Abstract: The invention relates to a synthesis of cholesterol; a ring opening step of the compound of formula (I) and subsequent activation and reduction step yielding cholesterol. The inventions relates also to intermediates achieved during said synthesis.

Abstract: A method for adjusting the apparent brightness of a computer-generated hologram display is disclosed. The method comprises: receiving source data representative of a scene to be displayed as a hologram; determining hologram data to display a computer-generated hologram representing the scene; determining a scene energy based on the source data, the scene energy being quantised using a scale which is non-linear and which has a closer spacing between values in a mid-section of the scale than between values towards a minimum and a maximum of the scale; associating the scene energy with the hologram data; controlling a holographic display according to the hologram data and simultaneously controlling an output power of an illumination source of the holographic display according to the scene energy. A holographic display apparatus implementing the method is also disclosed.

Abstract: An antenna apparatus is proposed, which can be operated outside in the vicinity around the antenna apparatus despite a shielding effect of an electrically conducting frame or electrically conducting housing. In the process, the electrically conducting frame or electrically conducting housing encloses a housing volume inside the housing, within said volume an electrically conducting connection being produced from a first to a second location of the electrically conducting frame or the electrically conducting housing. The first and the second locations are selected such that a radio resonance chamber is separated by a parallel radio resonance at a working frequency of the electronic device inside the enclosed housing volume by means of the electrically conducting connection.

Abstract: A housing antenna system is proposed, by means of which automatic mass production of basic electrical or electronic devices having such a housing antenna system may be carried out in an economical and time-saving manner. This is achieved in that the housing antenna system is based on pressure contacting between the metallic antenna housing and the associated electronic circuit in order to operate the antenna housing as a housing antenna, using elastic elements.

Abstract: An antenna apparatus is proposed, which can be operated outside in the vicinity around the antenna apparatus despite a shielding effect of an electrically conducting frame or electrically conducting housing. In the process, the electrically conducting frame or electrically conducting housing encloses a housing volume inside the housing, within said volume an electrically conducting connection being produced from a first to a second location of the electrically conducting frame or the electrically conducting housing. The first and the second locations are selected such that a radio resonance chamber is separated by a parallel radio resonance at a working frequency of the electronic device inside the enclosed housing volume by means of the electrically conducting connection.

Abstract: A housing antenna system is proposed, by means of which automatic mass production of basic electrical or electronic devices having such a housing antenna system may be carried out in an economical and time-saving manner. This is achieved in that the housing antenna system is based on pressure contacting between the metallic antenna housing and the associated electronic circuit in order to operate the antenna housing as a housing antenna, using elastic elements.