An object of the invention is to provide a fan-beam antenna which comprises a flare which is long in a horizontal direction thereof and whose cross section is horn-shaped, and a water-proof box housing components of said antenna, in which a vertical beam width is made narrow without spreading a vertical size to increase gain. The polypeptide is a human chemokine receptor that is a member of a family of G protein-coupled receptors characterized by seven transmembrane domains. The sensor cage is connected to the housing by a circumferential weld seam only at one connection segment of the housing. In some embodiments, setting the current processor priority register of the selected processor to least favored is carried out by storing a value associated with the highest interrupt priority in the current processor priority register. A photodiode further comprises a voltage source being capable to apply a variable voltage between the first doping region and the lightly doped layer of the second doping region in order to vary the expansion of a space charge zone of the p-n junction. A method of making a rackable gate is disclosed.