http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
배달음식의 이용현황과 인식 및 만족도 연구-수도권 20∼30대 1인 가구를 중심으로-
송호철,오정훈,심성진,강근옥 한국외식산업학회 2023 한국외식산업학회지 Vol.19 No.1
This study investigated usage behavior, preferred recipe, and satisfaction of delivery food on single households in their 20s∼30s. The collected data consisted of 315 sheets, and the frequency and percentage standard deviation were calculated using SPSS PASW 21.0. Chi-squared test, independent sample t-test, regression analysis were performed. The results are summarized as follows. Regarding the frequency of delivery food uses, once or twice a week was the highest (43.8%), and 77.1% people use delivery food for dinner. The most of people spent 15,000∼20,000 won for one delivery (42.2%), and main delivery foods were fast food (33.3%) and Korean food(27.6%). What was considered most important as delivery food was taste (54.3%), followed by price (26.0%), recommendation (7.3%), quantity (4.1%). The most of people used delivery apps (96.8%), and the most preferred delivery food companies are franchised delivery food restaurants (44.4%). Regarding the recognition about delivery food, taste·savor was the highest (3.36), followed by health (2.36), sanitation (3.19), diversity (4.29), usability (4.24) and reuse intention (3.99). And the overall satisfaction with delivery food was 3.62. In the multiple response for the improvements of delivery food, the most responses were lowering price (68.9%) followed by hygienic packing (32.4%). The preference for delivery food ingredients was chicken(4.19), and the preference for cooking method was highest in roasting(4.17).
영가철과 여러 가지 산화철 조합공정을 이용한 질산성질소 환원에 관한 연구
송호철,전병훈,조동완,Song, Hocheol,Jeon, Byong-Hun,Cho, Dong-Wan 한국지하수토양환경학회 2014 지하수토양환경 Vol.19 No.1
This paper presents the feasibility of using different iron oxides (microscale hematite (HT), microscale magnetite (MT), and nanoscale maghemite (NMH)) in enhancing nitrate reduction by zero-valent iron (Fe(0)) under two solution conditions (artificial acidic water and real groundwater). Addition of MT and NMH into Fe(0) system resulted in enhancement of nitrate reduction compared to Fe(0) along reaction, especially in groundwater condition, while HT had little effect on nitrate reduction in both solutions. Field emission scanning electron microscopy (FESEM) analysis showed association of MT and NMH with Fe(0) surface, presumably due to magnetic attraction. The rate enhancement effect of the minerals is presumed to arise from its role as an electron mediator that facilitated electron transport from Fe(0) to nitrate. The greater enhancement of MT and NMH in groundwater was attributed to surface charge neutralization by calcium and magnesium ions in groundwater, which in turn facilitated adsorption of nitrate on Fe(0) surface.
아가리쿠스 버섯(Agaricus blazei Murill)의 效能 및 硏究動向에 대한 考察
宋昊哲,金東熙,金聖勳 대전대학교 한의학연구소 2000 혜화의학회지 Vol.9 No.1
Basidiomycete, Agaricus blazei murill has grown Brazil naturally. It was first cultivated 1997 in Korea. Proteoglycan or polysaccharide which have the effect of immunopotency and anticancer were extracted from it. From the mycelium of cultivated mushroom, were extracted lectin, linoleic acid, FⅢ-2-b, and simmilar to glucomannan from fruit body of Basidiomycete Agaricus blazei. Fruit body was more studied than mycelium. The experiments were most in vivo study. The effect were shown on S-180, MethA tumor, Ehrlich ascites carcinoma, Shionogi carcinoma 42, Meth A fibrosarcoma by transferation of tumor cell line, specially effectiveness on the S-180. About immunopotenciation, were shown as activation of NK cell, pancreatic T-cell, helper T cell, enhancement of population of cytotoxity T cell. It was effect on the MethA tumor cells in vitro cell cytotoxity and has induction of apoptosis. Forthermore cytotoxity of many other tumor cell line, angiognensis, cell cycle studies will be needed.