THE BULLETIN OF NATIONAL INSTITUTE of TECHNOLOGY, KISARAZU COLLEGE

[title in Japanese]

Article type: Cover
1974 Volume 7 Pages Cover1-
Published: 1974
Released on J-STAGE: May 18, 2023

DOIhttps://doi.org/10.19025/bnitk.7.0_Cover1

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[title in Japanese]

Article type: Index
1974 Volume 7 Pages Toc1-
Published: 1974
Released on J-STAGE: May 18, 2023

DOIhttps://doi.org/10.19025/bnitk.7.0_Toc1

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Aircraft Turbo-jet Engine as the Gas Sources of the Shaft Power Gas Turbine

Hiroshi WAZUMI

Article type: Article
1974 Volume 7 Pages 1-8
Published: 1974
Released on J-STAGE: May 18, 2023

DOIhttps://doi.org/10.19025/bnitk.7.0_1

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The gas turbine has the greater out-put capacity per its volume or weight than other power plants. The gas turbine can develop more merits by the use of appropriate aircraft turbo-jet engine as its gas generating section. The specific character of this kind engine was investigated.

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The Characteristics of Wire Drawing Applied with Ultrasonics (The third report)

Shimaho MATSUMURA

Article type: Article
1974 Volume 7 Pages 9-14
Published: 1974
Released on J-STAGE: May 18, 2023

DOIhttps://doi.org/10.19025/bnitk.7.0_9

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The process in which the copper wire is down between the vibrated die and 2nd die in the environment of ultrasonics has been studied experimentally. Additionally the analysis for the reduction of the drawing force has been tried dynamically and mathematically. The results are as follows; (1) When the distance between two dies is optimum, the drawing force reduces largely, but simultaneously there is a posibility of the fracture of the wire. (2) The temperature of the part broken has risen to above 450 degrees. (3) On the assumption that the wire and the vibrated die collide periodically and the drawing force depends on the impact velocity, the average of the drawing force calculated theoretically coincides with the experimental value satisfactorily.

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Measurement of Target Capacitance in the Photoconductive Camera Tube

Yohachi KONNO

Article type: Article
1974 Volume 7 Pages 15-19
Published: 1974
Released on J-STAGE: May 18, 2023

DOIhttps://doi.org/10.19025/bnitk.7.0_15

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One method of measuring the target capacitance in the photoconductive camera tube is described. The tube is operated in the desk condition and the target capacitance is charged by the scanning beam. Then the electron beam is blanked off during the period of several T. V. fields, while the dark current discharges the target capacitance. The recharging current in the first field after rescanning is measured. The target capacitance can be calculated from the above data. We used the Toshiba 7262A vidicon in the experiment and found that the target capacitance was about 2500 PF.

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Properties of Ladder Network and Their Analysis in Electro-technics

Yuji AZUMA

Article type: Article
1974 Volume 7 Pages 21-26
Published: 1974
Released on J-STAGE: May 18, 2023

DOIhttps://doi.org/10.19025/bnitk.7.0_21

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Some properties of ladder network are presented an optimum topological method for evaluating the graph impedance. The method is an optimum in the sense that the impedance expression has conpacts of the graph. It is topological in the sense that the impedance expression is obtained from the structure of the graph and the difference equation.

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Anodic Oxide Films on CdTe ( II )

Shigeru FUYUKI

Article type: Article
1974 Volume 7 Pages 27-30
Published: 1974
Released on J-STAGE: May 18, 2023

DOIhttps://doi.org/10.19025/bnitk.7.0_27

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Heating anodic Films on P type CdTe under Cd pressure changes the films from high resistivity to low. Junction properties between the film of low resistivity and p CdTe wafer were studied. As increasing the heating time photoelectro motive force and photo current increase and v-I characteristics become similar to the PN junction's.

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The Measurements of the Atmospheric Radio Noise at the 6mm-Wavelength

Shinji KODAIRA, Koichi ISHII, Tsuyoshi NAKAMURA

Article type: Article
1974 Volume 7 Pages 31-36
Published: 1974
Released on J-STAGE: May 18, 2023

DOIhttps://doi.org/10.19025/bnitk.7.0_31

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The earth's atmospheric emission at the 6 mm-wavelength was observed from November 1972 to August 1973 with the 1500 mm-diameter Cassegrain Antenna. The atmospheric absorption and emission coefficients a had the values of between 0.25 and 0.35. On the other hand, it has the numerical calculation that the absorption and emission coefficients include both the components O2 molecular and the water vaper in the earth's atmosphere. The estimations of the effective thickness for the water vaper and O2 molecular in the atmosphere were made using the absorption coefficient O2 molecular ane water vaper.

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Transfer of Triplet Excitation Energy in Benzophenone-Naphthalene Crystals

Kunio TAKAHASHI, Tokihisa NAKAMURA

Article type: Article
1974 Volume 7 Pages 37-42
Published: 1974
Released on J-STAGE: May 18, 2023

DOIhttps://doi.org/10.19025/bnitk.7.0_37

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The diffusion of triplet exciton in double-layered crystals of benzophenone and naphthalene has been studied. The triplet excitons of naphthalene were formed by energy transfer from benzophenone triplet states excited by N2 laser-light irradiation at 77 K. The probability of the energy transfer from benzophenone to naphthalene was determined by the triplet-exciton lifetime of benzophenone. The zone-refining effect on the purity of the naphthalene crystals was considered by investigating the decay time of the sensitized phosphorescence from crystalline naphthalene.

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The Thinking of Strucure in System and Mathematics

Kotaro SAMESHIMA

Article type: Article
1974 Volume 7 Pages 43-55
Published: 1974
Released on J-STAGE: May 18, 2023

DOIhttps://doi.org/10.19025/bnitk.7.0_43

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Recently we have heard that "today is the age of information," and informational materials have been carried into mathematical education. But what is the information? If we do not look it only at the surface, but make a deep study into it, we must discover that there is after all the way of thinking which creates the system at the root of fundamental mind of information. The author thinks that this thinking is similar to the thinking of Structure of J. Piaget. And the thinking of Structure is the very thinking of mathematics. (a) The whole is determined not by the peculiarities of constituent elements but by the law of relation between the elements. (b) Even if we replace the constituent elements for anything, the law is the same. (c) The Structure produces only the element which holds the law. In this paper, these properties are shown not only by group, probability and metamathematics as examples of mathematics but also by combinatorial circuit and Wiener's Differential Space as examples of System. Especially, in the Wiener's example the agreement of Structure and Process is discussed.

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A Study on the Back Stroke Arm Pull

Tadayoshi TANAKA

Article type: Article
1974 Volume 7 Pages 57-60
Published: 1974
Released on J-STAGE: May 18, 2023

DOIhttps://doi.org/10.19025/bnitk.7.0_57

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The elbow bend is accompanied by a rotation of the upper arm which prevents the elbow from dropping. After this point of maximum elbow bend has been reached, the hand pushes backward and downward in a quarter circle motion with the palm pushing toward the bottom of the pool at the end of the arm pull. The last half of the pull is achieved by extension of the elbow, a continued medial rotation and adduction of the upper arm. The downward push at the end of the pull causes the body to roll on its longitudinal axis. In many cases the hand finishes a foot below the hips because the palm is facing inward toward the thigh as it pushes downward. The push downward is a fast movement and is close to a throwing motion in terms of its acceleration. The pull, from beginning to end, has described the pattern of a flattened 'S'.

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The Mechanical Technology in Our College

Kazumi AKIBA

Article type: Article
1974 Volume 7 Pages 75-79
Published: 1974
Released on J-STAGE: May 18, 2023

DOIhttps://doi.org/10.19025/bnitk.7.0_75

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[title in Japanese]

Article type: Index
1974 Volume 7 Pages Toc2-
Published: 1974
Released on J-STAGE: May 18, 2023

DOIhttps://doi.org/10.19025/bnitk.7.0_Toc2

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[title in Japanese]

Article type: Index
1974 Volume 7 Pages Toc3-
Published: 1974
Released on J-STAGE: May 18, 2023

DOIhttps://doi.org/10.19025/bnitk.7.0_Toc3

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