Removal of Cochlodinium polykrikoides using a novel material produced from sediment - A field study

Young一Chae Song,S. Sivakumar,Sung-Chung Ko,Eung-Ju Hwang,Qtae Jo 한국항해항만학회 2007 한국항해항만학회 학술대회논문집 Vol.2 No.추계

The present study was conducted in three fields at Namhae to examine the removal efficiency of organic free, heavy metal immobilized sediment on Cochlodinium polykrikoidesand on sea water quality. The present study results concluded that removal efficiency was depends on the initial number of red tide cells. There was no drastic change in the sea water quality after sediment spray. For the comparison of effectiveness of betonite, zeolite and lime were mixed with sediment did not show any marked difference in removal. Finally, the present study evaluated 5Og/m² sediment is Sufficient to remove 100% cells density, even though various environmental factors are interfering the mechanism.

포항항 항로지정을 위한 주요 통항로 및 통항 특성에 관한 연구

송재욱(Chae-Uk Song),이윤석(Yun-Sok Lee),박영수(Young-Soo Park),강정구(Jeong-Gu Kang),정민(Min Jung),정창현(Chang-Hyun Jung) 한국항해항만학회 2005 한국항해항만학회지 Vol.29 No.10

2006년 영일만 신항이 개장될 경우 포항항 진입 수역은 선박 통항량이 증가하고 중대형 선박들의 입출항이 가속화될 것이다. 그러나 포항항 일부 진입 수역에는 여전히 항행 위험 요소가 존재하고 있다. 즉, 호미곶 인근 해역에서의 무질서한 항행 및 교통이 폭주하고 있어 통항 안전성을 고찰하기 위하여 해상교통조사를 실시하였다. 또한 해상교통조사 결과를 선종별 및 톤수별로 통계 처리하고 통항 선박의 항적 분포 등을 토대로 통항 선박의 주요 통항로 및 통항 특성을 분석하였으며, 향후 포항항 진입 수역의 항로지정에 활용하고자 한다. The traffic volume will be increased and the traffic of larger vessel could be multiplied in the Pohang port by the opening of the Young-il new port in 2006. Unfortunately, however, potential danger, factors to the safe navigation, disordered navigation and traffic congestion are still existing in the Pohang port approaching waters. This paper describes the status of marine traffic flow and navigational characteristics based on the marine traffic survey using the exclusive software, and the results of marine traffic survey classify into ship’s type, size and track history of passing ships through the statistical methods. Finally the examinations of marine traffic route, traffic flow and navigational characteristics are discussed. These results can be used for the best design of ship’s routing at the Pohang waters.

도축돈 장분변으로부터 Shiga Toxin-Producing Escherichia coli의 분리와 성상

송영환,김지영,채미경,박창식,김명철,전무형 충남대학교 형질전환복제돼지연구센터 2007 논문집 Vol. No.10

Shiga toxin-producing Escherichia coli (STEC) causes various clinical signs in human and animals, and has been indicated as a global enteropathogen with zoonotic importance. In this study, the feces of healthy pigs were collected from the slaughtered pigs of Daejon abattoir during the period from December 2001 to October 2002. Of 326 specimens, 13 STEC were confirmed by culture, PCR and colony hybridization. The isolates were further studied for toxin types, pathogenic factors, plasmid profiles, and antimicrobial resistance to characterize the genetic and toxigenic properties. In PCR, all of 13 isolates were evident to have shiga toxin gene (stx). Of 13 isolates stx1 gene was detected in 4 and stx2 gene in 9. The genes of eaeA, hlyA and rfbE were not present in any isolates. In colony hybridization using shiga toxin common primer (STXc), 2 to 9 per 100 colonies subcultured from 13 isolates showed the positive reaction. In the examination for plasmid profiles of the isolates, one to eleven plasmids with varying sizes of 1.0 Kb to 100 Kb were detected, and the 13 STEC could be classified into four groups by the plasmid patterns. The antimicrobial resistance patterns of the isolates were comparably corresponded with the plasmid profile patterns.

한국인 정상교합자의 3차원 디지털 모형을 이용한 순,협측 치면 곡률

채지현,송진욱,차정열,최정수,박영철 대한치과교정학회 2008 대한치과교정학회지 Vol.38 No.2

본 연구는 한국인의 치아형태에 적합한 브라켓 베이스를 만들기 위해 임상 치관의 순, 협측 곡률을 3차원적으로 계측하여 치관의 곡률 자료를 얻고자 하였다. 정상적인 해부학적 형태를 가지는 구강모형 30쌍을 3차원 디지털 모델로 제작한 후, FA점을 기준으로 수평 기준면과 수직 기준면을 설정하였다. 이 기준면에 대한 치면의 곡선을 형성한 후, 곡률을 이차방정식의 계수로 표현하였다. 수평면과 수직면의 곡률과 FA점을 기준으로 근심과 원심, 치은측과 교합면측의 곡률을 측정한 결과, 상악견치와 상악 제2소구치 외에는 남녀간 치면 곡률의 유의한 차이가 없었다. 하악 측절치, 상악 견치, 상하악 제1, 2소구치와 제1대구치에서 근원심 또는 치은교합면측 치면 곡률의 유의한 차이가 관찰되었다 (P < 0.05). 본 연구에서 얻어진 순, 협측 치면의 곡률 자료는 한국인의 치아 형태에 적합한 Straight Wire Appliance 개발의 기초 자료로 활용될 수 있다. Objective: This study was performed to investigate the labio/buccal clinical crown curvatures of Korean permanent teeth and to obtain the curve-ratio data in an attempt to fabricate bracket bases fit for each individual Korean permanent tooth. Methods: Three-dimensional digital models were made from 30 sets of dental casts with normal anatomic structures. According to the FA points, horizontal and vertical reference planes were established and lines were drawn on the tooth surfaces in reference to these planes. The curvature was expressed as the coefficient of a quadratic equation. Lines mesial, distal, gingival and occlusal to the horizontal, vertical reference planes and the FA point were drawn. Results: The curvature measured for each line revealed that there are no significant differences between male and female, except for maxillary canines and maxillary second bicuspids (P > 0.05). There were notable differences in the mesio-distal or gingivo-occlusal curvatures among the mandibular lateral incisors, maxillary canines, maxillary and mandibular first and second bicuspids and first molars (P < 0.05). Conclusions: The labial & buccal crown curvatures of teeth in Korean normal occlusion were measured on the mesial and distal, gingival and occlusal sides respectively in this study. Based on these data, a SWA can be developed to fit the individual features of Korean tooth crowns.

채소류에 살포된 유기인제 농약 잔류성분의 경시적 변화

송낙수,조영채 忠南大學校 環境問題硏究所 1999 環境硏究 Vol.17 No.-

In order to investigated the changes of the time dependence in vegetable for organophosphorous pesticide, fenitrothion and chlorpyrifos were sprayed on the lettuce, perilla leaves, pepper and cherry tomato cultivated in vinyl house andopen-field, respectively. The safe use guideline at the pesticide application was obeyed. After fenitrothion and chlorpyrifos were sprayed, residual components of pesticides were analyzed by gas chromatography according to the change of time dependence, that is, 3hrs, 3, 7, 14, 21 and 28 days. The obtained results were summarized as follows. Residual components of pesticides of leaf vegetable, such as lettuces and perilla leaves were rapidly decreased with time sequence than that of fruit vegetable, such as red pepper and cherry tomato. Residual components of pesticides were rapidly decreased with vegetables cultivated in open-field than that of vinyl house. The concentration of fenitrothion and chlorpyrifos were sprayed in vinyl house and open-field were significantly decreased according to the time lapse(p<0.001). Decomposition rate of residual pesticide was more rapidly decreased at within 7 days but it was slowly decreased the day after 2∼4 weeks. Above results indicate the safe use guideline at pesticide application must be obeyed and cleaning was surely needed.

상사화속 식물 화색의 분류 및 특성

송채은,박윤점,김근영,허북구 한국화훼연구회 2001 화훼연구 Vol.9 No.2

Color characteristics and classification of 14 species of Lyroris were studied. Three species of red, four species of reddish orange, one species of orange, and one species of reddish purple were classified. Eleven species among fourteen species tested had 530 nm of λvismax, and three species had 513 nm of λvismax. Spectroscopic method were employed to measure the contents of total flavonoid and anthocyanin in Lycoris species. L. squamigera and L. jacksoniana had 1.61 g/100g.FW, of total flavonoid, which was the highest content among fourteen samples tested. L. radiata had 9.09mg/100 g.FW, of total anthocyanin, and followed L. sap. D, 7.68 mg/100 g.FW,, L. radiata var. pumila, 6.87 mg/100 g.FW., L.satuma $quot;Hiryu$quot;, 6.81 mg/100g.FW,.

Neuroleptic Malignant Syndrome에 합병되어 나타난 급성 신부전증 1예

채영래,백인호,송정중 大韓神經精神醫學會 1990 신경정신의학 Vol.29 No.4

Neuroleptic malignant syndrome(NMS) is an uncommon but fatal idiosyncratic reaction to neuroleptics. It comprises fever, muscular rigidity, altered consciousness and autonomic dysfunction. The most common serious complications of NMS is rhabdomyolysis, which produces acute myoglobinuric renal failure. The authors experienced a schizophrenic male patient with acute renal failure as a sequela of NMS. The patient was 27-year-old man who had received haloperidol for 9 years. Emergency hemodialysis, hydration and diuretics promoted recovery of impaired renal function. The patient survived the acute episode of NMS without any sequela and resumed his treatment with neuroleptics.

무용수의 심상 자극 동안 두뇌 영역별 뇌파 활성도 변화

송채훈,정혜선,심준영 한국스포츠리서치 2005 한국 스포츠 리서치 Vol.16 No.2

This study is to examine electroencephalogram (EEG) activity by regions of brain during imagery stimulation with 33 women who majored in dance and has a 10-year dance career and 33 general women university students. EEG was measured at stability state before imagery stimulation as the first measurement and during imagery stimulation as the second one for five minutes respectively. Relative powers at 8 EEG channels including FP1, FP2, F3, F4, C3, C4, P3 and PI by frequency bands. As a result of analysis, 8 channels of theta waves including FP1, FP2, F3, F4, C3, C4, P3 and P4 showed significant difference between groups. In particular, In the mean value of 8 channels by groups, dancer group showed a larger increase of theta wave than general group during imagery stimulation. Also in relative activity of left and right brain of theta wave. danger group showed a dominant activity at right brain. F4, C4 and P4 compared to general group. These results suggested that in dancers' imagery. EEG kept efficient stability state and their ability to give attention to internal experience was also excellent.

댄스스포츠 참여가 가족응집력 및 결혼만족에 미치는 영향

송채훈,박현서,박상규,정진영 朝鮮大學校 스포츠科學硏究所 2006 스포츠科學硏究 Vol.17 No.-

Couples are happy everybody and desire that their married life is successful beginning married life, but conjugal love itself does not become sufficient condition of happy double harness. In different environment each character have and is thought in life bow as well as way that love grown-up man and woman and feel and because difference exists that act. This research drew specimen using Stratified Cluster Random Sampling after establish population to woman who get married between gwangju Chollanamdo area's dance sports program newcomers February, 2006. form the analysis of the date the following conclusion were abtaind abtaind : First, among low rank factor of family cohesive power according to incidental and age that analyze family cohesive power and marriage satisfaction according to general special quality sentimentalize relation leading person and a friend Difference that keep in mind as statistical in factor during time appeared. Second, family cohesive power by dance sports participation existence and nonexistence and result family cohesive power that analyze marriage satisfaction 4 Hawibyeons be that of that it is a car that sentimentalize relation, family support keeps in mind appear. Third, result family cohesive power that analyze dance sports participation degree and family cohesive power and relation of marriage satisfaction was expose that it is corelation that keep in mind with participation period and participation strength and Chamgibindo. Fourth, family cohesive power and low rank factor of family cohesive power that express marriage savage tribe and the strongest corelation as result that analyze relation with marriage satisfaction appeared by family economy and are since next sentimentalize relation, family, was expose by order of Chingu·time. Also, marriage satisfaction's low rank factor which display family cohesive power and the highest corelation appeared and was expose by next order of marriage, communication, authoritative marriage that is affection enemy by adaptation about married life.

덤프 소각기에서 CCI_4/C_3H_8 분해 특성에 관한 연구

전영남,채종성,송형운,김미환 조선대학교 환경연구소 2001 環境硏究 Vol.17 No.1

A major source of the hazardous waste generated is from chemical industries producing plastics, herbicides, pesticides and chlorinated solvents. All of these process produce a class of hazardous waste termed the chlorinated hydrocarbons(CHCs), either directly or from undesirable side reactions. Generally, hazardous waste is physical characteristics of difficult destruction at high temperature. We investigated the destruction characteristics of hazardous waste through incineration. A nonequilibrium combustion model was used to describe the effect of the chemical kinetics due to the flame inhibition characteristics of CCl_4 which was used as the surrogate of hazardous waste. In this study, the numerical simulation data for 3-dimensional dump combustor shows a quantitative good agreement with experimental data. Also dump incinerator shows high destruction efficience of CCl_4. And parametric screening studies was carried out through numerical simulation with changed CCl_4/C_3H_8 ratio, waste injection velocity and waste equilibrium ratio.