서울의 Penicillinase Producing Neisseria gonorrhoeae 발생빈도(1998)

김재홍,김준호,반재용,이정우,황성주,정준규,정성태,강진문,조흔정,홍창의,정혜신,이한승,김이선,이봉길,이종호,선영우,한기덕,윤성필,이성훈,안종성,박석범,문승현,조항래,김형섭,류지호,황재영,박준홍,손상욱 한양대학교 의과대학 2001 한양의대 학술지 Vol.21 No.1

In recent years, gonorrhea has been pandemic and remains one of the most common STDs in the world, especially in developing countries. For the detection of a more effective therapeutic regimen and assessing the prevalence of Penicillinase Producing Neisseria gonorrhoeae(PPNG), we have been trying to study the patients who have visited the Venereal Disease Clinic of Choong-Ku Public Health Center in Seoul since 1980 by menas of the chromogenic cephalosporin method. In 1998, 93 strians of N. genorrhoeae were isolated, among which 60(64.5%) were PPNG. The prevalence of PPNG in Seoul, which had been decreased to 39% in 1996 after a peak of 74.3% in 1993, is increased to 64.5% in 1998.

구내 골신장술 후 식립된 전치부 임플란트보철 치험보고

김한석,김명래,이성근,강상원,김기환,김형섭 大韓顎顔面成形再建外科學會 2003 Maxillofacial Plastic Reconstructive Surgery Vol.25 No.1

Objective : This is to report the effectiveness of intraoral distraction osteogenesis for alveolar augmentation in the extremely atrophied alveolar defects and to review the clinical results of the 2 cases. Subjects and Methods : Anterior segmental osteotomy was performed and the trans-oral alveolar distractors(Martin, Germany) were applied in 2 patients with the severe acquired anterior maxillary and mandibular defect. After latent period for 1 week, the osteomized alveolar segments were distracted by 1 ㎜ a day (0.5 ㎜/l turn) for 8 days in case Ⅰ and 0.6 ㎜ a day(0.3 ㎜/l turn) for 10 days in case Ⅱ. The consolidation period was about 8 weeks in each case. Thereafter, 6 titanium threaded implants(Branemark, Restore) were simultaneously installed with removal of distractor. The implants were tested clinically and radiographically. Results : Amounts of acquired alveolar bone were 8 ㎜ in case Ⅰ and 6 ㎜ in case Ⅱ respectively, with the increased width of the ridge crests and soft tissue expansion. Dental implants installated on the augmented alveolar ridges in 8 weeks after distrction were confirmed as in good osseointegration and in good function without any complications. Conclusion : Intraoral distraction osteogenesis can be a good option for alveolar ridge augmentation of the severely atrophied ridges and soft-tissue defects. However, for the better vector control of distracting segments and for anterior esthetics, customized distraction devices could be considered later.

상악 골절단 및 급속구개확장(SARME)을 이용한 술전 치성보상의 해소와 악교정 치험 2례 : REPORT OF 2 CASES

강상원,김명래,김기환,김한석,김채두 大韓顎顔面成形再建外科學會 2003 Maxillofacial Plastic Reconstructive Surgery Vol.25 No.4

This is to review the surgically assisted rapid maxillary expansion followed by orthodontic treatment for malocclusion with maxillary narrow-arch. Two patients who presented with narrow-arch maloccluson and transverse maxillary deficiency underwent a Lefort I osteotomy extending to the zygomatico-maxillary but-trees and splitting of the midpalates. Orthopedic expansion was initiated with one complete rotation 0.8㎜ of the expansion screw on the day, and followed by two quarter-turn 0.4㎜ each day thereafter untill the arch expanded to preplanned level. Changes of the mid-incisal gap space. intermolar width. incisal inclination, TMJ symptoms and reapse tendency were examined periodically. After the surgico-orthodontic leveling and alignment. pre-planned orthognathic surgeries (maxillary & mandibular osteotomies) were rendered to correct the maxillofacial deformites. Results:Intermolar width (IMW) was increased to 13㎜ within 20 days and the gap between to cen-tral incisors was declined to5-7^。. There were neither complaints nor signs of TMJ disorders during treatment. The amount of relapse was less than 0.5㎜ in a year. Therefore, the surgically assisted rapid palatal expansion(SARME) can be a pre-orthodontic option to gain the interdental space in narrow-arch malocclusion with crowding and to reduce the labial inclination of upper incisors without extraction of premolars.

Test strip과 Chlorophyll meter를 이용한 토마토의 신속한 영양진단

김권래,정한울,김계훈 한국농화학회 2003 Applied Biological Chemistry (Appl Biol Chem) Vol.46 No.2

본 연구는 지금까지 제시된 여러 가지 간이 식물영양 진단 방법들 중 test strip과 chlorophyll meter의 이용가능성을 검토하고 실제 이용 방안을 모색하고자 수행되었다. 본 실험에서는 양액의 N, P, K 수준을 달리하여 토마토를 재배하면서 생육시기별로 specific color difference sensor value(SCDSV), 엽병 즙액 중 NO_3, PO_4, K의 함량을 측정하였다. 실험 결과 N, P, K 함량의 변화보다 더 민감하였다. Test strip을 이용하여 측정한 토마토 엽병 즙액 중 NO_3, PO_4, K함량 변화가엽 중 total-N, P, K의 농도와 고도의 일차상관관계를 나타내었다. 지금까지 여러 연구를 통해 확립된 토마토의 엽 중 total-N, P, K의 적정 함량을 희귀식에 대입하여 구한 즙액의 적정 NO_3, PO_4, K의 함량은 각각 3.4~5.9, 0.3~0.5, 3.6~6.5 g/l였다. Chlorophyll meter를 이용하여 측정한 SCDSV는 엽 중 total-N 함량을 희귀식에 대입하여 계산한 결과 적정 SCDSV는 36.0~40.0이었다. 본 연구 결과 test strip과 chlorophyll meter는 토마토의 신속한 영양 진단에 이용 할 수 있을 것으로 판단된다. This study was performed to develop a more rapid and simple nutrient diagnosis method of plants than the conventional leaf analysis method. Tomato (Lycopersicon esculentum Mill. cv. super momotaro) was planted in the mixed media produced by nidxing perlite and rock wool at I : I (v/v) ratio. The Yamazakki nutrient solutions for cucumber and tomato were supplied to the media using the rnicro-drip irrigation system. Experimental plots produced consisted of no fertilization, deficient fertilization, adequate fertilization and surplus fertilization for N, P and K, respectively. Each experimental plot was replicated four times. Specific color different sensor values (SCDSV) measured by the chlorophyll meter were closely related to total-N concentrations in the leaves measured by the conventional method. Nitrate, PO, and K concentrations in petiole sap measured by test strips (Reflectoquant, Merck, Germany) showed a significant relationship with total-N, P and K concentrations in leaves. The linear regression equations between NO,, PO, and K concentrations in petiole sap and total-N, P and K concentrations in the leaves were prepared. The optimum levels of NO,, PO, and K in petiole sap were obtained by plugging the optimum concentrations of total-N, P and K in the leaves by other researchers into the equations. In conclusion, the SCDSV by the chlorophyll meter and concentrations of NO,, P and K in petiole sap measured by the test strips would be suitable for rapid estimation of plant nutrient status.

고기능 치재용 시멘트 및 세척용 화학용액 개발

김종수,송근호,오한기,이광래 강원대학교 부설 석재복합신소재 제품연구센터 2000 석재연 논문집 Vol.5 No.-

치과용 도구세척을 위한 화학용액을 개발하기 위하여, 상용 치과재료용 화학용액의 주성분을 바탕으로 분해성능에 영향을 미치는 성분, 조성, 조건에 대한 연구를 수행하였다. 분해성능은 온도가 높을수록, 초음파의 세기가 클수록 향상되었다. 화학용액에 첨가된 계면활성제는 분해를 촉진시켰으며 계면활성제의 종류에 따라 부내성능에 큰 차이를 보였다. 알콜류는 분해성능을 저하시키는 나타났으며 시멘트류는 NaOHtndyddor에, 석고류는 sodium bicarbonate 수용액에서 뛰어난 분해성능을 보였다. Chemical solutions were prepared and the effects of chemical composition of decomposition ability of cleaning solution for dental instruments were studied. With high temperature and ultrasonic intensity, decomposition ability of cleaning solution were improved. Certain surfactants(Miwon Commercial Co. Ltd) such as amine oxides and alkanol amides accelerated decomposition rate of cleaning solution. Alcohols added to solution made worse the decomposition capability of cleaning solution. Dental cements and gypsums were well decomposed in sodium hydroxide aqueous solution and sodium bicarbonate aqueous solution respectively.

멧돼지 생식후 발생한 선모충증의 가족 내 집단발생사례

김에스더,편래현,박지한,김강호,최일,박홍훈,이용희,용태순,홍성관 대한감염학회 2003 감염과 화학요법 Vol.35 No.3

선모충증은 전 세계적으로 발생하는 기생충 인수공통감염의 한로 선모충의 유충에 감염된 육류를 덜 익혀 섭식시 발생하며 감염 초기에 설사, 복통의 증상이 나타나며 후기에 유충의 체내 이행으로 발열, 근염, 안검 부종 등이 동반된다. 확진은 근육 생검을 하여 피포 유충을 확인하는 것이고 최근에는 특이 항체를 측정하거나 유전자 검사와 같은 다양한 검사가 시도되고 있다. 저자 등은 4명의 한 가족이 야생 멧돼지를 생식한 후 선모충증의 전형적인 임상 증상 및 검사 소견을 보인 가족 내 집단발생사례를 경험하였기에 문헌 고찰과 함께 보고하는 바이다. Trichinosis is a worldwide parasitic infection caused by ingesting an uncooked raw meat containing viable larvae of nematode Trichinella. Although most cases have been reported in Western countries, the incidence has decreased due to strict control of meat handlings and improved hygiene in these countries. In Korea, the first case of Trichinella spiralis was reported in a patient who ingested an uncooked badger. We have also experienced four cases of Trichinella spiralis infestation among family members who showed typical clinical manifestations and laboratory findings after ingesting raw wild swine meat, and herein report the finding.

부산 시내버스 이용 및 만족도에 관한 연구

김대래 · 조용언 · 도한영 신라대학교 부산학연구센터 2021 부산연구 Vol.19 No.1

이 논문은 설문조사를 통하여 부산시민들의 시내버스 이용 및 만족도를 알아본 것이다. 응 답자는 300명으로 성별 구성은 남자 131명, 여자 169명이었다. 시내버스 이용여부에 대한 질 문에 절반이 약간 넘는 52%가 시내버스를 이용한다고 응답하였다. 반면 48%의 응답자는 시 내버스를 이용하지 않는다고 응답하였다. 왜 시내버스를 이용하지 않는가에 대한 설문에서는 ‘자가용이 편해서’라는 응답이 19.9%로 가장 많았고 그 다음은 ‘목적지까지 시간이 많이 걸려서’로 11.1%였다. 이어 ‘도시철도가 더 편해서’가 9.3%였다. 크게 보아 시내버스를 이용하지 않는 것은 더 편리한 대체교통수단이 있 기 때문이라 할 수 있다. 시내버스를 이용하는 이유에 대해서는 ‘시내버스가 편해서’>‘환승이 편하고 무료환승이라 서’>‘바로가는 노선이 있어서’>‘정류소가 가까이 있어서’ 순이었다. 네 요인 모두에 공통되는 것은 ‘편리함’이라고 할 수 있다. 사람들이 버스를 이용하는 주된 계기는 이용하기 편리할 때 라는 것을 잘 말해주고 있다. 시내버스 서비스 7개 항목에 대한 만족도에서는 ‘버스내부상태’>‘정류소시설’>‘정류소접근 성’>‘친절수준’>‘안전수준’>‘배차간격’>‘요금수준’ 순으로 높은 평가가 있었다. 응답자들은 ‘요 금수준’에 가장 만족도가 낮았고 그 다음은 ‘배차간격’이었다. 그리고 ‘안전운전’에 대해서도 상대적으로 낮은 만족도를 보였다. 한편 ‘전체만족도’를 종속변수로 하고 ‘버스내부상태’, ‘정류소시설’, ‘정류소접근성’, ‘친절수 준’, ‘안전수준’, ‘배차간격’, ‘요금수준’을 독립변수로 하여 다중회귀분석을 한 결과 ‘정류소접근 성’>‘친절’>‘안전운전’>‘버스내부상태’>‘배차간격’>‘정류소시설’>‘요금수준’의 순으로 만족도에 영향을 많이 미치는 것으로 나타났다. 환승시스템과 버스중앙전용차로 그리고 복지노선 운영에 대한 설문에서는 대체로 만족하는 사람들의 비율이 높았다. 버스중앙전용차로에 대해 불만족인 이유는 ‘전용노선 때문에 자가용 이용이 불편해서’가 7.68%로 1위, ‘통행시간이 생각보다 줄지않아서’가 2위, ‘정류장이나 노선 경로의 안전상 문제’가 있어서가 4.21%로 3위를 기록하였다. 한편 버스이용승객의 감소에 미 치는 영향에 대한 설문에서는 ‘긴 배차간격’>‘자가용이용증가’>‘도시철도중심 교통정책’>‘신속 성과 정시성 저하’>‘노선체계 불합리’>‘인구감소 및 고령화’>‘요금인상’>‘접근성 불편’>‘환승 체계미비’>‘차량노후와 승하차불편’>‘버스인프라부족’>‘정류장시설부족’ 순으로 중요하다는 응 답이 나왔다.

사후분해 시체에 대한 법의학적 접근

최영식,이상용,김유훈,조갑래,이봉우,양경무,정낙은,서중석,이한영,이원태,강현욱 大韓法醫學會 2000 대한법의학회지 Vol.24 No.2

Disposal of a homicide victim by dismemberment is rare, but individual cases are on record in most major medicolegal departments. Recognition of postmortem mutilation may be of importance in the interpretation of certain murders committed by sexual perverts and other mentally deranged individuals and sometimes performed for the sole reason of easier disposal of the body. Postmortem dismemberment is usually readily recognizable as such; The edges of the injuries are dry and lack evidence of bleeding. The joints may be disarticulated without fracture, or the use of an axe or saw may be evident from examination of bones. Parallel horizontal or oblique furrows in the bone surface are caused by skipping of the saw prior to establishing depth. Such patterns on the bone may assist in identifying the particular saw involved. So we report 25 dismembered corpses that autopsied in National Institute of Scientific Investigation. This paper can help in attempting to establish not only the first criminal investigation steps but also the medicolegal approach methods in unidentified and dismembered deaths.

경도인지장애 환자에서 복합-일상활동의 제한

홍지혜,정한용,김양래,이소영,김진만 大韓神經精神醫學會 2008 신경정신의학 Vol.47 No.4

Objectives : Mild cognitive impairment (MCI) is distinguished from mild dementia by an absence of global intellectual deterioration and the preservation of activities of daily living (ADL). Recently, however, it became apparent that impairment of instrumental activities of daily living (IADL) is present before the threshold of dementia is reached. Thus, we want to examine whether IADL are impaired in patients with MCI, and which items of IADL are particularly involved. We divided the MCI group into amnestic (aMCI) and non-amnestic MCI (naMCI), and compared to the cognitively nonnal controls. In this study, we focused on the instrumental activities of daily living (IADL). Methods : The sample consisted of 69 community-dwelling older adults from a welfare center for the aged in Korea. The subjects were divided into three diagnostic groups; aMCI [N=19, memory domains below -1.5 standard deviation (SD)], naMCI (N= 19, other cognitive domains below -1.5 SD, except memory domains) and cognitive normal controls (N=31). Subjects were assessed both on IADL and the cognitive function. In order to assess the IADL, we used the Seoul -Instrumental Activities of Daily Living (S-IADL). Included measures of cognitive tests are as follows ; Seoul Verbal Learning Test (SVLT), Rey Complex Figure Test (RCFT), Korean-Boston Naming Test (K-BNT), Stroop test, and Korean-Mini Mental Status Examination (K-MMSE). Groups were compared on the S-IADL and the cognitive tests. Results : The three groups did not differ in the mean age, gender distribution and years of education. S-IADL were shown to be different between the groups in this study. Suects with aMCI were significantly more impaired in S-IADL in comparison to the controls [F (2,50) = 4.251, P=0.020]. And on four items ofS-IADL (shopping, transportation, medication and talking about recent events), subjects with aMCI showed higher impairment compared to the controls. However, the S-IADL did not differ between the subjects with naMCI and controls. Conclusion : In this study, impairment of S-IADL was shown in subjects with aMCI. And S-IADL ofnaMCI was not Significantly differed from aMCI and controls. The results suggest that naMCI would be distinguished from aMCI in characteristics and prognosis.

TDMA 셀룰라 시스템에서 개별-탭 계수를 이용한 적응 등화기에 관한 연구

홍성수,박래수,한현택,김학춘,정찬주,나상동 조선대학교 동력자원연구소 1995 動力資源硏究所誌 Vol.17 No.1

Demodulation wants to adaptive equalizer to minimize interference of intersymbol which generate in multipath fading channel results from signal time and variety multi propagation through channel in digital radio network systems. Therefore using transition ratio of transfer and receiver system and the number of forward and backward using existing individual taps, we study improvement algorithms which generated bit error ratio by signal in frequence select fading. We analysis and compare linear equalizer and decision feedback nonlinear equalizer. Proposed algorithm is more efficent in fading environment when compared of step size by channel character which estimated existing least square and ITLMS algorithm. In this paper, using ITLMS algorithm by decision feedback BER is reduced for intersymbol interference by narrowband TDMA multipath fading in invironment without individual tap weight overlay.