http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
JinGu Lee,HeeDong Kim,ChangSung Kang,AeGyeong Seo,SangHyun Lee,YoungKyu Park,YoungBo Lee 한국응용곤충학회 2013 한국응용곤충학회 학술대회논문집 Vol.2013 No.04
Baculum elongatum has a long, thin shape that resembles a twig, propagates by parthenogenesis, changes body color, and drops eggs, all of which suggests its potential in the commercial market, especially as an educational pet insect. This study was carried out to determine the best hatching environment and an alternative or artificial diet for rearing B. elongatum to be developed as a commercial and educational pet insect. Oviposition was performed by females without fertilization by the sperm of males. The oviposition period was 42.2 ± 22.7 days and the number of eggs per female was 109.5 ± 70.5 eggs. The hatch rate was 73.3% at 25°C and 66.7% after low temperature treatment (8°C for 60 days). In nature, B. elongatum overwinters as an egg, but it can be assumed from the results that cold temperatures were not required for hatching. The hatch rate was 98.2% in the treatment using floral foam, fermented sawdust, and leaves. Clover(Trifolium repens) was an excellent diet as it was similar to the host plant and could be used as an alternative diet. The rate of reaching adulthood for the insects was 66.7% on an artificial diet containing 25% acacia leaves. For sustainable mass rearing of nymphs or adults of B. elongatum, a natural diet could be used such as acacia (Robinia pseudoacacia), white oak (Quercus aliena), chestnut (Castanea crenata var. dulcis), and bush clover (Lespedeza bicolor), or an alternative diet such as clover or artificial diet. To rear nymphs and adults of B. elongatum, natural diet such as acacia, white oak, chestnut, or bush clover leaves, or an alternative diet such as clover or an artificial diet can be used.
Proton-Induced Radiation Damage of Crystal Scintillators
김홍주,Heedong Kang,박환배,J.H. So,Kyeryung Kim,Sihhong Doh,김성환 한국물리학회 2008 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.52 No.3
We report results from a proton beam test to measure radiation damage and activation in crystal scintillators. Samples were irradiated with the 45 MeV proton beam from the MC-50 cyclotron at the Korea Institute of Radiological and Medical Sciences. Proton beam fluxes of 0.5 to 10 nA were used for the test. A PMT was attached to one side of the crystal and a 25 Mhz FADC (Flash Analog to Digital Converter) was used for the signal digitization. The light output and the energy resolution of the scintillation crystals with 662-keV gamma rays from a 137Cs radioactive source was measured prior to and after proton irradiation, and the result were compared with each other. Apart from an increase in the intrinsic activity, we did not observe any significant effect on the scintillation light output or the energy resolution of the LYSO crystal.
복합소재 Woven CFRT를 이용한 프론트 범퍼빔 개발 연구
최희동(Heedong Choi),이태민(Taemin LeeGiltong),이은호(Eunho Lee),한상경(Sangkyung Han),강창모(Changmo Kang) 한국자동차공학회 2016 한국자동차공학회 학술대회 및 전시회 Vol.2016 No.11
This paper discusses that development of front bumper beam using woven CFRT(Continuous fiber reinforced thermo plastic), also introduce the procedure to design optimized structure with light weight material. The optimum design has been reached by DFSS and CAE, and the performance proved low speed and high speed crash test. Through comparing with the performance of conventional high strength steel bumper beam, woven CFRT bumper beam has been verified to be one of the prospective alternative as a light weight solutions
Identification Scheme for the Affine Sensor Model
Donghoon Kang,Jong-Phil Kim,Jinwook Kim,Heedong Ko 제어로봇시스템학회 2010 제어로봇시스템학회 국제학술대회 논문집 Vol.2010 No.10
In this article, we present a robust auto-calibration scheme of the affine sensor model via the spectral decomposition of scale factor matrix and the semi-definite programming (SDP). Inherent benefits of our scheme are the globally optimal estimation of calibration parameters without any additional measurement equipment.
Gul Rooh,Heedong Kang,박환배,Jinho Moon,이상훈,김성환,Kyeryung Kim,김홍주 한국물리학회 2009 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.54 No.5
In this paper, we report on the scintillation properties of the K2CeCl5 single crystal before and after proton irradiation. The crystal of this scintillator was grown by using the Czochralski pulling technique and it was cut with dimension of 6×4×3 mm3. The scintillation properties, such as the absolute light yield, the proportionality of the response and the energy resolution, as functions of the γ-ray energy were calculated prior to the proton beam exposure. The light output deviates from a linear response by 10 % in the energy range between 31-keV and 1275-keV. Irradiation of the K2CeCl5 single crystal was carried out at the Korea Institute of Radiological and Medical Science. In order to measure the induced radiation damage in the K2CeCl5 crystal, we subjected the sample to the 45-MeV proton beam of the MC-50 cyclotron and the scintillation properties were measured prior to and after the irradiation. The emission spectra before and after the irradiation showed the same emission band between wavelengths of 350 nm and 400 nm with a peak center at 375 nm. After exposure to the proton beam, the K2CeCl5 single crystal showed a lower light yield and a deteriorated energy resolution. In addition, we compared the decay time of the crystal before and after the proton irradiation.
Development of a Portable Charge Integration Embedded DAQ Board for Beam Monitoring
Young Seok Hwang,박환배,Heedong Kang,Wan Kim,J. H. So,김성환,김홍주 한국물리학회 2009 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.54 No.5
We have developed an embedded Data AcQuisition (DAQ) board which has an Ethernet con- troller and a charge integrator. We could monitor the beam profile outside the beam line by using this system with an Ethernet connection. This embedded DAQ board consists of a microcontroller a network controller, field programmable gate array (FPGA) and a currentstodigital converter with a wide dynamic range, a variable integration time and a 20-bit resolution. The board was tested with a proton beam by using the MC-50 cyclotron at the Korea Institute of Radiological and Medical Sciences. The board was connected to a homemade ion-chamber and it took the currents signal from the ion-chamber directly. The signals were integrated by using the charge integration function of the board. The data were recorded through the Ethernet connection by using a personal computer. We monitored the beam condition with different beam currents from 1 nA to 10 nA We could successfully measure the dose of the 45-MeV proton beam with various beam currents by using this charge integration embedded DAQ board.
Measurement of Proton Beam Energy and Flux by Using a LYSO Crystal
강상준,김홍주,박환배,Heedong Kang,J. H. So,Kyeryung Kim,Sihhong Doh,Sungwhan Kim 한국물리학회 2008 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.52 No.3
We investigated the beam profiles of the 45-MeV proton beam from the MC-50 cyclotron at Korea Institute of Radiological and Medical Science. We used a 45-MeV proton beam of 0.2-nA beam current to measure the beam energy and flux. The 45-MeV proton beam passed through a 0.2-cm thick aluminum window capping the beam pipe and then was collimated to a 1-mm-diameter beam spot by using a 1-mm aluminum collimator. We examined the dependence of the energy profile of the proton beam on the transverse distance from the beam center by using the LYSO crystal scintillator. Also, the flux of the proton beam was measured with the LYSO crystal scintillator. Accurate information on the energy profile of the beam is important not only for understanding the characteristic of the beam but also for understanding the light output response of a scintillation crystal. From our investigation, the energy profiles of the beam at the near point from the center and some distance points from the center were found to be very different. Thus, it is very important to test the energy profile of the beam at the point where the detector will be located before one performs the beam test for a detector, such as a silicon sensor.