• 한국식생활문화학회지
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• 제27권3호
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• pp.240-250
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• 2012

This study was performed to investigate the consumption of coffee beverages and energy contribution ratios of coffee beverages and accompanying snacks by college students in Deajeon City and Chungnam Province in Korea. Questionnaire survey, dietary survey, and snack survey using food record method during 3-days were carried out. As a result, we found that 86.9% of male students and 75.6% of female students consumed coffee beverages usually, with no differences between the two groups. However, the frequency of coffee beverages consumed by female students out-numbered that of male students by 1 cup a day to 1-2 cups a week (p<0.05). Furthermore, male students most likely consumed coffee beverages at schools or academies, but female students consumed them at coffee shops (p<0.01). The reasons male students gave to consume coffee beverages were for scent, taste, fatigue, and to stay awake. Similarly, the reasons female students gave to consume coffee beverages were for scent, taste, habit, and to stay awake (p<0.01). Fully 58.1% of male students and 80.0% of female students ate snacks along with coffee beverages (p<0.01). Most male students substituted a coffee beverage and accompanying snack for a regular meal once a month. Female students were doing it at most 2-3 times a month (p<0.05). The mean daily dietary energy intake of male students was 1,924 kcal/d, and of female students was 1,518 kcal/d (p<0.001), which both were below the estimated energy requirements. Male students obtained 285.6 kcal/d and female students obtained 289.5 kcal/d from coffee beverages and accompanying snacks. There was a significant different in dietary intake of energy (p<0.05), calcium, and iron (p<0.001) for each ratio of reference intake between male and female students. The students who ate larger amounts of coffee beverages and accompanying snacks consumed less dietary energy, protein, calcium, and iron, respectively (p<0.05). These results show that many students consume coffee beverages regularly and obtain large amounts of energy from coffee beverages and accompanying snacks. It also shows that student's dietary nutrient intake tends to be poorer, as he or she obtains more energy from coffee beverages and accompanying snacks. Therefore, it is critical to monitor the influence of consumption of coffee beverages and accompanying snacks on the dietary nutrient intakes and health of college students, and to provide nutrition education about the proper consumption of coffee beverages and accompanying snacks based on scientific evidence.

• 현장농수산연구지
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• 제24권1호
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• pp.5-13
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• 2022

우리나라 남부와 서해 해안가를 중심으로 자생하고 있는 순비기나무는 자원 활용 측면에서 많은 활용 가치를 가지고 있다. 예로부터 민간에서 민간약재로 이용하거나 한약재로 사용되었다. 잎과 줄기에서도 강한 향이 나지만 열매에서도 강한 향이 나서 순비기나무 열매를 이용해 에센스오일을 추출하여 성분을 분석한 연구는 일부 있지만 하이드로졸을 추출하여 이에 대한 향기성분의 연구는 거의 없다. 이유는 열매가 딱딱하여 일반적인 추출방법으로는 함유된 유효 성분을 확인하는 것이 어렵기 때문이다. 따라서 본 연구는 추출방법을 달리하여 딱딱한 열매를 고온으로 추출하여 얻은 하이드로졸의 향에 함유된 성분을 분석한 결과는 다음과 같다. 1. 플라보노이드 함량이 가장 많은 추출조건은 ethanol로 30.57mg/g 이었고 다음으로 열수추출물로 18.26mg/g, 물 추출물이 가장 낮은 9.69mg/g이었다. 2. 순비기나무 열매를 증류추출한 결과 하이드로졸의 향기는 3-Methyl-2-butenoic acid, cyclobutyl ester, Eucalyptol, L-alpha-Terpineol, 1H-Cycloprop[e] azulen-7-ol, decahydro-1,1,7-trimethyl-4-methylene-, [1ar-(1a.alpha.,4a.alpha.,7.beta.,7a.beta.,7b. alpha.)]가 많은 것으로 나타났다.

• 대한화장품학회지
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• 제50권2호
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• pp.163-170
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• 2024

문헌에 따르면, 천연 추출물 또는 천연 에센셜 오일을 포함한 화장품 향의 흡입으로 뇌파 변화가 유도된다는 사례가 보고되어 있다. Angelica gigas (AG)와 Cnidium officinale (CO)는 건강을 개선하는 전통 약재로 동아시아 국가에서 널리 사용되고 있으나, 이들의 향을 흡입하여 뇌파(EEG)기록을 통해 뇌 활동 변화를 평가한 이전 보고는 없었다. 본 연구에서는, Artemisia princeps var. orientalis (Compositae), AG, and CO와 같은 천연 약초 추출물의 향을 흡입하고 후각 자극으로 감정적인 상태 변화가 야기되는지에 대한 평가를 하였으며, 20 ~ 30 세 시험대상자를 대상으로 천연 약초 추출물의 향을 흡입하기 전과 후에 뇌 활동을 EEG기록을 통해 확인하였다. 또한 향을 흡입하는 동안 자율신경계 변화는 심전도(ECG) 기록을 통해 심장의 전기적 활동을 관찰하였다. 시험 결과, 양성 대조군인 라벤더를 포함하여 Compositae, AG, CO 추출물의 향을 맡으면 뇌의 전반 영역에서 뇌파의 relative alpha power 와 alpha/beta ratio가 크게 증가하는 결과를 나타냈다. ECG 기록은 Compositae 향의 흡입이 low-frequency/high-frequency 비율을 유의미한 수준으로 감소시켰다. 결론적으로 전통 약초 추출물 향의 흡입은 뇌파와 자율신경계 변화가 유도하여 감성적 편안함과 심리적 안정감에 도움을 줄 수 있음을 확인하였다.

• Journal of Forest and Environmental Science
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• 제28권4호
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• pp.268-277
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• 2012

Among the domestic softwoods, technical value of Pinus koraiensis small diameter logs which have comparatively low applicability was evaluated and sensitive characteristics and physical characteristics were investigated and analyzed for examining if it can be utilized as the interior decoration material. For the sensitive characteristics of Pinus koraiensis, wood figure, wood grain, wood color and odor were evaluated and for the physical characteristics, growth-ring width and latewood percentage, abrasion, density, shrinkage, swelling, absorption, roughness and hardness were evaluated. Then, the possibility to be developed as the interior decoration material was found. As the result of evaluating sensitive characteristics and physical characteristics of domestic Pinus koraiensis, wood figure, wood grain, color and scent clearly were judged to have excellent visual factor as the interior decoration material. And, physical characteristics were also judged to be excellent, so it is judged to be developed as the interior decoration material. Therefore, as the result of various forms of design pattern with domestic Pinus koraiensis small diameter logs, several patterns of interior decoration can be developed by characteristics of each side and colors of heartwood and sapwood. And, in the future, it can be applied to furniture design or interior decoration material for the proper use. Especially, it is considered to contribute to wood applying industry through the study on the quality of domestic small diameter logs which have low applicability.

• International Journal of Knowledge Content Development & Technology
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• 제7권4호
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• pp.27-50
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• 2017

The impact of social networking is varied from good to bad. Online activities have also been categorized into pros and cons of social networking, either as reported as hiding Internet activities among teenagers or killing loneliness among elderly. In terms of relationships, there have been argument over its closeness and quality of an online relationship in Internet settings. Looking at the contradiction in an innovative interaction between classic community communication and social media, there is an unknown scent of the future struggling and challenging both human communication and relationships in the presence of digital culture. This research uses Diffusion of Innovation to study the wide and continuous spread of digital culture in human communication; and, Media Dependency in learning and structuring the cognitive, affective and behavioral effects of social media on each person uses the media in different ways. This research will be using online survey to gain opinions from a social network site as an update of views and reflection of self-awareness to all levels of people. Social media like Facebook (FB) is perceived as a good tool of communication that it is able to bring closeness among the family members. The results show that social media like FB brings positive impact towards family members; it would help to build a better and harmonic society; and, relationships among family members and communication shall be improved and enhanced to the level of a united society.

• 한국주거학회:학술대회논문집
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• 한국주거학회 2009년도 추계학술발표대회 논문집
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• pp.115-120
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• 2009

Since the middle of 1990, "High Rise Residential Complex" has been started to construct to fulfill the use of high density land use. In addition, it bacame a major solution for a rehabilitation project to achieve a high volume ratio, which in turn brings a good business. In this study, POE is applied to secure residential satisfaction level between Apartment and High Rise Residential complex. Also life style differences are investigated between the two type of complexes. It was resulted that recent High Rise Residential Complex is quite acceptable in most respects, however interior vetillation and direct wind flow from living space through dining - kitchen to ease the cooking scent is not a satisfactory level. These two factors are most highly demanded for future design of High Rise Complex in considering specialties in our cultural life style.

• 한국항행학회논문지
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• 제14권4호
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• pp.512-520
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• 2010

유비쿼터스와 모바일의 광범위한 응용과 더불어 통신 보안은 최근 중요한 관심사가 되고 있다. 따라서 각각의 보안 요소마다 다양한 기법 및 응용에 대한 연구와 시스템적 응용에 대한 연구가 활발히 이루어지고 있다. 본 논문에서는 음성의 특징을 이용한 모바일 OTP의 일회용 암호키를 생성하는 방법을 제안한다. 본 연구는 강력한 개인 인증에 사용되는 바이오매트릭스의 음성 정보를 이용하여 가변적이고 안전한 일회용 암호 키를 생성하였으며, 또한 제안 기법에 대한 덴드로그램(dendrogram)을 이용한 음성 특징점에 의한 준동형적(homomorphic) 가변성 그리고 음성 특징점의 분포를 시뮬레이션 하였다.

• 한국작물학회지
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• 제44권3호
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• pp.181-185
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• 1999

To compare the composition of volatile flavor components of three different cultivars of rice, Hyangnambyeo (aromatic cultivar), Heugjinjubyeo (pigmented cultivar) and Dongjinbyeo (normal cultivar), the volatile flavor components of brown rice were isolated by Likens-Nickerson simultaneous steam distillation and extraction apparatus. The flavor concentrates obtained were analyzed by gas chromatography and gas chromatography-mass spectrometry. A total of 65 components, including 14 aliphatic aldehydes and ketones, 7 aliphatic alcohols, 8 aromatic alcohols, 13 hydrocarbons, 9 esters, 7 aliphatic acids, and 7 miscellaneous components were identified. The aliphatic aldehydes, which are known as contributors to the overall flavor of cooked rice, were present in larger amounts in Hyangnambyeo than in Heugjinjubyeo and Dongjinbyeo, while the difference in quantity of these components between Heugjinjubyeo and Dongjinbyeo was not remarkable. Hyangnambyeo and Heugjinjubeyo contained 562 ng and 259 ng of 2-acetyl-1-pyrroline per gram of brown rice based on dry weight, respectively, which is a key compound contributing to the popcorn-like aroma in aromatic rice. Dongjinbeyo contained about 6 ng.

• Applied Biological Chemistry
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• 제48권3호
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• pp.292-295
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• 2005

Branched methyl group을 가지는 아프리카산 난(Aerangis confusa, Aerangis kirkii) 꽃의 천연향기성분인 methyl 3-methyloctanoate를 값싼 미생물 발효산물인 itaconic acid를 출발 물질로 하여 제조한 branched metyl group을 부분구조로 가지는 2-methyl-1,4-butandiol를 중간체로 하여 전 공정 9단계로 합성하였다. 최종 향기성분 metyl 3-methyloctanoate의 methyl ester대신 다양한 알킬 ester 화합물을 합성하여 그 향을 비교한 결과 서로 상이한 향 특성을 나타내므로 화장품이나 식품산업에 있어서 유용한 향료조성물의 첨가소재로 개발 가능하리라 사료된다.

• 한국환경복원기술학회지
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• 제19권6호
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• pp.31-40
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• 2016

This study identifies the basic personality types of subjects who use the healing garden and investigates their plants-preference. The purpose of the study is to provide a basic information about planting plan, considered as a main parts of healing garden. Survey results are stated as follows: First, the order of preference of instinct type tree is Prunus yedoensis, zelkova serrata, Phyllostachys Bambusoides. On the other hands, the order of preference of feeling and thinking type is Prunus yedoensis, zelkova serrata, Metasequoia glyptostroboides. Second, the order of preference of instinct type of flowers is Rosa hybrida, Hibiscus syriacus, Forsythia koreana. However, the preference of emotional type is the order of Rosa hybrida, cosmos bipinnatus, Helianthus annuus and the preference of accident type is the order of Rosa hybrida, Hibiscus syriacus, Helianthus annuus. Third, for the color preferences, instinct type prefer yellow color, feeling type and thinking type prefer red color. Lastly, when people view plants, most personality types are interested in flower firstly, and secondly type of tree and scent. In other words, we can assume that people are interested in the flowers, most noticeable in plants. This study will enhance the effectiveness of the healing garden by providing relevant information regarding healing garden planting plan. Future research should consider to widen the range of target of investigation in order to perform additional comparison analysis.