진동에 의한 혈관 내 폐 보조장치의 산소전달 특성

김기범,권대규,이삼철,김성종,정인수,오인혁,김기주,변윤섭,정경락 한국화학공학회 2004 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.42 No.2

본 연구는 급성호흡부전환자를 치료하기 위하여 사용되고 있는 혈관 내 폐 보조장치의 기체전달을 향상시키기 위하여 중공사막에 진동기법을 사용하여 기체전달을 향상시키고자 시도하였다. 그리고 혈관 내 폐 보조장치를 정맥에 삽입하기 전, 혈관 내 폐 보조장치의 설계조건을 실험적 모델을 통하여 기체전달을 예측할 수 있는 예측식을 만들고자 하였다. 실험결과, 본 연구에서는 진동기법이 기체전달을 향상시키는데 효과적임을 확인할 수 있었다. 뿐만 아니라, 충진율과 가징 주파수의 함수관계를 이용하여 기체전달을 예측 할 수 있었다. 실험에 의하여 얻어진 결과는 예측식에 의하여 얻어진 결과와 유사한 결과를 얻었다. 그러므로 본 연구에서는 충진율과 가진 주파수의 함수를 이용하여 VIVLAD의 기체전달을 예측할 수 있었다. In this paper, we tried to improve gas exchange of the vibrating intravascular lung assist device(VIVLAD) using vibrating method in the hollow fiber membrane, for the patients suffering from acute respiratory distress syndrome(ARDS). And we tried to formularize prediction equations to make a prediction about gas transfer for designing intravenous artificial lung assist device, and designed modules under various conditions were studied through an experimental modeling before inserted the artificial lung assist device into as venous. As a result, we are convinced that vibration method is very useful for the has transfer increasing. Also, we can estimate the gas transfer as a function of the packing density and excited frequencies. The gas transfer obtained from the experiment was similar to that from the prediction equation, confirming the usefulness prediction equation. Therefore, we can estimate the gas transfer of the VIVLAD as a function of the packing density and excited frequencies.

자궁내 태아 사망에 대한 임상적 고찰 (1990-1997)

김희범,서기원 순천향의학연구소;Soonchunhyang Medical Research Institute 2000 Journal of Soonchunhyang Medical Science Vol.6 No.1

Objective : Our purpose of this study was to evaluated the incidence, cause of intrauterine fetal death, termination method and the maternal complications of fetal death clinically. Patients : From January 1990 to December 1997, a retrospective study was made of the hospital records of 188 cases of the intrauterine fetal death among 42,576 deliveries after 20 weeks gestation by gestational age in Soonchunhyang Kumi Hospital. Results : The incidence of the fetal death in utero was 0.44%. The most common gestational week when intrauterine fetal death was detected was 35-40 gestational weeks(35.6%). The parity of mother in the fetal demise in utero was not different between nulliparous and multiparous women. The sex ratio of fetus in intrauterine death was not different between male and female. The cases of the fetal death in utero weighting less than 2500gm were 134 cases(71.2%). The causes of the intrauterine fetal death showed unknown causes(51.6%), maternal diabetes(11.2%), abruptio placenta(8.5%), congenital anomaly(8.0%), pregnancy induced hypertension(5.9%), intrauterine infection(5.3%), cord complication(4.3%), multiple causes(2.7%), vasa previa rupture(1.6%) and oligohydramnios(1.1%). The mode of the pregnancy termination for intrauterine fetal death showed prostaglandin E2(42.0%), oxytocin(34.5%), hysterotomy(11.2%), spontaneous delivery (9.6%), and misoprostol(2.7%). The maternal complication were hemorrhage(4.3%), infection(1.6%), cervical laceration(1.1%), and uterine rupture(0.5%). Conclusion : The cause in about 50% of the intrauterine fetal death could not be determined, so further studies must be made on mother, stillborn infants, placenta and umbilical card in cases where the causes in unknown for the purpose of good outcome and prevention of intrauterine fetal death in next pregnancy. And the studies investigating the safe and effective method for pregnancy termination are needed in order to reduced maternal complication and shortened termination time.

분산 객체 컴퓨팅 환경에서 객체 그룹 구현에 관한 연구

김길준,이주석,송기범,김충원,이준 조선대학교 전자정보통신연구소 2002 電子情報通信硏究所論文誌 Vol.5 No.1

CORBA, which is a standard base of distributed object in distributed computing environment, suggests the method for clearly creating the demand for object defined on OMG and receiving it. Although CORBA appeared as the standard of distributed object and has played an important role in operating distributed object between different computer systems, distributed object computing has such fundamental problem as great demand by many clients an3 Server and the overload of network. CORBA is middle-ware technology to develop one distributed application program by connecting separately-developed distributed object in various platforms which are connected in, open communication network. With expansion of distributed application software scale and complex interface between distributed objects, this study defines object as group in the concept of aggregate in order to control efficiently and to be controlled as group by grouping multi-arranged object and suggests group object model in the side of controller for efficient control of distributed object.

근로관계와 경영권의 법적성질에 관한 연구

金龍華,金範基 호남대학교 2005 호남대학교 학술논문집 Vol.26 No.1

Employment relations are established on the basis of an employment contract in principle, closely related each other and at the same time are legal relations that bind mutually. Furthermore, a management right and unityㆍcollective action right are mutually restricted relations. With the realization of democratization of labor-management relations, the use of the right has been developed into accepting mutual limitation. Although unity action was only activity of citizens' collective expression in the level of civil laws, it could have legal approval of special protective exemption in an aspect of labor laws through an amendment to a principle of civil laws. Its objective is to secure criminal and civil exemption of union activity and to prohibit unifair labor action, which is originally implied in the constitution. Accordingly, interpretation theory that distinguishes unity action from the beginning cannot be accepted. It is because both a strike and unity action by agreement pursue a common goal to realize the value of right to live. Employment relations are formed on the basis of the mutual rightㆍobligation of employer and employee. While employees have the obligation to provide agreed labor in employment relations, an emloyer has a claim to provide labor against employees in principle. Employer's right to use or dispose employees' labor as a company manager for the purpose of business can be acquired by contract with employees. There is no way to dispose such labor in employer's own right free from such contract relations. Employees should obey employer's command and order in the process of providing labor and follow manager's measures to maintain management facilities and order. In the words, employees should provide labor according to employer's right to command labor that is specific indication of a claim to provide labor, and at tne same time observe management order based on employer's right to own management facilities and to control facilities. On the other hand, the concept of a management right is employer's own right. Although a precedent admits it as a legal right, it cannot be admitted as a right based on the positive law. But its scope of execution as a decision making right reserved to an employer also is limited to legal matters. While some deny the existence of a management right on the basis of its fail to prescibe specifically in constitution or laws like the trade union right, others argue that a management right should be admitted as a nature right because an organizational consistency must be maintained with the management of a property right, considering that constitution ensures it as a property right. Manger's right of management is economic power that controls land, labor, wealth, or company production and may be understood as a series of right of property operation that a manger(capitalist) owns means of production, combines them organizationally, and conduct production activity. Moreover, today a capital has been separated from management. Managers should be responsible for company's environment and have the function to fulfill the responsibility as their own right. Some argue that it is managers' exclusive decision matters that do not need to discuss in collective bargaining, which is called a management right. Such a management right is company's own function and governs labor-managemant relations. However, the problem is whether there is manger's management right correspondent to employees' labor right. While the trade union right is expressly stipulated in the text of constitution or labor relations laws, a management employment relations and its relations with a management right, and the legal meaning and nature of a management right, which is very important in the right of the establish modern characteristics of labor-management right and the concept of a management right that meets in reailty.

술후 진통을 위해 투여한 Ketorolac이 혈액응고 기능에 미치는 영향 : 혈전탄성묘사도를 이용한 평가 A Thromboelastographic Evaluation

최인범,고성훈,김동찬,한영진,최훈,민기철 대한마취과학회 2002 Korean Journal of Anesthesiology Vol.43 No.6

Background: Thromboelastography (TEG) has recently become popular for assessment of whole blood coagulation in the operating room. Ketorolac, a potent injectable nonsteroidal anti-inflammatory drug (NSAID), is commonly used for postoperative analgesia. NSAID inhibit plated aggregation in coagulation process. This study was designed to determine whether ketorolac used for postoperative analgesia can affect hemostatic function using a TEG. Methods: Seventy-four female patients, ASA physical status 1 or 2, scheduled for an elective gynecologic surgery were randomly allocated into one of four groups (Group 1: n=10, control without patient-controlled analgesia (PCA); Group 2: n=21, PCA with morphine 60 mg; Group 3: n=20, PCA with morphine 30 mg + ketorolac 90 mg; Group 4: n=23, PCA with ketorolac 180 mg). Blood samples were obtained for TEG analysis preoperatively and 24, 48 and 72 h after surgery. Cumulative drug dosage, visual analog pain scale, satisfaction degree and side effects were measured at 24, 48 and 72 h after surgery. Results: There were no significant differenced in TGE parameters among the four groups at each time. There were no significant differenced in visual analog pain scales and satisfaction degree among the three groups using PCA for postoperative analgesia. Among the three groups using PCA for postoperative analgesia, Group 2 experienced more side effects. Conclusions: Ketorolac does not affect hemostatic function for 3 days after surgery when administrated as a PCA drug. (Korean J Anesthesiol 2002; 43: 755~762)

암면재배 수박의 품종별 당함량 비교

박순기,이범선,최진호,김월수,정순주 전남대학교 농업과학기술연구소 2000 農業科學技術硏究 Vol.35 No.-

The fruit qualities and sugar contents of hydroponically grown watermelon cultivars were investigated in order to obtain informations for nutriculture of watermelon in glass house. The fruit circumference of Mudeungsan watermelon was increased from 30 to 38 days after pollination, and periods of fruit development was longer than that of other cultivars. Total soluble solid content in fruit flesh of watermelon was high in Samboggool, Gwigongja, Dalgona, Gamro, Mudeungsan, Olimpia, Hwangto and Geumro in order. Maltose content was higher in Gwigongja and Mudeungsan watermelon cultivar Sucrose content was higher in Samboggool, Gwigongja and Dalgona watermelon cultivar than that of other watermelon cultivars. Glucose content was much higher in Mudeungsan watermelon cultivar while very lower in Samboggool, Gwigongja and Dalgona watermelon cultivar than that of other watermelon cultivars. Fructose content was higher in Hwangto, Gamro, and Mudeungsan watermelon cultivar while was lower in Gwigongja watermelon cultivar than that of other watermelon cultivars. Maltose, glucose, and fructose content in fruit fresh of watermelon was higher in Mudeungsan watermelon than that of other watermelon cultivars. Contents of maltose, fructose and glucose in fruit flesh of watermelon were higher in Mudeungsan watermelon than those of other cultivars.

지하굴착시 지반의 변위특성연구

심태섭,김기범 조선대학교 국토개발연구소 1995 국토개발연구 Vol.15 No.2

In this thesis, on the basis of actualy measured data with the load cell installed on the anchor head of the rigid retaining wall which is constructed with the anchor-support method and with the inclinometlyer installed at the backside of the rigid retaining wall explain the characteristics of displacement in case of spot excavation by anaiyzing the dispesive aspect of horizontal earth pressure and the horizontal displacement (the former affects the security of soil retetion structure, the latter is the criterion of security proof for the wall) and comparing with the conclusion from the interpretation of elastoplastic method.

용기의 크기가 養液栽培 오이의 生長과 收量에 미치는 影響

鄭淳柱,李範宣,朴順基,金光秀 全南大學校 農業科學技術硏究所 1998 農業科學技術硏究 Vol.33 No.-

본 연구는 perlite를 이용한 오이의 양액재배시 적정 배지량과 근권용적을 구명하고자 용기의 크기가 2, 4, 6, 8 및 10ℓ인 플라스틱 포트에 펄라이트를 채워 오이를 양액재배하였다. 근권용적이 증가할수록 초장, 경경, 엽수 및 엽면적이 증가하였고, 과실수와 과실중량에서는 근권용적이 큰 8ℓ와 10ℓ의 처리구에서 가장 양호하였으며 기형과 발생률도 낮은 경향이었다. 근권용적 6ℓ이상으로 하였을 때 경으로의 건물분배가 줄어들고 엽으로의 건물분배가 많았다. NAR과 CGR은 근권용적이 증가함에 따라 증가하는 경향을 보였다. 근권용적에 관계없이 본 실험 범위내에서는 LAI가 증가할수록 NAR과 CGR도 증가하는 경향을 나타내었다. This experiment was carried out to investigate the effect of container size and substrate volume on the growth and fruit yield of hydroponically grown cucumber(Cucumis sativus L.) plant. Seeds were sown in plug tray filled with coir dust on Feb. 13, 1998. Seedlings with 5 to 6 true leaves were transplanted in 2l, 4l, 6l, 8l and 10l plastic pots filled with perlite medium. Cucumber fruits were harvested with 1 to 2 day interval, and fresh weight, number and malform of fruit were recorded. Plant height, stem diameter, number of leaves and leaf area highly depended on the container size. Total fresh weight and the number of fruit were increased as the container size increased. NAR(net assimilation rate) and CGR(crop growth rate) increased with increasing the container size. Optimum container size for hydroponically grown cucumber plant using perlite medium was recommended as 8l per plant.

양액재배에서 배지종류가 멜론의 생장과 과실품질에 미치는 영향

정순주,박순기,이범선,김월수 全南大學校 農業科學技術硏究所 1998 農業科學技術硏究 Vol.33 No.-

배지종류가 멜론의 생육 및 과실품질에 미치는 영향을 구명하고자 코리아멜론을 이용하여 시설내에서 재배하여 실험한 바 다음과 같은 결과를 얻었다. 토경, 펄라이트경 및 토양격리상에 재배한 경우 생육전반기에는 초장, 엽면적, 각 기관별 생체중 및 건물중 등에서 펄라이트경과 토양격리상이 토경 멜론보다 좋았다. 토양, 왕겨 혼합배지 및 토양·펄라이트·피트모스 혼합배지(360ℓ:180ℓ:60ℓ)에 재배한 경우 생육초기에는 왕겨 혼합배지와 토양·펄라이트·피트모스 혼합배지에서 조사전체 항목에 걸쳐 생육이 양호하였다. 토경, 펄라이트경 및 토양격리상에 재배한 멜론의 과실품질을 보면 과중은 토경보다 처리구가 높았고 당도는 펄라이트경에서 13.3도로 가장 높았다. 산도는 펄라이트경에서 낮게 나타났다. 토양에 왕겨, 펄라이트 및 피트모스를 혼합하여 재배한 멜론의 과실품질를 보면 토양·왕겨 혼합배지에서 당도가 12.4도로 가장 높았고 과중은 토양에 펄라이트와 피트모스를 혼합한 경우가 높았다. The experiment was carried out to investigate the effects of substrates on the growth and fruit quality of the Korea melon (Cucumis melo L. var. reticulatus). Seedlings were grown in soil(not isolated) and polyethylene boxes (10mX50cmX12cm, vol. 600l) filled with perlite, SI (isolated soil culture), RHS [rice hull (200l)+soil (400l)], SP-1 (soil : perlite : peatmoss = 360l : 180l : 60l), SP-2 (soil : perlite : peatmoss = 300l : 225l : 75l), respectively. Plant height, leaf area, fresh and dry weights were higher in perlite culture and isolated soil culture than those of soil culture at the beginning of growth. The vegetative growth of melon in RHS and SP-1 were better than that of soil culture. Soluble solid content and fruit fresh weight were higher in perlite and SI culture than those of soil culture. In the case of mixing substrates, soluble solid content was higher in SP-1 than that of the other substrates. The isolated soil culture of mixing perlite, peat, and soil were recommended as substrate for hydroponically grown melon.

Reality of Kawasaki disease epidemiology

Kim, Gi Beom The Korean Pediatric Society 2019 Clinical and Experimental Pediatrics (CEP) Vol.62 No.8

Epidemiologic studies of Kawasaki disease (KD) have shown a new pattern or change of its occurrence suggestive of its pathophysiology or risk factors from the first patient with KD reported in 1961. The incidence of KD in Northeast Asian countries including Japan, South Korea, China, and Taiwan is 10-30 times higher than that in the United States and Europe. Knowing the true epidemiology of KD in each country and the availability of publications of KD epidemiology also could benefit general health care providers and general population. This would enable the early detection and treatment of KD, ultimately reducing the incidence of coronary artery complications and mortality. Therefore, efforts to investigate the true epidemiology of KD should be continued in every country using a questionnaire survey, National Health Insurance system data, or combined methods depending on each country's medical environment to ensure high-quality care of patients with KD.