• 제목/요약/키워드: Root industry

검색결과 439건 처리시간 0.023초

채소 식품의 건강 이미지가 기호와 섭취에 미치는 영향 (Influence of Healthy Image on Preference and Intake of Vegetables)

  • 박모라
    • 동아시아식생활학회지
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    • 제23권2호
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    • pp.141-152
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    • 2013
  • This study investigated the effects of image on the preference and intake frequency of 19 vegetables. A total of 359 usable surveys were collected using a convenient sampling method. The subjects included females (51.8%), university students (50.7%), home residents (66.9%) and subject's spending 20,000~40,000 won on meals/week (41.5%) and eat out 2~3 times/week (29.5%). The intake frequency of vegetables was 2~3 times per month. The healthy image of all vegetables was good overall and the average preference was 3.78 (out of 5 on the Likert). Tomatoes had the healthiest image, onions the highest preference, and Korean cabbage the highest intake frequency. For males, the vegetable with the healthiest image was sesame leaf, while the healthiest foods for females were broccoli and tomatoes. Elementary students had a healthier image of cucumber, bean sprouts, radish, sesame leaf, lettuce, radish leaf, and cabbage than university students and adults. Home residents had a healthier image of cabbage and burdock than other types of residents. Subject that st over 20,000 won per week on meals had a higher image of most vegetables. In terms of preference, males liked Korean cabbage, green pumpkin, balloon flower roots, radish leaf, and lotus root, but female liked tomatoes. In addition, elementary students, home residents, and subjects who eat out less often tended to prefer vegetables. In terms of intake, there was a high frequency of intake for all vegetables in adults. Home residents specifically had a higher intake of cucumber, carrot, bean sprouts, spinach, green pumpkin, balloon flower roots, lettuce, radish leaf, broccoli, burdock, lotus root, and tomato. Overall, the healthy image of vegetables had a positive influence on their preference and intake frequency. Therefore, to encourage the intake of vegetables, direct or indirect variables should be examined.

일정압력하에서 1-propanol/benzene 계의 기-액 상평형 (Isobaric Vapor-Liquid Equilibrium of 1-propanol and Benzene System at Subatmospheric Pressures)

  • 노선균;강춘형
    • Korean Chemical Engineering Research
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    • 제56권2호
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    • pp.222-228
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    • 2018
  • 석유화학산업의 대표적인 물질로 쓰이는 벤젠은 각종 화학 제품의 기초 물질이다. 그러나 일반적으로 벤젠은 석유화학 산업에서 순수 물질로 존재하지 못하고 알코올류와 벤젠 혼합물로 존재하게 된다. 또한 알코올을 한 성분으로 하는 혼합물은 공비 혼합물이 생성되기 때문에 분리 정제를 위해서는 상평형 데이터가 필수적이다. 본 연구에서는 알코올을 대표하는 1-프로판올을 사용하여 1-프로판올/벤젠 계에 대하여 재순환 평형장치를 이용하여 평형 온도/압력 효과에 따른 상평형 연구를 수행하였다. 측정된 기-액 평형 데이터는 UNIQUAC 식과 WILSON 식을 이용하여 상관관계 시키고 Gibbs/Duhem식을이용하여열역학적건전성을확인하였다. 상평형실험결과 RMSE (Root Mean Square Error)와 AAD (Average Absolute Deviation)는 두 모델식에서 0.05 이하의 값을 보여 실험값과 계산 값이 잘 일치함을 알 수 있었다. 또한 Gibbs/Duhem식을 이용하여 열역학적 건전성을 판별한 결과 잔류항 값이 ${\pm}0.2$ 이내에 분포하는 것을 통해 데이터에 대한 건전성을 확인할 수 있었다.

박피마늘 뿌리부분을 이용한 Oleoresin의 제조 및 저장조건 (Preparation and Storage Conditions of Oleoresin from Root Portion of Peeled Garlic)

  • 김상균;차보숙;김우정
    • 한국식품과학회지
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    • 제30권6호
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    • pp.1321-1326
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    • 1998
  • 박피마늘 제조과정 중 폐기되는 마늘 뿌리부위의 이용을 위해 oleoresin의 제조 및 저장 조건을 검토하였다. 여러 가지 용매를 사용하여 $30{\sim}50^{\circ}C$에서 추출하였을 때 ethanol과 methanol이 $27{\sim}37%$의 높은 고형분 수율을 보여주었고 추출시간은 2시간이 적절하였다. 진공 또는 질소충진 조건에서 저장하였을 때 공기존재하에서 저장한 것보다 pH와 총산도, 색, thiosulfinate의 변화가 현저히 적었다. Thiosulfinate의 함량은 저장중 모든 저장조건에서 감소함을 보였다. 질소충진하에서 저장 중 glucose와 sucrose 함량은 증가하였으며 유기산은 감소하였다. Oleoresin에 ascorbic acid와 cysteine의 첨가는 저장 중 마늘향기를 보존하는데 유익하였다.

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강활 노두의 정식적기 (Optimum Transplanting Time of Ostericum koreanum Kitakawa)

  • 허봉구;심용구;김영효;김수용;최경배
    • 한국약용작물학회지
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    • 제14권1호
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    • pp.41-44
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    • 2006
  • 강활의 재배면적 136 ha 중에서 재배면적이 70%에 달하는 북강활의 노두번식 재배시 묘종의 정식적기를 구명하기 위하여 정식기를 3월 20일부터 10일 간격으로 5월 1일까지 정식하여 생육 및 수량을 조사한 결과는 다음과 같다. 1. 시험전 토양의 화학성은 비옥도가 중간정도인 보통밭이었다. 2. 재배 기간중의 3년간 평균기온은 3월 하순을 제외하고 평년에 비해 낮은 편이었으나 4월 중순 이후의 강우량은 많았다. 3. 정식시기가 빠를수록 출현율, 추대율이 높았으며 초장과 경장이 길고, 분지수가 많았으며 생육도 양호하였으나 경직경은 일정한 경향이 없었다. 4. 수량구성 요소들은 4월 1일 정식한 구에서 가장 좋았으며 수량도 251 kg/10g으로 3월 20일 정식한 구보다 13% 증수되어 정식적기는 4월 1일 전후가 적당할 것으로 생각된다.

다양한 부위별 연 추출물의 항혈전 활성 (In-vitro Anti-thrombosis Activities of Different Parts of Nelumbo nucifera Gaertner)

  • 안선미;성화정;김종식;박종이;손호용
    • 한국미생물·생명공학회지
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    • 제46권4호
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    • pp.372-376
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    • 2018
  • 연(Nelumbo nucifera Gaertner)으로부터 신규의 유용 생리활성을 확인하기 위해, 연잎, 연자방, 연자육, 연자심, 우절 및 연근으로부터 각각 ethanol 추출물을 제조하고, 현재까지 보고되지 않은 항혈전 활성을 평가하였다. 그 결과, 연근, 연잎 및 연자심 추출물은 항응고 활성이 인정되지 않았으나, 우절, 연자방 및 연자육 추출물에서는 강력한 TT, PT, aPTT 연장효과를 나타내었으며, aspirin 보다 강력한 항응고 활성을 나타내었다. 또한 혈소판 응집저해 활성 평가 결과, 우절, 연잎, 연자방, 연자육 추출물에서 응집저해가 나타났으며, 가장 강력한 응집저해는 연자방과 연자육에서 확인된 바, 이는 아스피린에 필적하는 강력한 활성이었다. 상기 활성 추출물은 1.0 mg/ml 농도까지 인간 적혈구 용혈활성이 없음을 확인하여, 우절, 연자방 및 연자육 추출물이 신규의 항혈전제로 사용 가능함을 제시하였다.

잠재요인 모델 기반 영화 추천 시스템 (Movie Recommendation System based on Latent Factor Model)

  • ;김강철
    • 한국전자통신학회논문지
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    • 제16권1호
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    • pp.125-134
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    • 2021
  • 영화 산업의 빠른 발전으로 영화의 제작 수가 급격하게 증가하고 있으며, 영화 추천 시스템은 관객들의 과거 행동이나 영화 후기에 기반하여 관객들의 선호도를 예측하여 영화의 선택에 도움을 주고 있다. 본 논문은 평점의 평균과 편향의 보정을 이용하여 잠재요인 모델에 기반한 영화 추천 시스템을 제안한다. 특이값 분해 방법이 평점 매트릭스 분해에 사용되고, 통계 경사 하강법이 최소자승 손실 함수의 파라미터 최적합에 사용된다. 그리고 평균 제곱근 오차를 사용하여 제안한 시스템 성능을 평가한다. Surprise 패키지를 이용하여 제안한 시스템을 구현 하였으며, 모의실험 결과는 평균 제곱근 오차가 0.671이며, 다른 논문에서 방법에 비하여 좋은 성능을 가진다는 것을 확인하였다.

데이터 기반 모델에 의한 강제환기식 육계사 내 기온 변화 예측 (Data-Based Model Approach to Predict Internal Air Temperature in a Mechanically-Ventilated Broiler House)

  • 최락영;채영현;이세연;박진선;홍세운
    • 한국농공학회논문집
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    • 제64권5호
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    • pp.27-39
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    • 2022
  • The smart farm is recognized as a solution for future farmers having positive effects on the sustainability of the poultry industry. Intelligent microclimate control can be a key technology for broiler production which is extremely vulnerable to abnormal indoor air temperatures. Furthermore, better control of indoor microclimate can be achieved by accurate prediction of indoor air temperature. This study developed predictive models for internal air temperature in a mechanically-ventilated broiler house based on the data measured during three rearing periods, which were different in seasonal climate and ventilation operation. Three machine learning models and a mechanistic model based on thermal energy balance were used for the prediction. The results indicated that the all models gave good predictions for 1-minute future air temperature showing the coefficient of determination greater than 0.99 and the root-mean-square-error smaller than 0.306℃. However, for 1-hour future air temperature, only the mechanistic model showed good accuracy with the coefficient of determination of 0.934 and the root-mean-square-error of 0.841℃. Since the mechanistic model was based on the mathematical descriptions of the heat transfer processes that occurred in the broiler house, it showed better prediction performances compared to the black-box machine learning models. Therefore, it was proven to be useful for intelligent microclimate control which would be developed in future studies.

Genome-wide identification and expression profiling of the pectin methylesterase gene family in Citrus sinensis (L.) Osbeck

  • Ho Bang Kim;Chang Jae Oh;Nam-Hoon Kim;Cheol Woo Choi;Minju Kim;Sukman Park;Seong Beom Jin;Su-Hyun Yun;Kwan Jeong Song
    • Journal of Plant Biotechnology
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    • 제49권4호
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    • pp.271-291
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    • 2022
  • Pectin methylesterase (PME) plays an important role in vegetative and reproductive development and biotic/abiotic stress responses by regulating the degree of methyl-esterification of pectic polysaccharides in the plant cell wall. PMEs are encoded by a large multigene family in higher land plant genomes. In general, the expression of plant PME genes shows tissue- or cell-specific patterns and is induced by endogenous and exogenous stimuli. In this study, we identified PME multigene family members (CsPMEs) from the sweet orange genome and report detailed molecular characterization and expression profiling in different citrus tissues and two fruit developmental stages. We also discussed the possible functional roles of some CsPME genes by comparing them with the known functions of PMEs from other plant species. We identified 48 CsPME genes from the citrus genome. A phylogenetic tree analysis revealed that the identified CsPMEs were divided into two groups/types. Some CsPMEs showed very close phylogenetic relationships with the PMEs whose functions were formerly addressed in Arabidopsis, tomato, and maize. Expression profiling showed that some CsPME genes are highly or specifically expressed in the leaf, root, flower, or fruit. Based on the phylogenetic relationships and gene expression profiling results, we suggest that some CsPMEs could play functional roles in pollen development, pollen tube growth, cross incompatibility, root development, embryo/seed development, stomata movement, and biotic/abiotic stress responses. Our results shed light on the biological roles of individual CsPME isoforms and contribute to the search for genetic variations in citrus genetic resources.

뿌리업종 중견중소기업의 설비 AI 플랫폼 구축에 관한 사례연구 (Case Study on the Implementation of Facility AI Platform for Small and Medium Enterprises of Korean Root Industry)

  • 이병구;문태수
    • 한국정보시스템학회지:정보시스템연구
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    • 제32권3호
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    • pp.205-224
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    • 2023
  • Purpose This study investigates the impact of organizational characteristics on organizational performance through case studies of smart factory implementation in the context of Korean small and medium Enterprises (SMEs). To achieve this goal, this study adopts the smart factory index of KOSMO (Korea Smart Manufacturing Office) established by Korean Ministry of SMEs and Startups. We visited 3 firms implemented smart factory projects. This study presents the results of field study in detail with evaluation criteria on how organizational competences like AI technology adoption and facility automation can be exploited to positively influence organizational performance through smart factory implementation. Design/methodology/approach There are not so many results of empirical studies related to smart factories in Korea. This is because organizational support and user involvement are required for facility AI platform service beyond factory automation after the start of the 4th Industrial Revolution. Korean government's KOSMO (Korean Smart Manufacturing Office) has developed and proposed a level measurement index for smart factory implementation. This study conducts case studies based on the level measurement method proposed by KOSMO in the process of conducting case studies of three companies belonging to the root and mechanic industries in Korea. Findings The findings indicate that organizational competences, such as facility AI platform adoption and user involvement, are antecedents to influence smart factory implementation, while smart factory implementation has significant relationship with organizational performance. This study provides a better understanding of the connection between organizational competences and organizational performance through smart factory case studies. This study suggests that SMEs should focus on enhancing their organizational competences for improving organizational performance through implementing smart factory projects.

Antagonistic Efficacy of Symbiotic Bacterium Xenorhabdus sp. SCG against Meloidogyne spp.

  • Jong-Hoon Kim;Byeong-Min Lee;Hyung Chul Lee;In-Soo Choi;Kyung-Bon Koo;Kwang-Hee Son
    • Journal of Microbiology and Biotechnology
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    • 제34권8호
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    • pp.1627-1635
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    • 2024
  • The inhabitation and parasitism of root-knot nematodes (RKNs) can be difficult to control, as its symptoms can be easily confused with other plant diseases; hence, identifying and controlling the occurrence of RKNs in plants remains an ongoing challenge. Moreover, there are only a few biological agents for controlling these harmful nematodes. In this study, Xenorhabdus sp. SCG isolated from entomopathogenic nematodes of genus Steinernema was evaluated for nematicidal effects under in vitro and greenhouse conditions. The cell-free filtrates of strain SCG showed nematicidal activity against Meloidogyne species J2s, with mortalities of > 88% at a final concentration of 10%, as well as significant nematicidal activity against the three other genera of plant-parasitic nematodes in a dose-dependent manner. Thymine was isolated as active compounds by assay-guided fractionation and showed high nematicidal activity against M. incognita. Greenhouse experiments suggested that cell-free filtrates of strain SCG efficiently controlled the nematode population in M. incognita-infested tomatoes (Solanum lycopersicum L., cv. Rutgers). In addition, a significant increase in host plant growth was observed after 45 days of treatment. To our knowledge, this is the first to demonstrate the nematicidal activity spectrum of isolated Xenorhabdus species and their application to S. lycopersicum L., cv. Rutgers under greenhouse conditions. Xenorhabdus sp. SCG could be a promising biological nematicidal agent with plant growth-enhancing properties.