Abstract: A thermophotovoltaic system is described. The thermophotovoltaic system includes a chamber body, an emitter, a filter and a photovoltaic cell. The chamber body has an ellipsoid chamber including a first focus and a second focus. The emitter is disposed on the first focus, and the emitter is suitable for emitting a plurality of electromagnetic waves. The filter is surrounding the emitter to filter the electromagnetic waves and to pass the electromagnetic waves with a predetermined wavelength band. The photovoltaic cell is disposed on the second focus and is suitable for receiving the electromagnetic waves with the predetermined wavelength band.

Abstract: A cell has a substrate, a first microstructure and an active layer. The first microstructure is formed on the substrate and has therein a first material with a concentration gradient toward one side of the substrate to provide a first built-in electric field. The active layer is mounted on the first microstructure so as to reduce recombination of electrons and holes in the cell.

Abstract: A solar cell includes a substrate; multiple silicon rods formed on a surface of the substrate; an insulator layer formed on the surface of the substrate while the silicon rods are still exposed; a silicon shell layer formed on outside of each of the silicon rods; and a InxGa1?xAsyP1?y layer formed on the silicon shell layer to form a first cell, wherein 0?x?1 and 0?y?1.

Abstract: The invention provides a composition for inhibiting cancer metastasis, including: an effective amount of an amino acid hydroxamic acid derivative having a formula as shown as formula (I), formula (II) or formula (III): and a pharmaceutically acceptable carrier or salt, wherein the amino acid hydroxamic acid derivative has an effect for inhibiting cancer metastasis.

Abstract: A thermophotovoltaic system is described. The thermophotovoltaic system includes a chamber body, an emitter, a filter and a photovoltaic cell. The chamber body has an ellipsoid chamber including a first focus and a second focus. The emitter is disposed on the first focus, and the emitter is suitable for emitting a plurality of electromagnetic waves. The filter is surrounding the emitter to filter the electromagnetic waves and to pass the electromagnetic waves with a predetermined wavelength band. The photovoltaic cell is disposed on the second focus and is suitable for receiving the electromagnetic waves with the predetermined wavelength band.

Abstract: A method for scavenging free radicals and inhibiting tyrosinase and melanin is provided. The method includes administering to a subject of effective amounts in a pharmaceutical composition comprising a compound of Formula (I) or (II) and a pharmaceutical acceptable salt, metal salt or solvent. In Formula (II), R is C1-6 alkyl, vitamin C or sugar. X is chlorine, bromine or iodine. The subject is a human. The pharmaceutical composition is for external and internal use.

Abstract: The present invention provides an extract of Taiwanese wild grape (Vitis thunbergii var. taiwaniana), which is prepared by extracting one or more tissues of Vitis thunbergii var. taiwaniana with 10 wt % to 100 wt % alcohol solution or water to obtain an extract solution, and then drying said extract solution. The extract of Vitis thunbergii var. taiwaniana of the present invention has the function of regulating blood pressure, and therefore can be used to prevent and treat hypertension. The present invention also provides a method for purifying (+)-vitisin A and ampelopsin C from Vitis thunbergii var. taiwaniana and a use of these two compounds for hypertension prevention and treatment.