All issues
Volume 26 (1971 - 197･･･
- Issue 6 Pages 467-
- Issue 5 Pages 401-
- Issue 4 Pages 351-
- Issue 3 Pages 281-
- Issue 2 Pages 195-
Volume 26, Issue 3
Displaying 1-9 of 9 articles from this issue
- |<
- <
- 1
- >
- >|
-
Kazuo Shirasaki, Shimako Ito, Tatsuo Negishi, Fusao Akiyama1971 Volume 26 Issue 3 Pages 281-284
Published: August 28, 1971
Released on J-STAGE: February 17, 2009
JOURNAL FREE ACCESSPMI (Proportional Mortality Indicator) is the percentage of deaths at a certain age and over to total deaths, and this age is usually fixed to that of 50 years old. Through the procedure of principal component analysis, the authors investigated the age for PMI in regions with various scales of population.
Results obtained were as follows:
1) Judging from the eigen values in the primary and secondary principal component, linear regressions were considerable clear.
2) The age of 40 or 45 years was most adequate for the age mentioned above.
3) The values of linear combination in the primary principal component of PMI calculated by dividing lines for every 5th year were valid for the evaluation of health in the middle or large regions but not in the small regions in comparison to another health indicators.View full abstractDownload PDF (497K) -
Katsuhiro Fukuda, Hirotsugu Miyake, Akira Okada1971 Volume 26 Issue 3 Pages 285-290
Published: August 28, 1971
Released on J-STAGE: February 17, 2009
JOURNAL FREE ACCESSAn experimental data with rats exposed intermittently to mercury vapor were simulated by a mathematical model assuming first order kinetics. Differential equations were written with 4 compartments for 4 visceral groups. Testing the model with an assumption of mercury loss from the lungs into breath showed good agreement between the experimental and calculated values. The rate constants of mercury transfer were then estimated. The discrepancy of mercury content between a high concentration-short term exposure and a low concentration-long term exposure was also simulated by the model using a hybrid computer with satisfactory fitting to the experimental values. These results support the speculation made in the previous study that the rate constant for mercury transfer from lungs to the remaining organs might be smaller than that for mercury uptake by the lungs from the inhaled air.View full abstractDownload PDF (677K) -
Katsuro Irukayama, Shunsuke Kuwahara1971 Volume 26 Issue 3 Pages 291-297
Published: August 28, 1971
Released on J-STAGE: March 31, 2009
JOURNAL FREE ACCESSMethyl mercury chloride administered subcutaneously to hens transferred to their eggs and the major part of mercury in eggs existed as methyl mercury complex with the protein of the egg white. Egg white powder obtained by treatment with ether and acetone was dissolved in water. The protein containing methyl mercury in the solution was salted out by adding 30-60% of ammonium sulphate. The protein which was salted out was again dissolved in water by dialysis, and the protein solution was fractionated in tubes of a fraction collector through Sephadex G 100. Protein in the solution of each tube was fractionated by electrophoresis through a cellulose acetate membrane. The albumin fraction contained mercury.
The same protein solution was fractionated by Disk-electrophoresis apparatus using polyacrylamide gel (pH 9.4), and protein and mercury in each tude were quantitatively determined. Solution of the tubes in which contents of protein and mercury were high was lyophilized. The lyophilized protein powder which was dissolved in veronal buffer solution containing 0.1M natrium chloride was analyzed by an ultracentrifuger (rotor speed 60, 000rpm). The calculated sedimentation constant (S20, w) was 3.44× 10-13m/sec (dyne/g) (≈3.4S) as V was taken for 0.748.View full abstractDownload PDF (1458K) -
Masao Yoshida, Rinji Kawana1971 Volume 26 Issue 3 Pages 298-303
Published: August 28, 1971
Released on J-STAGE: February 17, 2009
JOURNAL FREE ACCESSBacteriological observations of the throats of 1, 015 persons were carried out. In this study 370 hospitalized patients (in and outpatients) were tested. They had not been treated using wide-spectrum-antibiotics. The remaining 645 persons were employed as control groups, 78 healthy employees in the medical hospital, (physicians, nurses and etc.) and 567 healthy convicts in The Morioka National Prison.
The gram negative bacilli (except Hemophilus) which grow under an aerobic condition, Staphylococcus and Candida were investigated, in reference to the detection rates and resistance to antibiotics and furthermore to the phage-typing of Staphylococcus.
Detection rates of the gram negative bacilli and of Staphylococcus were found to be the lowest in the throats of patients. The isolated strains on patient, however, resisted more to multiple antibiotics than those isolated in the throats of the healthy convicts. The throats of healthy hospital employees and those of patients showed similar tendencies. The numbers of gram negative bacilli in the throats of the patients were more numerous than those of the 2 healthy groups.
It was epidemiologically significant that Escherichia and Pseudmonas aeruginosa were found in the throats of all groups.
Bacteriological investigations of the throat indicated a greater significance than that of the nose, one of the reasons being that gram negative bacilli were not detected in the nasal cavity but in the throat.View full abstractDownload PDF (1009K) -
Kozo Ito1971 Volume 26 Issue 3 Pages 304-314
Published: August 28, 1971
Released on J-STAGE: February 17, 2009
JOURNAL FREE ACCESSNitrogen dioxide is one of the main atmospheric pollutants in many communities. It is emitted in large quantities in the exhaust of automotive engines and is formed when atmospheric nitrogen and oxygen are heated to a high temperature in a flame.
Experiments were made to ascertain possible synergistic effects of nitrogen dioxide and influenza virus infection in mice. Young female dd strain mice weighing 15 to 17g were challenged with mouse-adapted type A influenza virus, strain PR 8, two hours after acute and intermittent exposure to 10ppm nitrogen dioxide for two hours daily for one, three and five days. Female I.C.R. strain mice weighing 22 to 25g were also challenged with type A influenza virus after continuous exposure to 0.5 to 1.0ppm nitrogen dioxide for 39 days.
Results were as follows;
1) Acute and intermittent exposure to 10ppm nitrogen dioxide for two hours daily for five days significantly increased the susceptibility of mice to influenza virus infection as demonstrated by enhanced mortality.
2) Extent of interstitial pneumonia was higher in the mice challenged with influenza virus after chronic and continuous exposure and acute and intermittent exposure to nitrogen dioxide than in the infected controls.
3) Adenomatous proliferations of bronchial and bronchiolar epithelium were marked in the mice challenged with influenza virus after continuous exposure to low levels of nitrogen dioxide.View full abstractDownload PDF (2980K) -
Kunio Owada, Kunihiro Sakamoto, Heizo Tanaka1971 Volume 26 Issue 3 Pages 315-320
Published: August 28, 1971
Released on J-STAGE: February 17, 2009
JOURNAL FREE ACCESSThe sex ratio and birth order between siblings of parents and their children were surveyed on 4, 700 families of students who were attending 6 public junior high schools in the suburbs of a large city.
Results obtained are as follows:
(1) The sex ratios in the siblings of parents and their children were 103 and 97 respectively.
(2) The mean number of the siblings of the children was 2.7 and that of parents was as high as 5.1.
(3) When siblings were two in number, cases where both siblings were males appeared more frequently among the children than the parents, and vice versa in the case where both were females. This phenomenon appears to be characteristic of recent Japan.
(4) When siblings were more than four, the birth order among males and females corresponded to the theory of“random walk”in case of the parents, but not so in the case of children.
These results seem to imply that recent changes in socio-economic status as well as propagation of family planning have bearing on sex ratio and birth order.View full abstractDownload PDF (645K) -
Kotaro Yamamura, Akira Okada1971 Volume 26 Issue 3 Pages 321-324
Published: August 28, 1971
Released on J-STAGE: February 17, 2009
JOURNAL FREE ACCESSAuthors studied the masking of speech (One-Syllable 100 Word List) by white noise. The following conclusions were reached:
The curves of Speech Articulation Score shift to the right with increased intensity of masking noise. Davis' Social Adequacy Index (S.A.I.) derived from the curves of Speech Articulation Score revealed a sharp descent when the level of the sound pressure of noise increased.View full abstractDownload PDF (470K) -
Rorschach TechniqueHaruo Kuwabara1971 Volume 26 Issue 3 Pages 325-336
Published: August 28, 1971
Released on J-STAGE: February 17, 2009
JOURNAL FREE ACCESSThe Rorschach Test was administered to 165 persons all over 65.
Results are as follows:
Subjects were composed of three groups A, B and D.
Group A was characterized by a marked increase of the Rorschach signs of Personal reference and Idea perseveration;
Group B by a marked increase in the Rorschach signs of Fine details (tendency to be meticulous about minor parts of the blot on the Rorschach card) and Ambiguities in the blot choice;
Group D by a tendency to say something in accordance with a Rorschach response but actually paying little attention to the blot on the cards (nonsensical response). This group belongs to a latent dementia senilis.
General characteristics of the test: to be meticulous about minor details as well as a lack of usual content and form in response.
Rorschach responses in relation to mental function of the aged: Memory decreases with old age and compensation is made by: (a) making excessive use of personal experiences when responding to the Rorschach cards (b) being meticulous about minor details of the blots. Considerable decrease in mental function makes use of compensation impossible and a nonsensical response is given.View full abstractDownload PDF (1775K) -
Yori Ueno1971 Volume 26 Issue 3 Pages 337-343
Published: August 28, 1971
Released on J-STAGE: February 17, 2009
JOURNAL FREE ACCESSThe concept of a permissible dose is one appearing at a contactpoint of natural and social sciences. The permissible dose in radiation protection was adopted as a model in the present paper, reason being to analyze the concept historically and to realize and understand the process of development, as this concept has been discussed extensively in radiation protection. It is emphasized here that not only somatic but also genetic changes are included in biological responses where permissible doses are concerned. The permissible dose is being considered separately for the individual and for workmen in shops where they may contact agents concerned with the permissible dose. A decision has been reached utilizing ecological knowledge including mechanisms of dilution and concentration on a global scale. In general, the permissible dose has been estimated conceptually pivoting on the balance of benefit and injury for humans. It is extremely necessary to know for whom it is beneficial and for whom it is injurious. When discussing a permissible dose, medical staff should arrive at decisions from purely medical and biological viewpoints rather than from the viewpoint of balance.View full abstractDownload PDF (1036K)
- |<
- <
- 1
- >
- >|