Petri Widsten
 
 
petri.widsten@hut.fi
 
 
Regent of Unicorn High IQ Society (cut-off 1/3.000.000)
Only person to solve the problem 35 of the Sigma Test
Sigma VI member (IQ over 196)
Sigma V
member (IQ over 180)

Pi Society member (IQ over 176)
International Coordinator of Sigma Society
President of the Deleberative Council of Sigma Society
Director of External Relationships of Sigma Society
Member of ISI-S, Glia Society and Mensa Finland
Author of the Sigma Associations Test, one of the more difficult intelligence tests of the world.
Co-author of the Sigma Analogy Test, one of the more difficult intelligence tests of the world. This test was published on: Very high score (IQ>175) in several tests:
    • Sigma Test
    • Test for Genius
    • Final Test
    • Space, Time & Hyperspace
2nd. Highest Score in "Mensa International Contest 2001" (organized by Mensa France and Mensa Belgium)

1st. Place on X-Test Contest
   
Ph.D. Summa Cum Laude in Chemistry (Helsinki University of Technology)
M.Sc. in Organic Chemistry
Speaks nine languages
Co-editor of the Sigma V  e-Magazine on-line

Peer-reviewed publications

Widsten, P., Laine, J.E., Qvintus-Leino, P. and Tuominen, S.: “Effect of High-Temperature Fiberization on the Chemical Structure of Softwood”. Journal of Wood Chemistry and Technology 21(3), 227-245 (2001).

Widsten, P., Laine, J.E., Qvintus-Leino, P. and Tuominen, S.: “Effect of High-Temperature Defibration on the Chemical Structure of Hardwood”. Holzforschung 56(1), 51-59 (2002).

Widsten, P., Laine, J.E. and Tuominen, S.: “Radical formation on laccase treatment of wood defibrated at high temperatures. Part 1. Studies with hardwood fibers”. Nordic Pulp and Paper Research Journal 17(2), 18-25 (2002).

Widsten, P., Laine, J.E. and Tuominen, S.: “Radical formation on laccase treatment of wood defibrated at high temperatures. Part 2. Studies with softwood fibers”. Cellulose Chemistry and Technology 36(1-2), 161-172 (2002).

Widsten, P., Laine, J.E., Qvintus-Leino, P. and Tuominen, S.: “Effect of High Defibration Temperature on the Properties of Medium Density Fiberboard (MDF) Made from Laccase-Treated Hardwood Fibers”. Journal of Adhesion Science and Technology 17(1), 69-78 (2003).

Widsten, P., Laine, J.E., Qvintus-Leino, P. and Tuominen, S.: “The influence of high defibration temperature on the properties of fiberboard made from laccase-treated softwood fibers”. Wood Science and Technology. In press.

Widsten, P., Laine, J.E., Qvintus-Leino, P. and Tuominen, S.: “Manufacture of fiberboard from wood fibers activated with Fenton’s reagent (H2O2 + FeSO4)”. Holzforschung 57(4), 447-452 (2003).

Widsten, P., Laine, J.E., Qvintus-Leino, P. and Tuominen, S.: “Studies on the Use of Fenton’s Reagent (H2O2-FeSO4) and Gamma-Irradiation to Produce Radicals in Wood Fibers to Be Used for Fiberboard”. Paperi ja Puu 85(2), 96-99 (2003).

Widsten, P., Laine, J.E., Lahti, T. and Fräki, E. “Seasonal variations in the effluent of an integrated pulp and paper mill and its behavior in biological treatment”. Nordic Pulp and Paper Research Journal 19(2), 158-161 (2003).

Widsten, P., Hortling B. and Poppius-Levlin, K. “Reactions of conventional kraft and SuperBatch residual lignins with peroxyformic acid”. Journal of Wood Chemistry and Technology 23(3&4), 305-323 (2003).

PhD thesis

“Oxidative Activation of Wood Fibers for the Manufacture of Medium-Density Fiberboard (MDF)”
http://lib.hut.fi/Diss/2002/isbn9512261928/. Accepted with distinction.


Patent

WO 2003047826. Method of producing compressed layered structures. Qvintus-Leino, Pia; Widsten, Petri; Tuominen, Simo; Laine, Jaakko; Kunnas, Joni. (Dynea Chemicals Oy, Finland).


Conference presentations 2003

“Manufacture of fiberboard from laccase-treated HTMP fibers”. 2nd International Symposium on Interfaces in Polymer Composites and Adhesives. Oral presentation. Orlando, Florida, December 9-11, 2002.

“Treatment of conventional kraft and SuperBatch pulp residual lignins with alkaline hydrogen peroxide”. 28th EUCEPA conference. Poster sessions. Lisbon, April 2-4, 2003.

“Characterization by 13C-NMR and FTIR-spectroscopy of conventional kraft and SuperBatch pulp residual lignins reacted with performic acid”. 12th International Symposium on Wood and Pulping Chemistry. Poster sessions. Madison, Wisconsin, June 9-12, 2003.

“Manufacture of fiberboard from wood fibers activated by treatment with Fenton’s reagent”. 4th International Symposium on Silanes and Other Coupling Agents. Oral Presentation. Orlando, Florida, June 11-13, 2003.


Upcoming conference presentations

“Manufacture of resin-free medium-density fiberboard (MDF) from laccase-treated wood fibers”. 38th International Wood Composites Symposium, Oral presentation, Pullman, Washington, April 5-8, 2004.

“Impact of wood type and defibration temperature on laccase reactivity of wood fibers for fiberboard manufacture”. 58th Appita Annual Conference, Oral presentation, Canberra, Australia, April 19-21, 2004.


Research activities after January, 2004

Research into activation of wood surfaces for enhanced bonding of paints and adhesives at CSIRO Manufacturing & Infrastructure Technology, Highett, Victoria, Australia.

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