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.

현대 건축에 나타난 조적식 축조 방식 변화에 관한 연구

남기정(Nam, Ki-Jung),전유창(Jeon, You-Chang),김성욱(Kim, Sung-Wook) 대한건축학회 2013 대한건축학회 학술발표대회 논문집 Vol.33 No.1

The Nature of the Secularization: Focusing on the Relationship between Religion and Science

Ki Jung Nam(남기정) 감리교신학대학교 2019 신학과세계 Vol.- No.97

막스 베버는 ‘세속화’를 모던 세계 사람들의 삶 속에서 종교의 영향력이 줄어드는 현상으로 정의하고, 과학의 발달이 종교의 영향력 감소를 가져온다고 주장하였다. 이 주장은 한동안 정설처럼 받아들여져 왔다. 그런데, 20세기 후반의 종교 현상을 연구한 학자들의 주장은 이 주장의 정당성에 대하여 다시 생각하게 한다. 이 논문은 이런 최근 학자들의 주장들 중 폴 프로세, 피파 노리스와 롤란드 잉글하트, 찰스 테일러 주장을 탐구하였다. 베버의 주장과 비교하기 위해, 세속화를 종교의 영향력 감소로 정의하는 것이 과연 타당한가, 그리고 과학의 발달은 종교의 감소를 초래하는가, 이 두 질문을 중심으로 위의 학자들의 논의를 정리하였다. 이러한 논의들은 과학의 발달과 이에 따른 문화의 변화 속에서도 인간의 종교에 대한 요구는 꾸준히 지속되고 있다는 점을 보여준다. 그러므로 세속화를 종교의 영향력 감소로만 보는 것은 타당하지 않다. 이러한 연구 결과들에 근거하여 필자는 현대 사회에서 종교는 감소하는 것이 아니라 변화하고 있다고 보아야 한다고 주장한다. 종교적 제도, 그것의 권위와 영향력, 공공 영역에서의 종교 행사 등의 측면에서 종교는 감소하고 있는 것처럼 보인다. 하지만, 여기서 거론된 학자들의 논의에서 본 바와 같이, 개인들의 종교성과 대중들이 느끼는 종교의 필요성은 결코 사라지지 않고 지속적이다. 그러므로, 종교의 세속화에 관한 논의는 종교의 감소가 아니라, 새로운 환경 속에서의 종교의 변화의 가능성을 다루는 것이 되어야 한다. The author explores the recent debate over secularization as a critical discourse on the changes in religion in modern society. More specifically, he explores the assertions of several scholars who have discussed secularization, focusing on the relationship of religion to science. Max Weber, who defined secularization as the decline of the influence of religion in modern life, claimed that in modern society religion would decline due to scientific advancement. The Weberian thesis was accepted as “a common knowledge” among social scientists for several decades. However, based on observations of contemporary religious culture, many scholars have raised questions regarding the legitimacy of this thesis. Scholars have debated the nature of the changes in religion and the reasons for these changes. The author summarizes four scholars’ attempts to revise the Weberian thesis: Paul Froese, Pippa Norris and Ronald Inglehart, and Charles Taylor. The article raises two questions: Is secularization or the change in religion in modernity characterized by a decline in religion? Is the advancement of science the reason for the decline? The author addresses some scholars’ responses to these questions. Taking their claims into account, he argues that religion has been transformed, not diminished, as a result of the advances in science and other influences of modernity. As an institution, as an authority that controls people’s lives, public practices, and social power, religion seems to be declining in the modern era. However, religiosity as an individual religious need is not disappearing but instead persists. Therefore, theories of secularization should incorporate the possibility of the transformation of religion, not merely view religion as in decline.

스포츠산업과 운동역학 : 드롭랜딩 시 backpack 중량 변화에 따른 충격흡수기전

남기정 ( Ki Jeong Nam ),신인식 ( In Sik Shin ),서정석 ( Jung Suk Seo ),최치선 ( Chi Sun Choi ) 한국운동역학회 2005 한국운동역학회 추계학술발표논문집 Vol.2005 No.-

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.

2011 대구세계육상선수권대회 남자 멀리뛰기 경기의 운동학적 분석

서정석 ( Jung Suk Seo ),우상연 ( Sang Yeon Woo ),김용운 ( Yong Woon Kim ),남기정 ( Ki Jeong Nam ),박용현 ( Young Hyun Park ),김호묵 ( Ho Mook Kim ) 한국운동역학회 2011 한국운동역학회지 Vol.21 No.5

The long jump motion of 8 finalist of men`s long jump of IAAF World Championships Daegu 2011 were analysed and the kinematic characteristics of the technique were investigated. The kinematic characteristics of long jump motion of 8 finalist were as follows. In the run-up phase, the average length of 3, 2, and 1 stride were 2.21±0.08 m, 2.46±0.18 m, and 2.19±0.16 m, respectively. The change in the height of the center of gravity was 0.09 ± 0.02 m. The average velocity of 3, 2, and 1 stride was 10.37±0.32 m/s, 9.63±0.32 m/s, and 10.69±10.69 m/s, respectively. In the take-off phase, the horizontal velocity, the vertical velocity, the reduction of horizontal velocity was 9.00±0.37 m/s, 3.04±0.27 m/s, and 1.69±0.34 m/s, respectively. The minimum knee angle and the take off angle was 157±6.57° and 18.5±2.24°, respectively. In the flight phase, the flight time and the maximum height of the center of gravity was 0.82±0.05 s, and 1.70±0.10 m, respectively. In the landing phase, the landing length was 0.51±0.06 m. The body angle, the knee angle, and the hip angle was 71±20.93°, 136±19.19°, and 85±9.58°, respectively. The kinematic characteristics of long jump motion with good record were shown as follows, The reduction of the horizontal velocity in the take-off phase was minimized while the velocity of the run-up were maximally maintained, The vertical velocity in the take-off phase was increased with rapidly extended knee and the high center of gravity.

미세먼지와 식물의 상호작용: 국내외 연구동향 및 생태적 영향 고찰

손민정,남기정,Son, Min-Jeong,Nam, Ki-Jung 한국하천호수학회 2020 생태와 환경 Vol.53 No.4

대기 중 미세먼지가 환경과 인간의 공중 보건에 악영향을 미치고 있다는 사실은 점점 명확해지고 있다. 미세먼지가 식물의 잎에 침착, 흡수되므로 식물이 미세먼지를 제거하는 바이오필터로 활용하기 위한 연구들이 활발히 진행되고 있다. 또한, 식물에 흡수된 미세먼지는 식물에 다양한 생리적, 형태적 영향을 미치게 된다. 본 연구는 식물과 미세먼지간의 상호작용에 대해 국내외에서 수행되어온 연구들의 방법과 결과를 특히 생태적 관점에서 종합 정리하였다. Airborne particulate matter (APM) is increasingly recognized that it has adverse impacts on environment and human public health. As plants can have a potential to reduce APM significantly by its deposition on leaves, considerable efforts has been made to use them as a biofilter. However, APM accumulation on plants can induce physiological and morphological alterations in plants. The present review aimed to synthesize the methods and results of the recent relevant research on interactions between plants and APM, especially from an ecological perspective, and briefly took into account the current status in Korea on this actively increasing research area.

금속 벨로우즈 Diaphragm용 CAD 프로그램 개발

조해용,남기정,오병기,김영훈,이제훈,서정,Cho, Hae-Yong,Nam, Gi-Jung,Oh, Byung-Ki,Kim, Young-Hun,Lee, Jae-Hun,Suh, Jung 대한기계학회 2003 大韓機械學會論文集A Vol.27 No.3

A CAD program for metal bellows diaphragm was developed in this study. This program was written in AutoLISP on the AutoCAD system with a personal computer. Basic design concept used in this program is composition of a convolution that is tangent to two lines and 5 circles from given design parameters(initial radius, inner and outer diameter, thickness, pitch, etc.). The effects of altering some design parameters on stress distribution and fatigue life of bellows were estimated using commercial FEM code, NISAII. As a result, the metal bellows diaphragm was successfully designed by the CAD program. It is used to model a bellows geometry in pre-processor of FEM code. The FEM result shows that stress is dependent on straight line length, bellows diameter with same span, and fatigue life is also affected by design parameters.

고염과 건조 스트레스 처리 조건 동안 양초 유식물체의 항산화효소 활성 분석

심동환(Donghwan Shim),남기정(Ki Jung Nam),김윤희(Yun-Hee Kim) 한국생명과학회 2018 생명과학회지 Vol.28 No.7

본 연구에서는 화본과 다년생 식물인 양초의 환경 스트레스에 대한 적응 기작을 이해하기 위해, 과산화수소를 제거하는 주요 항산화효소인 peroxidase (POD), ascorbate peroxidase (APX) 및 catalase (CAT) 활성의 변화를 고염과 건조 스트레스 조건에서 조사하였다. 300 mM 이상의 NaCl과 40% PEG 처리에서 양초 유식물체의 지상부와 지하부의 생장이 크게 감소하였다. 항산화효소 수준은 양초 유식물체의 지상부에서 CAT 활성이 높았지만, APX와 POD는 지하부에서 높은 활성 수준을 보였다. 실제로 NaCl과 PEG 처리동안 APX 활성은 지상부와 지하부가 모두 증가하였으며, CAT 활성은 지상부만 증가하였다. 또한 고염 조건에서 양초식물체의 지상부와 지하부 모두에서 전체페놀 함량이 증가하였다. 본 연구의 결과로서, 양초의 유식물체의 지상부 및 지하부의 생장이 과산화수소를 제거하는 항산화효소활성에 의해 조절됨을 알 수 있었으며, 이는 뿌리에서 APX 활성의 증가 및 지상부에서 CAT 활성증가와 같은 효소활성의 조직 특이적 증가에 영향을 받음을 알 수 있다. 본 연구의 결과는 전형적인 사막지역을 포함하는 고염 지역에서 양초 유식물체의 생장을 위해 항산화 방어기작이 중요함을 의미하는 바이다. To understand the adaptability of Leymus chinensis forage grass to environmental stresses, we analyzed the H₂O₂ scavenging activity based on several antioxidant enzymes and total phenolics content, including peroxidase (POD), ascorbate peroxidase (APX), and catalase (CAT), in shoots and roots subjected to salt and dehydration stresses during seedling growth. After NaCl or PEG treatment, plants showed reduced seedling growth under over 200 mM NaCl or 30% PEG treatment condition in shoots and roots compared with the control condition. In addition, plants showed high enzymatic activity of CAT in the shoots, whereas they exhibited high activity levels of APX and POD in the roots in both the NaCl and PEG treatment conditions. These results seem to indicate that Leymus chinensis seedlings responding to salt and dehydration stresses during initial growth is associated with enhanced activity of H₂O₂ scavenging antioxidant enzymes in the shoots or roots. The plants also showed high levels of total phenolics under NaCl treatment, with a high concentration in both the shoots and roots. Our results showed that the induced activity patterns of APX in the roots and CAT in the shoots indicate that low H₂O₂ levels were mainly maintained through tissue-specific redox homeostasis involving enzymes such as APX and CAT during salt and dehydration stresses. This study highlights the importance of antioxidant enzymes in the establishment of Leymus chinensis seedlings under high salinity conditions, such as typical desertification.

엘리트 카약 선수들의 에르고미터를 이용한 로잉 동작 시 안장과 페달의 거리가 로잉 패턴 및 근 활성도에 미치는 영향

류재진 ( Jae Jin Ryue ),남기정 ( Ki Jung Nam ),이종훈 ( Chong Hoon Lee ) 한국운동역학회 2012 한국운동역학회지 Vol.22 No.1

The purpose of this study was to identify the saddle to pedal length contributing to successful performance in kayak using a kayak ergometer. Ten male elite kayak players participated in this study. players were tested on the kayak ergometer which was varied saddle to pedal length by the knee flexion angle (90deg; 120deg; 150deg) to measure stroke frequency, paddling amplitude, joint angle, RoM and angular velocity, foot pressure and force, iEMG using the 3D motion system, foot pressure system and EMG wireless system, At a results, rowing at 120deg on knee flexion angle showed higher stroke frequency and paddling amplitude than other knee flexion angles. RoM at upper extremity showed not significant difference between knee flexion angles. But there were significant differences in thorax and pelvis rotation RoM, knee flexion-extension RoM in each condition. In addition, foot pressure, force and iEMG were significantly different in knee flexion angles. Study showed that changed of saddle to pedal length affected rowing performance kinds of stroke frequency, paddling amplitude. The most important thing, increased range of motion in pelvic and thorax has occurred by force that generated foot-bar to seat. Not only that, but it seems to be attributed to a technical adaptation developed to maximum rowing performance.