• 제목/요약/키워드: FM

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국내 FM 간섭환경에서 대역폭에 따른 IBAC DAB 시스템의 성능분석 (Performance Analysis of IBAC DAB System for Bandwidth in Korea FM Interference Environmentlevance Feedback)

  • 조병록;김태훈;오길남
    • 방송공학회논문지
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    • 제5권2호
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    • pp.211-219
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    • 2000
  • IBAC DAB 시스템은 기존의 FM 방송 대역내의 가드밴드를 사용하게 됨에 따라 기존의 FM 방송신호로 인해 간섭을 받게 된다. IBAC(In Band Adjacent Channel) DAB 시스템의 성능평가에 있어서 FM 간섭신호는 중요한 요소가 된다. 국내 FM 공중파 방송신호를 실제 측정하여 수시로 변하는 FM 스펙트럼의 특성과, FM 채널 특성에 따라 FM 신호의 평균적인 스펙트럼의 특성을 구하였다. 본 논문에서는 제안한 IBAC DAB 시스템을 기반으로 한 이런 다양한 FM 간섭신호를 C로 모델링하여 IBAC DAB 시스템의 성능과 점유 대역폭에 따른 FM 간섭의 영향을 분석하고, 본 시스템의 성능이 유지될 수 있는 FM 간섭비를 제시한다. 실험결과 FM PSD의 평균 특성에 따라 IBAC DAB 시스템의 성능변화가 크며, 시스템의 성능이 유지 될 수 있는 FM 간섭 혼신비가 10dB임을 알 수 있었다.

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우모분과 pyridoxine에 의한 taurine 강화 계육 생산

  • 이승민;임희석;이복희;김우연;백인기
    • 한국가금학회:학술대회논문집
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    • 한국가금학회 2004년도 제21차 정기총회 및 학술발표회
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    • pp.95-96
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    • 2004
  • An experiment was conducted to investigate the effects of dietary supplementation of feather meal (FM its) digests on the performance of broiler chicks and taurine content in broiler meat. A total of 1,000 broiler chickens were assigned to five dietary treatments : Control, FM diet(FM), FM+pyridoxine(FM+Pyridox), H$_2$O$_2$ treated FM diet(H$_2$O$_2$-FM) and enzyme treated FM diet (Enzyme-FM). Treated diets were supplemented with FM or FM digests at the level of 5 % to the control diet. During the stater period, weight gain of chicks fed FM+Pyridox was significantly higher(P<0.05) than those of the other FM or FM digest treatments but was not different from the control. Weight gam of overall period were not significantly different among treatments. Feed intake of the control was greater than that of FM or FM digest treatments. Feed conversion ratio(feed intake/gain) of chicks fed FM and H$_2$O$_2$-FM were significantly higher than those of Enzyme-FM and FM+Pyridox, but were not significantly different from the control. Taurine contents of leg and breast mucle were significantly (P<0.01) different among treatments but those of liver were not significantly different. Taurine content of FM+Pyridox was highest in both leg and breast muscle. It was 85 % higher in leg muscle and 15 % higher in breast muscle than that of the control. Sensory evaluation data showed significant but not consistant responses in various parameters. FM + Pyridox treatment showed highest score in aroma of raw leg muscle of male and in juiciness and tenderness of broiled breast muscle of male chickens. Control group showed highest color score in raw leg muscle of female and lowest overall acceptability score in broiled breast and leg muscle of male chicken. It is concluded that taurine can be enriched especially in broiler leg meat by 5 % FM diet supplemented with pyridoxine.

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우모분에 의한 taurine 강화 계란 생산

  • 이승민;임희석;이복희;백인기
    • 한국가금학회:학술대회논문집
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    • 한국가금학회 2004년도 제21차 정기총회 및 학술발표회
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    • pp.93-94
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    • 2004
  • The experiments was conducted to investigate the effects of dietary supplementation of feather meal and pyridoxine on the taurine content of egg yolk and performance of laying hens. Feeding trial was conducted with 900 31-wk-old Hy-Line Brown layers for 4wks. The experiment consisted of six dietary treatments: control(basal diet), feather meal(FM) 3 % diet(FM 3 %), FM 3 % + pyridoxine supplemented diet(FM 3 % + Pyridox), FM 6 % diet, FM 6 % + pyridoxine supplemented diet(FM 6% + Pyridox), Synthetic taurine 0.25 % supplemented diet(Taurine). Egg production of birds fed FM 3% was highest and those of the FM diets were also higher than those of Taurine and the control. Egg weight of Taurine was significantly lower than those of FM 3 %, FM 6 % and the control but were not significantly different from those of FM 3 % + Pyridox or FM 6 % + Pyridox. Feed intake of the control was greater than those of FM 6 %, FM 6% + Pyridox or Taurine treatment but was not significantly different from those of FM 3 % and FM 3 % + Pyridox. Feed conversion of the control was significantly higher than other treatments in which that of FM 6 % was lowest. Broken and soft egg production of Taurine was highest while that of the control was lowest among treatments. Taurine content of egg yolk significantly increased by supplementation of taurine(64.7 %). FM 6 % + pyridoxine(57 %), FM 3% + pyridoxine (32.1%) and FM 6% (16.6 %). Sensory evaluation data of Taurine has shown the highest score in most of sensory attributes. It is concluded that taurine can be enriched in egg yolk by supplementation of 6 % FM diet and pyridoxine as well as 0.25 % synthetic taurine.

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우모 digest가 육계의 증체 및 계육 內 taurine 함량에 미치는 영향

  • 홍성진;남궁환;백인기
    • 한국가금학회:학술대회논문집
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    • 한국가금학회 2001년도 제18차 정기총회 및 학술발표 PROCEEDINGS
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    • pp.102-103
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    • 2001
  • Two experiments were conducted to investigate the effects of feather digests on the growth of broiler chicks and taurine content in the broiler meat. In Experiment 1, a total of 40 broiler chickens(Ross) were assigned to 4 dietary treatments: control(T1), regular feather meal(FM) diet(R-FM, T2), NaOH treated FM diet(NaOH-FM,T3), HNO3 treated FM diet(HNO3-FM,T4). In Experiment 2, a total of 70 broiler chickens were assigned to 7 dietary treatments: T1~T4(same as those of Exp. 1), modified HNO3 treated FM diet(M-HNO3-FM,T5), hair meal diet(HM,T6) and 0.22% cystine supplemented diet(CYS,T7). Feather meals and hair meal were supplemented at the 5% in the diet. In Experiment 1 and 2, weight gain of chicks fed R-FM and NaOH-FM tended to be higher than those of the control and HNO3-FM. In Experiment 2, weight gain of chicks fed CYS was highest followed by NaOH-FM, HM, M-HNO3-FM, HNO3-FM, control and R-FM. In Experiment 1, taurine content in breast muscle of chicks fed NaOH-FM was significantly higher(P<0.05) than that of control. In Experiment 2, taurine content in breast muscle of chicks fed NaOH-FM and CYS tended to be higher than that of other groups. Taurine content in leg muscle was significantly different among treatments as NaOH-FM and R-FM being highest followed by M-HNO3-FM, CYS, control, HNO3-FM and BM. Taurine content in the liver(Exp. 1 and 2) and heart(Exp. 2) were not significantly affected by treatments. These results indicated that 5% NaOH-FM in the diet was effective in increasing taurine content in breast and leg muscle of broiler chicks.

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FM을 이용한 DS/SS(FM-DS/SS) 시스템의 구현 (Implementation of DS/SS(FM-DS/SS) system using FM)

  • 정명덕;박지언;변건식
    • 한국전자파학회논문지
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    • 제9권1호
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    • pp.98-107
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    • 1998
  • FM-DS /SS 시스댐 구현을 위하여, 주입되는 신호에 동기하는 주입형 SO (Synchronous Oscillator)에 대하 여 해석하였다. 송신부에서는 FM의 RF 출력 신호와 DS /SS(Direct Sequence /Spread Spectrum)을 이용하 여 FM-DS /SS 변조 방식을 채택하였으며, 수신부에서는,SO를 수신부의 PN(Pusudo Noise) 클럭 동기를 위한 슬라이딩 상관기로 사용하여 FM-DS/SS의 복조를 위한 동기부로 이용하였다. 그 결과 수신주파수가 도플러와 같은 현상에서도 안정된 동기성능을 유지하였으며, FM-DS /SS의 시스템에 적용하여 PN 동기 및 동기 특성 을 입증하였다.

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Kefir 유래의 미생물을 이용하여 제조한 발효유의 특성에 관한 연구

  • 김현철;김태진;신희철;송진욱;이종익;유제현
    • 한국축산식품학회:학술대회논문집
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    • 한국축산식품학회 2004년도 정기총회 및 제33차 춘계 학술대회
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    • pp.322-325
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    • 2004
  • Kefir에서 유산균인 Lactobacillus acidophilus와 Lactococcus lactis 그리고 효모인 Candida kefir를 분리하였고, 이를 이용하여 FM(Fermented milk) A, B, C 제조${\cdot}$분석하였다. 유산균 수는 FM B가 $8.6{\times}\;10^9\;cfu/ml$로 가장 많았고, 효모수는 FM C가 $1.3{\times}\;10^7cfu/ml$로 가장 많았다. 알콜 함량은 FM C가 3.2%, FM A가 0.98%, FM B가 0.15% 였다. 아미노산은 FM A에서는 Glu, Pro, Leu, Lys, Asp 등이, FM B에서는 Glu, Leu, Pro, Lys 등이, FM C에서는 Glu, Leu, Pro, Lys 등이 주요 아미노산으로 나타났다. 지방산은 FM A, FM B, FM C 모두 palmitic acid(Cl6:0)와 oleic acid(Cl8:1)가 각각 33.5${\sim}$37.7%와 22.1${\sim}$22.4%의 수준으로 주요 지방산을 차지하였다. 관능검사 결과FM C가 가장 높은 점수를 받았으며, 다음은 FM A, FM B 순이었다.

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로보트와 FMS에 있어서 로보트의 역할

  • 이종원;박면웅
    • 전기의세계
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    • 제32권4호
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    • pp.216-223
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    • 1983
  • 본고의 내용은 다음과 같다. 1. FMS의 개념 및 일반적system 2. FMS의 대상 3. FMS의 도입과 sensor 4. FMS에서의 work flow 5. FMS의 추세

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Taurine Enrichment of Eggs with Feather Meal and Pyridoxine

  • Lee, S.M.;Lim, H.S.;Namgung, N.;Lee, B.H.;Paik, I.K.
    • Asian-Australasian Journal of Animal Sciences
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    • 제23권5호
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    • pp.622-629
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    • 2010
  • The effects of dietary supplementation of feather meal (FM) and pyridoxine ($B_6$) on the taurine content of egg yolk and performance of laying hens were investigated. A feeding trial was conducted in nine hundred 31-wk-old $Hy-Line^{\circledR}$ Brown layers over 4 wk. The hens received 6 dietary treatments: Control, FM 3% supplemented diet (FM 3%), FM 3%+$B_6$ supplemented diet (FM 3%+$B_6$), FM 6% supplemented diet (FM 6%), FM 6%+$B_6$ supplemented diet (FM 6%+$B_6$), and synthetic taurine 0.25% supplemented diet (Taurine). Parameters of production were significantly (p<0.05) affected by treatments. The egg production of hens fed FM 3% was the highest and hens fed FM diets were more productive than the Taurine and Control groups. The egg weights of the Taurine group were significantly lower than those of the FM 3% and FM 6% groups, but not significantly different from those of other treatments. The feed intake of the Control group was highest among all groups. The feed conversion ratio of the Control group was higher than in groups receiving other treatments of which FM 6% was the lowest. The broken egg production of the Taurine group was highest, while that of the Control group was lowest among treatments. The taurine content of egg yolk was significantly (p<0.01) increased by supplementation of taurine (64.7%), FM 6%+$B_6$ (57%), FM 3%+$B_6$ (32.1%), and FM 6% (16.6%) over a 4 wk average. Sensory evaluation data of the Taurine group showed the highest score in all of the sensory attributes and those of other treatments were not significantly (p<0.05) different. In conclusion, taurine can be enriched in egg yolk by supplementation of 6% FM and $B_6$, as well as 0.25% synthetic taurine.