Fraunhofer-gesellschaft Zur Foerderung Der Angewandten Forschung E.v.

Jessy Schönfelder

Jörg Kubusch

Gaby Gotzmann

Volker Kirchhoff

Christiane Wetzel

Frank-Holm Rögner

André Weidauer

Uwe Vogel

Philipp Wartenberg

Sebastian Ulbert

Javier Portillo

Javier Portillo Casado

Jana Burkhardt

Daniel Glöss

Simona Walker

A method may be provided for inactivating biologically active components in a liquid using low-energy electrons generated by an electron source, the electrons having an acceleration voltage of 25 keV to 300 keV. The method comprises the following steps: a) filling a vessel with a liquid volume; b) applying low-energy electrons to a first partial volume of the liquid filled into the vessel, wherein the first partial volume is a maximum of 10% of the liquid volume in the vessel; c) mixing the first partial volume of the liquid, applied with the low-energy electrons, to the second partial liquid volume in the vessel, which has not been applied with low-energy electrons; d) repeating steps b) and c) several times.

Method for inactivating biologically active components in a liquid

A method may be provided for stimulating the growth of a biomass, which is mixed with a liquid inside a bioreactor, by means of ionising radiation. The following method steps are used: a) exposing a first partial volume of the liquid in the bioreactor to ionising radiation, the first partial volume comprising at most 10% of the liquid volume in the bioreactor; b) mixing the first partial liquid volume, which has been exposed to ionising radiation, with the second partial liquid volume, which has not been exposed to ionising radiation, in the bioreactor; c) repeating method steps a) and b) multiple times, each partial volume of the liquid in the bioreactor being exposed to a total radiation dose of at most 50 Gy on statistical average.

Method for stimulating the growth of a biomass, contained in a liquid, inside a bioreactor

The invention relates to a method for activating a photocatalytically active, for example titanium-dioxide-containing, outer layer () deposited on a composite, by means of at least one element () generating a radiation, for example for generating ultraviolet radiation. The following method steps are comprised here: •a) forming the at least one radiation-generating first element () within the composite; •b) forming at least one sensor () within the composite; •c) recording an actual value of a physical variable characterizing luminous radiation by means of the at least one sensor (), wherein the luminous radiation is emitted by a light-generating second element (); •d) comparing the recorded actual value with a first threshold value within an evaluation device and switching on the at least one radiation-generating first element () if the actual value is below or above the first threshold value.

Method for activating a photocatalytically active outer layer deposited on a composite

The present invention relates to a method for irradiating a population of mammalian cells comprising at least one target mammalian cell with electron beams and/or X-rays, characterized in that: (i) a composition comprising a population of mammalian cells is irradiated in vitro with electron beams and/or X-rays, the population of mammalian cells containing at least one target mammalian cell and the dose rate being within the range from 5 Gy/sec to 10Gy/sec, and (ii) optionally viable target mammalian cells are isolated or enriched from the population of mammalian cells, and to agents obtainable thereby and to uses thereof.

Method for irradiating mammalian cells with electron beams and/or X-rays

Methods and Apparatus are provided for irradiating a liquid with accelerated electrons. The liquid is prepared. The liquid is mixed with particles having at least one luminescent substance, where the particles are formed such that the particles are dispersed in the liquid after mixing. The liquid is irradiated with an electromagnetic radiation, which induces the at least one luminescent substance to luminesce. An actual value of a physical quantity characterizing the luminescence of the luminescent substance is detected. The liquid is irradiated with accelerated electrons until the detected actual value corresponds to a target value.

Method for irradiating a liquid with accelerated electrons

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Dresden, Germany

Jessy Schönfelder