생물 세척기에 의한 유기성 폐 gas의 처리

林警澤,高京淑 동아대학교 환경문제연구소 1993 硏究報告 Vol.16 No.2

본 연구는 활성 슬러지를 이용한 Toluene 함유 gas의 생물학적 처리에 관한 연구로서 경제적이고도 효율적 처리 기술인 충진상 생물막 반응장치의 효율에 대하여 검토하였다. 산업현장에서 발생되는 유기 gas중 toluene을 제거하는 인자로서 가스 농도, 미생물에 대한 가스부하, 온도 및 기액비 등의 변화에 대하여 가스 제거효율을 측정하였다. 실험 결과는 다음과 같다. 1. 톨루엔의 생물학적 처리가능성을 확인하였다. 2. 초기농도가 증가할수록 적응기간도 길어졌다. 3. MLSS 3400㎎/ℓ 톨루엔농도 150ppm에 있어서 제거효율은 92% 이상이었다. 4. 톨루엔의 생물학적 제거를 위한 최적온도는 35℃임을 확인하였다. 5. 톨루엔의 제거에 대한 기액비의 영향은 거의 없었다. This investigation is carried out to study the biodegradation of toluene in gases using mixed microorganisms. The bioscrubber used to eliminate organic pollutants in waste gases is economical and efficient treament technique. Gas removal efficiency according to the variation of inlet gas concentration, gas load per unit biomass, temperature and gasliguid ratio has been measured. The results show as follows : 1. It is confirmed that toluene gas can be treated biologically by activated sludge. 2. The larger the initial concentration of toluene is, the longer the acclimation period of sludge shows. 3. At the loading level of less than 150ppm toluene per 3400㎎/l MLSS, removal efficiency is excellent, which is greater than 92%. 4. Optimum temperature of toluene removal is 35℃.

VOCs의 光觸媒處理에 관한 硏究

임경택,김춘희,고경숙,배병훈,문종익 동아대학교 환경문제연구소 1997 硏究報告 Vol.20 No.2

This study has been carried out to observe photodegradation efficieny of TCE with the variation of IN irradiation strength, liquid thickness and immobilized TiO₂. The results are summarized as fallows; 1. Without photocatalyst, the TCE removal efficiency was observed to be about 15% with UV irradiation. 2. Above 93% of TCE were mineralized by immobilized TiO₂on glass panel(5g, 500℃) and UV irradiation. The photodegradation efficiency increased with increasing UV lamp numbers and reaction rate increased with increasing TCE initial concentration. 3. The photodegradation efficiency decreased with increasing the liquid thickness and above 96% of TCE were removed with using 3 UV lamps and liquid thickness less than 6cm.

獨逸株式法上 個別理事의 責任과 自身의 法的地位形成에의 影響力

徐庚林,宋錫彦 濟州大學校 地域社會發展硏究所 1994 社會發展硏究 Vol.10 No.-

病院 地下空間內의 空氣中 微生物分布에 관한 硏究

박천제,배병훈,고경숙,김춘희,임경택 동아대학교 환경문제연구소 1998 硏究報告 Vol.21 No.1

This study was carried out to investigate the distribution and concentration of microorganism by the method of the air contamination using RCS air sampler in underground linac room of two general hospital located in Pusan. The places of air sampling were 4 different spot in two each hopital. Therefore, total 8 places were sampled from June 30, 1996 to May30, 1997. The results obtained were as follows 1. In a agar strip GK-A media for total count of microbial particles, it was estimated to be 76 CFU/ft^(3) in ICR room, and the consulting room was 53 CFU/ft^(3), lobby was XI CFU/ft^(3), linac room was 35 CFU/ft^(3), in the M hospital, respectively. The distribution of organism in the air of M hospital were shown gram positive cocci 72%, gram negative bacilli 15%, gram positive bacilli 6.1%, fungi 6.1%, respectively . On the other hand, in P hospital, it was obtained to be ICR room 74 CFU/ft^(3), lobby- 45 CFU/ft^(3), consulting room 34 CFU/ft^(3), linac room 31 CFU/ft^(3), respectively. The distribution and concentration of microorganism in the air were detected gram positive cocci 75%, fungi 10.3%, gram negative bacilli 8.7%, gram positive bacilli 6.0%. respectively. The results were recognized to be a low frequency in the linac room. 2. In agar strip S media for total counts of M hospital, ICR room was shown the highest organism with 32 CFU/ft^(3), but the lowest organism was detected linac room with 20 CFU/ft^(3). Also, the case of P hospital was estimated high 43 CFU/ft^(3) at ICR room, low organism was shown at linac 17 CFU/ft^(3) Test of coagulase were recognized to be a negative Staphylococci 68.3% in M hospital, 60.7% in P hospital. Coagulase positive cocci was estimated to be 31.7% in M hospital, 39.3% in P hospital. 3. In agar strip C media for coliform bacteria, colony counts at ICR room 10 CFU/ft^(3), consulting room 7 CFU/ft^(3), linac room 6 CFU/ft^(3), lobby 4 CFU/ft^(3) in M hospital, respectively. On the other hand, in P hospital were shown ICR room and main lobby 7 CFU/ft^(3), consulting room 5 CFU/ft^(3), linac room 4 CFU/ft^(3), respectively.

박정희 시대를 보는 눈

임경석(Lim Kyong-suk) 한국역사연구회 2009 역사와 현실 Vol.- No.74

Promises and Risks of Unsaturated Volatile Organic Compounds

Kyong-Suk Jin,Mira Jun,Min-Ji,Seon Ok,Jae-Han Jeong,Hye-Sook Kang,Wan-Keun Jo,Ho-Jin Lim,Woo-Sik Jeong 한국식품과학회 2008 Food Science and Biotechnology Vol.17 No.3

Limonene, pinene, and isoprene are abundant and ubiquitous volatile organic compounds (VOCs) which are found in various natural products and also produced from various manufacture processes. Limonene and pinene are major components of food additives and household products for enrichment of good flavors and elimination of malodors, and isoprene is a basal motif of monoterpenes such as limonene and pinene. They have shown many beneficial effects such as chemopreventive, chemotherapeutic, and antioxidant activities. Upon certain conditions, however, adverse effects of these compounds on human health have also been reported. Although they do not seem to have acute and severe toxicity to human, they can easily generate secondary organic aerosols (SOAs) when they react with oxygen and/or ozone, which have shown certain toxic effects on experimental animal models as well as on humans. Numerous household and scented products containing limonene, pinene, and isoprene are widely used in these days. However, biological consequences upon exposure to these products are largely unknown. The aim of this review is to summarize and analyze the current understanding on the biological effects of VOCs, in particular limonene, pinene, and isoprene, as well as their SOAs.

임상간호사의 전문직관과 조직몰입과의 관계

임향숙,오경옥 충남대학교 간호과학연구소 1999 충남대 간호학술지 Vol.2 No.1

The purpose of this study was to identify the relationship between views on profession and organizational commitment. The sample for the study consisted of 268 nurses of two University Hospitals in Taejon & Cheongju. Data collection period was from March 3,1998 to March 11,1998. The tools used for this study were composed of General characteristics^ items), Views on profession(33 items), Organizational commitment (15 items). The data was analyzed by using an SAS program and included frequency, percentage, mean, t-test, ANOVA, Pearson correlation coefficient, Multiple regression. the finding were as follows: 1. The mean score of views on profession was 3.357, organizational commitment was 2.284 on a 5 point Likert scale. 2. General characteristics were showed significant difference in views on profession: age(F=3.37 p=.013), position(F=4.34 p=.014), marital status(t=3.58 p=.000). 3. General characteristics were showed significant difference in organizational commitmnt: age(F=9.87 p=.000), education level(F=7.00 p=.ooo), position(F=20.52 p=.000), working experience(F=8.68 P=.000), marital status (t=3.86 p=.000), religion(F=2.50 p=.043). 4. General characteristics were statistically significantly correlated with views on profession:age(r=0.165 p=.006), position(r=0.172 p=.004), marital status(r=0.214 p=.000). 5. General characteristics were statistically significantly correlated with organizational commitment: age ( r = 0.236 p = .000), position (r = 0.359 p = .000), working experience(r=0.218 p=.000), marital status(r=0.230 p=.000). 6. There was a positive relationship between views on profession and organizational commitment(r=.554 p=.000). Based on the study results, the following recommendation are made: 1) Future research will be promoted valid and reliable tool development. 2) A future study is necessary to develop other variable which positively influence.

후두 편평세포암종에서 Cyclooxygenase 1과 2의 발현

김경환,조강한,이규석,임도형,백상흠,양훈식,홍영호,김미경 대한이비인후과학회 2001 대한이비인후과학회지 두경부외과학 Vol.44 No.9

검체별 세균 검사 방법 및 분리균의 생화학적 동정

임시근,이정숙,이경룡,이영애,서지석,최상규 내무부 국립과학수사연구소 2000 國立科學搜査硏究所年報 Vol.32 No.-

Changes in the Isozyme Composition of Antioxidant Enzymes in Response to Aminotriazole in Leaves of Arabidopsis thaliana

Kyong-Suk Kang,Chang-Jin Lim,Tae-Jin Han,Joon-Chul Kim,Chang-Duck Jin 강원대학교 기초과학연구소 1999 기초과학연구 Vol.10 No.-

The changes in isozyme profiles of catalase (CAT), peroxidase (POD), ascorbate peroxidase (APX), and glutathione reductase(GR) during severe deactivation of total CAT activity by aminotriazole (AT) treatment were investigated in the leaves of Arabidopsis thaliana (Columbia ecolype) in relation to H₂O₂-mediated oxidative stress. In spite of striking deactivation of total CAT activity by 0.1 mM AT, there were no significant differences in H₂O₂levels or total leaf soluble protein contents including a Rubisco in both the control and AT-treated leaves. On the other hand, one specific protein band (molecular mass, 66 kD) was observed on the SDS-gel from leaf soluble proteins whose staining intensity was strikingly enhanced by AT treatment for 6 h. However, this band disappeared at 12 h. In the native-gel assays of CAT, POD, APX and GR isozymes, AT remarkably inhibited the expression of the CAT1 isozyme with no effects on CAT2 and CAT3, and generally had no effect on POD isozyme profiles. However, AT stmulated the intensity of activities of pre-existing APX1 and GR1 isozymes. In particular, it induced a new synthesis of one GR isozyme. Therefore, these results collectively suggest that a striking deactivation of total CAT activity by AT in A. thaliana leaves largely results from the suppression of CAT1 isozyme, and that APX1, GR1, and a newly syntheszed GR isozyme could complement the role of CAT1 to metabolize H₂O₂into non-toxic water.