불순물 첨가 BGO 섬광체 단결정의 육성과 열형광 특성

김성철,김중환,김종일,정중현,도시홍,김기동,이대원 동의대학교 기초과학연구소 1996 基礎科學硏究論文集 Vol.6 No.1

Eu or Fe doped BGO scintillation crystals were grown by Czochralski method. In order to get information about traps in the grown BGO crystals, we measured trap parameters including activation energy, frequency factor and the kinetic order of thermoluminescence, and compared such parameters with thermoluminescent characteristics of pure BGO scintillation crystals. In addition, optical transmittance of the grown BGO crystals was measured.

花鉢育苗用土에 關한 硏究 : 第Ⅰ報 産業廢棄物利用試驗 Ⅰ.Experiment of the new soil for Flower pot by Industry's waste

金祥哲 진주산업대학교 1981 論文集 Vol.19 No.-

綜合的으로 보아 種類에 따라 多少 利用上 問題를 남기는 것도 있으나 廐 堆肥와 지렁이 糞은 堆肥와 同等하거나 그 以上의 利用效果를 認定할 수 있다. 그리고 用土의 混入程度는 Flower Cavage는 지렁이糞을 細粒子의 單用이거나 1/2程度의 모래를 섞어 쓰는 것이 有用하며 廐 堆肥에서는 細粒子와 모래 또는 흙을 같은 量을 섞어 쓰는 것이 좋다. Pansy Cineraria에서는 廐 堆肥와 모래 또는 흙을 같은 量 섞어 쓰는 것이 有利하다고 生覺된다. The aim of the present study is to develop a new soil for flower pot. Three flowers (Flower Cavage, Pansy, Cineraria) planted by industry’s waste, earth-worm dropping, barnyard manure, barnyard manure with saw dust and compost. The result obtained are summarized as follows: 1. Effect of barnyard manure and earthworm dropping equalize compost or over this. 2. A soil For flower mixed equally the amount of fine particle in barnyard, sand, soil was effective. 3. One utilization of fine particle in earth worm dropping, the other utilization of fine particle in earth worm dropping with a half sand were advantage to soil for Flower Cavage. 4. The soil for Pansy and Cineraria mixed equally barnyard, and soil was advantage.

産業廢棄物 利用에 關한 硏究 : 第Ⅱ報 水稻作 客土 利用에 關한 試驗 Ⅱ. Experiment of the New soil for Paddy rice

金祥哲 진주산업대학교 1982 論文集 Vol.20 No.-

10個區의 用土와 8個 品種을 갖이고 營養生長 生殖生長 및 收量에 미치는 影響을 調査하여 穗轄 해 보면 지렁이 糞土나 廐肥土 共히 單用보다는 논흙 混用이 成績이 좋고 톱밥 볏짚 廐肥는 前者보다 成績이 顯著히 떨어지고 있으며 品種別로 보면 10個 品種中에서는 密陽 23號가 成績이 優秀하고 農白이 가장 下位에 돌고 있으며 其他 品種은 큰 差異가 없다. 産業廢棄物로서 81年度에는 花草의 鉢土 試驗을 하고 82年度에는 벼로서 客土 試驗한 結果 지렁이의 糞土는 作物 用土로서 利用 價値가 높고 또 지렁이의 養殖은 大端히 展望이 밝은 農家副業으로서 앞으로 脚光을 받을 所得 增大 事業인 同時에 그의 副産物인 지렁이의 糞土는 더 더욱 利用價値가 높다는 것을 試驗의 結果로서 밝혀졌다. This experiment was conducted to find out the available materials of soil addition on paddy field by industry's wastes. The applied industry's wastes were earth-worm dropping, barayard manure with saw dust and compost, and the usable rice varitys were Akibare, Naktong rice, Chinju rice, Milyang 23, Milyang 42, Seokang rice, Taepaek rice, Nongpaek. The checked items in this experiment were nutritional growth term of paddy, reproductive growth term of paddy and rice yield. The results investigated were summarized as follows: 1. The culm length and the number of panicles were the more complex applied industry's wastes than simple applied industry's waste during nutritional growth term, specially the data of A-s plot was the highest. But the plant vigor of Milyang 23 in rice varietys during nutritional growth term was good. 2. The number of grains per panicle on Milyang 42 during reproductive growth term was 129 and the percentage of ripeness on Milyang 42 during reproductive growth term was the best with 85%. 3. The ripeness of paddy crops in A-2 plot, B-2 plot, C-2 plot, D-2 plot was good, In Milyang 23 of A-2 plot, 1,000 grains weight of brown rice was shown 23.3 grams and polished rice yield was shown 576kg per 10a, besides those datas was recorded the best.

우리나라 밤의 實態分析과 展望

金祥哲 진주산업대학교 1983 論文集 Vol.21 No.-

綜合的으로 要約하면 栽培 面積은 76年이 3萬6千 ㏊로서 가장 많아서 漸漸 줄어들었으나 生産量은 82,83年에는 7萬 ton에 肉迫하고 있어 앞으로 5年間은 더욱 上昇 趨勢에 놓여 있다. 거기에 消費 對策도 서지 않고 加工 硏究도 開拓되지 않으며 輸出 物量도 1萬5千 ton 以下로 줄어 드는 同時에 輸出 單價도 1.100원/㎏ 以下線으로 下落하면 밤의 生産 農家의 産地 出荷單價는 500원/㎏ 線 以下로 沒落됨과 同時에 買收處도 莫然하여 우리나라의 밤의 前途는 암담하고 거의 廢園狀態도 생각하지 않을 수 없다. 그러므로 밤의 果皮 및 果肉皮의 機械的剝皮로 製粉加工을 거쳐 食糧으로 大量 消耗를 꾀하고 아울어 製菓業界에 많은 消費을 硏究하는 等 여러가지 方面으로 革期的인 消費擴大策을 創出하는 것이 時急하다. In order to survcy the cultivated area, total productive quantity, export quantity, export price and region price of chestnut in Jinju area during from 1968 to 1982 (15years), this examination was carried. The results observed were summarized as follows; 1. The most cultivated area during 15years(1968­1982) were investigated 3.6 million ho in 1976 and the cultivated area decreased after 1976, that was 0.2 million ㏊ in 1982. 2. The yield of chestnut in korea were increased continously from 1978, 11 years after planting, to 1982, that in 1982 were reached at 7.0 million ton. 3. The export quantity were investigated the most in 1980, 1.8 million ton during 15years and that were decreased after 1980, then that were 1.5 million ton in 1982. 4. The export price equalize 1,400 woen per ㎏ in 1983. 5. The region price was 897 woen per Kg in 1980, but that down to 503 Woen per Kg in 1983. Considering from above results, the yield of chestnut were increased continously, but the export quantity, export price and region price were decreased. Then I proposed as follows; (1). The stuffing carp of carp and pulp carp in chestnut should be done by machine. (2). The powdered products and jelly products should be developed.

Stevia에 關한 硏究 : 第1報 溫度別發芽調査 無機養分의 吸收 經過 및 生産曲線 調査 Ⅰ The Investigation of the Stevia's Germination on Temperature and the Absorption Passage of the Inorganic Nutriment and the Production Curve

金祥哲 진주산업대학교 1979 論文集 Vol.17 No.-

Stevia는 旣存 品種으로서는 發芽率이 낮기 때문에 種子繁殖으로서는 많은 面積의 栽培는 期待하기 어렵고 現在는 營養 繁殖(삽목) 만이 實用的인 栽培가 可能한데 農家 勞動力 不足 現象으로 또한 隘路가 많다. 그러므로 새로운 品種 育成 開發이 大端히 要請되고 있다. 施肥 關係는 無機質 肥料로서는 질소와 카리의 施用에 留意하면 되고 全生育期에 걸쳐서 2回 刈取하는데 이 時期를 잘 잡아야 한다. 卽 移植後 3個月 以內에 1次 收穫을 하고 그後 80日경에 2차 수확을 하면 가장 알맞은 수확기가 된다고 볼 수 있다. This study was designed to investigate germination ratio according to different temperature, absorption passage according to different inorganic nutrient, production curve of the stevia at first. The results are summarized as follows; 1. Germination ratio was shown 30% at 25℃ at 10℃. 2. In absorption passage of inoganic nutrient, absorption of nitrogen was high till September, that of potassium was the higher than that of nitrogen after September, that of calcium was most low before second harvest period. 3. The plant hight was observed 60㎝ at September 4, and 50㎝ at November 26 in production curve. The branching number was observed 20 branches at first harvest period in production curve.

麥酒麥에 관한 硏究 : 第Ⅲ報 麥酒麥의 耐濕性과 稈長 出穗期에 따른 關係 試驗 Ⅲ. The investgation of the Beer Barley's Wet-resistance, the yield on the stem-length and the heading-date

金祥哲 진주산업대학교 1977 論文集 Vol.15 No.-

麥酒麥에 對한 育種目標를 設定한 것에 對한 現在까지의 試驗結果를 要約하면 다음과 같은 것을 列擧할 수 있다. 1. 收量 2報에서 나타난 것과 같이 OB-S_1 泗川 2號가 500㎏/10a를 上廻하고 있고 2. 耐濕性 OB-S_1, 泗川 2號가 가장 耐濕性이 强하고 千粒重의 減少率도 OB-S_1이 0이고 泗川 2號가 2.9%로 最下位의 試驗結果를 나타내었다. 3. 稈長과 收量 稈長은 90㎝ 以下에서 收量은 400∼450㎏/10a로 集中的인 收分分布 狀態를 나타내고 있다. 4. 出穗期와 收量 出穗期는 4月 20日 以前 出穗로서 收量은 400㎏/10a 以上을 上廻하고 있는 結果를 얻었다, 以上의 結果를 보아 育種目標인 生産能力은 500㎏/10a를 肉迫하고 있으며 出穗期도 4월 15일 線으로 短縮시키고 稈長은 90㎝ 線에서 머물고 選粒率(2.5㎜以上) 86.5% 耐濕性도 相當히 强한 品種이 開發되었고 담백질 含量도 10% 線에 다다른 品種들이 많이 생겼으며 다만 色澤만이 黃金色으로 質的인 變異를 꾀하여 麥酒麥의 色澤 改善이 必要하다고 생각된다. This study was carried out ot investigate the yield of beer barley and the results were as follows. 1. The varieties, OB-S_1 and Sacheon, was produced over 500㎏ per 10 ares. 2. Both OB-S_1 and Sacheon 2 were more strong against the water, and OB-S_1 was O and Sacheon 2 was 2.9% in the decreasing rate of 1000 grains weight. 3. The average length of culm and yield were 70㎝ and 400∼450㎏ per 10-ares. 4. The yield that panicle shooting dates were before 20th April was maked 400㎏ per 10 ares.

麥酒麥에 關한 硏究 : 第Ⅳ. 栽培地域擴大를 爲한 適應試驗 Ⅳ. Investigation on the Adaptation for the Culture zone Expansion

金祥哲 진주산업대학교 1978 論文集 Vol.16 No.-

These experiments are carried out to produce the hgih yield of beer barley and the reasults are as follows; 1. The production of beer barley in Sacheon area was Similar like in Hamyang and Milyang area, but the production in Guchang and Hapcheon was less than it in Sacheon. 2. Sacheon Ⅱ was high yield than any other varieties. 3. The production of double cropping for a year paddy-field was higher that it in up land In these experients, it was found possible to produce the beer barley in any place in kyung nan excep north area of kyung nam.

희향목의 耐乾性 및 耐寒性 適應 調査

金祥哲 진주산업대학교 1980 論文集 Vol.18 No.-

"희향목"에 對한 우리 나라와 日本이 耐乾燥 寒冷地 適應調査는 먼저 우리 나라의 天然分布와 植栽分布를 調査하고 兩國의 氣溫과 兩量을 調査하여 우리 나라와 日本과의 適地 關係를 보면 다음과 같은 것을 알수 있다. 氣溫:1月中의 平均氣溫은 緯度로 보면 우리 나라가 約 ­10℃ 最低氣溫은 ­20℃ 程度 낮다. 分布:天然分布는 우리 나라에서 ­36℃에서도 自生 하고 있으며 雨量:年間 降雨量은 우리 나라가 約 500㎜ 적으며 1月中 降雨量도 約 20㎜ 적은 것 같아 以上과 같은 事項에서 보면 첫째:耐低溫性이고 耐積雪害性이며 耐公害性인 우리 나라의 "희향목"은 日本의 寒冷地로 알려져 있는 東北地方 北海道地方의 環境綠化 適應 常綠廣葉樹木으로서 둘째:"희향목"은 葉木質이 乾性이며 輸送이 簡便하여 日本의 어느 地域에 까지도 쉽게 繁殖 할수 있다. 셋째:"희양목"은 實生 營養繁殖力이 强하므로 앞으로 많은 繁殖을 하여 對日輸出에 1層 더 拍車를 加할 수 있는 樹種 이다. This investigation was conducted to find out the adaptation of the dry and the cold endurance of the Buxus Koreana Nakai, and the results were obtained as follows; 1. The flower bud differentiation of the Buxus Koreana Nakai was formed at-­45℃ (In Dr. Sakai's laboratory) 2. In the natural distribution, the Buxus Koreana Nakai was grown over the 38th parallel (minimum temperature is minus 36℃) in Korea, and below the Asaikawa of Hokkaido (minimum temperature is minus 41℃) in Japan. 3. In planting distribution, the Buxus Koreana Nakai was planted below the 38th parallel (from-­32℃ to­-16℃) in Korea and from Hagotade of Hokkaido to Dohoku zone in Japan. 4. In dry endurance, the Buxus Koreana Nakai can survived over yearing in the cold and the dry zone the amount of rain fall was less 500㎜ in a year than that of Japan and continental climate, and it was appricated greening in the cold and dry zone. 5. In the based above mention, it was concluded that Buxus Koreana Nakai ever green plant and the cold and dry endurance was planted in whole area of Japan and was expected as the tree of greening.

BGO:Eu 섬광체의 방사선 저항

김성철,황해선,정중현,도시홍,김종일,김중환 동의대학교 기초과학연구소 1998 基礎科學硏究論文集 Vol.8 No.1

Bismuth germanate crystals well known as scintillator were grown by Czochralski method. In order to understand a mechanism of radiation resistance in Eu-doped BGO, we measured radiation induced-absorption spectra, excitation spectra, emission spectra and luminescence lifetimes of BGO crystals. We found that the charge transfer state of Eu^3+ ion is to play a key role to enhance the radiation resistance in BGO crystal. The ^5D_0 emission of Eu^3+ ions that is not suitable for the radiation detectors due to a long decay time was found to be increased with increasing europium concentration. In the BGO crystal doped with 0.1 mole%, the density of radiation induced color centers was reduced about twenty times and the light output of ^5D_0 was negligible by comparing to that of BGO.

Four-Week Repeated-Dose Toxicity Study of Di-isodecyl Phthalate (DIDP) in Ras H2 Wild Type Mice

Chuel Kyu Kim,Beom Seok Han,Jae Ho Oh,Wan-Seob Cho,Ki Dae Park,Mina Choi,Min Jung Cho,Sang Yeon Oh,Sung Jun Kim,Ja Young Jeong,Seung Hee Kim,Dong Deuk Jang 한국실험동물학회 2006 Laboratory Animal Research Vol.22 No.3

Di-isodecyl phthalate (DIDP) has widely used as plasticizer in polyvinyl chloride (PVC) manufacture and ultimately typical vinyl applications, particularly wire, cable and toys. To determine dose selection of DIDP for alternative carcinogenicity study using ras H2 transgenic mice, we conducted four week repeated toxicity study with ras H2 wild type mice. Groups of 8 male and female ras H2 wild type mice were fed basal diet containing DIDP at doses of 0, 0.1, 0.3, 1, and 3% for 4 weeks. Decreases of motility and mortality were increased in the 3% DIDP treatment group. The body weights of 3% DIDP treatment group were significantly decreased compared to those of control group. The relative liver weights of male and female mice given 0.3 and 1% DIDP were significantly increased compared to those of control. At necropsy, there were no significant changes in gross lesions between treatment and control group. Microscopically, the incidences of hypertrophy of liver in mice exposed to 1 and 3% DIDP treatment groups were increased. These results indicate that DIDP has liver toxicity at greater than 1% dose. Therefore, maximum tolerated dose (MTD) was determined for each biological endpoints at a dietary level of 1%.