• KOREAN JOURNAL OF CROP SCIENCE
• /
• v.20
• /
• pp.87-94
• /
• 1975

By RH-531 treatments in Buheung, Suweon ＃ 165 and Suweon ＃ 18 of barley and Jangkwang, Namkwang and Suweon ＃ 85 of wheat, heading date and maturing date were delayed as the time of treatment delayed and as the concentration increased, field lodging in barley and lodging index in all cultivars were reduced, leaf growth after treatment showed erect elongation and darker green color, culm length and spike length and extrusion length were shortened, ripening ratio and yields were reduced, and protein contents in grain were increased. The effect of RH-531 treatment on each characteristics of each cultivars of barley and wheat was influenced more by treating time than concentration.

• Journal of Digital Convergence
• /
• v.19 no.8
• /
• pp.337-343
• /
• 2021

This study researched the user experience of the monthly magazine subscription service, focusing on design students and designers. The revenue of magazine industry has been declined since 2012 and some magazines stop publishing or cease to publish. That is why this studied the user experience of magazine subscription services of monthly to increase magazine sales revenue, the largest portion of whole revenue. A survey and in-depth interviews with subscribers and non-subscribers was conducted to suggest improvements for the monthly . Since this study focused on user experience of magazine subscription, it could be a future reference for studying magazine subscription service.

• Culinary science and hospitality research
• /
• v.17 no.2
• /
• pp.231-243
• /
• 2011

The purpose of this research is to investigate the variability of mulberry fruit products with the trend of increasing number of Mulberry farms and their fields. For this study, a survey on the number of usages of similar manufactured fruit products was conducted, and its results showed that 41.7% of industrial workers drink fruit products 3-6 times per week. The findings from the survey implies that industrial workers preferred the products in the order of syrup, frozen furee and jam while culinary students extracts, jam and syrup. Based on these research results, the primary product form of mulberry fruit for development would be syrup, sugar-free extracts and jam in order. As for bakery products, developing refrigeration products, bread and cake using mulberry fruit is highly required. When mulberry fruit products were used in food items, industrial workers and culinary students preferred vegetable and meat dishes, which means the necessity of developing dressings and sauces using mulberry fruit.

• Quality Improvement in Health Care
• /
• v.15 no.2
• /
• pp.83-86
• /
• 2009

연구배경: 수술적 치료가 필요한 척추관 협착증 환자들은 주로 60세 이상의 고령환자로 장기간의 입원 시 기회 감염의 증대와 불필요한 의료비의 증대를 가져오게 되며, 수술 후 환자들의 재원일수의 증가는 병원의 병상가동률을 감소시키고, 전공의에게는 불필요한 업무를 증가시킨다. 연구목적: 비용 효과면에서 최적화된 진료 지침의 개발은 불필요한 의료비의 감소 및 Hospital Induced Complication을 줄여 환자 만족도를 증진시킬 수 있으며, 각 환자에 대한 전공의 업무를 줄일 수 있다. 의료기관: 서울특별시에 소재한 2,075병상의 종합전문요양기관 연구방법: 정형외과 및 신경외과의 척추관 협착증 환자의 처방을 비교하여 최적의 표준진료지침을 개발하고 최종적으로 CP Master Program(EMR 프로그램)에 입력하여 환자에게 적용하였다. 연구결과: CP 적용 전, 후 비교를 통해 재원일수는 3.8일이 감소하였으며, 이에 따라 병상 가동률 및 진료수익이 증가했으리라고 예상되며 현재 비교 검토 중이다. 또한, CP 개발 및 CP Master Program의 사용을 통한 전공의 업무 감소에 대해 검토하고 있다.

• Applied Chemistry for Engineering
• /
• v.22 no.1
• /
• pp.72-76
• /
• 2011

In this study, we investigated the characteristics of biodiesel using the waste coffee oil which was extracted by waste coffee grounds. We tried to deduce the optimum conditions by defining the operating variables, such as mole ratio between methanol and coffee oil (6~18) and the reaction temperature ($45{\sim}60^{\circ}C$) in the biodiesel production processes. The performance was evaluated in terms of yields, contents of fatty acid methyl ester (FAME), viscosities, and heating values. The optimum reaction temperature was $55^{\circ}C$. Also, the best biodiesel was produced at the mole ratio between methanol and coffee oil of 12. The highest heating value of the produced biodiesel made from coffee oil was 39.0~39.4 MJ/kg, which satisfies the general standard for the biodiesel energy density, 39.3~39.8 MJ/kg.

• Journal of the Korea Convergence Society
• /
• v.12 no.11
• /
• pp.301-310
• /
• 2021

This study is qualitative research with an aim of assessing experience of prospective social work student enrolled in social welfare field practice during COVID-19 pandemic. The results are shown below. First, the major negative answers of responders were the work-study imbalance of the student, the institution's concern for spread of infection, limited experience due to low-quality-of supervision, the difficulty on choosing institution, and worries on stop of practice due to the COVID-19 pandemic. Second, the key positive answers of responders were awareness of true meaning of social welfare, a major of them, significance of field practice, importance of human rights in their field, and finally, dearness of rapport building between social workers and clients in social welfare practice settings.

• Proceedings of the Korea Water Resources Association Conference
• /
• 2023.05a
• /
• pp.464-464
• /
• 2023

최근 이산화탄소(Carbon Dioxode, CO₂) 배출량 증가로 인하여 지구온난화와 같은 기후변화 문제가 심각한 사회 문제로 대두되고 있다. 이에 따라 2015년 12월 12일 프랑스 파리에서 열린 제21차 유엔기후변화협약에서 교토의정서를 대체하는 파리협정(Paris Agreement)을 채택하였으며, 국내에서는 이러한 국제사회의 기후변화 대응에 동참하고 온실가스 감축을 이행하기 위한 2050 탄소중립 정책을 추진하였다. 이산화탄소를 다량으로 발생시키는 철강·산업·건설·에너지 분야 중건설 분야에서 배출되는 이산화탄소는 전체 배출량의 19.9%로 특히 시멘트를 제조하는 과정에서 많은 양의 이산화탄소가 배출되고 있다. 기존의 건설 분야 에서는 이산화탄소를 저감하기 위해 콘크리트 배합 또는 양생과정에서 챔버 내 이산화탄소를 가스 형태로 주입하여 탄산화 반응을 통해 콘크리트 내부에 이산화탄소를 영구히 저장시키고자 하였다. 그러나 이는 챔버 사용, 양생조건 등 적용 조건이 제한적이며, 콘크리트 내 이산화탄소 흡수 효율이 높지 않아 이를 개선할 수 있는 기술이 필요하다. 이를 개선하기 위해 최근에는 콘크리트 배합수 내 이산화탄소를 용해시켜 배합과정에서 콘크리트 내부로 이산화탄소를 강제로 인입시키는 연구들이 진행되고 있다. 그러나 콘크리트 배합수로 사용되고 있는 일반물이나 지하수의 경우 가압을 하여도 약 1,400mg/L의 이산화탄소를 용해시키며, 가압을 통해 용해된 이산화탄소는 쉽게 대기 중으로 방출되는 한계점을 지니고 있어 현장에서 사용하기 어려운 문제가 있다. 이러한 한계점을 극복하기 위해서 본 연구에서는 200nm 이하의 크기를 가지는 나노버블기술을 이용해 압력을 가하지 않은 상태에서 수중에 이산화탄소를 용해시킬 수 있는 시스템을 개발하고자 한다. 나노버블기술을 이용한 수중 이산화탄소용해 시스템을 통해 수중에 이산화탄소를 용해시켜 콘크리트 배합수로 활용하기 위한 기초 연구가 될 것으로 판단된다.

• Journal of the Korea Institute of Construction Safety
• /
• v.5 no.1
• /
• pp.25-30
• /
• 2023

The Serious Disaster Punishment Act, which has been in effect since January 27, 2022, requires employers or management managers who neglect safety measures to be punished by imprisonment for more than one year in the event of a serious disaster. As this Act on the Punishment of Severe Disasters came into effect this year, it has received a lot of attention from society. According to experts, most of the opinions are that the bill was created focusing on increasing punishment for companies, contrary to the original purpose of the bill to reduce the safety accident rate. This study confirmed whether these contents were true through case studies, and if this continues, the conflict between companies and workers will intensify and the safety accident rate will not decrease. Therefore, this study does not unconditionally increase corporate punishment, but compares many situations through surveys and suggests a way for companies and workers to cooperate with the Critical Accident Punishment Act to reduce the safety accident rate.

• Journal of the Korea Organic Resources Recycling Association
• /
• v.17 no.4
• /
• pp.66-73
• /
• 2009

Temperature phase anaerobic co-digestion process was conducted with the one to one mixture of food wastewater with livestock wastewater, and the presence and the dynamics of various pathogenic microorganisms was analyzed. The mixture contained various enteric and pathogenic bacteria, such as Escherichia coli. Enterobacteriaceae, Coliform bacteria. Staphylococcus aureus, Salmonella, Shigella, Listeria, and Yeast. Anaerobic digestion has become stabilized around 21 days after the reaction started, showing about 80% to 90% of remarkable reduction rates of microorganisms until this period in acidogenic reactor (AR) and methanogenic reactor (MR), respect ively. After stabilization, the average reduction rate of organic matter was recorded as around 60% in MR. Most microorganisms in the effluent were not detected at around the last period of the reaction, except Listeria and S. aureus, which showed the growth even at the last day of the reaction.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.16 no.10
• /
• pp.6698-6707
• /
• 2015

The purpose of this study is to investigate relationships among career identity, satisfaction in major, and adjustment to college life for students who major in food and nutrition that is complex and has diversity of carrier and to serve as a guideline for career counselling and college life. After reliability and validity of the data collected were verified using IBM SPSS Statistics 22, difference in variables according to characteristics of students was examined using independent t-test, ANOVA, and chi-square test. The results showed that there was a positive correlation among career identity, satisfaction in major, and adjustment to college life and students who had prior knowledge of their major showed a higher level of career identity, satisfaction in major and adjustment to college life compared to those who did not. Therefore, it is suggested that guidance on Department of Food and Nutrition should be provided to students before they decide on their major for their increased satisfaction in major, smooth adjustment to college life, and career decision. With this data, we recognize the gravity of psychological factor and carrer consciousness may provide base data to practical use of student life and carrer guidance.