電子顕微鏡

粘土鉱物の研究として電子顕微鏡の応用

河島千尋

1951 年 2 巻 1 号 p. 9-15
発行日: 1951/07/01
公開日: 2009/06/12

DOIhttps://doi.org/10.11410/kenbikyo1950.2.9

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ウィールスの活性と"その"電子光学像

福見秀雄, 内田久雄

1951 年 2 巻 1 号 p. 16-20
発行日: 1951/07/01
公開日: 2009/12/09

DOIhttps://doi.org/10.11410/kenbikyo1950.2.16

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シャドウイング法について

土倉秀次, 岡田重文

1951 年 2 巻 1 号 p. 21-26
発行日: 1951/07/01
公開日: 2009/06/12

DOIhttps://doi.org/10.11410/kenbikyo1950.2.21

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対物電子レンズ用絞り板について

日比忠俊, 高橋昭一

1951 年 2 巻 1 号 p. 27-29
発行日: 1951/07/01
公開日: 2009/06/12

DOIhttps://doi.org/10.11410/kenbikyo1950.2.27

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Relative resolving power of electron microscope using Ag, Cu, brass, Al etc. for slit material of objective electron-lens was determined from degree of roundness of corners of MgO crystal. Each slit was 9/100 mm thick and 1/10 mm dia.
It was found that (i) Ag slit had the best resolving power (ii) lowering of resolving power due to contamination of a slit was mainly attributed to the disturbance of electrostatic field by charge up of electrons, and also (iii) Au slit was the most suitable one for continuous working of electron-microscope.

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ラップ仕上の電子顕微鏡的研究

高橋昇, 浅枝敏夫

1951 年 2 巻 1 号 p. 30-32
発行日: 1951/07/01
公開日: 2009/12/09

DOIhttps://doi.org/10.11410/kenbikyo1950.2.30

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The intrinsic nature of lapping operation consists in a minute cutting action in wet lapping and a surface flow in dry lapping. In wet lapping the surface is yet crystalline; the operation is carried out by the abrasive particles embedded in the lap and those rolling and splitting between two frictional surfaces. In dry lapping the surface is generally amorphous and the operation progresses by the abrasive particles only embedded in the lap. Chips then produced become more and more minute in the progress of operation and their mean size amounts to 0.02 μ at the final stage.

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定電流装置の性能について

高橋勘次郎

1951 年 2 巻 1 号 p. 33-35
発行日: 1951/07/01
公開日: 2009/12/09

DOIhttps://doi.org/10.11410/kenbikyo1950.2.33

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This paper gives the analysis or a simple degenerative current stabilizer circuit commonly used in exciting current sources for electron microscopes.
Upper limit of the stabilizer action are derived, and a few methods to improve the action are described.

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静電レンズの電場及び焦点距離

(前後非対称レンズを含む)

若木精一

1951 年 2 巻 1 号 p. 36-38
発行日: 1951/07/01
公開日: 2009/06/12

DOIhttps://doi.org/10.11410/kenbikyo1950.2.36

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The electric fields in the static electron lens, including an asymmetric lens, are calculated more accurately than ordinary methods by employing the mirror image method. Adopting the fields thus calculated the electron path, focal length and focal point are calculated. Further, new conventional method to calculate the chromatic abberation coefficients are also repo ted.

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電子顕微鏡像におけるフレネルフリンチについて

森戸望

1951 年 2 巻 1 号 p. 39-41
発行日: 1951/07/01
公開日: 2009/06/12

DOIhttps://doi.org/10.11410/kenbikyo1950.2.39

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Eresnel fringes in the electron microscope imag's have been theoretically investigated.
In the present paper Fresnel fringes at the parallel illumination and the influences of the variation of the accelerating voltage and the angular aperture of illumination on Fresnel fringes are calculated. Angular aparture of illumination as well as voltage variation prevents clear appearance of Fresnel fringes. It is expected thct the aberrations of the objectiva may have same influences. Though Fresnel fringes are undesirable, they can be used to measure the resolving power of the electron microscope and the astigmatism of the objective.

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緑色印画用写真乳剤の粒子について

大山泰

1951 年 2 巻 1 号 p. 42-43
発行日: 1951/07/01
公開日: 2009/06/12

DOIhttps://doi.org/10.11410/kenbikyo1950.2.42

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Sizes and shapes of silver halide grains of so-called "greenish emulsion" and its developed silver grains, were examined under electron microscops.
Undeveloped grains of this emulsion are almost comparable with (or even smaller than) those of Lippmann plate, and developed silver grains, even in case of strong development with uretol-hydroquinone, arc very fine (about 20mμ in me n diam ter) and have granular from, not worm- or thread-like as Lippmann plate.
From this remarkable character, it is inferred that the emulsion of this type will be more suitable for making super fine grain sensitive materials.

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細菌性ヴィールスの電子顕微鏡的研究

寺田正中

1951 年 2 巻 1 号 p. 44-46
発行日: 1951/07/01
公開日: 2009/06/12

DOIhttps://doi.org/10.11410/kenbikyo1950.2.44

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For years we have been taking up the study of viruses by the electron microscope, and we succeeded in verifying by our systematic studies on Bacterial Viruses (Bacteriophages) such as those of S. dysenteriae, S. enteritidis (Gartner), S. paratyphi A and B. E. typosa, S. typhi murium, S. cholerae suis, S. sendai, S. gallinarum and S. abortus, equi. We have inquired into the morphology of the viruses and the relations between bacterial virus and the host cell: especially in regard to the multiplication way of virus which has been considered as one of the fundamental problems on virus study, having, been remaining unditermined up-to-date, we could get some interesting results.

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赤血球膜の組織構造と物理化学的性質について

丹野楯彦

1951 年 2 巻 1 号 p. 47-49
発行日: 1951/07/01
公開日: 2009/06/12

DOIhttps://doi.org/10.11410/kenbikyo1950.2.47

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From the electron microscopic studies on the membrane of red blood cell, it is assumed that the membrane of red blood cell is composed of two kinds of colloida layers. (Fig. 2 and Photo. 1-4)
It is considered that haemolytic process and permeability of red blood cell are dependent on the colloidal structure and the colloidal state of red cell membrane, which are controlled by the cornpositon of solutes in surrounding medium.

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歯牙硬組織の電子顕微鏡的研究

土倉秀次, 田熊庄三郎

1951 年 2 巻 1 号 p. 50-52
発行日: 1951/07/01
公開日: 2009/06/12

DOIhttps://doi.org/10.11410/kenbikyo1950.2.50

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The microstrucutures of human tooth enamel "and dentine which are reveald on the methylmethacrylate aluminium replicas are descrived in this paper. In conformity with these finding findings, a destructive mechanism of enamel surface caused by the dental caries is discussed, and some typical electron micrographs are presented to demonstrate the various stages of enamel caries.

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溶血現象の細胞生理学的研究

低滲透圧溶血の様式について(その1)

万井正人

1951 年 2 巻 1 号 p. 53-55
発行日: 1951/07/01
公開日: 2009/12/09

DOIhttps://doi.org/10.11410/kenbikyo1950.2.53

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The hemolysis in the distilled water are classified in three types by the investigation under the phase contrastand electron microscope.
I type: Content of erythrocytes burst out from a large hole. Their membrane seems to be homogenous, and remains in folds and ruptured lines.
II type: Cytoplasm flows out from several holes. The plasma membrane appear generally homogenous, and there are several holes and occasional folds.
III type: The protoplasm vozes uniformly out from all parts of the cell area. The membrane shows the meshy appearance and the granular structure.
Even in the membrane of I and II type, the granular structure is sometimes seen.
The condition csused to those three tunes were seemed to be follows.
1) Speed of the osmotic action. 2) Nature of the red blood cells. 3) Conditions of medium.

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分離染色糸の電子顕微鏡的観察

水田安一

1951 年 2 巻 1 号 p. 56-58
発行日: 1951/07/01
公開日: 2009/06/12

DOIhttps://doi.org/10.11410/kenbikyo1950.2.56

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The thread-like bodies isolated from human leucocyte nuclei and carp erythrocyte nuclei have been investigated by means of the electron microscope and with the aid of microchemical stainings.
1. The thread-like bodies are composed of two kinds regarding the density to the electron beam, that is, the proximal opaque chromatin granules and the distal less opaque thread.
2. The chromatin thread is camposed of a pair of small coiled chromonemata which are coalesced into a double-stranded or pseudosinglestranded spiral which frequently gives a triple helix.
3. The chromonemata is consisted of at least four chromofibrils of approximately 5-10 mμ in diameter.

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