Publikasjoner
NIBIOs ansatte publiserer flere hundre vitenskapelige artikler og forskningsrapporter hvert år. Her finner du referanser og lenker til publikasjoner og andre forsknings- og formidlingsaktiviteter. Samlingen oppdateres løpende med både nytt og historisk materiale. For mer informasjon om NIBIOs publikasjoner, besøk NIBIOs bibliotek.
2015
Sammendrag
Det er ikke registrert sammendrag
Forfattere
Zhibo Hamborg Gry Skjeseth Abdelhameed Elameen Sissel Haugslien Astrid Sivertsen Jihong Liu Clarke Qiao-Chun Wang Dag-Ragnar BlystadSammendrag
Det er ikke registrert sammendrag
Forfattere
Bente FøreidSammendrag
Soil cores from a field growing barley and barley mutants without root hairs under conventional and minimum tillage were sampled. They were X-ray scanned to produce a 3D image and then the roots were washed out and weight and length were determined by conventional means. Root volume and surface area were then calculated from the 3D images using state of the art software and methodology, and the measured and calculated measures were correlated. The only strong and significant correlation was between measured weight and calculated volume for mutants without root hairs. It is concluded that the software cannot segment out very small roots, but segmentation accuracy also depends on root structure in some unknown way. Any study using X-ray computed tomography to quantify roots as they grow in situ should start with a calibration for the conditions in question.
Forfattere
Mohammad Maniruzzaman Mohammad Shahid Ullah Talukder M.H. Khan Jatish C. Biswas Attila NemesSammendrag
Det er ikke registrert sammendrag
Forfattere
Roman Gebauer Daniel Volařík Josef Urban Isabella Børja Nina Elisabeth Nagy Toril Drabløs Eldhuset Paal KrokeneSammendrag
Det er ikke registrert sammendrag
Sammendrag
Embodied energy in barns is found to contribute to about 10–30% of total energy use on dairy farms. Nevertheless, research on sustainability of dairy farming has largely excluded consideration of embodied energy. The main objectives of this study were to apply an established model from the residential and commercial building sector and estimate the amount of embodied energy in the building envelopes on 20 dairy farms in Norway. Construction techniques varied across the buildings and our results showed that the variables which contributed most significantly to levels of embodied energy were the area per cow-place, use of concrete in walls and insulation in concrete walls. Our findings are in contrast to the assumption that buildings are similar and would show no significant differences. We conclude that the methodology is sufficiently flexible to accommodate different building design and use of materials, and allows for an efficient means of estimating embodied energy reducing the work compared to a mass material calculation. Choosing a design that requires less material or materials with a low amount of embodied energy, can significantly reduce the amount of embodied energy in buildings.
Sammendrag
Det er ikke registrert sammendrag
Forfattere
Gudni Thorvaldsson Liv Østrem Linda Öhlund Toroddur Sveinsson Sigridur Dalmannsdottir Rolvur Djurhuus Kenneth Høegh Thordis Anna KristjansdottirSammendrag
Det er ikke registrert sammendrag
Sammendrag
Det er ikke registrert sammendrag
Forfattere
Emir Malikov Subal Chandra Kumbhakar Efthymios G. TsionasSammendrag
Det er ikke registrert sammendrag