Prof. Ir. Ridwan Yahya M.Sc., Ph.D

Prof. Ir. Ridwan Yahya M.Sc., Ph.D

Professor

Wood structure and properties, forest products technology, pulpwood quality, wood anatomy

Office address  : Department of Forestry, Faculty of Agriculture, University of Bengkulu

Email                 : ridwanyahya@unib.ac.id

Phone                : +62-812713833808

Education

2012    : Ph.D in Forestry, Kyoto University, Japan

2007    : M.S. in Forestry, University of the Philippines Los Banos, Philippines

2002    : B.S. in Forestry, University of Hasanuddin, Indonesia

 

Working Experience

1997 – present   : Teaching staff, Dept. of Forestry, Faculty of Agriculture, Univ. of Bengkulu

1993 –  1997     : Teaching staff, College of Forestry, Pante Kulu, Banda Aceh

 

Teaching

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

Research Interest

Wood structure and properties, forest products technology, pulpwood quality, wood anatomy

Awards, Grants, Scholarships

2021    : Certified international of applied research/ CIAR (Issued by Ministry of Education)

2019    : ID Patent: IDP000059548. Composition of materials to accelerate and reduce the                       temperature in the manufacturing of pulp and the methods of their manufacturing.

2019    : Certified international of research reviewer/ CIRR (Issued by Ministry of Education)

2017    : Visiting researcher, Kyoto University (Grants from Ministry of Education)

2016    : Visiting researcher, Kyoto University (Grants from Ministry of Education)

2014    : Visiting researcher, Kyoto University (Grants from Ministry of Education)

2005    : Visiting researcher, University of Tokyo (Aldritz, co and Wood Chemistry Lab.)

2004    : Visiting researcher, University of Tokyo (Grants from JSPS & MoE Indonesia)

 

Research Project
2022    : Variation of mangium fiber quality based on distance from small vehicle cells on the tangential and from body part using coress serial method sections as raw materials for the pulp industry. Funded by the Ministry of Education scheme of PDUPT.

2021    : Improvement of sengon branch waste quality as raw material for charcoal industry through the development of winged teapot solar drying technology. Funded by LPPM PNBP UNIB scheme of National Collaboration Research.

2019    : Introduction a novel method to investigate effect of vessel variation on fiber dimension in Acacia mangium. Funded by Ministry of Education, multi-years scheme of 2017-2019.

2015    : Development of fasile, quick & reliable technique to estimate variation of fiber properties in relation to the distance from vessel In Acacia mangium. Funded by Ministry of Education, multi-years scheme of 2014-2015.

2010    : Optimization of Phanerochaete chrysosporium fungus biocraft in an effort to reduce pollution levels and improve pulp quality of mixed sem and mangium branch waste.  Funded by the Ministry of Education.

2009    : Some anatomical features of an Acacia hybrid, A. mangium and A. auriculiformis grown in Indonesia with regard to pulp yield and paper strength. 2008-2009

2008    : Solutions to lack of raw materials and efficiency of pulp and paper production with biopulping pre-treatment in Acacia mangium branch waste. Funded by Ministry of  Education, multi-years scheme of 2007-2008.

2007    : Utilization of wood bending technology in the timber industry in Sunda Kelapa Village. Funded by LPPM PNBP UNIB.

 

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 mangiumIAWA 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).

Yahya, R., Mucharromah, D. Silsia. 2007. Effect of administration of Phanerochaete chrysosporium on changes in chemical components of mixed stem and mangium branch waste as pulp raw material. Jurnal Ilmu-Ilmu Pertanian Indonesia. No.2. (In Indonesian).

Yahya, R. 2001. Assessment on wood quality of Paraserianthes falcataria (L.) Nielsen for pulp and paper making. UNITAS vol.3. p. 1- 3. Los Banos, Philippines.

Yahya, R. 1998. The effect of tree age on the production of sap of Pinus merkusii Jungh et De Vries. Jurnal Penelitian UNIB, No 12. Universitas Bengkulu. (In Indonesian).

Yahya, R. and Eliyin. Emphasizing the forester existence in managing sustainable forest. Proceeding Symposium of Implementing Ecolabel in Production Forest. Jakarta 10 – 12 August 1995. p 359-363. (In Indonesian).

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