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

Siemens Aktiengesellschaft

Im Co., Ltd.

Joerg Opitz

Juergen Schreiber

Carola Gerich

Ralf Nanke

Jens Fehre

Georg Salomon

Bjoern Fischer

Petra Morgenstern

The invention relates to a method and to an apparatus for recognizing tumorous living cell tissue. It furthermore relates to a method and to an apparatus for recognizing tumorous cell tissue at collected living cell tissue samples. In the method, electromagnetic radiation is emitted with local definition onto cell tissue by a radiation source and, after deactivation of the radiation source, the decay behavior of the inherent fluorescence intensity of the cell tissue excited by the electromagnetic radiation is detected at the cell tissue in a time resolved and spectrally resolved manner at known sampling rate(s) for at least one wavelength using a detector. The difference autocorrelation function C(t) of the intensity decay behavior is determined using the determined measured intensity values, the fractal dimension Dfor the respective irradiated cell tissue is calculated from this and the value of the fractal dimension Dis used for a classification with respect to a presence of a tumor in the respective irradiated cell tissue.

Method and device for detecting tumorous living cell tissue

The invention relates to methods for determining the sex of birds' eggs. It can be used for an early determination of the sex, in particular in poultry farming, and in this respect also with non-incubated eggs. In the method in accordance with the invention, electromagnetic radiation is emitted onto the blastodisk of an egg by a radiation source and, after a switching off of the radiation source, the decay behavior of the autofluorescence intensity excited by the electromagnetic radiation is detected by a detector at the irradiated region of the blastodisk with time resolution and spectral resolution for at least one wavelength of the autofluorescence. The fractal dimension Dis calculated using the determined measured intensity values and the value of the fractal dimension Dis compared with a species-specific and sex-specific limit value, wherein, when the limit value is exceeded, the respective egg is classified as female and, when it is not reached, the egg is classified as male.

Methods for determining the sex of birds' eggs

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Dresden, Germany

Joerg Opitz