• 농촌의학ㆍ지역보건
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• 제5권1호
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• pp.5-15
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• 1980

The first recorded trypanosomiasis epidemic in Uganda took place at the beginning of this century in the islands and in a strip along the northern shores of Lake Victoria, which resulted in deaths of 1/3 million people. The disease was partly controlled by early 1930's and continued to occur sporadically in certain localized foci. The disease has however flared up in an explosive outbreak in Busoga district along Lake Victoria since 1977. The incidence of disease in northern district adjacent to Southern Sudan is also increasing lately. This paper describes the three month observation on the surveillance and control activities in the epidemic areas and of various health units including the Vector Control Division, the Tsetse fly Control Division, Tororo Trypanosomiasis Research Institute, medical units in Busoga, and Acholi districts. Data analysis and review were made of disease information so far collected by various health units in the Ministry of Health and district health offices. The findings may be summarized in the following: 1) A total of 12, 100 patients and 38 deaths: have occured in Busoga district since 1977 onward, and over 100 cases of diseases arc occuring in the Northern region bordering Southern Sudan. 2) the distribution of trypanosomiasis is characterized with two district patterns. The disease caused by Trypanosoma rhodesiense occurs in Busoga and is transmitted by Glossina palpalis, G. fuscipes infested in the islands and in the northern shore of forests of Lake Victoria. Another type caused by Trypanosoma gambiense occurs in Madi and Acholi in the north and is transmitted by Glossina morsitans in Savannah. 3) The house survey in Rusoga indicated that most of patients keep domestic animals in their house premises, and are engaging in either farming or fishing. Practically all the patients remembered that they had been bitten by tsetse in the field. 4) The routine diagnostic methods in the hospital laboratory is carried out through the microscopic examination of trypanosome with Giemsa stain of blood and cerebro-spinal fluid, The measurement of ESR and IgM has been used by Tororo Tryponosomiasis Research Institute for field screening.

• 한국게임학회 논문지
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• 제10권4호
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• pp.23-34
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• 2010

`e-스포츠'에 대한 국가적인 관심증가는 경제적 효과와 동시에 사회적인 변화를 가져왔다. 또한 전문적으로 게임을 하는 집단인 '프로게이머'를 보유한 한국은 게임종주국으로서의 위상을 가지며 세계적인 관심 속에서 양적, 질적 성장을 거듭하고 있다. 이에 프로게이머를 사회적인 인적자원으로서 분류하고 체계적이고 이론적으로 정립할 필요성이 요구된다. 본 연구는 프로게이머들의 발달과 학습에 관한 이론적 모형을 제시하기 위하여 수행되었다. 모형은 수립은 근거이론 방법에 의한 자료분석에 의거하였다. 총 9명의 프로게이머 자료가 분석되었으며 3명의 전문가(감독, 컨설턴트)에 의해 모형 검증 및 수정의 단계를 거쳤다. 분석된 자료의 결과는 다음과 같다. 첫째, 프로게이머의 발달은 선형적 모형이 아닌 '단계(stage)'로 구분되는 형태를 나타낸다. 둘째, 'Enjoying', 'Struggling', 'Achieving', 'Slumping', 'Recovering'로 명명되어지는 각각의 단계는 학습방법과 동기적 측면, 교육과정, 동료와 상호작용 유형에 있어 고유한 속성을 가진다. 셋째, 기 명명된 5 단계는 유사한 속성에 따라 'Communicative Stage'와 'Practicing Stage'로 분류된다. Communicative Stage의 속성으로서 비구조화된 교육과정, 내재적 동기에 의한 학습형태, 수평적 관계에 의한 상호작용 형태가 나타났으며, Practicing Stage의 속성으로는 구조화된 교육과정, 외재적 동기에 의한 학습, 경쟁적, 수직적인 상호작용 유형이 나타났다. 이러한 결과는 Pedagogy와 Andragogy를 비교한 Knowles(1980)의 이론적 분류를 통하여 선수관리의 방향점을 제안한다. 즉, 게임 전문가 집단으로서 프로게이머의 관리는 첫째, 제시된 모형에 의거 선수들의 상황을 적절하게 분석하는 과정을 필요로 한다. 둘째, 분석된 발달단계에 따른 적합하고 구체적 관리방법이 적용되어야 한다. 셋째, 선수들의 단계이동을 도모하기 위해서는 지엽적 훈련과정보다는 모형에 입각한 총체적이고 체계적인 접근이 필요하다.

• Journal of Advanced Marine Engineering and Technology
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• 제39권5호
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• pp.542-547
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• 2015

Since the oil price has been significantly jumped for several years, a heavy oil of low quality has been mainly used in the diesel engine of the merchant ship. Thus, a combustion chamber of the engine has been often exposed to severely corrosive environment more and more because temperature of the exhaust gas of the combustion chamber has been getting higher and higher with increasing of using the heavy oil of low quality. As a result, wear and corrosion of the engine parts such as exhaust valve, piston crown and cylinder head surrounded with combustion chamber are more serious compared to the other parts of the engine. Therefore, an optimum repair welding for these engine parts is very important to prolong their lifetime in a economical point of view. In this study, Inconel 625 filler metal were welded with GTAW method in the cast steel which would be generally used with piston crown material. And the corrosion properties of weld metal, heat affected and base metal zones were investigated using electrochemical methods such as measurement of corrosion potential, anodic polarization curves, cyclic voltammogram and impedance etc. in 35% $H_2SO_4$ solution. The weld metal and base metal zones exhibited the highest and lowest values of hardness respectively. Furthermore, the corrosion current density of the weld metal zone revealed the lowest value, having the highest value of hardness. The corrosive products with red color and local corrosion like as a pitting corrosion were considerably observed at the base metal zone, while these morphologies were not wholly observed in the weld metal zone. In particular, the polarization characteristics such as impedance, polarization curve and cyclic voltammogran associated with corrosion resistance property were well in good agreement with each other. Consequently, it is suggested that the mechanical and corrosion characteristics of the piston crown can be predominantly improved by repair welding method using the Inconel 625 electrode.

• 한국감성과학회:학술대회논문집
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• 한국감성과학회 2000년도 추계학술대회 논문집
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• pp.98-104
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• 2000

The conventional model did not take momentum conservation into consideration when the electron absorbs and emits the photons. II-ray provides momentum conservations on any directions of the entering photons, and also the electrons have radial momentum conservations and fully elastic bouncing between two atoms, in the new atom model. Conventional atom model must be criticized on the following four points. (1) Natural motions between positive and negative entities are not circular motions but linear going and returning ones, for examples sexual motion, tidal motion, day and night etc. Because the radius of hydrogen atom's electron orbit is the order of 10$^{-11}$ m and the radia of the nucleons in the nucleus are the order of 10$^{-14}$ m and then the converging $\pi$-gamma rays to the nucleus have so great circular momentum, the electron can not have a circular motion. We can say without doubt that any elementary mass particle can have only linear motion, because of the $\pi$-rays'hindrances, nearthenucleus. (2) Potential energy generation was neglected when electron changes its orbit from outer one to inner one. The h v is the kinetic energy of the photo-electron. The total energy difference between orbits comprises kinetic and potential energies. (3) The structure of the space must be taken into consideration because the properties of the electron do not change during the transition from outer orbit to inner one even though it produces photon. (4) Total energy conservation law applies to the energy flow between mind and matter because we daily experiences a interconnection between mind and body. Conventional Concept of Electric Field must be extended in the case of the direct and alternating current. Conventional concept is based on coulomb's force while the electric potential in the direct and alternating current is from Gibb's free energy. And also conventional concept has not any consciousness with human being but the latters has a conscious sensibility. The cell emf is from the kinetic energy of the open $\pi$-rays flow through the conducting wire. The electric potential in alternating current is from that the trans-orbital moving of the induced change of magnetic field in the wire produces flows of open $\pi$-rays, which push the rotating electrons on the orbital and then make the current flow. Human consciousness can induce a resonance with the sensibility of the open $\pi$-rays in the electric measuring equipment. Specially treated acupunctures with Nasucon is for sending an acupunctural effect from one place to another via space by someone's will power.

• 폴리머
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• 제37권1호
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• pp.61-65
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• 2013

본 실험에서는, 양극산화 처리된 탄소섬유의 표면변화가 탄소섬유강화 복합재료의 기계적 계면특성을 통하여 살펴보았다. 양극산화 처리된 탄소섬유의 표면특성은 FTIR, XPS, 그리고 SEM을 통하여 알아보았다. 복합재료의 기계적 계면특성은 층간전단강도(interlarminar shear strength; ILSS)와 임계세기인자(critical stress intensity factor; $K_{IC}$) 그리고 임계변형속도에너지(critical strain energy release rate; $G_{IC}$)를 통하여 고찰하였다. 실험결과 양극산화에 의한 각각의 표면 처리된 탄소섬유는 표면특성의 변화를 가져오며, 복합재료의 ILSS, $K_{IC}$, 그리고 $G_{IC}$같은 기계적 계면특성은 탄소섬유의 양극산화를 통하여 향상되어진다. 전해질이 20% 황산/질산(3/1)일 때 다른 전해질보다 기계적 물성의 가장 큰 향상을 보였다. 이는 양극산화로 탄소섬유와 매트릭스 사이의 계면결합력의 향상때문이라 판단된다.

• 한국치위생학회지
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• 제8권1호
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• pp.119-131
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• 2008

This study was peformed in order to find out the relationship between the causing factors and the production of each gas 01 oral malodor, to contribute the oral malodor control at dental clinic as well as to establish the effective application of malodor control project for public oral health program 127 patients from 20 to 40 years old who had been visited for preventive dental cares were participated for the study. Such items as caries status, periodontal status, salivary flow, viscosity, pH. Snyder test, plaque deposit and tongue plaque were checked through the oral examination in order to find out the contributing factors Hydrogen sulfide, Methyl mercaptan, Di-methyl sulfide and Ammonia gas components were checked with Oral-Chroma and Attain, the oral malodor check units. Not only the corelation coefficiencies but also the multi-way variance analysis were calculated between each causing factor and each component of oral malodor gases to estimate the contributing factors of the oral malodor. 1. There was no relationship between the caries status and each component pf the oral malodor such as sulfur compound or Ammonia, both in laboratory test and VAS test (pF0.05). It revealed negative relationship between Hydrogen sulfide and FT(rM-0.1904. pE0.05) as well as the VAS and FT (rM-0.210. pE0.05). S0, it was estimated that the less oral malador was recognized when caries state changed to filled state in Hydrogen sulfide laboratory test or VAS test 2. High relationship was showed between salivary flow and Hydrogen sulfide (rM-0.183, pM0.039), Methyl mercaptan(rM-0.234, p-0.008). Dimethyl sulfide(rM-0.234, pM0.008) and Ammonia(-0.361. pM0.001) gas(pE0.05). 3. There was a high relationship between M-PHP(Modified-Patient Hygiene Performance Index) and tong plaque all kinds of sulfide(rM0.249. pM0.005). Ammonia gas component(rM0.232, pM0.009). 4. It was found that considerable relationship was appeared between the periodontal status and Ammonia gas (rM0.274, pM0.002), so, it should be needed to control Ammonia. Such dental Cares as the prevention or early treatment of periodontal disease and the accelerating the salivary flow as well as reducing the amounts and activities of filament or spiral typed oral micro-organism were recommended for adults, not only for dental care program at the dental clinics but also for public health programs, in order to promote the oral health and quality of file for individual and community peoples.

• Pediatric Gastroenterology, Hepatology & Nutrition
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• 제12권2호
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• pp.156-162
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• 2009

목 적: HSP 환아들의 상부 위장관 내시경 소견 및 병리 조직학적 소견에 대한 연구는 미미한 실정이다. 이에 저자들은 HSP 환아들의 상부 위장관 내시경 소견과 더불어 병리조직학적 소견 및 임상 양상들을 조사해 보고 그 임상적 유용성에 대해 살펴보고자 하였다. 방 법: 2002년 1월부터 2009년 6월까지 가천의대 길병원 소아청소년과에서 HSP로 진단받은 환아 중 입원하여 상부 위장관 내시경을 시행 받은 경우를 대상으로 의무 기록을 통한 후향적 연구를 시행하여 내시경 소견과 조직 검사 소견을 조사하였고, 내시경 시행 당시의 연령과 성별, 증상, 입원 기간, 재발 유무와 스테로이드 사용 여부, 검사실 검사 소견, H. pylori 감염 여부 등도조사하였다. 또한 내시경 소견 상 십이지장에 병변이 있는 군과 없는 군으로 나누어 검사실 검사 소견, 스테로이드 사용, 재원 일수, 복통의 지속 기간, 재발 유무등에 어떤 차이가 있는지 살펴보고자 하였다. 결 과: 1) HSP 환아에서 내시경을 시행한 경우는 총 51명(14.3%)이었고 연간 평균 시행 건수는 6.4${\pm}$2.8회였다. 상부 위장관 내시경을 가장 많이 시행 받은 연령은 5세였고 계절별로는 봄(3~5월)이 16명(31.4%)으로 시행 수가 가장 많았다. 모든 환아에서 복통이 관찰되었고 그 외의 위장관 증상으로 구토가 15명(29.4%), 혈변 7명(13.7%), 설사 7명(13.7%), 흑변 3명(5.6%) 등도 나타났다. 2) 상부 위장관 내시경 검사는 51예 중 38예(74.5%)에서 십이지장의 병변을 보이고 있었고 이 중 22예 (43.1%)에서 십이지장 궤양이 관찰되었다. 조직 검사를 시행한 37예 중 13예(35.1%)에서 십이지장 조직 소견이 HSP에 부합하는 것으로 판단되었다. 3) 검사실 검사 소견에서는 특이할 만한 점이 없었다. 4) 스테로이드 치료는 십이지장에 병변이 있는 38명중 33명(86.8%)에서, 병변이 없는 13명 중 7명(53.8%)에서 시행되었다(p=0.02). 평균 재원 일수는 십이지장에 병변이 있는 군에서 13.9${\pm}$8.43일, 병변이 없는 군에서 8.1${\pm}$4.62일이었다(p=0.003). 재발과 발병 시 나이, 신장 침범, 스테로이드 사용은 유의한 관계가 없었으나 십이지장 병변이 있는 경우 재발이 유의하게 감소하는 결과를 보였다(p=0.027). 결 론: HSP 환아에서, 상부 위장관 내시경 소견 상십이지장 궤양 등 십이지장의 병변이 높은 비율로 나타났고, 십이지장 병변이 있는 경우 스테로이드 사용과 재원 일수가 증가하였으나 복통의 지속기간이나 검사실 소견에서는 병변이 없는 군과 유의한 차이가 없었고 재발률은 오히려 낮게 나타났다. 십이지장 침범이 HSP의 경과와 예후에 어떠한 영향을 주는지에 관해 지속적인 연구가 필요할 것이다.

• 한국농공학회지
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• 제16권1호
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• pp.3225-3262
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• 1974

The purposes of this thesis are to clarify experimentally the variation of ground water temperature in tube wells during the irrigation period of paddy rice, and the effect of ground water irrigation on the growth, grain yield and yield components of the rice plant, and, furthermore, when and why the plant is most liable to be damaged by ground water, and also to find out the effective ground water irrigation methods. The results obtained in this experiment are as follows; 1. The temperature of ground water in tube wells varies according to the location, year, and the depth of the well. The average temperatures of ground water in a tubewells, 6.3m, 8.0m deep are $14.5^{\circ}C$ and $13.1^{\circ}C$, respercively, during the irrigation period of paddy rice (From the middle of June to the end of September). In the former the temperature rises continuously from $12.3^{\circ}C$ to 16.4$^{\circ}C$ and in the latter from $12.4^{\circ}C$ to $13.8^{\circ}C$ during the same period. These temperatures are approximately the same value as the estimated temperatures. The temperature difference between the ground water and the surface water is approximately $11^{\circ}C$. 2. The results obtained from the analysis of the water quality of the "Seoho" reservoir and that of water from the tube well show that the pH values of the ground water and the surface water are 6.35 and 6.00, respectively, and inorganic components such as N, PO4, Na, Cl, SiO2 and Ca are contained more in the ground water than in the surface water while K, SO4, Fe and Mg are contained less in the ground water. 3. The response of growth, yield and yield components of paddy rice to ground water irrigation are as follows; (l) Using ground water irrigation during the watered rice nursery period(seeding date: 30 April, 1970), the chracteristics of a young rice plant, such as plant height, number of leaves, and number of tillers are inferior to those of young rice plants irrigated with surface water during the same period. (2) In cases where ground water and surface water are supplied separately by the gravity flow method, it is found that ground water irrigation to the rice plant delays the stage at which there is a maximum increase in the number of tillers by 6 days. (3) At the tillering stage of rice plant just after transplanting, the effect of ground water irrigation on the increase in the number of tillers is better, compared with the method of supplying surface water throughout the whole irrigation period. Conversely, the number of tillers is decreased by ground water irrigation at the reproductive stage. Plant height is extremely restrained by ground water irrigation. (4) Heading date is clearly delayed by the ground water irrigation when it is practised during the growth stages or at the reproductive stage only. (5) The heading date of rice plants is slightly delayed by irrigation with the gravity flow method as compared with the standing water method. (6) The response of yield and of yield components of rice to ground water irrigation are as follows: \circled1 When ground water irrigation is practised during the growth stages and the reproductive stage, the culm length of the rice plant is reduced by 11 percent and 8 percent, respectively, when compared with the surface water irrigation used throughout all the growth stages. \circled2 Panicle length is found to be the longest on the test plot in which ground water irrigation is practised at the tillering stage. A similar tendency as that seen in the culm length is observed on other test plots. \circled3 The number of panicles is found to be the least on the plot in which ground water irrigation is practised by the gravity flow method throughout all the growth stages of the rice plant. No significant difference is found between the other plots. \circled4 The number of spikelets per panicle at the various stages of rice growth at which_ surface or ground water is supplied by gravity flow method are as follows; surface water at all growth stages‥‥‥‥‥ 98.5. Ground water at all growth stages‥‥‥‥‥‥62.2 Ground water at the tillering stage‥‥‥‥‥ 82.6. Ground water at the reproductive stage ‥‥‥‥‥ 74.1. \circled5 Ripening percentage is about 70 percent on the test plot in which ground water irrigation is practised during all the growth stages and at the tillering stage only. However, when ground water irrigation is practised, at the reproductive stage, the ripening percentage is reduced to 50 percent. This means that 20 percent reduction in the ripening percentage by using ground water irrigation at the reproductive stage. \circled6 The weight of 1,000 kernels is found to show a similar tendency as in the case of ripening percentage i. e. the ground water irrigation during all the growth stages and at the reproductive stage results in a decreased weight of the 1,000 kernels. \circled7 The yield of brown rice from the various treatments are as follows; Gravity flow; Surface water at all growth stages‥‥‥‥‥‥514kg/10a. Ground water at all growth stages‥‥‥‥‥‥428kg/10a. Ground water at the reproductive stage‥‥‥‥‥‥430kg/10a. Standing water; Surface water at all growh stages‥‥‥‥‥‥556kg/10a. Ground water at all growth stages‥‥‥‥‥‥441kg/10a. Ground water at the reproductive stage‥‥‥‥‥‥450kg/10a. The above figures show that ground water irrigation by the gravity flow and by the standing water method during all the growth stages resulted in an 18 percent and a 21 percent decrease in the yield of brown rice, respectively, when compared with surface water irrigation. Also ground water irrigation by gravity flow and by standing water resulted in respective decreases in yield of 16 percent and 19 percent, compared with the surface irrigation method. 4. Results obtained from the experiments on the improvement of ground water irrigation efficiency to paddy rice are as follows; (1) When the standing water irrigation with surface water is practised, the daily average water temperature in a paddy field is 25.2$^{\circ}C$, but, when the gravity flow method is practised with the same irrigation water, the daily average water temperature is 24.5$^{\circ}C$. This means that the former is 0.7$^{\circ}C$ higher than the latter. On the other hand, when ground water is used, the daily water temperatures in a paddy field are respectively 21.$0^{\circ}C$ and 19.3$^{\circ}C$ by practising standing water and the gravity flow method. It can be seen that the former is approximately 1.$0^{\circ}C$ higher than the latter. (2) When the non-water-logged cultivation is practised, the yield of brown rice is 516.3kg/10a, while the yield of brown rice from ground water irrigation plot throughout the whole irrigation period and surface water irrigation plot are 446.3kg/10a and 556.4kg/10a, respectivelely. This means that there is no significant difference in yields between surface water irrigation practice and non-water-logged cultivation, and also means that non-water-logged cultivation results in a 12.6 percent increase in yield compared with the yield from the ground water irrigation plot. (3) The black and white coloring on the inside surface of the water warming ponds has no substantial effect on the temperature of the water. The average daily water temperatures of the various water warming ponds, having different depths, are expressed as Y=aX+b, while the daily average water temperatures at various depths in a water warming pond are expressed as Y=a(b)x (where Y: the daily average water temperature, a,b: constants depending on the type of water warming pond, X; water depth). As the depth of water warning pond is increased, the diurnal difference of the highest and the lowest water temperature is decreased, and also, the time at which the highest water temperature occurs, is delayed. (4) The degree of warming by using a polyethylene tube, 100m in length and 10cm in diameter, is 4~9$^{\circ}C$. Heat exchange rate of a polyethylene tube is 1.5 times higher than that or a water warming channel. The following equation expresses the water warming mechanism of a polyethylene tube where distance from the tube inlet, time in day and several climatic factors are given: {{{{ theta omega (dwt)= { a}_{0 } (1-e- { x} over { PHI v })+ { 2} atop { SUM from { { n}=1} { { a}_{n } } over { SQRT { 1+ {( n omega PHI) }^{2 } } } } LEFT { sin(n omega t+ { b}_{n }+ { tan}^{-1 }n omega PHI )-e- { x} over { PHI v }sin(n omega LEFT ( t- { x} over {v } RIGHT ) + { b}_{n }+ { tan}^{-1 }n omega PHI ) RIGHT } +e- { x} over { PHI v } theta i}}}}{{{{ { theta }_{$\infty$ }(t)= { { alpha theta }_{a }+ { theta }_{ w'} +(S- { B}_{s } ) { U}_{w } } over { beta } , PHI = { { cpDU}_{ omega } } over {4 beta } }}}} where $\theta$$\omega$; discharged water temperature($^{\circ}C$) $\theta$a; air temperature ($^{\circ}C$) $\theta$$\omega$';ponded water temperature($^{\circ}C$) s ; net solar radiation(ly/min) t ; time(tadian) x; tube length(cm) D; diameter(cm) ao,an,bn;constants determined from $\theta$$\omega$(t) varitation. cp; heat capacity of water(cal/$^{\circ}C$ ㎥) U,Ua; overall heat transfer coefficient(cal/$^{\circ}C$ $\textrm{cm}^2$ min-1) $\omega$;1 velocity of water in a polyethylene tube(cm/min) Bs ; heat exchange rate between water and soil(ly/min)

• 한국식품과학회지
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• 제43권1호
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• pp.39-44
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• 2011

국내에 유통되고 있는 즉석섭취 편의식품에 대한 미생물 모니터링 검사를 실시하고자 식품품목별로 일반세균수, E. coli 정성 및 정량, S. aureus 정량, B. cereus group 정량, L. monocytogenes 정성 및 정량검사를 실시하였다. 즉석섭취 편의식품은 해산물함유, 육류함유, 빵류, 밥류, 샐러드류, 신선편의식품류로 유형을 분류하고 식품군별 미생물 오염도를 비교분석하였다. 일반 세균수에서는 대부분 3-5 log CFU/g의 오염분포를 보였으며, 가장 높은 오염도와 유의적인 차이를 보이면서 가장 높은 평균값(4.4 log CFU/g이상)를 보인 품목은 빵류, 밥류와 신선편의식품이었다. E. coli는 밥류 2건에서 식품기준 및 규격을 초과하였으며, S. aureus은 해산물함유 1건 및 빵류 1건에서 식품공전 기준 및 규격 이상을 초과하여 이들 식품군들의 식품위생관리가 더 요구되는 것으로 나타났다. 본 연구결과를 종합해 보면, 식중독균은 계절에 상관없이 E. coli, S. aureus 및 B. cereus group의 오염도를 꾸준히 보이고 있으며, 즉석섭취 편의식품의 미생물오염 관리는 계절에 상관없이 개인위생 및 환경위생에 지속적인 관리가 필요한 것으로 사료된다. 또한 즉석섭취 편의식품의 미생물적 안전성확보를 위해서는 제조업체의 생산단계부터 사용재료에 대한 정확한 분석, 운반과정에 대한 관리, 제조 및 유통단계에서의 위생관리 등 전반적인 위생관리가 적용되어할 것으로 판단된다.

• Clinical and Experimental Pediatrics
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• 제53권2호
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• pp.167-172
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• 2010

목 적 : ELBWI의 생존률의 괄목할 만한 향상과 더불어 괴사성 장염으로 수술 받는 건수가 증가하고 있다. ELBWI 사망의 중요한 원인인 괴사성 장염으로 수술한 1,000 g 미만 환아의 예후인자에 대해 확인해 보고자 하였다. 방 법 : 2001년부터 2008년까지 삼성서울병원 신생아 집중치료실에서 괴사성 장염으로 수술 받은 1,000 g 미만 환아 35명을 대상으로 개복술 후 생존군(n=28명)과 사망군(n=7명)의 임상적 특성 및 수술관련 인자들을 후향적으로 조사하였다. 결 과 : ELBWI 출생 환아 408명 중 35명(생존군 28명, 사망군 7명)이 괴사성 장염으로 개복술을 받았고 20%의 환아가 사망하였다. 수술 전 SNAP-II 점수($8{\pm}10$점 vs. $20{\pm}17$점; P = 0.022), 흡입산소농도($0.3{\pm}0.1$ vs. $0.7{\pm}0.4L/min$ ; P <0.001)는 생존군에서 사망군에 비해 유의하게 낮았고, 염기과잉은($-3{\pm}7$ vs. $-11{\pm}8$; P =0.004) 사망군에서 유의하게 낮았다. 수술 전과 후의 맥박수, 호흡수, 평균혈압 등 활력지수와 혈액가스 검사상 수소이온농도지수, 이산화탄소 농도, 칼륨은 두 군간 유의한 차이가 없었다. 수술 중 수액 투여량($14{\pm}4$ vs. $11{\pm}4mL/kg/hr$; P =0.045)이 생존군에서 유의하게 높았으나 수술 후 수액 투여량($184{\pm}36$ vs. $266{\pm}173mL/kg/day$; P =0.022)은 사망군에서 유의하게 높았다. 결 론 : 괴사성 장염으로 수술 받은 ELBWI를 대상으로 생존군과 사망군을 비교해보았을 때 양호한 예후인자로 수술 전 안정된 전신상태, 수술 중 충분한 수액의 투여, 그리고 수술 후 안정된 혈역학적 상태가 관련이 있었다.