巻号一覧
21 巻, 4 号
選択された号の論文の8件中1～8を表示しています
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谷村 寿重1966 年 21 巻 4 号 p. 269-278
発行日: 1966/10/10
公開日: 2009/02/17
ジャーナル フリーThis paper describes the surveying Benzo (a) pyrene (hereafter abbreviated as BaP) of the suspended matters and the falling matters which were collected from the industrial downtown district and urban residential district of Kita-kyushu city in summer and winter from 1964 to 1965, and then the investigating on the relations between BaP of the suspended matters and that of the falling matters which were collected at the similar places and times.
The results are as follows.
1) The highly correlations were found between BaP of the suspeded matters and that of the falling matters in both seasons in case of collecting the dusts at the similar places and times (winter r=0.8016, summer r=0.8281).
2) In both cases (suspended matters' method and falling matters' method), BaP in this industrial city air in winter was more than that in summer.
3) In case of suspended matters, BaP in the industrial downtown district was more than that in the urban residential district in both summer and winter. And in case of falling matters, BaP in the former district was similarly more than that in the latter district in both seasons.抄録全体を表示PDF形式でダウンロード (1138K) -
永田 久紀1966 年 21 巻 4 号 p. 279-283
発行日: 1966/10/10
公開日: 2009/02/17
ジャーナル フリー学校安全会の災害報告書を資料として,昭和38年度に京都市内の小学生に発生した1,841件の事故を調査した。学校事故の原因を,疫学的研究によって追求するには,以下の点が特に問題となる。
1. 特定の児童群,または特定の状況下における事故発生率を求めることが容易でない。事故発生率を求めるには,事故の調査と同時に,児童の生活時間を調査する必要がある。
2. 体育時間中の事故のうち,児童の行動に多少とも責任があると認められた事故(C-Accident)の比率は,他の授業時間中の事故の場合に比べて著しく小さかった。しかし体育時間中の事故と他の授業時間中の事故とを比較してみると,両者は授業の種類が異っているばかりでなく,発生場所等の他の要因に関しても著しく異っている。従って,C-Accidentの比率の相違が,真に授業の種類の相違に起因しているか否かは,充分慎重に検討しなければならない。事故発生に及ぼす各種の要因の影響を検討する場合にも,同様の考慮を払う必要がある。このような場合,事故発生率に及ぼす一つの要因の効果を明確にするには,種々の多変量統計方法が有効であろう。
3. 学校事故は極めて多種多様で,本質的に全く異る現象が混同されている懼れがある。従って学校事故全体を一括して研究するよりは,特定の対象,特定の状態に発生する事故を別々に研究するほうが合理的と考えられる。もし学校事故全体に共通する原因が存在するならば,それはこのような別々に行なわれた研究の成果のつみ重ねによって次第にあきらかにされるであろう。抄録全体を表示PDF形式でダウンロード (746K) -
山村 行夫, 中島 ちせ, 工藤 吉郎1966 年 21 巻 4 号 p. 284-289
発行日: 1966/10/10
公開日: 2009/02/17
ジャーナル フリーAt a photo offset printing plant, several workers were exposed to tetra alkyl lead in considerable concentration. In this plant the leaded gasoline was used as the wiping solvent for the forme beds.
1) The lead concentration as tetra alkyl lead found in the gasoline was 0.4g per liter and the concentration in the gasoline vapor was 0.62g per liter.
2) The leaded gasoline concentration in the air of the plant was rather increased, since a new type of air conditioning installation had been set up and it caused poor ventilation in the room.
3) The concentration of lead in the blood of workers and their urinary excretions of coproporphyrine were elevated. Additionally, the number of stipple cells in blood were slightly increased.
4) Tentatively all persons were administered Ca-EDTANa2, and their urinary lead amount before and after the administration was compared. The result indicated that the amount of lead excreted in urine after the administration uniformly exceeded that before the administration.
From this observation, the preventive measures of the lead exposure have been discussed, and it has been emphasized that leaded gasoline should not be used as solvent at any working processes, for example, like this case, for the prevention of lead poisoning.抄録全体を表示PDF形式でダウンロード (2706K) -
海水使用時と上水使用時の相違点について由比 顕之介1966 年 21 巻 4 号 p. 290-295
発行日: 1966/10/10
公開日: 2009/02/17
ジャーナル フリーBy investigation the gas and the sludge in a septic tank on purification of the sewage, theefficiency of the treatment by using sea water and by city water were compared.
The results were as follows:
(1) The digestible process of human excrements and the ammoniamizing process of nitrofraction in the first stage of the septic tank were more active in case of the sea water than of the city water. Thus the NH3-N and C.O.D. was maintained in high degree as the result of high solubility of the ammoniac nitrogen, the soluble sulfide and the organic acids to the sewage.
However the sewage through the second stage septic tank showed the low degree of the NH3-N and C.O.D.. This might indicate that dissolved substances were evaporated as NH3-, H2S-or CO2-gas or precipitated as metal binding suefide.
(2) In case of the sea water, the digestible process of human excrements was so rapid that the products of scum and sludge in the first stage septic tank were remarkabls small in quantity.
(3) In case of the sea water, the C.O.D. was maintained in high degree by increasing sulfide and the ratio of B.O.D. to C.O.D. was significantly low.
(4) In case of the sea water, the small quantity of formation of NO2 and NO3, and production of coloring and stinking substance in the sewage were observed. This might be due to reducing process of sulfide and the sufficient digestible process.抄録全体を表示PDF形式でダウンロード (793K) -
第5報 騒音曝露のグルタミン合成力におよぼす影響坂口 力1966 年 21 巻 4 号 p. 296-298
発行日: 1966/10/10
公開日: 2009/02/17
ジャーナル フリーPrevious studies have shown that the ammonia content in the brain, liver and blood was elevated in the rat under the extremely noisy condition, and that the increase in the ammonia content was inhibited by the oral administration of glutamic acid or aspartic acid.
In this paper, the ability of the brain and liver to synthesize glutamine was investigated under the extremely noisy condition.
The adult male rats were exposed to 100∼105 phon noise characterized by wide octave band spectrum for 3 hours. Glutamine synthetase activity was determined by Kennan's method.
The results were as follows:
1. Glutamine synthetase activity was inhibited by the noise exposure in the brain and liver.
2. By the oral administration of glutamic acid or aspartic acid, glutamine synthetase was not accelerated in the brain, but did in the liver.
3. The oral administration of glutamic acid or aspartic acid did not cause the decrease in glutamine synthesis in the brain and liver under the noise condition.抄録全体を表示PDF形式でダウンロード (395K) -
佐藤 孝彦1966 年 21 巻 4 号 p. 299-305
発行日: 1966/10/10
公開日: 2009/02/17
ジャーナル フリーUsing the Warburg manometer, the author investigated the toxicity of metal ions on oxygen utilization of activated sludge and estimated TC50 (the concentration of toxic substance required to obtain 50% inhibition of the oxygen utilization of unintoxicated sludge)
1) The toxicity of the ions to activated sludge showed the tendency of decrease in the following order: Cu++, Ag+, Hg++, Ni++, Cd++, Zn++, Co++, Cr+++, Cr+6, and Pb++.
2) Detoxication effect by EDTA salt was found in case of Cu++, Ni++, Zn++, Pb++, Cd++ and Co++. However in Hg++, Ag+, Cr+++, Cr+6, the effect was negligible.抄録全体を表示PDF形式でダウンロード (699K) -
ラット皮下投与時の体内分布とオートラジオグラフ森重 敏子1966 年 21 巻 4 号 p. 306-312
発行日: 1966/10/10
公開日: 2009/02/17
ジャーナル フリーAs previously reported 95Zr-95Nb were detected in fallout and vegetation in consequence of the nuclei explosion.On a point of view for biological effect of 95Zr-95Nb to animal, these radioactive materials were quantitatively injected subcutaneously to rats. These rats were sacrificed respectively at 5 hours, 24 hours, 7 days, 14 days, 28 days and 63 days after the administration. After that, the distribution of 95Zr-95Nb for main organs and tissues were determined and also radioactivities of them in the urine and in the feces were persuited for a long period after injection. Autoradiography of tibia for the victims were taken with a macro-contact method in order to observe locality and turnover for 95Zr-95Nb in the tibia.
The results obtained were as follows;
1. In the period of the experiments, the radioactivities for 95Zr-95Nb were extremely detected in the tibia rather than in the other organs and tissues. The next highly deposited tissue of them was an upper incisor. But radioactivities of them in main organs except tibia were approximately same level at the 63th experimental day through biological turnover and excretion.
2. Amounts of 95Zr-95Nb in both urine and feces among experimental rats were the most mainly excreted in them within 24 hours after injection. After that, these amounts of 95Zr-95Nb excreted in urine and feces per 24 hours gradually decreased day by day and had been kept on at about same level from the 14th experimental day to the end of the experiments. Amount of the substances mentioned above was generally larger in urine than in feces through the experimental period.
3. It could be considered from the result of autoradiographic study for the tibia in the experiments that; firstly, 95Zr-95Nb were remarkably deposited into a part of metaphysis close to epiphysis line in the initial stage, the 5th experimental day, and were consequently accumulated into metaphysis rather than into both epiphysis and diaphysis. Secondly, at the 14th experimental day, they released from the metaphysis close to epiphyseal line but their depositions at the part of epiphysis did not so remove.
Thirdly, at the 63th experimental day, they had still deposited into the epiphysis.抄録全体を表示PDF形式でダウンロード (3436K) -
白石 陽治, 小野塚 清一, 稲原 淳, 武政 治隆, 趙 大〓1966 年 21 巻 4 号 p. 313-321
発行日: 1966/10/10
公開日: 2009/02/17
ジャーナル フリーSome measures to counter car accident have been taken from various angels in recent times, while their epidemiological consideration has not sufficiently been given. The presentation here is a study on the latter problem.
Three elements have to be taken into account when car accident is to be investigated epidemiologically; first, car traffic itself, secondly what is related to main constituent factors such as driver's mental and physical fatigue or difficulties, and thirdly what is concerned with environmental factors such as road conditions, traffic jam, and effect of lighting.
Present subject has been concentrated on the significance of smog as one of the links of environmental factors in causing car accident. For this purpose authors took up car accidents which occurred within the circle of two kilometer at the central Tokyo, its center being the Japanese Meteorological Observatory where smog has been observed scientifically. Data are based upon the 1960∼1962 meteorological observation records field in the Japanese Meteorological Observatory and upon the traffic accidents records registered by policemen. Since smog occurs more frequent in January and December, available data were recorded in both months in 1960∼1962.
The following are the results authors obtained in connection with the relationship between the smog and the car accidents.
1) The smog fosters car accidents during 3 hours from 9 to noon and 4 hours from 5 to 9 in the evening.
2) The higher is the effective temperatuae the higher is the frequency of car accident.
3) High rate of car-accident is observed between 17 to 21 hours below 30°ET, and above 40°ET high accident frequency is seen when there is no smog. At 30° to 39°ET high frequency is observed when there is no smog. While human injuries are more caused when ET is higher than 40° with smog during 3 hours to noon, but during 4 hours around the sunset time it is high when smog is prevailling especially slight human injuries are seen oftener.
4) In terms of weather and effective temperature, the accident rate is higher when it is rainy and below 30°ET.
5) The rate of accident is high when it is below 30°ET, smoggy and rainy, and if it is above 40°ET the rate is high when it is fine so far as it is smoggy, but under the same condition the rate of slight human injuries are high when it is raining. If it is 30° to 39°ET, slight human iujuries are oftener met when it is fine so far as it is smoggy.抄録全体を表示PDF形式でダウンロード (986K)
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