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가잠난(家蠶卵) 배자발육(胚子發育) 과정(過程)에서 Ascorbic acid와 Lipid의 변동(變動)에 관(關)하여
김원경 ( Won Kyong Kim ),임영우 ( Young Woo Lim ),전형원 ( Hyong Won Cheon ) 한국잠사학회 1968 한국잠사곤충학회지 Vol.8 No.-
1. Ascorbic acid는 병B 배자까지는 점차적으로 증가하고 그 후에는 감소함을 알 수 있었다. 2. Triglyceride 및 total cholesterol은 병A 배자까지 증가하고 그 후는 감소함을 알 수 있었다. 3. Phospholipid는 병A 배자에서 감소하고 병B 배자에서 증가 다시 감소하였다가 점청기배자에서 부화직전까지 증가함을 알 수 있었다. 4. Free Fatty acid는 병A 배자에서 감소하고 병B 배자와 기A 배자에서 증가를 나타내고 다시 감소하였다가 부화직전에 증가하는 것을 알 수 있었다. As a result of investigating the change of Ascorbic acid and Lipid which have a relation with metabolism of a silkworm egg in the process of the growth of embryo is silkworm eggs. The following facts have been found 1) Ascorbic acid has gradually increased before the period of the Byong B embryo and it has decreased after period of Byong B embryo. 2) Triglyceride and Total cholesterol has gradually increased before the period of the Byong B embryo and it has decreased after period of the Byong B embryo. 3) Phospholipid has gradually decreased before the period of the Byong A embryo and it increased during the Byong B embryo and decreased again at same stage. It has increased from the head pigment of embryo to hachting. 4) Free Fatty acid decreased during the Byong A embryo stage and increased from the Byong B embryo stage to the Ki A embryo stage and decreased again and increased shortly before the hachting.
철도차량 알루미늄 차체 용접방법에 따른 하중시험결과 비교 고찰
김원경(Kim Weon-kyong),원시태(Won Si-Tae),전창성(Jeon Chang-Sung) 한국철도학회 2009 한국철도학회 학술발표대회논문집 Vol.2009 No.5월
This study introduces comparison the testing results of the AL car body which is applied to FSW and GMAW welding method . The car body is made of aluminum structure materials like a sandwich panel. The static load test was performed to evaluate the structural characteristic and stability of the AL car body. Considering the vertical, compressive, twisting load and 3-point supporting, Bend natural frequency Measurement, Twist natural frequency Measurement type as a testing terms, the structural stability of a car body was evaluated.
A6005 압출재의 피로 성능 향상을 위한 마찰 교반 용접 공법 최적화
김원경(Kim Weon-kyong),원시태(Won Si-tae),구병춘(Goo Byeong-choon) 한국철도학회 2009 한국철도학회 학술발표대회논문집 Vol.2009 No.11월
In this paper, optimum values of welding variables including the welding speed, rotation speed and tilt angle are found to improve the fatigue characteristic of the friction stir welded(FSW) joint of the A6005 aluminum extrusion. According to the central composite design table, 15 FSW experiments are performed, and fatigue tests on the welding joint are done. The second order numerical model function that represents the relationship between the welding variables and fatigue strength is estimated using the response surface analysis methodology. Sequential Quadratic Programming(SQP) algorithm is used to find the optimum values of the welding variables which minimize the model function.
신형 경전철차량 대차프레임 하중시험 방법 및 결과 고찰
김원경(Kim Weon-Kyong),원시태(Won Si-Tae),전창성(Yoon Sung-Chol) 한국철도학회 2008 한국철도학회 학술발표대회논문집 Vol.- No.-
Recently, the bogie frame weight of Light Rail Transit system has been reduced in order to save energy and materials. However, this light weighted vehicle structure is very important to verify the fatigue strength at the development stage. Bogie system consists of bogie frame, suspensions, wheel-sets, braking system and transmission system. Among these components, the bogie frame is most significant component subjected to the whole vehicle and passenger loads. In this study, the bogie frame for the New LRT power car is evaluated to the static and fatigue strength. And the evaluation method is used the LRT Performance Test Standards Specification throughout the FEM analysis and static load test. The static and fatigue test results for the LRT bogie frame of power car has been appeared very safety and stable for the design load conditions.
통합사령실의 소프트웨어 개발에서 안전성활동과 개발시스템의 관계에 대한 연구
김원경(Kim Won-Kyong),온정근(Ohn Jung-Ghun),창상훈(Change Sang-Hoon) 한국철도학회 2007 한국철도학회 학술발표대회논문집 Vol.- No.-
In answer to the increase of demand for the safety in railroad, the safety activities are tried out. According to "KORAIL Instruction number 2001-49", the project for developing Integrated Centralized Traffic Control Center has been carried out and the safety activities are guaranteed by documents named "Safety Plan" and "Safety Requirements" from this project. However the development system is not enough for the full safety activities. Therefore this paper we describes the relationship of safety activities and development systems and proposes the efficient direction of safety activities.
가잠란배자발육과정(家蠶卵胚子發育過程)에서 Glucose와 phosphorus의 변동(變動) 및 방사선(放射線)에 의한 영향(影響)
김원경 ( Won Kyong Kim ),임영우 ( Young Woo Lim ) 한국잠사학회 1969 한국잠사곤충학회지 Vol.10 No.-
As a result of analyzing the change of material substance of all sorts biochemically and comparing the control with γ-ray irradiation (800r, 400 min), incubating the silkworm egges (bombyx. mori. L.) as the objective in the process of growth of embryo shortly before hatching, the following conclusion has been found. 1. Glucose has shown the increase of 281.2 mg/g in control during the pigment stage and it has shown the increase of 179.6 mg/g in γ-ray irradiation during the same period. The difference in quantity between the former and the latter is due to the fact that the growth of embryo has been influenced by the radio active. Glucose has changed with phosphorus the other way round. 2. Control organic phosphorus has shown the increase of 5.23 mg/g during the Byong B or KI A in which organ and tissue in the embryo has been formed. Organic phosphorus in γ-ray irradiation has shown the increase of 5.73 mg/g during KI B. Inorganic Phosphorus has shown only a little change in the control and γ-ray irradiation. The phosphorus in both has shown a little quantity in the γ-ray irradiation in early period of incubation. After the Ki A embryo, it has increased rapidly and it has increased till the hatching more continually than in control. The about results of the research will be helpful and instructive to the betterment and improvement, breeding and management of animals and plants.
1962년 추잠기(秋蠶期)에 발생(發生)한 가잠(家蠶) 및 야생곤충(野生昆蟲)의 경화병균(硬化病菌)에 대하여
김원경 ( Won Kyong Kim ) 한국잠사학회 1963 한국잠사곤충학회지 Vol.3 No.-
이 시험은 예비시험에 지나지 않고 그 병원성에 대하여서는 익년에 다시 하여야 한다. 그러나 지금까지 하여온 결과를 종합하여 요점을 들면 다음과 같다. (1) 누에의 녹강병과 야외곤충의 경화병 시체는 공통된 병원균 Nomuraea pracina와 Isaria spp에 의하여서 걸리는 것이라고 짐작이 된다. (2) 송충이는 Isaria spp에 의하여 이미 그 구제방법으로 실시하고 있어서 다른 야외곤충에도 그 포자가 전파되어 있음을 짐작할 수 있다. (3) 흰불나방 유충은 경화병균에 의하여 침범되지 않는 것 같다. This is a forecasting report for die experiment on agent of disease to be carried on next year. 1. Muscardine of the silkworm and wild insects are supposed to be caused by a common agent, Nomuraea Pracina and Isaria Spp. 2. In the view of using the method of spreading the spores of Isaria spp to control the Dendrolimus Spectabilis Butter, the other wild insects are also supposed to be contaminated by that. 3. Hyphantria Cunea Drury does not seem to be infected by fungus of Muscardine.