• 한국식품영양과학회지
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• 제34권8호
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• pp.1124-1129
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• 2005

동해안 특산 해조류의 식품 또는 의약품재료로의 이용가능성을 검토하기 위하여 소화효소(pepsin)로 가수분해한 다음 저분자peptide를 정제하여 여러 가지 기능성을 연구하였다. 쇠 미역, 파래 및 지누아리의 효소가수분해물은 Bio-Rad P2 gel chromatography 상에서 3개의 peptide peak를 나타내었으나 김은 2개의 peak를 나타내었다. 항산화활성은 김 peak 1이 가장 높았으며 그 다음으로 김 peak 2 및 쇠미역 peak 2 순으로 높았다. ACE 저해활성은 김 peak 1, 파래 peak 3 및 peak 2순으로 높았으며, 항갈변활성은 김 peak 1 및 2, 파래 peak 2가 가장 높았으며 그 다음으로 파래 peak 3이 높았다. 항암(종양)활성은 파래 Peak 1이 가장 높았으며 그 다음으로 쇠미역 peak 2, 파래 peak 3, 지누아리 peak 3 순으로 높았다. 전반적으로는 김의 기능성이 가장 뛰어났으며, 이는 가장 높은 단백질함량을 가지고 있는 것도 한 이유라고 판단되며, 앞으로 저분자 peptide의 구조분석 및 아미노산 sequence의 규명도 필요하다고 본다.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2013년도 춘계학술대회
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• pp.1020-1022
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• 2013

본 논문에서는 펄스방사선 선량 측정을 위한 Peak Detector를 설계하였다. 펄스방사선은 수ns ~ 수십ns의 초고속의 신호로 Peak 값을 측정하기 어렵다. Peak Detector는 센서에서 발생한 Peak 전압을 수ms 동안 유지하므로 ADC를 이용하여 데이터를 쉽게 측정할 수 있다. Peak Detector 시뮬레이션 결과 Peak 값을 1ms 이상 유지하는 것을 확인하였으며 펄스방사선 조사시험 결과 $1.95{\times}10^6rad/s$의 선량을 확인하였다.

• 한국운동역학회지
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• 제30권2호
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• pp.145-154
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• 2020

Objective: The purpose of this study was to determine the relationship between impact and shear peak force, and tibia-accelerometer variables during running. Method: Twenty-five male heel strike runners (mean age: 23.5±3.6 yrs, mean height: 176.3±3.3 m/s, mean mass: 71.8±9.7 kg) were recruited in this study. The peak impact and anteroposterior shear forces during treadmill running (Bertec, USA) were collected, and impact shock variables were computed by using a triaxial accelerometer (Noraxon, USA). One-way ANOVA was used to test the influence of the running speed on the parameters. Pearson's partial correlation was used to investigate the relationship between the peak impact and shear force, and accelerometer variables. Results: The running speed affected the peak impact and posterior shear force, time, slope, and peak vertical and resultant tibial acceleration, slope at heel contact. Significant correlations were noticed between the peak impact force and peak vertical and resultant tibia acceleration, and between peak impact average slope and peak vertical and resultant tibia acceleration average slope, and between posterior peak (FyP) and peak vertical tibia acceleration, and between posterior peak instantaneous slop and peak vertical tibial acceleration during running at 3 m/s. However, it was observed that correlations between peak impact average slope and peak vertical tibia acceleration average slope, between posterior peak time and peak vertical and resultant tibia acceleration time, between posterior peak instantaneous slope and peak vertical tibial acceleration instantaneous slope during running at 4 m/s. Conclusion: Careful analysis is required when investigating the linear relationship between the impact and shear force, and tibia accelerometer components during relatively fast running speed.

• 한국조명전기설비학회:학술대회논문집
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• 한국조명전기설비학회 2001년도 학술대회논문집
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• pp.163-166
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• 2001

In this paper, the superposition of ultrasonic signals which were generated by multi-source in a transformer was presented. For analysis of ultrasonic superposition, V$_{peak-peak}$ and pulse number of ultra-sonic signal were used. As a result, the wave form of ultrasonic superposition was classified into three types ; First type was the wave form whose V$_{peak-peak}$ was increased by the superposition of each signal's V$_{peak-peak}$. Second type was wave form whose V$_{peak-peak}$ was decreased by the superposition of each signal's V$_{peak-peak}$. And the other type was wave form whose peals were two or mere. And V$_{peak-peak}$ of superposed ultrasonic wave wads mostlv increased or decreased and pulse number of supe게osed u1trasonic wave was mostly increased.y increased.

• Journal of the Korean Wood Science and Technology
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• 제15권4호
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• pp.26-31
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• 1987

맹종죽, 왕대, 솜대 Dioxane Lignin의 UV, IR spectrum의 특징(特徵)을 조사(調査)하여 본 바, 그 결과(給果)를 요약하면 다음과 같다. 1. UV spectrum에 있어서는 일반적(一般的)인 Lignin spectrum과 같이 Maximum peak, Shallow minium peak, Minimum peak의 3개소(個所)를 보였는데 Max. peak는 210nm 부근(附近), Shallow peak는 260-270nm에, Minimum peak는 280nm부근(附近)에 있었다. 2. 280nm부근(附近)의 Minimum peak는 Lignin이 갖는 특징적(特徵的)인 peak로서 일반(一般) 침엽수재(針棄樹材) Lignin이나 활엽수(闊葉樹) Lignin과는 달리 282-285nm에서 흡광도(吸光度)가 꼭 같아 아주 완만한 peak 를 보여 주었다. 3. IR spectrum에 있어서는 방향핵(芳香核) 흡수대(吸收帶)는 $1550cm^{-1}$ 부근(附近)에 있고 1040-$1130cm^{-1}$부근(附近)과 1230-$1275cm^{-1}$에서의 Spectrum 형태(形態)는 활엽수(闊葉樹)에 가깝고 침엽수재(針葉樹材) Lignin의 spectrum과는 상반되는 모습을 보여 주었다.

• 한국콘텐츠학회논문지
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• 제12권12호
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• pp.363-371
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• 2012

본 연구는 당뇨환자와 일반인을 대상으로 $VO_2peak$가 복부둘레, 혈중지질 및 혈압에 어떠한 영향을 미치는지 알아본 결과 당뇨환자인 경우 $VO_2peak$와 복부둘레에서 부적상관을 나타냈으며 유의한 차이가 나타났다. 고밀도 지단백 콜레스테롤은 정적상관을 보였으며 유의한 차이가 나타났다. 일반인의 $VO_2peak$와 이완기혈압에서는 정적상관을 보였으며 유의한 차이가 나타났다. 당뇨환자의 복부둘레에서 $VO_2peak$에 통계적으로 유의한 영향을 미치는 것으로 나타났으며, 일반인의 이완기 혈압에서 $VO_2peak$에 통계적으로 유의한 영향을 미치는 것으로 나타났다. 또한 집단 간 복부둘레, $VO_2peak$, 고밀도 지단백 콜레스테롤, 중성지방, 혈압에서 집단 간 유의한 차이가 나타났다. 따라서 유산소능력($VO_2peak$) 지표들을 모니터링 함으로써 당뇨 환자들은 심혈관 질환의 위험요인을 관리할 수 있을 것으로 보인다. 또한 유산소능력을 향상시키는 운동을 실시하는 것 역시 심혈관 질환의 위험도를 낮추기 위한 좋은 방안이라고 사료된다.

• Nuclear Engineering and Technology
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• 제54권2호
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• pp.462-468
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• 2022

The selection and effective utilization of peak-fitting software for conventional gamma-ray spectrum analysis is significant for accurate determination of the mass fraction of elements, particularly in complex peak regions. Majority of the peak-fitting programs can derive similar peak characteristics for singlet peaks, but very few programs can deconvolute multi-peaks in a complex region. The deconvolution of multi-peaks requires special peak-fitting functions, such as left and right-skew distributions. In the this study, 843.76 keV (²⁷Mg) peak area from the complex region (840 keV-850 keV) determined and compared using four different peak-fitting programs, namely, GammaVision, Genie2000, HyperLab, and HyperGam. The 843.76 keV peak interfered with 841.63 keV (^152mEu) and 846.81 keV (⁵⁶Mn). The total Mg concentration was determined through k₀-instrumental neutron activation analysis by applying the isotopic interference correction factor ²⁷Al(n,p)²⁷Mg through the simultaneous determination of Al concentration. HyperLab and HyperGam peak-fitting programs reported consistent peak areas, and resultant concentrations agreed with the certified values of matrix-certified reference materials.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2004년도 추계학술대회 논문집 전력기술부문
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• pp.113-115
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• 2004

This year korea power system had recorded highest peak load for 6 times and finally it made new peak load 51,264MW at July 29th 3:00 PM. The new peak load is increased 8.2% from the last year peak load 47,385MW and korea power system entered 50,000MW load era. The Korea Power Exchange (KPX) snapped power system data at the peak load time using state estimation function in the EMS. And authors converted the power system data at peak load to PSS/E power flow format. Using this PSS/E peak load power flow data, this paper explains demand analysis result shun capacitor operation, voltage distribution at the peak load. And the paper shows the simulation result of 2 contingency analysis using the snapped PSS/E peak load data.

• 대한음성학회:학술대회논문집
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• 대한음성학회 2000년도 7월 학술대회지
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• pp.211-219
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• 2000

In this paper, we examine fO peak lagging phenomenon in English. FO peak lagging refers to the fact that fO peak corresponding to an accent is realized beyond the domain of the host syllable. We present experimental data of fO peak lagging, which shows that fO peak is heavily delayed when the duration of the accented syllable is relatively short. In addition, we show that fO peak is also heavily delayed and realized in the following syllable in a focused word, even where the target vowel is not intrinsically short.

• Journal of Advanced Marine Engineering and Technology
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• 제23권2호
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• pp.210-215
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• 1999

The proposed detector is consists of three-phase sinusoidal signal generator and peak detector. This peak detector can detect the peak voltage value at the state of variable frequency. In experi-ment three-phase sinusoidal signals are generated from D/A converter using IBM PC and deliv-ered to the peak detector. Each signals are squared by multiplier and summed up Peak value is the square root of summed value extracted by square root circuit.