Carbon dioxide may have a profound influence on the development of gas bubbles in the blood, a fresh doctoral study at the Norwegian School of Veterinary Science (NVH) has shown.
Decompression sickness can develop in both sports and professional divers if the diver surfaces too quickly and nitrogen in the blood does not have sufficient time to re-dissolve and distribute before the diver reaches the surface. Decompression sickness is a painful condition, which at worst may be life-threatening.Local production of CO2
The doctoral thesis of Henrik Rasmussen shows, however, that naturally-produced CO2 formed in the caecum of mice and rats is distributed through the entire intestinal wall, creating a state of localised supersaturation at various places in the caecum. Should these animals subsequently be given ultrasound contrast agents, which consist of gas bubbles administered intravenously, the gasses in these agents increase in size as a result of the gas supersaturation, causing damage to the caesium and liver.Consequences for North Sea divers?
This work was carried out in collaboration with researchers from GE Healthcare, the Karolinska Institute in Stockholm, the Rikshospitalet University Hospital in Oslo and the University of Gothenborg, Gothenborg, Sweden.
Magnhild Jenssen | alfa
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Among the general public, solar thermal energy is currently associated with dark blue, rectangular collectors on building roofs. Technologies are needed for aesthetically high quality architecture which offer the architect more room for manoeuvre when it comes to low- and plus-energy buildings. With the “ArKol” project, researchers at Fraunhofer ISE together with partners are currently developing two façade collectors for solar thermal energy generation, which permit a high degree of design flexibility: a strip collector for opaque façade sections and a solar thermal blind for transparent sections. The current state of the two developments will be presented at the BAU 2017 trade fair.
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At TU Wien, an alternative for resource intensive formwork for the construction of concrete domes was developed. It is now used in a test dome for the Austrian Federal Railways Infrastructure (ÖBB Infrastruktur).
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Many pathogens use certain sugar compounds from their host to help conceal themselves against the immune system. Scientists at the University of Bonn have now, in cooperation with researchers at the University of York in the United Kingdom, analyzed the dynamics of a bacterial molecule that is involved in this process. They demonstrate that the protein grabs onto the sugar molecule with a Pac Man-like chewing motion and holds it until it can be used. Their results could help design therapeutics that could make the protein poorer at grabbing and holding and hence compromise the pathogen in the host. The study has now been published in “Biophysical Journal”.
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UMD, NOAA collaboration demonstrates suitability of in-orbit datasets for weather satellite calibration
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Fiber-reinforced plastics (FRP) are frequently used in the aeronautic and automobile industry. However, the repair of workpieces made of these composite materials is often less profitable than exchanging the part. In order to increase the lifetime of FRP parts and to make them more eco-efficient, the Laser Zentrum Hannover e.V. (LZH) and the Apodius GmbH want to combine a new measuring device for fiber layer orientation with an innovative laser-based repair process.
Defects in FRP pieces may be production or operation-related. Whether or not repair is cost-effective depends on the geometry of the defective area, the tools...
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