Abstract:
PURPOSE: A vacuum suction type of mud flat deposit collector has a sample collecting tube that can naturally enter inside a mud flat without applying artificial forces on a sample collection tube upon sample collection. CONSTITUTION: A vacuum suction type of mud flat deposit collector comprises the upper cap (30) and the cylinder rod (41). Said upper cap forms the cover (20) capable of opening and closing in the center of the top face. In said cylinder rod, a through-hole is formed in the center of said cover, around which the cylinder (40) and the first handle (10) are connected respectively to both end parts. A part of said upper cap is provided with the second handle (11). A lower part of said upper cap comprises the sample collection tube (50) that is divided into more than one and is connected.
Abstract:
본 고안은 유생 채집장치에 관한 것으로서, 내부공간을 가지는 본체와, 본체의 내부에 설치되어 중앙이 관통된 사각홀을 가지는 지지대와, 지지대의 관통된 사각홀에 위치하여 유입수로부터 유생을 걸러내며 적층 가능한 복수의 뮬러가제유닛들과, 뮬러가제유닛들을 통과한 유입수를 배출시키고 뮬러가제유닛들의 높이별로 본체 내부의 유입수의 수위를 조절하는 배출부를 구비한다. 이러한 유생 채집장치에 의하면, 유생 채집장치 내부로 낙하되는 해수에 대해 한번에 다양한 크기의 해양생물들을 선택적으로 분리되게 채집할 수 있으며, 뮬러가제유닛들의 높이마다 장착된 수위조절관들을 통하여 해수의 수위를 조절해 채집되는 해양생물의 생존율을 높일 수 있다. 유생, 채집, 해수, 필터, 뮬러가제, 해양생물
Abstract:
PURPOSE: A hatching apparatus of egg capsule is provided to enhance a hatching rate by flowing seawater into inner part of a hatching tank, to block inflow of harmful virus, and to protect marine univalve shell laying egg capsule. CONSTITUTION: A hatching apparatus of egg capsule comprises: a hatching tank(20) in which an egg capsule of univalve shell is moved by seawater; and a rearing tub(50) which is connected to the top of the hatching tank and in which a larva incubated in the egg capsule is flowed in from the hatching tank. The egg capsule accepted inside the hatching tank uses an egg capsule spawned from the adult of gastropods. The hatching tank includes a first main body of cylindrical shape.
Abstract:
An earth-anchor structure using an optical fiber embedded steel strand and a soundness monitoring method for the same are provided to test safety of the earth-anchor structure by measuring stress of the steel strand. An earth-anchor structure using an optical fiber embedded steel strand includes a first steel strand(21), six second steel strands(22), a through hole(211), and an optical fiber Bragg grating sensor(10). The first steel strand is positioned in the center straight forward. The six second steel strands are wound around the first steel strand. The through hole is formed on the center of the first steel strand. An optical fiber Bragg grating sensor is inserted into the through hole and installed in the first steel strand, and measures deformation rate of the steel strands for monitoring the earth-anchor structure.
Abstract:
A bridge structure using an optical fiber embedded steel strand and a soundness monitoring method for the same are provided to test safety of the bridge structure by measuring tension of the steel strand. A soundness monitoring method for a bridge structure using an optical fiber embedded steel strand includes the steps of: preparing a steel strand member(20), wherein the steel strand member consists of a first strand(21) in center and six second strands(22) wound around the first strand, and a through hole(211) is formed lengthwise of one of the first and second strands; inserting an optical fiber sensor(10) through the through hole of the steel strand for preparing the optical fiber embedded steel strand; constructing a bridge using the optical fiber embedded steel strand as a structural member for the bridge; and measuring deformation rate of the optical fiber embedded steel strand by detecting light passing through the optical fiber sensor.