Abstract: In order to reduce, at the time when an opening of an accommodation bag is sealed, wrinkles that occur at the accommodation bag, a sealing device (1) includes: a contact member (10) configured to be inserted into an accommodation bag (B1) accommodating a polycrystalline silicon material (S1); a sealing member configured to seal a sealing area (SE); a driving mechanism (20) configured to drive the contact member (10) so as to pull an opening (B2); and a sandwiching member (30) configured to be able to sandwich the accommodation bag (B1) for a second distance (D2) shorter than a first distance (D1) that is a length of the accommodation bag (B1) along the opening (B2) of the accommodation bag (B1).

Abstract: A polycrystalline silicon block fracture device includes a fracturing part mechanically fracturing a polycrystalline silicon block material to produce a polycrystalline silicon fragment including a polycrystalline silicon powder having a particle size of 500 to 1000 ?m then discharging from a discharging port; a falling movement part continuous with a downstream of the fracturing part allowing said polycrystalline silicon fragment discharged from the discharging port to fall by gravity; a receiver part positioned at downstream of the falling movement part and receives the polycrystalline silicon fragment after falling through the falling movement part; and the falling movement part includes a suction removing part in which at least part of the polycrystalline silicon powder included in the polycrystalline silicon fragment is removed by suctioning to a different direction from falling direction; the suction removing part suctions at a suction rate of 1 to 20 m3/min.

Abstract: Polycrystalline silicon fragments obtained by fracturing polycrystalline silicon blocks wherein a content ratio of polycrystalline silicon powder having a particle size of 500 to 1000 ?m is 0.1 to 40 ppmw.

Abstract: Polycrystalline silicon fragments obtained by fracturing polycrystalline silicon blocks wherein a content ratio of polycrystalline silicon powder having a particle size of 500 to 1000 ?m is 0.1 to 40 ppmw.

Abstract: Polycrystalline silicon fragments obtained by fracturing polycrystalline silicon blocks wherein a content ratio of polycrystalline silicon powder having a particle size of 500 to 1000 ?m is 0.1 to 40 ppmw.

Abstract: A device for producing a cleaned crushed product of polycrystalline silicon blocks is provided with: a) a conveying belt conveyer for a crushed product of polycrystalline silicon blocks; b) a gas stream-injector for blowing away fine powders mixed in the crushed product of polycrystalline silicon blocks, the injector being placed above a travel surface of the conveying belt of the conveying belt conveyer; and c) a mesh for preventing scattering of the crushed product of polycrystalline silicon blocks, the mesh being placed between the travel surface of the conveying belt and the gas stream-injector.

Abstract: A cerebral local portion cooling probe is composed so that a handheld module includes a Peltier device and a coolant liquid circulating part arranged so as to contact with the Peltier device and wirings, conduits and a heat radiating part are connected to this handheld module. Circulation of coolant liquid and operation of the Peltier device are implemented by means of a control unit, then the tip end of the handheld module is caused to contact with a cerebral local portion to be cooled and a state of the cerebral local portion is monitored in accordance with responses to the cooling. A cerebral function mapping device comprises a mapping module in which a plurality of cooling modules are arranged, each cooling module including a Peltier device and a coolant liquid circulating part in a manner similar to that of the cerebral local portion cooling probe.

Abstract: A paving arrangement for coating a base with a self-setting synthetic molding material comprises a rigid frame in the form of a shallow box having an open bottom. The frame is supported by a pair of sleigh members mounted on the lower portion of the frame in spaced relationship from each other so that the frame can be slid over the base. One of the sleigh members is shorter than the other and has its rear end terminating forwardly of the rear end of the longer sleigh member. A hopper is mounted on the frame for storing therein the molding material. A transversely elongate outlet opening is formed at the bottom of the hopper at a position rearwardly of the rear end of the shorter sleigh member and extending in the transverse direction between the inner edge of the longer sleigh member and an imaginary extension of the outer edge of the shorter sleigh member.

Abstract: A method for installation of a grounding pole by boring in advance a hole with a desired depth into the earth, fitting a tip end of a grounding pole with a length almost equal to the depth of the hole to a guide tube and inserting the grounding pole with the guide tube faced down into the hole.