전경대원에서 발생한 결핵의 임상 양상

문창기,박상준,조민구,김영중,김소연,김윤권,정준오,안석진,김은실,서승오,김지훈,최원제,이윤영,박형기,최규영,김현근 대한감염학회 2006 감염과 화학요법 Vol.38 No.6

Background: The purpose of this study was to document the incidence and clinical characteristics of patients with tuberculosis (TB) in combat and auxiliary police, living in a group, in Korea where the incidence rate of active TB in a general population is higher than in Western countries. Materials and Methods:We retrospectively reviewed the medical records of all tuberculosis patients diagnosed at National Police Hospital from January 2002 through December 2004. Results:In 2002-2004, a total of 156 cases of tuberculosis were identified with the mean (Standard deviation) age of 20.6 (±1.0) years. Of these, 134 (85.9%) patients were registered as new cases, 11 (7.1%) as relapse, 2 (1.3%) as failure, 5 (3.1%) as treatment-after-default cases whereas 4 (2.6 %) patients were not included in any categories. Average annual new TB rate and smear-positive TB rate were 86.5/10^(5) and 17.4/10^(5) person-years, respectively. In 12 of 31 smear-positive cases, time from onset of symptoms to diagnosis was more than 30 days. Two multidrug-resistance TB cases were identified and two suspected outbreak episodes of TB had occurred during 3 years. Conclusion:There was no statistically significant difference in the incidence rate of new cases of TB between the general population aged 20 to 29 years and combat and auxiliary police in Korea. 배경 : 국내 결핵의 발생은 감소 추세에 있으나 여전히 후진국형 발생양상을 보이고 있다. 특히 집단생활을 하는 젊은이들에서 발생하는 결핵의 유행이 간헐적으로 알려지고 있어 우려를 낳고 있다. 이에 저자들은 최근 전경대원의 결핵 발병 양상에 대해 알아보고자 본 연구를 시행하였다. 재료 및 방법 : 2002년 1월부터 2004년 12월까지 3년간 경찰병원에서 결핵 진료를 받은 전경대원의 의무기록을 후향적으로 분석하여 연도별 결핵 신환발생률, 도말양성결핵 신환율, 진단 지연, 집단발병, 다제내성결핵을 조사하였다. 결과 : 연도별 결핵 신환자 수(10만명당 발생추정치)는 2002년 50명(83.6명), 2003년 42명(83.7명), 2004년 42명(93.5명)이었고 도말양성 폐결핵 신환자 수는 2002년 10명(16.7명), 2003년 11명(21.9명), 2004년 6명(13.4명)이었다. 3년간 도말양성 폐결핵 환자는 31명이 있었고 그 중 12명은 호흡기 증상 발생 30일이 지나서 진단을 받았다. 다제내성 결핵은 2명이 있었으며 결핵의 집단발병이 의심되는 사례는 2차례 있었다. 결론 : 전경대원과 20-29세 연령군 일반인의 결핵 신환발생률, 도말양성 폐결핵 발생률의 통계적으로 유의한 차이는 없었다.

다구치법에 의한 고 규소 내산주철의 용해주조공정 최적화

신제식,이상목,문병문,김정철,한동운,백승한 대한금속재료학회 2005 대한금속·재료학회지 Vol.43 No.2

In this study, Taguchi method, one of the design tools of experiments, was applied to optimize casting process parameters of the high silicon corrosion-resistant iron. Three casting process parameters such as melting temperature, rare earth metal (mischmetal) addition, and pouring temperature were chosen. Using SN (signal-to-noise) ratio calculated from ultimate tensile strength of each experimental casting run, the relationship between the casting parameters and mechanical properties was statistically evaluated. The casting condition of a melting temperature of 1,650℃, 0.2% rare earth metal addition, and a pouring temperature of 1,350℃ led to an excellent ultimate tensile strength above 11 kgf/mm², which is beyond the industrial criterion. The effects of the casting parameters on mechanical properties and corrosion resistance were further confirmed by combined analysis of fractography, hydrogen content determination, microscopic test, and acid resistance test. (Received August 23, 2004)

한국 주요정신장애의 유병률 및 관련요인 : 2006 전국정신질환역학조사

조맹제,장성만,함봉진,정인원,배안,이영문,안준호,원승희,손정우,홍진표,배재남,이동우,조성진,박종익,이준영,김진영,전홍진,이해우 大韓神經精神醫學會 2009 신경정신의학 Vol.48 No.3

Objectives The aims of this study are to estimate the prevalence of the DSM-IV psychiatric disorders in the Korean population using the Korean version of Composite International Diagnostic Interview (K-CIDI), and to compare those with previous studies. Methods The Korean Epidemiologic Catchment Area study Replication (KECA-R) was Conducted between August 2006 and April 2007. The sampling of the subjects was carried out across 12 catchment areas. A multistage, cluster sampling design was adopted. The target Population included all eligible residents aged 181o 64 years. Face-to-face interviews were conducted with the Korean version of Composite International Diagnostic Interview (K-CIDI) based on the DSM-IV (N=6,510, response rate=81.7%). Results A total of 6,510 participants completed the interview. The lifetime and 12-month prevalence rates for all types of DSM-IV disorders were 30.0% and 17.3%, respectively. Those of Specific disorders were as follows : 1) alcohol use disorder, 16.2% and 5.6% ; 2) nicotine use disorder, 9.0% and 6.0% ; 3) specific phobia, 3.8% and 3.4% ; 4) major depressive disorder, 5.6% and 2.5% ; and 5) generalized anxiety disorder, 1.6% and 0.8%. Data relating to nicotine and alcohol use disorder revealed a very high male/female ratio. Mood disorder and anxiety disorder were more prevalent among females than males. Conclusion The prevalence of psychiatric disorders was high. In comparison with other studies, remarkable differences in the distribution of psychiatric disorders across the country and times were observed.

일방향응고 초내열합금 CM186LC의 크리프 및 저주기피로 균열생성

趙昌龍,金豆炫,崔承柱,徐晟文,李在鉉 창원대학교 공작기계기술연구센터 1999 연구업적집 Vol.1 No.1

The second generation DS alloy CM186LC has comparable creep-rupture life to first generation single crystal alloys CMSX-2 and CMSX-3 in the as-cast and double aged condition. In the assembly of nozzle guide vanes, Ds components are joined into pairs by brazing. In order to study mechanical behavior of the material at the same condition as production, DS bars were subjected to brazing simulated treatments. Compared with standard treatment a small drop in creep-rupture life was observed but the degree of fall in life was not serious. Creep cracks initiated at the transverse components of the grain boundaries, which were normal to the applied stress direction. Every crack was associated with the v-v' eutectic phase at grain boundaries v-v' eutectic was not only located at grain boundaries but also in the interdendritic regions. It also acted as crack initiation site during creep. Low cycle fatigue tests were conducted under fully reversed trapezoidal strain wave at a frequency of 0.25Hz. The depth of the LCF cracks at the surface was comparable to that of the secondary dendrite arms from the surf-ace of the specimen. Cracks initiated at all of the interdendritic regions exposed at the surface, especially at the v-v' eutectic phase. LCF crack initiation and propagation are therefore proposed to be microstructally dependent.

서울의 PPNG 발생 빈도(1991-1992)

김재홍,윤기범,박평원,김영진,전경민,김영태,김중환,곽호,구상완,송민석,유옥,지혜구,김동원,문상은,박영립,정승호,성범진,성순제,엄주용,황정열,이기홍,이주협,전태진 대한화학요법학회 1994 대한화학요법학회지 Vol.12 No.1

The prevalence of PPNG among pretreated gonorrhea cases isolated at the STD clinic of Choong-Ku Public Health Center in Seoul has been studied and reported annually since 1981. In 1991, 123 strains of N.gonorrhoeae were isolated, among which 58(47.1%) were PPNG. In 1992, 98 starains of N.gonorrhoeae were isolated, among which 51(52.0%) were PPNG. In all, 109(49.3%) strains were found to be PPNG among 221 strains isolated between 1991-1992. The prevalence of PPNG in Seoul showed increased tendency till 1989, thereafter, it has been stationary or slightly decreasing.

The Study of Magnetic Properties in Lithium-iron Phosphate

Seung Je Moon,Choong-Sub Lee,Chul Sung Kim 한국자기학회 2008 한국자기학회 학술연구발표회 논문개요집 Vol.- No.-

Investigation of Microscopic Crystal Field in Co-Doped Lithium-Iron Phosphate

Seung Je Moon,Taejoon Kouh,Choong Sub Lee,Chul Sung Kim IEEE 2009 IEEE transactions on magnetics Vol.45 No.6

<P>We present the study on the structural and the magnetic properties of LiFePO<SUB>4</SUB> and LiFe<SUB>0.8</SUB>Co<SUB>0.2</SUB>PO<SUB>4</SUB>. The crystal structure was determined to be orthorhombic with space group <I>P</I>nma by Rietveld refinement method. We have observed the increase in the lattice constants with Co<SUP>2+</SUP> ion substituted. The Mossbauer spectra of olivine LiFePO<SUB>4</SUB> and LiFe<SUB>0.8</SUB>Co<SUB>0.2</SUB>PO<SUB>4</SUB> have shown distorted line broadening below <I>T</I> <SUB>N</SUB> . In order to explain the observed line broadening, we have analyzed the Mossbauer spectra by considering the full Hamiltonian for the <SUP>57</SUP>Fe nucleus, and both the magnetic dipole and the electric quadrupole interactions. Also, we have observed the anomalous change in the electric quadrupole splitting near the <I>T</I> <SUB>N</SUB>.</P>

Effect of Substituting Potassium in Ordered Li-Ferrites by on Its Magnetic Properties

Seung Je Moon,김철성,김삼진 한국물리학회 2008 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.52 No.2

Ordered α-Li1-xKxFeO2 (x = 0.00, 0.05, 0.07 and 0.10) powders were prepared by using a sol-gel method. The α-Li1-xKxFeO2 single-phases are observed in the samples annealed at 650℃ for 3 hrs in air. The crystal structure of α-Li1-xKxFeO2 is found to be cubic with a lattice constant in the range for on a = 4.1615 0.0005 A to 4.1600 0.0005 A, which changes with the amount of K (potassium). The Neel temperatures of α-Li1-xKxFeO2 is about TN = 97 ± 5 K. The isomer shift at 4.2 K is found to be about 0.36 mm/s relative to the Fe metal, which is consistent with high-spin Fe3+ charge states.

Interaction Energy Changed by Substituting Potassium in Li-ferrites

Seung Je Moon,Chul Sung Kim 한국자기학회 2007 한국자기학회 학술연구발표회 논문개요집 Vol.- No.-

Crystallographic and magnetic properties of KFeO₂

Moon, Seung Je,Shim, In-Bo,Kim, Chul Sung IEEE 2006 IEEE transactions on magnetics Vol.42 No.10

The crystallographic and magnetic properties of KFeO<SUB>2</SUB> powder prepared by ball-mill method, have been studied by X-ray diffraction (XRD), Mossbauer spectroscopy, and vibrating sample magnetometer (VSM) measurements. The crystal structure of KFeO<SUB>2</SUB> powder at room temperature is determined to be an orthorhombic structure of Pbca with its lattice constants a<SUB>0</SUB>=5.594,b<SUB>0</SUB>=11.247, and c<SUB>0</SUB>=15.863 Å by Reitveld refinement. The M-H curves show antiferromagnetic behavior at 34 K and room temperature. Mossbauer spectra of KFeO<SUB>2</SUB> were taken at various temperatures ranging from 4.2 to 600 K. And the Neel temperature (T<SUB>N</SUB>) was determined to be 930 K. The magnetic hyperfine field and isomer shift value at 4.2 K were 519 kOe and 0.19 mm/s, respectively.