Abstract: A ceiling fan and a structure thereof are provided. The structure includes a blade holder, a plurality of blades, and a plurality of positioning elements. The blade holder includes a holder body and a plurality of support platforms. The holder body has a plurality of first matching structures spaced apart from each other. Each of the support platforms includes a first positioning structure. Each of the blades has a second matching structure and a second positioning structure. The second matching structures can be guided by the first matching structures, so that each of the blades is disposed at an installation position on one of the support platforms along an oblique track. When each of the blades is located at the installation position, the first positioning structures and the second positioning structures abut against each other.

Abstract: A polyacetylenes and application thereof. The polyacetylenes is isolated from an extract of the sporophores of Antrodia Cinnamomea and has a function of inhibiting the production of nitric oxide. Therefore, the polyacetylenes can be used for preparing a pharmaceutical composition for anti-inflammation. The present invention also teaches the representative metabolites of the sporophores of Antrodia Cinnamomea, which can be used to evaluate the quality thereof.

Abstract: A mobile communication apparatus is provided. The mobile communication apparatus includes an input device, a storage device, a processing device and a sounding device. The storage device stores a plurality of phone numbers and a plurality of dual tone multiple frequency (DTMF) sound data. The processing device is electrically connected to the input device and the storage device for outputting a phone number, and the sounding device is electrically connected to the processing device for sounding a DTMF sound corresponding to the phone number according to the DTMF sound data.