경북 농업기후 지대별 쌀 품질 비교

이선형,원종건,최장수,안덕종,최기연,이우경,박소득,손재근,Lee Sun Hyung,Won Jong Gun,Choi Jang Soo,Ahn Duok Jong,Choi Ky Yeon,Lee Woo Gyeong,Park So Deuk,Son Jae Keun 한국작물학회 2005 Korean journal of crop science Vol.50 No.suppl1

This study was carried out to provide the geographic information based on the distribution of rice qualities and palatability in Gyeoungbuk province of Korea. The rice grain quality and environmental factors were analyzed using 513 sampling sites based on different five-agroclimtic regions of Gyeoungbuk province during three years from 2002 to 2004. In rice grain quality characteristics, the average palatability was low in South eastern coastal and Tabaek semi alpine regions as $67.6\~68.3$ and the coefficient of variation (CV) was relatively high as $6.2\~7.4\%$. The average head rice rates were low in South and Central eastern coastal regions as $87.3\~88.2\%$ and CV was high as $8.2\~8.3\%$. The average protein content was high in Central eastern coastal regions as $8.0\%$ and CV was high as $8.2\~8.3\%$. In case of palatability, the variation was differed clearly between high and low agroclimatic regions; it means that it is possible to divide the same agroclimatic region of high CV into two or three areas by CV of palatability. As the results of subdividing each existing agroclimatic regions based on the palatability, the variation of grain quality characteristics was become lower than that of existing five-agroclimatic regions. Therefore, the re-establishing of agroclimatic region based on rice grain quality was very important for precise cultivation for rice. 경북 지역 농업기후 지대를 미질 및 식미치를 근거로 하여 다시 세분화된 지대를 설정하고자 2002년부터 2004년까지 3년간 경북 전 지역에서 가장 많이 재배되고 있는 품종 중 중만생종인 일품벼, 주남벼, 남평벼, 중생종인 화영벼, 조생종인 오대벼를 재배하고 있는 논 513개소의 쌀을 수집하여 분석 조사한 결과를 요약하면 다음과 같다. 1. 지대별 식미치의 평균은 동해안 남부지대가 67.6로 다른 지대에 비해 약간 낮았으며, 완전미 비율은 동해안 남부지대 및 동해안 중부지대가 각각 $87.3\%,\;88.2\%$로 낮았으며 변이계수도 각각 $8.2\~8.3\%$로 높았다. 단백질 함량은 동해안 중부지대가 $8.0\%$로 다른 지대에 비해 약간 높았고, 변이계수도 $8.8\%$ 높았다. 2. 특정지역을 세분하여 쌀 품질을 조사해보면 전체 평균의 변이계수보다 높게 나타나는 지역과 낮게 나타나는 지역으로 뚜렷하게 구분된다. 변이 계수가 크다는 것은 특정 지역 내에서도 쌀 품질의 세분화된 지역간 차이가 심하므로 고품질 쌀 생산을 위해서는 세분화된 벼 재배 구역 설정하여 적지적작의 정밀농업이 필요하였다. 3. 식미치를 근거로 세분화된 지대의 쌀 품질 요인에 대한 연차 간 변이계수는 기존 농업기후지대의 변이계수보다 상당히 낮아져, 세분화된 지대별 고품질 쌀 생산을 위한 특정 지역의 정밀 기술 개발 및 보급의 기초 자료로 활용할 수 있을 것으로 사료되었다.

경북 지역의 연차간 쌀 품질 변이

원종건,이선형,최장수,박상구,안덕종,박소득,손재근,Won Jong Gun,Lee Sun Hyung,Choi Jang Soo,Park Sang Gu,Ahn Duok Jong,Park So Deuk,Son Jae Keun 한국작물학회 2005 Korean journal of crop science Vol.50 No.suppl1

경북지역의 연차, 품종, 이앙시기, 질소 시비량에 있어서 쌀 품질의 변이를 분석하여 고품질 쌀 생산을 위한 최적 기술 투입을 위한 기초 자료로 사용하기 위해 2002년부터 2004년까지 3년간 시험을 실시한 결과는 다음과 같다. 1. 연차 및 지역별 미질 분석에서 식미치와 아밀로즈 함량의 변이계수가 $3.9\~4.3\%$로 낮아 변이가 적었으며, 단백질 함량과 완전미 비율의 변이계수는 $7.9\~12.2\%$로 비교적 높게 나타나 변이가 컸던 것으로 나타났다. 2. 지역별 품종간에 미질 변이에서도 아밀로즈함량과 식미치에서 변이계수가 $2.6\~3.6\%$로 낮았으며, 완전미 비율과 단백질 함량은 $5.4\~7.2\%$로 다소 높았다. 3. 동일 품종에 대한 이앙시기에 따른 쌀의 품질 특성 변이에서는 연차간 및 품종에서와는 달리 단백질 함량의 변이계수가 2.2로 가장 낮았고, 아밀로즈 함량과 완전미 비율에서 $3.1\~3.7$로 다소 낮았지만, 식미치에서는 $5.8\%$로 다소 높아 같은 품종이라도 이앙시기에 따라 식미치의 변화는 큰 것으로 나타났다. 4. 지역간 미질의 변이는 품종 및 이앙기 이동에 따른 변이 보다는 오히려 연차간에 나타나는 변이가 더 크게 나타났으며, 이는 기상의 영향을 많이 받았기 때문인 것으로 사료되었다. 5. 동일 품종에 있어서 질소시비량에 따른 미질관련 형질의 변화와 변이에서는 이화학적 특성 중 아밀로즈 함량은 변이계수가 1.8로 질소질 비료의 영향을 거의 받지 않았던 것으로 나타났고, 질소질 비료를 증시함에 따라 미립내의 단백질 함량은 증가하여 변이계수가 4.4로 그 변이도 컸던 것으로 나타났다. 식미치 또한 단백질 함량과 같은 결과를 보였다. 쌀의 외관상 품위에 있어서는 질소질 비료의 증량에 따라 분상질미의 증가율이 가장 높았다. This study was carried out to improve the rice grain quality of Gyeoungbuk Province from 2002 to 2004. In variation of grain quality characteristics as the cultivation years were changed, the coefficient of variation (CV) of palatability and amylose content were relatively low as $3.9\~4.3\%$ and those of protein content and head rice rate were high as $7.9\~12.2\%$. Among the varieties, the tendency of variation was similar with cultivation years changing, CV of amylose content and palatability also low as $2.6\~3.6\%$ and those of head rice rate and protein content were high as $5.4\~7.2\%$. In variation as affected by shifting of transplanting times, the CV of protein content was low as 2.2, it was also relatively low in amylose content and head rice rate as $3.1\~3.7\%$, but it was high in palatability as $5.8\%$. As the nitrogen application levels were different the CV of amylase content was $1.8\%$ that it was not affected by the N levels. But in case of protein content, the CV was $4.4\%$ that the variation was somewhat increased, it suggested that as the N levels were increased the protein content was also increased. From these results, the rice quality characteristics showed the higher variation in the change of cultivation years than that in rice varieties, transplanting times or nitrogen levels.

Glass Panel 연마설비의 동역학 특성 해석에 관한 연구

서종휘(Jong-Hwi Seo),장현수(Hyun-Soo Jang),박태건(Tae-Gun Park),최장수(Jang-Soo Choi),박태원(Tae- Won Park) 대한기계학회 2002 대한기계학회 춘추학술대회 Vol.2002 No.5

In this paper, A dynamic analysis model of lapping machine which is grinding a glass panel is proposed. This analysis model is available for predicting the dynamic performance to develope the new lapping machine. Analysis results are aplied to predict the quality of glass panel after manufacturing. Finally, we also developed the only design program for a user who is lapping engineer in spot.

당구(Angelica gigas Nakai)에서 꿀벌(Apis mellifera L.)의 訪花活動 및 結實에 關한 硏究

심용구(Yong-Gu Sim),최영연(Young-Eoun Choi),박종균(Jong-Kyun Park),최장수(Jang-Soo Choi),이무호(Moo-Ho Lee),류태석(Tae-Seok Ryu),권오흔(Oh-Heon Kwon) 한국양봉학회 1997 韓國養蜂學會誌 Vol.12 No.2

3D프린트를 이용한 햅틱 가상용접토치 제어 시스템 개발

고재형(Jae Hyung Ko),김태희(Tae Hee Kim),최장수(Jang Soo Choi),아마르나스와르마 앙가니(Amarnathvarma Angani),신규재(Kyoo Jae Shin) 대한전자공학회 2019 대한전자공학회 학술대회 Vol.2019 No.6

Welding is one of the basic tasks required in various industries as well as manufacturing. The purpose of this study is to develop a haptic torch to create an environment similar to actual welding in order to use a welding simulator as a training tool. In order to develop a torch with a haptrip technology, we created a torch using 3D print and reduced the error by increasing the position accuracy using the Polhemus simulation tool. Using a welding simulator using a haptic torch capable of controlling the intensity of a vibration motor, we found that it was very similar to actual welding.

벼 성숙기 침관수 피해양상

최장수,안덕종,최충돈,이승필,최부술 한국농림기상학회 2000 한국농림기상학회지 Vol.2 No.4

The typhoon and flooding injury in rice were investigated both the region of downpour at the middle of August and the region of typhoon "Yanni" at the late of September, 1998 in Kyongbuk provincial of Korea. More than 10% of rice stem were buried by soil inundation, the heading was delayed and the high node tiller was brought out. Yield components were deteriorated and yield was reduced. As the clay in the muddy water was attached on grains of rice, the yield was greatly reduced by reason of low grain filling ratio and polished rice ratio. The injury of muddy water was less at yellow ripening stage than at early ripening stage. On the other hand, the muddy water injury was reduced by the fungicide "Benomyl" and "Daconil" treatments. The degree of lodging according to varieties and ripening stages was not made a great difference, while the lodging was mainly occurred in the early transplanting time. In a week after lodging, viviparous spikes were occurred in almost all varieties, the degree of viviparity was shown highly in order of early maturing, middle maturing and late maturing varieties in the field as well as in laboratory test. The viviperous spikes were greatly occurred in the lodging toward hill space within row than row space because the more grains were touched on the ground.

珪酸이 水稻 幼苗의 溢液에 미치는 影響

諸商律,崔章洙 慶北大農學誌編輯委員 1986 慶北大農學誌 Vol.4 No.-

水稻 生有初期에 珪酸을 處理할 때 幼苗의 葉先端으로부터 排出되는 溢液量과 溢液을 通해 어느 程度珪酸이 外部로 排出되며, 溢液中의 珪酸과 葉燒와의 關係를 究明하고저 多收系 品種 삼강벼와 一般系品種 낙동벼를 供試하여, ?度範圍가 29~33℃ 인 室內 自然光下에서 50㎝×150㎝×70㎝인 vinyl 箱子로 密閉하여, 水耕 栽培한 水稻 幼苗에서 採取한 溢液中의 珪酸을 分折 調査하여던 바 結果를 要約하면 다음과 같다. 1. 珪酸 處理 濃度가 200ppm까지 增加할수록 溢液量은 增加하였으며, 珪酸 濃度가 200ppm 일때 溢液量은 낙동벼 4.30㎎/plant, 삼강벼 4.34㎎/plant이었으며, 250ppm以上에서는 溢液量이 減少하였다. 2. 珪酸 處理 濃度가 높을수록 溢液量 含有되어 있는 珪酸의 濃度는 增加하였으며, 溢液中 珪酸의 濃度 對 珪酸 處理 濃度 比는 100ppm 以上에서는 減少하였다. 3. 處理된 珪酸은 短時間에 水稻根으로 吸收되어 溢液을 通해 排出되며 處理 後 12時間에 排出된 溢液에 珪酸의 含量이 가장 많았으며, 珪酸 處理 300ppm에서의 溢液中 珪酸의 濃度는 낙동벼 SiO_(2) 172.6ppm/cc, 삼강벼 SiO_(2) 199.8ppm/cc이었다. 4. 溢液中에 含有되어 있는 珪酸의 濃度와 葉燒의 程度는 正의 相關(낙동벼 r-0.97^(**), 삼강벼r-0.97^(**))이 있었다. This study was conducted to find out the effect of SiO_(2) treatment on the SiO_(2) concentration in guttation liquid, the amount of guttation liquid exudated from the margin of rice leaves, and the relationships between SiO_(2) concentration in guttation liquid and foliar burn during the rice seedling stage, using two rice varieties;Nagdong-byeo (a Japonica) and Samgang-byeo (a - Indica - Japonicahybrid). Seedlings were cultivated in water solution and enveloped in polyvinyl case (50㎝×150㎝×70㎝). SiO_(2) treatment increased the amount of guttation liquid, the amount of guttation liquid (Nagdong-byeo:4.30mg/plant, Samgang-byeo:4.34mg/plant)) treated with 200ppm of SiO_(2) was greater than any other level, decreased over 200ppm of SiO_(2). SiO_(2) concentration in guttation liquid was increased as application rates of SiO_(2) increased, showing the positive correlation, and SiO_(2) in guttation liquid/SiO_(2) in culture ratio decreased over 100ppm of SiO_(2). The highest concenitration of SiO_(2) (Nagdong-byeo:172.6ppm/lcc, Samgang-byeo:199. 8ppm/lcc) in guttation liquid was obtained at 12 hrs after SiO_(2) applied. Foliar burn seemed to be closely related with SiO_(2) concentration in guttation liquid.