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후박추출물과 옥수수 불검화 추출물 혼합 경구용 제제가 비글견에서 실험적으로 유발된 치주염에 미치는 영향
김태일,정종평,구영,Kim, Tae-Il,Chung, Chong-Pyoung,Ku, Young 대한치주과학회 2002 Journal of Periodontal & Implant Science Vol.32 No.4
It has been reported that Magnoliae cortex extract has antibacterial and antimicrobial activity against pathogenic microbes and Zea Mays L. extract is effective for improving gingival tissue health. The purpose of this study was to examine the anti-inflammatory and antimicrobial effects of Zea Mays L. and Magnoliac cortex extract mixtures through experimental peridontitis induced beagle dog model. Nine beagle dogs with experimentally induced periodontitis were selected. Baseline clinical indices which includes plaque index, gingival index, probing pocket depth, clinical attachment level, gingival fluid flow rate were recorded and microbial assays were done. Magnoliac cortex and Zea Mays L., mixed at 2:l ratio in 105mg capsular dosage, were taken by 3 capsule (Group I) or 6 capsule dosages (Group II) three times a day. After 4,8,12 weeks, clinical indices were recorded. All data of clinical indices were compared through one-way ANOVA with 95% confidence level. Clinical indices of group I and II showed significantly better results than those of control group. There were no significant differences between group I and II. In conclusion, it was confirmed that mixture of Magnoliae cortex and Zea May L. (mix ratio 2:1) possessed clinical improving effects to periodontitis.
녹차추출물/L-Theanine 혼합물의 Secretase 활성 억제 및 세포사 억제를 통한 기억력 회복능
김태일,육동연,박상기,박형국,윤여경,홍진태,Kim, Tae-Il,Yuk, Dong-Yeon,Park, Sang-Ki,Park, Hyoung-Kook,Yoon, Yeo-Kyeung,Hong, Jin-Tae 대한약학회 2008 약학회지 Vol.52 No.5
We examined the effect of green tea extract (GTE) and L-theanine combination on the $A{\beta}_{1-42}$-induced memory dysfunction. GTE and combination were administrated into mice for 3 weeks followed by injection of $A{\beta}_{1-42}$ to induce memory impairment. GTE and L-theanine administration significantly improved cognitive ability and reduced $A{\beta}_{1-42}$ level accompanied with the inhibition of neuronal cell death and activities of secretase. These results suggest that GTE and L-theanine combination may be a useful for preventing for the development or progression of Alzheimer's disease.
공대공 적외선 미사일의 항력을 고려한 초음속 항공기의 피격성 분석
김태일,김태환,이환성,배지열,정대윤,조형희,Kim, Taeil,Kim, Taehwan,Lee, Hwanseong,Bae, Ji-Yeul,Jung, Dae Yoon,Cho, Hyung Hee 한국군사과학기술학회 2017 한국군사과학기술학회지 Vol.20 No.2
An infrared-guided missile has been emerging as a major threat against combat aircraft due to its passive guidance characteristics and with recent advances in stealth technology. Hence, the infrared stealth technology and its effectiveness-evaluation technique become more significant than ever before. In this study, we applied missile aerodynamics to lethal range calculation which allowed more precise prediction. CFD analyses were newly involved in estimating drag force characteristics of an infrared-guided missile. Velocity profiles during flight period of the missile were constructed utilizing these drag characteristics and then incorporated into our in-house code to predict corresponding lethal ranges. The results showed that the present method can predict lethal range more appropriately than the previous one with constant velocity profile. As one of the results, if a fighter gains altitude more which reduces less drag of the attacking missile, then the lethal envelope increases significantly more compared to the lock-on envelope.
변형된 저지특성을 갖도록 ${\lambda}g$/4 변환기를 정합 시킨 마이크로스트립 라인 포토닉 밴드갭 구조의 설계 및 응용
김태일,장미영,박익모,임한조,Kim, Tae-Il,Jang, Mi-Yeong,Park, Ik-Mo,Im, Han-Jo 대한전자공학회 2000 電子工學會論文誌-TC (Telecommunications) Vol.37 No.9
This paper presents the photonic bandgap structure that has a defect mode within a broad stopband. In order to create a broad stopband, we eliminated one of periodic stopbands of PBG structure by using a quarter-wavelength transformer and cascaded another PBG structure having a center frequency corresponding to the eliminated stopband. We have demonstrated that it is a simple and effective method that can solve an overlapping problem of periodic stopband in two cascaded PBG structures. 본 논문에서는 넓은 저지대역과, 저지대역내에 결함 모드를 포함할 수 있는 포토닉 밴드갭(PBG) 구조에 관하여 연구하였다. PBG 구조에서 λg/4 변환기를 이용하여 주기적인 저지대역 중에서 특정 저지대역을 제거할 수 있었으며, 제거된 저지대역의 중심주파수에 해당하는 주기를 가지는 일반적인 PBG 구조를 직렬로 연결함으로써 넓은 저지대역을 구현하였다. 이것은 저지대역의 겹침 문제를 효과적으로 해결한 것으로써 넓은 저지대역 안에서 결함 모드를 이용할 수 있게 되었으며, 넓은 저지대역내에서 다중 스위치의 구현을 가능하게 하였다.
친환경축산에 앞장서는 생균제 산업 - 사료용 생균제의 개발 및 이용 현황
김태일,Kim, Tae-Il 한국단미사료협회 2004 사료산업 Vol.2 No.6
현대는 인간의 복지와 환경보호의 양면을 중요하게 여기는 시대이다. 생물을 담보로 생산성을 추구하는 모든 산업이 환경에 친화적이면서 인간복지에 기여하는 산업으로 접목되기를 강요하고 있는 시대다. 이러한 현상은 범세계적인 추세다. 이러한 대전제에 부응한 산업이 되었을 때 얻게되는 수익에서 수익의 합리성을 찾을 수 있고 지속적인 성장이 기대되는 산업으로 보장받을 수 있기 때문인 것으로 생각된다. (중략)
혀 세정기가 부착된 수동칫솔이 치아와 혀의 세정도 및 구취 관리도에 미치는 영향
김태일,홍삼표,이신재,강봉선,오영상,김인경,오미현,Kim, Tae-Il,Hong, Sam-Pyo,Lee, Shin-Jae,Kang, Bong-Sun,Oh, Young-Sang,Kim, In-Kyung,Oh, Mi-Hyun 대한치주과학회 2008 Journal of Periodontal & Implant Science Vol.38 No.4
Purpose: The aim of this study was to investigate the effect of tongue cleaner-equipped manual toothbrush on tooth cleanness, tongue cleanness and malodor index. Materials and methods: 504 subjects were included in this study. At 1st visit, basic information such as age, sex, smoking amount and alcohol consumption was recorded. Self assessment by individual subjects was performed regarding satisfaction to old toothbrush and toothbrushing habit. Tooth cleanness, tongue cleanness and malodor index was assessed by professional researcher. Tongue cleaner-equipped manual toothbrush was given to each subject with proper toothbrushing instruction. After 1 month passed, self assessment and researcher assessment regarding the same index were performed and analyzed statistically by chi-square test. Results: At 1st visit subjects seem to ignore tongue cleansing and showed poor tooth cleanness index, tongue cleanness index and malodor index, however the same subjects were motivated to clean their tongue and teeth and presented statistically improved distribution pattern in tooth cleanness index, tongue cleanness index and malodor index after using tongue cleaner-equipped manual toothbrush(p<0.01). Satisfaction to tongue cleaner-equipped manual toothbrush was 98%. Conclusion: Tongue cleaner-equipped manual toothbrush would be an effective tool for maintaining good oral hygiene through improving tooth and tongue cleanness and preventing malodor formation.