テレメーター法による長距離走トレーニング強度の研究

In order to predict the training intensity in long distance running, the percent of maximum oxygen uptake in daily training was estimated from heart rate response which was measured by means of telemetering. Four male distance runners participated in this experiment. These results were summarized as follows ; 1) In order to clarify the difference between directly measured VO_2 max and that predicted from heart rate, oxygen uptake and heart rate were measured simultaneously in treadmill running which produced the same pattern as the daily training program. The differences of % of VO_2 max predicted from heart rate and measured directly were about 10% 2) The training intensity was evaluated by % of VO_2max which was predicted from the variation of heart rate in long distance running. The training intensity in 6, 000m continuous running was equivalent to 70～85% of VO_2max. In intermittent run ning, which consisted of 1, 000m run seven times and 3, 000m run five times, it indicated 90～100% of VO_2max. 3) There were rectilinear relationships between running speed and percent of maximum oxygen uptake. The regretion equation was different for each athlete. At a given running speed the large difference of % of VO_2max btween individuals was observed

Chromatography of Mechanically-Interlocked Molecular Compounds

Catenanes and rotaxanes are molecules composed of mechanically interlocked components which are not linked to each other by covalent bonds, These molecular assemblies behave as discrete molecules with defined properties significantly different from those of the parent ''free'' components. High-performance liquid chromatography has been employed successfully to characterize some tetracationic catenanes and rotaxanes incorporating either cyclobis(paraquat-p-phenylene) or cyclobis(paraquat-4,4'-biphenylene) as the charged components and either hydroquinone-containing macrocycles or dumbbell-shaped entities as the neutral components. in each case, significant differences in the retention times of the mechanically interlocked molecular compounds, in comparison with those of their components as their ''free'' forms, were observed

Chromatography of Mechanically Interlocked Molecular Compounds

Catenanes and rotaxanes are molecules composed of mechanically interlocked components which are not linked to each other by covalent bonds. These molecular assemblies behave as discrete molecules with defined properties significantly different from those of the parent “free” components. High-performance liquid chromatography has been employed successfully to characterize some tetracationic catenanes and rotaxanes incorporating either cyclobis(paraquat-p-phenylene) or cyclobis(paraquat-4,4‘-biphenylene) as the charged components and either hydroquinone-containing macrocycles or dumbbell-shaped entities as the neutral components. In each case, significant differences in the retention times of the mechanically interlocked molecular compounds, in comparison with those of their components as their “free” forms, were observed

Facile Fabrication and Magnetic Properties of a One-Dimensional Magnetite Peapod in a Lipid Nanotube

Magnetite nanoclusters (MNCs) were aligned one-dimensionally in the hollow cavity of a lipid nanotube (LNT) as a peapod using a simple mixing method in an aqueous solution. The electrostatic interaction of the two materials was considerable enough to allow the preparation of a densely packed MNC-LNT peapod composite. The composite was formed at a pH 5.4–6.8, i.e., near the isoelectric point of the MNCs. At a pH 5.4–6.8, there was neither a strong attractive nor repulsive electrostatic interaction between the surface of the MNC and the LNT. The MNCs-capped LNT composites were formed at basic conditions (above a pH 7.8) in which the MNCs and the LNT pushed each other because of their opposite surface charges. The magnetic property measurement revealed that the 1D aligned MNCs in the peapod structure had a much higher coercivity (10.6 Oe) than the bulk randomized MNCs (5.8 Oe)

Lipid Nanotube Encapsulating Method in Low-Energy Scanning Transmission Electron Microscopy Analyses

International audienceThe lipid nanotube (LNT) encapsulating method is a rational sample fixation method that can be used to mount samples for transmission electron microscopy analyses. By employing the LNT encapsulating method in 30 kV low-voltage scanning transmission electron microscopy (LV-STEM), it is possible to record multiangle images of ferritin without using the negative staining method. We have also recorded a tilted series of high-contrast LV-STEM images and reconstructed three-dimensional images. These results show that LNTs have sufficient durability for LV electron beam, and indicate the potential of the LNT encapsulating method as a sample fixation method of LV electron microscopy