Prof. Dr. Ir. Ridwan Yahya, M.Sc.

Prof. Dr. Ir. Ridwan Yahya, M.Sc.

Professor

Pulpwood quality, wood structure and anatomy

Education

2012 : Ph.D in Forestry, Kyoto University, Japan
2007 : M.Sc. in Forestry, University of the Philippines Los Banos, Philippines
2002 : B.Sc. in Forestry, University of Hasanuddin, Indonesia

Taught Course

1. Forest Products Technology
2. Wood Processing Technology
3. Wood Structure and Properties
4. Basic Properties of Wood
5. Pulp and Paper Technology

Publication

Yahya, R., Yansen, Y., Tazuru-Mizuno, S., & Sugiyama, J. (2020). Effect of vessel diameter
on variation of fiber morphology in Acacia mangium. IAWA Journal, 41(1), 2-11.
Yahya, R., Yansen, Mizuno, S.T. (2019). Fibre quality: Length and slenderness ratio of fibre
adjacent to small vessels of Acacia mangium. Journal of Tropical Forest Science 32(4):
355–360.
Silsia, D., & Yahya, R. (2019). Yields and characteristics of bintangur oil from Enggano island
as raw material for making biodiesel. Jurnal Agroindustri, 9(1), 1-7. (In Indonesian).
Yahya, R., Sundaryono, A., Horikawa, Y., & Sugiyama, J. (2017). Neighbourhood of vessels:
Chemical composition and microfibril angle of fibre within Acacia mangium. Journal of
Tropical Forest Science, 267-274.
Ishiguri, F., Aiso, H., Hirano, M., Yahya, R., Wahyudi, I., Ohshima, J., Iizuka, K., & Yokota,
S. (2016). Effects of radial growth rate on anatomical characteristics and wood properties
of 10-year-old Dysoxylum mollissimum trees planted in Bengkulu,
Indonesia. Tropics, 25(1), 23-31.
Yahya, R., Mucharromah, M., Silsia, D., & Septiana, S. (2016). Physical damages of wood
fiber in Acacia mangium due to biopulping treatment. Molekul, 11(1), 92-100. (In
Indonesian).

Yahya, R., Sundaryono, A., Imai, T., & Sugiyama, J. (2015). Distance from vessels changes
fiber morphology in Acacia mangium. IAWA Journal, 36(1), 36-43.
Yahya, R., Koze, K., & Sugiyama, J. (2011). Fibre length in relation to the distance from
vessels and contact with rays in Acacia mangium. IAWA Journal, 32(3), 341-350.
Yahya, R., K. Koze & J. Sugiyama. (2011). Serial optical micrograph as an alternative tool for
quantitative anatomical analysis of wood. Proceedings of the Wood Culture and Science.
6–9 August 2011, Kyoto, pp. 315-316.
Yahya, R., Sugiyama, J., Silsia, D., & Gril, J. (2010). Some anatomical features of an Acacia
hybrid, A. mangium and A. auriculiformis grown in Indonesia with regard to pulp yield
and paper strength. Journal of Tropical Forest Science, 343-351.
Yahya, R. 2010. Utilization of branches and bark of sengon (Paraserianthes falcataria (L.)
Nielsen) as raw material for pulp in an effort to reduce deforestation. Journal of
Environment (Bumi Lestari), 10(1): 75-81. (In Indonesian).