Abstract:
An apparatus for generating X-ray may include: a plasma chamber; a magnet unit for applying a magnetic field to the plasma chamber, the magnet unit configured to allow the control of the magnitude of the minimum magnetic field in the plasma chamber without change in structure; a microwave generator for applying microwaves to the plasma chamber; a reaction gas injected into the plasma chamber for generating X-ray through electron cyclotron resonance by the magnetic field and the microwaves; a variable guide for focusing the generated X-ray; and a variable extractor for outputting the focused X-ray from the plasma chamber.
Abstract:
An apparatus for transferring cryogenic refrigeration includes a cryocooler interface, a housing, a working fluid, a heat exchanger, a flexible thermal link, and a remote cartridge cold head. The cryocooler interface is thermally connected to a cryocooler providing a source of refrigeration. The refrigeration is passed from the crycooler into the heat exchanger via the cryocooler interface. The remote cartridge cold head is attached to a remote location. Heat is drawn from the remote location through the remote cartridge cold head and into the heat exchanger via the working fluid within the flexible thermal link and housing. Within the heat exchanger, heat is transferred from the working fluid to the refrigeration source, such as a cryocooler; accordingly, the remote location is cooled.
Abstract:
Provided are β-substituted Morita-Baylis-Hillman (MBH) derivatives, pharmaceutically acceptable salts, hydrates, solvates and stereoisomers thereof. The derivatives may be prepared by preparing β-iodo-MBH esters from a variety of carbonyl compounds such as aldehydes and ketones, or imines in the presence of a Lewis acid as a basic backbone, and substituting iodide on a vinyl position with a variety of substituents. In addition, the β-substituted MBH derivatives have an excellent pharmaceutical effect in preventing and treating cancer.
Abstract:
The present invention relates to a method for analyzing modified polypeptide sequence and modified information thereof. More precisely, the invention relates to a method for identifying modified peptide in which fragment ion signals are obtained from target peptide precursor by using tandem mass spectrometry, candidate peptides and every possible peptide fragmentation patterns thereof are designed based on the mass data thereby, match scores corresponding to each fragmentation pattern of candidate peptides are given, and then by combining each matching scores derived from possible fragmentation patterns of a candidate peptide, modified target polypeptide is identified by tandem mass data based on the provided match score. The scoring method for modified polypeptide of the present invention can greatly contribute to increasing searching efficiency of modified peptides and reliability of the searching results by integrating all scored values obtained from different fragmentation patterns of a candidate peptide.
Abstract:
Disclosed herein is an electrochemical measurement system for analyzing heavy metals in organic compound-containing samples, comprising: a lower plate; a flow channel plate; an upper plate; an organic compound-decomposing electrode and a heavy metal analysis electrode; and a flow changeover portion. The disclosed system can continuously perform a pretreatment process for organic compound decomposition and a process for heavy metal analysis, thus making it possible to achieve the selective analysis and separation of heavy metals in wastewater. Also, it can substitute for expensive spectrophotometric analysis equipment and makes it possible to monitor trace heavy metals on-line in situ. In addition, it may include a small-sized battery as a power source, such that it is easy to carry and use.
Abstract:
The present invention relates to an apparatus for generating neutral particle beam with enhanced neutral particle flux. The apparatus of the present invention comprises a plasma discharging space inside which processing gases are converted into plasma ions through a plasma discharge, a metal plate which converts the plasma ions into neutral particles through collisions with the plasma ions, a plasma limiter which prevents the plasma ions and electrons from passing through and allows the neutral particles produced by collisions of the plasma ions with the metal plate to pass through, and a magnetron unit which applies magnetic field to the plasma discharging space, wherein the plasma discharging space is sandwiched between the metal plate and the plasma limiter, and the magnetron unit applies the magnetic field across the metal plate to the plasma discharging space to control plasma distribution. Preferably, the magnetron unit comprises a central pole and a side pole having a race track arrangement. The magnetic field applied across the metal plate increases density of the plasma ions near the metal plate. This improves the conversion efficiency of the plasma ions into the neutral particles to increase neutral particle flux.
Abstract:
There is provided an apparatus for generating solid element neutral particle beam. The apparatus comprises a) a plasma discharging space inside which a plasma discharge takes places to produce plasma, b) a solid element coating layer positioned at side of the plasma discharging space to which a first bias voltage is applied to drive plasma ions to the solid element coating layer, c) a first magnetron unit that applies magnetic field across the solid element coating layer, and d) a metal plate positioned at top of the of the plasma discharging space to which a second bias voltage is applied to drive solid element cations to the metal plate. Preferably, the apparatus further comprises a second magnetron unit that applies magnetic field across the metal plate. Par¬ ticularly preferable is that each of the first and second magnetron units comprises a central pole and a side pole having a race track arrangement. The apparatus is useful for surface treatment.
Abstract:
Disclosed is a method for manufacturing an ultra-thin carbon support film. The method provid es the ultra-thin carbon support film used as a specimen for high resolution transmission electron microscope (HRTEM) analysis for analyzing atom structures of nano-particle specimens. The ultra-thin carbon support film is fabricated such that a large- sized holy region is formed in the ultra-thin carbon support film, so that it is possible to obtain images of particles lying on the holy region through the HRTEM analysis while minimizing the size of the support film in the images. The ultra-thin carbon support film has a thinner thickness while maintaining structural and thermal stabilities, so the ultra-thin carbon support film is advantageously used for the HRTEM analysis of specimens.
Abstract:
The object of this invention is to provide a phase stabilization device for stimulated brillouin scattering-phase conjugate mirrors and a light amplification apparatus using the phase stabilization device. A light amplification apparatus of the present invention includes a polarizer (70) for polarizing light beams reflected from a plurality of stimulated brillouin scattering-phase conjugate mirrors and causing the light beams to interfere with each other. A detector (80) acquires an interfering beam resulting from interference of the polarizer (70), and outputs the interfering beam. A phase controller (90) controls phase using the interfering beam acquired by the detector. Therefore, the apparatus of the present invention can stably lock the phase for a long period of time, and can be used in various industries and for scientific research in cases where a high repetition rate and high power are required.
Abstract:
A cooling system for superconductive magnets according to the present disclosure includes a vacuous container, a superconductive magnet forming a magnetic field, a superconductive magnet bobbin surrounding the superconductive magnet and made of thermally conductive material, a freezer for exchanging heat with the superconductive magnet bobbin to cool the superconductive magnet, a vibration-type heat pipe contacting the superconductive magnet bobbin to induce heat exchange with the freezer, and a radiation shield for blocking heat radiation introduced to the superconductive magnet. Therefore, it is possible to implement a stable cyrogenic cooling system, which may eliminate the generation of a temperature gradient between the freezer and the superconductive magnet so that the superconductive magnet may be efficiently cooled and may recover a superconducting status within a short time.