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3-Hydroxypropionaldehyde (3HPA) is an important C3 chemical that can be produced from renewable glycerol by resting whole cells of Lactobacillus reuteri. However the process efficiency is limited due to substrate inhibition, product-mediated loss of enzyme activity and cell viability, and also formation of by-products. Complex formation of 3HPA with sodium bisulfite and subsequent binding to Amber
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In the search for renewable vehicle fuels several different gasoline additives have been discussed and reviewed. Today bioethanol is the most commonly used option, but isobutanol is being proposed as a better alternative by many stakeholders, due to its superior fuel characteristics, e.g. energy density, oxygen content and vapor pressure. The research project “Glycerol-based isobutanol” has invest
Renewable portfolio standards (RPS) and minimum price standards are two systems to foster the market dissemination of renewable energies in the electricity sector. Transaction Cost Economics brings forward that the contractual relations in real structures have to be investigated to judge on the efficiency of governance structures. This paper seeks to do so by comparing governance structures create
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This paper analyses the potential biomass Supply in the 15 EU countries (EU15), 8 new member states and 2 candidate countries (ACC10), plus Belarus and the Ukraine. The objective of this study is to make a more detailed assessment of the potential in Europe than previously undertaken. For this purpose five scenarios were designed to describe the short-, medium- and long-term potential of biomass f
Although Parkinson's disease is a movement disorder, in many patients cognitive dysfunction is an important clinical sign. It is not yet clear whether this is attributable solely to a decrease in dopamine levels, or whether other neurotransmitter systems might be involved as well. In the present study, the importance of the mesocorticolimbic dopamine pathway and a possible convergence with forebra
Biogas produced by anaerobic digestion is often used in gas turbines to produceelectricity. In order to increase the value of the gas and to enable utilization of the gas in other applications, it may be advantageous to upgrade the biogas. In this way, the carbon dioxide as well as various impurities are removed and biomethane is produced. Biomethane is similar to natural gas and can be used in si
Many governments worldwide have proposed transitioning from a fossil-based economy to a bioeconomy to address climate change, resource depletion, and other environmental concerns. The bioeconomy utilizes renewable biological resources across all sectors and is strongly founded on scientific advances and technological progress. Given that the bioeconomy spans multiple sectors, industries, and techn
Generating electricity from solar photovoltaics (PVs) has massive potential, but realising this potential will require a genuine understanding of transaction costs associated with the adopters' acquisition of the technology. The objective of this study is thus to empirically assess the transaction costs that solar PV adopters carry when proceeding with an acquisition process. Data on transaction c
N-Lauroyl-N-methylglucamide is a biodegradable surfactant derived from renewable resources. In an earlier study, we presented an enzymatic solvent-free method for synthesis of this compound. In the present report, the HPLC method developed to follow the reaction between lauric acid/methyl laurate and N-methyl glucamine (MEG) and its environmental assessment are described.
The setting (distance between mantle and concave ring) of the Hydrocone cone crusher is altered, even with the crusher operating at full load, by lifting or lowering the mantle by means of a hydraulic piston (Hydroset). Modern developments in the field of electronics and microcomputers have made it possible to design a small, reliable and very sophisticated system for automatic regulation of the s
Chemical cross-linking was used to analyze the binding sites for the agonist bradykinin (BK) and the antagonists NPC17731 and HOE140 on the bovine B2 bradykinin receptor. [3H]BK and [3H]NPC17731 bound with high affinity to the same B2 receptor in bovine myometrial membranes as determined by the total number of specific binding sites and pharmacological specificity of the binding of these two radio
https://www.cec.lu.se/sv/january-10th-2019 - 2026-07-15
Popular Abstract in Swedish Dagens samhälle är mycket beroende av fordonsbränslen och kemikalier som producerats av råolja. Framtidens tillgång på råolja är oviss, det enda som är säkert är att det är en ändlig resurs. Användningen av olja bidrar dessutom till koldioxidutsläpp till atmosfären. För att säkra framtida tillförsel av energi och kemikalier till samhället och för att uppnå ett mer klimaMany scientists believe that the oil production will peak in the near future, if the peak has not already occurred. Peak oil theories and uncertain future oil deliveries have stimulated interest in alternative sources of fuel and chemicals. This interest has been enhanced by concerns about energy security and about the climate change caused by emissions of carbon dioxide. The result has been incre
