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이순복,조태순,윤기욱,이종찬,이선미,심성보 성균관대학교 약학연구소 1998 成均藥硏論文集 Vol.10 No.1
The dose-response effect of polysaccharide extracts(PS-1) from Artemisia iwayomogi was investigated under various hepatic disease models. Silymarin, DDB and UDCA were used as reference compounds. We found that the maximal effective dose of PS-1 was 100 ㎎/㎏ b.wt. in CCl_4-induced hepatotoxicity, D-galactosamine-induced hepatitis, in ANIT-induced cholestasis and 300 ㎎/㎏ b.wt. in CCl_4-induced chronic liver disease, 30 ㎎/㎏ b.wt. in chronic bile duct ligation and chronic ethanol fatty liver. These findings suggest that PS-1 fraction protects the hepatocyte against various hepatic injuries, and this fracton might be of therapeutic value.
일할 수밖에 없는 여성노인의 다중차별 경험에 관한 연구
정순둘,장명선,이은진,송보가,김재민 이화여자대학교 젠더법학연구소 2021 이화젠더법학 Vol.13 No.2
본 연구는 노동시장에서 일할 수밖에 없는 여성노인의 다중차별 경험을 파악하여 이들의 노동권을 보호하고 차별을 해소하기 위한 방안을 마련하는데 목적이 있다. 이를 위해 노인집중 고용 업종에 종사하는 60세 이상 여성노인 14명을 대상으로 심층면접조사를 진행하였다. 본 연구 결과, 일할 수밖에 없는 여성노인들은 노동시장의 입직 단계에서부터 성별, 연령, 건강의 다중차별에 의한 상시적인 고용불안과 사회안전망에서의 배제를 경험하였다. 또한 일하는 조직의 불평등 지배체제 특성으로 일상화된 고용불안, 열악한 노동조건과 복지제도의 미비, 노인친화적이지 않은 노동 강도와 근무 제공, 노인 노동 평가 절하에 따른 조직 위계 문화와 관행, 과도한 노동 제공의 요구와 성희롱의 일상화, 조직 내에서 이해를 대변하는 데 어려움을 경험하는 것으로 나타났다. 본 연구 결과를 바탕으로 일할 수밖에 없는 여성노인의 다중차별을 해소하기 위한 법과 제도의 개선, 사회안전망 강화, 여성노인 노동자 이해대변단체 조직화 지원을 제언하였다. This study aims to (i) identify the experience of multiple discrimination among older women, who have no choice but to work in the labor market; (ii) protect their labor rights; and (iii) resolve discrimination. To conduct this study, we performed an in-depth interview survey with 14 older women aged 60 or older who are engaged in the elderly intensive employment sector. Under the result of this study, older women, who have no choice but to work, have experienced constant employment insecurity and exclusion from the social safety net due to multiple discrimination in gender, age, and health from the employment stage in the labor market. In addition, because of inequality organizations, they have experienced as follows: employment insecurity that became common, poor labor conditions and inadequate welfare systems, unfriendly labor intensity and provision of work, organizational hierarchical culture and practices due to devaluation of elderly labor, demand for excessive labor provision and sexual harassment routinely, and difficulties in representing understanding within the organization. Based on the results of this study, therefore, this study provides suggestions to resolve the multiple discrimination of older women, who have no choice but to work, including but no limited to, improve laws and systems, strengthen the social safety net, and organize support for the organization of interest groups for older women workers.
이경희,유위량,한현석,부진효,이순보,곽현태 성균관대학교 기초과학연구소 1998 論文集 Vol.49 No.-
The interaction of CO with W(110) surface was investigated through LEED, TDS, and photoelectron spectroscopy using synchrotron radiation under UHV condition. After CO saturation at RT, two desorption states, called α and β , were observed at about 400 and 1150 K in thermal desorption spectra, respectively. The kinetics of 3-CO followed the first order kinetics, indicating the existence of molecular CO on W(110) surface. This is contrary to the previous results. The O 1s BE(binding energy) of CO adsorbed on W(110) surface at room temperature was 529.9 eV. On the other hand, the O 1s BE of β-CO after heating to 900 K was different from that of oxygen adsorbed W(110) surface, suggesting a different adsorption state. According to the UP valence band spectra, we observed two peaks at near -10.7 eV (4σ) and -7.0 eV (5σ+1π), indicating the molecular adsorption of CO at room temperature. Furthermore we could see the 4σ peak at the various photon energy and elevated temperatures. Comparing the energy separation, Δ(4σ-1π) , between 4σ and 1π UP peaks of chemisorbed CO, we found that an increased separation reflects an decreased C-O bond strength. Therefore on the basis of TDS and photoelectron spectroscopy, we could suggest that β state of CO on W(110) may not be dissociated and has an adsorption geometry of lying-down mode.
열탈착 분석법에 의한 Pt(111) 표면위의 NO와 CO의 흡착
이순보,박종윤,곽현태,부진효,강용철 성균관대학교 1992 論文集 Vol.42 No.2
The adsorptions of nitric oxide and carbon monoxide on Pt(111) surfaces have been studied by using LEED, AES, and TDS(Thermal Desorption spectroscopy). The adsorbed species of NO is predominantly molecular on the Pt(111) surface at room temperature. A main desorption peak of TDS is attributed to the molecular adsorption at 360K. With increasing No exposures, a shoulder peak at 480K which may be attributed to the defect site adsorption is appeared. The desorption rate order for No desorption is 1st order and the desorption energy for NO calculated by Redhead equation assuming pre-exponential factor v_1=10^13 sec^-1 is 21.7Kcal/mol. The adsorption of carbon monoxide is also molecular on Pt(111) surface at room temperature. The TDS results showed only a single broad peak at 460K, which is attributed to molecular adsorption. The desorption order for CO desorption is 1st order as well as NO and the desorption energy for CO is 28Kcal/mol.
Ar 이온에 의해 Sputtering된 Pt(111) 표면의 NO 흡착
이순보,부진효,이성용,박종윤,곽현태 성균관대학교 기초과학연구소 1992 論文集 Vol.43 No.1
Adsorption of nitric oxide on the Pt(111) surface sputtered by Ar-ion has been studied using thermal desorption spectroscopy, Auger electron spectroscopy, and low energy electron diffraction. A thermal desorption spectrum obtained from the perfect Pt(111) saturated with NO at 300K is quite simillar to those reported previously. The main portion desorbs at about 370K(α-state) with a shoulder at about 470K(β-state). The chemisorption of nitric oxide is predominantly molecular on the Pt(111) surface, accompanied by a small amount of dissociation which becomes negligible when the Pt(111) surface is perfect. When the Pt(111) surface is sputtered by Ar-ion with 2KeV, the thermal desorption spectrum becomes quite complex. The shoulder peak, which appears on the perfect surface spectrum, increases with Ar-ion sputtering time. The maximum desorption spectra of N₂ and N₂O are observed simultaneously between 470 and 600K. The desorption mechanisms for N₂O are proposed. The increasing N₂ with the β-state of NO indicates that the β-state is a precursor to the NO dissociation.
李淳甫,이순영,부진효 성균관대학교 기초과학연구소 1985 論文集 Vol.36 No.2
The chemisorption properties of CO on polycrystalline Ni surface are studied by XPS at 150K, 300K and 400K. The CO are adsorbed only molecularly at lower temperature than room-temperature having a adsorption energy of about 87KJ/mol. At 400K, the CO are dissociated, so that the carbon remains as 'carbidic' carbon on the surface, which is stable at lower temperature about 620K, and above this temperature it is transformed to graphite. On the other hand, atomic oxygen species on the surface may be reduced by CO in gas phase. A possible mechanism for the formation of 'carbidic' carbon is proporsed.