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맥류 바이러스병 발생 현황 및 BaYMV-Ik와 BnMMV에 대한 저항성 유전자의 반응
박종철,서재환,김양길,김정곤,Park Jong-Chul,Seo Jae-Hwan,Kim Yang-Kil,Kim Jung-Gon 한국작물학회 2005 Korean journal of crop science Vol.50 No.3
월동 후 맥류 재배지에서 나타나는 이상 증상으로는 주로 잎에 황화등의 변색과 모자이크성 반점 등이 조사되었다. 이들 증상을 가진 잎의 바이러스 검정 결과 $78\%$이상에서 바이러스 감염이 확인되었으며, 주로 BaYMV와 BaMMV에 의해 발생하였다. 전국일원의 맥류 재배지에서 4개년간 BaYMV, BaMMV SBWMV와 BYDV-MAV(2003년) 등 4종의 바이러스의 발생율을 조사한 결과 대상 바이러스 중 BaYMV가 가장 높은 감염율을 나타내었다. BaYMV는 조사 4개년 동안 평균 발생율이 $70\%$이상으로 전국적으로 큰 차이 없이 가장 높은 발생율을 보였다. 그러나 경기지역의 경우는 $20\%$정도로 다른 지역의 $65\~85\%$에 비해 낮은 발생율을 보였다. BaMMV는 전북, 전남, 경기, 강원, 경남지역에서 $20\~40\%$를 보인 반면, 경북, 충남, 경기지역에서는 발생이 적었다. SBWMV와 BYDV-MAV는 현재까지 국내 보리 재배지에서 다발생되고 있지는 않았다. 저항성 유전자원에 대해 바이러스에 대한 저항성 반응을 검정한 결과 BaYMV와 BaMMV가 단독 또는 복합 감염되는 형태로 나타났으며, SBWMV는 감염이 확인되지 않았다. 저항성 유전자별 반응을 검정한 결과에서 익산 발생하고 있는 BaYMV-Ik strain과 BaMMV에 대해 모두 저항성인 유전자는 확인되지 않았으나 국내 맥류 재배지에서 가장 발생이 많은 BaYMY-lk체 대해 저항성 반응을 보인 유전자는 Ishukushirazu, Chosen에 들어있는 rym 3, Tokushima Mochi Hadaka의 rym 4y 및 Hakei I-41의 rym 5a로 나타났다. 그러나 BaYMY-lk에 대해 저항성으로 확인된 rym 3, rym 4y 및 rym 5a의 경우 BaMMV에는 모두 감염이 확인되었으며, rym 1+5 두개의 저항성 유전자를 가지고 있으며 일본의 모든 BaYMV strain에 저항성인 Mokusekko 3도 감염이 확인되었다. 유전자에 따른 병징 발생 양상을 조사한 결과 일반적인 바이러스 병징과 같이 대부분 모자이크나 황화가 발생하였다. 그러나 저항성 유전자에 따라 고사, 괴사 반점, 조직 괴사, 줄무늬성 증상과 잎 말림등의 다양한 증상이 확인되었다. The major symptom such as yellowish and mosaic spots in overwintering barley were mostly caused by viruses such as Barley yellow mosaic virus (BaYMV) and Barley mild mosaic virus (BaMMV) in the nation-wide for four years. The result showed that more than $78\%$ collected samples were infected by the viruses. The incidence of Ba YMV was more than $70\%$, and relatively uniformly distributed in the southern regions of barley fields in Korea. However the incidence of BaYMV in Gyeonggi Province was as low as $19\%$ compared to $65\~85\%$ in the rest of regions. Occurrence of BaMMV varied depending on investigated regions such as $20\~40\%$ in Jeonbuk, Jeonnam, Gangwon and Gyeongnam, and a lower infection in Gyeongbuk, Chungnam and Gyeonggi Provinces. In this result, $60\%$ of BaMMV was found to be in the southwest regions of Korea such as Jeonbuk and Jeonnam Provinces. Over all, both BaYMV and BaMMV were thought to be dominantly casual agents in overwintering barley by either solely or mixed infections. Soil-borne wheat mosaic virus(SBWMV) occurred at most $14\%$ in Gyeonggi and Barley yellow dwarf virus-MAY (BYDVMAV) was found only one place in Jeonbuk, suggesting that SBWMV and BYDV-MAV were not significant diseases in Korea. Exotic genetic resources that possess different resistant genes to BaYMV and BaMMV were tested to identify the responses to the viruses occurred in Iksan. According to the ELISA results, BaYMV and BaMMV were infected in some plant materials but SBWMV was not identified. Any resistant gene was not effective to BaYMV-Ik (Insan strain) and BaMMY. Ishukushirazu (rym 3) and Chosen (rym 3), Tokushima Mochi Hadaka (rym 4y) and Hakei 1-41 (rym 5a) showed resistant response with little symptoms to BaYMY. The other five accessions possessing rym 1+5, rym 2, rym 4m, rym 5 and rym 9, respectively, were resistant to BaMMV. Various symptoms were observed in the tested plant materials such as not only yellowish and mosaic symptoms mostly but also necrotic spot, tissue necrosis, leaf stripe and leaf curling. However, it was difficult to find any relationship between resistant genes and specific symptoms.
박종철,김경태,서활,Park, Jong-Chul,Kim, Kyung-Tae,Suh, Hwal 대한의용생체공학회 1997 의공학회지 Vol.18 No.3
본 시험조사는 정형외과, 신경외과, 재활의학과 등에서 경부 척추를 물리적으로 고정하는 데 널리 사용되고 있는 연성, 토마스, 미네르바 및 필라델피아 경추보조기의 물성을 조사하여 새로운 경추보조기를 고안하기위한 기초자료를 얻기 위하여 이루어 졌다. 인장강도는 토마스 보조기가 가장 우수했으며 지속적인 마모를 통한 재료 관통시험에서는 미네르바 보조기가 가장 우수한 내구력을 가진 것으로 나타났다. 이러한 결과로 미루어 볼 때, 에틸렌수지를 구조체로 사용하고 피부에 통기성을 부여하기 위해 재료에 다공성을 제공하는 것이 좋을 것으로 사료된다. This is to investigate the physical properties of the commercially available Soft, Thomas, Minerva, and Philadelphia cervical braces which are widely used in orthopedics, neurosurgery, and rehabilitation medicine clinics as assisting devices for physical stabilization of cervical vertebrates, to use as a basic data for designing new type brace. Tensile strengths were observed by universal mechanical measuring device and Thomas brace required the highest stress to break by tensile stress. Durabilities against continuous frictional forces were also determined, and Minerva brace demonstrated the longest frictional time until being perforated. According to these results, poly ethlene is recommendable as a frame and preparation of pores in the material is favorable to provide ventilation to skin.
산소결핍 탄탈륨 산화물을 활용한 탄탈륨 산질화물 및 질화물 합성
박종철,피재환,김유진,최의석,Park, Jong-Chul,Pee, Jae-Hwan,Kim, Yoo-Jin,Choi, Eui-Seock 한국분말야금학회 2008 한국분말재료학회지 (KPMI) Vol.15 No.6
Colored tantalum oxy-nitride (TaON) and tantalum nitride ($Ta_{3}N_{5}$) were synthesized by ammonolysis. Oxygen deficient tantalum oxides ($TaO_{1.7}$) were produced by a titration process, using a tantalum chloride ($TaCl_5$) precursor. The stirring speed and the amount of $NH_{4}OH$ were important factors for controling the crystallinity of tantalum oxides. The high crystallinity of tantalum oxides improved the degree of nitridation which was related to the color value. Synthesized powders were characterized by XRD, SEM, TEM and Colorimeter.
PRISM, 역거리가중법, 공동크리깅으로 작성한 1km 공간해상도의 남한 강수 자료에서 강수 분포의 비교
박종철,김만규,Park, Jong-Chul,Kim, Man-Kyu 한국지리정보학회 2013 한국지리정보학회지 Vol.16 No.3
본 연구의 목적은 3 가지 보간 방법으로 생산한 남한 강수 자료에서 강수 분포의 차이를 비교하는 것이다. 보간된 강수 자료를 생태환경모델링, 수문모델링, 기후변화 영향평가 등의 연구에서 이용할 때 보간 방법에 따른 강수량의 차이는 중요한 정보이기 때문이다. 연구에는 기후변화정보센터에서 PRISM(Precipitation-elevation Regressions on Independent Slopes Model)으로 작성한 강수 자료와 본 연구에서 공동크리깅과 역거리가중법으로 작성한 강수 자료가 사용되었다. 보간된 강수 자료의 공간해상도는 1km이다. 보간 방법 선택에 의해 발생하는 강수량의 차이는 대체로 산지 유역의 자료에서 크다. 특히 군사분계선 주변과 소백산, 월악산, 덕유산, 지리산, 태백산지의 강수 자료에서 보간 방법의 차이에 따라 발생하는 월강수량의 차이는 약 10~20%, 또는 그 이상이었다. 이는 이 지역의 연구에 보간된 강수 자료를 이용할 때 연구에 채택한 보간 방법에 따라 최종 결과가 큰 영향을 받을 수 있다는 것을 의미한다. The purpose of this study is to compare precipitation distributions in precipitation data sets over South Korea produced by three interpolation methods. The differences of precipitation caused by interpolation methods is an important information when the interpolated precipitation data sets were used in researches such as ecological and hydrological modeling as well as regional climate impact studies. In this study, the precipitation data sets were produced by IDW(Inverse Distance Weighting) and Cokriging in this study and the PRISM(Precipitation-elevation Regressions on Independent Slopes Model) data set obtained from Climate Change Information Center of Korea. The spatial resolution of the precipitation data is 1km. As a result, there was a great precipitation difference caused by interpolation methods in data of mountainous watersheds in general. Especially the difference of monthly precipitation was 10~20% or more in the mountainous watersheds near the Military Demarcation Line dividing North and South Korea, Mt. Sobaik, Mt. Worak, Mt. Deogyu, Mt. Jiri and Taeback Mountain Range. It means that a final result of a research can be affected by adopted interpolation method when an interpolated precipitation data set is used in the research for the these study sites.
박종철,박성식,윤재룡,Park, Jong-Chul,Park, Sung- Sik,Yoon, Jae-Rhyong 한국현미경학회 1998 Applied microscopy Vol.28 No.1
Ultrastructural study of the development of the atrioventricular (AV) node was studied by electron microscopy in human fetus ranging from 30 mm to 260 mm crown rump length, and compared with human adult. By 30 mm fetus, the right AV nodal primordium was located below the attachment of the right venous valve. The left AV nodal primordium was observed below the attachment of septum primum. The cytoplasm of the nodal primordia contained few mitochondria, and myofibrils. These cells were apposed to each other with occasional desmosomes. In 40 mm fetus, the AV node cells were poorly organized myofibrils, while working myocardial cells were well organized myofibrils with sarcomere. At 70 mm fetus, intercalated discs were developed in the working myocardial cells. At 100 mm fetus, the nodal cells contained a relatively clear cytoplasm with a few groups of myofibrils and mitochondria. By $140\sim200$ mm fetuses, the nodal cells were an increasing number of myofibrils and mitochondria and these were scattered throughout the cytoplasm. At 260 mm fetus, the nodal cells were small and contained a clear cytoplasm with sparse and poorly organized myofibrils and mitochondria. All major ultrastructural features which characterize the adult AV nodal cells were found in this stage. The working myocardial cells were larger and had a more compact cytoarchitecture than nodal cells. Zonula adherens or fasciae adherens type junction were not found between nodal cells, but they frequently observed between nodal and working myocardial cells.
박종철,Park, Jong-Chul 대한설비공학회 1989 설비저널 Vol.18 No.2
액체헬륨온도(4.2K)를 얻을 수 있는 극저온 소형 냉동기 개발과 정밀측정(전류, 자장, 전압 등)에 사용되고 있는 dc SQUID(초전도 양자간섭장치) 제작에 관하여 설명하였다. 이와 아울러 극저온 연구가 첨단과학 및 산업에 어떻게 응용하고 있는가와 국내외 연구현황에 대하여 간단히 기술하였으며 앞으로의 대책에 관하여 논의한다.
호텔기업 상사의 포용적 리더십, 구성원의 권력거리, 심리적 안전감, 혁신행동 간의 구조적 관계에 관한 연구
박종철 ( Park Jong-chul ),권봉헌 ( Kwon Bong-heon ) 한국호텔리조트학회(구 한국호텔리조트카지노산학학회) 2021 호텔리조트연구 Vol.20 No.2
The purpose of this study is test to the structural relationships of inclusive leadership of the boss and power distance, psychological safety, innovation behavior in the hotel industry. To accomplish the goals, a field survey was conducted on the employees' of deluxe hotels in the Seoul area. The statistical tools to be undertaken in this research were frequency analysis, exploratory factor analysis, reliability analysis, correlation analysis, confirmatory factor analysis, and covariance analysis using the statistical package of SPSS (18.0) and AMOS (18.0). The results of this study could be summarized as follows: First, the inclusive leadership of the boss(openness, ease of access, usefulness) have a negatively affects the level of hotel employees' power distance. Second, the inclusive leadership of the boss(openness, ease of access, usefulness) have a positively affects the level of hotel employees' psychological safety. Third, the inclusive leadership of the boss(openness, ease of access, usefulness) have a positively affects the level of hotel employees' innovation behavior. Fourth, the power distance have a negatively affects the level of hotel employees' psychological safety. Fifth, the power distance have a negatively affects the level of hotel employees innovation behavior. In the last chapter, the paper concludes with discussions and the managerial implications for effective personnel policies.
호텔기업 구성원의 공유리더십, 조직신뢰, 직업소명의식, 고객지향성 간의 구조적 관계에 관한 연구
박종철(Jong-Chul Park),최현정(Hyunjung Choi) 한국조리학회 2023 한국조리학회지 Vol.29 No.4
This study aimed to test the structural relationships of shared leadership, organizational trust, occupational calling and customer orientation in the hotel industry. To accomplish the study goals, a field survey was conducted on the employees working at the deluxe hotels in Seoul area. Frequency analysis, correlation analysis, confirmatory factor analysis, and covariance analysis were performed by using the statistical packages of SPSS and AMOS. The results of this study could be summarized as follows; First, the shared leadership (plan & organization, problem solving, development mentoring, support & consideration) had a positive effect on the level of hotel employees organizational trust. Second, the shared leadership (plan & organization, problem solving, development mentoring, support & consideration) was revealed to have a positive effect on the level of hotel employees occupational calling. Third, the shared leadership (plan & organization, problem solving, development mentoring, support & consideration) positively influenced the level of hotel employees customer orientation. Fourth, organizational trust positively affected occupational calling. Fifth, occupational calling showed to have a positive effect on customer orientation among hotel employees. Theoretical and practical implications were provided for the effective personnel policies in the last chapter.
박종철 ( Jong Chul Park ),백진호 ( Jin Ho Back ) 한국스포츠정책과학원(구 한국스포츠개발원) 2010 체육과학연구 Vol.21 No.2
이 연구는 여자 프로배구 스파이크 서브 동작의 주요 국면에서 나타나는 과학적인 정보와 자료를 제공하여 효과적인 스파이크 서브 동작을 모색하고 기술의 향상과 발전에 기여하고자 실시하였다. 전체 소요시간 중 임팩트 구간과 착지 구간의 체공구간이 가장 길게 나타났고, 이후 도움닫기 구간, 도약 구간의 순서로 나타났다. 여자선수들의 경우 러닝점프의 동작으로 스파이크 서브를 수행하는 것으로 나타났다. 스파이크 서브의 파워를 높이기 위해서는 볼을 높이 던져 올리고 볼과 거리를 적절하게 유지하면서 수직 점프하여 볼이 신체중심의 전방에서 임팩트 하여야 하는 것으로 나타났다. 볼의 속도는 17.89m/s로 나타났으며, 도약구간에서 전후 속도의 제어를 통해 점프 시 수직 속도를 증가시켜 에너지의 효율적인 전환이 이루어져야 하는 것으로 나타났고, 임팩트 순간 근위 분절의 속도를 원위 분절로 전이시켜야 하는 것으로 나타났다. 동체전경각과 어깨회전각도는 점프 시 -10°정도의 후경자세를 취함으로써 어깨의 턴이 이루어져야 하며 임팩트는 3° 정도의 전경자세에서 어깨의 회전을 통해 진행방향과 수직에 가까운 자세를 유지해야 하는 것으로 나타났다. 동체전경각속도와 어깨회전각속도는 점프 동작에서 임팩트로 진행되는 동안 동체와 어깨 회전의 균형을 맞춰야 하는 것으로 나타났다. This study was to provide scientific data attained from the chief aspect of the spike serve conducted by professional female volleyball players and grope for an effective spike serve in order to contribute to the improvement and development of skills involved in it. Among the total time consumed, the airborne phase(impact phase and landing phase) was the longest, and next was the run-up phase and the leaping phase in order. It was shown that female players conducted the spike serve with a running jump. According to the result, in order to intensify the spike serve, it is needed to raise the ball height, maintain a proper distance with the ball, jump vertically to make an impact at the frontal center of the body. The speed of the ball was 17.89m/s. The result showed that it was necessary to increase the vertical speed at jumping through controlling the prior and posterior rate at the leaping zone to convert the energy efficiently. It is also needed to transfer the speed of the proximal segment at the moment of the impact to that of the distal segment. With regard to the angle of anteversion of the moving body and the angle of shoulder rotation, the player should take the posture of retroversion of about -10° at jumping to turn shoulders. For the impact, it is also necessary to maintain an posture that is almost vertical to the proceeding direction through shoulder rotation at the posture of anteversion with about 3°. It was proved that the moving body`s speed of the angle of anteversion and shoulder rotation should be balanced with the moving body and the shoulder rotation during the impact at jumping.