• 한국잠사곤충학회지
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• 제38권2호
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• pp.93-99
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• 1996

고조삽목후 삽수의 동아가 발아할 때 0.1~0.4% Colchicine 수용액을 4~5일간 적하하여 용천뽕의 동질4배체 2계통, 영변뽕의 동질4배체 1계통을 육성하였으며 주요 재배학적 특성은 다음과 같다. 1. 봄철의 탈포기는 모품종보다 2일간 늦으나 발아후의 발육속도가 빨라서 5개엽기는 모품종과 동일한 중생뽕이었다. 2. 잎모양은 폭광형이고 잎자루는 길고 굵으며 잎두께는 모품종보다 17~33% 두껍고 1엽중은 무겁고 잎면적중은 21~31% 증가하고 엽록소함량은 11~33% 증가하여 우수한 엽질적 요소를 갖추었다. 3. 모품종보다 가지길이는 짧고 가지수도 적으며 마디사이길이는 같거나 약간 길어지며 굵어져서 가지의 구성요소는 다소 불량하였디. 4. 가지끝마름길이 비율로 나타낸 내동성은 4원뽕 23호, 24호는 용천뽕과 비슷하고 4원뽕25호는 영변뽕보다 강하였고 뽕나무 오갈병 발생율은 높았다. 5. 모품종보다 수량성은 낮고 신초엽량비율과 정엽량비율은 약간 높았다. 6. 4원뽕23호와 24호는 염성이 비교적 높아서 62%의 교잡성공율을 나타내었으나 4원뽕25호는 염성이 낮고 교잡성공률은 23.9%이었다.

• 한국조경학회지
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• 제15권2호
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• pp.139-148
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• 1987

Exochorda serratifolia, broad-leaved shrub has beautiful flowers and is resistant to cold, shade and decease. New this native plant is considered to be worth being exploited as the outstanding plant for landscaping and horticulture. So this study was executed to utilize Exochorda serratifolia as the planting material for landscaping and horticulture through the survey of its habitat environment and the experimennt of its seed physiology and germination, vegetative propagation, culture and utilization, etc.. The results are as follows ; 1. The color of the flower is white, blooming in the early and middle of May and the seeds ripen late in Sep.. 2. The elevation, elevation, gradient and direction of the native habitat were 250m, 20-25$^{\circ}$and northern side respectively. 3. The soil pH of the natural habitat was 5.3 and soil fertility was poor. 4. Exochorda serratifolia appeared as indicator within P. densiflora community and its neighboring species were Q. mongolica, Q. dentata, R. mucronulatum, L. obtusiloba, E. oxyphillus, C. heterolphylla, var thunbergii, etc.. 5. The optimum temperature for seed germination was found at 20$^{\circ}C$ and the longer the stratification period at 5$^{\circ}C$ was, the lower the germination rate was. 6. The treat merits of GA and Kinetin increased the seed germination rate, especially under the dark condition but their high concentrations decreased the seed germination rate. 7. The rooted rate of the greenwood cutting was the highest at IBA 100ppm plot of vermiculite bed but its high concentration decreased the rooted rate conspicuously. 8. In the tissue culture, the each 1.0 ppd plot of NAA, Kinetin and NAA 1.0ppm + Kinetin showed the best growth. And the mixture of NAA 1.0ppm and Kinetin showed better growth than the single treatment of NAA or Kinetin did. 9. Transplanted Exochorda serratifolia showed healthy growth with shaded environmental condition(42.1% light intensity), therefore they can be cultivated as a shade tolerant landscape plant. 10. It was considered that Exochorda serratifolia was applicable to group planting at shade places or under trees in parks, homes, etc..

• 한국분말재료학회지
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• 제19권2호
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• pp.117-121
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• 2012

Tool steels serve a large range of applications including hot and cold workings of metals and injection mouldings of plastics or light alloys. The high speed steels (HSS) are specifically used as cutting tools and wear parts because it has high strength, wear resistance and hardness along with appreciable toughness and fatigue resistance. From the view of HSS microstructure, it can be described as metallic matrix composites formed by a ferrous with a dispersion of hard and wear resistant carbides. The experimental specimens were manufactured using the PIM with T42 powders (50~80 vol.%) and polymer (20~50 vol.%). The green parts were debinded in n-hexane solution at $60^{\circ}C$ for 8 hours and thermal debinded at an $N_2-H_2$ mixed gas atmosphere for 8 hours. Specimens were sintered in high vacuum ($10^{-5}$ Torr) and various temperatures.

• 동아시아식생활학회지
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• 제3권1호
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• pp.12-17
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• 1993

This book is named 'The Ryuk-Jab-Rok' because it was written in the last page of 1820's almanac. This book is written purely in Korean and has not been published yet. This book comprises twenty eight items, among which there are eight items of vegetable preserving method, ten items of Jook preparation methods(a kind of cereal soup), nine items of Pyun-Myun methods(a kind of rice cakes and noodles) and Yak-Bab(a kind of spiced rice). In vegetable preserving method, the eggplant, the cucumber and a songi mushroom were preserved with the drying method., A radish, a sorojangii, and the root of white cabbage were used with the cold temperature preservation. A garlic was dried after salting. The sprouts of DooRub, which were coming in the hot room, were used. In the Jook preparations, there were five animal materials which were lamb, chick, crudian, oyster and abalone. In nine Pyun-Myun methods, Jap-Gua-Sil was illegible because the letters were not clear. Among eight items, the stick rice was used in four cases, the regular rice in two cases. The ground pine nuts, honey and the Chinese date were used most ofter. And the sesame salt and the chestnut were next. The analysis of the terms I this book revealed that 26 items were used for cooking processes. And it also showed us that there were seven kind of cutting procedure and eight kinds of heating procedure. The shapes and size of foods were revealed at only three places in all items. The one-chi(chi ; abut three cm) and three-Ja(Ja ; about thirty cm) which the terms represent the length were revealed twice and once respectively in this book. In the taste description, 'the good', the most common word, was used in seven times, and which was the most frequently introduce case. The measuring unit is hard to revive since the measurements were taken by the container, which were Jong-Ja, Sabal and Tang-gii, then in use. Fifteen kinds of containers and cookers were used for preparing foods. And all of them are now I use.

• 한국잠사곤충학회지
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• 제44권1호
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• pp.9-12
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• 2002

한반도에 자생하는 돌뽕나무(Morus tiliaefolia)의 임성과 재배학적 특성은 다음과 같다. 1. 종자형성률은 46∼80%이며 종자의 발아율은 19∼28%에 불과하다 2. 개화최성기(1994년)는 4월 28일∼5월 3일로서 산뽕나무보다는 늦고 개량뽕보다 빠르다 3. 춘기 동아의 탈포기는 4월 21일∼24일로서 산뽕나무와 개량뽕보다 늦다. 4. 잎은 대형으로 엽형지수 1.05의 폭광성을 나타내며 잎두께는 산뽕나무보다 두껍다. 5.성숙엽의 화학성분은 가용성 무질소물과 조회분이 많고 조단백질, 조지방, 조섬유가 적다. 6. 낮추베기때의 자세는 대부분 전개성이며 가지는 조장형이고 절간장이 길다 7. 추위견딜성과 뽕나무 동고병에 약하다.

• 한국생활과학회지
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• 제15권5호
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• pp.803-809
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• 2006

Korean traditional paper 'Hanji' made from the bark of the paper mulberry tree is a good handicraft material because of its high viscosity, durability, dyeability, toughness, flexibility, plasticity, and manipulability. Hanji has been used as a textile material such as cotton wool for protection and keeping us warm from cold weather. However, Hanji has many limitations, while other textile materials have many advantages of such as washability, being sunproof, and fast coloring. The purpose of this study is to review physical properties, formation ability, and dyeability of Hanji as a material of fashion accessary. The contents of this study are composed of 5 parts: 1. To introduce the necessities of this study, 2. To review a historical background of Hanji and to identify its physical characteristics as a fashion accessary material, 3. To review and to compare techniques such as bonding, quilting, knitting, creasing and holding, twisting, folding & braiding, paper pasting, coloring & cutting, and outwashing(?) in making Hanji fashion accessaries, 4. To review dyeing and finishing techniques to increase commercial value, 5. To identify the best fashion accessary materials made of Hanji. The most important characteristics of Hanji as a fashion accessary material are its toughness in a wet state, fast color fixing, and flexibility. Especially weaving and knitting are considered as the most desirable techniques to make fashion accessary products stronger and more practical.

• 항공우주시스템공학회지
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• 제16권6호
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• pp.123-128
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• 2022

본 연구는 전개형 SAR 안테나에 적용하기 위한 비폭발 분리장치를 제안하였다. Ni-Cr 와이어를 감아 제작된 분리장치를 이용하여 SAR 안테나의 벨트가 전개되지 않도록 구속한다. 분리 장치를 구속하는 Ni-Cr 와이어는 발열을 통해 절단함으로써 벨트 전개 시 충격량을 최소화한다. 분리장치의 설계를 위해 설계하중(99g)과 preload를 고려하여 AL과 Ti을 대상으로 유한요소 해석을 수행하였다. AL을 이용 시 해석결과, 최대 변형량이 0.256 mm 발생하였고, 안전마진은 +0.09로 확인되었다. 또한 궤도상 열분석을 수행하여 온도분포를 확인한 결과, 최저온 궤도와 최고온 궤도에서 -50~+2℃의 온도분포와 -10~+90℃의 온도분포를 각각 나타내어 우주환경에서도 구속분리장치가 안정적임을 입증하였다.

• 한국압력기기공학회 논문집
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• 제17권1호
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• pp.8-17
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• 2021

The seat leakage test is required after the maintenance work on the valve seat. Either the test has been performed outside of the plant after cutting the valve from the pipe system or the simplified test has been performed so far. It was unable to perform the test at the plant site because it is hard to make a steady pressure on the valve inlet when it is installed in the pipe. This research aims to perform the leakage test in the nuclear power plant while it is installed in the pipe system. The mock-up test is performed by pressurizing the leak-off pipe on the valve body. The result is compared with traditional test result by pressurizing the valve inlet. Furthermore the chamber mock-up tests are performed under various conditions. The leak rate by the developed test using the leak-off pipe is found to be similar but greater than the leak rate by the existing test method. It implies that the test using the leak-off pipe is more conservative than the existing test. The methodology and the equipment which this paper suggests that on-site seat test is possible and the application of the technology could reduce the time and cost for the valve maintenance work significantly.

• 미술이론과 현장
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• 제16호
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• pp.107-137
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• 2013

This paper examines a number of Korean artists-Whanki Kim, Po Kim, Byungki Kim, Lim Choong-Sup, Min Byung-Ok and etc-working in New York in the 1960s and 1970s, focusing on their motivations to head for the U.S. and their life and activity in the newly-emerged city of international art. The thesis was conceived based upon the fact that New York has been one of the major venues for Korean artists in which to live, study, travel and stay after the Korean War. Moreover, the United States, since 1945, has had a tremendous influence upon Korea politically, socially, economically, and, above all, culturally. This study is divided into three major sections. The first one attends to the reasons that these artists moved out of Korea while including in this discussion, the long-standing yearning of the Korean intelligentsia to experience more modernized cultures, and American postwar cultural policies that stimulated them to envision life beyond their national parameters, in a country heavily entrenched in Cold War ideology. The second part examines these artists' pursuit of abstraction in New York where it was already losing its avant-garde status as opposed to the style's cutting edge cache in Korea. While their turn to abstraction was outdated from New York's critical perspective, it was seen to be de rigueur for Koreans that had developed through phases from Art Informel in the 1960s to Dansaekhwa (monochromatic paintings) in the 1970s. The third part focuses on the artists' struggle while caught between a dualistic framework such as Korea/U.S, East/West, center/margin, traditional/modern, and abstraction/figuration. Despite such dichotomic frames, they identified abstract art as the epitome of pure, absolute art, which revealed their beliefs inherited from western modernism during the colonial period before 1910-1945. In fact, their reality as immigrants in America put them in a diasporic space where they oscillated between the fixed, essentialist Korean identity and the floating, transforming identity as international artists in New York or Korean-American artists. Thus their abstract and semi-abstract art reflect the in-between identity from the diasporic space while demonstrating their yearning for a land of political freedom, intellectual fulfillment and the continuity of modern art's legacy imposed upon them over the course of Korea's tumultuous history in the twentieth century and making the artists as precursor of transnational, transcultural art of the global age in the twenty-first century.

• 한국식품영양과학회지
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• 제33권2호
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• pp.365-372
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• 2004

본 연구는 공동관리 급식을 시행하는 초등학교의 안전한 급식을 위하여 HACCP 시스템 적용 지침을 개발하고자 경북 경산지역에 위치한 W와 D초등학교의 급식메뉴를 선정하여 2002년 12월∼2003년 2월에 실시하였다. 급식 메뉴에서 학생들의 편식을 교정하데 도움이 되며, 미생물에 의한 오염 가능성이 높은 냉동 해산물을 사용하는 오징어덮밥을 HACCP 적용메뉴로 결정하였다. 오징어 덮밥의 생산 단계에 따라 공정흐름도를 작성하여 생산단계에서 반드시 점검해야 할 HACCP을 적용 지침를 제시하였다 (1) 해동 및 세정: 냉동 오징어는 흐르는 수도물로 해동하여 손질한 후 조리직전까지 식품의 내부온도는 가능한 1$0^{\circ}C$ 이하로 유지 또는 냉장보관하고, 소요시 간은 30분을 초과하지 않도록 한다. 채소는 3구 세정대에서 세정하고, 지하수 사용은 배제해야 하며 작업은 20분 이내에 완료되도록 한다. (2) 썰기: 오징어와 채소를 사용하는 칼과 도마는 구별하여 사용하며, 조리원의 개인위생을 점검하고, 칼과 도마를 포함한 조리기구의 사용 전 후의 세정 및 소독상태를 확인한다. (3)조리: 오징어와 채소는 각각 조리(데치기와 볶기)한 후 함께 섞어 끓인다. 오징어는 완전히 익혀야 하며, 완성된 음식의 내부온도는 94$^{\circ}C$ 이상이어야 하며, 21분 이상 가열한다. 맛보기 는 올바른 방법으로 실시해야 한다. (4) 배식: 조리원의 위생습관(마스크, 머리수건 및 일회용 장갑착용)을 확인하고, 음식 (오징어덮밥)의 내부온도(84.4$^{\circ}C$이상)와 조리실의 이상적 실내온도(15∼18$^{\circ}C$), 조리기구 취급이 위생적으로 이루어지는지 확인한다. 공동관리교의 안전한 급식은 표준화된 메뉴에 따라 공정 흐름도를 작성해야 하며, HACCP이 적용된 지침서가 모든 메뉴에 따라 갖추어 져야 비로소 실행될 수 있다. 따라서 정확한 온도를 측정하고 HACCP을 이해할 수 있는 교육프로그램과 다양한 종류의 식단을 생산할 수 있는 기본적인 시설과 기구를 갖춘 조리실, 전문 영양사와 고용 조리원 확보 및 안전한 식수공급이 이루어 져야 하며 이를 뒷받침하는 국가차원의 지원과 지속적인 연구가 필요하다고 사료된다.