Abstract:
본 발명은 갯벌 퇴적물의 단면을 조사하기 위해 필요한 시료를 채취하는데 사용하는 시료 채취기에 관한 것으로, 상면중앙의 개폐 가능한 덮개가 형성된 상부 캡, 상기 덮개 중앙에 통공이 형성되고 통공을 중심으로 양단부에 각각 실린더와 제1 손잡이를 연결하는 실린더봉으로 이루어지고 상기 상부캡의 일부에는 제2손잡이가 형성되고 하부에는 하나 이상으로 분할되어 연결되는 시료 채취관으로 이루어져, 부드러운 갯벌 등으로 형성된 특히 시료 채취시, 시료채취관에 인위적인 힘을 가하지 않더라도 시료채취관이 자연스럽게 갯벌 속으로 진입하여 들어갈 수 있도록 시료 채취관 내부를 진공상태로 만들도록 하여 갯벌 퇴적물의 붕괴를 방지하면서 깊은 곳까지 연속적으로 시료를 채취할 수 있도록 한 진공 흡인식 갯벌 퇴적물 채취기를 제공한다.
Abstract:
PURPOSE: A method for producing a large amount of cyanobacteria is provided to improve productivity and to enhance growth and immunity. CONSTITUTION: A method for producing a large amount of cyanobacteria comprises: a step of inoculating germs into a medium and culturing at 3500-5800lux and 30-35°C; a step of isolating cyanobacteria cultures in the medium; and a step of processing the isolated cyanobacteria by drying. The medium is an organic medium using pig stool powder. The isolation is performed using a filter.
Abstract:
PURPOSE: A cable excitation method for a bridge is provided to improve reliability on a test by supplying vibration of large amplitude to a bridge cable. CONSTITUTION: A cable excitation method for a bridge is as follows. A frequency of vibration of normal mode is detected, and the cable for the bridge receives exciting force(200). The exciting force is offered to the cable for the bridge in a normal direction(300). The frequency vibration of normal mode of the cable is tuned(500). The excitation device is established with the driving part and moves about the cable for the bridge in a normal direction(100).
Abstract:
PURPOSE: A larva collecting apparatus is provided to enable selective collection of various marine lives at a time by dropping seawater. CONSTITUTION: A larva collecting apparatus comprises a main body(10), a support(20), a Muler gauze unit(30), and an exhaust unit. The main body has an internal space. The support is installed inside the main body and has a mounting unit. The Muler Gauze unit is mounted in the mounting unit. The exhaust unit discharges the inflow water passing through the Muler Gauze units.
Abstract:
PURPOSE: A nutrition enhancing agent for marine cultivation is provided to promote the growth of shellfish and fish eating marine microalgae and to enhance the immune function of the shellfish and fish. CONSTITUTION: A nutrition enhancing agent for marine cultivation is produced by the following steps: cultivating microalgae at a density of 10million cell/ml; condensing the cultivated microalgae using a hollow fiber membrane filter to maintain living cells; freezing the condensed microalgae; and microencapsulating the obtained unsaturated fatty acid. The hollow fiber membrane filter includes pores with a size smaller than 0.01micrometers.
Abstract:
PURPOSE: A monitoring method of an underground pipe using optical fiber is provided to use any kind of underground pipe, to have low probability of loss of optical fiber while attaching the optical fiber, and to accurately measure water leakage or deformation of an underground pipe. CONSTITUTION: A monitoring method of an underground pipe using optical fiber comprises the following steps. A first resin(10) is spread on the surface of an underground pipe(P) along the longitudinal direction and dried. Optical fiber(20) is attached on the first resin layer. A second resin(40) is spread on the optical fiber and dried. Temperature and strain are measured by analyzing reflected light from the fixed optical fiber by the first resin and the second resin.