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Volume 44, Issue 6
Displaying 1-6 of 6 articles from this issue
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[in Japanese]1965 Volume 44 Issue 6 Pages 447-448
Published: June 20, 1965
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSDownload PDF (283K) -
Kenichi Yamamoto1965 Volume 44 Issue 6 Pages 449-457
Published: June 20, 1965
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSIn these days when it seems as if the steam engine of the 19 th century and the reciprocating type internal combustion engine have been developed to their peaks in all aspects, development of revolutionary engines based on principles entirely different from those of the conventional engines are being carried out actively?-aiming at an engine to be handed over to the next century.The following is a description of the NSU-Wankel rotary piston engine, which is said to be taking the lead in the development for industrialization among the various types of rotary piston engines, outlining the progress of development, principle, structure, and function of this distinctive engine.View full abstractDownload PDF (1346K) -
Kunikazu Shiraishi1965 Volume 44 Issue 6 Pages 458-472
Published: June 20, 1965
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSIn Japan, the free piston gas turbine has recenthy been put into practical operation as a 1, 500-12, 000kW generator or a simultaneous generator of both etectric power and steam, and its future is very promising.
This paper describes in detail the development, principle, structure and character-istics of the turbine.View full abstractDownload PDF (1869K) -
Naochika Torikai, Tatsuya Kado1965 Volume 44 Issue 6 Pages 473-481
Published: June 20, 1965
Released on J-STAGE: February 23, 2011
JOURNAL FREE ACCESSIn order to study the properties of petrographic constituents on Japanese coals, the wet oxidations were carried out on the carbonized specimens prepared from various kinds of petrographic constituents of coals over the range from brown coal to coking coal, such as Joban, Mitsui-Bibai, Akabira, Oyubari, Yatake.
Samples were obtained by the following methods;
The coal specimens were pulverized to pass through a 30 Tyler mesh sieve, and separated into some fractions in specific gravity between 1.25-4.50 by the float-and-sink method using mixtures of benzene and carbon tetrachloride.Then, these specimens were carbonized at 1, 000°C, and were repulverized to pass through a 200 and stand a 300 Tyler mesh sieve.
The wet oxidation of these specimens were carried out in the phosphoric acid solution of potassium dichromate, and their reactivities were compared by measuring the volume of carbon dioxide evolved as a function of time.
In the results of petrographic analysis, the contents of vitrite decreased and mineral-durite increased, as the specific gravity of the fraction increased.
The reactivity of carbonized specimen depended upon the content of mineral-durite, since the more mineral-durite showed the higher reactivities.
Other than the results mentioned above, no correlations could be observed between the petrographic constituents of coals and their reactivities of carbonized specimens.View full abstractDownload PDF (907K) -
Kozo Kurokawa1965 Volume 44 Issue 6 Pages 482-486
Published: June 20, 1965
Released on J-STAGE: February 23, 2011
JOURNAL FREE ACCESSPolymerization of acrylonitrile under Oxo conditions was initiated by the coexistenle of cohalt salt and pd-zeolita over 100°C and 30 atm.and accelerated in the presenle of Carbon tetrachloride.A very small amount of Cohalt salt was fully efficient as a calatyzer but further amounts gave no apparent effect on the yield of polymer, which was affected by the amount of pd-zeolite.View full abstractDownload PDF (700K) -
1965 Volume 44 Issue 6 Pages 490-495
Published: June 20, 1965
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSDownload PDF (851K)
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