Background: Sleep disorder is a common health problem in modern days. Estab-lishment of safe, non-invasive, convenient and effective treatment is anticipated in the field of complementary and alternative medicine.Objective: We designed a protocol for a randomized controlled trial to investigate the effect of Electric Field (EF) exposure on sleep disorder.Methods: Nineteen college students with sleep disorder, defined as a score of 8 or higher on the Pitzburg Sleep Quality Index, were divided into two groups; EF intervention and sham treatment. EF exposure (50-Hz, 18 kV) was performed for 30 minutes a day for five con-secutive days. Subjective parameters were obtained by an OSA sleep inventory MA version consisting of five factors, and objective parameters were measured using a sleep-scan.Results: Significant improvement in scores of three factors (sleepiness on rising, refreshing and sleep length) was observed after 5 days of EF exposure intervention, as compared to both before intervention and after 5 days of sham treatment. Moreover, improvement rati-os for these three factors were significantly higher in the EF group than in the sham treat-ment group. Analysis of the sleep-scan demonstrated a high improvement ratio for duration of nocturnal awakening in the EF group.Conclusion: The beneficial effect of electric field therapy on sleep disorder in college stu-dents is considered to be beyond a placebo effect. This study raises the therapeutic possibil-ity of electric field exposure.
ABSTRACT:In present the unmanned construction system technology is adapted on initial operation against of the disaster occasion. For instance it has been used in Unzen.It depends on the scale and site situation of disaster which system should be applied to.A lot of remote control technology of operating construction machinery has been developed as that technology.Underwater bulldozer was developed in 1968、which is a start of the technology.Recently the remote control technology has been applied to restoration works for digging、loading and transportation after the eruption of Unzen.The present study verifies it concerning the operativeness of a remote system that offers the site information by the monitor and operates it.In the research, it has aimed at the operativeness improvement, the working efficiency improvement、and the tiredness decrease. Arrangement and the operation of the monitor are researched now. Moreover, we do the examination for the system improvement in the future.In this report, the operation experimentation of 'Remote control in the site 'and' Remote control systems that displayed the monitor and operated the site information' (two kinds of systems) was done.And, it is the one that the ability and the behavior pattern that recognized the space of the operator were verified.
This paper describes design and construction of geosynthetics multi-liner system in a controlled sea-based disposal site constructed on the permeable ground. In design of the liner system to resist uplift pressure, the external forces due to ocean wave and tidal effect were evaluated by model tests and numerical analyses. The liners were sank and placed to the slope and bottom of the disposal site. The effective execution methods were to bond three layers of a sheet and mats and to joint them as wide and long as possible in the yard on land.
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