甘草엑스의 抗炎 및 抗潰瘍作用에 대한 機轉

殷載淳,崔東晟,全焄,安文生 又石大學校 1989 論文集 Vol.11 No.-

Glycyrrhizae radix, commonly called licorice, has been used as anti-ulcerous and anti-inflammatory agents. It's main component, glycyrrhizin, is known to be effective as an anti-allergenic, anti-hepatic, and anti-viral agent, and shows steroid-like action. Histamine mediates and modulates inflammation through a variety of immuno-regulatory actions and stress-induced secretion of glucocorticoids(GC) is generally mediated by release of ACTH from the pituitary gland. This study was to investigate the mechanism of Glycyrrhizae Radix Ext. on anti-inflammatory and anti-ulcerous action. 1. The serum histamine contents was the most increased at the dose of 25㎍/㎏ LPS. injected rats(i.p), and the serum corticosterone was not significant. 2. Pretreatment of Glycyrrhizae radix Ext. (150㎎/㎏) was markedly decreasing the levels of serum histamine and corticosterone. 3. The serum histamine content was significantly increased in 120 minutes after LPS. injection. 4. The serum histamine content was decreased by pretreatment of cimetidine (H^2- receptor antagonist) 5㎎/㎏. These results were suggested that the effects of Glycyrrhizae Radix Ext, on anti-inflammatory and anti-ulcerous action was induced by its glucocorticoid-like action and inhibition of the histamine realese via H_2-receptor.

비중격 천공이 없는 크롬 노출 근로자에서의 후각장해에 관한 연구

최재욱,이성희,최연국,이은일,김해준 대한산업의학회 2000 대한직업환경의학회지 Vol.12 No.2

Objectives : The chrome-induced olfactory alterations is caused by inhalation of chromic acid, a highly corrossive and toxic materials. And nasal septum perforation (NSP) has been suspected with possible causative factor of olfactory alterations. To our knowledge, there has been no report of the detailed findings of the olfactory alterations in chrome exposed subjects without nasal septum perforation (NSP). So we present the results of olfactory function test measured by T&T olfactometer and olfactometer perception test among chromium exposed workers without NSP. Methods : We performed this study in 25 study subjects and 25 control subjects matched with age, alcohol and smoking. All of subjects are man. We performed olfactory function test measured by T&T olfactometer and olfactometer perception test. Results : 1) The age distribution of the subjects involved in this study was from 20 to 54 years old (average 33.3 years old) and the mean duration exposed to chromium was from 64.9 months. 2) The olfactory function was checked by detection and recognition thresholds in five odorants. The detection thresholds of exposed group dealing with chromium were significantly increased in A and B ordorants than nonexposed group. The recognition thresholds of exposed group were significantly increased in D ordorants than nonexposed group. 3) The mean threshold of olfactometer perception test of exposed group were more increased than nonexposed group. But thresholds difference did not show statistical significance. 4) The detection thresholds of A and D ordorants, recognition threshold of C ordorants and thresholds of olfactometer perception test were increased in the relation with duration of chrome exposure. Conclusions : There has been no remarkable alterations in olfactory sense (T&T olfactometer and Olfactometer Perception Test) in subjects without nasal septum perforation (NSP) exposed to chromic acid.

밀레니엄 광고세대의 커리어 행로(carrer path)에 관한 문헌연구

최은하,김재영 남서울대학교 2004 남서울대학교 논문집 Vol.10 No.1

This paper aims at study of the career path that is the most important decision factor of millennium generation's lifestyle. Because millennium generation will be new market indicator, of 21 century. For this study, this paper is based on generation Gap that is dealt with all social science. Where Traditionalists seek to build lifetime careers, Boomers to build stellar careers, and Xers to build portable careers, the career path ClashPoint for Millennials will be around parallel careers. Millennials' programmed live have made them true multitaskers. Millennials are already quite capable of learning several jobs simultaneously and performing them admirably. Millennials are throwing out the old model that you're either a waitress, a hostess, or running the register. In a tight labor market, making sure scarce Millennials can cover more than one position is a smart strategy. In a contracting economy, it's cost-effective to put Millennials' multitasking abilities to use rather than hire more employees. Plus, cross-training is a great retention strategy, which reduces the expense of turnover. Futurists predict that Millennials will experience as many as ten career changes in their lifetimes. That's career changes, not job changes-meaning they will recycle their skills and talents and personal preferences into new application again and again and again. Throughout their careers, this generation will be ready, willing, and able to adapt to an organization's evolving structure.

租稅에 의한 所得再分配效果의 有效性

崔壬煥,李載殷 成均館大學校 韓國産業硏究所 1981 韓國經濟 Vol.9 No.-

초등학생들의 열과 온도에 대한 대안개념 조사

최행숙,김은경,백성혜,이길재,정완호 한국교원대학교 과학교육연구소 2001 청람과학교육연구논총 Vol.11 No.1

In this study, the contents of elementary school science textbooks related to 'heat and temperature' are analyzed and alternative conceptions of "heat and temperature" among students enrolled in grades 4, 5 and 6 are investigated. 259 students were selected from a elementary school located in urban area. The relationships between students' alternative conceptions and the content of elementary science textbooks are also examined. Students' conceptions are analyzed from their answers to a paper-and-pencil test. The typical alternative conception of "heat and temperature" held by students was follows. They think that "heat" is a material and "temperature" is value of heat amount. They can't distinguish between "heat" and "temperature". Their explanation of "heat and temperature" is focused on hot or cool sensation and other observable characteristics of a material. A textbook analysis indicated that contents on "heat and temperature" were organized without the viewpoint of particle motion theory. This may be one of the causes of students' alternative conceptions.

LPE법으로 작성한 Bi₂Sr₂Ca_(1-x)Nd_(x)Cu₂O_(8+δ) 막(film)의 초전도특성 및 터널링 분광

최은영,신재수 대전대학교 기초과학연구소 2003 自然科學 Vol.14 No.1

LPE(Liquid Phase Epitaxial)법을 이용 Bi_2Sr_2Ca_(1-χ)ND_χCu_2O_8+ε 막(film)을 작성하여 초전도특성을 알아보았고, Break junction법을 이용 터널링 분광 측정을 통하여 에너지 간격(gap) 2△의 변화를 조사하였다. 융액(melt)속 Nd 조성비 (χ_(L))의 증가에 따라, 임계온도 Tc^on과 격자상수 c 등은 감소를 보였으며, Cu2p의 main peak가 낮은 결합에너지쪽으로 shift하였다. 이러한 변화들은 Nd의 치환에 따른 Cu-O면의 hole이 감소함에 의한 영향이라 생각된다. 또한, Nd 조성비(χ_(L))의 증가에 따라 에너지 간격(gap) 2△과 2△/kbTc^2ero의 값은 증가를 보였다. Tunneling Spectroscopy measurements were performed on the Nd substituted Bi_2Sr_2CaCu_2O_8+δ system prepared by liquid phase epitaxial method. The lattice constant c and onset critical temperature Tc^on decreased with increase of χ_(L) almost the same as in sintered samples. Negative chemical shifts of the Cu 2p main peaks were obtained. These behaviors indicate that the holes at both the Cu and O sife decrease with increasing Nd concentration. The energy gap 2Δ and 2Δ/k_BTc^on increased with increase of χ_(L).

간흡충 감염증의 진단에서 피내반응 검사의 유용성 검토

최재철,오승환,정해진,신정환,박기형,이은엽,장철훈 대한임상미샐물학회 2003 Annals of clinical microbiology Vol.6 No.2

UV 센서를 위한 Spiroxazine LB 단분자막 특성에 대한 연구

최성욱,박은진,장지훈,김재호,강신원 경북대학교 센서기술연구소 2002 센서技術學術大會論文集 Vol.13 No.1

종강의 크기가 생강의 생육 및 수량에 미치는 영향

최재을,김정선,이은정 충남대학교 농업과학연구소 1998 농업과학연구 Vol.25 No.1

This study was investigated to find out the optimum rhizome size of ginger characteristics and yield at two planting densities. Seventy five gram of rhizome gave best performance for plant height and yield with comparison with the other sizes at two planting densities. Among 25g, 50g and 75g of ginger rhizome size were not significantly different in plant height and yield at 30×30cm planting density. But, 25g of rhizome size is economically recommended at 30×30cm planting densities.

담도 및 췌장 악성종양에서의 CAl9-9의 진단적 가치에 대한 평가

명승재,최승목,김은옥,최호순,이성구,김명환,민영일,류진숙 大韓消化器病學會 1995 大韓消化器病學會誌 Vol.27 No.3