Studies on suspension and emulsion. LIV. Shrinkage of polymer emulsion film having asymmetric porous structure

It was found that the film cast on a glass plate from emulsifier-free ethyl acrylate–methyl methacrylate copolymer emulsion when separated from there shrank and curled immediately. This film had an “asymmetric” porous structure. It was discussed the relationship between the porous structure and the shrinkage due to the residual internal stress produced during film formation.     

Stabilization of a new antiulcer drug (Lansoprazole) in the solid dosage forms

In the previous study, we clarified that enteric granules were appropriate dosage forms of lansoprazole. The establishment of these formulations, however, was difficult because some of the excipients needed for these formulations are incompatible with the drug. We examined the effects of adding magnesium carbonate as an alkaline stabilizer and could get stable enteric granules. We also discuss the mechanism of stabilization.     

基于三维力学模型的大范围自然边坡稳定性概率评价方法

 为了对大范围自然边坡的滑坡危险度进行评价,利用GIS技术作为平台,把传统的三维极限平衡力学模型耦合到概率统计分析框架中,提出一个基于边坡单元的定量评价的新方法。在把大面积的研究区域划分为边坡单元后,采用一个基于GIS的三维力学模型计算每个边坡单元三维安全系数的分布。假定此分布遵从对数正态分布,再采用一个可靠性指标计算该分布中小于某临界值的概率,并以此来定量评价该边坡单元的整体滑坡危险度。此方法同时也可以求得各边坡单元的最危险滑动面的位置和规模。开发一个专业GIS系统来完成所有的计算分析步骤,本系统能够快速、高效地完成大量的三维建模与安全系数计算,综合了三维力学模型与概率统计方法的优点,实现了对地形地质条件复杂多变的大范围自然边坡的稳定性定量评价。通过对日本一国道边坡应用对本方法的有效性进行了验证。     

Premartensitic anelasticity in indium-thallium alloys

The linear and nonlinear low frequency internal friction of In-24 at. pct T1 displays a Curie-Weiss type behavior in the temperature range above the transformation temperature. The critical temperature equals the martensite start temperature. It is proposed that the origin of the observed internal friction is the diffusion controlled interaction of substitutional atoms with the premartensitic strain modulation, tweed. This paper is based on a presentation made in the symposium “Pretransformation Behavior Related to Displacive Transformations in Alloys” presented at the 1986 annual AIME meeting in New Orleans, March 2–6, 1986, under the auspices of the ASM-MSD Structures Committee.     

Genome mapping and gene analysis of Antheraea pernyi nucleopolyhedrovirus for improvement of baculovirus expression vector system

We have constructed a genome DNA map of the Antheraea pernyi nucleopolyhedrovirus (AnpeNPV) and used it to identify target genes for deletion in order to improve the newly developed baculovirus expression vector system. Initially, 50 independent PstI fragments of viral DNA were obtained by shotgun cloning, and both termini of each cloned fragment were sequenced. Then, the sequence data were used for homology search against both nucleotide and amino acid sequences of other NPVs in databases. This homology search allowed us to construct a nearly complete restriction map of a viral DNA with several assumed gaps. Four additional PstI fragments covering the gaps were obtained by PCR amplification, and a complete map of a circular viral DNA, which consisted of 54 PstI fragments, was constructed. The map indicated that the AnpeNPV genome is approximately 130.2 kbp in size and possesses high similarity to the Orgyia pseudotsugata multicapsid NPV (OpMNPV) genome in both sequence and arrangement of genes. Utilizing the genome-wide high similarity between AnpeNPV and OpMNPV, we identified two target genes on the map, namely, cathepsin and chitinase genes, whose products have been proved to be involved in the degradation of recombinant proteins and the liquefaction of virus-infected insect tissues. Comparative sequence analysis of the map also revealed the lack of certain OpMNPV open reading frame (ORF) homologs and the presence of ORFs, whose homologs do not exist in OpMNPV but in other group I NPVs, providing an insight into the position of AnpeNPV in the baculovirus phylogeny.     

Perception of complex geometric figures in chimpanzees (Pan troglodytes) and humans (Homo sapiens): Analyses of visual similarity on the basis of choice reaction time.

In a conditional-discrimination task (matching-to-sample), assessed similarities among figures consisting of 2 elemental figures through the choice reaction time (RT), nonmetric multidimensional scaling, and hierarchical cluster analysis of data from chimpanzees (Pan troglodytes) and humans (Homo sapiens). Humans also rated similarities among figures. The results of the 3 experiments clearly indicated that the RT data obtained from chimpanzees' performances were useful measures of the similarities among figures. The results suggested that chimpanzees and humans perceived the complex figures similarly. The outer-contour elements were perceived most dominantly by both species, and the straight-line elements were perceived least dominantly. Both species showed the same perceptual hierarchy or dominance among perceptual categories, as determined by the similarity of simple elements, on the basis of transformational invariances. (PsycINFO Database Record (c) 2010 APA, all rights reserved)