Sheikh Ali Ahmed

Universitetslektor

Institutionen för skog och träteknik Fakulteten för teknik

sheikh.ahmed@lnu.se

0470-76 74 92

072-501 44 15

Undervisning

Jag jobbar som lärare på flera kurser i grund- och avancerad nivå, främst med fokus på träegenskaper, träets anatomi, impregnering av trä, träskydd och forskningsmetodik.

Forskning

Mina forskningsintressen fokuserar på träets anatomi, modifiering och träskydd, med särskild tonvikt på miljövänliga metoder för trämodifiering. Jag är även intresserad av icke-destruktiv utvärdering av trä och träbaserade kompositer.

Mina forskargrupper

Skogens produkter (Forest Products) Forskningsområdet Skogens produkter bedriver spetsforskning inom området produkter från skogen. Verksamheten behandlar råvaror, biprodukter och produktionsprocesser…

Mina pågående forskningsprojekt

Mina avslutade forskningsprojekt

Publikationer

Artikel i tidskrift (Refereegranskat)

Bütün Buschalsky, F.Y., Imken, A.A.P., Adamopoulos, S., Ahmed, S.A., Plinke, B., et al. (2025). Geometric changes of TMP fibres due to thermo-hydrolytic disintegration of waste MDF evaluated by three fibre analysers. Wood Material Science & Engineering. 20 (5). 1057-1065.
Status: Publicerad
Ahmed, S.A., Tondi, G., Hosseinpourpia, R. (2025). Durability of tannin-citric acid modified Scots pine against weathering and fungal exposures. Holzforschung.
Status: Epub för tryck
Ahmed, S.A., Hosseinpourpia, R., Adamopoulos, S. (2023). Micro-Fibrillated Cellulose in Lignin–Phenol–Formaldehyde Adhesives for Plywood Production. Forests. 14 (11).
Status: Publicerad
Sivrikaya, H., Hosseinpourpia, R., Ahmed, S.A., Adamopoulos, S. (2022). Vacuum-heat treatment of Scots pine (Pinus sylvestris L.) wood pretreated with propanetriol. Wood Material Science & Engineering. 17 (5). 328-336.
Status: Publicerad
Ahmed, S.A., Hosseinpourpia, R., Brischke, C., Adamopoulos, S. (2022). Anatomical, Physical, Chemical, and Biological Durability Properties of Two Rattan Species of Different Diameter Classes. Forests. 13 (1).
Status: Publicerad
Jiang, W., Hosseinpourpia, R., Biziks, V., Ahmed, S.A., Militz, H., et al. (2021). Preparation of Polyurethane Adhesives from Crude and Purified Liquefied Wood Sawdust. Polymers. 13.
Status: Publicerad
Sjökvist, T., Blom, Å., Ahmed, S.A. (2020). Liquid water absorption in coated Norway spruce : Impact of heartwood, sapwood, density and weather exposure. MADERAS : Ciencia y Tecnología. 22 (3). 335-346.
Status: Publicerad
Bobadilha, G.S., Stokes, C.E., Kirker, G., Ahmed, S.A., Ohno, K., et al. (2020). Effect of exterior wood coatings on the durability of cross-laminated timber against mold and decay fungi. BioResources. 15 (4). 8420-8433.
Status: Publicerad
Ahmed, S.A., Adamopoulos, S., Li, J., Kovacikova, J. (2020). Prediction of mechanical performance of acetylated MDF at different humid conditions. Applied Sciences. 10 (23). 1-16.
Status: Publicerad
Ahmed, S.A., Adamopoulos, S., Poggi, F., Walther, T. (2020). Resonance and time-of-flight methods for evaluating the modulus of elasticity of particleboards at different humid conditions. Wood research. 65 (3). 365-380.
Status: Publicerad
Van Blokland, J., Adamopoulos, S., Ahmed, S.A. (2020). Performance of thermally modified spruce timber in outdoor above-ground conditions : Checking, dynamic stiffness and static bending properties. Applied Sciences. 10 (11). 1-25.
Status: Publicerad
Hemmilä, V., Adamopoulos, S., Hosseinpourpia, R., Ahmed, S.A. (2019). Ammonium Lignosulfonate Adhesives for Particleboards with pMDI and Furfuryl Alcohol as Crosslinkers. Polymers. 11 (10). 1-17.
Status: Publicerad
Ahmed, S.A., Adamopoulos, S. (2018). Acoustic properties of modified wood under different humid conditions and their relevance for musical instruments. Applied Acoustics. 140. 92-99.
Status: Publicerad
Ahmed, S.A., Morén, T., Sehlstedt-Persson, M., Blom, Å. (2017). Effect of oil impregnation on water repellency, dimensional stability and mold susceptibility of thermally-modified European aspen and downy birch wood. Journal of Wood Science. 63 (1). 74-82.
Status: Publicerad
Wang, X.A., Björnberg, J., Hagman, O., Ahmed, S.A., Wan, H., et al. (2016). Effect of Low Temperatures on the Block Shear Strength of Norway Spruce Glulam Joints. BioResources. 11 (4). 9638-9648.
Status: Publicerad
Elustondo, D., Ahmed, S.A., Oliveira, L. (2014). Drying western red cedar with superheated steam. Drying Technology. 32 (5). 550-556.
Status: Publicerad
Ahmed, S.A., Sehlstedt-Persson, M., Morén, T. (2013). Development of a new rapid method for mould testing in a climate chamber : preliminary tests. European Journal of Wood and Wood Products. 71 (4). 451-461.
Status: Publicerad
Ahmed, S.A., Sehlstedt-Persson, M., Morén, T. (2013). Mould susceptibility of Scots pine (Pinus sylvestris L.) sapwood : Impact of drying, thermal modification, and copper-based preservative. International Biodeterioration & Biodegradation. 85. 284-288.
Status: Publicerad
Ahmed, S.A., Morén, T., Hagman, O., Cloutier, A., Fang, C., et al. (2013). Anatomical properties and process parameters affecting blister/blow formation in densified European aspen and downy birch sapwood boards by thermo-hygro-mechanical compression. Journal of Materials Science. 48 (24). 8571-8579.
Status: Publicerad
Ahmed, S.A., Yang, Q., Sehlstedt-Persson, M., Morén, T. (2013). Accelerated Mold Test on Dried Pine Sapwood Boards : Impact of Contact Heat Treatment. Journal of wood chemistry and technology. 33 (3). 174-187.
Status: Publicerad
Ahmed, S.A., Hansson, L., Morén, T. (2013). Distribution of preservatives in thermally modified Scots pine and Norway spruce sapwood. Wood Science and Technology. 47 (3). 499-513.
Status: Publicerad
Ahmed, S.A., Sehlstedt-Persson, M., Hansson, L., Morén, T. (2013). Evaluation of preservative distribution in thermally modified European aspen and birch boards using computed tomography and scanning electron microscopy. Journal of Wood Science. 59 (1). 57-66.
Status: Publicerad
Qian, Y., Karlsson, O., Ahmed, S.A., Morén, T. (2013). Dimensional Stability and Water Repellency of European Aspen Improved by Oxidized Carbohydrates.. BioResources. 8 (1). 487-498.
Status: Publicerad
Ahmed, S.A., Sehlstedt-Persson, M., Karlsson, O., Morén, T. (2012). Uneven distribution of preservative in kiln-dried sapwood lumber of Scots pine : Impact of wood structure and resin allocation. Holzforschung. 66 (2). 251-258.
Status: Publicerad
Ahmed, S.A., Morén, T. (2012). Moisture properties of heat-treated Scots pine and Norway spruce sapwood impregnated with wood preservatives. Wood and Fiber Science. 44 (1). 85-93.
Status: Publicerad

Konferensbidrag (Refereegranskat)

Ahmed, S.A., Tondi, G., Rizzo, F., Stöd, R., Hosseinpourpia, R. (2025). Dimensional stability of Scots pine sapwood modified by tannin-based formulas. Proceedings of the 11th European Conference on Wood Modification. 200-208.
Adamopoulos, S., Ahmed, S.A., Lankveld, C. (2018). Acoustic properties of acetylated wood under different humid conditions and its relevance for musical instruments. Proceedings of the 9th European Conference on Wood Modification 2018, Arnhem, The Netherlands. 236-243.
Sidorova, E., Ahmed, S.A., Diego, E. (2014). Wood thermal-modification at Luleå University of Technology. Final Cost Action FP0904 Conference “Recent Advances in the Field of TH and THM Wood Treatment” May 19-21, 2014, Skellefteå, Sweden : Books of Abstracts. 75-75.

Konferensbidrag (Övrigt vetenskapligt)

Ahmed, S.A., Hosseinpourpia, R. (2025). Comparative effects of polycarboxylic acids in sorbitol-based birch wood modification. 21st Annual Meeting of the Northern European Network for Wood Science and Engineering, 8-9 October, Växjö, Sweden : Book of Abstracts. 19-21.
Flecknoe-Brown, K.W., Hosseinpourpia, R., Ahmed, S.A., Thybring, E.E., Johansson, N., et al. (2025). Can bio-chemicals improve the fire performance of wood?. 21st Annual Meeting of the Northern European Network for Wood Science and Engineering, 8-9 October, Växjö, Sweden : Book of Abstracts. 25-27.
Kovacikova, J., Kroon, M., Ahmed, S.A., Hosseinpourpia, R., Adamopoulos, S. (2021). Mechanical properties of fiberboard composite bonded with polymer matrixcomputed by mean-field homogenization methods. 25th International Congress of Theoretical and Applied Mechanics, August 22-27, 2021 : Book of Abstracts. 1984-1985.

Rapport (Övrigt vetenskapligt)

Sehlstedt-Persson, M., Ahmed, S.A. (2014). Metodutveckling för mögeltestning av trä - förstudie : Slutrapport. TräCentrum Norr. 23.
Sehlstedt-Persson, M., Persson, F., Karlsson, O., Ahmed, S.A. (2013). Virkestorkningens inverkan på impregnerbarhet i furusplint – Del II : Delrapport 1. TräCentrum Norr. 42.
Ahmed, S.A., Morén, T. (2012). Förstudie: värmebehandling av trä : slutrapport. 5.
Sehlstedt-Persson, M., Wamming, T., Karlsson, O., Ahmed, S.A. (2011). Modern torknings inverkan på impregnerbarhet i furusplint : Förstudie. TräCentrum Norr. 21.