극한기술에 의한 유해폐기물의 처리

현영진,오윤근 제주대학교 환경연구소 2000 환경연구논문집 : 제주대 Vol.8 No.-

단거리 선수의 수행수준 차이에 따른 생리학적 변인의 특성

정연수,오세진 韓國體育大學校附屬 體育科學硏究所 1996 韓國體育大學校附屬 體育科學硏究所論文集 Vol.15 No.1

The purpose of this study was to compare physiological characteristics of three different levels of 100m female sprints. the 30 subjects in this study were assigned, according to their 100m running time, to one of three different group: fast, average, slow. All subjects were tested for performance in the Wingate anaerobic test, strength, fat %, reaction time, flexibility, aerobic power. The data was analyzed by one-way ANOVA with post-hoc Turkey test, which was performed on each variable to find difference between the groups. The ANOVA indicated significient differences among all three groups for performance in the Wingate anaerobic test and relative strength. The dofferences in reaction time were significient only between thr fast and the average groups. Significient and negative correlation were found between thew 100m running time, relative strength, and performance in the Wingate anaerobic test. Significient and pogitive correlation were found between running time, % fat. No significient correlation were found between running time and peak ?? reaction time and fiexibility. Stepwise regression analysis indicated that the combination of performance in the Wingate anaerobic test and strength providedthe most efficient(r=0.92) prediction of 100m run times. This study demonstrated that the main difference among female sprinters of different performance levels lies in their ability to, produce muscular power, strength.

로드 시뮬레이터를 이용한 대형트럭의 승차성능 평가에 관한 연구

문일동,오재윤,전지명,김진옥 전북대학교 공학연구원 ( 구 전북대학교 공업기술연구소 ) 2002 工學硏究 Vol.33 No.-

This paper proposes a scheme to assess a heavy truck's ride performance in an objective way using road simulator test results. The road simulator has six posters. They are excited in in-phase mode or out-of-phase mode to produce bounce, pitch or roll motion independently. In the road simulator test with a real vehicle, 8-accelerometer, 4-displacement sensor, and one gyro system are used for measuring the vehicle's vertical acceleration, vertical displacement, pitch angle and roll angle. The accelerometers are attached at each axle, left and right frame, and driver seat floor of the cab. They are used to monitor the vehicle's bouncing motion. The displacement sensors are attached at the center of the first and last cross member of the frame, and left and right of the deck. They are used to monitor pitch and roll motion of the frame. The gyro system is attached at the mass center of the cab. It is used to monitor the cab's pitch and roll motion. The real vehicle's road simulator test results are processed to identify the natural frequencies of bounce, pitch and roll mode with respect to a driver. The identified natural frequencies are compared with ride performance criteria defined by ISO2361 to assess the vehicle's ride performance.

한국인 영어학습자와 영어원어민의 영어모음 발음 분석

구희산,오연진 中央大學校 韓國敎育問題硏究所 2001 韓國敎育問題硏究所論文集 Vol.- No.16

The purpose of this experimental thesis is to distinguish the differences in the way they produce vowel sound between Korean learners of English and English native speakers through acoustic phonetical experiment. To find out the distinctive features of English vowels that Americans and Koreans Pronounce, formant frequencies in spectrograph were measured. For the experiment. 3 Americans and 6 Koreans recorded their vowel pronunciation in sentences with minimal pairs. The result shows that Koreans usually move their tongue not as wide as Americans do. This may have caused by the language transfer. Moreover Americans pronounce back vowels longer while Koreans make front vowel sound longer. The reason for that is Americans use their tongue root more actively than Koreans.

구강악안면 영역의 치성 감염 환자에 대한 세균학적 연구

김일규,윤승환,오성섭,최진호,오남식,김의성,이성호,배수환,강문수 대한악안면성형재건외과학회 2000 Maxillofacial Plastic Reconstructive Surgery Vol.22 No.4

Oral & maxillofacial infections are most commonly odontogenic in origin. Although such infections are usually self-limiting, they may occasionally spread deeply into fascial spaces or planes far from the initial site of involvement. If early diagnosis and appropriate therapy is delayed, complications such as mediastinal extension, retropharyngeal spread and airway obstruction could happen to the patients. For the study of the microbiology, we have retrospectively analysed the oral & maxillofacial infected patients in the Dept. of Oral & Maxillofacial Surgery, In-Ha University Hospital from 1997 September to 2000 April. The results were as follows 1.The male patients were more common than female, with male 61.9% and female 38.1%. 2.Dental originated infections were most common cause with the incidence of 62%. 3.Most common fascial space involved was buccal space 42cases(37.2%) followed by submandibular space 13cases(11.5%), infraorbital space 13cases(11.5%), masseteric space 11cases(9.7%) , periapical abscess 11cases(9.7%) . 4.The causative organisms isolated from the pus culture were Gram Positive Bacterial species, which were 46cases(31.9%) of Streptococcus viridans, 16cases(8.6%) of α and β-hemolytic streptococcus, 4cases(3.1%) of Strep.-group D non enterococci, 7cases(5.1%) of Staphylococcus Coa. Neg., 5cases(3.9%) of Staphylococcus aureus, 3cases(2.3%) of Enterococcus faecalis, 1case(0.8%) of Bacillus species, 1case(0.8%) of Peptostreptococcus, 1case(0.8%) of Clostridium and Gram negative bacterial species, which were 4cases(3.1%) of Acinetobacter baumannii, 2cases(1.6%) of Pseudomonas aeruginosa, 2cases(1.6%) of Burkholderia cepacia, 1case(0.8%) of Neisseria species, 1case(0.8%) of Klebsiella pneumoniae, 1case(0.8%) of Klebsiella oxytoca, 1case(0.8%) of Escherichia coli. 5.In drug sensitivity test, high resistant tendency was found in Penicillin system(Penicillin G 83.3%, Ampicillin 60%) and Aminoglycosides (Gentamycin 50%, Tobramycin 45.5%), but tertiary Cephalosporin system(Cefoperazone 9.1%, Ceftazidime 18.2%), and glycopeptides system (Teicoplanin 0% , Vancomycin 0%) showed lower resistancy.

경부 림프절 비대의 진단에 있어서 초음파 유도하의 핵 생검의 유용성

김은경,곽진영,유재경,박정수,정웅윤,양우익,오기근 대한초음파의학회 2003 ULTRASONOGRAPHY Vol.22 No.4

투과전자현미경 내 직접 가열 실험에서의 실험적 문제들

김영민,김진규,김양수,오상호,김윤중 韓國電子顯微鏡學會 2008 Applied microscopy Vol.38 No.4

In performing in situ heating transmission electron microscopy (TEM) for materials characterizations, arising concerns such as specimen drifts and unintentional Cu contamination are discussed. In particular, we analysed the thermal and mechanical characteristics of in situ heating holders to estimate thermal drift phenomena. From the experimental results, we suggest an empirical model to describe the thermal drift behavior so that we can design an effective plan for in situ heating experiment. Practical approaches to minimize several hindrances arisen from the experiment are proposed. We believe that our experimental recommendations will be useful for a microscopist fascinated with the powerful potential of in situ heating TEM.

강원도 사북-고한 지역의 석탄광 폐석에 대한 물리적, 역학적 특성 연구

임한욱,정윤영,목진호,김종훈,김재동,신동오 강원대학교 석재복합신소재제품연구센터 1996 석재연 논문집 Vol.1 No.-

석탄광 폐석의 건설용 골재로서 활용 가능성을 검토하기 위하여 폐석의 주요 구성암석인 사암, 사질혈암, 혈암, 탄질혈암을 대상으로 기초물성실험, 역학적 실험 및 골재원 특성 실험을 실시하였다. 시험결과치의 평균값을 기준으로 할 때 사암, 사질혈암, 혈암은 골재로서 활용이 가능하나, 실험치의 분산도가 심하여 활용가능 폐석과 불가능한 폐석이 혼재되 있음을 확인하였다. 반면에 탄질혈암은 골재원 특성이 가능하나 강도등 물성에서는 사용이 곤란한 것으로 판단되었다. 따라서 앞으로 폐석중 활용가능한 사암, 사질혈암 및 혈암을 효율적으로 분급하는 방안과 금번에 실시하지 못한 골재의 알카리 반응시험 등이 추가로 보완되었으면 한다. An experimental program was undertaken to test rock wastes from coal mines, for use as a new source of aggregate. Physical and mechanical properties, required for aggregate materials, of major constituents of rock wastes including sandstones, sandy shales, shales, and coal shales, were measured in the laboratory. Test results showed that the sandstones, sandy shales and shales tested in this study might possibly be used for construction aggregates, the highly scattered test data indicated considerable proportion of unusable rocks. In case of coal shales, the aggregate characteristics were generally adoptable but some physical properties such as rock strength were lower than required. In conclusion, it is suggested that an effective procedure for sorting the rock wastes, and additional tests such as alkali-aggregate reaction should be supplemented.

노인에서 내피의존성 혈관반응에 대한 비타민 C의 효과에 대한 연구

온영근,김용석,오도연,최진호,황의석,김철호 대한노인병학회 2001 Annals of geriatric medicine and research Vol.5 No.1

복수과 진료 환자의 중복 처방에 대한 분석 및 평가

이지은,장혜경,오지영,유윤경,김현지,임숙인,연숙희,강진숙,최귀령 한국병원약사회 2003 병원약사회지 Vol.20 No.1

In an aging society, there is an increasing possibility of the duplication of the drugs given to patients because they take many kinds of drugs. Among the prescriptions given to the patients who was treated at multiple ambulatory clinics in St. Mary's hospital for one month of September, 2002, in which drugs that has identical or similar effects are prescribed, we analysed and evaluated them by patients' characteristics, kinds of medication, severity of side effects on a case by case basis. More, we assessed the potential additional costs. As a result of this study, the duplication rate turned out to be 6.69% and it was shown that the proportion of the elderly patients over 60 was high. The gastro-intestinal medications took up a large part and most of the cases showed that the danger caused by double taking of medicine was slight, but there were some examples in which the serious side effects were predicted. Expected additional costs were the average 11.349 won and it ranges from the minimum of 56 won to the maximum of 135,720 won. In conclusion, the management of drug histories of the patients who need the plural treatments is very important and the necessity of the individual and professional guidance of taking medicines for the elderly patients is emerged, too.