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치위생과 학생들의 B형 간염 바이러스의 표지자와 인지도에 관한 연구
강은주,신상희,장선희 韓國學校保健學會 2002 韓國學校保健學會誌 Vol.15 No.2
This study is aimed at offering basic data about prevention of Hepatitis B virus and infection control to dental hygiene students who will work mostly at dental offices which are characteristically exposed to a high risk of HBV infection. For this study, surveyed were 188 sophomores and juniors of the dental hygiene department who volunteered to undergo the tests of HBsAg and HBsAb. The examination of the blood collected from the samples and analysis of their perception about hygiene resulted in following conclusion: Positive HBsAg Four was found in 4 testees(2.1%) while 118(62.8%) revealed positive. HBsAb. Juniors showed higher positive rate in HBsAb whereas sophomores had higher positive rate in HBsAb. But such difference has statistically no significance. Generally, students seemed to pay little attention to HBV, judging from the survey of their perception about the present state of HBsAb and HBsAb(p>0.05), conduct of infection(p<0.05), completion of 3 requested vaccination(p>0.05), and formation of antibody(p>0.05). With regard to the infection routes of HBV, most students(92.4%) replied "through blood", which is statistically insignificant, though. Next ratio goes to the reply "through contaminated injectors". This reply came more from sophomores than from juniors, a difference which is statistically significant(p<0.05). The lowest rate of possible infection(29.2%) was thought to be "through breast-feeding of a positive mother"(p<0.05). In general, it turned out that sophomores had more knowledge about the infection routes of HBV than juniors. In terms of clinical history among family members, 6(3.1%) reported that some of their family members are currently suffering from a liver complaint, 3(1.6%) replied their family members were once afflicted, and 4(2.1%) said their members died of hepatitis. Except 10(4.7%), all the surveyees replied that their states of health are better than normal. Generally, sophomores are healthier than juniors except for very health case, a difference which is statistically of no value.
14각형 헥사아자 거대고리 구리(II)착물과 음이온의 반응에 미치는 리간드의 치환기 효과
姜信杰,李成得성득,權在槿,鄭守炅 大邱大學校附設 基礎科學硏究所 1991 基礎科學硏究 Vol.8 No.-
Reactions of copper(In complexes of 1, 8-dimethyl-, 1, 8-diethyl-, and 1, 8-dipropyl-1, 3, 6, 8, 11, 13-hexaazacyclotertradecanes(A, B, and C, respectively) with halide and pseudohalide ions have been studied in aqueous solutions by spectrophotometric method. It is observed that the equilibrium constants(K) of these reactions decrease with the ligand structure in the order A> B>C for anions and decrase with the anions in the order SCN^(-)>N_(3)^(-)>Br^(-)>Cl^(-) for complexes. The values of K increased with increasing temperature. Thermodynamic parameters obtained from the equilibrium constants are investigated.
강대우,이신,김상욱 東亞大學校 建設技術硏究所 2005 硏究論文集 Vol.28 No.2
발파로 인한 환경적 문제는 주로 진동과 폭음에 대한 영향이나, 발파로 인한 파쇄도 및 경제성에 관해서도 효율적인 발파공법들이 많이 개발되고 있다. 이러한 문제를 해결하기 위한 방법으로 선진국에서 많이 사용되는 방법이 air decking을 이용하는 발파방법이다. 이미 선진국의 발파현장에서는 air decking 기술을 이용한 다양한 발파방법으로 VARI-STEM, GAS-BAG, POWER DECK 등이 이용되어지고 있다. 본 연구에서는 이들 중에서 Air ball 제품을 이용한 발파공법에 대하여 연구하고 국내 현장적용과 효과에 대하여 분석하였다. 그 결과 발파진동의 경우에는 약 30 ~ 40% 정도의 감쇄효과가 나타났고, 화약량의 경우 20 ~ 25%정도의 감소를 보였다. 또한 폭음의 경우에도 Air ball을 이용한 발파가 효과적이었으나 분석결과의 결정계수가 낮아 이는 더 많은 실험을 통하여 다시 분석해야 할 것으로 생각된다.
姜信珠,李惠成 慶北大學校 師範大學 1977 敎育硏究誌 Vol.19 No.-
26 plant specimens which have been used for edible vegetables in our daily-life were extracted with the both, distilled water and 95% ethanol in a water bath at 60℃ for four hours. And the plant extracts were tested by screening method for their antibiotic activities against the microorganisms, Escherichia. colt OⅢ and Staphylococcus aureus 209p. The results were as follows; 1. Of 26 plant specimens, 13 specimens, Allium fistulosum, Allium scorodoprasum, Chrysanthemum coronarium, Spinacea oleracea, Perilla ocymoides, Cucurbita moschata, Capsicum longum, Daucus carota var. saliva, Arctium edule, Cucumis sativus, Brassica oleracea, Raphanus sativus and Capsella brusa-pastoris, have antibiotic activity. 2. Of 13 specimens described above, Allium fistulosum, Allium scorodoprasum, Spinacea oleracea and Cucurbita moschata have strong antibiotic activity and Perilla ocymoides, Daucus carota var. sativa and Capsella brusa-pastoris have a moderate degree of antibotic activity. 3. There is almost no difference between the extracts of distilled water and those of 95% ethanol in antibiotic activity.
신민식,강성미 慶北大學校出版部 2004 經商論集 Vol.32 No.1
Based on psychological evidences, which show that weather affects mood, and this could also affect decision-making, we analyzed correlations between cloud cover and the daily composite index within Seoul, Daejeon, Daegu, Gwangju, Busan which are representative cities from Korea. Evidence demonstrates the following. First, analysis supports the correlation between cloud cover data and the daily composite index and shows that cloud cover affects stock returns negatively except for those in Daejeon. Second, we study the correlation between cloud cover of days when it has no rain and the daily composite index shows that Gwangju is not positive anymore. It has reverse effects particularly for Daejoen, as the data indicates opposite results. Third, the correlation between new cloud cover figures are weighted with GRDP data and the daily composite index show that cloud cover is significantly correlated with negative stock returns.
환경 인쇄물 기반 어휘 활동이 초등학교 영어 학습자의 어휘 학습 결과와 정의적 태도에 미치는 영향
강은정,신상근 이화여자대학교 교과교육연구소 2017 교과교육학연구 Vol.21 No.5
This study investigates the effects of environmental prints on vocabulary learning of Korean Elementary School English language learners and their perspectives on vocabulary learning. The participants were 107 elementary school students in Kyunggi province, and they were divided into two groups. The students in both groups participated in vocabulary learning activities based on different materials, which were environmental prints and photos, respectively. The results of the post-test and delayed post-test showed that the students in the environmental prints group learned significantly more vocabulary items than the students in the photos group. The analyses of the students’ responses to the questionnaire revealed that the environmental print group had shown significant progress in interests and confidence in vocabulary learning. The results also showed that the students believed that they may be able to use the target words in their lives, indicating that environmental prints enhanced the situational authenticity of vocabulary instruction. These results suggest that environmental prints are useful instructional materials for vocabulary teaching in elementary school English instruction. 본 연구의 목적은 환경 인쇄물을 활용한 어휘 학습 활동이 초등학교 영어 학습자의 어휘 학습 결과와 어휘 학습에 대한 태도에 미치는 영향을 알아보는 데 있다. 환경 인쇄물은 학습자가 실생활에서 쉽게 접할 수 있고 목표 어휘에 대한 맥락을 제공하며 학습자의 학습동기를 높일 수 있어서 모국어 교육에서는 많이 활용되지만 제2 언어 어휘 교육에서는 상대적으로 많이 활용되지 않고 있는 실정이다. 본 연구는 환경 인쇄물이 영어를 외국어로 배우는 환경에서 초등학교 어휘 학습에 유용한 교수 자료인지 알아보고자 한다. 이를 위하여 본 연구에서는 초등학교 6학년 학습자를 대상으로 초등학교 어휘 교수에서 많이 사용되고 있는 사진 자료를 사용해서 어휘를 학습한 집단과 환경 인쇄물을 활용한 어휘 학습 집단으로 나누어 총 60개의 어휘를 교수한 후 학습 결과와 학습자의 정의적 태도를 비교하였다. 연구 결과 환경 인쇄물을 활용한 집단이 사진을 활용하여 어휘를 학습한 집단보다 통계적으로 유의미한 수준에서 어휘를 더 많이 학습한 것으로 나타났다. 어휘 학습에 대한 흥미와 자신감, 그리고 어휘 학습의 중요성에 대한 학습자의 반응을 비교한 결과 자신감 영역에서 환경 인쇄물 집단의 점수가 사진 집단의 점수보다 더 높았다.
Pseudomonas sp. YS-542가 생산하는 Chitinase의 정제
강신욱,최희상 慶北專門大學 2003 慶北專門大學 論文集 Vol.22 No.-
The optimal condition for the production of chitinase from Pseudomonas sp. YS-542 was follow ; 1.0% colloidal chitin, 1.0% tryptone, 0.2% MgSO_(4)7H_(2)O, 0.1% K_(2)HPO_(4), pH 8.0 at 25℃ for 48hrs cultivation. The chitinase was purified by ammonium sulfate fractionation, two times of affinity adsorption. Yield of the purified enzyme was 19.2%. The purified enzyme showed a single protein band on polyacrylamide gel electrophoresis and its molecular weight was estimated to be 47,000 by SDS-polyacrylamide gel electrophoresis.