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        검색결과 15

        1.
        2019.06 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Since guided missiles with the characteristics of the one-shot system remain stored throughout their entire life cycle, it is important to maintain their storage reliability until the launch. As part of maintaining storage reliability, period of preventive test is set up to perform preventive periodic test, in this case failure detection rate has a great effect on setting up period of preventive test to maintain storage reliability. The proposed method utilizes failure rate predicted by the software on the basis of MIL-HDBK-217F and failure mode analyzed through FMEA (Failure Mode and Effect Analysis) using data generated from the actual field. The failure detection rate of using the proposed method is applied to set periodic test of the actual guided missile. The proposed method in this paper has advantages in accuracy and objectivity because it utilizes a large amount of data generated in the actual field.
        4,000원
        2.
        2018.10 KCI 등재 구독 인증기관 무료, 개인회원 유료
        본 연구에서는 국내 육성 보리를 이용한 엿기름의 최적 품종 선정 및 품질 유지 기술 개발을 위한 기초기반연구로 시판 엿기름을 수집하여 제품에 사용된 원료 조성을 분석하고, 효소활성 및 품질 특성을 비교분석하였다. 본 연구에서 사용한 21개의 엿기름 제품 중 12개는 100% 보리로 만든 엿기름이었다. 특히 모든 엿기름의 원료에 대한 품종정보를 제시한 제품은 전무하였다. 엿기름 21종의 일반성분 분석 결과, 수분 4.91~11.99%, 지방 1.71~2.48%, 단백질 7.80~11.97%, 탄수화물 73.64~82.24%, 총 전분 5.50~8.22%, 환원당 3.64~14.44%로 제품 간의 성분 차이가 다르게 나타났다. 엿기름의 효소활성을 측정한 결과, 당화력은 36.80~94.30°, α-amylase 및 β- amylase 활성은 각각 18.17~186.50 및 6.53~25.05 unit/g의 범위를 보여 제품별로 활성의 차이가 큰 것을 확인할 수 있었다. 본 연구에서 도출된 시판 엿기름의 품질 분석 결과를 토대로 엿기름 제조에 적합한 최적 품종 선정 및 품질 유지 기술개발을 위한 기초자료로 유용할 것으로 판단된다.
        4,000원
        3.
        2018.03 KCI 등재 구독 인증기관 무료, 개인회원 유료
        1. 주요 쌀 생산국 브랜드 쌀 및 MMA 쌀 40점의 품질을 조사한 결과, 수분함량은 11.6(인도)~14.2%(중국), 단백질 함량은 5.82(미국)~7.86%(중국), 아밀로스 함량은 16.2(태국)~24.4%(인도), 윤기치는 45.2(인도)~75.7(미국)의 범위를 나타내었다. 2. 국가별 수집된 브랜드 쌀의 형태적 특성을 살펴본 결과, 중국과 베트남의 브랜드 쌀은 주로 통통한 단립종이었고, 미국 브랜드 쌀은 중간 두께의 중립종이었으며, 태국 브랜드 쌀은 얇은 장립종의 형태를 나타내었다. 호주와 인도는 단립, 중립, 장립의 다양한 형태의 쌀을 확인 할 수 있었다. 3. 국가별 브랜드 쌀의 백미 품위를 살펴본 결과 완전미율은 72.4(인도)~95.2(태국)%의 범위였으며, 베트남 브랜드 쌀은 동할미 비율이 높았으며, 인도 브랜드 쌀은 분상질미 비율이 높은 특징을 나타내었다. 4. RVA를 이용한 호화특성을 분석 한 결과, 인도의 브랜드 쌀이 최고온도가 낮고 치반점도가 높으며 강하점도가 낮아 취반미의 찰기가 낮을 것으로 예측되었으며, 호화개시온도 또한 유의하게 높은 것을 확인할 수 있었다. 5. 국가별 브랜드 쌀의 식미 관능평가를 실시한 결과, 수집된 브랜드 쌀의 평균 종합기호도는 미국(-0.59), 중국(-0.76), 호주(-1.23), 베트남(-1.43), 태국(-2.09), 인도(-2.49) 순으로 나타났다.
        4,000원
        4.
        2014.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        연잎 및 연근분말을 우리밀가루 중량 100%를 기준하여 0.5, 1, 2 및 3%씩 첨가하여 제조한 우리밀식빵에 대한 반죽의 발효시간, 굽기 손실률, 식빵의 부피, 색도, 물성 및 관능검사 등 품질특성에 관하여 조사하였다. 연잎 및 연근분말을 첨가하여 제조한 반죽을 발효시간에 따른 부피 변화를 측정한 결과 발효시간이 경과함에 따라 반죽의 부피가 증가하는 경향을 나타내었으며 굽기 손실률 및 식빵의 부피는 연잎 및 연근분말의 첨가량이 증가함에 따라 감소하였다. 식빵의 crust와 crumb의 색도는 연잎 및 연근 분말의 첨가량이 증가함에 따라 밝기를 나타내는 L값은 감소하였으며, 적색도를 나타내는 a값은 crust, crumb 모두 유의적으로 증가하는 경향을 나타내었고, 황색도를 나타내는 b값의 경우 crust는 감소한 반면, crumb는 증가하는 것으로 나타났다. 연잎 및 연근분말을 첨가한 식빵의 조직감은 대조군과 비교하여 첨가량이 증가할수록 경도, 부착성, 검성 및 씹힘성은 증가되었으며, 관능검사를 실시한 결과 전체적인 기호도에서는 연잎분말 1%, 연근분말 2% 첨가한 시료에서 좋은 결과를 나타내었다.
        4,000원
        5.
        2013.10 KCI 등재 구독 인증기관 무료, 개인회원 유료
        국내 토종 자원으로 알려진 앉은뱅이 밀의 밀가루 특성 밀 과자 적성을 평가하기 위해서 경남 진주시에서 구입한 앉은뱅이 밀의 통밀가루 및 백밀가루와 중형제분기로 제분한 밀가루를 평가하였다. 앉은뱅이 밀 구입처에서 제분된 제분된 통밀가루와 백밀가루는 중형제분기에서 제분된 밀가루에 비하여 밀기울 혼입으로 인하여, 회분과 단백질 함량이 높고 밀가루 색깔이 어두웠고 침전가와 건부율 및 아밀로스 함량은 낮았다. 반죽 시간이나 안정도는 밀가루간에는 차이가 없었지만, 반죽 가수량은 밀기울을 포함한 통밀가루가 높았고, 쿠키 직경이 적게 나타났다. 중형제분기로 제분된 앉은뱅이 밀가루의 밀가루 입도와 손상 전분 함량이 각각 54.44μm와 2.46%로 연질밀 특성을 나타내었으며, 총아라비노자일란 함량과 수용성 아라비노자일란 함량이 각각 28.52%와 9.49% 로 국내 밀 품종보다 높았다. 쿠키 직경은 86.88mm로 수입산 박력분과 유사하였으며, 쿠키 표면의 균열도 쿠키 적성에 적합한 것으로 나타났다.
        4,000원
        6.
        2012.10 KCI 등재 구독 인증기관 무료, 개인회원 유료
        분말을 우리밀 밀가루 중량 100%를 기준하여 각각 0.5, 1.0 및 2.0% 첨가하여 제조한 국수의 품질특성을 조사하였다. DPPH radical 소거활성, 환원력, 자동산화 억제활성, tyrosinase 저해활성을 측정한 결과, 분획물의 농도가 증가함에 따라 항산화활성은 증가하는 경향을 보였으며, 부탄올 분획물에서 높은 DPPH radical 소거활성, 환원력, 자동산화 억제활성, tyrosinase 저해활성을 보였다. 솔잎분말을 첨가하여 제조한 국수의 중량, 부피, 함수율 및 국물의 탁도는 대조구와 비교하여 분말의 첨가량이 많을수록 증가하였다. 색도는 솔잎분말의 첨가량이 증가함에 따라 L값과 a값은 감소하였으며 b값은 증가하였다. 솔잎분말을 첨가하여 조리한 국수의 조직감은 우리밀 밀가루만 사용하여 제조한 대조구에 비하여 경도, 응집성, 탄력성, 검성 및 씹힘성이 감소하는 경향을 보였다. 관능검사 결과 솔잎 분말 1.0% 첨가구에서 색, 맛 및 전체적인 기호도가 높게 나타났으며, 향과 조직감에서는 대조구와 비교하여 유의적인 차이를 나타내지 않았다.
        4,000원
        7.
        2014.07 서비스 종료(열람 제한)
        Fusarium head blight (FHB) is a major disease problem on wheat and barley around the world. F. graminearum produces trichothecenes mycotoxins such as nivalenol (NIV), deoxynivalenol (DON), and zearalenone (ZEA). The objectives of this study were to survey the natural occurrence of FHB and mycotoxins of 32 Korean wheat cultivars grown in 2011-2012 seasons at the National institute of crop science, Iksan, Korea. There was great deal of rainfall and high humidity during flowering time in May 2011. FHB incidence was counted by Fusarium infected spikes per square meter. The samples of 32 wheat cultivar were collected. The grain and flour samples were to analysis for DON and NIV by gas chromatography and ZEA by high performance liquid chromatography. The result showed that the average of FHB incidence(%) per square meter in 2011 and 2012 were 4.2%, 0.5% respectively. There were significant cultivar differences for FHB incidence ranged from 0% to 24% in 2011. All of 32 wheat cultivars contained 9-2088 ng/g for NIV and ten wheat cultivars contained 5.7-8.5 ng/g for ZEA. In addition, DON concentration of Tapdong, Shinmichal1, and Hanbaek were 217, 35 and 683 ng/g respectively. However, the grain and flour sample harvested in 2012 showed that lower FHB incidence and NIV concentration. These results showed that the 32 wheat cultivars harvested in 2011 were heavily contaminated with Fusarium mycotoxins (NIV, DON, ZEA).
        8.
        2014.07 서비스 종료(열람 제한)
        Stem rust of wheat caused by Puccinia graminis f. sp. Tritici is historically one of the most important diseases of crops worldwide. The objective of this study was to screen the growth habits and yield of wheat accessions in Korea winter condition. We collected ninety stem rust resistant germplasms from USDA-Grain and planted for the characteristics of growth and yield in 2013. We measured the growth characteristics such as the plant type, leaf color, heading date, stem length, spike length, awn length, number of spikelet, number of tiller, and 1,000 kernel weight (g). Early maturity is most important wheat breeding target in double cropping system such as Korea. Heading dates of ninety cultivars ranged from May 17 to June 7. The Keumkang control cultivar headed on May 23. Heading dates of seventeen accessions had as early as Keumkang control (May 23). The numbers of semi-erect and intermediate type for growth habit were 45 and 33 respectively. The 1000 kernel weights were also measured. Mean 1000 kernel weights ranged from 16.7g (Webster) to 41.8g (123 A1C2). The average of stem length was 100.2cm and Keumkang was 58.4cm. These results showed that A4849-60P-7P-1P (Chile), MG 31492 (Ethiopia), 1338.F.6.C.3.B (Kenya), 1203 A1C2 (Kenya), and II-90-20/3-1R-1M- 3R (Mexico) were best lines for agronomic characteristic such as early heading date and grain yield
        9.
        2014.07 서비스 종료(열람 제한)
        Fusarium head blight (FHB), primarily caused by Fusarium graminearum is a major disease problem on wheat and barley around the world. The objectives of this study were to evaluate for FHB resistance under greenhouse and filed condition in 2012 and 2013. We screened for Type I resistance in the field using spray inoculation and for Type II resistance in the greenhouse using single floret inoculation. Sumai 3 and Ning7840 were used the FHB resistant check. Five hundred and twelve lines were evaluated for resistance to initial infection (type I) and to spread of symptoms within spike (type II). The inoculum was F. graminearum (GZ3639) prepared at a concentration of 1 X 105 macroconidai/ml with Tween 20. The field screening plots were inoculated twice and mist-irrigation was applied to facilitate FHB development. FHB severity was assessed visually 21 days and determined as the percentage of symptomatic spikelets from the total of all spikelets observed in 20 spikes. Both in the greenhouse and field test, we could observe five categories of FHB severity: resistant (R: 0-20%), moderately resistant (MR: 21-40%), moderate (M: 41-60%), moderately susceptible (MS: 61-80%), and susceptible (S: 81-100%). The results showed that seventy seven lines showed the R and MR category on FHB severity. In addition, nine lines showed similar FHB severity compared to Sumai 3 (13.3%).
        10.
        2013.07 서비스 종료(열람 제한)
        Fusarium head blight (FHB), caused by Fusarium graminearum is a major disease problem on wheat and barley in Korea. The objectives of this study were to evaluation of korean wheat cultivars for Type I and Type II resistance to FHB. We screened for Type II resistance in the greenhouse using single floret inoculation and for Type I resistance in the field using spray inoculation. Sumai 3 was used the FHB resistant check. Thirty-two korean wheat cultivars were evaluated for resistance to spread of symptoms within spike. The 2013 field screening with wheat cultivar was located in Kimjae-si Joeonbuk Korea. All plots were inoculated twice. Mist-irrigation was applied to facilitate FHB development. FHB severity was assessed visually 21 days after inoculation on 20 arbitrarily selected spikes per plot. FHB severity was determined as the percentage of symptomatic spikelets from the total of all spikelets. For FHB resistance, the average of FHB severity of Type I exhibited ranging from 21.9% to 77.2% and FHB severity of Type II ranging from 20.8% to 100%. Namhae, Milseong, Geuru, Joen, Anbaek and Sukang were the moderately resistant cultivars while Gobun, Alchan, Dajoong, Eunpa, Shinmichal1, Eunpa and Uri were the most susceptible cultivars for Type II resistance.
        11.
        2012.07 서비스 종료(열람 제한)
        Fusarium head blight (FHB), caused by Fusarium graminearum is a major disease problem on wheat and barley in Korea and around the world. We screened for Type II resistance in the greenhouse using single floret inoculation and for Type I resistance in the field using spray inoculation. Sumai 3 was used the FHB resistant check. Three hundred and seventy lines were evaluated for resistance to spread of symptoms within spike (type II). The 2012 field screening with 300 wheat lines was located in Kimjae-si Joeonbuk Korea. All plots were inoculated twice. The first inoculation was applied at anthesis for wheat. The second inoculation was applied three days after the initial inoculation (dai) for each plot. The inoculum was F. graminearum (GZ3639) prepared at a concentration of 100,000 macroconidai/ml with Tween 20 added as a wetting agent. Mist-irrigation was applied from the first inoculation on May 7 till June 7 to facilitate FHB development. FHB severity was assessed visually 21 days after inoculation on 20 arbitrarily selected spikes per plot. FHB severity was determined as the percentage of symptomatic spikelets from the total of all spikelets observed in these 20 spikes. Based on the field test, we could observe four categories of FHB severity: resistant (R: 0-20%), moderately resistant (MR: 21-40%), moderately susceptible (MS: 41-60%), and susceptible (S: 61-100%). The results showed that forty four lines showed the resistant category on FHB severity between 2.7% and 19.8%. In addition, ten lines showed similar FHB severity compared to Sumai 3 (9.9%).
        12.
        2012.07 서비스 종료(열람 제한)
        A New six-rowed Naked Barley Cultivar “Nurichal” with good coking quality was developed by cross with HB88154-B-25-1 line and Hinchalssalbory by the Winter Cereal and Forage Crop Research Div. NICS, RDA in 2010. HB15305-B-B-31-2 was selected in 2006 and designated as ‘Iksan 95’. It showed good agronomic performance in the regional yield trials (RYT) from 2008 to 2010 and was released with the name of ‘Nurichal’ possessing good water absorption and expansion. The average heading and maturing dates of ‘Nurichal’ were April 24 and May 30 in paddy field, which were two day and one day later than those of the check cultivar ‘Saechalssalbori’ respectively. The new cultivar, ‘Nurichal’, had 82cm of culm length that was 5cm shorter than that of ‘Saechalssalbori’, and 4.0cm of spike length. It showed 774 spikes per m2, 63 grains per spike, 25.0 g of 1,000-grain weight, and 793 g of test weight. ‘Nurichal’ showed a little weaker winter hardiness than those of the check cultivar, ‘Saechalssalbori’ and showed similar lodging resistance with check cultivar. It sowed stronger resistance to barley yellow mosaic virus (BaYMV) compare to check cultivar. Grain shape was small and round. Protein content was 10.3% and β-glucan content was 6.8%. Its average yield of the pearled grain in the regional yield trial was 3.84 MT/ha in paddy field, which were higher 2% than those of the check cultivar. Its water absorption was similar and expansion was higher than ‘Saechalssalbori’. This cultivar would be suitable for the area above the daily minimum temperature of -6℃ in January in Korean peninsula.
        13.
        2010.04 KCI 등재 서비스 종료(열람 제한)
        Pearling, an important primary process on food barley utilization, refers to the gradual removal of grain tissues starting from the outer grain tissues/layers, bran, and germ. The removal of barley bran through pearling yields a bright white kernel that is ideal for various food applications. The removed grain layers are usually sold as feed. However, its use for producing various innovative food products such as high-fiber functional pasta. Here we investigated composition of pearled barley. Barley grains from two hull-less varieties, Saechalssal and Hinchalssal, were pearled to various degrees(10-60%). The composition (protein, β-glucan, fat, ash, total phenol and proanthocyanidin) of pearled barley fractions flour(PF) was determined. Protein, fat, ash, total phenol and proanthocyanidin content was decreased in PF according to increasing pearling degree. Hunter L value and whiteness was increased. β-glucan content also was increased from 3.35, 2.73% to 8.9, 9.3% in Sachalssal and Hinchlssal individually. PF of Sachalssal and Hinchalssal showed different content in all components. Protein content was the highest in 90~80% flour fraction. Total phenol, proanthocyanidin and crude fat content was the highest in outer grain layer, bran(100~90% fraction) than other fractions.
        14.
        2010.04 KCI 등재 서비스 종료(열람 제한)
        Barley (Hordeum vulgare L.) and barley byproduct, waxy and non waxy genetic type, were prepared and investigated for its biological activity. The total phenolic contents, tyrosinase and xanthin oxidase inhibition activity of the barley extracts were measured and compared with those of a barley byproducts extracts powder. The contents of total phenolic compounds of the barley byproducts, waxy and non waxy type, were 18.60 and 17.92 mg/g of sample, respectively. Inhibition rates (%) of the mushroom tyrosinase of the waxy type barley and barley byproducts extracts powder were 16.30 and 33.60% at 250 ppm, respectively. Tyrosinase inhibition activity of barley byproduct extracts regardless of waxy and non waxy type showed higher than that of arbutin (5%). The samples showed an inhibition effect of xanthin oxidase. At 2,500 ppm of sample concentration, the inhibition effect of xanthine oxidase of waxy type barley (WB), non waxy type barley (NB), waxy type barley byproducts (WBP), and non waxy type barley byproducts (NBP) was 9.92, 16.06, 14.11, and 13.86%, respectively.
        15.
        2006.12 KCI 등재 서비스 종료(열람 제한)
        Three rice cultivars of Goami2 (G2), Ilpumbyeo (IP), and Baegjinju (BJJ) of which physicochemical properties are significantly different, were blended by a simplex-lattice mixture design. The effect of blending those rice cultivars on pasting and texture properties were observed. Rapid Visco Analysis (RVA) indicated that the onset gelatinization temperature of pure blend of G2 rice (83.80~pm0.07~circC) was higher than that of IP (68.08~pm0.01~circC) and BJJ (68.08~pm0.04~circC) . Increasing G2 rice resulted in lower peak and breakdown viscosity, and adhesiveness and cohesiveness, whereas higher setback viscosity and hardness. Pasting and texture properties of IP and BJJ indicated that G2 rice has quite different physical characteristics compared to IP and BJJ. Thus, it is expected that blending those three rice cultivars can be used to formulate a desirable rice blend on purpose, furthermore to promote the consumption of G2 rice, which has higher indigestible carbohydrate contents.