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<p>PCoA performed to compare the microbial composition on pollen obtained from rural (grey) and urban areas (black). <b>A)</b> Bacterial composition on birch pollen. <b>B)</b> Bacterial composition on timothy grass pollen. <b>C)</b> Fungal composition on birch pollen. <b>D)</b> Fungal composition on timothy grass pollen.</p

The use of biomass as an energy source for the production of heat and power is one way to decrease dependency on fossil fuels and increase energy self-sufficiency. The utilization of fossil fuels in energy production is also the major source of CO2 emissions, and CO2 is the main anthropogenic greenhouse gas. Biomass, on the other hand, is regarded as a CO2-neutral energy source. However, the nitrogen and sulfur in the biomass forms pollutants such as NOX and SO2. These must meet the stringent emission limits set by emission directives. Furthermore, the sulfur in the fuel can both cause and prevent corrosion of an incinerator, depending on the fuel and combustion. The main objective of this work was to gain knowledge about the fate of fuel-bound nitrogen and sulfur in industrial-scale biomass combustors during combustion of various biofuels. This was achieved by full-scale measurement campaigns: in a bubbling fluidized bed (BFB) boiler combusting various fuel mixtures and in a Kraft ...

GLP-1 receptors are ideal targets for preoperative imaging of benign insulinoma and for quantifying the beta cell mass. The existing clinical tracers targeting GLP-1R are all agonists with low specific activity and very high kidney uptake. In order to solve those issues we evaluated GLP-1R agonist Ex-4 and antagonist Ex(9-39) radioiodinated at Tyr40 side by side with [Nle14,Lys40(Ahx-DOTA-68Ga)NH2]Ex-4 (68Ga-Ex-4) used in the clinic. The Kd, Bmax, internalization and binding kinetics of [Nle14,125I-Tyr40-NH2]Ex-4 and [Nle14,125I-Tyr40-NH2]Ex(9-39) were studied in vitro using Ins-1E cells. Biodistribution and imaging studies were performed in nude mice bearing Ins-1E xenografts. In vitro evaluation demonstrated high affinity binding of the [Nle14,125I-Tyr40-NH2]Ex-4 agonist to the Ins-1E cells with fast internalization kinetics reaching a plateau after 30 min. The antagonist [Nle14,125I-Tyr40-NH2]Ex(9-39) did not internalize and had a 4-fold higher Kd value compared to the agonist. I...