Abstract: A board including a plurality of elongate members and first and second non-permeable first fiber reinforced material layers. Each of the plurality of elongate members are cooperatively positioned to form a perimeter of a polygon. The non-permeable first fiber reinforced material layer is secured to a top surface of the perimeter of the polygon. The non-permeable second fiber reinforced material layer is secured to a bottom surface opposing the top surface of the perimeter of the polygon. A void is defined within the perimeter of the polygon between the first fiber reinforced material layer and the second fiber reinforced material layer.

Abstract: A board including a plurality of elongate members and first and second non-permeable first fiber reinforced material layers. Each of the plurality of elongate members are cooperatively positioned to form a perimeter of a polygon. The non-permeable first fiber reinforced material layer is secured to a top surface of the perimeter of the polygon. The non-permeable second fiber reinforced material layer is secured to a bottom surface opposing the top surface of the perimeter of the polygon. A void is defined within the perimeter of the polygon between the first fiber reinforced material layer and the second fiber reinforced material layer.

Abstract: A structure for containing a lighting unit is provided. The structure includes a circular container having a circular slot, and a fixing unit having a clamp portion and a connector portion, wherein the connector portion is disposed in the circular slot and slidable therein.

Abstract: A heating unit having a heating function is provided in the present invention. The heating unit comprises a lighting device, a case containing the lighting device, a heating device formed on the case for heating the case, a heat sensor having a preset value and electrically connected to the heating device for detecting a thermal parameter of the lighting device, and a timer having a preset period and electrically connected to the heating device, wherein the heating device is shut off by the heat sensor when the thermal parameter is a temperature and higher than the preset value or by the timer when the thermal parameter is a heating time of the heating device and longer than the preset period.

Abstract: A heating system and a heating method for heating a light unit are provided. The heating system mainly includes a heater for heating the light unit and a heat sensor electrically connected to the heater for detecting a thermal parameter of the light unit. In the provided heating system, the heater is cut off by the heat sensor when the thermal parameter is higher than a preset value.

Abstract: Novel peptide hormones which influence the release of gonadotropins by the pituitary gland in fish are disclosed. Methods in which such peptides may be administered to fish to control their reproduction are also described. Furthermore, novel isolated cDNA encoding the precursor of the novel gonadotropin-releasing hormone is disclosed. The use of such cDNA in controlling the gonadal development and spawning of fish is also described.