국내 수집 야생버섯류 추출물의 생리활성 비교

안기홍,한재구,김옥태,조재한,An, Gi-Hong,Han, Jae-Gu,Kim, Ok-Tae,Cho, Jae-Han 한국버섯학회 2021 한국버섯학회지 Vol.19 No.1

국내 자생하는 야생버섯 추출물의 생리활성 성분을 평가하기 위하여 각지에서 수집된 야생버섯 70% 에탄올추출물에 대한 DPPH 라디컬 소거능, 총 폴리페놀 및 총 플라보노이드 함량, 철 환원 항산화능, 환원력의 항산화 활성, 아질산염 소거능 및 야생버섯의 건조시료를 이용하여 베타글루칸 함량을 분석하였다. 본 연구에서 수집된 10종의 야생버섯류 중에서 영지(OK1362) 에탄올추출물의 DPPH 라디컬 소거능(73.2%), 총 폴리페놀 함량(28.9 mg GAE/g) 및 총 플라보노이드 함량(10.0 mg QE/g)철 환원 항산화능(0.134), 환원력(0.155), 아질산염 소거능(56.3%)이 다른 버섯류에 비하여 유의적으로 가장 높았다. 그 이외에도 아까시흰구멍버섯(OK1360), 광대버섯속의 A. lanigera (OK1398), 졸각무당버섯(OK1406)이 높은 항산화능 및 아질산염 소거능을 가지고 있음을 확인하였다. 또한 베타글루칸 함량은 영지(OK1362)가 25.2%를 나타내며 가장 높았으며, 그 외에 구름버섯속의 T. lactinea (OK1457)가 24.5%로 높은 것으로 나타났다. 본 연구의 결과는 국내 자생하는 야생버섯류 중 새로운 천연물 유래 생리활성 물질을 탐색하기 위한 기초자료로서 활용 가능성을 기대한다. The aim of the study was to obtain the extracts of various native wild mushrooms and select the useful resources though biological activity evaluation. The anti-oxidant potential, nitrite scavenging activity, and ��-glucan content of wild mushrooms collected from Eumseong and Bonghwa in Korea were investigated. Based on the results of this study, Ganoderma lingzhi (OK1362) showed the highest DPPH radical scavenging activity (73.2%), ferric reducing anti-oxidant power (0.134), reducing power (0.155), nitrite scavenging activity (53.6%), total polyphenol content (28.9 mg GAE/g), flavonoid content (10.0 mg QE/g), and ��-glucan content (25.2%) when compared to other wild mushrooms sampled in this study. In addition, it was confirmed that Perenniporia fraxinea (OK1360), Amanita sp. (OK1398), and Russula sp. (OK1406) had relatively high anti-oxidant and nitrite scavenging potentials. In conclusion, our results can provide fundamental data for extracting beneficial compounds from wild mushrooms.

산업대학생을 위한 작문 지도 방안

옥치곤,김태기 진주산업대학교 1999 論文集 Vol.38 No.-

This study is aimed to find out the effective method to guide students at industrial colleges on the ways to write. First, the discussion starts with identifying what your student's status is and diagnosing what level his or her writing ability is. For example, the students in the evening class usually have their jobs. It means that they may need to learn about practical writings. When it comes to their writing ability, we note in their writing assignments that they hardly ever have a basic training for composition. Considering these points, I tried to offer guidance suited to these students. Guidance to writing has three stages : first, encouraging learners to get over the feelings of fear in writing, secondly inspiring them to generate and organize ideas about topics, and lastly training them to present their thoughts and points. Through presentation training, students learn about writing process, preparing an outline, organizing paragraphs, and developing sentences step by step. We need to make sure the skills for composition are developed by practicing writing more often, not by learning mere theories. Accordingly, the instructor should have correct knowledge of teaching composition, and provide his or her students with as many opportunities to write as possible. These days, composition has become a part of our lives, not only for people of fantastic tastes. In this respect, I think everyone needs to have basic composition education for their daily uses.

SM45C의 Laser 표면개질 조건에 따른 마멸특성에 관한 연구

옥철호,임동욱,서영백,박흥식,전태옥 동아대학교 생산기술연구소 2000 生産技術硏究所硏究論文集 Vol.5 No.1

Surface modification of plain carbon steel (SM45C) by Laser are usually much finer and stronger than the base metals. Nd-YAG laser source changes and refines the microstructure of the near surface layer, leading to enhanced hardness and wear resistance. The present study was undertaken to investigate the wear behavior and a processing parameters such as, power density, pulse width, defocusing distance, and molten depth for surface modification. The wear test was carried out under different experimental condition using the wear test device and the annular surfaces of wear test specimens as well as mating specimen of alumina ceramics(Al_2O_3) was rubbed in dry sliding condition. The results show that molten depth and width depend on defocusing distance. The wear loss was much in lower speed range below 0.2m/sec and in higher speed range above 0.7m/sec, but It was little in intermediate speed range. It depends on oxidation and wear speed.

레이저 경화면의 형상특징 해석을 위한 프랙탈 차원의 적용

옥철호,조연상,배춘익,박흥식,전태옥 동아대학교 생산기술연구소 2000 生産技術硏究所硏究論文集 Vol.5 No.2

The determination of surface topography is believed to be extremely important in the areas of contact mechanics, adhesion and friction. In order to describe topography of various frictional surface, the harding test was carried out under different experimental conditions in dry friction. And fractal descriptors was applied to frictional surface of laser modified steel with image processing system. These descriptors to analyze surface structure are fractal dimension. Surface fractal dimension can be determined by sum of intensity difference of surface pixel. Topography of frictional surface can be effectively obtained by fractal dimensions.

YAG LASER에 의한 공구강의 표면개질에 관한 연구

옥철호,강형식,박흥식,전태옥 韓國工作機械學會 2000 한국생산제조학회지 Vol.9 No.2

Laser induced surface hardening of Tool steel(STC5) can be achieved either with or without surface melting. In trans-formation hardening, as the surface is heated to a temperature below its melting point and is rapidly cooled, solidified microstructures are usually much finer and stronger than those of the base matals. For this reason, surface modification of tool steel by YAG laser irradiation has been studied as a fuction of processing parameters such as, power density, pulse width, defocusing distance, and molten depth. The high energy density changes and refines the microstructure of the near surface layer. In the case of beam passes, martensite formed in the melt zone exhibited very high vickers hardness values. Molten depth and width depend on defocusing distance, and energy of black color painting is more absorptive than other color painting.

자녀에 대한 부모의 태도가 중학생의 체육활동에 미치는 영향

김옥태,박종인,정용승 서원대학교 교육연구소 1998 敎育發展 Vol.1998 No.17

The purpose of this study was to investigate relationship between parents' child rearing attitude and physical activity of middle-school student. In order to meet purpose, the following three subsequent research questions were analyzed and these were: 1) relationship between fathers' rearing attitude and middle-school physical activity, 2) relationship between mothers' rearing attitude and middle-school physical activity. The subject of this study were 254 (127 male; 127 female) middle-school student. The data collected from questionnare designed for this study were consisted of responses to items constructed to repression analysis. The finding of this study were as follows; First, variable such as sex among sociodemographic characteristics have influenced fathers' rearing attitudes. Variables such as grade sociodemographic characteristics has influenced on technique test, theory test, and attitudes test. Second, the more fathers' rearing attitudes are affection- oriented, the more fathers' rearing attitudes has influenced on technique test, and the more fathers' rearing attitudes are rationality-oriented, the more fathers' rearing attitudes has influenceed on attitudes test. Third, the more mothers' rearing attitudes are rationality-oriented, the more mothers' rearing attitudes are rationality-oriented, the more mothers' rearing attitudes has influenceed on attitudes are rationality-oriented, the more fathers' rearing attitudes has influenceed on attitudes test. Third, the more mothers' rearing attitudes are rationality-oriented, the more mothers' rearing attitudes has influenceed on theory test.

제산제를 이용한 자두와인의 감산처리

강병태 ; 김순희 ; 윤옥현 김천대학교 2006 김천대학교 논문집 Vol.27 No.-

To decrease the acid quantity of the plum wine, we have treated the plum wine aged 3 months with calcium carbonate and potassium bicarbonat as antacids. Total acid contents of plum wine was drastically reduced and the pH was increased, rel-atively to concentrations, in the calcium carbonate treated group. But there was not consistent with results in the potassium bicarbonate treated group. However, Both of antacids did not affect the contents of total phenolics. Color changes were mon-itored by the CIELAB space, using the D65 illuminent and 10° observer. Redness (a) was significantly decreased in the plum wine treated with antacids. The chroma(C) and hue (H) parameters was also changed as a result of the dis-coloring process since they are combinations of the a and b parameters.

Hirschsprung 씨 질환에서 항문직장계측검사의 진단적 의의

최순옥,강중신,백태원,박우현 啓明大學校 醫科大學 1987 계명의대학술지 Vol.6 No.2

It is well known that stimulation of rectum by balloon distention results in the reflex relaxation of the internal anal sphincter in the normally innervated bowel. and this rectosphincteric reflex is absent in Hirschsprung's disease. It's the first report in Korea to evaluate diagnostic reliability of anorectal pressure study in Hirschsprung's disease using anorectal manometry, Model 003 developed by professor Holschneider. This investigation was performed on 21 consecutive children who complained of acute intestinal obstruction especially in infants and chronic constipation during the period February 1986 to September 1987. The ages of the children ranged from 8 days to 15 years, and 8 patients including the 4 neonates were examined within 1 year old. The 7 patients were proved to have Hirschsprung's disease who revealed no rectosphincteric reflex on anorectal pressure study, and Hirschsprung's disease was ruled out in 14 patients who reveales rectosphincteric reflex. In 2 out of 14 patients who showed no rectosphincteric reflex, Hirschsprung's disease was ruled out by rectal suction biopsy and clinical course. With the above results, this study shows an over-all diagnostic accuracy 90% along with sensitivity 100% and specificity 86%. In conclusion, anorectal pressure study is a reliable, diagnostic procedure for Hirschsprung's disease, and it has the advantage of simple , non-invasive and safe procedure without general anesthesia and is of particular value as a screening test in inpatients as well as outpatients.

藥草園植物目錄

朴胎玉,金寧順 梨花女子大學校 藥學硏究所 1960 梨花藥學硏究 Vol.- No.2

본대학 약초원은 단기4289년 5월 31일에 이대 창립 70주년(약대 창립 10주년) 기념으로 설립된 것인데, 당시 학교당국에서는 물론 여러 학부형들과 졸업생들 그리고 약업계의 정성어린 성원으로 지금에 이르는 우리들의 산(生) 배움터가 이룩되게 된 것이다. 교문을 들어서기 전에 제일 먼저 눈에 띄게 되는 것은 우뚝 솟은 대강당이지만, 그 아래 아담하게 자립자고 있는 우리 약초원은, 약학이란 학문을 택한 우리들에게 무엇보다도 먼저 마음을 사로잡게 마련이다. 약초원의 총면적은 1000평이며 이 안에는 2개의 온실이 있고 각각 12평, 16평이다. 이곳에서 재배되는 식물을 용도별로 보아 약용식물이 270종, 관상용식물이 200종이며, 이 관상용은 대개 온실에서 재배되고 있다.

20세기 Unisex Mode에 관한 연구 : 성역할 변화를 중심으로

兪泰順,李承玉 효성여자대학교 새마을연구소 1991 새마을硏究論文集 Vol.11 No.-