간행물
Current Research on Agriculture and Life Sciences 경북대농학지
- 발행기관 경북대학교 농업생명과학대학
- 자료유형 학술지
- 간기 계간
- ISSN 2287-271X (Print)2288-0356 (Online)
- 수록기간 1983 ~ 2015
- 주제분류 농수해양 > 농학 농수해양 분류의 다른 간행물
- 십진분류KDC 520DDC 630
권호리스트/논문검색
Vol. 27 (2009년 12월) 10건
1.
2009.12
구독 인증기관 무료, 개인회원 유료
우리나라에서 감은 재배면적으로 볼 때 사과 다음으로 넓은 면적을 차지하고 있다. 그러나 감 재배 포장의 70%가 경사지에 있어서 수확작업의 효율성이 떨어진다. 기존의 감 수확기구는 구조상의 문제로 인해 탈과가 용이하지 않고 또한 수확기구의 중량이 무거워 농민들이 사용하기에 적절하지 않아 작업능률이 저하되고 있다. 본 연구는 이와 같은 문제점의 해결을 위해 감과실의 과실-과경계의 물리적 특성을 분석하고, 새로운 감 수확기구를 개발하여 기존의 감 수확기구와 탈과력을 비교하였다. 그 결과를 요약하면 다음과 같다. 1. 과실의 무게와 과실-결과지계의 크기를 측정한 결과 과실의 무게는 평균 157 g이었고, 과경부는 장경이 평균 4.6 mm, 단경이 평균 3.7 mm로 나타났다. 또한 과경부 단면적은 평균 이었고, 과경부 길이는 평균 13.6 mm로 나타났다. 2. 기존의 탈과장치의 탈과력은 최대 114.7 N, 최소 63.7 N, 평균86.3 N으로 나타났다. 3. 개발한 탈과장치의 탈과력은 최대 113.8 N, 최소 51.0 N, 평균 72.6 N으로 나타났다. 4. 평균 탈과력은 칼날형이 72.6 N이고 기존의 것이 86.3 N으로서 기존의 것이 칼날형보다 1.2배 큰것으로 나타났다. 5. 탈과력은 과경부의 단면적 증가에 따라 증가하였다.
4,000원
2.
2009.12
구독 인증기관 무료, 개인회원 유료
우리나라에서 감은 재배면적으로 볼 때 사과 다음으로 넓은 면적을 차지하고 있다. 그러나 감 재배 포장의 70%가 경사지에 있어서 수확작업의 효율성이 떨어진다. 기존의 감 수확에 이용되는 고지전정기는 구조상의 문제로 인해 사용 시 많은 힘이 소요된다. 본 연구는 이와 같은 문제점의 해결을 위해 기존의 고지 전정기를 개량하여 감탈과시 소요되는 고지전정기의 레버 장력을 기존의 고지전정기와 비교하였다. 그 결과를 요약하면 다음과 같다. 1. 기존의 스프링레버식 고지전정기의 탈과 시 소요되는 레버 장력은 최대 34.4 N, 최소17.7 N, 평균 25.5 N으로 나타났다. 2. 개발한 유압레버식 고지전정기의 탈과 시 소요되는 레버장력은 최대 4.9 N, 최소0.2 N, 평균2.9 N으로 나타났다. 3. 개발한 유압레버식 고지전정기의 평균 장력은 유압레버식이 2.9 N이고 스프링레버식이 25.5 N으로서 스프링레버식이 유압레버식보다 8.7배 큰 것으로 나타났다. 4. 수합장치의 수합율은 개량한 장치가 기존의 것보다 7% 높게 나타났다.
4,000원
3.
2009.12
구독 인증기관 무료, 개인회원 유료
The purpose of this study was the efficient use of the black rice bran for dyeing textiles. For this purpose, we investigated proper extracting conditions of black rice bran, dyeability and dyeing fastness of dyed silk fabrics. To find proper extracting condition of black rice bran, we extracted black rice bran with water at different temperatures(, , ), different extracting pH(pH3, pH4, pH5, pH6) and extracting time(20, 40, 60, 80, 100, 120, 140, 160, 180min.). Also we investigated the effect of dyeing time(1, 2, 3, 4, 5, 6hr.), dyeing temperature(, , ) and mordanting method(non, pre, sim, post) to examine dyeability and dyeing fastness of dyed silk fabrics. As a result, when the extracting temperature and time were , 3hr., respectively, extracting was best. And the higher the extracting concentration, the more the extracting amount. As the dyeing temperature and time were higher and longer, the dyeability of silk fabrics was better. With mordant, the dyeability was improved and when using premordant method better, the K/S value was maximized. The laundering fastness of the silk fabrics dyed with black rice bran was estimated to have a good grade of 3~4, however, the light fastness was poor to have a grade of 1~2.
4,000원
4.
2009.12
구독 인증기관 무료, 개인회원 유료
벼의 약 및 현미 배양효율과 관련된 DNA marker를 이용하여 인디카형 벼 품종인 'IR 36'의 조직배양 효율을 개선하기 위하여 실험한 결과를 요약하면 다음과 같다. 벼품종 간에 약 및 현미배양 효율을 비교한 결과 자포니카 > 통일형 > 인디카 형의 순으로 나타났다. 그러나 MGRI집단의 약배양에서 식물체분화율이 높은 계통으로 선발된 'MGRI 079'와 'MGRI 036'의 약배양 효율은 각각 19.8%, 19.9%로 가장 높게 나타났다. 'MGRI 079'에 'IR 36'이 여교배되어 양성된 90 계통에 대한 marker검정을 실시하여 positive band를 나타내는 34계통을 선발할 수 있었다. 선발된 34계통 중 10 계통의 약배양에서 캘러스 형성률은 'IR 36' 보다 현저히 높았다. 선발된 10 계통의 현미배양에서도 캘러스형성 능력과 식물체재분화율이 'IR 36' 보다 높게 나타났다. 계통 중에서 식물체분화능력이 높은 계통으로 선발된 -28은 간장이 'IR 36'보다 큰 편이었으나 출수기와 미립특성은 'IR 36'과 비슷하였다.
4,000원
5.
2009.12
구독 인증기관 무료, 개인회원 유료
Liquefied-wood polymer composite was prepared and mechanical properties was evaluated to develop potential utility of liquefied wood. The liquefied wood was made from waste wood and chemical modified with acetic anhydride and maleic anhydride (MA), phtalic anhydride (PA). The composite sheet was prepared from modified liquefied-wood and polymer(PE). The mechanical, chemical and microscopical properties composite sheet were investigated. The results were summarized as follows, 1. The tensile strength was increased and breaking elongation of composite sheet was decreased with the time of acetylation and the dosage of MA. 2. The Young's modulus of composite sheet was gradually decreased with the dosage of PA. 3. The peak intensity of 1737cm-1 in FT-IR spectra of chemical modified liquefied woods was increased. 4. The dispersity of liquefied woods with PE was improved with chemical modification.
4,000원
6.
2009.12
구독 인증기관 무료, 개인회원 유료
In this study, waste natural fibers and natural adhesions were used to prepare an environmental biodegradable nonwoven type mulching material. Especially, the nonwoven mulching with higher content of cotton shows a improved biodegradation. Also, the physical properties of nonwoven mulching with different ratios of cotton/rayon were studied. It was found that the degree of biodegradation was controlled by the type of nonwoven materials and adhesions.
4,000원
7.
2009.12
구독 인증기관 무료, 개인회원 유료
Most soybean sprouts grown in factories are sold on the market. When the soybean sprouts grow up to lateral root initiation, the rate and absolute amount of asparagine in the roots of all sprouts are comparatively low. To extract the greatest amount of asparagine from soy-sprouts, it is advantageous to grow sprouts more than 16 days. When sprouts were grown with ozonic water, it was possible to grow sprouts more than 16 days without any rotting problems. The content of asparagine in the sprouts were proportionally increased up to 16 days. When sprouts were grown in 0.2% of urea, the content of asparagine in sprouts were significantly increased. Soybean sprouts grown at room temperature showed the highest yield rate and asparagine content, at the same time.
4,000원
8.
2009.12
구독 인증기관 무료, 개인회원 유료
This experiment was conducted to determine the amount of asparagine content in soybean sprout soup as well as its effect on the regulation of blood alcohol concentration in human body. Asparagine content and alcohol concentration in blood were analyzed using the amino-acid analyzer and alcohol tester, respectively. Asparagine content in soybean sprout soup was highly significantly different among sprout soups sampled from different restaurants, although the boiling time and amount of sprout used were different among the samples. Significantly higher asparagine content was observed in soups with higher amounts of sprouts (2.81% in 500 grams of sprout) and 10 minutes after boiling with other solid ingredients in the soup. Lower concentration of alcohol in blood was recorded in persons with higher body weight. The asparagine+soybean extract (eaten immediately after drink) lowered the blood alcohol concentration significantly followed by only asparagine and control. The blood alcohol concentration after drinking become zero earlier (by 30 minutes), when asparagine+soybean extract or only asparagine was consumed as compared to control.
4,000원
9.
2009.12
구독 인증기관 무료, 개인회원 유료
The purpose of this study is to propose the methodology for introducing green infrastructure that can improve the health of citizens by promoting walkability. The methodology is composed of the following three phases: classification of the types of green spaces, selection of core green spaces with two separate analyses, and introduction of the framework of green infrastructure to promote walkability. In the first phase, the classification of the types of green spaces was carried out in order to understand existing distribution pattern of green spaces in study site. In the second phase, walkable blocks were selected by such methods as walkability value. Through these two analyses, all the blocks were divided into three groups according to the ranking figured up the second analyses' results. The blocks in the first group, the group involved in the top 30% and having the greatest ranking, were defined as walkable blocks. In the last phase, a basic frame of the green infrastructure in study site was introduced by connecting the walkable blocks with using other blocks and the green spaces over 1ha. In case study, 28 important green spaces and 35 walkable blocks were selected through the two analysis process. Then, the basic framework of green infrastructure based on the selected 28 important green spaces and 35 walkable blocks was introduced. The methodology applied to this study can be used to get the best selections of the proper green infrastructure in accordance with the purpose of the ecological and recreational local development. In particular, this study will suggest a specific analysis model to use for the ecological and walkable urban planning with green spaces existing in the city.
4,000원
10.
2009.12
구독 인증기관 무료, 개인회원 유료
This research regard it as most meaningful to realize the importance of the hedgerow in cultivated areas functioning as a residual landscape element in rural landscape and set improvement guidelines through landscape character and value analysis to cope with landscape malfunction. The results of summary are as follows. 1) First of all, as a result of landscape character analysis of edge stripe in cultivated land in total of 7 case areas, for example, the edge stripe in cultivated land in case area 4 and 8 maintain the width of 10m and are assessed satisfactory in terms of vegetation development condition, appearance of living species, connectivity, buffer capacity and so on. Also, as a result of structural character of correlation analysis among items, the correlation coefficient between width and appearance of living species showed 0.941, the highest. Following are connectivity and appearance of living species and width and buffer capacity respectively: 0.841 and 0.740. 2) As a result of landscape character analysis of uncultivated stripe in total of 6 case areas, it is analyzed that case area 4 maintains the widest width as almost 4.5m average width and considered valuable as I degree in vegetation development condition, filtering, and connectivity. 3) As a result of problem analysis of uncultivated stripe, for example, case 3, 9, and 10 was analyzed that the width was below 1.25m which is too small to carry out the function of buffer and habitat for living creature, so minimum standard width was set between 4~5m through comprehensive analysis of character of each case area. Based on the result above landscape character, value and problem analysis, main improvement guidelines are set in terms of width, connectivity, filtering, and vegetation development, restrictive practices and so on.
4,000원
