벼, 콩 및 채소류에 대한 Mn-54, Co-60, Zn-65, Cs-137의 토양-작물체간 전이계수

박찬걸,조용우,최용호,김국찬,이창우,이강석,이정호 대한방사선 방어학회 1991 방사선방어학회지 Vol.16 No.2

벼, 콩, 상치, 당근, 호박의 가식부위에 대하여 몇가지 토양에 있어서 토양-작물체간 Mn-54, Co-60, Zn-65, Cs-137의 전이계수를 포트 재배에 의한 방사성 추적자 흡수실험을 통하여 조사하였다. 핵종간 전이계수는 거의 모든 경우 Zn-65>Mn-54>Cs-137>Co-60의 순이었다. 콩이 벼보다 전반적으로 한 자리 정도 높은 값을 보였고 채소류의 경우에는 대체로 상치에서 가장 높고 호박에서 가장 낮은 값을 보였다. 강산성 토양에서는 약산성 토양에서보다 전이계수가 훨씬 높았다. 본 조사결과에 입각하여 한국인의 섭식경로 피폭선량 평가에 이용하기 위한 각 핵종의 전이계수치가 작물별로 제안되었다. Soil-to plant transfer coefficients of Mn-54, Co-60, Zn-65 and Cs-137 were estimated for the edible parts of the rice, soybean, lettuce, carrot, and squash grown in different soils by radiotracer uptake experiments using pot cultures. The transfer coefficients of radionuclides were n the order of Zn-65>Mn-54>Cs-137>Co-60 in most of the cases studied. The coefficients for soybean were roughly and order of magnitude higher than those for rice. Among vegetables, lettuce mostly showed the highest value and squash, the lowest. In the strongly acidic soils. From the data obtained, crop-specific transfer coefficients of the four nuclides were proposed for the use in Korean food-radiation dose assessment.

현대사회의 쟁점과 문학교육 : 세대갈등과 문학교육의 전략

박용찬 ( Yong Chan Park ) 한국문학교육학회 2013 문학교육학 Vol.41 No.-

Intergenerational Conflict and Strategies of Literature Education Park, Yong-Chan This article focuses on the role of literature education to resolve the intergenerational conflict. This article deals with literary works in korean language textbooks mainly concerning intergenerational conflict. Intergenerational conflict comes from the difference in recognition of reality and values which each of generations have. The rapid social changes bring about the difference of historical events and cultural experience between each generations. This is a factor accelerating the intergenerational conflict. Since human life contains a conflict itself, the conflict is bound to be a main material in literature works. Intergenerational conflict in literature works is mainly presented as a form of the conflict between parents and child. Since intergenerational conflict takes on the aspects of vertical conflict, it is more serious than horizontal conflict within the same generation. The novels dealing with intergenerational conflict have been positioned as an important canon(正典) in the literary education fields. This article adopted Lee Tae-jun`s ?A Stone Bridge?, Park Wan-seo`s ?A Twilight?, Oh Seung-hee`s ?Meju which followed Grandmother? as main texts in discussion. The main cause of conflicts is mainly derived from the difference of value consciousness looking at the object. These three literary works show the conflict between characters whose values are different. These conflicts can be called a confrontation between characters grew up in a different culture. Intergenerational conflict is derived from an absence of communication between each generations about assessment of value. To resolve the conflict, The width of sympathy and understanding for each other is important. It is more desirable to expose the aspects of conflict rather than hiding it in order to find a solution more seriously. For the first, It is necessary to secure many education canon dealing with intergenerational conflict in the literature education fields. Next, in the process of teaching and learning, activities to understand the other side must be planned as a teaching strategies. Through these process, it makes the learner experience the empathy and communication with each other. At last, while the learner re-contextualize the conflicts on the basis of learned literary abilities, the learner also should develop the problem-solving skills in a new situation.

光中斷 處里가 促成 딸기의 生育 및 體內 成分含量에 미치는 影響

金龍贊,朴庸奉,金榮龍 濟州大學校 亞熱帶農業硏究所 1993 亞熱帶農業硏究 Vol.10 No.-

本 硏究는 最近 딸기의 需要가 계절에 관계없이 계속됨에 따라 光周性을 利用한 각각 다른 光中斷 處理를 施行함으로서 生育狀態 및 體內 成分含量을 比較하고 周年 栽培의 可能性을 타진함과 아울러 醫學的 으로 證明되어있으며 近來에 관심의 대상이 되고 있는 抗癌物質인 ellagic acid를 定量分析하여 딸기를 健康食品으로 認識 定着시킴은 물론 栽培農家의 收入增大에 기여함을 目的으로 遂行하였는데 그 結果를 要約하면 다음과 같다. 1. 葉柄長, 葉數 等의 生育 狀態에서 光中斷處理區가 對照區보다 良好하였으며 處理時間이 길어질수록 높아지는 傾向을 보였다. 2. 收?? 開始期는 光中斷 處理區가 對照區보다 빨랐고, 時間이 길수록 效果는 上昇하였다. 3. 株當 果數는 女峰의 3時間 光中斷區에서 가장 많았으며 두 品種 공히 2時間과 3時間 光中斷 處理間에는 차이가 없었고 平均果實 무게에도 有意性은 인정되지 않았다. 4. 糖度와 酸度를 比較하면 初冬에 比하여 女峰의 糖과 酸 含量이 높았으며 두 品種 공히 處理時間이 길수록 糖ㆍ酸含量이 增加하였으나 初冬은 處理間에 糖度의 차이가 없었다. 5. Soluble sugar 含量은 還元糖인 果糖과 葡萄糖이 많았으며 非還元糖인 蔗糖은 적었고 處理時間이 길어질수록 增加하였다. 6. Organic acid 含量은 品種, 處理間에 관계없이 citric acid含量이 비교적 많았으며 fumaric acid, tartaric acid順이었다. 7. Ascorbic acid 含量은 女峰의 3時間處理區에서 가장 많았으며 初冬인 경우는 對照區에서 가장 적은 數値를 보였다. 8. 抗癌物質 Ellagic acid含量은 과실에 比하여 잎이 約 4배가 많았으며 分離形이 結合形에 比하여 約 2배가 높았고 處理間에는 初冬인 경우는 差異가 있었으나 女峰에서는 유의성이 없었다. This study was conducted by various lihgt break treatments using physiological characteristics, photoperiodism, to know possibility of year round culture of strawberry, the status of growth and development, comparison of component in vivo because demand of strawberry fruit is getting increase all the year round. In addition, as acting quantitative analysis of ellagic acid which is getting a target of concern recently and verifying medically, it was to fix recognition "strawberry fruit as a healthy food" and to contribute increase of income in farm house. Results were summerized as follows: 1. In the growth status of petiole length, leaf number, light break plots were bigger than that of control and showed getting bigger as time goes by. 2. In the harvest time, light break plots were earlier than that of control and the more the time of light break was the earlier the effect was. 3. Fruit numbers a plant were the most in light break plot for three hours of cv. Yeobong. But, there were't significant between 2 and 3 hour light break plot. There was also same trend in mean fruit weight. 4. Sugar and acid contents of cv. Yebong were higher than those of cv. Chodong and in both of two cultivars the more the time of light break was the higher the sugar and acid contents were. But ˚Brix wasn't significant in cv. Chodong. 5. Fructose and glucose contents were high but sucrose was a little and as time goes by titratable sugar contents were more and more increase in both of two cultivars. 6. Citric acid contents was the highest and in order of fumaric acid, tartaric acid 7. Ascorbic acid contents was the highest in 3 hour light break plot of cv. Yeobong and was the least in control plot of cv. chodong. 8. Ellagic acid contents in leaf was 4 time as much as that of fruit and that of free form was 2 time as much as that of conjugation form. As increase the elapsed time, ellagic acid contents was more increase remarkably in cv. Chodong but weren't significant among treatments except control in cv. Yeobong.

요중 비소농도와 N-acetyl-β-D-glucosaminidase 농도와의 관련성 평가

이용찬,임동혁,엄상용,김용대,김헌 충북대학교 의과대학 충북대학교 의학연구소 2010 忠北醫大學術誌 Vol.20 No.1

Purposes: This study was performed to evaluate the possibility of impairment of renal tubular function by exposure to inorganic arsenic of low concentration. Materials and methods: Study subjects were 867 individuals (365 men and 502 women) who resided around abandoned mine areas in Chungbuk Province, Republic of Korea. Information about the life style, drinking water type, seafood intake, and mine working history was gathered, and urinary arsenic concentration and N-acetyl-β-d-glucosaminidase (NAG) activity were measured. The correlation between arsenic concentration and urinary NAG activity was tested in groups classified according to urinary NAG activity and seafood consumption prior to urine sampling. Results: No statistically significant difference in urinary arsenic concentrations was observed between different gender and age groups. The participants those who ate seafood within three days before the urinary sample showed a higher mean urinary arsenic concentration than those who did not. In a correlation analysis between natural logarithm of urinary arsenic concentrations and that of urinary NAG activities, no statistical significance was found in a total sample as well as within a gender group. In a group with the urinary arsenic concentrations higher than the geometric mean and the urinary NAG activities higher the geometric mean, the correlation coefficient between two variables was 0.182 and significant. (p-value<0.05) Conclusions: It is suggested that renal tubular damage could be induced by non-occupational exposure to low level inorganic arsenic. 연구목적 : 본 연구는 폐금속광산 주변지역 주민들을 대상으로, 저농도 비소노출에 의하여 신세뇨관 기능이상이 유발될 수 있는지를 평가하는 것을 목적으로 시행하였다. 대상 및 방법 : 충청북도에 소재하고 있는 폐금속광산의 주변에 거주하는 주민 867명을 대상으로 직접 면접조사를 실시하였다. 대상자의 소변을 채취하여 요중 비소농도와 요중 N-acetyl-β-D-glucosaminidase (NAG) 활성을 측정하였고, 조사대상자를 역학적 변수에 따라 구분하여 두 변수 사이의 상관관계를 분석하였다. 결과 : 소변시료를 채취하기전 3일 이내에 해산물을 섭취한 사람들의 요중 비소농도는 그 기간동안 해산물을 섭취하지 않은 사람들의 농도에 비하여 유의하게 높았다. 조사 대상자들의 요중 NAG 농도의 평균값은 남녀차이가 없었으나, 65세 미만 대상자와, 표본을 채취하기 전 3일 이내에 해산물을 섭취한 사람들의 요중 NAG 활성도의 평균값은 그렇지 않은 사람들에 비하여 유의하게 낮았다. 요중 비소농도가 기하평균 이상이고, 요중 NAG 활성이 기하평균 이상인 군에서 두 변수의 상관관계가 0.182 로 유의하였다. 결론 : 정상범위의 비소 노출이라도 요중 비소농도가 8.28 μg/g creatinine을 초과하는 경우에는 미세한 신장손상을 유발할 가능성이 있으며, 해산물을 섭취함으로써 체내에 흡수되는 비소는 이러한 신독성이 거의 없다.

스포츠 용품 인터넷 쇼핑에 대한 소비자 신뢰에 관한 연구

이용찬,최종인,노선표 한국스포츠리서치 2004 한국 스포츠 리서치 Vol.15 No.4

The purpose of the study is to learn the consumer trust of university students in internet shopping of sports commodities. The subjects were 419 university students being in school in Jun La Buk Do(Jun La province) have been surveyed. 246 male students, while 173 female. For trust rate check, "consumer trust rate during internet shopping check sheet(trust rate a=0.76)" by Lee Yong Gyoon and Lee Gyoo. Yong has been used. By using statistics program of Spsspc10.0 for data processing, results have been obtained as follows after performing technical statistics, variance analysis and regression analysis. 1. Among society and population study backgrounds, there has been difference in consumer trust according to gender(p<.05), but no difference according to family types.(p>.05) 2. Shopping path, selection criteria on shopping mall and the reason for purchase of commodities have influence on consumer trust(p<.05) 3. There has been difference in consumer trust according to career of internet use(p<.05). 4. There has been no difference in consumer trust according to hours of daily internet use(p<.05) From the results above, the conclusion is that when university students purchase sports commodities using internet, they consider the stability of the company, the scale of the shopping mall company, etc.

인천국제공항철도 노선에서 서울도심통과 구간의 노선 선형계획

신태균(Shin Tae-Gyun),김인용(Kim In-Yong),정찬문(Jung Chan-Mun),김용만(Kim Yong-Man) 한국철도학회 2004 한국철도학회 학술발표대회논문집 Vol.- No.-

We as a civil investment enterprise have been constructing In-cheon International Airport Railway which is a transportation means to approach In-cheon International Airport. In this alignment, a section between the Seoul station and Ka-joa follows the existing Yong-san line at the center of Seoul city and traverses Seoul subway 2,5,6 lines. So we planned that the alignment would have the shallowest depth to lie under Kyung-eui line and above the airport railroad. The alignment is planned to construct an open-box structure only 3.6m apart from the subway line 5 tunnel structure and construct the open-box structure 0.7m apart from the subway line 2 box structure. In the line planning, we investigated both the security of the existing subway structures during and after construction and the stability and workability between newly structured tunnel structures with three dimensions numerical analysis methods. Also we raised the reliability of design verification which was achieved by specialty society"s review on the planned construction method.

QRans Order : QR 코드를 이용한 다국어 간편 주문 시스템

권찬미, 이동주, 엄성용 서울여자대학교 컴퓨터과학연구소 2017 정보기술논문지 Vol.15 No.-

In this paper, we propose an automatic order system for restaurant customers, which utilizes QR code and provides multilingual menu and currency conversion. The system consists of 2 main parts : application for customers, web and application for restaurant managers/owners. The main functions of the system are described with captured screens in this paper. Customers use the smart phone application and QR code tag attached each table to make orders. The multilingual menu and various currency feature help the foreign customers to make orders easily. The orders made by customers are automatically displayed in the smart phone or tablet installed in the cashier count and kitchen. The orders can be managed using web based system. 본 논문에서는 최근 빠르게 도입되는 무인 주문 서비스를 적용하여 다양한 식당과 국내외 소비자를 대상으로 개발된 QR 코드를 이용한 <다국어 간편 주문 시스템>에 대해 설명한다. 개발된 시스템 ‘QRans Order’는 식당 고객용 스마트폰 어플리케이션과 식당 운영자용 관리자 웹 및 스마트폰 어플리케이션으로 구성되어 있다. 본 논문에서는 개발된 시스템의 주요 기능을 화면 구성과 함께 설명한다. 시스템 구현 결과, 식당 고객용 스마트폰 어플 리케이션은 테이블마다 마련된 QR 코드를 이용하기 때문에 직원을 부르지 않더라도 앉은 자리에서 간편하게 음식을 주문할 수 있다. 또한, 다국어 기능을 통해 외국인 고객들도 간편하게 메뉴를 보며 주문할 수 있으며 선택한 언어에 따라 환산된 가격 정보도 알 수 있다. 식당 운영자용 관리자 웹 및 어플리케이션에서는 주문이 들어올 때마다 즉각적으로 주문 내역을 확인할 수 있으며, 식당 정보 및 메뉴 관리, 매출 관리 등의 업무를 체계적으로 관리할 수 있다.

RNase A에 對한 Spermine의 妨害效果로 부터 變性 DNA에 依한 救濟

李璨容,高東成 충남대학교 자연과학연구소 1983 忠南科學硏究誌 Vol.10 No.2

Recently we have reported that the susceptibility of denatured calf thymus DNA to DNase 1 is suppressed by spermine, while that of the native DNA is activated by spermine. We have also noted that the susceptibility of RNA to RNase A is suppressed by spermine, by being subjected to form inermolecular aggreates. In the present work, we find that the inhibitory effect of spermine on the susceptibility of RNA to RNase A can be relieved by the denatured DNA, but not by the native DNA. The possible explanation, based on our data, is that the relieving effec of the denatured DNA is brought about by RNA-DNA (denatured) interactions induced by spermine, thereby decreasing the aggregation of RNA molecules.

中炭素鋼 熔接部의 熱處理에 따른 機械的 性質에 관한 硏究

李龍福,金柄旭,康仁燦 弘益大學校 1982 弘大論叢 Vol.14 No.2

Strength of the weld zone is influenced by many complicated factors, such as welding conditions, constraint, materials, etc. Especially, Residual Stress plays an important role for mechanical properties in the weld zone. In this paper, the stress relief effect on the residual stress of the weld zone was examined under various annealing treatment. The results obtained are as follows. 1.Tensile strength on welding decreased 5.7%, 11.4% and 15.3% with increased annealing temperature from 650℃ to 850℃. 2.Absorbed lmpact energy increased in turns of Bond Zone, Base Metal, Fusion Zone and H.A.Z(Heat Affected Zone) and decreased with increasing of the annealing temperature 650℃, 850℃. 3.Reisdual Stress on welding was reduced by the ratio of 65%, 82.5%, 90% with the increased annealing temperature from 650℃ to 850℃. 4.It may be concluded that the best result of the annealing was obtained at 650℃.

석분과 황토를 사용한 건자재 제품 개발 연구

성찬용,류능환,윤준노,김영익,임상혁 강원대학교 부설 석재복합신소재 제품연구센터 2003 석재연 논문집 Vol.8 No.-

본 연구는 석분과 황토를 사용한 건자재 제품을 개발하기 위하여 황토의 첨가량를 5종류, 석분의 첨가량을 3종류로 하여 총 16종류의 모르타르에 대하여 단위중량, 흡수율, 압축강도, 휨강도, 동탄성계수, 초음파진동속도, 중성화 깊이에 대하여 구명하였다. 단위중량, 압축강도, 휨강도, 동탄성계수 및 초음파진동속도는 황토와 석분의 사용량이 증가할수록 감소하는 경향을 나타내었고, 흡수율과 중성화 깊이는 증가하는 경향을 나타내었다. 주사전자현미경에 의한 관찰에서는 비활성황토의 사용량이 증가할수록 결정이 증가한 것으로 나타났다. 황토의 사용량은 강도적인 측면에서는 결합재량의 40%까지 사용이 가능하고, 흡수율 측면에서는 10%까지 사용이 가능하며, 건자재의 사용목적에 따라 황토의 사용량을 조절하는 것이 필요할 것으로 생각된다. The purpose of this study is to obtain the basic data for the development of construction materialproducts using stone dust and non-active Hwangto. The results of physical and mechanical properties were as follows. The unit weight, compressive and flexural strengths, dynamic modulus and ultrasonic pulse velocity are decreased with increase of the stone dust and Hwangto. The absorption ratio and neutralization depth are increased with increase of the stone dust and Hwangto. In the results of SEM analysis, the crystals are increased with increase of the non-active Hwangto. Accordingly, the Hwangto may be suitably used as a cement replacement material in the construction material products.