Sheikh Ali Ahmed

Undervisning

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

Forskning

Mitt forskningsområde är impregnering av trä, träets anatomi, modifiering av trä, träskydd och torkning av trä. Jag är också intresserad av icke-destruktiv utvärdering av trä och träbaserade kompositer. Jag betonar vikten av trämodifiering på miljövänligt sätt.

Mina forskargrupper

Mina pågående forskningsprojekt

Projekt: Träets anatomi och identifiering Detta projekt syftar till att förbättra laboratorieresurser för studenter på både grundnivå och avancerad nivå, liksom för forskare, för att ta itu med frågor…

Mina avslutade forskningsprojekt

Publikationer

Artikel i tidskrift (Refereegranskat)

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
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
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
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
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., 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
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)

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)

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.