Abstract:
The present invention relates to a liquid medium plasma discharge generating apparatus, and has the aim of providing a microtube liquid medium plasma discharge generating apparatus, capable of applying a high electric field even with low wattage by minimizing conduction current, by filling a liquid medium in a gap between a power electrode and a ground electrode and arranging a dielectric diaphragm member, defining one or more holes or slits, in the middle of the gap. To achieve the above aim, the present invention provides a liquid medium plasma discharge generating apparatus comprising: a main body; a power electrode, provided at one side within the main body, for receiving electric power; a diaphragm member provided within the main body, and consisting of a dielectric defining one or more holes or slits; and a liquid medium charged inside the main body, wherein a ground electrode may be further provided in the main body, opposite the power electrode with the diaphragm member therebetween, whereupon the diaphragm member is arranged contacting the ground electrode.
Abstract:
This invention relates to a negative active material for a lithium secondary battery, a method of preparing the same and a lithium secondary battery including the same. This negative active material exhibits high capacity and superior cycle-life characteristics and is thus usefully employed in a lithium secondary battery which shows high capacity during high-rate charge · discharge.
Abstract:
The present invention relates to an apparatus and a method for producing hydrogen gas. The hydrogen gas production apparatus of the present invention comprises a) a dielectric hollow tube, b) a means for maintaining the dielectric hollow tube to a reduced pressure, c) a microwave source that generates a microwave, d) a waveguide coupled to the microwave source that applies the microwave to the dielectric hollow tube, e) a gas supply source that supplies a hydrogen element-containing gas into the dielectric hollow tube, wherein the hydrogen element-containing gas supplied into the dielectric hollow tube undergoes plasma discharge with aid of the microwave from the waveguide and produces reaction products including hydrogen gas through intramolecular bond breakage rather than heat decomposition, by collision of an electron produced by the plasma discharge with the hydrogen element-containing gas, and f) a separator that separates the hydrogen gas from the reaction products. The hydrogen gas production apparatus has a simple constitution and provides small scaled production of the hydrogen gas in a simple and efficient manner.
Abstract:
The present disclosure relates to a biomarker for diagnosis of oral cancer, using metabolite profiling and, more specifically, to a biomarker composition containing an acyl carnitine metabolite which varies in quantity upon the onset of oral cancer, and a diagnostic method for oral cancer, using same. The present disclosure allows for the early diagnosis of oral cancer which has been conventionally difficult to diagnose due to the impossible tissue biopsy thereof, and can reduce the pain and risk burden of patients because it uses a liquid biopsy method in which a blood sample is collected and analyzed.
Abstract:
The present invention relates to a neovascular-targeting contrast medium composition and a method for preparing same. The neovascular-targeting contrast medium composition according to the present invention exhibits high binding force to neovascularization-associated α v β 3 integrin, excellent tissue permeability and biostability, enables simple measurement in vitro, in vivo, or ex vivo, and thus is effective in the detection of neovascularization and in diagnosing diseases associated therewith, and therefore may be usefully employed in the relevant industries.
Abstract:
The present invention relates to a three-dimensional cell culture container. A cell culture container according to the present invention may include: a barrier part composed of two or more pillars (110) provided on the top side of the lower plate; an upper plate (130) which finishes an opened end portion of the barrier part; and one or more cell sample injection guide parts (220) provided in one side of the upper plate. The present invention using such configurations can stably inject a sample including cells into an accurate position in a state that the sample leans on the guide parts, and the inlet guide may perform a barrier function such that a flow of the sample is directed toward the culture container, and the upper plate and the plurality of pillars facilitate an operation of an experimenter by performing a helping function such that an appropriate amount of sample is injected easily and uniformly, while the pillar parts spaced apart from one another at predetermined intervals enable a stable cell culturing process to be performed by performing a barrier function of preventing a gel-type sample from being discharged to the outside and performing a function of opening a space for exchanging materials with a medium in an external cell.
Abstract:
The present disclosure provides a sample holder assembly for a laser flash apparatus for measuring a thermal conductivity of a pebble-bed, the assembly comprising: a tubular sample container configured to be mounted on a sample carrier tube for the laser flash apparatus, wherein the sample container has open top and bottom; a bottom disc disposed in the sample container to block the open bottom of the sample container and configured for delivering a laser from a laser flash unit of the apparatus to a pebble-bed; the pebble-bed packed on the bottom disc to a predetermined thickness; and a top disc disposed on the pebble-bed and in the sample container to block the open top of the sample container and configured for receiving heat from the pebble-bed to transfer the heat upward.
Abstract:
A method for discovering pharmacologically active substances from natural products at high speed, including: obtaining an activity profile by testing pharmacological activity of a plurality of samples; obtaining mass profiles based on mass spectra resulting from analysis of the samples by mass spectrometry; and determining molecular weight of pharmacologically active substances by comparing and analyzing the activity profile and the mass profile. The method allows fast discovery of pharmacologically active substances by performing high resolution mass spectrometry for numerous components included in an extract sample of natural products and comparing with the activity test data. The information about the intensity of the activity of the pharmacologically active substances of the natural products allows effective utilization of the natural products.