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Prototype HTS Quadrupole Magnet for the In-Flight Fragment Separator of RISP
Jo, Hyun Chul,Kim, Do Gyun,Choi, Sukjin,Jang, Hyun Man,Sim, Kideok,Kim, Seokho Institute of Electrical and Electronics Engineers 2018 IEEE transactions on applied superconductivity Vol.28 No.6
<P>The Rare Isotope Science Project (RISP) for constructing a heavy ion accelerator complex was launched in 2011 in Korea. As one of the rare isotope production systems, an in-flight fragment (IF) separator system will be installed for the RISP. We plan to use high-temperature superconducting (HTS) quadrupole magnets in the forepart of the IF separator to cool efficiently the magnets from large radiation heat load at around 40 K. The HTS quadrupole magnet should withstand a high radiation dose (∼10 MGy/year). A prototype HTS quadrupole magnet was designed and fabricated taking into account the radiation damage and heating. The magnet employs two kinds of HTS wires, and the HTS wire is cowound with a stainless steel tape for electrical insulation. The magnet is cooled by circulation of cold helium gas through the cooling channels. Various tests were performed under normal and abnormal operating conditions. The test results show that the HTS quadrupole magnet can operate in the required field gradient stably. The magnet can also be self-protected by metal insulation under the abnormal operating conditions.</P>
임상연구 : 부분마취 환자에서 수술 중과 수술 후의 음악이 수술 후 불안과 긴장 완화에 미치는 영향
김만조 ( Man Jo Kim ),이동준 ( Dong Jun Lee ),한미애 ( Mi Ae Han ),하경호 ( Kyoung Ho Ha ),김문철 ( Moon Chul Kim ),조강희 ( Kang Hee Joh ) 대한마취과학회 2006 Korean Journal of Anesthesiology Vol.50 No.4
Background: Music influences the body and mental well-being of humans. Almost all patients undergoing surgery experience perioperative anxiety. This study was designed to determine the effect of music during surgery and the post-operation period under regional anesthesia on the level of anxiety, relaxation and fatigue. Methods: Sixty-four patients who underwent orthopedic surgery under regional anesthesia were randomly assigned to Group 1 (listening to music) and Group 2 (no music). The premedication and anesthesia were standardized for both groups. The level of anxiety, fatigue and psychological well-being were examined as outcome variables. Results: The level of anxiety and psychological well-being was significantly lower (anxiety:P = 0.012, psychological well-being:P = 0.006) in Group 1 than in Group 2. The level of fatigue was similar in both groups. Conclusions: The results suggested that music might be effective in reducing the level of intra and post-operative anxiety and improving the psychological well-being of patients undergoing surgery under regional anesthesia. (Korean J Anesthesiol 2006; 50: 444~8)
조영 경식도 심초음파에 의한 난원공개존 유병율 및 임상적 의의
이만영(Man Young Lee),전두수(Doo Soo Jeon),전승석(Seung Suk Cheon),이길환(Gil Hwan Lee),강동헌(Dong Heon Gang),김철민(Chul Min Kim),채장성(Jang Seong Chae),박인수(In Soo Park),홍순조(Soon Jo Hong),최규보(Kyu Bo Choi) 대한내과학회 1994 대한내과학회지 Vol.47 No.2
N/A Objectives: Most of patients with patent formen ovale have normal intracardiac pressure and no other abnormality during their life. But because of the high prevalence of clinically latent venous thrombosis, paradoxical embolism through a patent foramen ovale may occur. Although this is a rare complication, the result can be devastating. Previously, contrast transthoracic echocardiography was used to demonstrate patent foramen ovale but the prevalence rate was less than the expected one based on autopsy in general population. These low detection rates have discouraged the use of contrast transthoracic echocardiography to diagnose patent foramen ovale. But transesophageal echocardiography provides larger tomographic field and more clear views around the interatrial septum than transthoracic echocardiography, We tried this study to evaluate the incidence of patent foramen ovale and its role as a possible cause of paradoxical embolism in cerebral infarction patients. Methods: Contrast transesophageal echocardiographic examinations with indocyanine green were performed in 426 patients including 32 patients with cerebral infarction. The prescence of the patent forancen ovale was confirmed by demonstrating echogenic contrast crossing the interatrial septum. Result: 1) Contrast transesophageal echocardiography is a useful technique to evalute right to left shunt, 2) Patent foramen ovale was demonstrated in 73 of 426 patients and 6 of 32 two patients with cerebral infarction showed pakent formen ovale. But patent formen ovale was thought to be a cause of paradoxical embolism only in 3 patients without accompanying cardiovascular disease or risk factors. 3) The prevalence of patent foramen ovale increased progressively with increasing age. 4) There are no serious complications during and after contrast transesophageal echocardiography. Conclussion: Contrast transesophageal echocardiography is a safe, and reliable technique for evaluating interatrial shunt provoked with cough or Valsalva maneuver. This technique should be considered in cerebrovascualr disease patients without known risk factors to evaluate the possible paradoxical embolism.
박만기(Man Ki Park),박정일(Jeong Hill Park),김용철(Yong Chul Kim),한병훈(Byung Hoon Han),한용남(Yong Nam Han),류재하(Jae Ha Ryu),유승조(Seung Jo Yoo),김경호(Kyoung Ho Kim) 한국생약학회 1989 생약학회지 Vol.20 No.2
The alkaloids of thirty five Korean plants which belong to Rhamnaceae, Sterculiaceae, Celastracea, Urticaceae and Rubiaceae were screened. Plant was extracted and solvent fractionated to yield ether soluble alkaloidal fraction and butanol soluble fraction. Each fraction was subjected to alkaloidal test by Dragendorff`s reaction. The result showed eighteen plants strong positive, fourteen weak and six negative to alkaloidal test.
대구,경북지역 요양보호사의 직무소진이 서비스 질에 미치는 영향
김철성 ( Chul Sung Kim ),조만복 ( Man Bok Jo ),김일범 ( Il Bum Kim ) 한국노인의료복지학회 2013 노인의료복지연구 Vol.5 No.1
This research showed that low-educational singles or divorced persons have a high job burnout according to general characteristics. And the worse health a person falls into, the higher job burnout a person gets by the difficulty of job performance. It is necessary to make job burnout low through responsible improvement of labor conditions. The improvement of appropriate job environment is required too because it showed that the long time work makes job burnout high. The systematic support is needed to maintain continuously the service with good quality because it showed that care workers with long-time work experience and good health are skilled in service. Also because it showed that care workers have usually provided the efficient service if the daily work hour is shorter, the long-time work should be avoided. The political support is required to provide the service with good quality through improvement of labor conditions because a person with the higher salary has usually provided the service of higher quality. According to the analysis result about the influence to service quality by job burnout, it was verified that burnout has an influence to the service quality. It showed that especially the lack of personal sense of accomplishment has a great effect to the service. Therefore the consolidation between workers and supporting welfare practice are really required to inspire personal sense of accomplishment of care workers through job condition improvement of facilities and emotionally stable work.
Seok-Jo Hwang,Young-Woong Byeon,Seol-Mae Lee,Jeong-Hwan Kim,Man-Young Choi,Sung-Hyun Kim,Nam-Jeong Kim,Hae-Chul Park,Young-Bo Lee,Sang-beom Lee,Jongwook Lee 한국잠사학회 2010 International Journal of Industrial Entomology Vol.21 No.2
This study was performed to investigate the temperature-dependent development, longevity and oviposition of an indigenous larval parasitoid, Meteorus pulchricornis, on tobacco cutworm, Spodoptera litura. M. pulchricornis were reared at nine constant temperatures between 15 and 35oC. The developmental times of each three developmental stage decreased from 38.7to 16.3 d between 15 and 30oC. However, M. pulchricornis showed longer developmental time at 32.5oC (9.5, 7.7 and 17.2 days for each three developmental stage) than at 30oC (8.9, 7.3 and 16.3 days for each three developmental stage). Immature M. pulchricornis could not develop any more at 35oC. The lower developmental threshold estimated by linear regression equation for the egg to cocoon, cocoon to adult emergence and egg to adult emergence were 5.1, 4.6and 4.5oC. The thermal constant for each of the three stages were 217.2, 176.2 and 403.8 degree-days, respectively. When no food or 50% honey solution as a food source is provided for M. pulchricornis, the parasitoid survived for 8.3 and 55.9 days at 25oC, respectively. M. pulchricornis females laid 5.2 eggs daily and total of 131.6 eggs at 25oC until it died. Peak age-specific fecundity was observed on 14th day (9.6 cocoons) after parasitoid emergence and gradually decreased thereafter.