두 가족의 가족성 모야모야병 환자 4례

구자성,노재규,박성호,이한보,이용석,윤창호,송치성,송재우 대한신경과학회 1998 대한신경과학회지 Vol.16 No.4

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.

가스화 - 수소 회수 공정 개발을 위한 예비실험

차재준(Jae-Jun Cha),김영석(Young-Suk Kim),이진호(Jin-Ho Lee),황순모(Soon-Mo Hwang),정성재(Seong-Jae Jeong) 한국열환경공학회 2010 한국열환경공학회 학술대회지 Vol.2010 No.춘계

Hydrothermal synthesis and application of Ho³⁺-activated NaYbF₄ bifunctional upconverting nanoparticles for <i>in vitro</i> cell imaging and latent fingerprint detection

Du, Peng,Zhang, Peng,Kang, Seong Ho,Yu, Jae Su Elsevier 2017 Sensors and actuators. B Chemical Vol.252 No.-

<P><B>Abstract</B></P> <P>The Ho<SUP>3+</SUP>-activated NaYbF<SUB>4</SUB> upconverting nanoparticles (UCNPs) were synthesized <I>via</I> a facile hydrothermal method and characterized by X-ray diffraction pattern, transmission electron microscope image and upconversion (UC) emission spectrum. Upon the excitation of 980nm light, the as-prepared UCNPs exhibited bright green and red UC emissions corresponding to the (<SUP>5</SUP>F<SUB>4</SUB>,<SUP>5</SUP>S<SUB>2</SUB>) → <SUP>5</SUP>I<SUB>8</SUB> and <SUP>5</SUP>F<SUB>5</SUB> → <SUP>5</SUP>I<SUB>8</SUB> transitions of Ho<SUP>3+</SUP> ions, respectively. The cell toxicity test result revealed that the synthesized UCNPs possessed remarkable low cytotoxicity. With the introduction of the resultant UCNPs into the HeLa cells, intense green and red UC emissions were observed, indicating that the HeLa cells can be labeled by the obtained UCNPs and they had potential application in live cell imaging. Additionally, the practicality of the resultant UCNPs for latent fingerprint was also systematically investigated. These results suggest that the Ho<SUP>3+</SUP>-activated NaYbF<SUB>4</SUB> UCNPs are very promising as a bifunctional nanoparticle for <I>in vitro</I> cell imaging and latent fingerprint detection.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Under 980nm light excitation, the synthesized UCNPs emitted eye-visible emissions. </LI> <LI> The resultant UCNPs possessed low cell toxicity. </LI> <LI> The as-prepared UCNPs were suitable for live cell imaging. </LI> <LI> The synthesized UCNPs have promising application in latent fingerprint detection. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P> <I>In vitro</I> upconversion luminescence imaging of HeLa cells under the irradiation of 980nm light; Photographs of latent fingerprint stained by NaYbF<SUB>4</SUB>:Ho<SUP>3+</SUP> UCNPs under 980nm light excitation.</P> <P>[DISPLAY OMISSION]</P>

생활체육지도자의 이직의사에 관한 조사 연구

성영호,신문형,박재홍 龍仁大學校 1999 용인대학교 논문집 Vol.17 No.-

The purpose of this study was to examine the factors that influence voluntary tunovers among leaders who are employed in Leisure and sports. The factors were found to he external, job - related, and personal. A survey was administered to 218 leaders of the following organizations that studied at Yong - in University, to success a third class leader in Leisure and sports with man 151 persons and female 67 ant 1988. A questionaire was designed to establish the causal factors of Yang - Jin Hawn(1992), Park - Se Hong(1994), Jun - Chan yol(1994), Lee - Ki Hyo(1995) in leisure and sports. The questionnaire had a high index in the Cronbach'a = 6485 ~ 8911 test. These surveys were cpmpleted using self - administration method. First, to analyze the data for the study, the frequencies, t-test, one -way ANOVA was sued to analyze the collected data. The results of this study were as fellows : First, the external factors associated with voluntary turnovers had not a stronger impact on the sex, education, prestige, salary on the decision. Second, the joh - related factors associated with voluntary turnovers has net friedship satisvaction and productivity. Third, the personal factors associated with voluntary turovers has not a stronger impact on turnover rate than job' opportunity.

유구치의 편측치아절제술을 이용한 공간유지장치

이제호,김성호,손홍규,김준현 大韓小兒齒科學會 1997 大韓小兒齒科學會誌 Vol.24 No.4

Patient with alveolar abscess due to dental caries with severe alveolar bone loss, severe tooth mobility, root resorption need extraction of tooth because it is impossible to carry out pulp treatment and restoration by using conventional method. Early loss of primary molar might cause masticatory interference, extrusion of opposing tooth, problem in maintaining space and interference on eruption of permanent tooth. Especially, early loss of primary second molar before the eruption of permanent first molar might cause space closure by mesially erupted permanent first molar and impaction of second premolar. In such a case, distal shoe space maintainer and removable space regaining appliance was the first choice of treatment. But, distal shoe space maintainer need precise adaptation and might cause chronic inflammation if the oral hygiene is poor. In a case using removable space regaining appliance, patient's cooperation is most important. If the distal root of primary second molar is comparably sound and alveolar abscess with alveolar bone loss is localized at mesial root, hemisection should be carried out for precise guide to eruption of the permanent first molar, restoration of masticatory fuction and solution to the discomfort of the patient.

저장용액의 온도에 따른 치주인대세포의 생존율

조재현,김성오,최형준,이제호,손흥규,최병재 대한소아치과학회 2007 大韓小兒齒科學會誌 Vol.34 No.1

외상성 손상 후 치아 탈구 시 치아를 저장하는 저장용액의 종류와 온도가 치주인대세포의 생존율에 어떠한 영향을 미치는지 연구하기 위하여 치주인대세포를 10% fetus bovine serum(FBD) 함유 α-minimal essential medium(α-MEM)에서 37℃ 5% CO_(2) 공기 혼합 배양기에서 배양하고 4.25, 37℃의 Hank's balanced sa1t solution(HBSS)과 α-MEM, 우유(S회사, P회사), tap water에 저장하고 60분이 지난 후 각 군에 대해 치주인대세포의 생존율을 측정하기 위하여 MTT assay를 시행하여 다음과 같은 결과를 얻었다. 1. 4℃ 저장용액의 치주인대세포의 생존율은 α-MEM과 P회사우유에서 가장 높았고 HBSS, S회사우유, tap water 순으로 낮았다. 2. 25℃ 저장용액의 치주인대세포의 생존율은 α-MEM에서 가장 높았고 P회사우유, HBSS, S회사우유, tap water 순으로 낮았다. 3. 37℃ 저장용액의 치주인대세포의 생존율은 α-MEM과 P회사우유, HDSS, S회사우유에서 높았고 tap water에서 가장 낮았다. 4. α-MEM의 치주인대세포의 생존율은 4℃에서 가장 높았고 25℃와 37℃ 순으로 낮았으며 HBSS에서는 4℃에서 높았고 25℃와 37℃에서 낮았다. 5. S회사와 P회사우유에서 치주인대세포의 생존율은 4℃와 25℃에서 높았고 37℃에서 낮았다. 이상의 결과를 종합해볼 때 외상으로 인해 치아가 탈구되었을 때 탈구된 치아의 저장용액으로 HBSS 용액이 추천되고 있으나 이 연구에서 4℃와 25℃ 우유에서 치주인대세포의 생존율이 높았으므로 사고 현장에서 쉽게 구할 수 있고 치주인대세포의 생활력 보존에도 유리한 낮은 온도의 우유에 탈구된 치아를 보존하는 방법도 좋을 것으로 생각된다. To compare the survival rate of periodontal ligament cells preserved in storage media with good availability at the time of an avulsion injury, periodontal ligament cells were incubated in α-MEM culture medium containing 10% FBS in condition of 37℃, 5% CO_(2). These cells were then cultured in HBSS, α-MEM, milk(S. co., P. co.) and tap water at the temperature of 4, 25, 37℃ each in 60 min. The groups were measured by MTT assay. The results were as follows : 1. Among the storage media at 4℃, α-MEM and P-milk had the highest preserving ability of periodontal ligament cells, while that of HBSS, S-milk and tap was low in order. 2. Among the storage media at 25℃, α-MEM had the highest preserving ability of periodontal ligament cells, while that of P-milk, HBSS, S-milk, tap water was low in order. 3. Among the storage media at 37℃, the preserving ability of periodontal ligament cells was very high in α-MEM, P-milk, HBSS and S-milk. it' s lowest in tap water. 4. The preserving ability of periodontal ligament cells in α-MEM was high at 4℃ and it’s low in order of 25℃, 37℃, but in HBSS was high at 4℃ and it's low at 25℃, 37℃. 5. The preserving ability of periodontal ligament cells in S-milk and P-milk was high at 4℃, 25℃ and it’s low at 37℃. In conclusion, HBSS is the storage medium of choice in an avulsion, but in this study it is preferable to choose milk at 4℃ for tooth since it is easy to get and affect cell viability.

디메칠포름아미드에 의한 간기능 장해에 관한 연구

강성규,장재연,이경용,정호근 大韓産業醫學會 1991 대한직업환경의학회지 Vol.3 No.1

To investigate the liver dysfunction among workers exposed to dimethylformamide, 24 workers were examined on the liver transaminases and the urine metabolite. The results were as follows: 1. Nine of 24 workers examined had abnormal values in serum aspartate aminotransferase(AST), 5 in serum alanine aminotransferase (ALT), 1 in Υ-glutamyl transferase(Υ-GT). The possibilties of hepatitis due to other causes were excluded by the viral serologic tests and other results. 2. The urinary excretion values of N-methylformamide(NMF), metabolite of dimethylformamide(DMF) were over biological exposure index(BEI) in 4 of 24 workers. 3. The air concentration of dimethylformamide was over threshold limit values(TLV-TWA) in 1 of 5 workers sampled by personal air sampler. 4. The correlation coefficients between age, working part and the values of liver transaminases were not statistically significant.

국내 카드뮴 취급 사업장의 카드뮴 폭로 실태 평가

강성규,홍정표,김기웅,장재연,정호근,정규철 大韓産業醫學會 1994 대한직업환경의학회지 Vol.6 No.2

Twenty-four factories registered at the Ministry of Labor as factories using or producing cadmium in 1991 were investigated to know the present state of occupational exposure to cadmium in 1992. Nine factories among 24 stopped using or changed to other substances and 1 factory didn't produce any more, but delivered it to other factories through imports. Therefore, only 14 factories were producing or using cadmium. But, alloying materials were supplied to about 20 and more factories, however, they couldn't be investigated because of limited information. Three factories had less than 50 workers were 3,6 had 50-300 and 5 had more than 300. About 167 workers were exposed to cadmium. According to the classification by process, there were 4 alloy processes, 2 refinary, 2 elctroplating, 2 dry cell making, 1 industrial battery making, 1 duplicator drum making, 1 recycling of battery and 1 copper refinary. 8 factories used metal cadmium, 3 cadmium oxide, 2 cadmium sulfide, and 1 cadmium hyroxide. One factory was importing cadmium stearates only and supplying them to the PVC making factories. The amount of metal cadmium producing in 2 refinary factories was about 50-65 ton per month. The other cadmium compounds were imported. According to exposure level of cadmium air of the 10 factories examined, each factory could be divided into high, moderate and low exposure groups. 1 battery recycling factory and 3 alloy factories were in the high exposure group and their mean air concentrations were 0.06679, 0.05481, 0.02492, and 0.003㎎/㎥, respectively. Refinary and industrial battery making factories were in the middle exposure group and their mean air concentrations were 0.00773 and 0.00613 ㎎/㎥, respectively. Finally, low exposure group were copper smelting, dry cell case making, duplicator drum making and electroplating factory and their mean air concentrations were 0.00096, 0.00071, 0.00057 and 0.00054 ㎎/㎥ respectively.

우리나라 카드뮴 폭로 근로자들의 혈중, 요중 카드뮴과 누적폭로 추정량에 따른 신장장해 평가

강성규,양정선,김기웅,장재연,정호근 大韓産業醫學會 1995 대한직업환경의학회지 Vol.7 No.1

88 workers exposed to cadmium were examined at the 12 factories using or producing cadmium in order to know the present state of cadmium exposure and renal dysfunction in 1992. Cadmium in blood and in urine were measured and compared by the 3 exposure level of cadmium in air. Cadmium in blood of low, moderate and high exposure group were 2.5, 3.8 and 7.6 ㎍/L, respectively. Cadmium in urine were 1.8(1.3), 3.8(2.6) and 7.9 ㎍/L(6.1 ㎍/g creatinine), respectively. However, there was no relationship between urinary cadmium and β₂-microglobulin. Cumulative exposure estimate(CEE) was calculated by multiplying the mean ambient cadmium level of the factory and working duration. CEE has a high correlation with cadmium in blood and urine, but no relation to β₂-microglobulin. Because working durations were relatively shorter than European workers', the highest CEE was just 300 ㎍·year/m³, which was not enough to induce renal tubular dysfunction. This study, however, suggested the possibility that renal tubular dysfunction caused by cadmium could be happened in Korea in the near future.