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류한승 ( Han Seung Ryu ),최석채 ( Suck Chei Choi ),이준성 ( Joon Seong Lee ) 대한소화기학회 2014 대한소화기학회지 Vol.64 No.1
Belching is a normal physiological function that may occur when ingested air accumulated in the stomach is expelled or when food containing air and gas produced in the gastrointestinal tract is expelled. Excessive belching can cause patients to complain of abdominal discomfort, disturbed daily life activities, decreased quality of life and may be related to various gastrointestinal disorders such as gastroesophageal reflux disease, functional dyspepsia, aerophagia and rumination syndrome. Belching disorders can be classified into aerophagia and unspecified belching disorder according to the Rome III criteria. Since the introduction of multichannel intraluminal impedance monitoring, efforts are being made to elucidate the types and pathogenic mechanisms of belching disorders. Treatment modalities such as behavioral therapy, speech therapy, baclofen, tranquilizers and proton pump inhibitors can be attempted, but further investigations on the effective treatment of belching disorders are warranted. (Korean J Gastroenterol 2014;64:4-9)
초등학교 학생들의 경관선호 분석 -주의회복 이론을 중심으로-
류한승 ( Han Seung Ryu ),남상준 ( Sang Joon Nam ) 한국교원대학교 초등교육연구소 2011 초등교과교육연구 Vol.13 No.-
주의회복 이론(Attention Restoration Theory: ART)은 자연물이 우리에게 주는 심리적인 회복 효과에 대한 이론 중의 하나이다. 생태환경에 대한 관심이 높아지면서 환경설계 분야에서는 인간의 심리와 행태의 연구에 주목하고 있다. 이와 관련하여 본 연구에서는 주의회복 이론을 배경으로 하여 초등학교 학생들의 경관 선호를 분석하였으며, 연구의 결과는 다음과 같이 요약된다. 첫째, 초등학교 학생들이 경관에 대해서 사용하고 있는 학교경관형용사들을 분석하였다. 8경관에 대해 총 896개의 형용사 표현들이 있었으며 152종류로 구분되었다. 둘째, 학생들의 경관에 대한 사고를 유형화하여 분석하였다. 기존 경관 연구에서 제시된 유형들을 중심으로 학생들이 설문에서 기술했던 문장 및 단어를 분류하였다. 셋째, 각 경관별로 회복환경의 4가지 요인을 분석하였다. 이를 통해 주의회복 이론의 가장 중요한 요소인 매혹감이 각 경관에 고르게 나타나 있음을 알 수 있었다. 넷째, 학생들이 촬영한 경관 사진과 실제 장소에서의 매력물과의 선호 방식을 비교하였다. 다섯째, 경관에 대한 분석을 통하여 학교환경설계에 시사점을 도출하였다. The Attention Restoration Theory (ART) is a theory on how natural things give the effect of psychological restoration to people. With increasing interest in ecological environment, researchers in the field of environment design are paying attention to human psychology and behavior. First, we analyzed adjectives that elementary students were using to describe school landscape. For the eight types of landscape, a total of 896 adjectives were used and they were classified into 152 types. Second, we categorized and analyzed the types of students` thinking of landscape. Basal of 8ypes suggested in previous research of landscape, we classified sentences and words that students used in the questionnaire survey. Third, we analyzed the four factors of restorative environment for each 8ype of landscape. Furtherm re, it was found that fascinations, the m st important factor in the attention restoration theory, appeared evenly in each 8ype of landscape. Fourth, we compared students` preference betweef landscape photographs takef by students and fascinations in the actual places. Lastly, the results of landscape analysis can contribute to the design of school environment.
정중선 전두개저수막종에 대한 전두엽하 겸상막후각신경로 접근법
류한승(Han-Seung Ryu),김상덕(Sang-Deok Kim),김주휘(Ju-Hwi Kim),장우열(Woo-Youl Jang),정태영(Tae-Young Jung),문경섭(Kyung-Sub Moon),김인영(In-Young Kim),정신(Shin Jung) 대한두개저학회 2018 대한두개저학회지 Vol.13 No.1
Anterior skull base meningiomas (ASMs) such as planum sphenoidale meningioma (PSM) and olfactory groove meningioma (OGM) may be symmetric around the midline. Bifrontal frontobasal approach and its variations have long been recommended as standard approach to remove these tumors. In the present report, we describe a subfrontal Falco-olfactory approach to treat these ASMs. The subfrontal Falco-olfactory approach was used to treat nine patients with anterior skull base tumor, including six patients who were diagnosed as PSM and three patients with OGM. Subfrontal craniotomy was performed with minimal dissection of temporalis muscle. In all nine cases, ipsilateral olfactory nerve and tumor base could be visualized in the initial stage of the procedure after retraction of frontal lobe carefully. This allowed for olfactory nerve preservation and early tumors devascularization. Between falx and olfactory nerve (above olfactory nerve), we gained excellent visualization of the tumor. After removal of ipsilateral side tumor, incision of the falx, other side tumor could be exposed easily. Preservation of other side olfactory nerve was also done. All patients had no postoperative complications. Thus, subfrontal transfalcial olfactory approach could be considered as a safe and versatile surgical route for ASMs.
상부소화관운동 질환의 최신지견 : 위식도역류질환의 약물치료: 국내에 좋은 치료법 및 최근의 개발약물
류한승 ( Han Seung Ryu ),최석채 ( Suck Chei Choi ) 대한내과학회 2010 대한내과학회지 Vol.78 No.2
The prevalence of gastroesophageal reflux disease (GERD) in Western countries ranges between 10% and 20%. Although GERD is increasing in Korea, it is difficult to actively conduct studies due to restrictions in insurance regulations and there are practical
로마 기준 IV 이해하기: 로마 기준 IV 개정의 배경
류한승 ( Han Seung Ryu ),최석채 ( Suck Chei Choi ) 대한내과학회 2017 대한내과학회지 Vol.92 No.4
Functional gastrointestinal disorders (FGIDs) are common and may be serious. As such disorders are identified principally on the basis of their symptoms, symptom-based classifications assume great importance. The Rome diagnostic criteria for FGIDs are widely used in both research and practice. Over time, the criteria have been revised as new data accumulate; the Rome IV criteria were recently released. The changes from the Rome III criteria principally reflect the data of literature reports and committee rec-ommendations based on all available evidence. Here, we offer a historical perspective and discuss the Rome IV changes. (Korean J Med 2017;92:349-353)
재발성 Clostridium difficile 감염의 위험인자
류한승 ( Han Seung Ryu ),김용성 ( Yong Sung Kim ),서검석 ( Geom Seog Seo ),이유민 ( Yu Min Lee ),최석채 ( Suck Chei Choi ) 대한장연구학회 2012 Intestinal Research Vol.10 No.2
Background/Aims: Clostridium difficile infection (CDI) is a common nosocomial infection associated with substantial morbidity, mortality and increased medical care costs. Although most patients initially respond to therapy, with either metronidazole or vancomycin, about 15-20% of patients experience recurrence. The aim of this study was to analyze the risk factors related to recurrent CDI (RCDI). Methods: We retrospectively reviewed data, from patients diagnosed with CDI during admission at a university hospital between January 2000 and December 2006, for comparison with data from RCDI patients. Results: Among a total of 294 CDI patients, 32 (10.8%) had experienced RCDI. Risk factors for RCDI included anemia, congestive heart failure, respiratory infection, time between admission and CDI diagnosis, duration of antibiotic therapy prior to CDI diagnosis, tube feeding, and gastrointestinal endoscopy. Multivariate analysis revealed that tube feeding was associated with recurrence (odds ratio, 3.65; 95% confidence interval, 1.38-9.65; P=0.009). Conclusions: Patients who received tube feeding were at increased risk of RCDI. Targeting these patients for preventive strategies may contribute to a reduction in the incidence of RCDI. (Intest Res 2012;10:176-182)
지역사회에서의 감염 후 과민성 장증후군 전향적 코호트 연구
류한승 ( Han Seung Ryu ),최석채 ( Suck Chei Choi ) 대한소화기학회 2012 대한소화기학회지 Vol.60 No.1
Incidence and Risk Factors of Irritable Bowel Syndrome in Community Subjects with Culture-proven Bacterial Gastroenteritis (Korean J Gastroenterol 2012;60:13-18)
류한승 ( Han Seung Ryu ),최석채 ( Suck Chei Choi ) 대한내과학회 2015 대한내과학회지 Vol.89 No.6
Microscopic colitis (MC) is a chronic idiopathic inflammatory bowel disease presenting with chronic watery diarrhea. Epidemiologic studies from Western countries have demonstrated that it is almost as common as other classic inflammatory bowel diseases, such as Crohn’s disease and ulcerative colitis. Histological examination can confirm the diagnosis and differentiate between the two main subtypes of MC: collagenous colitis and lymphocytic colitis. The pathophysiology of MC remains unknown; however, possible etiologies include genetic predispositions, autoimmunity, inflammatory responses to luminal factors such as certain drugs or bacteria, and myofibroblast dysregulations. The aim of MC therapy should take into account the severity of symptoms, impact on quality of life, and evidence from clinical trials of available medical treatments. (Korean J Med 2015;89:663-671)