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A light-emitting diode device includes a substrate, an epitaxial layer and a first electrode. The epitaxial layer is disposed on the substrate. The first electrode is disposed on the epitaxial layer and includes a connecting portion and a conductive finger. The conductive finger has a first end and a second end, and the first end is connected to the connecting portion. At least one portion of the conductive finger is tapered along an extending direction of the conductive finger.

The purpose of the invention is to provide an adsorbent for oral administration capable of eliminating the gritty feeling in the oral cavity caused by fine granules, decreasing the volume to be administrated as compared with a capsule, and being easily taken. The invention addresses this by providing a tablet-type composition for oral administration including 65% by weight or more of particulate substance as an active ingredient and one or more additives, characterized in that (a) the particulate substance does not exhibit solubility to water and swelling properties, and has a distortion factor of 2% or less at a pressure of 2 MPa and a crushing strength of 5 MPa or more, (b) the one or more additives for particulate formulations are contained in a total amount of 1% by weight or more relative to the tablet-type composition for oral administration, and the additives for particulate formulations form a thin film when 0.5 mL of 1% by weight aqueous solution or aqueous dispersion solution of the additives for particulate formulations is added dropwise to a plane surface of a fluorine resin, heated, and dried.

The invention discloses a laminated neutron radiation shielding composite material and a preparation method thereof; the laminated neutron radiation shielding composite material is in a three-layer composite structure, wherein a bottom layer is a polyethylene fiber reinforced epoxy resin matrix, a middle layer is a boron fiber reinforced epoxy resin matrix, and an upper layer is a polyethylene fiber reinforced epoxy resin matrix which is grafted with acrylic lead. The epoxy resin matrixes comprise materials basically in the following weight portions: 100 portions of bisphenol A epoxy resin, 8 portions to 15 portions of imidazole curing agent and 3 portions to 7 portions of silane coupling agent. In addition, boron carbide (B4C) which occupies 5 weight percent to 20 weight percent of the total weight of the epoxy resin is added into the epoxy resin matrix on the bottom layer; and lead oxide which occupies 10 weight percent to 30 weight percent of the total weight of the epoxy resin is added into the epoxy resin matrix on the upper layer. The laminated neutron radiation shielding composite material is specially manufactured to overcome the defects of a traditional neutron radiation shielding composite material that slowing and absorption functions are not separated so that the functions of an absorbing body cannot be displayed well.

The invention relates to an ink recording device, a residual ink container comprising laminated members for absorbing residual ink not used for recording, wherein the laminated members are laminated with a gap between adjacent ones of the members; and a covering member covering such that non-contact portion is provided between the covering member and a topmost one of the laminated member so as not to press against the topmost one.