Abstract:
Disclosed are a device and a method for promptly and accurately calculating the speed distribution of a fluid by collectively processing image data obtained by photographing the flow within a microfluidic channel having distracted fluorescent tracer particles of thin concentration, and a computer readable recording medium for recording a program to perform the method. The device and the method of the present invention can supply a suspended fluid having the distracted tracer particles to the microfluidic channel, obtain multiple sets of image data including one or multiple particle traces during the exposure time of a camera through the observation using a fluorescent microscope, and very promptly and accurately calculate the speed distribution of the fluid by collectively processing the obtained image data. The calculated speed distribution of the fluid can provide very important information associated with the flow control, the distraction control, the separation and/or the analysis.
Abstract:
The present invention relates to a method for analyzing coupling efficiency of adhesive nano particles, comprising the steps of (a) injecting a solution including nano particles into a first chamber slide; (b) vaporizing only the solution from the first chamber slide into which the solution including nano particles is injected and irradiating light from a light source to measure a saturation temperature by a thermal observation acquisition device; (c) injecting cells into a second chamber slide; (d) injecting the solution including nano particles into the second chamber slide in which the cells are cultured; (e) removing the nano particles which are not coupled to the cells from the second chamber slide into which the cells and nano particles are injected; (f) vaporizing only the solution from the second chamber slide from which the nano particles are removed and irradiating light from the light source to measure the saturation temperature by a thermal observation acquisition device; and (g) comparing the number per area of the nano particles injected into the first chamber slide and the number per area of the nano particles injected into the second chamber slide at the same saturation temperature between the step (b) and the step (f). [Reference numerals] (a,b,c,d) Measure a saturation temperature according to concentration; (AA) GNP solution; (BB) High concentration; (CC) Low concentration; (DD,HH,OO,TT) Temperature; (EE,II,PP,UU) Saturation temperature; (FF,JJ,QQ,VV) Time; (GG) Medium solution; (KK) Cell medium solution; (LL) Combined GNP solution; (MM,RR) GNP high concentration; (NN,SS) GNP low concentration
Abstract:
본 발명은 발라스트수 내에 포함되어 있는 미생물 및 기타 입자성 물질을 효과적으로 제거할 수 있는 분리막을 이용한 발라스트수 처리장치 및 이를 이용한 발라스트수 처리방법에 관한 것으로서, 본 발명에 따른 분리막을 이용한 발라스트수 처리장치는 선박의 일측에 구비되어 해수를 취수하는 취수 펌프와, 취수된 해수 내에 포함되어 있는 미생물 및 입자성 물질을 걸러내는 분리막 및 상기 분리막을 통과한 처리수를 저장하는 발라스트 탱크를 포함하여 이루어지는 것을 특징으로 한다. 역세척용 탱크가 더 구비되며, 상기 발라스트 탱크 내의 처리수가 상기 역세척용 탱크에 역세척수의 용도로 공급되며, 상기 역세척용 탱크는 상기 분리막에 역세척수를 공급하여 상기 분리막 상의 이물질을 제거할 수 있다. 발라스트수, 분리막
Abstract:
본 발명은 미세채널이 형성되어 있는 마이크로플루이딕 칩을 세척하기 위한 세척 장치에 관한 것이다. 본 장치는 세척하고자 하는 마이크로플루이딕 칩을 안치시키는 칩 고정부, 및 세척수의 유로(flow path)를 적절히 분배하는 유로 제어기를 포함한다. 본 발명에서 상기 유로 제어기는 세척수가 흐르는 유로를 적절히 제어할 수 있어서, 원하는 위치의 채널을 세척하거나 이미 형성된 오염을 용이하게 제거할 수 있다. 세척(clean-up), 랩온어칩(lab-on-a-chip), 전기영동(electrophoresis), 미세채널(microchannel), 마이크로플루이딕스(microfluidics)
Abstract:
본 발명은 폴리카보네이트, 폴리에스테르, 폴리염화비닐 등으로 된 유기고분자 멤브레인을 불소가 함유된 가스로 처리하여 표면 특성을 개질하는 방법에 관한 것으로, 장시간 사용해도 여과 성능이 저하되지 않도록 불소가스와 비활성가스의 혼합가스로 친수성으로 개질하는 방법을 제공하는 것이 목적이다. 본 발명의 유기고분자 멤브레인 표면의 친수화 개질방법은 (a) 멤브레인을 세척하여 건조시키는 단계와, (b) 불소가스와 질소, 헬륨, 아르곤 등의 희석가스와 혼합하여 원하는 농도의 혼합가스를 만드는 단계와, (c) 불소를 함유하는 혼합가스로 멤브레인을 개질 반응시키는 단계를 포함한다. 수처리용 유기고분자 멤브레인의 표면을 불소화 개질하면 원래의 유기고분자 멤브레인보다 전기적으로 음성을 띄는 친수성 표면을 형성할 수 있고, 따라서 더 높은 물 투과도를 얻을 수 있으며, 동시에 콜로이드 입자에 의한 막 오염 현상에 대한 저항성이 증가하여 오래 동안 효과적으로 콜로이드 수용액을 여과할 수 있다.
Abstract:
PURPOSE: An apparatus and a method for measuring a diffusion coefficient of a nano particle fluid are provided to measure the diffusion coefficient at a micro pore of a hollow fiber membrane. CONSTITUTION: An apparatus for measuring a diffusion coefficient of a nano particle fluid includes a hollow fiber membrane(110) and a diffusion cell(100) provided at an outer portion of the hollow fiber membrane(110). Particle distribution liquid flows through the hollow fiber membrane(110). A shell-side is provided in the diffusion cell(100). Particles pass through a tube-side(114) of the hollow fiber membrane(110) installed in the diffusion cell(100) and move into the shell-side through a micro pore(112). The diffusion cell(100) maintains a constant temperature.
Abstract:
PURPOSE: A preparation method of heteropoly acid catalyst useful in preparing methacrylic acid by gas phase oxidation of methacrolein is provided, and a method for preparing methacrylic acid using catalyst prepared by the method is provided. CONSTITUTION: The preparation method of heteropoly acid catalyst comprises the steps of recrystallizing the dissolved solution using reduced pressure or vacuum drying by dissolving heteropoly acid, heteropoly acid salt or a mixture thereof into a basic organic solvent; and heat treating the recrystallized material, wherein the heteropoly acid is one or more acids selected from 12-molybdophosphoric acid (H3PMo12O40), 12-tungstophosphoric acid (H3PW12O40), 12-silicotungstic acid (H4SiW12O40), 12-molybdotungstophosphoric acid (H3PMo12-xWxO40, x=0 to 12), 12-molybdovanadophosphoric acid (H3+xPMo12-xVxO40, x=0 to 12), 18-molybdovanadophosphoric acid (H6+xP2Mo18-xVxO62, x=0 to 18), and 18-tungsto niobium phosphoric acid (H6+xP2W18-xNbxO62, x=0 to 18), wherein a part or all of hydrogen ions of heteropoly acid in the heteropoly acid salt is substituted by one or more metallic atoms selected from groups 1A to 7A, groups 1B to 5B and group 8B on the periodic table, and wherein the basic solvent is one or more solvents selected from aniline, dimethylformamide, quinoline, tetrahydrofuran, dimethylacetamide, pyridine, dimethylsulfoxide, ethylamine, N-methylpyrrolidone and butylamine.
Abstract:
PURPOSE: An apparatus and method is provided to measure, in an accurate and quantitative manner, the very fine differences of flow potential for pores of a hollow fiber membrane. CONSTITUTION: An apparatus comprises a thermostatic feed tank(11) containing electrolyte solution; a unit including a conductance meter(12a) and a pH meter(12b) for measurement of physical properties of the solution contained in the thermostat feed tank; a pump(13) for transferring the solution from the thermostat feed tank to a membrane module; the membrane module including a hollow fiber membrane(21), an internal electrode(22) penetrating through the hollow fiber membrane, an external electrode(23) mounted in the vicinity of the hollow fiber membrane, and a connection portion(24) for connecting the main body of the membrane module and an electrolyte solution channel; a unit for measuring and controlling pressure difference between the interior and exterior of the hollow fiber membrane; a unit(40) for measuring and recording flow potential difference generated from each electrode; and a computer(50) for calculating zeta potential and surface charge density from the physical properties, pressure difference and flow potential difference.