Zobrazeno 1 - 10
of 132
pro vyhledávání: '"Jouni Pursiainen"'
Publikováno v:
International Journal of STEM Education, Vol 6, Iss 1, Pp 1-12 (2019)
Abstract Background Despite the increasing need for STEM skills, to date, the connection between STEM subject choices and their impact on students’ educational pathways has not been widely studied. Focusing on the mathematics choice (basic/advanced
Externí odkaz:
https://doaj.org/article/34f9105dbd2f48d883bb494970f2d652
Publikováno v:
Kasvatus
Oppimisanalytiikan eettiset kysymykset ovat herättäneet laajaa kiinnostusta viimeaikaisessa tutkimuksessa. On tunnistettu, että eettiset kysymykset sisältävät ristiriitaisuuksia, eivätkä nykyiset ohjeistukset tarjoa riittävästi tukea eettis
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ba17f0e03caa81dfdad521edb06d511f
https://journal.fi/kasvatus/article/view/111448
https://journal.fi/kasvatus/article/view/111448
Publikováno v:
Journal of Education for Teaching. 49:180-193
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::706b95cac9e0325f4be2a9724f5d1ad0
https://doi.org/10.1080/02607476.2022.2072714
https://doi.org/10.1080/02607476.2022.2072714
Publikováno v:
Scandinavian Journal of Educational Research. 64:1105-1119
Vocational education and training (VET) remain overlooked in learning analytics (LA) research. This systematic literature review, using four databases and other sources, was carried out by analyzin...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2c1a2c70c93b4868da73d5df7cbea194
https://doi.org/10.1080/00313831.2019.1649718
https://doi.org/10.1080/00313831.2019.1649718
Publikováno v:
International Journal of STEM Education, Vol 6, Iss 1, Pp 1-12 (2019)
Background Despite the increasing need for STEM skills, to date, the connection between STEM subject choices and their impact on students’ educational pathways has not been widely studied. Focusing on the mathematics choice (basic/advanced/no mathe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3d786372141b058bf258513080c4e844
http://urn.fi/urn:nbn:fi-fe2019121948896
http://urn.fi/urn:nbn:fi-fe2019121948896
Autor:
Estibaliz Diaz, Marja Lajunen, Johanna Kärkkäinen, Jouni Pursiainen, Sanna Komulainen, Paavo Perämäki
Publikováno v:
Reactive and Functional Polymers. 83:123-131
The structure of the bromate-oxidized wheat starch (OS) contains partly opened glucose units with carbonyl and carboxyl groups at C2-, C3- or C6-positions. OS with a variable degree of oxidation (DO) was studied in alkaline conditions as a water-solu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3f3fd7cd5e077b361a109e196afb1bb0
https://doi.org/10.1016/j.reactfunctpolym.2014.06.007
https://doi.org/10.1016/j.reactfunctpolym.2014.06.007
Publikováno v:
Carbohydrate polymers
Native wheat starch was oxidized by benign acidic bromate in water at room temperature. HPLC-ELSD study indicated that starch degraded in the course of oxidation but it still had a polymeric structure characterized by H-1, C-13, HSQC and HMBC NMR mea
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::561e0cee9b7fe87157f1c57b165b3a01
https://doi.org/10.1016/j.carbpol.2012.06.001
https://doi.org/10.1016/j.carbpol.2012.06.001
Publikováno v:
Carbohydrate Research. 367:58-62
A simple oxidation of starch in water by bromate was substantially improved by microwave activation. In the oxidation of native wheat starch its advantages were the highly reduced need of oxidant from 1.05 to 0.1–0.25 equiv, shortened reaction time
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f229cba60d6cfc45fdd479c65b079b27
https://doi.org/10.1016/j.carres.2012.11.018
https://doi.org/10.1016/j.carres.2012.11.018
Publikováno v:
Starch - Stärke. 65:338-345
In this work, we have studied the use of the oxidized starch as a water-soluble complexing agent for Fe(III) in alkaline conditions. Fe(III) was completely soluble in alkaline solutions with a 0.65:1 molar ratio of the oxidized starch-to-Fe(III) ion.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::133fc7f50d4cba150aa1e8d39fecf7ec
https://doi.org/10.1002/star.201200127
https://doi.org/10.1002/star.201200127
Publikováno v:
Synthetic Communications. 42:534-540
The use of environmentally benign reactions is currently an important topic in the field of synthetic chemistry. Here we report a high-yielding method to oxidize aliphatic or aromatic secondary alcohols into corresponding ketones using nonhazardous a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c4109e5e0ed74613b5f28ce28c1eef15
https://doi.org/10.1080/00397911.2010.526283
https://doi.org/10.1080/00397911.2010.526283