Publications
NIBIOs employees contribute to several hundred scientific articles and research reports every year. You can browse or search in our collection which contains references and links to these publications as well as other research and dissemination activities. The collection is continously updated with new and historical material.
2016
Abstract
Several species of microalgae and phototrophic bacteria are able to produce hydrogen under certain conditions. A range of different photobioreactor systems have been used by different research groups for lab-scale hydrogen production experiments, and some few attempts have been made to upscale the hydrogen production process. Even though a photobioreactor system for hydrogen production does require special construction properties (e.g., hydrogen tight, mixing by other means than bubbling with air), only very few attempts have been made to design photobioreactors specifically for the purpose of hydrogen production. We have constructed a flat panel photobioreactor system that can be used in two modes: either for the cultivation of phototrophic microorganisms (upright and bubbling) or for the production of hydrogen or other anaerobic products (mixing by “rocking motion”). Special emphasis has been taken to avoid any hydrogen leakages, both by means of constructional and material choices. The flat plate photobioreactor system is controlled by a custom-built control system that can log and control temperature, pH, and optical density and additionally log the amount of produced gas and dissolved oxygen concentration. This paper summarizes the status in the field of photobioreactors for hydrogen production and describes in detail the design and construction of a purpose-built flat panel photobioreactor system, optimized for hydrogen production in terms of structural functionality, durability, performance, and selection of materials. The motivations for the choices made during the design process and advantages/disadvantages of previous designs are discussed.
Abstract
No abstract has been registered
Authors
Guro Brodal Jan Netland Elin Thingnæs Lid Åshild Ergon Christer Magnusson Arild Sletten Leif Sundheim May Sæthre Anne Marte Tronsmo Bjørn Økland Trond RafossAbstract
No abstract has been registered
Authors
Jihong Liu Clarke Lisa Paruch Hege Særvold Steen Andre van Eerde Yanliang Wang Astrid Sivertsen Sissel Haugslien Inger HeldalAbstract
No abstract has been registered
Authors
Leif Sundheim Åshild Ergon Christer Magnusson Jan Netland Egil Prestløkken Arild Sletten May Sæthre Elin Thingnæs Lid Tron Øystein Gifstad Micael Wendell Guro Brodal Halvor Solheim Anne Marte Tronsmo Bjørn Økland Trond RafossAbstract
No abstract has been registered
2015
Authors
Zhibo Hamborg YeonKyeong Lee Carl Jonas Jorge Spetz Jihong Liu Clarke Qiaochun Wang Dag-Ragnar BlystadAbstract
No abstract has been registered
Authors
Zhibo Hamborg Gry Skjeseth Abdelhameed Elameen Sissel Haugslien Astrid Sivertsen Jihong Liu Clarke Qiao-Chun Wang Dag-Ragnar BlystadAbstract
No abstract has been registered
Authors
Ricardo Holgado Christer Magnusson Bonsak Hammeraas Irene Rasmussen Kari-Ann Strandenæs Holger Heuer Randi KnudsenAbstract
No abstract has been registered
Abstract
No abstract has been registered
Abstract
Replication of all positive-sense single-stranded RNA viruses occurs in specific structures in close association with cellular membranes. Targeting of the viral replication complex (RC) to the site of replication is mediated by the interaction of viral-encoded proteins and host factors. Electron microscope studies have shown that Poinsettia mosaic virus (PnMV, family Tymoviridae) infection is associated with the presence of vesicular structures in the chloroplasts, which indicates that the replication of PnMV might occur in association with chloroplast-derived membranes. Using computer assisted homology search, we have identified that the coat protein (CP) of PnMV shows similarity to membrane bound proteins and contains a conserved amino acid sequence motif found in members of the Alb3/Oxa1/YidC protein family. This protein family is involved in the insertion of proteins into intracellular membranes. In this study we carried out localization studies combined with confocal laser microscopy to identify the cellular localization of the PnMV CP. Transient expression of red fluorescent protein (RFP)-tagged PnMV CP in Nicotiana benthamiana protoplast was shown to localize in the chloroplast.