Zobrazeno 1 - 10
of 23
pro vyhledávání: '"Uldis Grinfelds,"'
Autor:
Velta Fridrihsone, Igors Sivacovs, Inese Filipova, Uldis Grinfelds, Juris Zoldners, Martins Spade, Marianna Laka, Marite Skute
Publikováno v:
Cellulose Chemistry and Technology. 54:1031-1036
Nano- and microparticles were produced from hemp shives and hemp cellulose obtained thereof, using the thermocatalytic mechanical destruction method. The partially destructed material, at concentrations of 8-9%, was dispersed in water medium in a bal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fb3adc0aac2c8a1734a08364b29b3f02
https://doi.org/10.35812/cellulosechemtechnol.2020.54.100
https://doi.org/10.35812/cellulosechemtechnol.2020.54.100
Autor:
Marianna Laka, Inese Filipova, Marite Skute, Martins Spade, Velta Fridrihsone, Juris Zoldners, Uldis Grinfelds, Igors Sivacovs
Publikováno v:
Cellulose Chemistry and Technology. 54:113-117
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5040777854f59bd65c7001a0b74ae3cf
https://doi.org/10.35812/cellulosechemtechnol.2020.54.13
https://doi.org/10.35812/cellulosechemtechnol.2020.54.13
Autor:
Inese Sable,, Uldis Grinfelds,, Aris Jansons,, Laura Vikele,, Ilze Irbe,, Anrijs Verovkins,, Arnis Treimanis
Publikováno v:
BioResources, Vol 7, Iss 2, Pp 1771-1783 (2012)
In this study, the relationship between the properties of the wood and kraft pulp fibers as well as paper characteristics of 27-year-old trees, lodgepole pine (Pinus contorta) and Scots pine (Pinus sylvestris), was assessed. All trees had been grown
Externí odkaz:
https://doaj.org/article/54dbae7e16ef4830a727237ecc1f1053
Publikováno v:
BioResources, Vol 4, Iss 2, Pp 554-565 (2009)
The residues of the wood cell wall compound middle lamella affect the composition of the relevant pulp fiber surface layers and influence the fibers’ bleachability. The objective of the present work was to separate the eucalyptus kraft and birch or
Externí odkaz:
https://doaj.org/article/83aee0359a9d4d68ade8c6a12fe9ccb0
Autor:
Velta Fridrihsone, Martins Spade, Juris Zoldners, Inese Filipova, Igors Sivacovs, Marianna Laka, Marite Skute, Uldis Grinfelds
Publikováno v:
Key Engineering Materials. 800:138-144
Recycling of paper materials or other type of cellulose fibres is important regarding saving nature resources and environmental protection. Cellulose dissolution and regenerating from various materials is one of recycling possibilities. Cellulose dis
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c701b3abeac4f9dead7ae5791fa94915
https://doi.org/10.4028/www.scientific.net/kem.800.138
https://doi.org/10.4028/www.scientific.net/kem.800.138
Autor:
Laura Andze, Juris Zoldners, Sarmite Janceva, Marite Skute, Linda Vecbiškena, Uldis Grinfelds, Marianna Laka, Inese Sable, Velta Fridrihsone
Publikováno v:
Solid State Phenomena. 267:12-16
For reinforcing of paper, nanoparticle gels from black alder, birch and pine bark were obtained. Non-extracted bark and that extracted in biorefinery were used. For producing nanoparticles, the materials were destructed using the thermocatalytic dest
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e7589627d45781b2e64dec3ca10a8841
https://doi.org/10.4028/www.scientific.net/ssp.267.12
https://doi.org/10.4028/www.scientific.net/ssp.267.12
Autor:
Linda Rozenberga, Aris Jansons, Uldis Grinfelds, Laura Vikele, Dagnija Lazdina, Inese Sable, Martins Zeps
Publikováno v:
Forestry Studies. 66:27-32
Bioenergy, including energy from wood, currently provides about 9–13% of the total global energy supply. Every fibre of fast-growing wood has a value for its potential use as a material in both pulp and paper and wood chemical industries. The aim o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f28c48f2555d084004a5470e610b2387
https://doi.org/10.1515/fsmu-2017-0004
https://doi.org/10.1515/fsmu-2017-0004
Preparation of Nanocellulose Using Ammonium Persulfate and Method’s Comparison with other Techniques
Autor:
Linda Rozenberga, Inese Sable, Uldis Grinfelds, Marianna Laka, Laura Vikele, Linda Vecbiškena
Publikováno v:
Key Engineering Materials. 674:21-25
Cellulose nanocrystals (CNCs) have generated increasing attention in the past few years as potential sources of innovative bionanomaterials. This study focuses on an alternative method of nanocellulose particle preparation, using ammonium persulfate,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4bebaab137cfba79f7e65ca690fc3928
https://doi.org/10.4028/www.scientific.net/kem.674.21
https://doi.org/10.4028/www.scientific.net/kem.674.21
Publikováno v:
Advances in Bioscience and Biotechnology. :1104-1112
Genetic variation of ten Norway spruce (Picea abies (L.) Karst.) clones regarding their decay resistance against brown rot fungi, as well as physical and chemical properties of clones were investigated. 31- year-old spruce clones: 26, 31, A10, A15, A
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6d44b4b36ef04bf3e0b1cf43d7548595
https://doi.org/10.4236/abb.2012.38135
https://doi.org/10.4236/abb.2012.38135
Autor:
Aris Jansons, Uldis Grinfelds, Ilze Irbe, Laura Vikele, Inese Sable, Arnis Treimanis, Anrijs Verovkins
Publikováno v:
BioResources, Vol 7, Iss 2, Pp 1771-1783 (2012)
In this study, the relationship between the properties of the wood and kraft pulp fibers as well as paper characteristics of 27-year-old trees, lodgepole pine (Pinus contorta) and Scots pine (Pinus sylvestris), was assessed. All trees had been grown
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::096a9c1296567b8f5c0aeefcf73a6d2f
https://doi.org/10.15376/biores.7.2.1771-1783
https://doi.org/10.15376/biores.7.2.1771-1783