Abstract: Method for the disinfection and the quality control of the disinfection of the hands of a user comprising the steps of: dispensing a predetermined amount of the mixture of a disinfectant substance and a light reflection modifying substance on the hands to be disinfected, allowing the user to smear and rub the mixture on his/her hands, inserting the hands one after the other into an imaging compartment (11) of an apparatus (10) for disinfection quality control; illuminating the inserted hand with light sources (14) emitting light having a predetermined spectral distribution and intensity; recording the image of the hand (9) from both sides by cameras (16); processing the recorded image to provide distinction between areas of the hand contacted and non-contacted by the mixture, wherein the light reflection modifying substance is a substance that absorbs light in at least a predetermined range a wavelength which is added to the disinfectant substance in an amount that decreases light absorption of areas treat

Abstract: An LED light bulb includes a stand, a plurality of LED light sources supported by the stand and arranged along edges of at least two geometric shapes, and an envelope enclosing the stand and the plurality LED light sources. A method of assembling an LED light bulb includes arranging a plurality of LED light sources along edges of at least two geometric shapes, supporting the arrangement of LED light sources on a stand, and enclosing the plurality of LED light sources and the stand within an envelope.

Abstract: An LED light bulb includes a stand, a plurality of LED light sources supported by the stand and arranged along edges of at least two geometric shapes, and an envelope enclosing the stand and the plurality LED light sources. A method of assembling an LED light bulb includes arranging a plurality of LED light sources along edges of at least two geometric shapes, supporting the arrangement of LED light sources on a stand, and enclosing the plurality of LED light sources and the stand within an envelope.

Abstract: Method for the disinfection and the quality control of the disinfection of the hands of a user comprising the steps of:—dispensing a predetermined amount of the mixture of a disinfectant substance and a light reflection modifying substance on the hands to be disinfected,—allowing the user to smear and rub the mixture on his/her hands,—inserting the hands one after the other into an imaging compartment (11) of an apparatus (10) for disinfection quality control;—illuminating the inserted hand with light sources (14) emitting light having a predetermined spectral distribution and intensity;—recording the image of the hand (9) from both sides by cameras (16);—processing the recorded image to provide distinction between areas of the hand contacted and non-contacted by the mixture, wherein the light reflection modifying substance is a substance that absorbs light in at least a predetermined wavelength range which is added to the disinfectant substance in an amount that decreases light absorption of areas treated by

Abstract: An LED light bulb includes a stand, a plurality of LED light sources supported by the stand and arranged along edges of at least two geometric shapes, and an envelope enclosing the stand and the plurality LED light sources. A method of assembling an LED light bulb includes arranging a plurality of LED light sources along edges of at least two geometric shapes, supporting the arrangement of LED light sources on a stand, and enclosing the plurality of LED light sources and the stand within an envelope.

Abstract: An LED light bulb includes a stand, a plurality of LED light sources supported by the stand and arranged along edges of at least two geometric shapes, and an envelope enclosing the stand and the plurality LED light sources. A method of assembling an LED light bulb includes arranging a plurality of LED light sources along edges of at least two geometric shapes, supporting the arrangement of LED light sources on a stand, and enclosing the plurality of LED light sources and the stand within an envelope.

Abstract: Catalyst for carrying out heterogeneous catalytic chemical reactions. The catalyst is a composite comprising a solid carrier and at least one member of the group of carboxymethane sulfonic acid and products resulting from the thermal treatment thereof at a temperature not exceeding 350.degree.C. The catalyst is prepared by impregnating the carrier carboxymethane sulfonic acid or a precursor or precursors thereof, drying the impregnated carrier at a temperature not exceeding 170.degree.C and baking the so dried product at 170.degree. to 330.degree.. Examples of catalytic reactions that are successfully carried out with such a catalyst are production of alcohols by hydration of olefins, production of esters from acids and olefins, production of esters from alcohols and alkylation of aromatic hydrocarbons.