膨胀石墨对各种油类的吸附动力学

通过对吸附率(有效吸附系数)Ks和饱和吸附量msat的测量,描述了粘度为0.001 Pa·s～0.850 Pa·s的各种油类在膨胀石墨柱中的吸附动力学,发现吸附率Ks对油类粘度有很强的相关性.吸入膨胀石墨柱中的饱和吸附量msat几乎恒定在50kg/kg,该值略低于由膨胀石墨块直接浸渍在油中测得的吸附容量,这是由于所吸附的油沿膨胀石墨柱高度存在重力梯度.     

ESTIMATION OF DAILY INTAKE OF FOUR KINDS OF TRIHALOMETHANE BY JAPANESE HOUSEWIVES

Duplicate portions of the daily meals consumed by 30 housewives were collected for 3 consecutive days in the cities of Nagoya and Yokohama in Japan.
Meals were analyzed for chloroform, bromodichloromethane (BDCM), chlorodibromomethane (CDBM) and bromoform by using a purge-trap procedure. The average concentration (and the range) of these four kinds of trihalomethane in each of the 24 h duplicate meals were, chloroform 19.6±18.1 ppb(n.d.-106.8 ppb), BDCM 0.3±0.3 ppb(n.d.-1.7 ppb), CDBM 0.1±0.2 ppb(n.d.-0.6 ppb) and bromoform 0.5±1.3 ppb(n.d.-8.1 ppb).
The mean daily dietary intake of the four kinds of trihalomethane by housewives were, chloroform 40.0±25.4 μg, BDCM 0.6±0.5 μg, CDBM 0.3±0.3 μg and bromoform 0.9±1.3 μg.     

Schwarzschild microscopes in vacuum ultraviolet and soft X-ray regions

Microscopes in vacuum ultraviolet and soft X-ray regions using a normal incidence type of Schwarzschild objective are reviewed. The objective consists of a concave mirror and a convex mirror coated with a high reflectance multilayer, having a large numerical aperture comparing with other objectives. The microscopes have been used to diagnose inertia-confinement-fusion plasmas, and to investigate small samples or microstructures of inorganic and organic materials by imaging them using laboratory light sources. Synchrotron radiation has been also used to obtain a microbeam for a photoelectron scanning microscope with a spatial resolution of 0.1 μm. The structure and performance of two laboratory microscopes developed at Tohoku University are demonstrated. One of them is a soft X-ray emission imaging microscope, An image of an artificial pattern made of W and SiO2 on Si wafer by focusing Si L emission was presented, The other is an ultraviolet photoelectron scanning microscope using a He (helium) gas discharge lamp. The valence band spectra of a microcrystal of FeWO4 were presented, Furthermore other applications such as demagnifying optics for lithography and optics to gather fluorescence for emission spectroscopy are introduced.     

Chemometric Classification of L-Tryptophan Lots from Genetically Modified Bacillus amyloliquefaciens Strains

Four types of L-tryptophan lots produced by genetically modified B. myloliquefaciens strains II-V, which consisted of case-associated (11) with manifestations of EMS, control (16), and other lots (11), were compared by multivariate computer recognition programs (chemometrics) including HCA, PCA, KNN and SIMCA, as well as PLS. In HCA data analysis lots from strains III and V formed discrete clusters, and in PCA and SIMCA, both lots formed separated groups. Lots from strains II and IV were included in a group of lots from strain III. This indicated strains II and IV too were closely related to strain III. When strain vs case-associated control or other lots were compared by four methods, SIMCA provided adequate strain separation and strains were well grouped in case-associated or control lots.     

基于ISM技术的个性化Learning-map研究

本文结合注释结构模式（Interpretive Structure Modeling,ISM）构建方法,以结构化教材和个性化教学为核心,建立起了教学过程中的Learning-map,并在此基础上实现了个性化Learning-Map。最后将该成果用于E-learning系统,实现了学习的个性化和协同化,体现了和谐人机交互理念。     

High‐Voltage Power Generation on Spacecraft

Spacecraft need high‐voltage power generation for high power. However, the high voltage can cause severe discharge problem on spacecraft. This paper describes the mechanism of spacecraft charging and discharging. Mitigation methods are also mentioned.     

局部硬化区周围的应力应变特性对HAZ断裂行为的影响

从力学的观点出发，将高强钢焊接热影响区粗晶区中硬化组织ＭＡ组元视作局部硬化区（ＬＨＺ）。采用二维有限元数值方法分析了ＬＨＺ周围的应力应变分布。结果表明：ＬＨＺ存在时，ＬＨＺ内部应力升高，ＬＨＺ与基体产生变形差。这意味着ＬＨＺ内部或ＬＨＺ与基体界面容易引发裂纹。最后通过对ＴＭＣＰ钢焊接热影响区微观裂纹的实验观察，验证了本文提出的断裂模型。     

EDLC电容和电极活性炭孔型及其表面积之间的关系

研究了商用活性炭作为电极的双电层电容器在水系和有机系电解液中的电容和活性炭孔结构的关系.水系电解液采用1 mol/L的H2SO4溶液、有机系电解液采用1 mol/L的TEMA/PC溶液.结果表明:水系和有机系电解液中的电容存在线性关系.电容由活性炭微孔表面和其他大孔构成的表面两部分提供(分别称为Cmicro和Cext).其中Cmicro较小并对电流有依赖性、而Cext近似为一个常数、不随电流改变.