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Volume 12, Issue 10
Displaying 1-12 of 12 articles from this issue
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[in Japanese]1958 Volume 12 Issue 10 Pages 634-636
Published: October 10, 1958
Released on J-STAGE: November 17, 2009
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[in Japanese], [in Japanese]1958 Volume 12 Issue 10 Pages 638-645
Published: October 10, 1958
Released on J-STAGE: November 17, 2009
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[in Japanese]1958 Volume 12 Issue 10 Pages 646-650
Published: October 10, 1958
Released on J-STAGE: November 17, 2009
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Manji Miwa1958 Volume 12 Issue 10 Pages 651-656
Published: October 10, 1958
Released on J-STAGE: November 17, 2009
JOURNAL FREE ACCESSThe production of food and fodder yeast from sulfite waste liquor has two important significances;they are the elimination of a source of river corruptions by this waste, and the collection and utilization of waste. Particularly, the latter lies in the possibility of using dilute waste liquor as for the raw material of yeast production. It is necessary to device a special equipment for aerating culture, because of the violent foaming property of sulfite waste liquor. It can be said that the Waldhof type fermentor is the most favourable equipment for this purpose. But, when this fermentor is used in the commercial scale, many particular designs are necessary on the details of this equipment. Generally, Torula species is suitable for the culture. This yeast grows rapidly and in good yield, and possesses a pentose assimilating property and moreover contains high protein. But the cell of this yeast is rather small, a considerable energy is required in the centrifuging process. The drier is a twin type dram drier.
This dried yeast crop is favourable for the foodstuff and fodder.View full abstractDownload PDF (1085K) -
Hideo Hata, Hitoshi Tonami, Akira Takagaki1958 Volume 12 Issue 10 Pages 657-659
Published: October 10, 1958
Released on J-STAGE: November 17, 2009
JOURNAL FREE ACCESSBartunek's “ M.W.” and “ S.W.” methods have been used to estimate the reactivity of pulp. In using this method, a number of question arise, because of the complexity of the properties of the pulps and the viscose production process.
The authors measured the “ S.W.” values with linter, sulphate, and sulphite-pulps, according to Bartunek's method.
In order to compare Bartunek's “ S.W.” value, with the solubility of xanthate from the normal viscose production process, we investigated the relation between this value and the sulphidity (γ-value) and the amount of crystalline fraction in the undissolved residue.View full abstractDownload PDF (164K) -
Yuichiro Sumi1958 Volume 12 Issue 10 Pages 660-664
Published: October 10, 1958
Released on J-STAGE: November 17, 2009
JOURNAL FREE ACCESSThe changes in the reactivity of dissolvin g pulp occured in the course of refining treatments were studied in detail. The reactivity of pulp was estimated by means of the emulsion xanthation method (the values of M-W and S-W proposed by Bartunek). In some cases the filter clogging constant (Kw) of viscose was determined, too. The results are as follows :
(1) The values of M-W and S-W of unbleached sulfite pulp decrease as the process of cooking ath ances. The decrease in the S-W value, however, is slight.
(2) By the hot alkali treatment the S-W value drops. This tendency is more remarkable when the viscosity of the original pulp is low. The stronger alkali treatemnt gives a little effect on the decre asing of the SW value of refined pulp (relative viscosity, 4.5). The stronger refining treatment makes the M-W value of pulp somewhat higher.
(3) In the hypochlorite treatment of the pulp refined by hot alkali, the values of M-W and S-W decrease proportionally with the decrease of viscosity of the pulp. The reactivity of the pulp is influenced by its relative viscosity, but not by the strength of hypochlorite treatment.
(4) The clogging constant (Kw) of viscose prepared from the refined pulp drops as the hypochlorite treatment of Pulp advances. The value is not influenced directly by the relative viscosity of pulp.View full abstractDownload PDF (755K) -
Kunio Higuchi1958 Volume 12 Issue 10 Pages 665-669
Published: October 10, 1958
Released on J-STAGE: November 17, 2009
JOURNAL FREE ACCESSAs the example of hardwood pulp, for the most part the hardwood sulphate bleached pulp was investigated about its strength development through beating action comparing with the other pulp both in the labolatory and mill scale.
The improvement of the inferiority of short fiber length specific to the hardwood pulp was discussed in connecting with the cutting resistance. The sulphate pulp has much cutting resistance than sulphite pulp, therefore after beating the fiber length distribution of the hardwood sulphate bleached pulp was similar with the softwood sulphite bleached pulp. This will manifest the character of the strength development of the former through beating to some extent. On the other side, each beating equipment had the specific character of cutting action.
Finally we proved that the fiber length had the secondary effect upon the strength which was made and the primary effect was the interfiber bonding of the fiber with the excepting of the tearing strength.View full abstractDownload PDF (910K) -
[II]The Cooking of the Stalk of Rape-seed by Sulphite MethodSaburo Isa1958 Volume 12 Issue 10 Pages 670-674
Published: October 10, 1958
Released on J-STAGE: November 17, 2009
JOURNAL FREE ACCESSI reported the cooking of the stalk of Rape-seed by sulphate method and concluded that the pulp was easy to wet beating and as strong as hard wood pulps.
So in this paper, I try pulping of it by sulphite method. The concentration of cooking liquor is 0.03 mol sulphite and 0.4 mol. bisulphite and base is Na or Mg. Optimum digestion time is 180 minutes at 165°C for both bases. Steeping time is enough 60 minutes at 110°C for Na base but is neccessary at least 90 minutes at the same temperature for Mg base. Pulp yield is about 46% for easy bleach and 5359% for strong pulp. And these results are better than rice and barley straw.View full abstractDownload PDF (948K) -
[in Japanese]1958 Volume 12 Issue 10 Pages 675-677
Published: October 10, 1958
Released on J-STAGE: November 17, 2009
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[in Japanese]1958 Volume 12 Issue 10 Pages 678-683
Published: October 10, 1958
Released on J-STAGE: November 17, 2009
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[in Japanese]1958 Volume 12 Issue 10 Pages 684-686
Published: October 10, 1958
Released on J-STAGE: November 17, 2009
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[in Japanese]1958 Volume 12 Issue 10 Pages 687
Published: October 10, 1958
Released on J-STAGE: November 17, 2009
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