사양토성 Lysimeter에서 살균제 $^{14}C-Propiconazole$의 행방

김인선,서용택,Kim, In-Seon,Suh, Yong-Tack 한국응용생명화학회 1998 Applied Biological Chemistry (Appl Biol Chem) Vol.33 No.2

사양토성 lysimeter에서 살균제 $^{14}C-propiconazole$의 행방을 조사하고자 하였다. 벼 이앙 15일 후 $^{14}C-propiconazole$을 0.12 kg/10a 수준으로 lysimeter 토양표면에 처리한 후 시기별로 용탈수, 토양 및 휘발성분중 방사능을 조사하였다. 약제처리 후 16주간 lysimeter토양에서 용탈된 방사능은 처리 방사능의 4.4%였으며, 대부분의 방사능은 모화합된 형태이었다. 약제처리 16주 후 토양에 잔류하는 방사능은 처리 방사능의 76.5%였으며 97% 이상이 토양표층 깊이 20 cm 이내에 존재하였다. Lysimeter 토양에서 생성된 $^{14}CO_2$는 처리 방사능의 7.8%였다. 벼 수확 후 볏짚에 잔류하는 방사능은 처리량의 7.2%였으며 지엽, 벼이삭, 왕겨 그리고 현미에서는 각각 0.1% 이하를 나타내었다. Behaviour of a fungicide $^{14}C-propiconazole$ was investigated in a field lysimeter of sandy loam soil. At 15 days after rice-seedling transplanting, $^{14}C-propiconazole$ was treated on the soil surface at the rate of 0.12 kg/10a. The cummulative $^{14}C-radioactivity$ in the leachate from the lysimeter soil was 4.4% of the applied $^{14}C$ for 16 weeks. Most radioactivity detected in leachate was in the form of parent compound. At the end of lysimeter experiment. $^{14}C$ radioactivity in lysimeter soil was 76.5% of the applied $^{14}C$ and more than 97% of $^{14}C$ in soil remained in the top 20 cm. The percent of $^{14}CO_2$ evolved from lysimeter soil was 7.8% of the applied $^{14}C$. The radioactivity remained in the rice straw after harvest was 7.2% of the applied $^{14}C$, while less than 0.1% of the applied $^{14}C$ was detected in flag leaf, ear, chaff and hulled rice, respectively.

사양토성 Lysimeter 에서 살균제 14C-Propiconazole 의 해방

김인선,서용택 ( In Seon Kim,Yong Tack Suh ) 한국응용생명화학회 1998 Applied Biological Chemistry (Appl Biol Chem) Vol.41 No.3

Behaviour of a fungicide ^(14)C-propiconazole was investigate in a field lysimeter of sandy loam soil. At 15 days after rice-seeding transplanting, ^(14)C-propiconazole was treated on the soil surface at the rate of 0.12 ㎏/10a. The cummulative ^(14)C-propiconazole in the leachate from the lysimeter soil was 4.4% of the ^(14)C for 16 weeks. Most radioactivity detected in leachate was in the form of parent compound. At the end of lysimeter experiment. ^(14)C radioactivity in lysimeter soil was 76.5% of the applied ^(14)C and more than 97% of ^(14)C in soil remained in the top 20 ㎝. The percent of ^(14)CO₂ evolved from lysimeter soil was 7.8% of the applied ^(14)C. The radioactivity remained in the rice straw after harvest was 7.2% of the applied ^(14)C, while less than 0.1% of the applied ^(14)C was detected in flag leaf, ear, chaff and hulled rice, respectively.

선형 위상배열 안테나를 이용한 역지향성 크로스아이 구조에 관한 연구

김인선,박진태,김기백,박범준,장연수,Kim, In-seon,Park, Jintae,Kim, Ghiback,Park, Beomjun,Jang, Yeonsoo 한국군사과학기술학회 2020 한국군사과학기술학회지 Vol.23 No.1

This study proposes a novel structure for the cross-eye, one of the representative jamming techniques of monopulse sensors. The proposed jammer tranceivers are composed of multi-channels with phased array antenna. We named this structure PRCJ(Phased array Retrodicetive Cross-eye Jammer). In this structure, formulas for calculating cross-eye gain and distance error are derived. We compare the properties of PRCJ with two-element retrodiredtive cross-eye jammer(TRCJ). PRCJ can achieve higher J/S because this structure can steer the spatially combined jamming signal in the direction of the incident monopulse signal. Because of the multiple channels in the phased array, it also increases the degree of freedom of channel matching. Finally, We preform a statistical analysis of the cross-eye gain according to the amplitude and phase errors. From this results, It has been found that PRCJ can get higher cross-eye gain than TRCJ.

생쥐 체내에서 $^{14}C-{\alpha}-Endosulfan$의 대사

김인선,이강봉,심재한,서용택,Kim, In-Seon,Lee, Kang-Bong,Shim, Jae-Han,Suh, Yong-Tack 한국환경농학회 1996 한국환경농학회지 Vol.15 No.1

생쥐 체내에서 $^{14}C-{\alpha}-Endosulfan$의 흡수, 분포, 대사, 배설 등의 동태를 구명하기 위하여 약제를 7.5mg $kg^{-1}$ 수준으로 복강주사 처리하여 수행한 시험 결과를 요약하면 다음과 같다. 1. 약제처리 후 4 일 이내에 처리 방사능의 63.9%가 소변을 통해 배설되었고, 그 후부터는 배설율이 일정하였다. 2. 약제처리 후 각 조직별 방사능의 분포는 처리 30분 이내에는 심장에 가장 높게 분포하였으며, 2시간에는 간과 신장에서 그 분포율이 현저하게 증가하였으며, 시간이 경과함에 따라 그 분포율은 점점 감소하였다. 3. $^{14}C-{\alpha}-endosulfan$은 생쥐 체내에서 ${\beta}-endosulfan({\beta}-E)$, endosulfan ether(EE), endosulfan sulfate(ES), 그리고 endosulfan alcohol(EA)로 대사되었으며 주요 대사산물은 간에서 EA(13.25%) 그리고 신장에서는 EHE(19.37%)였다. 4. 소변중에 배설된 대사산물로는 EA(43.21%), ES(4.78%), ${\beta}-E$(7.21%), EE(3.72%), EHE(18.04%) 등이었다. Absorption, distribution, excretion and metabolism of $^{14}C-{\alpha}-Endosulfan$[1,4,5,6,7,7-hexachloro-8,9,10-=trinorborn-5-en 2,3-ylenebismethylene]sulfite) were studied in male mouse(Balb/c) after single intraperitoneal treatment as the dose level of 7.5 mg/kg body weights. After treatment of $^{14}C-{\alpha}-endosulfan$, the radioactivity was rapidly excreted into the urine(63.9 %) within 4 days, thereafter the excretion ratio was constant. Radioactivity levels in the tissues was reached maximum 0.5 hr in heart, 2 hrs in liver and kidney after the treatment, then decreased with time. Endosulfan was metabolized to ${\beta}-endosulfan({\beta}-E)$, endosulfan ether(EE), endosulfan sulfate(ES), and endosulfan alcohol(EA). The main metabolites were EA(13.25 %) in liver and endosulfan hydroxyether(EHE)(19.37 %) in kidney. The urinary metabolites were EA(43.21 %), ES(4.78 %), ${\beta}-E$(7.21 %), EE(3.72 %) and EHE(18.04 %).

우수한 출력 평탄도를 갖는 초광대역 주파수발생기의 구현

김인선,김장표,Kim, In-Seon,Kim, Jang-Pyo 한국군사과학기술학회 2011 한국군사과학기술학회지 Vol.14 No.6

In this paper, we present methods to improve output flatness of Ultra-wideband(f1~80f1) Frequency Generator (UFG) with variable output function. That include optimal structure and output ripple calibration algorithm to realize good flatness. The UFG was manufactured by our methods, then experiments were performed. The flatness of band 1~3 and band 4 are within ${\pm}2dB$, ${\pm}4dB$ respectively. These results are very excellent in view of ultra-wideband including millimeter wave band. From this results, we can confirm the validity of our methods.

방향탐지 정확도 개선을 위한 안테나 전면판 설계에 관한 연구

김인선,신임섭,Kim, In-Seon,Shin, Im-Seob 한국군사과학기술학회 2011 한국군사과학기술학회지 Vol.14 No.4

In this paper, we present the AFP(antenna front plate)s which were designed to reduce the reflection for the sake of the improvement of DF(direction finding) accuracy. The AFP consists of front plate, absorber and radome. The AFPs were optimized respectively by real test and we performed the DF test using our AFPs in laboratory. The DF test shows that the DF accuracy is about 2 times better than the requirement capability. Then, the DF field test was executed using the AFPs, which were installed in helicopter in consideration of the reflection by platform. The result of the DF field test is superior to the requirement capability also, which shows the validity of our design method.

ELINT 포드를 장착한 전투기의 전자기 환경 영향(E3) 시험평가에 관한 연구

김인선,박영주,최대규,김장표,이병남,Kim, In-Seon,Park, Young-Ju,Choi, Dae-Kyu,Kim, Jang-Pyo,Lee, Byeong-Nam 한국군사과학기술학회 2012 한국군사과학기술학회지 Vol.15 No.3

This paper describes the verification test on Electromagnetic Environmental Effects(E3), which conducted on ground as a final step to confirm the normal operation of ELINT pod and Safety-of-Flight of KF-16C/D mounted with ELINT pod prior to the initial flight. Based on MIL-STD-464A, indispensable 7 requirements among 14 detailed requirements total were carried out in the test. Considering the Safety-of-Flight(SOF), we invest a great deal of time and effort on Hazards of Electromagnetic Radiation to Ordnance(HERO) and Intra-system EMC test. E3 test and evaluation were performed on 62 equipments of KF-16C/D, respectively. As a result, we verify that KF-16C/D mounted with ELINT pod(hereafter "system") are electromagnetically compatible among all subsystems and equipment within the system and with environments caused by electromagnetic effects external to the system.

필터뱅크에 적합한 새로운 구조를 갖는 저대역 튜너블 BPF에 관한 연구

김인선,이영중,Kim, In-Seon,Lee, Young-Joong 한국군사과학기술학회 2013 한국군사과학기술학회지 Vol.16 No.3

In this paper, we present a tunable BPF with a novel structure. The filter is very useful to optimization of low frequency filter performance, because the fiilter has air-coils and tuning screws. This filter also has the merits of light weight and small size in comparison with conventional tunable filter at low frequency. This type filters are especially suitable for switched filter bank due to tuning structure. We designed 4 channel filter bank with two SP4Ts and 4 BPFs using novel structure. Tuning processes were subsequently executed. We obtained satisfactory performances as a result; consequently, the validity of our proposal was proved.

개선된 저지 대역을 갖는 변형된 일반화된 체비셰프 저역 통과 필터 설계

김인선,김광수,임종식,안달,Kim In-Seon,Kim Kwang-Soo,Lim Jong-Sik,Ahn Dal 한국전자파학회 2005 한국전자파학회논문지 Vol.16 No.11

본 논문에서는 필터의 손실이나 크기의 증가 없이 저지 대역을 현저히 화장시킬 수 있는 새로운 방법을 제안하였다. 제안한 저역 통과 필터는 기존에 발표된 변형된 일반화된 체비셰프(MU: Modified Generalized Chebyshev)저역 통과 필터와 외형상 소자의 구성이 유사하지만 필터의 소자값이 서로 완전히 다르다. 기존의 MGC 필터는 두 번째 감쇠극만을 고조파 제거(또는 억제)에 사용했지만, 반면에 제안한 필터는 두 번째 감쇠극뿐만 아니라 첫 번째 감쇠극의 3차 고조파를 적절히 이용함으로서 저지 대역 특성이 기존의 MGC 필터보다 우수하다. 제안한 이론에 따라 저역 통과 필터를 제작하였고, 제작된 필터의 측정으로부터 제안된 필터는 저지 대역폭이 전형적인 GC(Generalized Chevbyshev)필터에 비해 4배 이상, 기존의 MGC 필터보다 1.7배 이상의 넓은 범위에 이름을 확인할 수 있다. In this paper, we suggest the new method to considerably enlarge stopband without increment of filter sire and loss. The proposed low pass filter looks like outward configuration with the published Modified Generalized Chebyshev (MGC) low pass filter, but the element values completely differ from each other. The published MGC fille, had been considered only the second attenuation pole to reject(or suppress) the harmonic, whereas the stopband of the proposed filter is superior to the published MGC filter because not only the second attenuation pole but also the third harmonic of the first attenuation pole is made use of profitably. We fabricate a low pass filter according to the proposed theory. From the measurement of the fabricated filter, we can confirm that the stopband of the proposed filter is reached above 4 times wider than the conventional Generalized Chebyshev(GC) filter and above 1.7 times wider than the published MGC filter.

생쥐 체내에서 14C - α - Endosulfan 의 대사

김인선,이강봉,심재한,서용택 ( In Seon Kim,Kang Bong Lee,Jae Han Shim,Yong Tack Suh ) 한국환경농학회 1996 한국환경농학회지 Vol.15 No.1

Absorption, distribution, excretion and metabolism of ^(14)C-α-endosulfan([1,4,5,6,7,7-hexachloro-8,9,10-=trinorborn-5-en 2,3-ylenebismethylene]sulfite) were studied in male mouse(Balb/c) after single intraperitoneal treatment as the dose level of 7.5 ㎎/㎏ body weights. After treatment of ^(14)C-α-endosulfan, the radioactivity was rapidly excreted into the urine(63.9 %) within 4 days, thereafter the excretion ratio was constant. Radioactivity levels in the tissues was reached maximum 0.5 hr in heart, 2 hrs in liver and kidney after the treatment, then decreased with time. Endosulfan was metabolized to β-endosulfan((β-E), endosulfan ether(EE), endosulfan sulfate(ES), and endosulfan alcohol(EA). The main metabolites were EA(13.25 %) in liver and endosulfan hydroxyether(EHE)(19.37 %) in kidney. The urinary metabolites were EA(43.21 %), ES(4.78 %), β-E(7.21 %), EE(3.72 %) and EHE(18.04 %).