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황태연,유병철,정귀언,정수진,김성준,배기택,손혜숙,이종태,전진호,엄상화 인제대학교 2001 仁濟醫學 Vol.22 No.1
Objectives: Under the fee-for-service system, Korean hospitals have been suffering from the worsening profitability caused by law medical care fees. To overcome the difficulties, they have maximized the quantity of medical services and made relatively large investment in developing new medical services using high-priced medical equipment, medicines and medical supplies which were not covered by medical insurance system rather than reduced running costs. Materials and Methods: This study was made to analyze and forecast the revenue change of the department of Obstetrics and gynecology of an university hospital in Seoul, expecting the implementation of DRG system in 2000. Results: The results were as follows : 1.During the first two days of hospitalization. 41% of total medical service fee was occurred, which was thought that most of the check-ups and operations were made during this period. After two days of hospitalization, the new occurrence of medical service fee tended to reduce. 2.Out of total medical service fee, 67% of admission fee was occurred after 5 days of hospitalization. This was because medical service fees in obstetrics and gynecology department occurred during the first 5 days of hospitalization. 3.Out of fees for operation, treatment, medical supplies and blood transfusion. 71% was occurred during the first two days. 4. In case of fees for examination, 50% was occurred during the first two days. 5.A total of 53% of fees for medication and injection was occurred during the first 5 days. Conclusions: By the implementation of the DRG system, the income is forecast to increase by 800 won to 310,000 won by the disease group of obstetrics and gynecology department. To increase hospital income with the implementation of DRG system, the results of this study suggest that examinations should be done at out-patient departments before the hospitalization of patient, the discharge of patient should be noticed in advance to reduce the period of hospitalization, and admission appointment system should be implemented for the immediate operation and delivery.
박종빈,김학렬,주현준,유태양,신성남,신정현,송정섭,황기은,김소영,양세훈,정은택 圓光大學校 醫科學硏究所 2008 圓光醫科學 Vol.23 No.2
최근 흡연을 시작한 젊은 성언에서 급성 호산구성 폐렴의 발생에 대한 증례가 보고되고 있다. 급성 호산구성 폐렴은 대개 발열을 동반하기 때문에 초기에는 감염성 폐렴으로 잘못 진단, 치료되는 경우가 많다. 아직 정확한 병태 생리 및 조직학적 소견은 밝혀져 있지 않지만 병력 청취 및 임상 양상, 방사선 소견의 관찰을 통해 급성 호산구성 폐렴을 의심하고, 진단을 위해 기관지 폐포 세척액 검사를 시행한다면 좀 더 쉽게 진단 내릴 수 있을 것이다. 본 저자들은 최근 처음 시작한 흡연에 의해 발생한 급성 호산구성 폐렴을 진단하고, 스테로이드를 투여하여 성공적으로 치료한 환자 2예를 경험하였기에 이를 문헌 고찰과 함께 보고하는 바이다. Acute eosinophilic pneumonia(AEP) is characterized by acute febrile respiratory illness associated with diffuse pulmonary infiltration and pulmonary eosinophilia. The specific etiology for acute eosinophilic pneumonia is elusive. By some investigators, cigarette smoking is suggested as a causative substance which can cause AEP. In recent, the authors experienced two cases of AEP following cigarette smoking. Both cases had characteristic features including age around 20 years, new onset smoking before occurance of AEP, diffuse infiltration on chest radiography, pulmonary eosinophilia based on bronchoalveolar lavage and acute improvement after steroid therapy. These clinical features are resemble with previous smoking induced AEP case reports. Base on these clinical features, cigarette smoking associated AEP could be diagnosed more easily.
Gate-tuned conductance of graphene-ribbon junctions with nanoscale width variations
Yu, Young-Jun,Choe, Jong-Ho,Kim, Jong Yun,Gwon, Oh Hun,Choi, Hong Kyw,Choi, Jin Sik,Kim, Jin Hong,Kim, Jin-Soo,Kim, Jin Tae,Shin, Jun-Hwan,Choi, Young Kyu Royal Society of Chemistry 2019 Nanoscale Vol.11 No.11
<P>To utilize graphene as interconnection electrodes in high-density nanoelectronic structures, the electrical stability of graphene should be guaranteed under nanometer-scale deviations. Graphene-ribbon (GR) junctions with accessible dimensions (<I>i.e.</I>, sub-micrometer widths) are used in diverse interconnection electrode applications and should be characterized properly if they are to be applied in high-density nanoelectronics. Analyzing the effects of nanoscale GR width variations on the conductance of the entire graphene electrode is necessary for their proper characterization. Here, we diagnose the conductance and thermal effect of graphene electrode junctions constructed from GRs of various widths and directions under gate-tuned voltages. On applying partial gate voltages, we identify the effect of local potential variance on the entire graphene electrode junction. As a result, we were able to perceive precise and minute conductance variations for the entire graphene electrode, arising mainly from different sub-micrometer-scale widths of the GRs, which could not be distinguished using conventional global gating methods.</P>
Self-Oscillating, Third-Harmonic Mode-Locked l-GHz Nd:YLF Laser
Yu, Tae-Jun,Sung, Jai-Hee,Nam, Chang-Hee Optical Society of Korea 1999 Current Optics and Photonics Vol.3 No.2
A Nd:YLF laser has been actively mode-locked at the third-order harmonic cavity frequency using a lithium niobate phase modulator. Self-oscillating pulses of 14 ps duration, 1 GHz repetition rate, and 10mV average power at 1053 nm wavelength have been obtained. A 1GHz rf signal to drive a phase modulator was obtained by using 1GHz pulse train without rf synthesizer as a driver of an active mode locker.
증례 : 감염 ; 대장 스텐트 삽입술 후 발생한 Kodamaea ohmeri 진균혈증 1예
유태선 ( Tae Sun Yu ),이준영 ( Jun Yong Lee ),박유미 ( Yu Mi Park ),최희경 ( Hee Kyoung Choi ),김영근 ( Young Keun Kim ),김효열 ( Hyo Youl Kim ) 대한내과학회 2013 대한내과학회지 Vol.85 No.1
저자들은 장점막의 손상을 일으킨 내시경 스텐트 삽입술 후 발생한 Kodamaea ohmeri 진균혈증을 amphotericin B으로 치료 성공한 1예를 경험하였기에 이를 보고하는 바이다. Kodamaea (Pichia) ohmeri is a rare fungal pathogen that has recently been identified as an etiological agent of fungemia in immunocompromised patients. We report a case of K. ohmeri fungemia after colonoscopic stent insertion in a 73-year-old female who was successfully treated with a 2-week course of amphotericin B without stent removal. This is the first case report of K. ohmeri fungemia that developed after colonoscopic stent insertion. (Korean J Med 2013;85:106-109)
( Jin Tae Hwang ),( Dong Hyun Sinn ),( Sung In Yu ),( Ki Jun Jang ),( Ji Young Park ),( Tae Joo Jeon ),( Tae Hoon Oh ),( Won Chang Shin ),( Won Choong Choi ) 대한간학회 2013 춘·추계 학술대회 (KASL) Vol.2013 No.1
Background: The circadian variation in portal pressure in cirrhotic patients and nocturnal occurrence of variceal bleeding has been described, which included an evening dose of non-selective beta blocker (NSBB) for the prevention of variceal bleeding. However, some patients who are taking NSBB presence with variceal bleeding, and time of variceal bleeding in these patients are not known. Methods: A total of 113 patients with variceal bleeding between January 2009 and February 2013 were retrospectively reviewed. After excluding 12 patients in whom time of bleeding couldn`t be assessed, 101 patients (age =56.0±11.5, male=83%, etiology=alcohol 64%) were analyzed. Thirty seven patients (37%) were taking NSBB (NSBB group), and the time of variceal bleeding was compared between NSBB group and patients who were not taking NSBB (non-NSBB group) Results: There was difference in time of variceal bleeding between NSBB group and non-NSBB group (NSBB vs. non-NSBB= 46%, 14%, 24% and 16% vs. 23%, 25%, 20% and 31% for 12:00 AM-6:00 AM, 6:00 AM-12:00 PM, 12:00 PM-6:00 PM and 6:00 PM-12:00 AM, respectively, P=0.058). When analysis was limited for patients who presented with hemetemesis (n=79), significant difference in the time of variceal bleeding was observed (NSBB vs. non-NSBB = 52%, 4%, 24% and 20% vs. 24%, 20%, 20% and 35% for 12:00 AM-6:00 AM, 6:00 AM- 12:00 PM, 12:00 PM-6:00 PM and 6:00 PM-12:00 AM, respectively, P=0.037). The peak time for variceal bleeding for NSBB group was 12:00 AM-6:00 AM while it was 6:00 PM-12:00AM in non-NSBB group. Conclusions: Peak time of variceal bleeding was different for patients taking NSBB than patients not taking NSBB. This observation warrants further validation in order to see whether h.s dosing of NSBB is necessary.
논문 : 광주지역 빗물 저류조 및 초기우수배제장치 용량산정
유태종 ( Tae Jong Yu ),안균환 ( Gyun Hwan An ),최유진 ( Yu Jin Choi ),박상준 ( Sang Jun Park ) 빗물학회 2007 빗물 Vol.1 No.1
Rainwater utilization system is consistes of catchment, conveyance, treatment, storage, and delivery. Catchment methods are divided into roof and ground catchments and are directly influenced on rainwater quality. Generally, rainwater from ground catchment does not have good quality, it can not be used for domestic use. However if it can be used for secondary purpose such as watering livestock or gardening or underground injection. Rainwater from roof catchment has high quality, but the first flush has a some contaminants such as dust and other debris. Therefore it is desirable to separate the first flush of rainwater to be used for domestic water. Storage tank size is determined by intensity and frequency of rainfall, water demand and so on. The bigger the storage tank size becomes the higher the utilization rate and construction cost. In this study, to determine the size of rainwater storage tank and first flush separator, characteristics of rainwater such as intensity, frequency, water demand and rainwater quality around Gwangju area were analysed. From the analysis of rainfall characteristics and water demand pattern, the optimum size of rainwater storage tank was 2.0 m3 per 100 m2 of roof catchment area. And, according to water quality analysis of rainwater harvested from roof, the amount of first precipitation to be removed was 1.32 mm.