All issues
Successor
Volume 23 (1976)
- Issue 4 Pages 203-
- Issue 3 Pages 135-
- Issue 2 Pages 63-
- Issue 1 Pages 1-
Volume 23, Issue 1
Displaying 1-6 of 6 articles from this issue
- |<
- <
- 1
- >
- >|
-
Noriko OKAYASU1976 Volume 23 Issue 1 Pages 1-10
Published: 1976
Released on J-STAGE: September 06, 2021
JOURNAL OPEN ACCESSNine cases of malignant lymphomas of undifferentiated type, which is difficult to classify whether they are derived from reticulum cell or lymphocyte by light microscopy, were collected and studied by electron microscopic and histopathological examinations, and classified into two types from electron microscopic findings. Some characteristic features, including cellular size and shape, and quantity and quality of cytoplasmic and nuclear structures at the electron microscopic level, were compared betweewn the two types of lymphomas with similarity to reticulum cell and to lymphoblastic cell. From the aspects of systemic and synthetic view, it is possible to classify whether these tumor cells correspond to the so-called reticulum cell or to lymphoblastic cell in malignant lymphomas of undifferentiated type, which was previously thought to be indistinguishable. In addition to these results, clinico- and histo-pathological analyses were also made, with short discussion.View full abstractDownload PDF (3116K) -
Kazunobu YAMAOKA1976 Volume 23 Issue 1 Pages 11-22
Published: 1976
Released on J-STAGE: September 06, 2021
JOURNAL OPEN ACCESSThree studies were conducted to obtain available data on the determinants for detection of deception rates. (a) Psychophysiological measures were evaluated for effectiveness in detecting deception. A relevant-irrelevant method was used with two conditions; neutral stimulus and personal stimulus. Of the physiological variables, skin potential response, skin resistance response, finger pulse volume, and skin blood flow were significant indicators of deception. (b) Three experiments were conducted to study the psychophysiological effects of false and true feedback of skin potential response on the detection rates. It was concluded that the subjects receiving information that they were detectable were easier to detect than the subjects who believed that they were not detected and the subjects who received feedback of actual responses. (c) With the use of skin potential response channel, significant detection rates were obtained for all experiments under the condition that subjects verbally lied by means of “No” responses. On the other hand, the subject s who were motivated to deceive produced differentially augmented responses in the absence of any verbal response and also when the subjects told the truth to critical items and lied to irrelevant ones.View full abstractDownload PDF (1685K) -
Kenshiro TAKAMORI, Fumiko MIZUNO, Yuzuru MATSUDA, Nobuyoshi TAKAHASHI, ...1976 Volume 23 Issue 1 Pages 23-26
Published: 1976
Released on J-STAGE: September 06, 2021
JOURNAL OPEN ACCESSDextran degrading activity of the human oral microflora was detected by culturing in TYD broth (Tryptose 1.0%, Yeast extract 0.3%, Dextran T-150 (Pharmacia, MW. 150,000) 0.15 %). All of the plaue and saliva samples collected from 10 subjects showed a dextran degrading activity, both cultured aerobically and anaerobically, while the anaerobic culture was more active than the aerobic. Furthermore, some individual differences were observed in their activity. Crude enzyme (s) was extracted from the supernatant of a mixed culture of plaque sample by adding ammonium-sulfate to 0.6 and 0.8 saturation (called E 1 and E-2, respectively). E-1 contained 2 dextran-degrading enzymes, one being thought to be an endoenzyme, with the optimal pH being 5.0 and the other an exo-enzyme with the optimal pH being 7.0-7.5. On the other hand, E-2 contained 1 enzyme of the endo-type. Thirteen strains producing dextranase were isolated rfom the plaque and were identified as Bacteroides oralis-like organisms. Several other organisms were thought to produce dextranase, although we failed to isolate them in this experiment.View full abstractDownload PDF (538K) -
Yuzuru MATSUDA1976 Volume 23 Issue 1 Pages 27-40
Published: 1976
Released on J-STAGE: September 06, 2021
JOURNAL OPEN ACCESSThe distribution of dextran-degrading microorganisms in the saliva and plaque samples from the human oral cavity was assayed on 9 subjects. Approximately 2/ 3 of the saliva samples degraded Dextran T-150 (Pharmacia, M.W. 150,000) and 1/10 the Blue Dextran (Pharmacia), while 2/5 and 1/8 of the plaque samples degraded Dextran T-150 and Blue Dextran, respectively. Thirty-seven strains of the Blue Dextran degrading bacteria were isolated from the saliva and plaque samples and were classified into 6 groups by their morphology, gram staining and oxygen tolerance. The 24 strains from the 37 isolates, more or less, were shown to degrade the insoluble glucan extracted from Streptococcus mutans FA-1 on the agar plate. The 8 strains, selected from each group, were tested for their activity against the insoluble glucan extracted from Str. mutans (FA-1, HS-6, BHT, CHT, GS-5, LM-7 and PK-1) and Str. salivarius (HHT). The strains belonging to Groups I, II, IV and V showed activity against the insoluble glucan used. Among them, the strains of Group IV (gram negative facultative cocci) and Group V (gram negative strict anaerobic rod) were the most active against the insoluble glucan.View full abstractDownload PDF (1796K) -
Yutaka MIYAJIMA, Katsuhiro YASUDA, Yasuo KANZAWA1976 Volume 23 Issue 1 Pages 41-51
Published: 1976
Released on J-STAGE: September 06, 2021
JOURNAL OPEN ACCESSThe precipitation hardening in gold-cobalt alloys containing less than 5 wt.%Co was studied by means of resistivity, hardness, X-ray diffraction, and optical microscopic examination. The hardness curves showed two hardness peaks after isothermal ageing below the temperature of 250 or 300℃. It was considered that the first peak was due to the formation of G.P. zone which was confirmed by reversion phenomenon. The second peak was due to the growth of metastable cobalt-rich precipitate, and this stage was found to make a major contribution to the age-hardening in the present alloys. The nodular products at grain boundary do not play an important role in age-hardening. Acitvation energies, order of the reaction involved, and the rate constant for the growth process were established. The difference in growth mechanism of the metastable precipitate was deduced from the kinetics data.View full abstractDownload PDF (1569K) -
Kohji HARA, Hiroyasu HOSODA1976 Volume 23 Issue 1 Pages 53-61
Published: 1976
Released on J-STAGE: September 06, 2021
JOURNAL OPEN ACCESSChanges in the gingival architectural form and the incidence were observed on 1,700 interdental papillae and 3,791 parts of the gingival margin of 89 patients, both males and females, with periodontal diseases. The effects of improperly adapted restoration, tooth irregularity, depth of periodontal pocket and degree of bone loss on the gingival changes were also examined. Of the four types of changes observed in the marginal gingiva, the recessed form occurred most frequently. Next in order of frequency of occurrence were the ledged, festoon and clef t forms. The greater part of the gingival changes observed in the interdental papilla were both of the blunted and enlarged forms. In the interdental papilla, the blunted and cratered forms increased and the enlarged form decreased according to the degree of bone loss. Improperly adapted restoration and tooth irregularity influenced the gingival changes observed. The depth of the periodontal pocket was not found to influence the gingival form.View full abstractDownload PDF (1719K)
- |<
- <
- 1
- >
- >|