등가 Half-bridge모델 공진형 고주파 인버터

배영호,이현우,홍성태,서기영,차영문,권순걸 慶南大學校 附設 工業技術硏究所 1992 硏究論文集 Vol.10 No.-

이 논문은 MOSFET로 구성된 등가 Half-bridge형 고주파공진형 인버어터에 대해 기술하고 있다. 시분할 방식에 의한 게이트회로를 구성하여 구동함으로써 출력단에는 두개의 인버어터에서 동작되는 순시위상이 합성되어 있어 나타나므로 부하단 출력주파수는 소자의 수위칭주파수에 대해 두배가 되고 수위칭 손실이 경감되어 소자의 평균전류가 증가한다. This paper proposes a high frequency resonant inverter consisting of equivalent half bridge model using MOSFET. In this paper time-sharing control method is applied. as a result the output frequency is two times as high as switching frequency of device and average current of device is increased because of decreasing switching loss.

Two new records of the genus Nola Leach, 1815 (Lepidoptera: Nolidae, Nolinae) from Laos

Yeong–Bin Cha,Ulziijargal Bayarsaikhan,Sol–Moon Na,Dong–June Lee,Jae–Ho Ko,Tak–Gi Lee,Hyeong–Kyu Kim,Chang–Moon Jang,Han–Ul Kim,Yang–Seop Bae 한국응용곤충학회 2019 한국응용곤충학회 학술대회논문집 Vol.2019 No.04

The genus Nola (Nolidae, Nolinae) was established by Leach (1815), with the Noctua palliola Denis & Schiffermüller, 1775 (a junior subjective synonym of Phalaena cucullatella Linnaeus, 1758) from Vienna, Austria. Nola comprises over 200 species: Africa and western Palearctic approximately described 100 speices (Hacker et al., 2012); Oriental and Eastern Palearctic regions have over 100 species (László et al., 2010; Sasaki et al., 2011; Kononenko and Pinratana, 2013). Two species of the genus Nola Leach; Nola euryzonata (Hampson, 1900) and Nola lucidalis (Walker, 1865), reported for the first time in Laos. Illustrations of adults and genitalia of all the examined species are provided.

A-SCR을 이용한 직렬 공진형 CONVERTER의 특성평가와 설계

裵英鎬,丁元榮,金東熙 慶一大學校 1992 論文集 Vol.8 No.1

This paper discussed the operational principal and characteristics of Voltage Resonant Type DC-DC Converter of HF-Bridge Inverter Switching Control using A-SCR as switching elements. The characteristics of DC-DC Converter circuit were analyzed using the diagrams of design circuit and dimensionless control variables.

出力端 位相合成方式 高周波 共振形 인버어터

裵英鎬 경일대학교 산업기술연구소 1993 産業技術硏究所 論文集 Vol.3 No.-

Recently, power electronics has been finding wide application in power conversion systems. This redions are important that saving energy and switching power loss of high-frequency apparatus. In fact, the evolution of power electronics has followed new devices, Starting thyristor-type devices in the eraly days, recently, high frequency and high power MOSFET self-controlled device is using broadly in high-frequency systems. This reaearch proposes a high frequency resomant inverter consisting of equivalent half-bridge model MOSFET. As a output phase aynthesis strategy, the sequential gate control method is applied.

電力用 半導體 스윗칭系子의 高速 驅東技術에 관한 硏究

裵英鎬,金東熙,裵晉鎬 慶一大學校 1990 論文集 Vol.6 No.1

Power electronics technology based on power semiconductor switching devices(PSSD) is used extensively as a mean to control electrical energy in domestic and industry applications. Among commercial PSSDs, self turn-off PSSDs are most available, which can perform high speed turn-on/off operations by exciting signals at control terminals. This paper presents new driving circuits considering characteristics of PSSDs, which can drive MOSFET, IGBT, SIT, and SI-Thy having potentiality of applications in future industry, And it is shown that the proposed design method can be applied to main power conversion circuits. As a result of applications a developed driving circuit to various switching elements such as MOSFET, IGBT, SIT, and SI-Thy, it is proved that the proposed design method can be used potentially in power conversion circuits.

참깨 育種을 위한 量的形質의 遺傳에 關한 硏究 : 참깨의 遺傳力 및 諸形質間의 相關에 關하여 Estimation of Heritability and Interrelationships of Some Characters in Sesame

李喆浩,文永培 진주산업대학교 1985 論文集 Vol.23 No.-

참깨의 育種計劃을 위해 참깨 82品種의 集團에서 8가지 形質에 대한 遺傳力 및 遺傳相關을 推定하므로서 量的形質의 效率的選拔과 形質間의 遺傳的 相互關係에 대한 有用한 情報를 얻기 위하여 本硏究를 修行하였으며 그 結果를 要約하면 다음과 같다. 1. 8個形質에서 開花日數, 生育日數 및 着삭部位長의 遺傳이 가장 높고 莖直徑과 節間長의 遺傳力은 가장 낮았다. 2. 가장 높은 遺傳相關을 보인 形質들은 이삭부위장과 草長間에, 生育日數와 草長間等에서 認定되었으며 遺傳相關의 값이 表現型相關 값보다 一般的으로 높았다. 3. 이삭부위장, 莖直徑 및 開花期間은 收量과 높은 正의 相關을 보였고 開花日數만은 높은 負의 相關을 보였으며 生育日數와 草長은 數量과 가장 낮은 遺傳相關을 보였다. 4. 遺傳力과 遺傳相關係數를 同時에 考慮할적에 開花日數와 이삭부위장이 收量의 主要構成形質로 보이며 增收를 위한 效率的인 選拔은 早期에 開花日에 到達하며 이삭부위장이 긴 系統을 選拔하므로서 可能하리라고 생각된다. This studies were worked out to obtain useful information on the effective selection and the genetic relationship of quantitative characters for the planning of sesame breeding by estimating the heritabilities and the genotypic correlations among 8 agronomic characters in the population of 82 sesame varieties. The results obtained are summarized as follows; 1. Heritability of days to flowering, days to maturity and length of stem with capsule were the highest, those of stem diameter and internode length were the lowest in 8 quantitative characters.(Table 3). 2. The highest positive correlations were shown between length of stem with capsule and plant height, and between days to maturity and stem diameter etc, genotypic correlations were slightly higher than the corresponding phenotypic correlations.(Table 5). 3. Length of stem with capsule, stem diamter and durations of flowering gave positive and highly significant correlation, but days to flowering gave negative correlations as the same level, days to maturity and plant height showed non-significant correlations with yield and with one another at genotypic correlation coefficients. (Table 5). 4. Taking the values of geritability and genotypic correlation into consideration, days to flowering and length of stem with capsule are important yield-contributing characters, these results suggest that effective selection for seed yield can be made by selection for lines possessing the characters to reach early flowering time and take long stem with capsule.

복숭아 光合成能力의 時基別 變動과 品種間 差異

李喆浩,文永培,金正洙 진주산업대학교 농업기술연구소 1991 農業技術硏究所報 Vol.4 No.-

복숭아 矮性台木 利用에 의한 樹形의 矮性化는 近年의 일이며 低樹高栽培의 實用化 趨勢에 副應하여 矮性台木으로서 有望視되는 Prunus Persica(壽星桃)로서 接首品種은 8年生된 白鳳과 白桃를 供試하여 6月15日, 7月15日, 8月15日과 9月15日에 걸쳐서 地上 3.5m, 2m, 50cm높이에 着生된 主枝의 側枝新梢를 採取하여 잎의 光合成 能力을 分析한 結果는 다음과 같다. 1. 白鳳의 部位別 新梢의 光合成 速度는 上部>中部>下部의 順으로 빠르게 進行되었고 照度가 增加할수록 光合成 速度도 빨라지는 傾向이였다. 2. 白桃의 部位別 新梢의 光合成 速度는 6月과 9月은 上部가, 7月은 下部가, 8月은 中間 部位가 각각 높았다. 3. 복숭아의 光合成 能力은 6月부터 8月까지는 점점 增加되다가 9月부터 떨어지며, 7월과 8월은 白鳳이, 8月과 9月은 白桃가 光合成 能力이 더 큰 것으로 나타났다. There is a growing tendency of dwarfing fruit trees. So in this study the 8-year-old peach varieties, "Baekbong" and "Baekdo", engrafted on Prunus persica, which is promising for dwarf stock, were tried as experimental materials. The shoot sampling was done on June 15, July 15, August 15, and September 15. And the parts or smpling were 3.5m, 2m and 50cm above earth surface, respectively. The shoots were sampled from the outer parts of main branches, and the photosynthetic ability of the shoot leaves was analyzed as follows: 1. The photosynthetic rate of Backbong's shoots was highest at the top main branches; second highest at the middle ; and lowest at the lower main branches. As the light intensity increased, the photosynthetic rate became higher. 2. The Photosynthetic rate was highest at the top main branches in June and September ; in July, it was highest at the lower part ; and in August, it was highest at the middle part. 3. The photosynthetic ability of peaches increased gradually from June till August, but it decreased after September. In July and August, the photosynthetic ability of Baekbong was higher ; in August and September, that of Baekdo was higher than that of Baekbong.

麥酒麥의 栽培現沿과 展望

文永培,李喆浩 진주산업대학교 1982 論文集 Vol.20 No.-

This study was conducted to grope a scheme for achieve self-sufficiency with investigation into status of cultivation of brewery barley. The results were summarized as follows: 1. Area under cultivation and productive quantity of malting barley are to be on the increase every year under present condition, this situation will be continuous for some ttime (Table 1). 2. The self-sufficiency ratio of brewery barley was low, therefor it is essential to be promote production (Table 5). 3. The price of domestic malting barley is remarkable higher than that of imports(Table 6). 4. As the quality of domestic multing barley is inferior in comparison with that of imported articles, it is urgent to improve the quality of malting barley(Table 7). 5. The production of malting barley have a good prospect for the present in proportion to the increase of one's consumption of beer.

種薯의 크기, 切斷 및 Curing處理가 감자의 生育 및 收量에 미치는 影響

李喆浩,文永培 진주산업대학교 1982 論文集 Vol.20 No.-

감자種薯의 Curing處理, 種薯의 크기, 切斷效果 等이 감자의 塊莖形成(收量)에 미치는 影響을 究明하기 위하여 1982年 晋州農林專門大學 構內에서 男爵品種을 供試하여 處理한 結果를 要約한면 다음과 같다. 1. Curing處理는 發芽率과 腐敗 및 健全發芽 個體比率에 影響을 주지 않았다. 2. 어느 處理區에서나 定植期가 빠를수록 增收되는 傾向이었다. 3. 種薯處理에 있어서 全形薯가 切片薯 보다 11% 가량 增收되는 傾向이였다. 4. 種薯의 크기는 30∼50g에서 감자의 생육이 良好하고 收量이 많았다. To Study the effect co curing, cutting and tuber size on the tuber formation of potato, this experiment was carried out with Irish Cobbler at the campus of Jin ju Agricuttural and Forestry Technical Collegs, in 1982. Results gained would be summarized as followings: 1. In curing treatments, growths were similar to non-treatments in uniformity of sprouting and percentage of rotten tuber pieces and of healthy sprouted tuber pieces. 2. In all treatments earlier transplanting resulted higher growth and yield of plant. 3. In whole tuber treatments marketable tuber yields were increased by 11% more than tuber piece treatment. 4. In the 30 gram and 50 gram pots, the growth and yield were increased in comparison with 15 gram. From the results of this study, it concluded that the tuber could be planted heavier than 30 gram for increasing the yield.

크롬(Ⅵ)의 체내 흡수와 소실속도에 관한 연구

김현영,이성배,임철홍,이권섭,정용현,이종성,한정희,전윤석,황호순,이용묵 한국산업위생학회 2003 한국산업보건학회지 Vol.13 No.1

The CrO3 mostly used in plating. metal surface disposal, leather, cosmetic manufacturing, as an experiment material by repeatedly inhaling and exposure the male S.D. rats at a 0.00, 0.2., 0.50, 1.25 mg/㎡ concentration(particle size: 0.5-0.5 aerosol)6hours a day, 5day a week in 13weeks comparing with 2weeks, 8weeks of recovery group about the noxiousness of the experiment animal and the reduce scale of the CrO3 in the internal organ especially in blook and respiratory organ with the period of convalescent and clearance. The experiment results which we received are as follows. 1. In blood the RBC, HGB and HCT experiment, rats with 0.20, 0.50 mg/㎡ concentration showed that there were some decreases but not dependent. The kidneys absolute weight compared with control group was reduced intentionally(p〈0.05) and the lungs absolute weight compared with control group showed intentional increase(p〉0.05). 2. After the exposure of the experiment material, the whole blook, l\blood plasma and red blood cell in blood by (x): the period of convalescent, per (y); the decreasing of Cr concentration, was y=66.51 e -0.057x, y=67.2 e-0.101x, y=70.01 e-0.030 in 0.50 mg/㎡ exposure concentration by calculating the clearance coefficient of correlation, and the half life (day)was estimated 12.0, 6086, 23.0 each. 3, After the exposure of the experiment material, the experiment animals lung, liver and kidneys by(x); the period of convalescent, per (y); the decreasing of Cr conentration, was y=1808 e-0.00493x, y=12.02e-0.0297x, y=67.61 e-0.0292x in 0.50mg/㎡ exposure concentration by calculating the clearance coefficient of correlation, and the half life(day)was estimated 140.6, 23.3, 23.7, each, and including lung, liver with all of the experiment internal organs, the Cr clearance decreased as the exposure concentration increased.