한국 군 장병에서의 불안장애의 발생률

이승엽,윤창교,민정아,이창욱,박동언,안종성,이상돈,백명재,장준영,양주연,채정호,Lee, Seung-Yup,Yoon, Chang-Gyo,Min, Jung-Ah,Lee, Chang-Uk,Park, Dong-Un,Ahn, Jong-Seong,Lee, Sang Don,Baik, Myung Jae,Jang, Jun Young,Yang, Juyoun,Chae, Jeo 대한불안의학회 2014 대한불안의학회지 Vol.10 No.1

Objective : To obtain the incidence rate of anxiety disorders among the active duty Korean military personnel, who visited the military hospitals from 2011 to 2013, this descriptive epidemiological study was performed. Methods : After acquiring the data for the anxiety disorders from Defense Medical Statistics Information System, the annual incidence rates were analyzed by forces, position status, and specific disease entities. Results : One thousand, nine hundred and thirteen (1,913) active duty male military personnel were diagnosed with any kinds of anxiety disorders in their first visit to the psychiatric outpatient department (OPD). The total OPD visit counts were 7,870 during the same period. Anxiety disorder, NOS was the most frequent disorder, followed by panic disorder. While the incidence rate for anxiety disorder, NOS decreased, panic disorder displayed increasing tendency. Stress-related disorders and obsessive-compulsive disorder were positioned third and fourth, respectively, for the number of first visit and they both showed decreasing tendency in annual incidence rates. Social anxiety disorder, specific phobias, generalized anxiety disorder (GAD) and mixed anxiety-depressive disorder followed next. The annual incidence rates for anxiety disorders showed decreasing tendency, particularly evident in army soldiers. However, naval officers showed higher anxiety disorder incidence rate compared to those of the army and the air forces. Conclusion : Comparing to general population, panic disorder was higher while specific phobias and GAD were lower in the Korean military. It is interesting to observe higher incidence rate for anxiety disorder in naval officers and warrants further evaluation.

네리네(Nerine bowdenii)의 기내 인편배양시 자구형성에 미치는 생장조절제와 Sucrose 농도의 영향

이승엽,안정호,박윤점,Lee, Seung-Yeob,Ahn, Jeong-Ho,Park, Yun-Jum 한국식물생명공학회 2004 식물생명공학회지 Vol.31 No.2

네리네의 인편 배양에 의한 기내 증식을 위하여, 쌍인편으로부터 자구형성에 미치는 NAA와 BA 및 sucrose 농도의 영향을 조사하였다. 네리네의 쌍인편으로부터 기내 자구형성에 가장 적합한 배지는 1.0mg/L NAA와 2.0mg/L BA를 첨가한 MS배지였다. 적정 sucrose 농도는 30 g/L에서 가장 양호하였으며, 90g/L 이상의 sucrose 첨가배지에서의 자구형성은 심하게 억제되었다. 비대된 인편을 단축경과 함께 5mm크기로 잘라 60일 간격으로 1, 2, 3차 계대 배양한 결과, 절편당 자구수는 6.5, 7.3, 8.2개로 다수의 기내자구를 지속적으로 생산할 수 있었다. 기내 형성된 3mm 이상의 자구는 생장조절제를 첨가하지 않은 MS배지에 옮겨 60일간 생육시킨 후, 초장 50mm이상 자란 식물체를 버미큐라이트와 펄라이트를 1:1 혼합한 배양토에 순화시켰을 때, 생존율은 95% 이상으로 높았다. The twin-scale segments of nerine (Nerine bowdenii) were cultured to investigate the influence of NAA, BA and sucrose concentrations on in vitro bulblet formation. The formation of bulblets from twin-scale segments showed a good response both the percentage of bulblet formation and the number of bulblets per explant on MS medium supplemented with 1mg/L NAA and 2 mg/L BA. Formation of bulblet showed the highest efficiency on medium containing 30g/L, and the formation of bulblets was strongly inhibited on medium containing over 90g/L. When the twin-scale segments formed bulblets were subcultured three times to the same medium by 60 day subculture interval, the number of bulblets per explant was 6.5, 7.3 and 8.2 in order of first, second and third. The bulblets over 3mm in diameter were hypertrophied and rooted after transferring to the hormone-free MS medium. The plantlets over 50mm in height were successfully acclimatized in the soil mixed with the same volume of vermiculite and perlite, and the survival rate was over 95%.

한국원자력연구소 지하처분연구시설(KURT)의 암석 풍화 및 지화학적 특성

이승엽,백민훈,조원진,한필수,Lee, Seung-Yeop,Baik, Min-Hoon,Cho, Won-Jin,Hahn, Pil-Soo 한국방사성폐기물학회 2006 방사성폐기물학회지 Vol.4 No.4

A basic research was conducted on the mineral weathering and geochemical characteristics in the KURT (KAERI Underground Research Tunnel), which was recently constructed at a site in KAERI. Some rock samples exposed during the KURT construction were examined using a microscope and chemical analysis for some micro-changes of the rocks caused by the chemical weathering. The weathered granite has some small and fine cracks around the rock-forming minerals. In particular, there are a characteristic weathering of feldspar mineral and a preferential leaching of Ca component from the mineral dissolution. In addition, by the dissolution of biotite containing $Fe^{2+}$ component there were iron-oxides precipitates as secondary products into the microcracks of around minerals. The results also show that the micro-cracks initiated from the mineral interior are extended and connected into the larger cracks along the grain boundary with the progress of the weathering. Thus, it is considered that some chemicals dissolved from the fresh rock would be involved in the formation of secondary minerals and migrate interacting with them.

Mapping of Quantitative Trait Loci Associatedwith Viviparous Germination in Rice

이승엽,Moo Young Eun,Jeong Ho Ahn,Young Soon Cha,Doh Won Yun,Myung Cheol Lee 한국작물학회 2006 Korean journal of crop science Vol.51 No.7

The viviparous germination (VG) with lodging caused the yield reduction and quality deterioration in rice. We carried out the evaluation of VG tolerance (on the 40th day after heading) and mapping QTLs associated with VG tolerance using the recombinant inbred lines (M/G RILs) from a cross between Milyang 23 (japonica/indica) and Gihobyeo (japonica). The VG rates of Milyang 23 and Gihobyeo were 0.0 and 7.0%, respectively. The averaged VG rate of 162 M/G RILs was 7.7%, and their range was from 0.0 to 50.9%. Of the 162 RILs, 144 lines were tolerant less than 10%, and 18 lines were susceptible more than 10%. Using the M/G RIL Map, three QTLs associated with the viviparous trait were detected on chromosome 2 (qVG 2-1 and qVG 2-2) and 8 (qVG 8). qVG 2-1 was linked to RM 32D and RZ 166, and had LOD score of 2.97. qVG 2-2 was tightly linked to E13M59.119-P1 and E13M59.M003-P2, and showed higher LOD score of 3.41. qVG 8 was linked to RM33 and TCT116, and had LOD score of 2.67. The total phenotypic variance explained by the three QTLs was about 24.4% of the total variance in the population. The detection of new QTLs associated with VG tolerance will provide important informations for the seed dormancy, low temperature germination, or comparative genetics.

연구발표논문초록 : 분리공정 ( Ⅳ ) ; 상태방정식을 이용한 혼합물의 임계특성치 추산

이승엽,배효광 ( 정 ) ( Seung Yeob Lee,Hyo Kwang Bae ) 한국화학공학회 1985 추계총회초록집 Vol.- No.-

Sol-gel법에 의한 Al과 F가 첨가된 ZnO 투명전도막의 전기 및 광학적 특성

이승엽,이민재,박병옥,Lee, Seung-Yup,Lee, Min-Jae,Park, Byung-Ok 한국결정성장학회 2006 한국결정성장학회지 Vol.16 No.2

Al이 첨가된 ZnO(ZnO : Al) 박막과 F이 첨가된 ZnO(ZnO : F) 박막을 sol-gel 법을 이용하여 glass 기판위에 코팅하였다. 공통적으로 (002)면의 c-축 배향성을 보였지만 I(002)/[I(002) + I(101)]와 FWHM(full width at half-maximum) 값은 차이를 보였다. 특히 입자크기에 있어서는 ZnO : Al 박막에서 첨가농도가 증가함에 따라 입자크기가 감소한 반면 ZnO : F 박막에서는 F 3 at%까지 입자크기가 증가하다가 그 이후로 다시 감소하는 경향을 보였다. 진기적 성질의 측정을 위해서 Hall effect measurement를 이용하였는데 ZnO : Al 박막의 경우 Al 1 at%에서 비저항이 $2.9{\times}10^{-2}{\Omega}cm$ 이었고 ZnO : F에서는 F 3 at%에서 $3.3{\times}10^{-1}{\Omega}cm$의 값을 보였다. 또한 ZnO : F 박막은 ZnO : Al 박막에 비해서 캐리어 농도는 낮았지만(ZnO : Al $4.8{\times}10^{18}cm^{-3}$, ZnO : F $3.9{\times}10^{16}cm^{-3}$) 이동도에 있어서 상당히 큰 값(ZnO : Al $45cm^2/Vs$ ZnO:F $495cm^2/Vs$)을 보였다. 가시광선 영역에서의 평균 광투과도에 있어서는 ZnO : Al 박막에서 $86{\sim}90%$의 값을 보였지만 ZnO : F에서는 $77{\sim}85%$로 상대적으로 낮은 광투과도를 나타내었다. Al-doped and F-doped ZnO (ZnO : Al & ZnO : F) thin films were coated onto glass substrate by sol-gel method. These films showed c-axis orientation in common, but different I(002)/[I(002) + I(101)] and FWHM (full width at half-maximum). In particular, the grain size of the ZnO : Al films decreased with the increase in the Al-doping concentration, while for the ZnO : F films the grain siae increased up to F 3 at% and then decreased. For the electrical properties, Hall effect measurement was used. The resistivity of the ZnO : Al films and the ZnO : F films were, respectively, $2.9{\times}10^{-2}{\Omega}cm$ at Al 1 at% and $3.3{\times}10^{-1}{\Omega}cm$ at F 3 at%. Moreover compared with ZnO:Al films, ZnO:F films have lower carrier concentration (ZnO : Al $4.8{\times}10^{18}cm^{-3}$, ZnO : F $3.9{\times}10^{16}cm^{-3}$) and higher mobility (ZnO : Al $45cm^2/Vs$, ZnO : F $495cm^2/Vs$). For average optical transmittances, ZnO : Al thin films have $86{\sim}90%$ and ZnO : F films have $77{\sim}85%$ comparatively low.

효율적인 수은이온 검출을 위한 피렌-보론산 기반의 형광센서 개발

이승엽,이성호,Lee, Seung Yeob,Lee, Seoung Ho 한국환경과학회 2020 한국환경과학회지 Vol.29 No.2

A new chemosensor based on a self-assembled system has been devised to detect Hg²⁺ions efficiently. We demonstrated that the amphiphilic building blocks consisting of pyrene and boronic acid (1) aggregate in aqueous solutions and provide an outstanding sensing platform for sensitive detection. The self-assembled 1 exhibited high selectivity and sensitivity for Hg²⁺ion detection via fluorescence quenching, where the Hg²⁺ion detection ensued from a fast transmetallation of 1. The Stern-Volmer (SV) quenching constant for its fluorescence quenching by Hg²⁺ions was approximately 1.58 × 10⁸ M^-1. In addition, self-assembled 1 exhibited excellent sensing abilities at nano-molar concentration levels when tap water and freshwater samples were contaminated with of Hg²⁺ ions.

유향-가중 그래프 이론의 상수도관망에 적용

이승엽,정동휘,Lee, Seung-Yeop,Jeong, Dong-Hwi 한국수자원학회 2018 물과 미래(한국수자원학회지) Vol.51 No.6

A study on the prevalence of the idiopathic osteosclerosis in Korean malocclusion patients

이승엽,박인우,장인산,최동순,차봉근,Lee, Seung-Youp,Park, In-Woo,Jang, In-San,Choi, Dong-Soon,Cha, Bong-Kuen Korean Academy of Oral and Maxillofacial Radiology 2010 Imaging Science in Dentistry Vol.40 No.4

Purpose : This retrospective study was performed to investigate the prevalence of the idiopathic osteosclerosis (IO) in Korean malocclusion patients according to age, sex, and the Angle's classification of malocclusion. Materials and Methods : This study consisted of 2,001 randomly selected patients from the Department of Orthodontics at the Gangneung-Wonju National University Dental Hospital, Korea. The prevalence of IO in Korean malocclusion patients was recorded using their panoramic radiographs, and the following parameters were surveyed; age, sex, and the Angle's classification of malocclusion. The chi-square test was analyzed to determine the statistical significance of differences in the prevalence of IO between age, sex, and the Angle's classification of malocclusion. Results : The prevalence of IO in the jaws was 6.7% in a total of 2,001 examined orthodontic patients. The majority of IO was found in the mandible (96.58%). The 30-39 age group showed the highest prevalence of IO (9.60%). There was a higher prevalence in females (6.89%) than in males (6.45%). The prevalence of IO in Angle Class I group (7.07%) was the most frequent, followed by Angle Class II group (6.72%), and Angle Class III group (6.40%). However, there was no statistical significance in sex and Angle's classification of malocclusion. Conclusion : The prevalence of IO in malocclusion patients showed the differences between various age groups and most of them were found in the mandibular posterior area. However, sex and the type of malocclusion are not to be considered as a contributing factor of IO.

Influence of Iron Phases on Microbial U(VI) Reduction

이승엽,Min Hoon Baik,이민희,Young Boo Lee,이용재 한국지하수토양환경학회 2011 지하수토양환경 Vol.16 No.6

Influence of Iron Phases on Microbial U(VI) Reduction The bacterial uranium(VI) reduction and its resultant low solubility make this process an attractive option for removing U from groundwater. An impact of aqueous suspending iron phase, which is redox sensitive and ubiquitous in subsurface groundwater, on the U(VI) bioreduction by Shewanella putrefaciens CN32 was investigated. In our batch experiment, the U(VI) concentration (5×10^(-5)M) gradually decreased to a non-detectable level during the microbial respiration. However,when Fe(III) phase was suspended in solution, bioreduction of U(VI) was significantly suppressed due to a preferred reduction of Fe(III) instead of U(VI). This shows that the suspending amorphous Fe(III) phase can be a strong inhibitor to the U(VI) bioreduction. On the contrary, when iron was present as a soluble Fe(II) in the solution, the U(VI) removal was largely enhanced. The microbially-catalyzed U(VI) reduction resulted in an accumulation of solid-type U particles in and around the cells. Electron elemental investigations for the precipitates show that some background cations such as Ca and P were favorably coprecipitated with U. This implies that aqueous U tends to be stabilized by complexing with Ca or P ions, which easily diffuse and coprecipitate with U in and around the microbial cell.