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      • KCI등재

        Bt 양배추가 복숭아혹진딧물의 발육과 기주선택에 미치는 영향

        남기정,김영중,문두범,남경희,백인순,박정호,정순천,한지학,김창기,Nam, Ki Jung,Kim, Young-Joong,Moon, Doo-Bum,Nam, Kyong-Hee,Pack, In Soon,Park, Jung-Ho,Jeong, Soon-Chun,Harn, Chee Hark,Kim, Chang-Gi 한국응용곤충학회 2014 한국응용곤충학회지 Vol.53 No.2

        해충저항성 유전자변형 작물은 대상 해충에 대한 방제 효과를 증진시킬 수 있는 효과적인 수단이 될 수 있지만, 생태계 내의 다른 비표적 생물에 부정적인 영향을 줄 가능성 또한 있기 때문에 상업적인 재배에 앞서 이에 대한 충분한 연구가 이루어져야 한다. 본 연구에서는 배추좀나방내성 유전자변형 Bt (Cry1Ac1)양배추가 비표적 곤충인 복숭아혹진딧물에 미치는 영향을 알아보기 위한 기초적인 실험으로서 기주선택실험 및 성장실험을 실시하였다. 기주선택실험에서, 두 개체씩의 Bt 양배추와 모본 양배추에 각각 10마리의 유시 성충(alate virginoparae)을 접종하고, 사흘간 생식(reproduction) 기회를 제공한 후 생산한 약충의 마리수를 측정한 결과, Bt 양배추와 모본 양배추에 낳은 약충의 수가 각각 $21.9{\pm}1.8$와 $22.5{\pm}2.2$로 비슷하였다. 성장실험에서, 갓 태어난 무시 약충(apterous virginoparae)을 Bt 양배추 및 모본 양배추를 기주로 하여 키웠을 때, 성충이 될 때까지 걸린 시간은 Bt 양배추와 모본 양배추에서 각각 $5.8{\pm}0.2$, $5.9{\pm}0.1$ 일(day)로 통계적으로 유의한 차이가 없었고, 개체군 생장률(rm) 또한 $0.7{\pm}0.1$, $0.8{\pm}0.1$로 유사하였다. 이상의 결과들로 볼때 Bt 양배추가 복숭아혹진딧물에 미치는 영향이 없거나 미미함을 알 수 있으나, 다양한 관점에서의 보완 연구가 더 필요하다. Transgenic crops that produce insecticidal toxins have a great potential for controlling target pest insects, but there is a growing concern about unintended influences on non-target species. In the present study, the preferences and performance of non-target green peach aphid, Myzus persicae (Sulzer), on transgenic cabbages (Brassica oleracea) that produce Bt toxin (Cry1Ac1) and untransformed control plants were investigated as a part of risk assessment. In a free-choice situation, the number of nymphs larviposited by 10 winged adults over 3 days was $21.9{\pm}1.8$ and $22.5{\pm}2.2$ on transgenic and the control plants, respectively, indicating that the aphids did not discriminate between the two types of plants. In a performance assay, the development time (D) and intrinsic rate of increase (rm) of wingless aphids reared on transgenic and control plants were also similar (D, $5.8{\pm}0.2$ and $5.9{\pm}0.1$ (days) and rm, $0.7{\pm}0.1$ and $0.8{\pm}0.1$, for transgenic and control plants, respectively). These results suggest that M. persicae is not significantly affected by transgenic Bt cabbage.

      • KCI등재
      • KCI등재

        푸시업 운동 시 팔 간격에 따른 대흉근과 상완삼두근의 근활성도 비교 분석

        남기정(Nam, Ki-Jeong),지정민(Ji, Jeong-Min),홍형(Hong, Hyung),김현수(Kim, Hyun-Soo),이종훈(Lee, Chong-Hoon) 한국체육과학회 2018 한국체육과학회지 Vol.27 No.4

        The purpose of this study was to analysis of electromyogram of Pectoralis Major and Triceps Brachii during Push-Up Exercise. With these purposes in consideration, a total of 9 male were recruited to participate. The experiment was performed push-up exercise during one minute(with 5 min break-time) while the EMG data was recorded and analyzed. EMG surface electrodes were attached two muscles(Pectoralis Majoj; PM and Triceps Brachii; TB). Results show that there were significant differences between PM and TB during push-up exercise at 120% shoulder width. It is concluded that the push-up exercise at 120% shoulder width is only effective exercise for developing PM.

      • KCI등재
      • KCI우수등재
      • 달리기 시 성별과 전투화 착용에 따른 생체역학적 비교

        남기정 ( Nam Ki Jeong ),김진만 ( Kim Jinman ),박영숙 ( Park Young Suk ) 국군의무사령부 2012 대한군진의학학술지 Vol.43 No.1

        With the increase in running population, injuries during exercise associated with it are also becoming a problem, as the yearly injury rate of the running population nears almost 50%, and 70~80% of all injuries have taken place in parts below the knee (Johnston, Taunton, Lloyd-Smith and McKenzie, 2003). The maximum vertical impact exerted on the landing foot while running, which generally ranges from two to three times the weight, is passed on straight through the feet to put load on joints, tendons and ligaments, and overpronation caused by landing often lead to running injuries including shin splints, chondromalacia, plantar facities and Achilles tendinitis (Clement, Taunton, Smart and Mcnicol, 1981; Messier and Pittala, 1988). While various types of running shoes and hiking boots designed to prevent such running injuries are being commercialized, the Army boots still insist on durability as opposed to functionality or comfortability, since protecting the lower extremity enables the wearers to perform even under the worst circumstances (Choi and Kim, 2001). As a result, running or walking for an extended period of time in Army boots puts significant load on the lower extremity and provides the potential to cause injuries, and there seems to be a necessity to investigate the effects of running in Army boots on the lower extremity. To achieve the objective of this study, PSD, MVGRF and angle variables were calculated based upon experiments involving 5 male and female subjects each. No significant difference in the acceleration variable was observed between the male group and the female group, while the Army boots showed significantly greater acceleration variable than the running shoes within the female group. The female group showed relatively higher MVGRFs than the male group, although the difference was not significant. Higher MVGRFs were observed in Army boots than in running shoes or hiking boots for both groups. Greater ankle inversion angles were observed in running shoes compared to the Army boots in both groups.

      • KCI등재

        플랭크와 브릿지 동작의 근전도 비교 분석

        남기정(Nam, Ki-Jeong),이다혜(Lee, Da-Hye),정준수(Jung, Joon-Su),허진이(Heo, Jin-Yi),이종훈(Lee, Chong-Hoon) 한국체육과학회 2018 한국체육과학회지 Vol.27 No.1

        The purpose of this study was to analysis of electromyogram of Plank and bridge exercise. With these purposes in consideration, a total of 9 male were recruited to participate. The experiment was performed plank and bridge exercise during one minute(with 5 min break-time) while the EMG data was recorded and analyzed. EMG surface electrodes were attached six muscles(Biceps Brichii; BB, Triceps Brichii; TB, Rectus Abdominis; RA, Latissimus Dorsi; LD, Rectus Femoris; RF, Gluteal Muscles; GM). Results show that there were significant differences between plank and bridge exercise. Five of total muscles(BB, TB, RA, LD, RF)were significant higher IEMG levels at the plank exercise than the bridge exercise. However, GM were only high activated at the bridge exercise. It is concluded that the plank is effective exercise for developing muscles.

      • KCI등재

        계단을 올라가는 구간과 내려오는 구간의 근육 활성도 차이

        남기정(Nam, Ki-Jeong),이종훈(Lee, Chong-Hoon) 한국체육과학회 2017 한국체육과학회지 Vol.26 No.1

        The purpose of this study was to analyse diffrences of EMG in Up-stair gait and Down-stair gait. With these purposes in consideration, a total of 8 male were recruited to participate. The experiment was performed three gait(general gait, Up-stair gait and Down) while the EMG data was recorded and analyzed. Results show that there were significant differences between Up-stair gait and Down. All leg muscles(the rectus femoris, biceps femoris, anterior tibialis and soles of both side)were significant higher IEMG levels at the Up-stair gait than Down-sair gait. In gait and Up-stair gair, the highest muscle activity is anterior tibialis, however the rectus femoris were high activated at the down-stair gait. The leg muscles activity is higher 2-9 multiply Up-stair gait than flat-gait. All things considered, Up-stair gait makes more using leg muscles than down-stair gait. It is concluded that uo-stair gait is effective exercise for developing leg muscles.

      • KCI등재

        일본의 베트남전쟁 -"기지국가"의 "평화운동"과 "평화외교"

        남기정 ( Ki Jeong Nam ) 한국사회사학회 2015 사회와 역사 Vol.0 No.105

        이 연구는 일본이 겪은 베트남전쟁을 일본의 후방기지화, 시민사회에서 일어난 반전평화운동의 전개, 일본 정부의 평화외교의 전개 등 세 가지 층위에서 일어난사안에 주목하여 종합적으로 분석한 것이다. 베트남전쟁이 발발하자, 우선 일본은 한국전쟁에서와 마찬가지로 미국이 수행하는 전쟁의 후방기지가 되었다. 오키나와는 베트남전쟁 시기에 일본에 반환되었으나, 베트남전쟁을 배경으로 전진기지의 역할이 강화되었다. 이러한 사실들은 한국전쟁 시기에 형성된 ‘기지국가’의 현실을 고착화시켰다. 다음으로 베트남전쟁이 본격화하자 일본에서는 여러 주체가 교차하면서 반전평화운동이 고양되었다. 공산당과 사회당 등 기성 좌익이 국민의 고양된 반전 의식을 적절히 견인해 내지 못하는 가운데, 전공투와 베평련 등 학생과 시민을 중심으로 한 새로운 반전운동이 전개되었다. 그 과정에서 일본인과 베트남 인민과의 연대의 문제는 기피 또는 회피되는 주제가 되어가고 있었다. 한편 일본 정부는 고양된 반전운동을 배경으로 대미자주외교의 기회를 엿보며, 평화외교를 전개하고 북베트남을 상대로 국교정상화를 일궈냈다. This paper analyzes Japan’s experience of the Vietnam War by focusing on the nation’s three wartime sociopolitical developments: the consolidation into a logistic state, the proliferation of anti-war civic movement, and the expansion of the peace diplomacy. Firstly, with the escalation of the Vietnam War, Japan, just like it did so amid the Korean War, turned into a logistical base of the United States. While Okinawa was returned to Japan during the war against Vietnam, the island nonetheless had been fortified and utilized as the American forces’ forward operating base. Under such circumstances, Japan had become what is called the ‘military base state.’ Secondly, the war had ignited various types of anti-war civic movement. New left groups, such as Zenkyoto or Beheiren, played a pivotal role in concentrating widespread anti-war sentiment and organizing the movements. These groups had replaced the Japanese Communist Party or Socialist Party who used to lead the leftist peace movement. Lastly, riding on the public sentiment, the Japanese government tried to develop its independent notion of foreign policy against the United States. With such an effort, Japan was able to promote the peace diplomacy and to succeed in normalizing the diplomatic relations with North Vietnam. To sum up, postwar Japan’s peace diplomacy was a projection of the reality of a military base state into the foreign policy under the proliferation of the peace movements within the civil society. Here, we can find the tripartite connection among the ‘military base state’, the ‘peace movement’, and the ‘peace diplomacy’, together which form the postwar regime of Japan, or the ‘sengo rejimu’. In the meantime, we can also find significant omission of the introspection of postwar Japan on its relations with Asia. This omission is primarily due to the national perspective in which Japan recognizes the Vietnam War not as the war of their own, but rather the war of the United States.

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