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Consolidation of Inorganic Precipitated Silica Gel  [PDF]
Hussein Sahabi,Matthias Kind
Polymers , 2011, DOI: 10.3390/polym3031423
Abstract: Colloidal gels are possible intermediates in the generation of highly porous particle systems. In the production process the gels are fragmented after their formation. These gel fragments compact to particles whose application-technological properties are determined by their size and porosity. In the case of precipitated silica gels, this consolidation process depends on temperature and pH, among other parameters. It is shown that these dependencies can be characterized by oedometer measurements. Originally, the oedometer test (one-dimensional compression test) stemmed from soil mechanics. It has proven to be an interesting novel examination method for gels. Quantitative data of the time-dependent shrinkage of gel samples can be obtained. The consolidation of the gels shows a characteristic dependence on the above parameters.
The Improvement of Osmotic Oedometer
渗透固结试验装置的改进

SUN Li-yun,YUE Jin-chao,LIU Zhong-yu,JIU Yong-zhi,
孙丽云
,乐金朝,刘忠玉,纠永志

实验力学 , 2010,
Abstract: Traditional oedometer was improved due to its shortage (permeability test can't be carried out on it). After improvement, the consolidation tests and permeability tests can be successively carried out to study the permeability characterics of the soil specimen under different loads. By controlling the drainage through a three-way valve, both double drainage test and single drainage test can be conducted, and not only pore water pressure at the bottom of soil specimen can be measured, but also pore water pressure on the different section can be measured respectively by the inter-connected consolidation apparatus. The improved apparatus has some merits, such as simple conformation and good watertight behavior. Comparing with traditional consolidation test and permeability test, its application to some tests gives more reasonable results. In addition, a phenomenon was found by he single drainage test, that the pore pressure from the bottom of specimen often delays.
脑部数字减影图象增强研究  [PDF]
周正东,鲍旭东,罗立民
中国图象图形学报 , 2002, DOI: 10.11834/jig.200207208
Abstract: 针对数字减影图象中,因运动引起的图象质量下降问题,提出了一种基于图象配准的数字减影图象增强算法,该算法通过选择合适的控制点和相似测度,采用快速样条插值算法以及鲍威尔优化搜索方法,并用块匹配方法对造影图象和掩膜图象进行配准,实验结果表明,配准后的减影图象质量良好,不仅具有较高的临床诊断价值,并且该算法具有较快的计算速度。
实时动态数字减影血管造影系统的研制  [PDF]
陈新,刘整,陈正挺,邹祖良
福州大学学报(自然科学版) , 1998,
Abstract: 简要介绍最新研制的实时动态数字减影血管造影系统,该系统用普通微机及数字减影图象存储处理器实现实时动态数字减影.文中对系统硬件组成、电路结构、特别是对超大容量造影图象存储处理器、蒙片图象存储器及其电路逻辑框图作了较详细的论述,同时对系统的软件功能做一简要的介绍,最后给出左心室造影的减影图象.
普及型数字减影血管造影系统  [PDF]
陈新,刘整,陈正挺,邹福良
福州大学学报(自然科学版) , 1996,
Abstract: 介绍了最近研制的普及型数字减影血管造影系统,该系统用普通微机及数字图象存储处理器实现数字减影血管造影.文中对系统的硬件组成、双帧造影图象存储处理器及其电路逻辑框图作了论述,同时对系统的软件结构与功能做简要的介绍
基于D^2PCM的数字减影图象序列无损压缩算法  [PDF]
纪震,牟轩沁,蔡元龙,蒋大宗
中国图象图形学报 , 1999, DOI: 10.11834/jig.19990467
Abstract: 充分利用数字减影(DSA)图象序列在时间域上的减影图象之间仍然存在一定的相似性,提出了一种基于二阶差分PCM(D^2PCM)的编码方式。方法在空间坐标与时间坐标上构成了一个二阶差分,能够有效地减少图象在空间以及时间域上的冗余度,从而实现对DSA序列的无损压缩,减少了存储空间与传输时间。实际应用证明该处法是稳定和实用的。
組織浸出液對於離體蟾蜍心臟搏動的影響
劉次元
科学通报 , 1951,
Abstract: 關於組織療法對於人體血壓的影響,意里潤哥夫的報告指出有73%的病人有减壓現象;27%的病人无变化,其中未發現加壓現象。我們所作关於組織浸出液對於狗血壓影響的初步觀察,也發現略有减壓現象(未發表)。鑑於心臟搏动和血壓的密切關係,为了探求减壓原因是否由於組織液對於心脏搏動的影響,我們作了下面的初步觀察。本試驗用蟾蜍的離體心臟作為觀察的對象,關於離體心臟的裝置方法大致如图一所示,手術操
組織浸出液對於離體蟾蜍心臟搏動的影響  [PDF]
劉次元
科学通报 , 1951,
Abstract: 關於組織療法對於人體血壓的影響,意里潤哥夫的報告指出有73%的病人有减壓現象;27%的病人无变化,其中未發現加壓現象。我們所作关於組織浸出液對於狗血壓影響的初步觀察,也發現略有减壓現象(未發表)。鑑於心臟搏动和血壓的密切關係,为了探求减壓原因是否由於組織液對於心脏搏動的影響,我們作了下面的初步觀察。
响叶杨(populusadenopoda)种子的形成及其寿命  [PDF]
吴琼美,樊汝汶
南京林业大学学报(自然科学版) , 1984, DOI: 10.3969/j.jssn.1000-2006.1984.01.014
Abstract: <正>用显微技术及软x射线摄影,定位观察响叶杨种子发育过程中的形态变化与胚胎发育的对应关系。根据观察、试验的结果,讨论了环境条件与种子寿命的关系;还测定了响叶杨种子寿命的变化规律及其影响因素,探索延长这种子寿命的方法。
响蜜Lie科的新记录
杨岚
动物学研究 , 1995,
Abstract: 1994年10月15日马中翼等人在云南省泸水县的老窝捕获到1只雄鸟,经中国科学院昆明动物研究所鉴定为黄腰响蜜lie,为我国鸟类科的新记录。标本保存在中国科学院昆明动物研究所鸟类标本室。科的特征体形较小。嘴形似雀,短而粗实,上嘴稍弯曲;尾羽12枚;翅形长而尖,仅具9枚初级飞羽;脚呈对趾型,第2、3趾向前,第1、4趾向后,似啄木鸟。
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