Oyo Buturi
Online ISSN : 2188-2290
Print ISSN : 0369-8009
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Volume 47, Issue 12
Displaying 1-15 of 15 articles from this issue
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  • [title in Japanese]
    Mitsuyoshi SHIMAZU
    1978 Volume 47 Issue 12 Pages 1095
    Published: December 10, 1978
    Released on J-STAGE: February 09, 2009
    DOIhttps://doi.org/10.11470/oubutsu1932.47.1095
    JOURNAL FREE ACCESS
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  • Structure and Properties of Synthetic Polypeptides
    Kunio HIKICHI
    1978 Volume 47 Issue 12 Pages 1096-1111
    Published: December 10, 1978
    Released on J-STAGE: April 02, 2009
    DOIhttps://doi.org/10.11470/oubutsu1932.47.1096
    JOURNAL FREE ACCESS
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    Structure and properties of synthetic polypeptides in the solid state were discussed. Various conformations of polypeptides were reviewed. A stable 7/2 distorted α-helix was presented for poly [γ-(p-chlorobenzyl L-glutamate)]. Side-chain conformations were also discussed. Allowed conformations of the side chain of poly(γ-benzyl L-glutamate) (PBLG) were searched by computer simulation. Unindexed reflections of the α-helix were discussed in conjunction with the 1.5 A reflection. Magnetic resonance including NMR and ESR was applied to study molecular motions occurring in polypeptides. Dynamic mechanical and dielectric dispersions of PBLG in the vicinity of room temperature were interpreted in terms of side-chain motions and structural characteristics of PBLG. X-ray measurements were made to obtain thermal expansion of the side-chain region and fluctuation of the α-helix. The blended mixture of PBLG and its D body was also studied.
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  • Coherent Phenomena in Multi-Level NMR System
    Tsuneo HASHI, Hiroshi HATANAKA
    1978 Volume 47 Issue 12 Pages 1112-1126
    Published: December 10, 1978
    Released on J-STAGE: February 09, 2009
    DOIhttps://doi.org/10.11470/oubutsu1932.47.1112
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    Local coherent transient phenomena associated with two-quantum (photon) coherence in a multi-level NMR system are reviewed. Stepwise excitation and detection as well as two-quantum excitation of the coherence are described. Attention has been paid on some parallels and differences between coherent phenomena in NMR and quantum optics. A brief description of the new coherent phenomena which we found is also given.
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  • Calibration of Gas Flowmeters
    Kamekichi SHIBA, Jin-ichi KITAMURA
    1978 Volume 47 Issue 12 Pages 1127-1132
    Published: December 10, 1978
    Released on J-STAGE: February 09, 2009
    DOIhttps://doi.org/10.11470/oubutsu1932.47.1127
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    For gaseous substances, mass flowrate is more essential than volumetric flowrate because the measurement of density at a point is very difficult. Strictly speaking, flowrate of a gas is not known until its mass flowrate has been obtained.
    The method of calibration of gas flowmeters at present is to utilize the critical flow in a flow nozzle, the so-called sound-velosity nozzle. However, this method of calibration meets with considerable difficulties.
    In addition to the sound-velosity nozzle method, there exists a method of calibration using a movable-tube flowmeters. Absolute measurements of the flowrate of a gas can be accomplished with a movable-tube flowmeter and therefore it enable us to calibrate other gas flowmeters. However, this method also involves some difficulties.
    The objective of this paper is to discuss and compare the above two methods of calibr-ation, from the standpoint of calibration of gas flowmeters. It is concluded that the movable-tube flowmeter is more reliable than that of the sound-velosity nozzle.
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  • Neutralization of Mobile Ions in Insulating Film of MIS Structure
    Ken YAMASHITA, Futao KANEKO, Taro HIND
    1978 Volume 47 Issue 12 Pages 1133-1139
    Published: December 10, 1978
    Released on J-STAGE: February 09, 2009
    DOIhttps://doi.org/10.11470/oubutsu1932.47.1133
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    The behavior of mobile Na+ ions in thermally grown SiO2 film is investigated by using thermally stimulated currents (TSC), thermally stimulated surface potentials (TSSP) and capacitance-voltage (C-V) characteristics. The samples used in the experiments are Al-SiO2-Si, MIS diodes. Results obtained by above three methods cannot be interpreted sufficiently by ionic space charge polarization due to Na+ ions, After bias-temperature (B-T) stress, the shift of the flat-band voltage does not correspond to the depolarization charge in TSC. Further, TSSP is not observed in the temperature region of one of the TSC peaks. These phenomena are considered to be caused by neutralization and ionization of some part of the mobile ions at the insulator-semiconductor (or metal) interface by B-T stress. Estimations of parameters related to the ionic space charge are discussed in the case that charge exchange occurs at the insulator-semiconductor (or metal) interface.
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  • Image Restoration of TEM Micrographs of Weak-Phase Object Using Computer
    Koji KONDO, Nobuyoshi NAKAJIMA, Yoshiki ICHIOKA, Tatsuro SUZUKI
    1978 Volume 47 Issue 12 Pages 1140-1148
    Published: December 10, 1978
    Released on J-STAGE: February 09, 2009
    DOIhttps://doi.org/10.11470/oubutsu1932.47.1140
    JOURNAL FREE ACCESS
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    An attempt has been made to correct electron micrographs by using a digital method. A new algorithm to estimate the parameters of CTF has been developed which is based on the calculation of the diffractogram of the electron micrographs and the technique of smooth-ing and differentiation of data based on the least squares method. Suitability of the algorithm is shown through the computer simulation of image restoration by Wiener filtering in which the estimated CTF is inserted. This algorithm has been applied to the actual electron mic-rographs of carbon foils, and image restoration has been carried out successfully. The exp-erimental results for these images are shown. The feature of the digital method of image restoration adopted here is that it can compensate the combined effects of spherical aberration, defocusing, astigmatism, and chromatic aberration, simultaneously, which is almost impossible to realize when the optical method is used alone.
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  • [title in Japanese]
    Tadashi SHIOSAKI, [in Japanese]
    1978 Volume 47 Issue 12 Pages 1149
    Published: December 10, 1978
    Released on J-STAGE: February 09, 2009
    DOIhttps://doi.org/10.11470/oubutsu1932.47.1149
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    [in Japanese], [in Japanese], [in Japanese]
    1978 Volume 47 Issue 12 Pages 1150
    Published: December 10, 1978
    Released on J-STAGE: February 09, 2009
    DOIhttps://doi.org/10.11470/oubutsu1932.47.1150
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    [in Japanese], [in Japanese]
    1978 Volume 47 Issue 12 Pages 1151
    Published: December 10, 1978
    Released on J-STAGE: February 09, 2009
    DOIhttps://doi.org/10.11470/oubutsu1932.47.1151
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    [in Japanese], [in Japanese], [in Japanese]
    1978 Volume 47 Issue 12 Pages 1152
    Published: December 10, 1978
    Released on J-STAGE: February 09, 2009
    DOIhttps://doi.org/10.11470/oubutsu1932.47.1152
    JOURNAL FREE ACCESS
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  • Lattice Defects and Chemical Bonds in Zero-Gap Semiconductors
    Kenji KUMAZAKI, Akira ODAJIMA
    1978 Volume 47 Issue 12 Pages 1153-1158
    Published: December 10, 1978
    Released on J-STAGE: February 09, 2009
    DOIhttps://doi.org/10.11470/oubutsu1932.47.1153
    JOURNAL FREE ACCESS
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  • Amorphous High Dielectric Materials
    Noboru TSUYA, Ken-Ichi ARAI
    1978 Volume 47 Issue 12 Pages 1159-1161
    Published: December 10, 1978
    Released on J-STAGE: February 09, 2009
    DOIhttps://doi.org/10.11470/oubutsu1932.47.1159
    JOURNAL FREE ACCESS
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  • Applications of Piezoelectric Polyvinylidene-Fluoride Film to Electroacoustic Devices
    Noriyoshi CHUBACHI, Masahiko TAMURA
    1978 Volume 47 Issue 12 Pages 1162-1165
    Published: December 10, 1978
    Released on J-STAGE: February 09, 2009
    DOIhttps://doi.org/10.11470/oubutsu1932.47.1162
    JOURNAL FREE ACCESS
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  • Crystal Growth by a Lamp-Image Type Floating-Zone Furnace
    Humihiko TAKEI
    1978 Volume 47 Issue 12 Pages 1166-1169
    Published: December 10, 1978
    Released on J-STAGE: February 09, 2009
    DOIhttps://doi.org/10.11470/oubutsu1932.47.1166
    JOURNAL FREE ACCESS
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  • Low Insertion Loss Acoustic Surface Wave Filters
    Kazuhiko YAMANOUCHI, Kimio SHIBAYAMA
    1978 Volume 47 Issue 12 Pages 1170-1175
    Published: December 10, 1978
    Released on J-STAGE: February 09, 2009
    DOIhttps://doi.org/10.11470/oubutsu1932.47.1170
    JOURNAL FREE ACCESS
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