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Volume 38, Issue 2
Displaying 1-10 of 10 articles from this issue
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1984 Volume 38 Issue 2 Pages 08
Published: 1984
Released on J-STAGE: November 19, 2009
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Akira Yamaguchi1984 Volume 38 Issue 2 Pages 153-165
Published: February 01, 1984
Released on J-STAGE: November 19, 2009
JOURNAL FREE ACCESSThis paper deals with forcussing on the following articles.
(1) Reviewal on the modification of sulfite and soda pulping processes.
(2) AQ in the pulping liquor accelerated both sulfite and soda delignification and improved pulp yield.View full abstractDownload PDF (2076K) -
Shigenori Kuga1984 Volume 38 Issue 2 Pages 166-173
Published: February 01, 1984
Released on J-STAGE: November 19, 2009
JOURNAL FREE ACCESSAttempts to prepare chromatographic column packing materials from cellulose have been surveyed and classified in terms of the methods of dissolution and particle formation. Gel filtration tests of the commercial and the laboratory-made cellulose packings proved their utility as the substitutes for the conventional gel materials such as crosslinked dextran or agarose gels. They are also useful in partition, adsorption and affinity chromatographies or as the substrate for enzyme immobilization because of their mechanical and chemical stability, high porosity and abundance of accessible hydroxyl groups.View full abstractDownload PDF (6285K) -
[in Japanese]1984 Volume 38 Issue 2 Pages 174-195
Published: February 01, 1984
Released on J-STAGE: November 19, 2009
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-Tomakomai Mill, Oji Paper Co., Ltd.-Oji Paper Co. Ltd.1984 Volume 38 Issue 2 Pages 196-208
Published: February 01, 1984
Released on J-STAGE: February 22, 2010
JOURNAL FREE ACCESSTomakomai mill of Oji Paper Co., Ltd. in Hokkaido island started its operation in 1910 to manufacture newsprint from sulphite pulp and groundwood pulp.
Through gradual modernization of newsprint machines, including remodeling into twin-wire type, annual production capacity of 11 machines in operation exceeds 1 million metric tons. The mill is the largest newsprint producing mill in the world.
The annual production last year was about 920, 000 metric tons of which 82% was newsprint and remaining 18% was low grade, medium grade printing paper and rotogravure paper.
The mill has pulping facilities of high yield sulphite, thermomechanical, refinermechanical, groundwood, chip-groundwood and deinked pulps. Kraft pulps is mainly purochased from Ebetsu mill of Oji Paper Co., Ltd. TMP is imported from the joint venture company in New-Zealand.
The mill area is about 540, 000m2 and the employees are about 1, 500.View full abstractDownload PDF (21378K) -
Atsushi Tamai, Atsumi Nishida, Tadakazu Hiroi1984 Volume 38 Issue 2 Pages 209-214
Published: February 01, 1984
Released on J-STAGE: November 19, 2009
JOURNAL FREE ACCESSCultivation of Shiitake, Lentinus edodes, is very popular, and about five to seven hundred thousand tons of bed logs are abandoned as waste bed logs every year. In oder to find the effective utilization of these waste bed logs, trials to convert them to monomeric sugar by enzymatic hydrolysis and to produce kraft pulp were carried out.
The results obtained are ;
1) The type of decay was different between W 4 and 465. The former was an intermediate between white-rot and brown-rot, whereas the latter was typical white-rot.
2) The rate of cellulase hydrolysis of bed logs decayed by 465 was fairly high and with the combination of treatment with dilute ammonia solution, the saccharification rate reached up to 43%.
3) Qualities of the kraft pulps prepared from the waste bed logs were poor especially in folding endurance and tear factor.View full abstractDownload PDF (829K) -
Effect of Alkali Soaking and Oxygen Cooking Conditions on Pulping of Rice StrawKunio Tosaka, Jisuke Hayashi1984 Volume 38 Issue 2 Pages 215-223
Published: February 01, 1984
Released on J-STAGE: February 22, 2010
JOURNAL FREE ACCESSIn this paper, various alkali soaking and oxygen cooking conditions were studied to product pulp front rice straw by the use of alkali oxygen pulping process and the following results were obtained.
(1) The rice straw were treated with 23% NaOH solutions in the range of 2040°C soaking temperature at 60 in as alkali soaking conditions and were squeezed 2 times them, next soaking samples were cooked by the oxygen cooking process. The pulp obtained by this alkali-oxygen pulping process were evaluated high strength properties and whiteness in handsheets compared with them of pulp obtained by other alkali soaking conditions.
(2) Further, the pulp having high strength properties and whiteness in handsheets were obtained by the conditions that rice straw were soaked 40% NaOH solutions and 2030 times for liquid ratio based on ovendry samples at 40°C and then they were cooked with oxygen cooking process after were squeezed 2 times them.
(3) The appropriate oxygen cooking conditions after alkali soaking were recognized at the range of 25 kg/cm2 for initial oxygen pressure and for oxidative time of 60 minutes at 120°C.View full abstractDownload PDF (1482K) -
1984 Volume 38 Issue 2 Pages 224
Published: February 01, 1984
Released on J-STAGE: November 19, 2009
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Development of a Package Software for the Colloid Titration Method using the Structured Programming TechniqueFumihiko Onabe1984 Volume 38 Issue 2 Pages 225-234
Published: February 01, 1984
Released on J-STAGE: November 19, 2009
JOURNAL FREE ACCESSA package software for the colloid titration method was developed and examples of applications to actual experimental data are presented. Efficiency of software development was enormously improved by introducing a floppy disk unit as an external memory device instead of a cassette tape recorder used in Part. I. However, user's free RAM area was reduced to ca. 19 KB (B : Bytes) compared with the previous cassette-based system (ca. 27 KB). To cope with the decreased RAM area, the structured programming technique was adopted. That is, the whole programme consists of 9 small modules and each module is structured in itself in some cases. These 9 modules are chained to the main control module which is designed to be loaded automatically from the floppy disk file into the microcomputer only by switching on the system. Installation of a hard copy ROM made possible the output of screen images on printer. This system was found to facilitate the data processing by visual judgement of the results and improved to a greater extent the total throughput of the data processing.
Problems associated with applications of the colloid titration technique to wet end chemistry is described in detail.
This paper is the second part of the presentation at the “1981 Papermaking Conference” sponsored jointly by J. TAPPI and CPPA (October 1981, Tokyo).View full abstractDownload PDF (1574K) -
1984 Volume 38 Issue 2 Pages e1
Published: 1984
Released on J-STAGE: November 19, 2009
JOURNAL FREE ACCESSDownload PDF (22K)
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