Abstract: To improve heat economy in certain building structures, e.g. greenhouses and sports halls, a plastic film is applied which is held in place by evacuating the space between the structure and the plastic film. Periodic excess heat is accumulated in a heat storage chamber, which can also be combined with a composting chamber.The building structure is preferably made in the shape of a geodesic dome. Greenhouses of this type can be placed with advantage on pontoons or barges.

Abstract: A building construction formed as a dome has a transparent outer shell and an inner shell of flat cassettes which are turnable for regulating incident light radiation and light escaping from the dome. Air is circulated through a heat accumulator, arranged beneath the dome, and a collecting space in the peak of the dome through the cassettes, which have a shiny and a black side surface for maximum reflection or absorption of sunlight. The adjustment of the cassettes for greatest efficiency is automatically controlled. The dome has double or multiple transparent walls between which biomass is cultivated, e.g. green microorganisms in an outer and red microorganisms in an inner layer for maximum energy utilization. Light-absorbing salt solutions can be circulated through a layer, or parts thereof, when screening-off is desired to steer light radiation for optimum biological production.

Abstract: In microbiological analysis wherein microorganisms are grown on an elongated substrate, a method which makes it possible to simultaneously study the effect of a number of different nutrition components on the growth of the organisms consists of dividing the elongated substrate into independent segments by inserting a series of transverse barriers therein to isolate each segment and to provide each segment with a reagent.

Abstract: Many tankers can lie idle for longer or shorter periods or can travel empty from oil consumers on the way back to the oil suppliers. The present invention is related to utilizing vessels, which for longer or shorter periods and for various reasons cannot travel with a full load, as fermenting vats for, for example, alcohol fermentation. Water supply and temperature control are easily taken care of by means of water from the surrounding sea, and disposal of the waste from fermentation can also be accomplished by direct release, since the residues from the fermentation comprise organic material which decomposes in a very short time. In this way fermentable waste, e.g. sugar cane molasses, can be loaded for example in Cuba and allowed to ferment on the way to Europe where it is directly unloaded as finished alcohol or as raw material for a distillation plant.