巻号一覧
前身誌
37 巻, 11 号
選択された号の論文の8件中1～8を表示しています
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安田 保彦1983 年 37 巻 11 号 p. 967-973
発行日: 1983/11/01
公開日: 2009/11/13
ジャーナル フリーOji Paper Tomakomai Mill put into use the Pulp Brightness Information System in August 1980. This system reduces opperation and quality fluctuations by supplying paper brightness forecast based on rapidly and accurately collected information using 3 IBM SERIES/1 Computers, which consists of pulp quantities, pulp brightness and paper brightness etc.
In addition, the Quality data Treatment System was put into use in November 1980. By using this system, we can execute the statistical treatment of data by combining simultaneously and organically a lot of laboratory test data and operation data, furthermore receive operation and laboratory reports automatically.抄録全体を表示PDF形式でダウンロード (6497K) -
SGW, RMP, CGP の技術動向山口 章1983 年 37 巻 11 号 p. 974-984
発行日: 1983/11/01
公開日: 2009/11/13
ジャーナル フリーThis paper deals with forcussing on the following articles.
1) General tendency in mechanical and high yield pulping technololy.
2) The state of the art in individual pulping processes, such as SGW, CGP and RMP抄録全体を表示PDF形式でダウンロード (1386K) -
木材科学委員会1983 年 37 巻 11 号 p. 985-990
発行日: 1983/11/01
公開日: 2009/11/13
ジャーナル フリーPDF形式でダウンロード (857K) -
1983 年 37 巻 11 号 p. 991
発行日: 1983/11/01
公開日: 2009/11/13
ジャーナル フリーPDF形式でダウンロード (42K) -
北越製紙 (株) 長岡工場北越製紙株式会社1983 年 37 巻 11 号 p. 992-998
発行日: 1983/11/01
公開日: 2010/01/29
ジャーナル フリーNagaoka Mill is located in Nagaoka city, the birthplace of Hokuetsu Paper Mills Co., Ltd. founded in 1907.
This mill started its operation as a board mill, and today produces a wide variety of high quality papers and specialty boards. The mill continues to move toward more profitable and stable higher added value products.
The mill site area is 170, 000 m2 and the number of employees is about 200.
The main products are as follows
Technical paper … abrasive base paper impregnated paper
Fancy paper …embossed paper, various colored paper, etc.
Others … thermal paper, reprographic paper
Specialty Board … vulcanized fiber, PASCO抄録全体を表示PDF形式でダウンロード (10682K) -
第3報 Initial Phase の影響について久保 元伸, 吉岡 英敏, 玉生 征人, 上埜 武夫1983 年 37 巻 11 号 p. 999-1004
発行日: 1983/11/01
公開日: 2009/11/13
ジャーナル フリーThe kraft cook can be divided into three stages so called initial phase, bulk delignification phase and final phase. The initial phase comprises the pulping treatment up to a temperature of about 150°C and results in dissolution of 2030% of the total amount of lignin. The rate of carbohydrates loss (rate constant ; KC) and the delignification rate (rate constant ; KL) during the initial phase and the bulk delignification phase are firts order with respect to carbohydrates and lignin content respectively, The value of KL/KC ratio for the initial phase is lower that for the bulk delignification phase. This indicates that the selectivity (carbohydrates yield at given kappa number) of kraft cooking can be improved by the cooking schedule in which the cooking temperature goes up to over 150°C as soon as possible. The above prediction is comfirmed by the kraft cooking carried out on matchstick-like wood chips so that liquor penetration and diffusion would not be rate-controlling steps.抄録全体を表示PDF形式でダウンロード (600K) -
田中 浩雄1983 年 37 巻 11 号 p. 1005-1010
発行日: 1983/11/01
公開日: 2009/11/13
ジャーナル フリーThe methods for rejection of salts interference on colloid titration are studied. The results are summarized asfollows.
1) The end point became appreciably clear by addition of chelating reagents such as EDTA and citric acid. But the practical value of this method was very small since it is difficult to decide the appropriate amount of chelating reagent.
2) The accuracy of colloid titration was remarkably improved by the removal of Ca2+ and SO42- which was done by centrifugation of the precipitate of CaF2 and BaSO4 formed by adding NaF and BaCl2. But the amounts of NaF and BaCl2 required for accurate analyses were restricted within the narrow range around the equivalent values of Ca2+ and SO42-.
3) The accuracy of colloid titration was improved very much by desalting by use of anion and cation exchange resins. Although a certain amount of some polyelectrolytes such as PAA and PEI were absorbed by the ion exchange resins, this problem was solved by use of the resins pretreated with the desired sample.抄録全体を表示PDF形式でダウンロード (841K) -
フェルジノールの塩素-二酸化塩素処理について大谷 慶人, 住本 昌之1983 年 37 巻 11 号 p. 1011-1017
発行日: 1983/11/01
公開日: 2010/01/29
ジャーナル フリーVarious oxo-derivatives having different oxidation stages were produced by the treatment of ferruginol with chlorine followed by chlorine dioxide (CD1) and all of them were proved to be directly responsible for difficulties in bleaching UKP from sugi woods (Cryptomeria japonica). The plausible reaction pathways for the products are given in Figure 4.
When the products obtained by the CD1 treatment of ferruginol are again treated with chlorine dioxide (CD1D2), apparent but not much reduction in yields of the coloured oxo-derivatives (4, 8, & 8') and the postulated precursors (7 & 5) for 8 & 8' compared to those of five compounds afforded by CD, can be observed. However, the reaction rate of any stage of chlorination, oxidation, and decomposition is slow enough to leave much amounts of harmful products of different oxidation stage even after the treatment CD1D2. The distinguished stabilities might be primarily attributed to unusually high steric hindrance around the phenolic group in the molecule of ferruginol and its derivatives. This explains the characteristic features of difficulties in bleaching sugi UKP by the method of conventional multi-stage bleaching of CED (or H) ED.抄録全体を表示PDF形式でダウンロード (777K)
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