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인 수준이 다른 육계사료에 Crude Phytase 첨가시 생산성에 미치는 영향
이선재,엄재상,백인기,이재관 한국가금학회 2000 韓國家禽學會誌 Vol.27 No.3
An experiment was conducted to measure the effect of crude phytase supplementation on the growing performance, blood concentrations of some minerals and tibia characteristics of broiler chickens. Day-old 240 male broiler chickens (Avian) were randomly allotted to four treatments. There were six replicates per treatment, and ten chicks per replicate. Treatments consisted of two levels of crude phytase (0 and 600U/kg) made from Aspergillus ficuum and two levels of non-phytate P (0.45 and 0.35% NPP for the starter period, and 0.35 and 0.25% NPP for the grower period), making the experiment 2$\times$2 factorial. The starter period was from hatch to 21 d of age, and grower period was from 22 to 35 d of age. Feed intake and weight gain of chicks fed diet containing phytase were higher(P〈0.05) than those of chicks fed diets without phytase, however, no differences was found in feed/gain. mortality, and nutrient availabilities regarding the phytase supplementation. Chickens fed diets with low NPP and phytase excreted lower P than did birds fed diets containing normal NPP without phytase. The level of NPP and phytase did not affect N excretion. The Ca availability was increased by feeding low NPP diet. Dietary phytase increased the availabilities of P and Mg, but decreased those of Fe and Zn. There was interactions between dietary NPP level and phytase addition on mineral availability. Tibia was lighter and shorter in low NPP groups, and heavier in phytase treated groups. The tibial contents of Ca, P and Mg decreased in low NPP treated groups, but increased in phytase treated groups. The ash content of tibia of chickens fed diet with phytase was higher than that of birds fed diets without phytase. These data suggest that the crude phytase supplementation to broiler diets containing low NPP level improves growth performance and mineral availability and, reduces fecal P excretion.
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이선재,장관우 한국강구조학회 1997 韓國鋼構造學會誌 Vol.9 No.1
In Recent years, Steel has been used in a majority countries in the world as an architectural materials , especially applied an housing structural material. The purpose of the current study is to propose 1) the proper construction method of Low-Rised Steel Apartment(LRSA) and 2) the considerations of improved method of steel pre-fabricated housing in site. The study had been managed while the project was under construction, which was completed on July 30, 1996. The present study provides a fundamental base for the efficient use of LRSA systems in actual construction such as general apartment, housing. In order to obtain the proper construction method of LRSA system for sub-construction system, material development, scheduling system and pre-fabrication system should be studied concerning their architectural planning and structural planning problems. From the construct results, it was found that the LRSA system was very effective compared with the conservative method(i.e. concrete construction system), on the workability as well as quality control and structural stability. Further, We will expect some advantages such as the price in the future, if it is stable production system.
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에스닉레스토랑에서의 진정성 경험 : 문화적 관여도의 조절효과
이선재,심창섭 한국호텔외식관광경영학회 2019 호텔경영학연구 Vol.28 No.8
In the age of globalization, the number of ethnic restaurants has rapidly increased. As customers visit ethnic restaurants not only for eating food but for experiencing ethnic cultures, ethnic restaurants should be understood as cultural spaces offering authentic experiences. Therefore, this study aimed at examining the relationship among authenticity, perceived value, and behavioral intention of customers at ethnic restaurants. An onsite survey was conducted in nine ethnic restaurants. A total of 355 questionnaires were collected and analyzed by Structural Equation Model. First, the concept of authenticity composed of three dimensions including objective authenticity, constructive authenticity and existential authenticity, thus far mainly utilized in tourism studies was also valid in the ethnic restaurant customer's experience. Second, constructive authenticity and existential authenticity among the three dimensions of authenticity had a positive impact on perceived values, but objective authenticity did not have a significant impact on perceived values. Third, perceived value positively affected behavioral intention. Fourth, cultural involvement had a significant moderating effect on the impact of constructive authenticity and existential authenticity. These results provide several academic and practical implications for ethnic restaurant practitioners and researchers. 에스닉레스토랑은 특정 국가 또는 민족의 정체성을 드러내는 음식을 판매하는 레스토랑으로 해외여행의 증가와 국가 간의 교류가 활발해지면서 전 세계적으로 급격히 늘어나고 있다. 특히 그 국가또는 민족의 문화적 정체성을 경험할 수 있는 공간으로 외식소비자들의 많은 관심을 받고 있다. 따라서 본 연구에서는 문화적 공간으로서 에스닉레스토랑을 이해하기 위하여 진정성 및 문화적 관여도개념을 적용해 분석을 실시하였다. 서울에 위치한 9개의 에스닉레스토랑을 방문한 355명의 고객을대상으로 설문조사를 실시하여 이들이 경험하는 에스닉레스토랑의 진정성과 지각된 가치, 행동의도의영향관계를 구조방정식 모형을 통해 분석하고 진정성 경험과 지각된 가치의 관계에 있어 문화적 관여도가 미치는 조절효과를 분석하였다. 분석결과는 다음과 같다. 첫째, 객관적, 구성적, 실존적 진정성의 세 차원으로 구성된 진정성 개념은 에스닉레스토랑 고객의 경험을 이해하는데 있어서 에서도유효한 개념으로 확인되었다. 둘째, 진정성의 세부차원 가운데 구성적, 실존적 진정성은 지각된 가치에 유의한 영향을 미치는 반면 객관적 진정성은 유의한 영향을 미치지 않았다. 셋째, 지각된 가치는행동의도에 유의한 영향을 미쳤다. 셋째, 방문한 에스닉레스토랑과 관련된 국가 · 민족에 대한 문화적 관여도는 구성적, 실존적 진정성이 지각된 가치에 미치는 영향을 조절하는 것으로 나타난 반면 객관적 진정성의 영향에 대한 조절효과는 유의하지 않았다. 본 연구의 결과를 바탕으로 문화적 공간으로서 에스닉레스토랑을 문화적 공간으로 접근함으로서 다양한 학술적, 실무적 시사점을 도출하였다.
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