http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
A case of peritoneal dialysis-associated peritonitis by Rothia mucilaginosa
( Byeong Gwan Kim ),( A Young Cho ),( Sang Sun Kim ),( Seong Hee Lee ),( Hong Shik Shin ),( Hyun Ju Yoon ),( Jeong Gwan Kim ),( In O Sun ),( Kwang Young Lee ) 대한신장학회 2015 Kidney Research and Clinical Practice Vol.34 No.3
Rothia muciliaginosa (R. mucilaginosa) is a facultative, Gram-positive coccus that is considered to be part of the normal flora of the mouth and respiratory tract. There are sporadic reports of the organism causing endocarditis in patients with heart valve abnormalities, as well as meningitis, septicemia, and pneumonia associated with intravenous drug abuse. However, it is an unusual pathogen in cases of peritoneal dialysis (PD)-associated peritonitis. Although R. mucilaginosa is generally susceptible to penicillin, ampicillin, cefotaxime, imipenem, rifampicin, and glycopeptides, there are no guidelines for the treatment of PD-associated peritonitis. Herein, we report a case of PD-associated peritonitis due to R. mucilaginosa that was resolved with intraperitoneal antibiotic treatment.
Comparative study of hard X-ray undulator beamline performance in the Korean 4GSR and the PLS-II
Cho Byeong-Gwan,Kim Yongsam,신승환,Koo Tae-Yeong 한국물리학회 2021 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.78 No.6
A new light source based on the electron storage ring, dubbed the “diffraction-limited storage ring” (DLSR) to keep the full intrinsic wave nature of X-rays had been proposed since the early stage of storage ring history and has finally been developed successfully, and an upgrade and a new construction programs have now chosen in the worldwide synchrotron facilities. The construction of the so-called “4th generation storage ring” (4GSR), which is a newly-coined term aiming in the same direction, was decided in Korea. The Korean 4GSR is expected to be 10–100 times brighter than the Pohang Light Source-II (PLS-II). Hard X-ray undulator beamlines will benefit from the 4GSR due to its low emittance approaching the diffraction limit. In the PLS-II, more than 10 hard X-ray undulator beamlines are currently in operation. We present a comparative study of the representative hard X-ray undulator beamlines by using the cutting-edge diffraction-spectroscopy techniques in the PLS-II and the 4GSR for better understanding the upcoming light source in Korea. The figures-of-merit of the two specific experimental techniques, resonant inelastic X-ray scattering (RIXS) and resonant X-ray emission spectroscopy (RXES), are discussed for comparison of the two light sources. Both RIXS and RXES are sometimes referred to as a “renaissance” in X-ray science and are, therefore, strongly expected to be adopted in the 4GSR beamlines.
김용삼,Cho Byeong-Gwan,Koo Tae-Yeong 한국물리학회 2022 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.81 No.3
The “4th generation storage ring” (4GSR) in Korea is expected to be 10–100 times brighter than Pohang Light Source II, and it gives hard X-ray undulator beamline a great advantage. In PLS-II hard X-ray undulator beamline, the frst crystal of a double crystal monochromator is the frst optics to handle the radiated X-ray power. However, the power and power density due to the smaller X-ray beam sizes and divergences from the Korea-4GSR are too high to handle for the frst crystal itself. We present how to design a hard X-ray undulator beamline to reduce the thermal load on the frst crystal of the monochromator and simulation results of a mirror-mitigated thermal loads on the Korea-4GSR hard X-ray undulator beamline optics
S-421 : Two cases of successfully treated hypernatremia from exogenous salt intake
( A Young Cho ),( Seong Hee Lee ),( Byeong Gwan Kim ),( Sang Sun Kim ),( Hong Shik Shin ),( Kwang Young Lee ),( In O Sun ) 대한내과학회 2013 대한내과학회 추계학술대회 Vol.2013 No.1
Introduction: Hypernatremia is a commonly encountered electrolyte abnormality. Most often, it is attributable to volume depletion; sodium excess is a less common cause. Most reported cases of exogenous hypernatremia have occurred in children. Here, we report two cases of hypernatremia from exogenous salt intake. Case 1: A 77-year-old Korean man visited emergency room for the evaluation of general weakness. His blood pressure was 110/60 mmHg measured in supine position, heart rate 94 beats/min, and respiratory rate 20/min. The initial laboratory data showed blood urea blood urea nitrogen 53 mg/dL; creatinine 1.7 mg/dL; serum sodium 182 mEq/L; glucose 117 mg/dL; potassium 3.8 mEq/L; and plasma osmolality 381 mosm/kg. The patient had a history of self ingestion of table salt for 3 months. Urine sodium and osmolality were 78 mEq/L and 770 mosm/kg, respectively. Under the impression of hypernatremia due to sodium excess, 5% dextrose water was given at a rate of 120 mL/min. The serum sodium level decreased from 182 to 173 mEq/L in the first 24 hour. At the 7th day of admission, the serum sodium and osmolality was decreased to 137 mEq/L and 290 mosm/kg. Case 2: A 58-year-old Korean man visited emergency room for complaining of poor oral intake. He had a history of ischemic stroke with left hemiplegia, and maintained self ingestion of table salt for 2 months. The initial laboratory data showed blood urea blood urea nitrogen 53 mg/dL; creatinine 1.3 mg/dL; serum sodium 190 mEq/L; glucose 220 mg/dL; potassium 2.8 mEq/L; and plasma osmolality 404 mosm/kg. After appropriate hydration, the patient discharged with sodium level of 141 mEq/L at the 8th day of admission. Conclusion: We report two cases of hypernatremia from exogenous salt intake, who were successfully treated with appropriate hydration. Hypernatremia due to exogenous sodium was rare and had high mortality, and appropriate and cautious hydration is very important.
Resonant X-ray Scattering Study of Anisotropic Charge Distribution of Gd Ions in GdB4
Sangyun Hwang,Byeong-Gwan Cho,Tae-Young Koo,Sungdae Ji,Beongki Cho,Ki Bong Lee 한국물리학회 2020 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.76 No.6
Temperature dependence of anisotropic tensor susceptibility (ATS) scattering intensities of GdB4 were measured near L-edges of Gd to investigate how spin ordering affects ATS. ATS scattering intensities for L2- and L3-edges show different temperature dependence below TN. At L3-edge the intensities reflect spin order parameter while intensities at L2-edge do not show noticeable change. The difference is explained in terms of spin-orbit coupling and isotropic distribution of spin-polarized 5d states of Gd ions. Above TN ATS scattering intensities demonstrate that thermal motions enhance charge distribution anisotorpy of Gd 5d states in paramagnetic phase.
조수연 ( Su Yeon Cho ),문현종 ( Hyeon Jong Moon ),김지원 ( Ji Won Kim ),조석기 ( Suk Ki Cho ),김병관 ( Byeong Gwan Kim ),주세경 ( Sae Kyung Joo ),김영훈 ( Young Hoon Kim ),박진선 ( Jin Sun Park ),최원제 ( Won Jae Choi ),김수환 ( S 대한소화기학회 2013 대한소화기학회지 Vol.61 No.2
목적: 저자들은 식도 점막하종양을 수술로 치료한 예를 분석 하고 과거 보고와 비교하여 국내에서의 식도 점막하종양의 특 성을 파악하고 이를 통해 향후 방침을 세우는 데 참고하고자 하였다. 대상 및 방법: 2005년부터 2012년까지 서울특별시보라매병 원과 분당서울대학교병원에서 식도 점막하종양을 진단받고 수술을 시행받은 18예를 후향적으로 분석하였다. 결과: 환자의 평균 연령은 48.9세였고, 남녀 비는 2.6:1였고, 대부분 무증상(77.8%)이었다. 대부분은 중부(55.6%)와 하부 식도(44.4%)에 위치하였고, 크기는 3-5 cm (55.6%)과 3 cm 이하(33.3%)인 경우가 많았다. 내시경초음파에서 병변은 대 부분 네번째 층(83.3%)에 존재하였고, 저에코 (72.2%)로 관찰 된 경우가 많았으며, 고에코 (11.1%) 또는 혼재된 에코(11.1%) 로 관찰된 경우도 있었다. 평활근종으로 진단한 경우가 가장 많았고(55.6%), 수술을 시행한 이유는 악성이 의심되거나 (38.9%) 병변의 크기가 큰 경우(33.3%) 및 크기 증가(11.1%) 등이었다. 수술은 대부분 흉강경을 이용한 적출술(83.3%)을 시행하였고, 병변의 평균 크기는 5.4 cm였으며, 6-10 cm 사 이인 경우(38.9%)가 가장 많았고, 3-5 cm 사이인 경우 (33.3%)가 그 다음으로 많았다. 최종 진단은 평활근종이 대부 분이었고(88.9%), 나머지는 위장관 기질종양(11.1%)이 차지 하였다. 결론: 식도 점막하종양은 평활근종이 가장 흔하였으나, 내시 경초음파로 위장관 기질종양과의 감별이 매우 어려웠다. 악성 이 의심되거나 증상을 동반하는 경우에는 흉강경을 이용한 최 소 침습 수술이 치료에 적절할 것으로 판단된다. Background/Aims: Submucosal tumors of the esophagus are rare lesions among all esophageal neoplasms. The purpose of this study was to evaluate the clinicopathologic features of esophageal submucosal tumors treated by surgical approach. Methods: We analyzed the clinicopathologic and endoscopic ultrasonographic features of 18 esophageal submucosal tumors which were treated by surgical approach at Boramae Medical Center and Seoul National University Bundang Hospital from January 2005 to June 2012. Results: The mean age was 48.9 years old and male to female ratio was 2.6:1. Asymptomatic patients were most common (77.8%). In endoscopic ultrasonographic finding, the majority tumor arouse in the middle (55.6%) and lower (44.4%) esophagus, and appeared as hypoechoic lesion (72.2%) in the 4th layer (83.3%). The most common indication for surgical approach was unclear biological behavior of the tumor. Minimally-invasive technique using thoracoscopy was applied for the enucleation (83.3%). The mean diameter of the tumor was 5.4 cm, and the final diagnosis was leiomyoma (89.9%) and gastrointestinal stromal tumor (11.1%). Conclusions: Leiomyoma was the most common submucosal tumor in esophagus. However, endoscopic ultrasonography was not able to differentiate between leiomyoma and gastrointesinal stromal tumor. For more accurate diagnosis and treatment, minimally-invasive approaches may be suitable for the surgical enucleation of indicated esophageal submucosal tumor.
Sung, Daeho,Jung, Chulho,Cho, Byeong-Gwan,Jo, Wonhyuk,Han, Hee-Sung,Lee, Ki-Suk,Bhat, Vinayak,Farmer, Barry,De Long, L. E.,Lee, Ki Bong,Keavney, D. J.,Lee, Dong Ryeol,Song, Changyong The Royal Society of Chemistry 2018 Nanoscale Vol.10 No.27
<P>Unraveling nanoscale spin structures has long been an important activity addressing various scientific interests, that are also readily adaptable to technological applications. This has invigorated the development of versatile nanoprobes suitable for imaging specimens under native conditions. Here we have demonstrated the resonant coherent diffraction of an artificial quasicrystal magnet with circularly polarized X-rays. The nanoscale magnetic structure was revealed from X-ray speckle patterns by comparing with micromagnetic simulations, as a step toward understanding the intricate relationship between the chemical and spin structures in an aperiodic quasicrystal lattice. Femtosecond X-ray pulses from free electron lasers are expected to immediately extend the current work to nanoscale structure investigations of ultrafast spin dynamics, surpassing the present spatio-temporal resolution.</P>