産業医学
Online ISSN : 1881-1302
Print ISSN : 0047-1879
ISSN-L : 0047-1879
20 巻, 5 号
選択された号の論文の17件中1~17を表示しています
  • 岩田 弘敏
    1978 年 20 巻 5 号 p. 245
    発行日: 1978年
    公開日: 2011/03/04
    ジャーナル フリー
  • 無作用レベル確立の再検討
    土屋 健三郎, 杉田 稔, 桜井 治彦
    1978 年 20 巻 5 号 p. 247-253
    発行日: 1978年
    公開日: 2011/03/04
    ジャーナル フリー
    In this study dose-response and dose-effect relationships were examined with reference to no-effect levels using observed data from three groups of lead workers who had been exposed to three different concentrations of lead. Blood lead concentration (PbB) was used for “dose” and ALA concentration in urine (ALAU) and rate for 5 mg/l or greater of ALAU were used as “effect” and “response” respectively.
    Dose-effect and dose-response relationships between PbB and ALAU of these three different exposure populations indicated three different curves although theoretically they should all have indicated a similar curve. This means that “effect” or “response” for the highest exposure group was higher than that for the lowest exposure group on the same “dose” level. This difference is statistically explained for the most part by variations in the determinations of “dose” (PbB) as well as “effect” or “response” (ALAU). In view of the above results, it would seem that re-examination is required in establishing criteria of no-effect levels for dose-response relationships of various environmental chemicals.
  • 大村 外志隆, 中川 秀昭, 山本 三郎, 加藤 孝之, 本多 隆文, 能川 浩二
    1978 年 20 巻 5 号 p. 254-260
    発行日: 1978年
    公開日: 2011/03/04
    ジャーナル フリー
    Flow-volume, spirometric parameters and chest X-ray examinations were obtained in 162 workers exposed to diatomaceous earth dust and in a group of 81 healthy subjects for comparison.
    The dust contained from 66.5 to 74.1% of SiO2. Smokers were found in 74.5% of the workers and in 77.3% of the control subjects.
    Pneumoconiosis were found in 18% (27 cases) of the workers by chest X-ray examinations. The grade of their pneumoconiosis were all mild (25 cases of PR1 and 2 cases of PR2).
    Eight workers were obstructive (FEV1%<70%), one case was constrictive (%VC<80%) and one case showed mixed disorder in spirometry. The mean value of FEV1% in male workers of age-group 50-55 years was lower than that of the control subjects.
    In flow-volume test, the mean values of V50 in male workers of age-group 50-55 years and in female of age-groups 30-39 and 40-49 years, were lower than those of the control subjects. Furthermore, the mean values of V25 in male and female workers of age-group 40-49 years, were lower than those of the control subjects. Those differences were statistically significant.
    Nevertheless, mean values of ratios V50/V25 of workers were not different from those of the control subjects by each sex and by age-group.
    Comparison of pneumoconiosis group (20 cases) and no-finding group (69 cases) in respiratory function tests were not different in male workers of age-group 40-55 years.
    On the basis of our observations, we recommend the use of the flow-volume parameters (V50 and V25) in respiratory examinations in workers exposed to diatomaceous earth dust.
  • 第1報 自覚症状について
    鈴木 秀吉
    1978 年 20 巻 5 号 p. 261-267
    発行日: 1978年
    公開日: 2011/03/04
    ジャーナル フリー
    A study has been conducted on 71 men using vibratory tools in a factory of steel foundry situated in Fukushima Prefecture in Japan. They have been engaged in the work with pneumatic instruments : 21 men, chipping hammer (CH) work ; 29 men, air grinder (AG) work ; 4 men, sand rammer (SR) work ; 16 men, work with mixed tools mentioned above (MT). The users were interviewed principally on the basis of the standard form of the questionnaire which had been designed by Labor Ministry as the guide for the survey of vibration syndrome in forest workers. The operating hours with CH, AG and SR were about 2, from 5 to 6 and from 1 to 2 hours per day, respectively. Seventeen out of 71 men had worked for less than 1/2 year.
    The data obtained were analysed and summarized as follows :
    1. The group of CH users who worked for 1/2 year or more showed higher prevalence of Raynaud's phenomenon and hypoesthesia or paresthesia than the group of 17 users who worked for less than 1/2 year.
    2. The group of AG users who worked for 1/2 year or more indicated higher prevalence of Raynaud's phenomenon and fatigue than the group of users who worked for less than 1/2 year.
    3. The attacks of Raynaud's phenomenon in the CH users were restricted to the left hand which held a chisel.
    4. The prevalence rates of Raynaud's phenomenon in the groups of CH, AG and MT users were 23%, 23% and 25%, respectively, and when taken account of the occurence rate in each period of the experience of the work, the cummulative values reached to 31%, 69% and 23% in the groups of CH, AG and MT users, respectively.
    5. No Raynaud's phenomenon was observed among SR users.
    6. The attack of Raynaud's phenomenon was observed exclusively in cold season and occurred almost on the way to work shop or before leaving home in the early morning and rarely in the working premises.
    7. The workers who suffered from Raynaud's phenomenon had more complaints of hypoesthesia or paresthesia, heavy feeling in arms and difficulty in writing clearly than those who did not have the phenomenon.
  • 第2報 皮膚知覚と末梢循環機能について
    鈴木 秀吉
    1978 年 20 巻 5 号 p. 269-275
    発行日: 1978年
    公開日: 2011/03/04
    ジャーナル フリー
    The purpose of the present study was to obtain better understanding of the sensory disturbances and the dysfunctions of blood flow of hands of 71 male workers who used the vibrating pneumatic tools (e.g., chipping hammer, air grinder and sand rammer) in a factory of steel foundry.
    The vibrating tool users were asked to stay 30 minutes or over in a room at temperatures of 20° to 23°C and examined. The pain sense was tested on the dorsum of the middle phalanges by pinprick. The response to pinprick was determined with a intravenous injection needle 1/2mm in diameter pressed by various weights, and the threshold being expressed as grams. The vibratory sense was assessed at the ventral regions of the distal phalanges with a C-128 tuning fork, and the threshold being expressed as seconds, which showed the duration of the aroused sensation of vibration. The skin temperature was determined at the same part as that of the vibratory sense by a skin thermometer. The recovery time of blood flow was measured in seconds at the nail-bed of fingers by Yamada's “Nail Press Test.”
    The workers were divided into three groups according to their duration of the work as vibrating tool users and the presence or absence of the attacks of Raynaud's phenomenon as follows : the first group consisted of 17 men who worked for less than 1/2 year ; the second group, 40 men who worked for 1/2 year or more and had no attack of Raynaud's phenomenon ; the third group, 14 men suffered from the attack of Raynaud's phenomenon.
    The data were compared among the three groups. The results are as follows :
    1. The prevalence of workers who showed the value of 3g or over as the threshold of pain sense was higher in the second and the third group than in the first group, and that of 5g or over, higer in the third group than in the second group.
    2. The values of 8 seconds or less as the vibratory sense threshold were seen more in the third group than the other groups.
    3. The workers who showed the skin temperature below 31.0°C were found more in the third group than in the other groups.
    4. The third group had more workers who required 3 seconds or over for the recovery time of blood flow than the first group.
    5. There were correlations between the increase in years of age and the degree of loss of pain sense in the third group, between the former and that of vibratory sense in the second and the third groups and between the length of the recovery time and the fall of the skin temperature in three groups.
  • 宮川 定吉
    1978 年 20 巻 5 号 p. 276-277
    発行日: 1978年
    公開日: 2011/03/04
    ジャーナル フリー
  • とくに身体面の結果について
    大道 明, 三觜 明, 安福 慎一, 片岡 千由希
    1978 年 20 巻 5 号 p. 278-279
    発行日: 1978年
    公開日: 2011/03/04
    ジャーナル フリー
  • 友国 勝麿
    1978 年 20 巻 5 号 p. 280-281
    発行日: 1978年
    公開日: 2011/03/04
    ジャーナル フリー
  • 1978 年 20 巻 5 号 p. 282-289
    発行日: 1978年
    公開日: 2011/03/04
    ジャーナル フリー
  • 日本産業衛生学会
    1978 年 20 巻 5 号 p. 290-301
    発行日: 1978年
    公開日: 2011/03/04
    ジャーナル フリー
  • 許容濃度等に関する委員会
    1978 年 20 巻 5 号 p. 302
    発行日: 1978年
    公開日: 2011/03/04
    ジャーナル フリー
  • 許容濃度等に関する委員会
    1978 年 20 巻 5 号 p. 303
    発行日: 1978年
    公開日: 2011/03/04
    ジャーナル フリー
  • 許容濃度等に関する委員会
    1978 年 20 巻 5 号 p. 304
    発行日: 1978年
    公開日: 2011/03/04
    ジャーナル フリー
  • 許容濃度等に関する委員会
    1978 年 20 巻 5 号 p. 305
    発行日: 1978年
    公開日: 2011/03/04
    ジャーナル フリー
  • 許容濃度等に関する委員会
    1978 年 20 巻 5 号 p. 306
    発行日: 1978年
    公開日: 2011/03/04
    ジャーナル フリー
  • 許容濃度等に関する委員会
    1978 年 20 巻 5 号 p. 307
    発行日: 1978年
    公開日: 2011/03/04
    ジャーナル フリー
  • 日本産業衛生学会交代勤務委員会
    1978 年 20 巻 5 号 p. 308-344
    発行日: 1978年
    公開日: 2011/03/04
    ジャーナル フリー
feedback
Top