예정지관리 재배작물에 따른 유기재배 인삼의 생육시기별 미량원소 성분함량 및 흡수량 비교분석

안복주,김도현,김민수,안희정,송범헌,박기춘,차선우,김기홍 한국약용작물학회 2014 한국약용작물학술대회 발표집 Vol.2014 No.10

예정지관리 재배작물에 따른 유기재배 인삼의 연생별 주요생육 특성 및 조기낙엽시기 비교분석

안복주,김도현,김민수,안희정,송범헌,박기춘,차선우,김기홍 한국약용작물학회 2014 한국약용작물학술대회 발표집 Vol.2014 No.05

예정지관리 재배작물에 따른 유기재배 인삼의 생육시기별 미량원소 성분함량 및 흡수량 비교분석

안복주(Bok-Ju Ahn),김도현(Do-Hyun Kim),김민수(Min-Su Kim),안희정(Hee-Jung Ahn),송범헌(Beom-Heon Song),박기춘(Kee-Choon Park),차선우(Sun-Woo Cha),김기홍(Ki-Hong Kim) 한국약용작물학회 2014 한국약용작물학회 학술대회논문집 Vol.2014 No.2

토당귀 종자의 형태적 특성과 발아와 입모율에 대한 저장방법,생장조절제 및 프라이밍 처리 효과

안희정,안복주,·김도현,·안영섭,·김영국,박춘근,이상원,·박충범·차선우,·송범헌, 忠北大學校 農業科學硏究所 2015 農業科學硏究 Vol.31 No.1

This study was conducted to have basic and applied informations to establish the cultivation method and to improve the cultivation techniques of Angelica gigas Nakai through investigating the rates of germination and seedling establishment with treatment of plant growth regulator and seed priming. The germination rates of round shape seed were about 0.3~12% higher than those of parallel shape. The germination rates with different storage durations were increased at the level of 25oC and 4oC with the storage days, while they were clearly higher at -20oC compared to those at 4oC and 25oC without the storage durations. With the results of germination rates with treating of plant growth regulator and seed priming, their rates with the round shape seeds were comparatively higher about 6% than those with parallel shape seed and they were increased with increasing of the storage durations. The germination rates were generally appeared higher with GA3 than did those with seed priming. The highest germination rate was appeared at 50 ppm GA3 of plant growth regulator and at -0.5 MPa PEG6000 of seed priming. The germination rates?ㅤ ?ㅤ of Angelica gigas were different with different temperature, storage durations and the treatments of plant growth regulator and seed priming. These results could be used according to different cultivating conditions.

생장조절제와 프라이밍 처리에 의한 지치종자의 발아특성과 단백질 발현 양상에 관한 연구

김도현,안복주,안희정,안영섭,김영국,박춘근,박충범,차선우,송범헌 한국약용작물학회 2014 韓國藥用作物學會誌 Vol.22 No.6

This study was conducted to investigate the quality of seeds, the germination rates and the days required for germination, to examine the patterns of protein expressions during the germination and to improve the techniques of managing and storing seeds and viability of the seeds of Lithospermum erythrorhizon Sieb. et Zucc. After collecting and harvesting seeds, they were classified to white and brown colors of seed coat through testing their seed size, weight, and quality. The germination rates, the days required for germination, and the protein expressions were examined with different colors of seed coats, storing temperatures and durations by treating the different plant growth regulators and primings. One hundred seed weight of white color was heavier about 1.17 g than those of brown one about 0.81 g. The germination rates in white color of seed coat was higher, 3.05 ~ 5.75%, than those in brown one. Its rates were decreased with getting longer in storage durations. There was no big differences on germination rates between storage temperatures. The plant growth regulator of GA3 and Kinetin was affected to improve the seed germination. GA3 increased the seed germination clearly at 25 ppm level, while kinetin increased it gradually from 25 to 100 ppm levels. In germination by seed primings, PEG6000 made higher germination rate with increasing their levels, whereas KNO3 increased the germination until 100 mM level and then decreased it with 200 mM unlike PEG6000. The protein expressed during the seed germination were appeared more and clearer bands in the seed after germination, especially 20 ~ 30 kDa, compared to those in the seed before germination. These results showing more and clearer bands were positively related to the germination rates which were different by seed colors, storage temperatures and durations, and plant growth regulators and primings.

광대역 응용을 위한 6~10 GHz InGaAs 0.15 μm pHEMT 27 dBm급 전력증폭기

안현준(Hyun-Jun Ahn),심상훈(Sang-Hoon Sim),박명철(Myung-Cheol Park),김승민(Seung-Min Kim),박복주(Bok-Ju Park),어윤성(Yun-Seong Eo) 한국전자파학회 2018 한국전자파학회논문지 Vol.29 No.10

본 논문에서는 InGaAs enhancement mode 0.15 μm pHEMT를 이용하여 6~10 GHz 대역에서 동작하는 wide-band 전력증폭기를 설계하였다. Enhancement 소자는 gate 바이어스를 양전압으로 사용하며, 음전압을 위한 추가회로 구성이 없어지며 모듈의 크기를 줄일 수 있다. 또한, 본 설계에서는 3D-EM(electromagnetic) 시뮬레이션을 통해 패키지 본드와이어의 인덕턴스 및 기판 손실을 예측하여 설계하였다. 광대역을 위해 lossy matching을 사용하고, 전력, 효율 관점에서 최적의 바이어스를 선정하여 설계하였다. 제안한 전력증폭기의 패키지 칩은 6~10 GHz 대역에서 20 dB 이상의 평탄 이득, 8dB 이상의 입출력 반사손실, 출력전력은 27 dBm 이상, 전력부가효율은 35 % 이상으로 측정되었다. A 6~10 GHz wide-band power amplifier was designed using an InGaAs enhancement-mode(E-mode) 0.15 μm pseudomorphic high-electron-mobility transistor(pHEMT). The positive gate bias of the E-mode pHEMT device removes the need for complex negative voltage generation circuits, therefore reducing the module size. The wire bond and substrate loss parameters were modeled and extracted using a three-dimensional electromagnetic(3D EM) simulation. For wideband characteristics, lossy matching was adopted and the gate bias was optimized for maximum power and efficiency. The measured gain, in/output return loss, output power, and power-added efficiency were greater than 20 dB, 8 dB, 27 dBm, and 35 %, respectively, in the 6~10 GHz band.

광대역 응용을 위한 6~10 GHz InGaAs 0.15μm pHEMT 27 dBm급 전력증폭기

안현준,심상훈,박명철,김승민,박복주,어윤성,Ahn, Hyun-Jun,Sim, Sang-Hoon,Park, Myung-Cheol,Kim, Seung-Min,Park, Bok-Ju,Eo, Yun-Seong 한국전자파학회 2018 한국전자파학회논문지 Vol.29 No.10

A 6~10 GHz wide-band power amplifier was designed using an InGaAs enhancement-mode(E-mode) $0.15{\mu}m$ pseudomorphic high-electron-mobility transistor(pHEMT). The positive gate bias of the E-mode pHEMT device removes the need for complex negative voltage generation circuits, therefore reducing the module size. The wire bond and substrate loss parameters were modeled and extracted using a three-dimensional electromagnetic(3D EM) simulation. For wideband characteristics, lossy matching was adopted and the gate bias was optimized for maximum power and efficiency. The measured gain, in/output return loss, output power, and power-added efficiency were greater than 20 dB, 8 dB, 27 dBm, and 35 %, respectively, in the 6~10 GHz band. 본 논문에서는 InGaAs enhancement mode $0.15{\mu}m$ pHEMT를 이용하여 6~10 GHz 대역에서 동작하는 wide-band 전력증폭기를 설계하였다. Enhancement 소자는 gate 바이어스를 양전압으로 사용하며, 음전압을 위한 추가회로 구성이 없어지며 모듈의 크기를 줄일 수 있다. 또한, 본 설계에서는 3D-EM(electromagnetic) 시뮬레이션을 통해 패키지 본드와이어의 인덕턴스 및 기판 손실을 예측하여 설계하였다. 광대역을 위해 lossy matching을 사용하고, 전력, 효율 관점에서 최적의 바이어스를 선정하여 설계하였다. 제안한 전력증폭기의 패키지 칩은 6~10 GHz 대역에서 20 dB 이상의 평탄 이득, 8 dB 이상의 입출력 반사손실, 출력전력은 27 dBm 이상, 전력부가효율은 35 % 이상으로 측정되었다.

비대면 실기영상 강의에서 스트릿댄스 전공 대학생이 인식하는 학습 실재감이 학습 만족도 및 학습 지속 의향에 미치는 영향

문복주(Moon, Bok-Ju),안민주(An, Min-Ju) 한국웰니스학회 2023 한국웰니스학회지 Vol.18 No.1

본 연구의 목적은 코로나19 상황에 실시된 비대면 실기영상 강의를 수강한 스트릿댄스 전공자들이 인식하는 학습 실재감과 학습 성과(학습 만족도, 학습 지속 의향)에 어떠한 영향을 미치는 지를 알아보는 것이다. 본 연구대상자들은 2021학년도 1학기에 G시에서 활동하는 스트릿댄스 전공의 비대면 실기강의 경험이 있는 4년제 일반대학 2,3,4학년 대학생으로 선정하였으며, 160부의 설문지를 통계분석한 후 다음과 같은 결론을 도출하였다. 첫째, 학습자가 인식한 인지적 실재감은 학습 만족도와 학습 지속 의향의 하위변인의 모든 요소에서 유의하게 영향을 미쳤음을 알 수 있었다. 둘째, 학습자가 인식한 감성적 실재감은 학습 만족도에는 부분적으로 영향을 미쳤으나 학습 지속 의향에는 유의하게 영향을 미침을 알 수 있었다. 셋째, 학습자가 인식한 사회적 실재감은 하위변인 중 응집력에서만 학습만족도와 학습 지속 의향에 유의한 영향력이 있는 것으로 나타났다. 본 연구는 비대면 강의 중 실기영상 강의와 스트릿댄스 전공자가 인식하는 특수성에 집중하여 학습 실재감 별로 학습 만족도와 학습 지속 의향의 관계를 규명했다는 데 의의를 가진다. 종합적으로, 본 연구를 통한 학습 실재감과 학습 성과에 대한 유의한 영향력의 결과에 대입해보면 학습 성과를 높일 수 있는 학습 실재감의 구축 및 지원으로 저평가 되어 있는 비대면 영상강의가 긍정적인 방향으로 받아들여 질 수 있을 것으로 사료된다. The purpose of this study is to investigate the relationship between the learning presence and learning performance (learning satisfaction, willingness to continue learning) perceived by university students majoring in street dance who took non-face-to-face practical video lectures conducted in the COVID-19 situation. The subjects of this study were selected as students majoring in street dance in 4-year general university in G city who had experience of non-face-to-face practical lectures in the first semester of 2021. The following conclusions were drawn through statistical analysis of 160 questionnaires. First, it was found that the cognitive presence perceived by learners had a significant effect on all sub-variables of learning satisfaction and willingness to continue learning. Second, it was found that the emotional presence perceived by the learners had a partial effect on the learning satisfaction, but had a significant effect on the willingness to continue learning. Third, it was found that the social presence perceived by learners had a significant influence on learning satisfaction and willingness to continue learning only in cohesiveness among the sub-variables. This study has significance in that it identified the relationship between learning satisfaction and willingness to continue learning by learning presence, focusing on the specificity of non-face-to-face practical video lectures and university students majoring in street dance. Overall, the result of this study suggest that the underestimated non-face-to-face practical video lectures can be accepted in a positive direction as the formation and support of learning presence that can increase learning performance.

인삼의 연생, 생육시기 및 식물체 부위별 수용성과 불수용성 탄수화물 함량과 합성저장량 비교

박성용,안복주,안희정,이경아,허수정,정햇님,송범헌 한국약용작물학회 2015 한국약용작물학회지 Vol.23 No.4

This study was carried out to have the basic and applied informations relating to develop the cultivation methods and to increase the productivity and quality of ginseng. 1 to 6 year old ginsengs of Jakyung cultivar were cultivated and the content and synthetic amount of carbohydrates were investigated with different plant tissues, growth stages, and years old. The concentration of total carbohydrates at six year old ginseng including water soluble and water insoluble carbohydrates was about 18.9%, 42.9%, and 43,6% in leaves, tap roots, and lateral roots, respectively. Water soluble carbohydrate of tap and lateral roots was slightly decreased from August until September, and then increased on November, whereas its water insoluble carbohydrate was increased from August to September and then decreased on November. Comparing with the content of carbohydrates of 1 to 6 year old ginsengs, it was continuously increased from one year old ginseng until five year old ginseng, however it was not increased much in six year old ginseng. The highest content of carbohydrates was at five year-old in all tissues of ginseng. Water soluble and water insoluble carbohydrates were significantly shown different in leaves, stems, tap roots, and lateral root at different growth stages and with different years old. The content of water soluble carbohydrate in the leaves was remarkedly higher compared to that of water insoluble carbohydrate, while in the root the content of water insoluble carbohydrate was clearly higher compared to the water soluble carbohydrate. Comparing with the synthetic amount of carbohydrates, water soluble carbohydrates was higher in the shoot than that in the root, whereas water-insoluble carbohydrates higher in the root than that in the shoot. Carbohydrates which would be utilized in ginseng tissues for short and long-term periods as major energy were appeared differently in between shoot and root, with different growth stages, and years old.

생장조절제와 프라이밍 처리에 의한 우슬종자의 발아특성과 단백질 발현 양상에 관한연구

김도현,안복주,안희정,안영섭,김영국,박춘근,박충범,차선우,송범헌 한국약용작물학회 2015 한국약용작물학회지 Vol.23 No.1

This study was conducted to improve the postharvest storage techniques of managing and storing seeds, totest qualities and viabilities of the seeds and to examine the germination rate and the protein expression of Achyranthesjaponica Nakai. The seeds collected from different areas of Je-Cheon and Gwang-Ju were stored with different temperaturesand durations. Two plant growth regulators and two seed priming were treated to investigate their effect on the germinationrates and the days required for germination. The weight of one hundred seed collected in Gwang-Ju was heavier than thosein Je-Cheon. Seed length collected in Gwang-Ju was also longer about 5.12 ㎜ than those in Je-Cheon about 4.90 ㎜ andseed width was longer in Gwang-Ju than those in Je-Cheon. The rates of seed germination in two different collection areaswere higher about 2.9 to 13.0% in Gwang-Ju compared to those in Je-Cheon. Comparing its rates with the storing temperaturesand durations, they were not clearly different in between 4℃ and 25℃ and they also were gradually decreased withgetting longer storing durations. The germination rates treated by plant growth regulators were higher with GA3 than thosewith Kinetin. The highest seed germination rate was appeared at 50 ppm of GA3. Comparing its rates with different seedpriming, they were relatively higher with KNO3 than those with PEG6000. In protein expression patterns between before thegerminating and after the germinating of seeds, more and clear bands were appeared in the seed after the germination comparedto those before the germination of seeds, especially 10 ~ 20 kDa. These results showing more and clear bands weremore clearly appeared in Gwang-Ju compared to Je-Cheon. Comparing the protein expression with plant growth regulatorsand seed primings, GA3 was better expression than those with Kinetin and KNO3 was better than those with PEG6000. Moreand clear bands were closely related to the germination rates of seeds and more detailed studies would be required.