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인삼의 재식위치와 생육시기에 따른 생육특성 및 진세노사이드 함량 변화
권순구,이충열,오동주,이관영,차선우,이성우 韓國藥用作物學會 2010 한국약용작물학회지 Vol.18 No.1
This study was conducted to investigate the effect of planting position on the growth characteristics, yield and ginsenoside content in Panax ginseng C.A. Meyer at different growth stages. Referring to shoot growth characteristics, stem length, stem diameter and leave area were higher at front than rear, increasing as the proceeding of growth stages. But a lower chlorophyll contents was caused at front compared to rear and decreased as the proceeding of growth stages contrarily. According to root characteristics, root length and main body length were higher at front, with a positive correlation to growth stages, which was also shown on fresh root weight and dry root weight with the maximum in August. Meanwhile, the effect of planting position on ginsenoside content could also be definite by the highest content at front showing high light intensity, increasing as the proceeding of growth stages as well.
로우터리 耕耘날의 回轉速度 및 作業速度가 耕耘所要動力에 미치는 影響
權純球,金聲來 충남대학교 농업과학연구소 1984 農業技術硏究報告 Vol.11 No.1
This study was carried out to analyze the effects of the revolution and forwarding speed of the rotary blade and the edge curves which were 30° and 40°, on the power requirement of rotary tillage. In this study, the revolutions of the rotary blade considered were 204, 243, 285, 360 rpm, and the forwarding speeds of the rotary system considered were 29.40cm/sec, 46.93cm/sec. The power requirements of rotary blade were measured by a dynamic strain gage systems at the soil bin which was filled with artificial soil. The results of the study were summarized as follows 1. The response surface analysis showed that the revolution and forwarding speed of the rotary shaft had an interacting influence on the torque requirement of the rotary blade. The mathematical model developed by the above was repersented as follow. T=a_0,+a_1V -a_2R +a_3VR+a_4VR² where, a_0 = constant a₁, a₂, a₃, a₄ = coefficients V = forwarding speed of the rotary system. (cm/sec) R = revolution of the rotary shaft. (rpm) T = tilling torque requirement. (kg-m) 2, When the maximum tilling torque requirement was analyzed, ∂T/∂R was decreased with the increasing revolution of rotary shaft, while ∂T/∂V was increased, which was minimum at 200∼220 rpm. When the forwarding speeds were increased, ∂T/∂R was decreased with increasing rate. 3. When the mean tilling torque requirement was analyzed, ∂T/∂V was constant at 320∼360 rpm and ∂T/∂R was decreased with increasing rate along with the increasing revolution of rotary shaft. 4. When the mean tilling torque requirement. per unit volume of soil was analyzed, ∂T/∂V was minimum at 270∼300 rpm. ∂T/∂R for the forwarding speeds of 29.40cm/sec and 46.93cm/Sec was same as that for 280∼290 rpm. 5. Increasing the edge curves of the rotary blades, the tilling torque requirement was increased. But other studies showed that the smaller the edge curve, the more straw could be wrapped on blades which resulted in increasing torque requirements. Therefore, the edge curve of rotary blade should be considered for the future study.
권순구,김기욱,이규복,Gwon, Sun-Gu,Kim, Gi-Uk,Lee, Gyu-Bok 한국전기기술인협회 2002 電力技術人 Vol.239 No.7
자가용전기설비의 신 증설시 및 설치후에 하는 검사, 점검 시험 및 측정에 대하여 그 목적과 실시방향 및 실시하는데 있어 구체적 방법과 그 결과의 판단과 처치 및 기록에 대하여 될 수 있는 한 실무적으로 기술하였다.
권순구,김기욱,이규복,Gwon, Sun-Gu,Kim, Gi-Uk,Lee, Gyu-Bok 한국전기기술인협회 2003 電力技術人 Vol.245 No.1
검출부를 목적부분에 접촉시켜 지시부에서 볼수있도록 한 간이형인 것이다. 대개는 서모커플을 검출소자로서 사용하고 있으나 서미스타를 사용한 것도 있다. 서모커플은 시정부다 적게 잡혀 광범위한 온도측정이 가능하나 원리적으로 상온부근의 오차가 크다. 서미스터는 사용온도 범위가 비교적 좁고 시정수도 서모커플에 비하여 크나 상온부근에서 정도는 높다.