삼천포 화력발전소 연안의 플랑크톤상을 중심으로한 해양 환경

金世華,李晉煥,洪旭熹 龍仁大學校 1993 용인대학교 논문집 Vol.9 No.-

Impacts of the power plant operation located in the coastal area of Samchonpo were investgated in the view point of the population dynamics of zoo -and phytoplankton five times seasonally during the period from August 7 1990 to August 27 1991. Ninty nine taxa of phytoplankton, representing 2 forma, 1 variety, 79 species and 17 unidentified species belonging to 39 genera were tentatively identified. Phytoplankton standing crops varied with months and stations ranging from 5.8×104cells /l (November 1990, station 5) to 4.83×106cells /l (May 1991, station 4) in surface, ranging from 2.9×105cells /l (Novemver 1990, station 5) to 5.90×106cells /l (May 1991, station 4) in bottom. Dominant species through the present study were Chaetoceros compressus and C. curvisetus in August 1990, Nitzschia pungens in November, Eucampia zodiacus and Skeletonema costatum in February 1991, Leptocylindrus danicus in May, and S. costatum and S. tropicum in August. Causative organisms of red -tide due to diatoms were 24 taxa. Among them, six species occurred throughout the year ; Chaetoceros debilis, Cylindrotheca closterium, Guinardia flaccida, Nitzschia pungens, Rhizosolenia setigera and Skeletonema costatum. Chlorophyll -α was fluctuated ranging from 6.18mg /m3 (August 1990, station 1) to 23. 77mg /m3(February 1991, station 4) in surface, This value of chlorophyll -a might be assumed that eutrophication occurred in studied waters. Twenty two taxa of zooplankton communities, representing 14 copepods, 4 cladocerans, 2 chaetognaths, 1 protozoan and 1 appendicularian were identified. Zooplankton abundance varied with months and stations ranging from 1,677 indiv./m3 to 18,057 indiv./m3.

일본 전통문양의 특징에 관한 연구

김세나,오경화 한국의류산업학회 2003 한국의류산업학회지 Vol.5 No.5

The traditional culture has been developed for a long time with an unique property according to folk character, custom and environment within an area. Especially in 1906, when the westerners were interested in oriental cultures more and more, Paul Poiret presented Japanese traditional dress of napping sleeve coats and harem pants, henceforth japanese fashion theme began to rise. The Japanese style rose as an important fashion item of the modern fashion, with various fashion themes such as orientalism, ethnic, folklore, ecology, etc., needless to say of activities of Japanese designers. The revealed patterns on Japanese dress and it's ornament plays a role of expressive decoration as well as stand for the nation, the ideology of the age and aesthetic consciousness. For this reason, it is necessary to study Japanese traditional patterns expressed in modern fashion systematically. Therefore, in this research, the demonstrated Japanese traditional patterns on the modern fashion were divided into natural, artificial and complex design and were looked out the characteristic, furthermore it was studied in regard that Japanese patterns were how to apply in modern fashion. It was concluded that the characteristics of the Japanese traditional patterns presented in the modern fashion were as follows: first, creation of environmental friendly design using plenty of natural materials; second, expression of paint-like impression and beauty of margins by simplifying of patterns; third, expression of amusing design by using bright colors and print; finally, various patterns were spreaded out complicated on dress. The characteristics of Japanese traditional patterns in the above were expressed in the modern fashion.

영광군 홍농읍 주변 해역의 동물플랑크톤 분포

金世華,姜演植,嚴熙文,林東賢 龍仁大學校 1995 용인대학교 논문집 Vol.11 No.-

Studies on the seasonal distribution of zooplankton were carried out in 1994 in waters off Yongkwang Atomic Power Plant. Zooplankton samples were collected four times seasonally at six selected stations. Forty - three taxa of zooplankton were distributed and 25 species representing 21 copepods, 2 chaetognaths, 1 protozoan and appendicularian were identified to species level. Zooplankton abundance varied between 840-42, 014 indiv. m-3 and were recorded the highest abundance in September and the lowest in February. Seasonal succession in the dominant species was observed from winter and spring with Acartia omorii to summer and autumn with A. pacifica and Paracalanus indicus. With the prevalence of ueritic copepods all the year round, i.e., A. omorii, A. pacifica and P. indicus, the studied waters were revealed to have the typical zooplankton fauna in coastal waters of the Yellow Sea.

한강 하류역 동물플랑크톤의 군집동태

김세화,박현기 용인대학교 자연과학연구소 2011 自然科學硏究所論文誌 Vol.16 No.1

Zooplankton samples were collected at ten stations in lower part of Han river during the period between June and September 2011. A total of 23 taxa occurred, which consisted of six species of cladocerans, four taxa of copepods, 11 species of rotifers, one species of nematod and a aquatic insect, respectively. Abundance was fluctuated between 1,700∼14,530 individuals/m3. Maximum abundance was recorded at Janghang wet land in June and drastically decreased in July possibly due to heavy rain fall in the summer. Higher abundances were observed at upper stations again in September. Dominant species were Bosmina longirostris, copepodites and Brachionus calyciflorus. Only an occurrence of carnivorous cladoceran of Lepodora kindtii at Janghang wet land seemed to indicate the well conservation of the wet land in lower Han river.

한강하류체 동물플랑크톤의 계절 분포

김세화 龍仁大學校 1997 용인대학교 논문집 Vol.13 No.-

Six times of field study on seasonal distribution of zooplankton community during the period from June 1995 to June 1996 in lower Han-river revealed that a total of 69 taxa of zooplankton distributed in the study water. Rorifers showed prosperity in species number with the followence of cladoceran and copepods. zooplankton dynamics in the study water maintained high secondary production in the spring. Extremely low abundance was observed with a few number of species in the winter. The occurrence of some rotifers of Brachionus caluciflorus and Asplanha priodonta indicates the study water being as eutrophic condition. No indicator species of cladocerans and copepods, however, occurred.

서산 화력발전소 온배수 영향에 따른 동물플랑크톤상의 변화에 관한 연구

金世華 龍仁大學校 1994 용인대학교 논문집 Vol.10 No.-

Impacts of thermal discharges on zooplankton dynamics were studied during the period between March and October, 1993 at five selected stations in waters adjacent to Seosan Power Plant. Nineteen taxa of zooplankton communities, representing 14 copepods, 4 cladocerans, 1 protozoan, 1 chaetognath and 1 appendicularian were identified. Three species of copepods, Paracalnus indicus, Acartia bifilosa, A. omorii, and Noctiluca scintillans, Sagitta crassa and Oikopluera dioika appeared all the year round. Zooplankton abundances varied between 530-14,388 indiv./m3 and were recored the highest value in June and lowest in August. According to the dominance of small -sized inlet water copepods, the seasonal occurrence of cladocerans and high abundance of N. scintillans in summer, the studied waters showed to be one of typical waters in neritic zones of the Yellow Sea.

PEG를 주쇄에 포함하는 알키드 레진의 미립자들의 분산효과에 관한연구

정세화,김병구,김창배,공명선 단국대학교 신소재기술연구소 1993 신소재 Vol.3 No.-

Alkyd resin의 분산제로서의 응용성을 알아보기 위하여 여러 가지 분자량의 PEG와 phthalic anhydride로부터 합성된 diacid와 stearic acid와 1,1,1-trimethylolethane으로부터 합성된 diol과의 축합중합에의하여 여러 가지조성의 alkyd resin을 합성하였으며 이들을 trichloroethane(TCE)용매 중에서 분산시 투광도, 시간별 침강속도 및 합성한 alkyd resin의 HLB값 등을 측정하였다. 실험결과 본 alkyd resin은 수지중에 친수성 부분과 소수성 부분을 가지고 있어 비교적 극성인 미립자들이 비극성 용매중에서 고르게 분산되었으며 PEG 1,000을 사용하여 합성한 alkyd resin(HLB값은 10.19)와 TCE용매 중에서 미립자들의 분산성이 가장 우수하였다. 또한 PEG분자량 증가와 함께 친수성 부분이 증가되어 분산성이 떨어짐을 알 수 있었다. Alkyd resins were prepared from phthalic anhydride, polyethylene glycol, stearic acid and 1,1,1-trimethylolethane. These product have both hydrophilic and lipophilic part. Dispersion tests were carried out spectrophotometrically in 1,1,1-trichloroethane using particles. Particles dispersion with alkyd resin showed that it was maximum when molecular weights of hydrophilic and lipophilic part were close to one. This happened when alkyd resin was prepared from PEG 1,000. This result was turned out to agree well with HLB value 10∼11.

뇌경색후 발생한 Cortical Spreading Depression과 뇌경색 범위에 관한 실험적 연구

박윤관,이승민,김세훈,이기찬,주정화,이훈갑 대한신경외과학회 1996 Journal of Korean neurosurgical society Vol.25 No.3

Cortical Spreading Depression(CSD) is a transient depression of neuronal activity that spreads across the cortical surface and is associated with profound changes in blood flow, extracellular ion concentration. Direct Current(DC) potentials and cell membrane potentials. One of the electrophysiological disturbance in the periinfarct surrounding is spontaneous occurrence of repeated CSD like DC shifts associated with increased energy demand. Due to restricted blood flow to the periinfarct border zone, elevated metabolic demand is potentially harzardous. So the authors designed this experiment to verify the correlation between periinfarct cortical spreading depression and ischemic volume following permanent middle cerebral artery (MCA) occlusion in rats. Sprague-Dawley rats(n=27) were anesthetized with 0.5∼1% halothane, and artificially ventilated through a tracheal cannula. Arterial pressure, blood gases and body temperature were controlled. The middle cerebral artery(MCA) was occluded distally to the lenticulostriate branches. Measurements of CSD activity were made for 4 hours in each animal. Infarct volume was determined 6 hours later in 2, 3, 5-triphenyl tetrazolium chloride(TTC)-stained sections. For 4 hours after MCA occlusion, the CSDs were found in all experimental animals with a range of 2∼9 times. Those CSDs wer of varying duration, : "small"(<1 min) and "big"(> 1 min) SDs and mean of total duration of SD was 10.5±10.3 min during 4 hours of MCA occlusion. Neuropathological evaluation of brain infarct in the rats, which had been allowed to survive for 6 hours after MCA occlusion showed a mean volume of 89.7±45.3㎣. Serial observation of duration of CSD showed progressive prolongation only in 8 rats. The rest of them(n=19) did not show any prolongation. Neither the prolongation of duration of CSD nor the frequency of CSD in the penumbral zone correlated with the volume of infarct. However total duration of CSD was slightly related with the infarct volume after 6 hours of the permanent MCA occlusion(r=0.414, p=0.0318).

추간공 경유 경막외 차단술 환자의 합병증에 대한 조사 연구

최선주,배성열,서성화,김상대,김세훈,박정율 대한척추신경외과학회 2004 Neurospine Vol.1 No.1

Objective: To study on the incidence of complications from C-arm guided lumbar transforarninal epidural injections in patients with radiculopathy caused by either lumbar spinal stenosis or herniated intervertebral disc. Materials & Methods: A total of 1200 patients with back/leg pain for more 3 months and received therapeutic injections in recent 1-year period was evaluated. All procedures were performed by one neurosurgeon with careful monitoring by nursing staffs during and after the procedures. Two party observers reviewed medical charts including immediate postprocedure complications using standardized questionnaire. Results: Average 1.9 injections per patient were done. Complications per injection seen included 12 transient headaches (0.9%), 5 increased back pain(0.4%), 4 increased leg pain(0.3%), 4 facial flushing(0.3%), 2 increased blood sugar in an insulin-dependent diabetic(0.2%), I vasovagal reaction(0.08%), and I hypertension(0.08%). All of these complications resolved within several hours to 2 weeks and there were no need for further specific management. There were no major or permanent complications. The incidence of minor complications was 2.3% per injection. All reactions resolved without morbidity. Conclusion: Although effectiveness varies with different pathologies, the C-arm guided lumbar transforaminal epidural injection seems to be a safe and effective procedure for these patients when carefully performed and closely observed with appropriate nursing care.

Effect of an Extracellular Fluid Type Solution of Lung Preservation of an isolated Rabbit Heart-Lung Block Model

Kim, Se Wha,Sim, Sung Bo CATHOLIC MEDICAL CENTER 1996 Bulletin of the Clinical Research Institute Vol.21 No.1

Lung transplantation has been employed successfully for the treatment of end stage pulmonary vascular and parenchymal diseases. Limited donor supply is the major factor restricting the application of lung transplantation. A uniformly reliable method of lung preservation would improve donor organ availability. Recently, Euro-Collins'(Euro-C) solution, an intracellular fluid type solution, is most widely used in organ preservation. In present study, we used an in vitro-ventillated, blood perfused rabbit lung model to examine the effects of extracellular fluid type solution (Low-Potassium-Dextran-Glucose; LPD) over intracellular fluid type solution(modified Euro-Collins' solution; Euro-C) during pulmonary flush and preservation period. For this study, animals were divided into three groups : control group(n=6), nonpreserverved lungs; LPD group(n=24), lungs were flushed with LPD solution and stored(10℃) in the same solution for 6 hours(n=6), 12 hours(n=6), 18 hours(n=6), and 24 hours(n=6); Euro-C group(n=24), lungs were flushed and stored with modified Euro-Collins solution for same period of LPD group. Rabbit lungs were harvested and stored after pulmonary flush with same solutions. The lungs were preserved at 10� and reperfused with flesh venous blood. On completion of each storage period(6, 12, 18 and 24 hours), the lung was ventilated and reperfused with rabbit venous blood at a rate of 30ml/min for 10 minutes. Assessment of lung functions included pulmonary vascular resistance during pulmonary flush, gas analysis of effuent blood, pulmonary artery pressure during reperfusion and wet/dry weight ratio after reperfusion. The results are as follows: 1. The lungs flushed with Euro-Collins solution showed a marked rise in pulmonary artery pressure(PAP) and pulmonary vascular resistance(PVR). By contrast, when the lungs were flushed with LPD, no rise in PAP and PVR were observed. 2. Oxygen tension (PO_2) of left atrial effluent during reperfusion was significantly higher in LPD-24 group and control group than Euro-C-12 group(P<0.05) and Euro-C-24 group(P<0.01). Carbon dioxide tension (PC02) during reperfusion was significantly higher in Euro-C-18 group than with control group and LPD-24 group (P<0.05). 3. PAP during reperfusion was significantly higher in Euro-6 group than in control group (P<0.05). 4. Wet/dry lung weight ratio after reperfusion was higher in Euro-12 group than that in control roup(P<0.01) and LPD-24 group(P<0.01). Lungs in LPD group showed better lung function(higher, P0_2 and lower, PCO_2) and lower wet/dry weight ratio than those of Euro-C group. It is concluded that superior results in lung preservation can be achieved with pulmonary flush using extracellular fluid type solution(LPD solution) when compared with intracellular fluid type solution(modified Euro-Collins' sollution).