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.

2003년 국내 중증급성호흡기증후군 진료 현황 및 문제점 분석

이진수,김은실,정문현,백제중,정선화,안주희,최영화,이선희,고철우,김성범,김민자,박승철,기현균,송재훈,최상호,김양수,이상오,조용균,박영훈,정숙인,김연숙,이흥범,손창희,장성희,정희진,김우주 대한감염학회 2004 감염과 화학요법 Vol.36 No.3

목적 : 2002년 말 중국에서 SARS가 발생한 이후 국내에서도 2003년 10월까지 총 3명의 추정환자, 17명의 의심환자가 보고되었다. 향후 추가적인 SARS의 유행이 우려되는 상황에서, 그간의 SARS 환자 진료에 있어서의 실질적인 준비사항, 진료 현황 등에 대한 조사를 통해 문제점을 파악하여, 향후 더 나은 대비가 될 수 있도록 개선점을 제시하고자 하였다. 재료 및 방법 : SARS로 의심되는 환자를 진료 경험이 있는 병원의료진을 대상으로 2003년 10월에 설문조사를 실시하였다. 설문에는 SARS 환자 진료 시의 실질적인 조치, 진료 현황, 병실, 응급실 및 외래에서의 격리 시설과 준비사항, 보건당국의 관리와 지원에 관한 사항을 포함하였다. 결과 : 대상이 되는 22개 병원 중 17개(17/22, 77.2%) 병원이 설문에 응하였다. SARS 환자를 위한 격리실은 응급실, 외래, 일반병실 및 중환자실에서 각각 9개(9/17, 52.9%), 5개(5/17, 29.4%), 15개(15/16, 93.7%), 4개(4/16, 25%) 병원에서 음압처리가 되어있지 않은 일인실 혹은 다인실이 사용되었고, 1개(1/16, 6.3%) 병원에서만 일반병실에서 음압격리실이 운영되었다. 입원환자의 진찰 시 개인보호구의 착용은 거의 모든 의료기관에서 이루어졌다. 보건당국에서 SARS지정병원의 시설 등을 사전에 확인한 곳은 1곳(1/12, 8.3%)이였고, 14개 병원(14/15, 93.3%)에서는 보건당국에 의뢰한 검사결과를 통하 받지 못하였다. 결론 : 의료기관에서 SARS 환자용 격리실뿐만 아니라 기존의 격리실 설비 등이 미흡하였으며, 특히 중환자실 및 외래의 준비가 더욱 부족하였다. 보건당국의 의료기관에 대한 종합적인 지원이 부족하였고, 병원과의 원활한 연계가 잘 이루어지지 않았다. SARS 만이 아닌 격리를 필요로 하는 질환의 적절한 진료를 위해 향후 병원 시설의 정비와 정부차원에서의 보다 구체적이고 실질적인 대책마련이 필요하다. Background : There was an worldwide outbreak of the Severe Acute Respiratory Syndrome (SARS) originated from China in late 2002. During that period three cases of suspected SARS and 17 cases of probable SARS were reported in Korea. With the concerns about the reemergence of SARS-coV transmission, it is important to be prepared for any possibility. So, this study is aimed to analysis the past measures in managing SARS and propose the amendatory plans to improve the preparedness. Materials & Methods : Questionnaires were collected among clinicians with any experience in managing the probable or suspected SARS cases in Oct. 2003. 17 out of 22 hospitals responded to the questionnaire. The contents in the questionnaire were practical activities, personal equipments, response plans, isolation facilities in emergency centers, outpatient clinics, general wards and intensive care units, and relationship with the public health department. Results : The dedicated isolation rooms in emergency centers, outpatient clinics, general wards, and intensive care units were prepared in 9 (9/17, 52.9%), 5 (5/17, 29.4%), 15 (15/16, 93.7%), and 4 (4/16, 25.0%) hospitals, respectively. Except for one hospital that newly made negative pressure room for SARS, single or multi-bed rooms without airborne infection control were used in all the other hospitals. The personal precaution principles were kept quite well in general wards. Before the designation of SARS hospital by the public health department prior evalution to see if the hospital was suitable for managing SARS was conducted in only 1 (1/12, 8.3%) hospital. The results of laboratory diagnosis were reported back in 1 (1/15, 6.6%) hospital. Conclusions : The isolation facilities which can control airborne infection were almost deficient not only for SARS but also for other respiratory transmissible diseases. For the infection control of transmissible diseases including SARS, more investment is needed on medical facilities and comprehensive support from the public health department required.

^40Ca(d, p)^41Ca에서 의곡파 보른근사에 의한 핵반응단면적 계산

안상규,양재춘 충남대학교 자연과학연구소 1993 忠南科學硏究誌 Vol.20 No.2

Nuclear reaction cross section of single-stripping has been calculated with distorted wave born approximation(DWBA) in ^40Ca(d, p)^41Ca reaction. The cross section has been calculated in the deuteron -^40Ca reaction, where one neutron was transferred to the 2 P_3/2 states, so ^40Ca was producted. The results of calculation has been well agreed with experimental cross section data in the low energy range.

뇌 자기공명영상상 뇌량 병변의 호전을 보인 Marchiafava-Bignami병 1예

정재훈,성기범,안무영,신현길,박형국 대한신경과학회 1999 대한신경과학회지 Vol.17 No.5

^40Ca(t,p)^42Ca 핵반응의 의곡파 보른근사에 의한 미분단면적 계산

안정선,양재춘,오근석,김성현 충남대학교 자연과학연구소 1993 忠南科學硏究誌 Vol.20 No.1

Differential cross section of double-stripping nuclear reaction has been calculated with distorted wave Born approximation(DWBA) in ^40Ca(t.p)^42Ca reaction. The angular distribution shape of differential cross section shows large peak in forward. And it has small oscillation. It determines the angular momentum transfer and then the final state of the nucleus is predicted by the angular distribution. In the ^40Ca(t.p)^42Ca reaction, the angular momentum L of the transfered neutron pair from triton is equal to the total angular momentum of the final state nucleus ^42Ca and the parity of the final state is even.

부분 치수절단술을 이용한 복잡 치관파절의 치료 : 증례보고

안병덕,김영재,장기택,이상훈,김종철,한세현,김정욱 大韓小兒齒科學會 2008 大韓小兒齒科學會誌 Vol.35 No.2

혼합 치열기 및 초기 영구치열기의 소아,청소년에서 외상에 의한 치관 파절은 빈번하게 발생한다. 치관파절은 치수의 노출 유무에 따라 단순 치관파절,복잡 치관파절로 분류된다. 치수가 노출된 복잡 치관파절의 경우 치수에 대한 고려 및 처치가 필수적인데,초기 영구치열기에는 전치부 치근의 발육이 완전히 이루어지지 않았기 때문에 완성된 치근을 가지는 치아보다 치료가 복잡하다. 치료의 목적은 적절한 치수 치료를 통해 치근의 완성을 도모하는 것으로 이를 위해 직접 치수복조술,부분 치수절단술,치경부 치수절단술의 방법을 이용한다. 이 중 부분 치수절단술은 성공률도 높으며 치경부 치수를 보존하기 때문에 여러 장점을 지니는 치료방법이다. 복잡 치관파절을 주소로 내원한 환자에서 부분 치수절단술을 시행하여 양호한 결과를 나타내어 이를 보고하는 바이다. Traumatic crown fracture in mixed dentition or early permanent dentition is relatively common. Crown fracture is classified into simple or complicated crown fracture by the presence of pulp exposure. The condition of pulp must be considered in treatment of crown fractures with pulp exposure. Treatment of immature crown-fractured incisor with pulp exposure is more complex because of its incomplete root formation. Pulp capping, partial pulpotomy, cervical pulpotomy can be used for continuous root development in immature crown-fractured incisor with pulp exposure. The success rate of partial pulpotomy is very high and there are several advantages of partial pulpotomy because the cell-rich coronal pulp tissue is preserved. This paper reports 2 cases of crown-fractured permanent incisors with pulp exposure that had been treated by partial pulpotomy successfully.

정보통신 서비스의 실패 요인 : 한국의 텔레콤 서비스시장에서의 실패사례연구

안재현,권재원,김명수,이동주,이상윤,한상필 한국경영과학회 2002 한국경영과학회지 Vol.27 No.3

In this paper, 15 South Korean telecommunications service failure cases were analyzed. Through the in-depth case study, 8 factors were found to be the major causes contributing to the telecommunications service failure. They were (1) ineffective marketing, (2) poor demand forecasting due to misjudgment of customer preference, (3) failure to satisfy technical specifications, (4) loss of cost advantage due to the price cut of competing service or new entry with power price, (5) loss of utility advantage due to the increased utility of competing service or new entry with higher utility (6) decrease of market attractiveness due to change of customer preference, (7) impact of government policy, and (8) insufficient or low quality of contents. Additional analysis was done to derive managerial implications to the new telecommunications service development strategy. The findings from the paper will provide valuable insight to the successful implementation of new service development and service provisioning processes.

개방성 또는 분쇄상 경골 골절의 수술적 치료 : Ilizarov 체외고정기를 이용한 치료 Using Ilizarov external fixator

안재성,이상용 충남대학교 의과대학 지역사회의학연구소 1997 충남의대잡지 Vol.24 No.1

Various methods have been used in the treatment of tibial fractures in adults. In recent years, generally accepted two surgical methods are compression plate with screw fixation and intramedullary nailing for closed fracture, and external fixator or intramedullary nail for open fracture. There is still controversies in the method of surgical treatment for open and severe comminuted tibia fracture according to there degree of comminution and extent of soft tissue injury. So we tried to evaluate the treatment result that fractures could not be fixed with other device except Ilzarov external fixators. We retrospectively analyzed fifteen tibia fracture patients from January 1991 to December 1994 with mean follow up 22 months. Despite of some complications, we could get bony union between 29 and 34 weeks. So, we recommended the Ilizarow external fixator fixations is the last method of fixation is the case of other fixation device could not be applied.

경추 추간판 탈출증의 치료

안재성,안성환 충남대학교 의학연구소 2003 충남의대잡지 Vol.30 No.2

We would like to compare the case of treatment using surgical operation with the case of treatment using conservative method to the patients who are diagnosed as cervical disc herniation. This study has been done with each 21 and 83 patients who were available for 1 year -100 patients who had cervical disc herniation were treated with surgical operation and 175 patients were treated with conservative treatment in Chungnam National University Hospital. Each of convalescence were compared to odom's criteria along with the age of outbreak of illness, numbers of diseased segments, which is calculated by loss of radiating pain, subjective satisfaction, and return to their job. The group who are over 60 years old, surgical treatment had positive result. Also the group who are under 60 years old, conservative treatment had positive result. Radiculopathy due to cervical disc herniation had good result by surgical treatment when the patient is over 60 years old and has a few diseased segments. Therefore, it is considered that we should take a cautious attitude in choice of treatment.

지하 무선 CDMA 망의 전파 측정 및 Micro BTS의 성능 분석

안호중,노재성,조성언,조성준 한국항공대학교 1998 論文集 Vol.36 No.-

지하 무선망에서 CDMA(Code Division Multiple Access)시스템의 용량과 품질은 다중 사용자 간섭과 임펄스성 간섭의 영향을 받는다. 그러므로 CDMA 시스템에서는 간섭을 최소화하려는 연구가 필요하다. 최근에는 서비스 영역을 확대하기 위한 방법으로 지하 공간 또는 음영 지역에서 LCX(Leakage Coaxial Cable)가 이용되고 있다. 본 논문에서는 지하 무선 CDMA 망의 전파의 세기를 측정하였다. 그리고 측정된 결과를 이용하여 이론적인 Micro BTS의 성능을 분석하였다. 이론적인 BER 해석을 위하여 지하 무선 CDMA 망의 임펄스성 간섭 모델을 제안하고, 측정된 파라미터 값을 이용하여 Micro BTS의 BER 성능을 구하였다. 측정 결과, 지하철이 없을 경우보다 지하철이 운행함에 따라서 임펄스성 간섭이 중대됨을 알 수 있었으며, 단방향 운행보다 양방향 운행에서 임펄스성 간섭이 더욱 증가하였다. 수치 계산을 통하여 임펄스성 간섭의 발생 시간율과 다중 사용자 수에 따라 Micro BTS의 BER 성능이 주로 열화됨을 알 수 있었다. The capacity and quality of CDMA(Code Division Multiple Access) system are affected by multi user interference and impulsive interference in the underground wireless network. Therefore, it is essential to minimize the interference in CDMA system. Recently, LCX (Leaxial Cable) is used to expand service area in the underground area or shadow region. In this paper, the propagation of underground wireless CDMA network is measured. And then, using the measured data the theoretical performance of Micro BTS(Base Transmitter Station) is analyzed. For theoretical BER analysis, the impulsive interference model in the underground wireless CDMA network is proposed and the BER performance of Micro BTS is obtained by using the measured data. From the measurement results, it is found that the impulsive interference increases in the presence of passing train than the absence of passing train. Also, it is known that more interference appears in the presence of crossing two way train than in the presence of passing one way directional train. From the numerical results, the BER performance of Micro BTS is to be mainly degraded by the occurrence rate of impulsive interference and the number of multiple users.