Table Feeder의 連續定量供給에 關하여 (Ⅱ)

崔東珪,鄭炅樂,金起柱 全北大學校 1980 論文集 Vol.22 No.-

A Continuous Uniform Feeding method is studied with a modified table feeder. The table feeder examined has either two or three scrapers. Powders used in the experiment are talc, calcium carbonate, and quartzsand covering a wide range of flow ability. Precision of feeding is tested with particular attention to characteristics of the feeder and properties of powders discharged. Furthermore, with respect to testing methods of feeder, the effect of characteristics of the feeder and properties of powders discharged on the precision is studied both experimentally and theoretically. As a result, variation of precision with characteristics of the feeder and properties of powders discharged becomes clear even when the powder flow rate has a periodic fluctuation.

섬록암폐석을 이용한 폴리머 콘크리트의 특성 및 제품 개발

김기락,최동순,연규석,주명기,김남길 강원대학교 석재복합신소재제품연구센터 1997 석재연 논문집 Vol.2 No.-

우리나라에서는 각종 광산으로 부터 폐석이 다량으로 발생되고 있다. 이와같은 폐석의 부가가치를 높일 수 있는 방안의 모색이 절실한 실정이다. 따라서 본 연구에서는 강원도 춘천지역의 섬록암 광산에서 다량으로 발생되고 있는 폐석을 활용하여 고강도이며, 내구성이 우수한 폴리머 콘크리트를 제조하고, 이에 대한 물리·역학적 특성을 실험적으로 구명하였다. 또한 섬록암 폐석을 이용한 폴리머 콘크리트를 사용하여 플륨, 경계석, 보도블럭, 기와 등과 같은 공장제품을 제조하여 이에 대한 효율적 활용 방안을 제시하였다. Large amount of mine waste have been produced and acumulated from various mining works in korea. Mine wastes causes many adverse invironmental impacts and it is urgently required t develop methods to increase its value by resuing in construction materials and other products. The dbjectives of the study were to develop a high strength and durable high quality polymer concrete by using Diorite mine wastes that are produced from mines in Chunchon area, and to experimentally test the physical and mechanical properties of the concrete. Also, effective reuse methods for the Diorite mine wastes were suggested by developing flumes, curb stones, foot path blocks and roof tiles with the polymer concrete.

內燃機關用 사이클론形 空氣淸淨器의 開發에 關한 硏究 : 第1報 小型 自動車用 內燃機關에 對하여 1st Report, For Internal Combustion Engine as Applied to Small-size Motorcar

崔東珪,鄭炅樂,金起柱 全北大學校 1979 論文集 Vol.21 No.-

The dust collection efficiency and pressure loss of a cyclone type air cleaner (Multi microcyclone described in this report) as applied to a four-cylinder four-stroke internal combustion engine and the effect of this aircleaner on the volumetric efficiency of the engine were researched in a series of engine motoring tests. The test results were compared with those obtained in a series of tests by using a blower. The performances of a paper filter were also tested by the same methods. The experimental results are summarized as follows; In the engine test, the dust collection efficiency of the multi microcyclone was about 98% at 3,500 r.p.m. and about 96% at 700 r.p.m. The efficiency of the paper filter was 98~99% at low speed but decreased to 86% at 3,500.r.p.m of engine. The multi micro-cyclone had a little air flow resistance. The test engine with the above cyclone showed rather a higher volumetric efficiency by about 8% than one without any air cleaner at the engine speed of the maximum volumetric efficiency.

魚具類中에 分布하는 蛋白質分解酵素의 分離 및 精製에 關한 硏究

張東錫,金亨洛,趙鶴來,卞在亨 釜山水産大學校 1986 釜山水産大學 硏究報告 Vol.26 No.1-2

水産無脊椎動物중 낙지, 전복, 소라, 군소, 해삼, 개불과 水産脊椎動物인 말쥐치, 두툽상어, 먹장어, 고등어 그리고 정어리의 消化管 및 肉과 臟器組織을 區分하여 組織中에 分布하는 蛋白質分解組酵素를 抽出하여 그 活性을 比較·檢討하였다. 그리고 强한 活性을 보인 고등어 幽門垂에서 抽出한 粗酵素는 鹽析, DEAE-Sephadex A-50 column chromatography 및 Sephades G-100 겔여과에 의하여 3種類의 알칼리性 蛋白質分解酵素를 分離·精製하였으며 各 精製酵素에 대하여 活性最適條件, 基質親和度, 化學藥劑에 의한 影響 및 分子量 등을 究明하였다. 그리고 試料動物의 內臟에서 分離한 細菌中에서 가장 强한 蛋白質分解酵素를 生産하는 菌株를 選別하고 그 菌이 生産한 酵素를 精製하여 特性을 調査한 結果를 要約하면 다음과 같다. 1. 各 試料의 組織에서 抽出한 粗酵素中 活性이 强한 것으로는 정어리의 膵臟에서 抽出한 것이 活性最適條件인 pH 9.8, 45℃에서 固有活性은 360 이었고, 고등어 幽門??에서 抽出한 것은 pH 9.4, 45~50℃에서 固有活性은 275였다. 2. 고등어 幽門垂에서 抽出한 粗酵素에서는 3種의 알칼리性 蛋白質分解酵素가 分離·精製되었는데, 이 세 酵素를 SDS-PAG 電氣泳動法과 Se-phadex G-100겔 여과법에 의하여 分析·檢討한 結果 이들 酵素는 모두 monomeric polypeptide로서 구성되고, 分子量은 Enz. A가 27,500, Enz. B가 20,500, 그리고 Enz. C가 15,250 정도였다. 3. 酵素의 基質親和度를 測定한 結果 Km値는 casein 基質에 대하여 Enz. A는 5.0×??, Enz.B는 1.0×?? 그리고 Enz. C는 3.3×??였다. 4. 各 精製酵素는 soybean trypsin inhibitor에 의하여 活性이 沮害를 되었으며 Enz. A는 p-chloromercuribenzoate에 의해서도 沮害를 받았는데 Enz. B와 C는 serine系 蛋白質分解酵素로 判斷되었다. 5. 分離細菌中에서 제일 강한 蛋白質分解酵素를 生産하는 細菌은 Pseudomonas SPP. 였으며 酵素의 生産은 pH 7.0, 溫度 25℃, 食鹽 0.5% 염화칼슘 0.2%를 添加했을 때 제일 양호하였으며, 이 酵素는 分子量이 약 29,000되는 metal chelator sensitive neutral proteinase로 추정되었다. 6. 結論的으로 漁具類의 組織酵素는 계속적인 原料供給이 어려우므로 酵素의 産業的 利用을 위해서는 細菌이 生産한 菌體外 蛋白質分解酵素의 活用이 보다 有益할 것으로 생각된다. Proteolytic actvity of the tissue extracts from the octopus(Octopus variabilis), abalone (Haliotis discus hannai), top shell(Turbo cornutus), sea hare(Aplysia kurodai), sea cucumber(Stichopus japonicus), echiurid(Urechis unicinctus), file fish(Navodon modestus), cat shark(Scillion hinus tarazame), hag fish(Eptatretus burgeri), mackerel(Scomber japonicus) and sardine(Sardinops melanosticta) was compared to develope as an useful enzyme. The strongest proteolyticbacterium was selected among the isolated strains from the samples submitted, then the proteolytic exoenzyme produced by this strain was also characterized. Among the tissue enzyme extracts, the proteolytic enzymes from the pyloric caeca of mackerel and pancreas of sardine were estimated as strong alkaline proteinases. The optimum pH and temperature of the crude enzyme extracted with 1% NaCl from the pyloric caeca of mackerel and pancreas of sardine were pH 0.4, 50℃ and pH 9.8, 45℃, respectively. Specific activity of the former enzyme was 275 nM-Tyr. eq/mg-protein/min and that of latter one was 360 nM-Tyr. eq/mg-protein/min. Three kinds of alkaline proteinases were isolated from the pyloric caeca of mackerel, we named those as enzyme A, B and C. Molecular weight of enzyme A, B and C determined by SDS-polyacrylamide gel electrophoresis and Sephadex G-100 gel filtration method was to be 27,500, 20,500 and 15,250, respectively. Km value of enzyme A, B and C by the method of Lineweaver and Burk was determined to be 5.0×10??%, 1.0×10??% and 3.3×10??%, respectively, for 2% casein solution as a substrate. According to the analytical results, these enzymes were observed to be composed of monomeric polypeptide. The enzyme B and C were supposed to be a serine protease because these enzymes were remarkbly inhibited by soybean trypsin inhibitor. Pseudomonas spp. (named Pseudomonas FU 101) was identified as the strongest proteolytic bacterium among the isolated strains, which grew best at 25℃, pH 7.5. It is observed that the addition of 0.2% CaCl₂ and 0.5% NaCl in the culture medium was benefitted for the production of proteinase by Pseudomonas FU 101. The extracellular proteinase produced by the strain was supposed to be kind of metal chelator sensitive neutral protease, and it showed maximum activity at 35℃, pH 7.0. Molecular weight was estimated to be 29,000 by gel filtration. As a conclusion, both proteinases produced by Pseudomonas FU 101 and extracted from tissue of mackerel were pretty good in enzyme activity, but bacterial enzyme was more benefit for industrial use than the enzyme of mackerel tissue, because it is very difficult to supply continuously lots of pyloric caeca of mackerel as raw material for enzyme extraction.

위성측지측량을 위한 GPS 신속 관측기법의 활용에 관한 연구

이동락,박운용,신상철 東亞大學校 大學院 1995 大學院論文集 Vol.20 No.-

The NAVSTAR GPS(NAVigation System with Time and Ranging Global Positioning System)is a satellite-based radio navigation system providing precise three-dimensional position, navigation, and time information to suitably equipped users. The system will be continuously avilable on a world-wide basis, and is independent of meteorological conditions. The Global Positioning System was primarily designed for military navigation system by the US Department of Defense(DoD) in 1973. It has been successfully used in civilian geodetic surveying since 1983. Thereafter, it has been proved that GPS is the most valuable and excellent method, that ever exist in positionong system. Previous application of GPS was mainly based on the time-consuming static measurement which is combined with the results of existing triangulation or trilaterlation. Presently, however, new rapid methods are developed by using the experience of static method. These satisfy the most advantage of GPS in aspect of rapidity, accuracy and economy. In the relative kinematic methods, one antenna is always fixed at reference station and the other one travels sequentially to measuring points. Although rapid measurement method takes a few seconds or minutes, it cope with the accuracy of static method. In this paper, the characteristics of new methods are presented. Also many experiences are discussed about the coastal GPS experiment where the Kinematic Differential GPS is needed to detect the morphologic changes.

Type Ⅳ 과지질혈증에서 나타난 다발성 건 황색종 : 1례 보고 One Case Report

천동욱,김홍태,박봉훈,변영수,홍순만,손경락,문세광 최신의학사 1992 最新醫學 Vol.35 No.10

高靈鄕校의 연혁과 운영기반

정동락 영남대학교 민족문화연구소 2002 민족문화논총 Vol.26 No.-

This study is to examine the management foundation of Koryung Hyangkyo(高靈鄕校)-a public confucian education facility established locally- such as its chronology, economic foundation. It was established in 1413 and moved to Kwanbaekjen Woohyup(官栢田 右峽), and rebuilt in what is now the mountain in back of Yenjorie Kwaneumsa. Then it was remodeled by the county governor Cho Bong-Won(趙逢源) between 1663 and 1664, and moved to near Kayakawn(伽倻館) by the county governor Koo Moon-Yoo(具文遊) between 1701 and 1702, so that it became located in the current site. Since then, it has gone through a series of renovations so far. When it comes to its architectural structure, it consisted of Daesungjen(大成殿), Myungroondang(明倫堂), Dongseoje(東西齊), a warehouse, a kitchen, bathroom, three-indoor-door(內三門) from the early 18th century to the early 19th century. since then, it has been through a series of change in its arrangement. With the foundation of Chosun Dynasty and its pro-confucianism and anti-buddhism policy(崇儒抑佛), most of the temple properties and its real estates and servants began to turn into the confucianism related facilities or the economic foundation of noble families with a big tract of land. At the time, it was common that Hyangkyo was established on the foundation of dosed temples under the protection for the government. It is believed that Koryung hyangkyo was also built on a site where there used to be a temple, and in the process it absorbed economic foundation of the temple. It was provided with land and slaves from government from the early time of Chosun to the late time of Chosun. Concerning its human composition or membership, Hoondo(訓導) was dispatched as a instruction official from the government, and there were 15 to 30 students in the Hyangkyo. More detailed information about the human composition is found in some documents like Yooan(儒案) or Hyangan(鄕案).

通曉 梵日(810-889)의 生涯에 대한 재검토

정동락 영남대학교 민족문화연구소 2001 민족문화논총 Vol.24 No.-

Bum-il's family name is Kim. His grand father was of Jin-gol noble(眞骨貴族) birth and served as a governor-general of Myung joo (溟洲都督) and then settled down in Myung-joo province, sharing his political fate with Kim Joo-won(金周元). When it came to his father's days, his family emerged as a local power. Buddhistic atmosphere of his family and Shilla government's check toward his family, which was caused by a revolt of Kim Hun-chang(金憲昌), motivated him to become a buddhist priest. He is believed to have entered the priesthood to escape from such a crisis. There is a view in Nak-san temple(落山寺) that Bum-il was a pupil of Eui-sang(義湘). The view is believed to have come out because he once studied Hwa-um(華嚴) of Eui-sang. It is inferred that he received the buddhist commandments(具足戒) in Hwang- ryong temple(皇龍寺), Kyung-joo(慶州). Bum-il, who had been recognized in the arena of Kyung-Joo buddhists, accepted Sun-jong(禪宗) through the study in Dang(唐). It is inferred that he decided to go to Dang because of changing atmosphere of buddhist arena, his interests in Sun-buddhism(禪佛敎), introduction of Sun-buddhism and acquirement of fame through studying abroad. After arriving in China, he consulted Yeum-kwan Je-an(鹽官 齊安) and Yak-san Yoo-um (藥山 惟儼), the pupils of Majo Do-il(馬祖 道一). In other words, he consulted Sukdoo Hee-chun(石頭 希遷)'s faction even though he follewed Majo' theory. It shows that he lived in the transition when the successor of buddhist priests in late Shilla, early Ko-ryo(高麗) age was being transferred to Suk-doo faction from Majo faction. The direct reason why he returned to Shilla from Dang was the persecution policy against buddhism in the years of Hwoi-chang(會昌廢佛) during the regin of Moo-jong (武宗) and the fact that he wanted to introduce Namjong-sun(南宗禪), which he learned in Dang. In addition to the reason, his desire to display his abilities to the full and be recognized by Shilla society played a crucial role in his coming back to Shilla. He established SanMoon(山門) and stayed in Koolsan temple(堀山寺) for 40 years after Kim-gong(金公), the governor-general of Myung-joo, asked him to stay in Koolsasn temple. The regional relation-his native place was Myung-joo- and the invitation from Kim-gong, who wanted to improve the relationship with him, brought him to Myung-joo. While staying in Koolsan temple, he maintained a passive attitude toward Shilla loyal family and kept a certain distance away from the loyal family. That was because of a sense of his disappointment after he saw what was going on in the political arena of Shiila and the loyal family-mainly revolts to take power and deep-rooted antagonism and divisions between political powers. In addition to the reason, the relation of his political base and Koolsan temple with the faction of Kim Joo-won and the fact that public sentiment was going far away from Shilla government and the loyal family were the other reason to cause him to stay away from Shilla government and the loyal family. Bum-il, who had been dedicated to passing the buddhist commandments on and education, training disciples for 40years after Koolsan-moon(堀山門) was founded, passed into Nirvana in the third year of Queen Jin-sung. In the epitaphs of Nang-won Kae-chung(朗圓 開淸), one of his pupils, he was described as a person who combined both Sunjong and Kyojong. Choi Chi-won(崔致遠) described him as a person with high virtue and morality and said that he deserved to become a master of King.

견운모 석분을 이용한 돌침대용 판재 개발

김기락,주명기,최동순,김남길,연규석 강원대학교 석재복합신소재제품연구센터 1998 석재연 논문집 Vol.3 No.-

이 연구의 목적은 견운모 석분을 포함하는 폴리머 복합체로 현재의 돌침대용 관재보다 고강도이며, 우수한 열적성질을 가진 상판을 개발하고 물리·역학적 성질을 실험적으로 구명하는데 있다. 실험결과 성능이 우수하고, 고강도이며, 높은 충격강도와 양호한 축열성능을 갖는 것으로 나타나 실용화가 충분히 가능한 것으로 판단된다. The objectives of this study were to develop an stone bed-panel that has higher strength, better thermal property than existing bedpamels by using polymer composite contained sericite powder and to experimentally test to describe the physical and mechanical properties of the stone bed-panel. Test results not only indicate that the bed-panel has a good performance, high strength, high impact resistance and good heat storage property but also has a good possibility to put into practical usage.

쥐의 조직을 이용한 glutamine 선택성 sensor 개발에 관한 연구

김의락,손병기,임동준,배진현,최성문 경북대학교 센서기술연구소 1991 센서技術學術大會論文集 Vol.2 No.1

The various types of enzyme have been coupled to ion-selective electrodes for the development of enzyme membrane electrodes. The tissue and organ of animals and plants contained a lot of variant enzymes. A bioselsoective membrane electrode which employs slices of Wistar rat liver was studied that the effect of pH, kinds and concentration of buffer solution, temperature and thickness of slice in order to optimize electrode response. The longstability, the response time and slope of wistar rat tissue glutamine selective membrane electrode was evaluated.