폐기물 성상과 매립방식에 따른 침출수 특성

성낙창,김은호,문추연,김정권,장성호,김수생,박출재 동아대학교 환경문제연구소 1996 硏究報告 Vol.19 No.1

In this study, we can be obtained the following conclusions about the characteristics of leachate with waste compositions and landfill methods. pH shows a tendency to increase in E. landfill, because NH₃ is created by anaerobic degradation and dissolved in leachate. The concentrations of BOD and COD become different, In case of E. landfill, food of combustible is H. & S. landfill and then SS is high in concentration. According to passed time, T-N is high in concentration, but T-P shows a similar tendency. Heavy metals of leachate is lower than threshold concentrations. If leachate is treated biologically, microbes are not inibitory.

노인 인구에서 신경인지기능저하와 혈청 지질농도와의 상관성

유영선,최석주,정성수,김지은,윤성욱,전동욱,백준형,박성우,이정구,추일한,김영훈 大韓神經精神醫學會 2008 신경정신의학 Vol.47 No.6

Objectives : In this study, the authors evaluated the correlation between eurocognitive impairments and serum lipids levels among Korean elderly over the age of 65. Methods : A total of 609 elderly individuals participated in this study. Screening for cognitive impairments were carried out using the Mini-Mental Status Examination-Korean version (MMSE-KC). There were 197 subjects above 1.5SD Of MMSE- KC and they were evaluated using the Korean versions of the Consortium to Establish a Registry for Alzheimer's Disease (AD) (CERAD-KC) and Geriatric Depression Scale (GDS-K). Results : There was a correlation between old age/low levels of education and AD (p<0.05, P<0.01). There was an inverse correlation between the serum level of total cholesterol and the word list recognition test scores. The serum levels of LDL cholesterol were inversely correlated with the scores on the constructional praxis test, word list recall test and word list recognition test. Inverse correlations between the serum level of triglyceride and scores on the word list recall test and word list recognition test were also observed. Conclusion : There were inverse correlations between the serum levels of lipids and language/memory function in subjects with AD.

혈청 감마지티(gamma glutamyl transferase)치와 대사증후군 연관성

장미,유병욱,조용진,오정은,홍성호,조주연 순천향대학교 의학연구소 2008 Journal of Soonchunhyang Medical Science Vol.14 No.1

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감마선투과검사 장치의 자동 원격조작기 개발

주광태,신진성,김동언,송정호,주승환,장홍근 한국비파괴검사학회 2002 한국비파괴검사학회지 Vol.22 No.5

국내 감마선투과검사용 조사장치는 1,000여대로 2,500여명의 종사자가 대부분 수동으로 원격 조작하는 실정으로 작업의 효율화와 방사선피폭 저감화를 위하여 자동 원격조작기의 사용이 요구된다. 이에 연구팀은 실무에 적합한 토크와 안전계수로부터 54kgf·㎝의 출력을 지닌 24V, 200W의 BLDC모터를 이용하여 0.4∼1.2 m/s 범위의 선원 이동속도를 조절할 수 있는 구동장치와 RF 센서로 구동 속도 조절, 광전센서에 의한 선원 위치 및 timer로 노출시간을 제어할 수 있는 무선 원격조작기를 개발하였다. 이와 같이 개발한 자동원격조작기는 AC와 DC 겸용, 그리고 기존의 수동 원격조작기에 탈착이 가능하여 자동과 수동을 겸용할 수 있는 경제적 이점 등으로 활용도가 클 것으로 기대된다. Recently, gamma radiographic equipments have been used about 1,000 sets manually and operated by about 2,500 persons in Korea. In order for a radiography to work effectively with avoiding any hazard of the high level radiation from the source, many field workers have expected developing a wireless automatic remote exposure controller. The KITCO research team has developed an automatic remote exposure controller that can regulate the speed of 0.4∼1.2 m/s by BLDC motor of 24V 200W which has output of 54 kgf·㎝, suitable torque and safety factor for the work. And the developed automatic remote exposure controller can control rpm of motor, pigtail position by photo-sensor and exposure time by timer to RF sensor. Thus, the developed equipment is expected that the unit can be used in many practical applications with benefits in economical advantage to combine the use of both automatic and manual type because attachment is possible existent manual remote exposure controller, AC and DC combined use.

최근 5년간 급성 A형 간염으로 입원한 환자들에 대한 입원 내용 분석

장재영,유병욱,조용진,오정은,홍성호,조주연 순천향대학교 의학연구소 2009 Journal of Soonchunhyang Medical Science Vol.15 No.1

Abstract Background : Due to improvements in Korea's sanitary conditions, antibody rates to the hepatitis A virus is decreasing rapidly and admission due to the disease is increasing, Patients who were admitted for hepatitis A during the last 5 years were selected and yearly differences in admission, clinical picture, medical fees, and differences according to age and gender were analyzed. Methods : Patients who were admitted to the Seoul Soonchunhyang University Hospital during the 5 year period between May of 2003 and April of 2008 and tested positive for IgM anti-HAV were selected and their medical records retrospectively analyzed. Results : 156 subjects [91 male (58%), 65 female (42%) were selected. The average age was 29.2 years (range; 21.4-37), average admission period 12.6 days (range; 12.5-1 7.7) days, and average medical fees 2,295,151 (range; 932,097-3,658,205) KRW(Korean Won), Yearly incidence rates were as follows : 10 for May, 2003 to April, 2004, 14 for May, 2004 to April, 2005, 23 for May, 2005 to April, 2006, 69 for May, 2006 to April, 2007, and 41 for May, 2007 to April, 2008, The maximum value median of AST, ALT, and bilirubin during admission was 989 IU/L, 1999 IU/L, and 5.6 mg/dL each, Each factors were all positively correlated with the patient's age. Conclusions : Recent decrease in antibody positivity of the hepatitis A virus and subsequent surge of acute hepatitis A is a cause of rising socioeconomic costs. A large scale epidemiologic research on whether HAV vaccination should be made mandatory and health insurance applied seems to be needed. Key words : Hepatitis A, Age, Medical fees, Vaccination

혈청 감마지티(gamma glutamyl transferase)치와 대사증후군의 연관성

장미,유병욱,조용진,오정은,홍성호,조주연 순천향의학연구소 2008 Journal of Soonchunhyang Medical Science Vol.14 No.1

Background: Serum gamma glutamyl transferase(GGT) level has been widely used as an index of liver dysfunction and a marker of alcohol intake. But, recently it is identified that the elevated GGT level was associated with insulin resistance. This study aimed to examine the association between metabolic syndrome and elevated GGT level in the women who had less alcoholic influence generally. Methods: From 585 women who received their annual health check-up, 577 women were selected for analysis except for 28 women who had hepatitis B surface antigen positive or antibody to hepatitis C virus positive, Categories of serum GGT were classified into four groups by quartile and then evaluated. Results: A abnormal GGT level(≥52U/L) was seen in 29(5.2%) of the 557 women. As GGT level increased, the prevalence rate of factors(body mass index≥25kg/m2, hypertension, hemoglobin≥14g/dL, total cholesterol≥220mg/dL, triglyceride≥150mg/dL, fasting plasma glucose≥110mg/dL, HDL-choles tero1<50mg/dL) except for hyperuhcemia was increased. The GGT level was correlated with age, body mass index, thglyceride and uric acid in women with fatty liver, but not in women without fatty liver. Factors independently contributing to elevated GGT level was diabetes, hyperthglycehdemia and obesity. Conclusion: The elevated, albeit normal, GGT level was strongly associated with the factors of metabolic syndrome in Korean women. Because measurement of serum GGT level is easy, reliable, and not expensive, it might have more important implication as predictive factor of metabolic syndrome.

Gangliosides are Biomarker Useful for Distinguishing Neuronal Cells Differentiated from Human Mesenchymal Stem Cells

Eun-Jeong Jeong,Jae-Sung Ryu,Jung-Woo Jin,Hyo-Jung Yang,Chin-Hyoung Cho,So-Dam Lee,So-Hyun Lee,Young-Choo Lee,Young-Kug Choo 한국당과학회 2009 한국당과학회 학술대회 Vol.2009 No.1

Recent studies demonstrated that human mesenchymal stem cells (hMSCs) share molecular and cellular characteristics with bone marrow-derived mesenchymal stem cells (MSCs). hMSCs have the potential to differentiate into neural cells. Gangliosides are complex glycophingolipids with one or more sialic acids, the major components of cytoplasmic cell membranes. Numerous studies confirmed that the types of gangliosides and their expression levels are developmentally controlled and cell type-specific. Our recent studies proposed that expression of gangliosides is closely related to neural differentiation of embryonic stem cells in vitro. In this study, we investigated whether hMSCs are capable of differentiating into neural cells, and we analyzed the role of gangliosides in the neuronal differentiation of hMSCs. FACs analysis showed that the established cells have MSC characteristics. The cells did expressed MSC-specific surface antigene (CD44 and CD105), but not the hematopoietic markers CD45 and CD117. Next, hMSCs were differentiated into neuronal cell with induction media for 30h. Neuronal induced cells maintenance with differentiation media for 2weeks. High-performance thin-layer chromatography (HPTLC) showed that gangliosides GM3, GD3 and GD1a expressed in differentiated into neuronal cells for 2weeks, especially GD3 increased comparison to control cell. Immunofluorescence staining also agreed with the results of HPTLC analysis. These differentially expressed gangliosides suggest that gangliosides may have specific functions in stem cell and during neuronal differentiation. Therefore, thess results also suggest that regulation of gangliosides expression have used as differentiation marker of neuronal cell from hMSCs.

Influence of College Students` Gender and Relationship Status on Their Clothing Purchase Process

Eun Kyung Kim,Jung Eun Shin,Ho Jung Choo,Kyu Hye Lee 한국복식학회 2011 International journal of costume and fashion Vol.11 No.1

The purpose of this study is to identify the effects of college students` relationship status on their clothing behavior and purchasing process. The subjects of this study were college students. After a survey 113 questionnaires were used for the data analysis excluding incomplete ones, Factor analysis. paired t-test, Pearson`s correlation, one-way ANOVA. MANOVA and Chi-square test were conducted The data analysis found that female students had higher levels of clothing interest, and fashion-seeking, impulse buying and individuality-seeking motives than male students. Female students who had boyfriends showed particularly higher levels of fashion-seeking and impulse-buying motives. Throughout the clothing purchase process stages, students were most influenced by girlfriend/boyfriend, especially in the evaluation stage. Students who had girlfriends/boyfriends were significantly more influenced by them. Female students were more influenced by parents at the evaluation stage and their female friends at the information search stage.

Newly Recorded Noctuid Pest, Leucapamea askoldis (Lepidoptera: Noctuidae) from Amur Silver Grass, Miscanthus sacchariflorus

Jung, Young Hak,You, Eun Ju,Ahn, Jong-Woong,Park, Jung-Joon,Choo, Young- Moo,Choo, Ho Yul,Lee, Dong Woon The Korean Society of Weed ScienceThe Turfgrass So 2017 Weed & Turfgrass Science Vol.6 No.4

Amur silver grass, Miscanthus sacchariflorus is one of the promising biofuel weeds. A damage of noctuid pest, Leucapamea askoldis was firstly observed from Amur silver grass in Hwasun silver grass plantation during the survey of insect pests of Amur silver grass in Iksan, Hwasun, and Sancheong plantation areas in Korea. The host of L. askoldis was not known yet in Korea. The L. askoldis damage was observed as larval feeding on newly grown shoots and roots of M. sacchariflorus close to soil surface from early May in 2013. Investigated larval density was $1.6{\pm}1.1per\;m^2$ on April 4 and damage rate of shoots was $0.8{\pm}0.4%$ on May 4, 2013. The larvae bore into shoots of M. sacchariflorus and feed on the inside of plant. The damaged shoots are easily pulled out and distinguished by the boring hole on the shoots. L. askoldis was potential insect pest in M. sacchariflorus plantation areas.

Anethole Exerts Antimetatstaic Activity <i>via</i> Inhibition of Matrix Metalloproteinase 2/9 and AKT/Mitogen-Activated Kinase/Nuclear Factor Kappa B Signaling Pathways

Choo, Eun Jeong,Rhee, Yun-Hee,Jeong, Soo-Jin,Lee, Hyo-Jung,Kim, Hyun Seok,Ko, Hyun Suk,Kim, Ji-Hyun,Kwon, Tae-Rin,Jung, Ji Hoon,Kim, Jin Hyoung,Lee, Hyo-Jeong,Lee, Eun-Ok,Kim, Dae Keun,Chen, Chang-Yan Pharmaceutical Society of Japan 2011 BIOLOGICAL & PHARMACEUTICAL BULLETIN Vol.34 No.1

<P>Anethole is known to possess anti-inflammatory and anti-tumor activities and to be a main constituent of fennel, anise, and camphor. In the present study, we evaluated anti-metastatic and apoptotic effects of anethole on highly-metastatic HT-1080 human fibrosarcoma tumor cells. Despite weak cytotoxicity against HT-1080 cells, anethole inhibited the adhesion to Matrigel and invasion of HT-1080 cells in a dose-dependent manner. Anethole was also able to down-regulate the expression of matrix metalloproteinase (MMP)-2 and -9 and up-regulate the gene expression of tissue inhibitor of metalloproteinase (TIMP)-1. The similar inhibitory effect of anethole on MMP-2 and -9 activities was confirmed by zymography assay. Furthermore, anethole significantly decreased mRNA expression of urokinase plasminogen activator (uPA), but not uPA receptor (uPAR). In addition, anethole suppressed the phosphorylation of AKT, extracellular signal-regulated kinase (ERK), p38 and nuclear transcription factor kappa B (NF-κB) in HT-1080 cells. Taken together, our findings indicate that anethole is a potent anti-metastatic drug that functions through inhibiting MMP-2/9 and AKT/mitogen-activated protein kinase (MAPK)/NF-κB signal transducers.</P>