1.5 ml/g polymer. A new generation of solvent impregnated resins is introduced. These capsules can contain up to 11.8 ml solvent/g polymer and were prepared using a modified dry impregnation technique. Due to the high solvent loading, the capacity per volume of capsule for extracting products from aqueous phases is therefore dramatically increased.     

White and narrow band image compressor based on a new color space for capsule endoscopy

In this paper, we present the design of a low power and hardware efficient image compressor integrated circuit for wireless capsule endoscopy application. The proposed compression algorithm supports dual-band imaging, that is, works on both white-band imaging (WBI) and narrow-band imaging (NBI). The scheme uses a novel color-space and simple predictive coding for optimized performance. Based on the nature of the narrow- and white-band endoscopic images and video sequences, several sub-sampling schemes are introduced. The proposed dual-band compressor is designed in such as way that it can easily be interfaced with any commercial low power image sensor that outputs RGB image pixels in a raster scan fashion, eliminating the need of large buffer memory and temporary storage. Both NBI and WBI reconstructed images have been verified by medical doctors for acceptability. Compared to other designs targeted to video capsule endoscopy, the proposed algorithm performs strongly with a compression ratio of 80.4% (for WBI) and 79.2% (for NBI), and a high reconstruction peak-signal-to-noise-ratio (over 43.7 dB for both bands). The results of the fabricated chip are also presented.     

体内胶囊式药物释放微机电系统机构设计研究

提出一种新型的胶囊式药物释放微机电系统的设计模型。该系统以实现药物在人体内定时、定位释放为主要目的。探讨该系统的机构和控制电路设计中的一些关键技术和难点。     

摩罗胶囊质量标准的研究

目的建市摩罗胶囊的质量标准.方法用薄层色谱法鉴别处方中的玄参、麦冬、延胡索;用高效液相法测定制剂中芍药苷的含量.结果薄层色谱专属性强,芍药苷的线性范围为21.14～107.2 μg/mL,r=0.999 8,平均加样回收率96.19%,RSD 0.45%.结论该方法简便,准确,重复性好,可作为摩罗胶囊质量控制的标准.     

亚麻籽油中药软胶囊的急性毒性试验和遗传毒性试验研究

通过亚麻籽油与中药天然产物复配得到了一种具有缓解视疲劳作用的软胶囊,并对该样品进行了急性毒性试验和遗传毒性试验研究。结果表明,急性毒性试验中,最大灌胃剂量高达17.3g/kgBW;Ames试验、小鼠骨髓细胞微核试验和精子畸形试验结果均为阴性。因此,亚麻籽油中药软胶囊属无毒级,无致突变作用。     

亚麻籽油中药软胶囊的30天大鼠喂养试验研究

通过亚麻籽油与中药天然产物复配得到了一种具有缓解视疲劳作用的软胶囊。为了评价该软胶囊的安全性,对该样品进行30d大鼠喂养试验。试验结果显示,各试验组大鼠体重、进食量、食物利用率、血常规、脏体比及病理组织学观察等各项指标与阴性对照均无显著性差异。因此亚麻籽油中药软胶囊属无毒级,可开发成为高附加值保健食品。     

内窥镜仿生机器人的研究现状与发展

论述国外内窥镜机器人系统的研究现状和成果,分别对自主内窥镜机器人系统、超微内窥镜机器人系统、胶囊内窥镜机器人系统、虚拟内镜技术和医用导管的应用研究进行了阐述,指出了内窥镜仿生机器人研究的重要意义和未来发展方向.