고등어 및 정어리 선어의 휘발성성분

조우진,김훈,정연정,이영미,정은정,차용준 창원대학교 생활과학연구소 2002 생활과학연구 Vol.- No.6

This study was conducted to identify volatile compounds, associating with quality deterioration, which may play roles as indicators for quality assessment in fresh mackerel and sardine. Volatile compounds were analyzed by liquid liquid continuous extraction(LLCE)/GC/MSD methods. A total of 83 and 81 volatile compounds were detected in fresh mackerel and sardine, respectively, and these compounds were mainly composed of aldehydes(12 in raw mackerel, 11 in raw sardine), ketones(7, 4), alcohols(15, 14), esters(1, 3), aromatic compounds(13, 15), terpenes(5, 7), S-containing compounds(2, 2), hydrocarbons(13, 11) and miscellaneous compounds(2, 1). Most of compounds including carbonyls, alcohols, aromatic compounds and hydrocarbons were derived from lipid oxidation, and some compounds were detected from microbial degradation. It was supposed that LLCE method was proper to seek indicators for quality assessment in fresh mackerel and sardine, because of various volatile compounds derived from nonthermal lipid oxidation.

1998-1999년 절기에 부산지역에서 유행한 인플루엔자 바이러스의 분리

정영기,정명주,이주연,안정배,김지희,김만수,조경순 동의대학교 기초과학연구소 2000 基礎科學硏究論文集 Vol.10 No.1

Investigate the epidemics for influenza outbreaks. The outbreak pattern of the internal and external patients housed in the 10 designated hospitals was monitered to investigated and the characteristics of the virus isolates are as follows. 232 strains of influenza virus was isolated from the oral specimen of 1,320 respiratory disease patients in Pusan from Oct. 1998 to Jun. 1999. Among these isolates, 222 strains were A-type and the rest were B-type. The outbreak pattern for sex-and age-group is as follows. The male outbreak was similar to the female outbreak: male outbreak, 47.4% and female outbreak, 52.5%. Most of the patients were less than 10 years old. The monthly influenza outbreak was consistent from Dec. 1998 to Apr. 1999. and The 113 strains from the A-type isolates were A/Sydney/05/97(H3N2)-like, the 109 strains were A/Beijing/262/95(H1N1)-like, and all of the 10 B-type isolates were B/Harbin/07/94-like.

하악과두의 인위적 병소에 대한 악관절 촬영법의 판독능 비교연구

조봉혜,정연화,정희정 大韓口腔顎顔面放射線學會 1997 Imaging Science in Dentistry Vol.27 No.2

The purpose of this study was to evaluate the detectability of various radiographic techniques for mandibular condylar lesions. Erowive lesion, osteophyte and flattening were formed on the artificial mandibular condyle, and panoramic, transcranial, transorbital radiography, lateral and frontal tomography were taken. The results were as follows; 1. The detectability for erosive lesions was superior in the order of frontal tomography(96%), lateral tomo-graphy (78%),transorbital(59%), transcranial(56%) and panoramic(48%)radiography. 2. The location of erosive lesion that showed the highest detectability was the medial third in panoramic, the lateral third in transcranial, the central portion of anteroposterior direction in transorbital, the central portion of mediolateral direction and the posterior third in lateral tomography. Frontal tomography disclosed all erosive lesions except one anterolateral lesion. 3. The detectability of osteophyte was 100% in lateral tomography, 78% in transcranial and 56% in panoramic radiography. 4. For flattening, lateral tomography showed the flattened condyle, but both panoramic and transcranial views showed only decreased bone density without the change of condylar shape.

측두하악관절 내장 환자의 관절원판과 관절원판 후조직의 자기공명영상 신호강도

정연화,조봉혜 대한구강악안면방사선학회 2001 Imaging Science in Dentistry Vol.31 No.2

Purpose : To analyze the possible association between magnetic resonance imaging signal intensity of temporomandibular joint disk and posterior attachment, and the type and extent of disk displacement, disk configuration, effusion and clinical signs in patients with internal derangement. Materials and Methods : Magnetic resonance images of the 132 temporomandibular joints of 66 patients with temporomandibular joint displacement were analyzed. The clinical findings were obtained by retrospective review of the patients' records. The type and extent of disk displacement, disk configuration and effusion were evaluated on the proton density MR images. The signal intensity from the anterior band, posterior band and posterior attachment were measured on MR images. The associations between the type and extent of disk displacement, disk configuration, effusion and clinical signs and the MR signal intensity of disk and posterior attachment were statistically analyzed by student's t-test. Results : Of 132 joints, 87 (65.9%) showed anterior disk displacement with reduction (ADR) and 45 (34.1%) showed anterior disk displacement without reduction (ADnR). The signals from posterior attachments were lower in joints with ADnR than those of ADR (p〈 0.05). The results showed statistically significant (p〈 0.05) association between the type and extent of disk displacement and disk configuration, and decreased signal intensity of posterior attachment. There were no statistical associations between pain, noise and limited mouth opening, and signal intensity of disk and posterior attachment. Conclusions : The average signal from posterior attachment was lower in joints with ADnR than that of ADR. The type and extent of disk displacement and disk configuration appeared to be correlated with the signal intensity from posterior attachment. (Korean J Oral Maxillofac Radiol 2001;31:93-9)

HPLC를 이용한 Alnus속 식물에서의 diarylheptanoids의 정량분석

정동욱,김준식,조수민,이연아,김광호,김세원,이민원 중앙대학교 약학연구소 1999 약학 논총 Vol.13 No.-

Quantitative determination of diarylheptanoids (oregonin and hirsutanonol), which were characteristic components of Alnus spp. has been conducted by High Performance Liquid Chromatography. The HPLC analysis was carried out using an YMC J'sphere ODS-H80 column [150×4.6mm, S-4μm. 80A(particle)] and a combination of acetonitrile and H2O was used as mobile phase in gradient solvent system. The results showed differnce in the species (Alnus japonica, A hirsuta and A. hirsuta var. sibirica)

하악 비대칭의 방사선학적 연구

정연화,조봉혜 大韓口腔顎顔面 放射線學會 1998 Imaging Science in Dentistry Vol.28 No.1

The purpose of this study was to perform the radiographic measurements and temporomandibular joint evaluation in mandibular asymmetry. For this study, thirty-two patients who have mandibular asymmetry were selected and submentovertex, panoramic and lateral corrected tomographic radiographs were taken. Horizontal and vertical analysis using various landmarks on these radiographs were performed. Also radiographic and clinical evaluation of temporomandibular joint were obtained. The results were as follows; 1. On the submentovertex radiograph, the mean distance of Pogonion to midline was 5.0±3.8mm. 2. The mean distance of Pogonion to Gonion was 100.6±9.2mm in deviated side and 104.3±9.1mm in contra-lateral side, and there was a significant difference between the deviated and the contra-lateral side(p<0.001). 3. The distance difference of Pogonion to Gonion between the deviated and the contra-lateral side was significantly related to the degree of asymmetry(p<0.001). 4. On panoramic radiograph, the condylar height of the contra-lateral side was significantly longer than the one of the deviated side(p<0.001). 5. On lateral corrected tomogram, bony changes of temporomandibular joint were observed in 11 condyles of the deviated side and 9 condyles of the contra-lateral side. Erosion and osteophyte were the most common changes in both the deviated and the contra-lateral sides.

주변성 거대세포 육아종의 증례보고

정연화,조봉혜,나경수,김성수 大韓口腔顎顔面放射線學會 1997 Imaging Science in Dentistry Vol.27 No.2

The authors experienced one case of peripheral giant cell granuloma occurred at the gingiva of right maxillary molar in a 12-year-old male patient. The lesion showed amorphous calcification within soft tissue mass which made difficult to differentiate this lesion from peripheral ossifying fibroma and peripheral odontogenic fibroma clinically and radiographically. The final diagnosis was made histologically.

두경부 림프관종의 증례보고

정연화,조봉혜,나경수 대한구강악안면방사선학회 2000 Imaging Science in Dentistry Vol.30 No.1

Lymphangiomas are uncommon benign congenital tumors. Most occur in the head and neck and most lesions present by the age of 2 years. We present our experience with four patients who have iymphangiomas of the head and neck with tongue involvement. First case is a 7-year-old male who has the cystic iymphangioma of left submandibular area. Second a 22-year-old female has a lesion involving the border outright tongue. Third case is the iymphangioma which occurs in the right upper lip of a 6-year old male. The last patient is a 28-year old male who fell down and whose right face was swollen up. He had undergone an operation and been treated with steroid before. The characteristic appearances of imaging methods were described and all lesions best depicted on T2-weighted images. Our experience indicates that MRI is useful in the diagnosis and treatment planning of iymphangioma. (Korean J Oral Maxillofac Radiol 2000; 30: 87-91)

일반학교에 배치된 특수교육보조원의 역할수행 어려움에 대한 질적 연구

조연희,이숙정 국립특수교육원 2008 특수교육연구 Vol.15 No.2

특수교육보조원 제도가 본격적으로 시행되고 있지만, 당사자들이 교육현장에서 겪는 역할갈등, 어려움 등에 대한 논의는 피상적 수준에 머무르고 있다. 구체적인 교수학습 현장에 투입되어 나름의 교육활동을 하고 있는 이들이 느끼는 어려움에 대한 심층적 고찰은 이 제도가 제대로 정착하고 발전하기 위한 초석을 마련하리라 본다. 본 연구는 특수교육보조원의 역할수행 어려움을 당사자를 대상으로 반구조화된 질문지를 기준으로 3가지 측면에서 심층면담하였다. 교수-학습 지원 상황에서는 눈치, 역할지시의 부재로 인한 혼란, 지식의 부족으로 어려움, 인간관계에서는 무시, 역할에 대한 잘못된 인식, 차별적 관심과 대우, 어중간한 중간입장으로 어려움이 있었으며, 또한 환경적인 부분에서는 열악한 고용조건, 나만의 공간 부족, 부족한 연수, 불투명한 소속, 육체적 노동으로 인해 어려움을 느끼고 있는 것으로 나타났다. The teacher-aid-system in the field of special education has emerged as a developmental system for effective inclusion from March 2003 in South Korea. The role-conflict and difficulties of paraprofessional in special education have almost discussed in survey inquiry. But the subjective feeling about role-conflict of paraprofessional in the real field of teacher-aid-system could be different from the results through general survey inquiry. The purpose of this study was to analyze and interpretate qualitatively what are the role-conflict and bottlenecks of paraprofessional in the real field. They are asked with half-structured questionary in interview in depth. The results of this study were that: (a) in terms of personal relations in the school: the paraprofessional confronts with the problems like neglecting, wrong perception about their roles, discriminative treatment and position hanging in midair, (b) As concerns about situation for learning-support, they should often see how the winds blow between teacher and students. Furthermore they are diffused cause of insufficient instructions from the teachers, how the paraprofessional should support the student with special educational needs. In these case, they blushed at their ignorance. (c) About the working condition: they are suffering with much inconvenience like bad salary, poor working surrounding, lack of own-recreative space and hard-physical working.

이동형 구내 방사선촬영기로 촬영한 치근단 방사선사진의 흡수선량 및 유효선량 평가

조정연,한원정,김은경 대한구강악안면방사선학회 2007 Imaging Science in Dentistry Vol.37 No.3

Purpose : The purpose of this study was to measure the absorbed dose and to calculate the effective dose for periapical radiography done by portable intraoral x-ray machines. Materials and Methods : 14 full mouth, upper posterior and lower posterior periapical radiographs were taken by wall-type 1 and portable type 3 intraoral x-ray machines. Thermoluminescent dosemeters were placed at 23 sites at the layers of the tissue-equivalent ART woman phantom for dosimetry. Average tissue absorbed dose and radiation weighted dose were calculated for each major anatomical site. Effective dose was calculated using 2005 ICRP tissue weighted factors. Results : On 14 full mouth periapical radiographs, the effective dose for wall-type x-ray machine was 30 Sv; for portable x-ray machines were 30 Sv, 22 Sv, 36 Sv. On upper posterior radiograph, the effective dose for wall-type x-ray machine was 4 Sv; for portable x-ray machines doses were 4 Sv, 3 Sv, 5 Sv. On lower posterior radiograph, the effective dose for wall type x-ray machine was 5 Sv; for portable x-ray machines doses were 4 Sv, 4 Sv, 5 Sv. Conclusion : Effective doses for periapical radiographs performed by portable intraoral x-ray machines were similar to doses for periapical radiographs taken by wall type intraoral x-ray machines.