Download Improvement of Forest Resources for Recyclable Forest by Toshihiro Ona (auth.), Toshihiro Ona Ph.D. (eds.) PDF

By Toshihiro Ona (auth.), Toshihiro Ona Ph.D. (eds.)

It is an honor and enjoyment for me to jot down the foreword of this ebook comprising the of woodland assets for court cases of the Fourth Symposium at the development Recyclable wooded area items. The symposium used to be equipped via Dr. Toshihiro Ona, affiliate Professor on the Graduate college of Bioresource and Bioenvironmental Sciences, Kyushu collage, Japan, as a part of the "Development of wooded area assets with excessive functionality for Paper Recycling" study undertaking. This was once supported by way of the center examine for Evolutional technology and know-how (CREST) staff on the Japan technology and know-how organisation beginning (lST) and by way of Kyushu collage. As a colleague of Dr. Ona, I commend his efforts in organizing the symposium and enhancing this ebook. within the woodland, there's a multitude of assets, together with timber, natural vegetation, end result, fungi, mammals, birds, bugs, fishes, reptiles, water, landscapes, and vacationer sights. these days, even the surroundings is thought of as a type of woodland source. those assets gives you a range of wooded area items, reminiscent of trees for constructions, pulp and paper, charcoal, natural medicinal drugs, wild greens, animal protein, safe to eat mushrooms, and nonwoody fibers. From those assets, significant wooded area items are produced utilizing quite a few species of bushes. for instance, softwood is acceptable as construction fabric, whereas hardwood is acceptable for furnishings creation; pulp and paper are made out of either softwood and hardwood. for that reason, woodland destinations and wooded area administration tools may still range based on the tree species used for construction of alternative wooded area products.

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Leary, G. J. Tapp i J. 50 (1967) 17. Fiber Properties and Papermaking Potential of Recycled Acacia Pulp Takayuki Okayama", Yoko Kibatani", Kohei Nakayama", Yasuo Kojima b and Toshihiro Ona' "Graduate School ofAgr iculture, Tokyo University of Agricultu re and Technology, 3-5-8 Saiwai-cho, Fuchu, Tokyo 183-8509. Japan bGraduate School ofAgr iculture, Hokkaido University, N9-W9. Kita-ku, Sapp oro 060-8628. Japan "Graduate School of Bioresource and Bioenv ironmental Sciences. Kyushu University. Hakozaki, Higashi-ku , Fukuoka 812-8581 .

The zero-span tensile strength is primar ily related to the individual fiber as distingu ished from interfiber bonding. Figure 2 shows the mean zero-span tensile strength of Acacia hand sheets . The zero-span tensile indices were almost constant durin g recycling. The results imply that the change in tensile strength of handsheet during recycling is due to a less extent to decrease in the individual fiber strength . 1: ~ 60 E1 'iii cQ) 40 f- 20 o 3 4 6 Number of cycles Figure 1 Effect of recycling on tensile index of Ac acia handsh eets.

Clark, C. R. E. Appita 1. 53 (2000) 231. , Kojima, Y. and Ona, T. in this book . , Kato, T. and Ona , T. 1. Raman Spectrosc. 32 (2001) 389. Efron, B. "The Jackknife: the boostrap and other resamplin g plans", Society for industrial and applied mathematics, Philadelphia, PA ( 1982). Wold, S. Technometric 20 (19 78) 397. Chapter 2 Pulp and Paper Recycling Chemical Aspects of Photo-Yellowing of High-Yield Pulps Goran Gellerstedt and Liming Zhang Department ofFibre and Polymer Technology, Royal Institute ofTechnology, KTH, S-J00 44 Stockholm, Sweden Introduction High-yield pulps such as TMP and CTMP tum yellowish on exposure to daylight (photo-induced yellowing) or heat in the presence of moisture (thermal yellowing) .

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