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화학적심제 dikegulac의 처리시기와 농도가 Rhododendron simsii ‘California Sunset’ 삽목묘의 분지 및 생육에 미치는 영향
정보영,이성춘,이승연,구진희,이정식 한국화훼산업육성협회 2009 화훼연구 Vol.17 No.2
본 연구는 화학적심제 dikegulac의 처리시기와 농도 가 Rhododendron simsii ‘California Sunset’의 분지 및 생육에 미치는 영향을 알아보고자 수행하였다. 6월에 dikegulac의 처리는 8월에 처리한것 보다 식물의 정아 발달을 지연시켰으나, 잎의 크기와 엽록소의 함량 및 분지수를 증가 시켰다. 특히, 1,500 mg·L-1의 처리가 가장 우수하였다. This study was conducted to investigate the effect of treatment time and concentration of a chemical pinching agent, dikegulac, on branches and growth of Rhododendron simsii ‘California Sunset’. R. simsii ‘California Sunset’ developed lateral branches naturally but the number of them was few. Treatment of dikegulac delayed the terminal bud development, increased in size, the chlorophyll contents of the leaf, and the number of lateral branches in June. Especially, the number of lateral branches were better at 1,500 mg·L-1 dikegulac than the others. But growth in August of R. simsii ‘California Sunset’ was naturally lower than June, there was no effect of lateral branches by dikegulac.
전투기 탑재 레이다를 위한 예측시선좌표계 기반 표적 추적필터 설계
정보영,함다혜,서의석,나원상,윤보람,김동환 대한전기학회 2020 전기학회논문지 Vol.69 No.6
This paper deals with the problem of tracking a target using an airborne AESA radar. Unlike the ground-based tracking systems, the angular motion of a platform makes the noise statistics of the converted measurements (CMs) complicated, hence the conventional approaches produce the biased target state estimates. To settle this problem, the predicted line-of-sight Cartesian coordinate system (PLCCS) is introduced. Provided that the a priori state estimation error is small enough, the statistical properties of the CMs in PLCCS can be accurately approximated only using the 1st and 2nd moments of the radar measurement noises. In addition, the resulting debiasing term leads to the satisfactory performance of the proposed filter. Enjoying the diagonal form of the noise covariance matrix, we can decouple the tracking filter into each axis for real-time implementation. Through simulations, the enhanced performance of the suggested method over the previous schemes is demonstrated.
고Mn강과 저탄소강의 CO<sub>2</sub> 레이저 이종용접 특성
정보영,한태교,Jeong, Bo-Young,Han, Tae-Kyo 대한용접접합학회 2010 대한용접·접합학회지 Vol.28 No.3
High Mn steel has been developed for automotive applications since the steel has an excellent combination of strength and ductility. However, from the viewpoint of welding, high Mn steel has a few problems related to its chemical composition. This paper describes characteristics of dissimilar $CO_2$ laser welding for expanding application of high Mn steel. From this work it was cleared that dissimilar laser welded joint between high Mn steel and carbon steel had poor formability due to the formation of martensite within weld metal. In order to improve ductility of welded joint, the method of controlling the dilution ratio of high Mn steel was suggested.
Dose-Dependent Effects of Evening Primrose Oil in Children and Adolescents with Atopic Dermatitis
정보영,박천욱,김혜원,이철헌,김진혜,안인수,조수익 대한피부과학회 2013 Annals of Dermatology Vol.25 No.3
Background: Previous clinical trials with evening primrose oil in atopic dermatitis (AD) treatment have shown different results. In addition, the optimal dose and duration of treatment with evening primrose oil have not yet been determined. Objective: The aim of this study is to investigate the dose-response treatment effects of evening primrose oil on clinical symptoms of AD and serum concentrations of polyunsaturated fatty acids. Methods: Forty AD patients were enrolled for the study and randomly divided into 2groups: those who received evening primrose oil 160 mg daily for 8 weeks and those who received 320 mg of evening primrose oil twice daily for 8 weeks. We evaluated the Eczema Area Severity Index (EASI) scores of all AD patients at weeks 0, 2, 4 and 8. In addition, we measured the levels of serum fatty acids, including C16 : 0 (palmitic), C18 : 2n (linoleic), C18 : 3n (linolenic) and C20 : 4 (arachidonic acid)using gas chromatography. Results: The serum fatty acid levels C18 : 3n and C20 : 4 were higher in the 320 mg group than in the 160 mg group, with statistical significance. After evening primrose oil treatment, EASI scores were reduced in the 2 groups. The improvement in EASI scores was greater in the 320 mg group than in the 160 mg group. There were no side effects seen in either group during the study in the 2groups. Conclusion: The results of this study suggest that the 320 mg and 160 mg groups may be equally effective in treating AD patients and show dose-dependent effects on serum fatty acid levels and EASI scores.
정보영,김대봉,곽범석 한국유방암학회 2014 Journal of breast cancer Vol.17 No.2
Spontaneous bloody nipple discharge from a single duct is asignificant clinical problem. When performing preoperative markingof the discharging duct, it is sometimes difficult to identify theduct owing to intermittent discharge. Precise preoperative markingof the discharging duct and intraductal lesions is very importantto avoid unnecessary wide excision of breast tissue or failureto remove the cause of nipple discharge. We herein presenta case of preoperative ultrasound-guided indigo carmine stainingin a patient with no discharge on the day of surgery. When adilated duct is visualized on ultrasound, the targeted duct can belocalized using indigo carmine staining, and it is possible to performa precise minimalvolume microdochectomy