Zobrazeno 1 - 10
of 27
pro vyhledávání: '"Kari Pirkkalainen"'
Autor:
Susanna L. Heikkinen, Kirsi S. Mikkonen, Paula Koivisto, Mari I. Heikkilä, Kari Pirkkalainen, Ville Liljeström, Ritva Serimaa, Maija Tenkanen
Publikováno v:
BioResources, Vol 9, Iss 1, Pp 906-921 (2013)
Oat spelt arabinoxylan (OsAX) and spruce galactoglucomannan (GGM) are hemicelluloses that can be extracted in large quantities from side-streams of the agriculture and forest industries. They both form self-standing films, making them potential futur
Externí odkaz:
https://doaj.org/article/f8e2edcbe46c48029b4f3b2d6dc97e51
Autor:
Ritva Serimaa, Michal Matusewicz, Ville Liljeström, Andrew Root, Jussi-Petteri Suuronen, Markus Olin, Arto Muurinen, Kari Pirkkalainen
Publikováno v:
Matusewicz, M, Pirkkalainen, K, Liljeström, V, Suuronen, J-P, Root, A, Muurinen, A, Serimaa, R & Olin, M 2013, ' Microstructural investigation of calcium montmorillonite ', Clay Minerals, vol. 48, no. 2, pp. 267-276 . https://doi.org/10.1180/claymin.2013.048.2.08
Bentonite clay is planned to form a part of deep-geological repositories of spent nuclear fuel in several countries. The extremely long operation time of the repository requires an indepth understanding of the structure and properties of used materia
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::44a4f973198b2e2a7eccc5e091aeb71c
https://doi.org/10.1180/claymin.2013.048.2.08
https://doi.org/10.1180/claymin.2013.048.2.08
Autor:
Pekka Saranpää, Ari Salmi, Ritva Serimaa, Antti Meriläinen, Kirsi Leppänen, Marko Peura, Kari Pirkkalainen
Publikováno v:
Wood Science and Technology. 46:1113-1125
Secondary xylem of Norway spruce was studied by X-ray microanalysis. Average dimensions of cellulose crystallites, fraction of oriented cellulose, mean microfibril angle, and nutrient element concentrations of K, Ca, Mn, and Zn were simultaneously de
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d87c209035b87d1e066cc58380b4d3dd
https://doi.org/10.1007/s00226-012-0474-y
https://doi.org/10.1007/s00226-012-0474-y
Autor:
Kirsi S. Mikkonen, Aji P. Mathew, Ritva Serimaa, Chunlin Xu, Stefan Willför, Kristiina Oksman, Kari Pirkkalainen, Maija Tenkanen
Publikováno v:
Cellulose. 17:69-81
Spruce galactoglucomannans (GGM) and konjac glucomannan (KGM) were mixed with cellulose nanowhiskers (CNW) to form composite films. Remarkable effects of CNW on the appearance of the films were detected when viewed with regular and polarizing optical
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0c1319a96a7c6becc5169678025b3952
https://doi.org/10.1007/s10570-009-9380-3
https://doi.org/10.1007/s10570-009-9380-3
Autor:
Ritva Serimaa, Kari Pirkkalainen
Publikováno v:
Journal of Applied Crystallography. 42:442-447
The effect of very small crystal sizes on the average coordination number (ACN) was evaluated by computer calculations. For well ordered materials, the experimentally measured ACN is often very near the theoretical maximum,i.e.the infinite lattice li
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::34ef78b7573fe83809ee3a48b6cba2e3
https://doi.org/10.1107/s0021889809012412
https://doi.org/10.1107/s0021889809012412
Autor:
N. E. Kotelnikova, Tiiu Elbra, Kari Pirkkalainen, Antti Nykänen, Ulla Vainio, Janne Ruokolainen, Ritva Serimaa, Tomas Kohout, M Webb, Kirsi Leppänen
Publikováno v:
The European physical journal / D 49, 333-342 (2008). doi:10.1140/epjd/e2008-00180-5
Polymeric matrices with stabilized metallic nanoparticles constitute an important class of nanostructured materials, because polymer technology allows fabrication of components with various electronic, magnetic and mechanical properties. The porous c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e3eadd9a4983cbb80fb6b34b9c338f26
https://doi.org/10.1140/epjd/e2008-00180-5
https://doi.org/10.1140/epjd/e2008-00180-5
Publikováno v:
Computational Materials Science. 43:325-336
Describing nanocluster growth and obtaining size distributions of clusters near kinetically determined metastable states is a computationally difficult problem because of the slow convergence of size distributions near the metastable state. In this w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::23ca6dca4bff43ee3421772daa40f876
https://doi.org/10.1016/j.commatsci.2007.11.007
https://doi.org/10.1016/j.commatsci.2007.11.007
Publikováno v:
Macromolecular Symposia. 254:74-79
Copper and nickel nanoparticles were synthesized in the insoluble microcrystalline cellulose support by reduction of metal ions with several reducers in various media resulting in cellulose-metal nanocomposites. Wide-angle X-ray scattering results sh
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9d02b43c4528b9e71dc0d15de2463f3f
https://doi.org/10.1002/masy.200750811
https://doi.org/10.1002/masy.200750811
Autor:
Ulla Vainio, Ritva Serimaa, Kari Pirkkalainen, Tomas Kohout, Kaisa Kisko, Tiiu Elbra, N. E. Kotelnikova
Publikováno v:
Journal of applied crystallography 40, s489-s494 (2007). doi:10.1107/S0021889806055804
Nickel nanoparticles were synthesized by adding aqueous nickel salt into a microcrystalline cellulose matrix. The NiII ions were reduced with either sodium borohydride, NaBH_4, or potassium hypophosphite, KH_2PO_2, in water or aqueous NH_3 medium. Th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fe527a5cfc383896e0240eb6c23309c5
https://doi.org/10.1107/s0021889806055804
https://doi.org/10.1107/s0021889806055804
Autor:
R. Serimaa, N. E. Kotelnikova, Natalia Saprykina, N. P. Novoselov, E. L. Lysenko, V. K. Lavrent’ev, A. L. Shakhmin, D. A. Medvedeva, Ulla Vainio, Kari Pirkkalainen
Publikováno v:
Russian Journal of Applied Chemistry. 79:1902-1906
A matrix of microcrystalline cellulose was used as a nanoreactor for the reduction of Ni(II) ions with hydrazine dihydrochloride.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::65a2303df1bc01f2314afea39dd7daf6
https://doi.org/10.1134/s1070427206110310
https://doi.org/10.1134/s1070427206110310