Nippon Eiseigaku Zasshi (Japanese Journal of Hygiene)
Online ISSN : 1882-6482
Print ISSN : 0021-5082
ISSN-L : 0021-5082
Volume 21, Issue 2
Displaying 1-5 of 5 articles from this issue
  • Part 2. Changes in the activities of alkaline, and acid phosphatase
    Kazuyoshi Nakao
    1966 Volume 21 Issue 2 Pages 49-53
    Published: June 10, 1966
    Released on J-STAGE: February 17, 2009
    JOURNAL FREE ACCESS
    Studies on alkaline and acid phosphatase activities in male rabbit brains were carried out under different physical conditions. The environmental conditions used were similar in the previous report. After the animals were killed by air puncture, the brain was removed and separated rapidly into 7 parts; telencephalon, diencephalon, the upper and lower part of mesencephalon, cerebellum, pons and medulla oblongata. The each part of brain was ground in ice-cold water solution by glass-homogenizer.
    The phosphatase activity was determined by KING and ARNSTRONG's method, modified by SHIBATA. The following results were obtained.
    Alkaline phosphatase activity was increased significantly in each part of rabbit brain under the noisy, cold and immobilized condition in comparison with controls. The increasing value under the cold and immobilized condition was higher than that of noisy condition.
    Acid phosphatase activity was increased significantly in each part of brain under the cold condition, in the part of brain except pons and medulla oblongata under the immobilized condition and in telencephalon and medulla oblongata under the noisy condition.
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  • Especially relation of the humidity to the sultriness
    Sadao Ushikusa
    1966 Volume 21 Issue 2 Pages 54-78
    Published: June 10, 1966
    Released on J-STAGE: February 17, 2009
    JOURNAL FREE ACCESS
    Physiological responses to the variation of the air temperature and humidity of clothed subjects sitting in a room conditioned with an insensible air current (0.2m/sec.) were observed.
    In summer, the variation of the air humidity scarcely influenced on the physiological responses, when the air temperature was below 26°C. But when it exceeded 26°C, the difference of the responses owing to the variation of humidity became evidently. At first, the electrical resistance of the skin increased markedly and then rates of pulse and respiration began to increase in the air of high humidity. The blood pressure and the rectal temperature were affected with high humidity, when the air temperature exceeded 30°C. Significant difference of thermal sensation owing to the variation of the humidity was shown in the air temperature above 26°C. And the sultrinees was felt in the range of air temperature and relative humidity over the curve on a graph which connected points corresponding to 26°C with 95 per cent, 28°C with 80 per cent and 30°C with 60 per cent. When the humidity was 35 per cent, the sultriness was not felt till the air temperature reached 36°C.
    In winter, the air temperature, in which the air humidity effeted on the physiological responses was lower about 2-4°C than that in summer.
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  • Fumio Nakagawa
    1966 Volume 21 Issue 2 Pages 79-85
    Published: June 10, 1966
    Released on J-STAGE: February 17, 2009
    JOURNAL FREE ACCESS
    The modification of Moore's (1951) and Dobb's (1963) methods for the chemical oxygen demand in waste water is described.
    It develops the advantage of some rapidity of reaction velocity and the smaller quantitative samples and yields equally good or somewhat better results for the various kind of pure organic solution.
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  • Part 2. The measurement methodology
    Yoshinori Ohyama
    1966 Volume 21 Issue 2 Pages 86-93
    Published: June 10, 1966
    Released on J-STAGE: February 17, 2009
    JOURNAL FREE ACCESS
    Beforehand, in the measurement of flexibility, part 1, Japanese Journal of Hygiene, Vol.20, NO.2, 1965, the author investigated the distance-method and angular-method analytically, and studied comparatively on the factors that influence both measures obtained by distance-method and angular-method.
    In this study, the angular-method is compared with the distance-method in reliability using the analysis of variance and also the objectivity of angular-method is investigated. Furthermore, the valid number of repetition of measurement, accepting measure and measurement error are investigated. Therefore, the author reports the findings through these investigations.
    1) For reliability, the angular-method held R=.8943 and the distance-method R=.7948, where R stands for reliability coefficient. Then, it can be said that the angular-method is more reliable than the distance-method.
    2) The investigations on objectivity of Trunk flexion, Extension, Sideward bend measurements concluded that the variance due to different testers was not significant. Therefore, it can be concluded that their objectivities are satisfactory.
    3) With both angular and distance-method, the dispersion of measure due to ten repetitions of measurement is significant at the significant level, .01 and .05.
    4) The dispersion of measure due to not more than five repetitions of measurement, for angular-method, and the one of measure due to not more than three repetitions of measurement, for distance-method come to be not significant. That is, the dispersion of measure due to more than five repetitions, for angular-method, and more than three repetitions, for distance-method, was found significant. Then, the valid number of repetition of measurement was found out.
    5) For the angular-method, correlations between the mean of five-times-repeated measurements and mean, maximum, minimum, first measure which are taken from three-times-repeated measurements were computed. They were found considerably high; r=.9981, r=.9925, r=.9803 and r=.9871, respectively.
    6) Furthermore, the correlations between mean of three-times-repeated measurements and the measure of each time are considerably high; r=.9894 with the first measure, .9935 with the second, .9931 with the third.
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  • Kiyoo Matsui, Hiroshi Sakamoto
    1966 Volume 21 Issue 2 Pages 94-97
    Published: June 10, 1966
    Released on J-STAGE: February 17, 2009
    JOURNAL FREE ACCESS
    The purpose of this study was to clarify the diurnal and seasonal variations in TAF.
    The subjects were 5 healthy men aged 30-37 years old. The measurements of TAF were carried out from a.m. 5°30′ to p.m. 9°30′ at intervals of 4 hours and in this study, the examinee aimed at the target of the Takakura's apparatus for 15 minutes continuously in each time. TAF-L and -D were computed from the standardized curve and the coefficient of variation was computed from TAF-L and -D. The duration of concentration maintenance, which is the total duration of aiming level better than 2.5 in the standardized curve, was measured.
    The experiments were made in July and in February on the same subjects.
    The following results were obtained;
    1) As the diurnal variation, it was observed that the mean regulatory range in the feed back system concerning with the target aiming became rough at 1°30′ p.m., but the relative reliability to exhibition of the feed back oscillation on this range became high.
    2) As the seasonal variation, it was certain that the mean regulatory rane in the feed back system concerning with the target-aiming became more rough in summer than in winter, and that the hypofunction in the feed back system was remarkable on the afternoon in summer according to the observation of the duration held above the TAF-L of 2.5.
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