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농산물 브랜드이미지가 브랜드신뢰 및 충성도에 미치는 영향 : 천안 '하늘그린'을 중심으로
강성필,양성범,김호,Kang, Seong-Pil,Yang, Sung-Bum,Kim, Ho 한국유기농업학회 2014 韓國有機農業學會誌 Vol.22 No.4
This study analyzed how the brand image elements influenced upon forming the brand trust and the brand loyalty of the 'Sky Green' the joint agricultural product brand Cheonan, Chungnam. The brand image was classified into functional image, symbolical image and origin - associated image. And what element of the brand image element influences upon forming the brand image loyalty by the consumers who are using 'Sky Green'. In the analysis results, the functional image, symbolical image and the image associated with the origin have influenced on forming the brand trust and the brand loyalty. All variables composing the brand image have positive influences on both brand trust and brand loyalty. It means that brand image influences on brand loyalty directly but the greater influence can be exerted through the effects of the parameter of brand trust.
이온성 액체 이온성 액체를 사용한 하이드레이트 저해제 개발
김현택 ( Hyun Taek Kim ),김은성 ( Eun Sung Kim ),김기섭 ( Ki Sub Kim ),강성필 ( Seong Pil Kang ) 한국공업화학회 2013 공업화학전망 Vol.16 No.1
유전 및 가스전 개발 시 주변 환경의 온도와 압력 조건 혹은 펌프에 의한 가압으로 관내에는 저온, 고압의 조건이 형성된다. 이러한 조건하에 가스는 물에 포집되어 가스 하이드레이트를 형성하고, 결국 파이프라인을 막거나 심지어 파이프의 누수를 일으킨다. 이를 억제하기 위해 동역학적 저해제(Kinetic hydrate inhibitor, KHI)와 열역학적 저해제(Thermodynamic hydrate inhibitor, THI)가 사용되고 있지만 각기 지니고 있는 치명적인 단점 때문에 새로운 저해제 개발이 시급한 실정이다. 현재 독특한 물성으로 많은 연구가 진행되고 있는 이온성 액체(Ionic liquid, IL)는 기존 저해제의 단점을 보완할 뿐 아니라 하이드레이트 생성 억제에 있어 KHI와 THI의 특징을 모두 지니고 있는 새로운 하이드레이트 저해제로서 각광받고 있다. 본 고에서는 이온성 액체를 사용한 하이드레이트 저해제 개발과 관련한 최근 동향을 살펴보겠다.
방사무늬김 색소변이형 엽상체의 성장과 광합성의 색소함량
김용표(Young Pyo KIM),최성제(Sung Je CHOI),강성필(Sung Pil KANG),조용희(Young hi JO),신종암(Jong Ahm SHIN) 전남대학교 수산과학연구소 1998 수산과학연구소논문집 Vol.7 No.-
Comparative studies were made on growth and photosynthetic pigment contents of the gametothallus of the wild-type (U-511), the red-type (F6-1) and the green-type (C-01) in P. yezoensis. The mean gametothallus length of the green-type was lowest in the earlier growth period and was highest in the latter growth period. The mean relative growth rate per day was highest during the earlier growth period and became lower with age of gametothallus in all the three strains, and the differences among the strains were almost negligible during the period later than 28 days old. The mean contents of chlorophyll a, phycoerythrin and phycocyanin on a gametothallus area basis were highest in the red-type mutant. In the red-type mutant, the PE/Chl. a and the PE/PC ratios were highest and the PC/Chl. a ratio was similar to as that of the wild-type.
분리기술 , 열역학 : 염화탄화수소를 포함하는 혼합가스 하이드레이트의 상평형 및 분광학적인 해석
서용원(Yong Won Seo),이흔(Huen Lee),강성필(Seong Pil Kang),이상기(Sang Gi Lee),박광호(Kwang Ho Park) 한국화학공학회 2002 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.40 No.1
In this study, The formation of solid hydrates by certain chlorinated hydrocarbons methylene chloride(CH_2Cl_2), carbon tetrachloride(CCl_4), 1,2-dichloroethane(CH_2ClCH_2Cl) and 1,1,1-trichloroethane(CH_3CCl_3) and water were attempted experimentally with nontoxic and common help gases such as CO_2, CH_4 and N_2 for recovering chlorinated hydrocarbons from the aqueous solutions. To check the themodynamic feasibility of this process the pressure and temperature ranges of hydrate stability region were carefully determined through measurement of four-phase equilibria(H-I_W-L_CHC-V) for help gas+water+chlorinated hydrocarbon systems. The help gas+water+chlorinated hydrocarbon systems greatly reduced the hydrate-forming pressure, which confirmed the mixed gas hydrates with chlorinated hydrocarbons more stabilized than the simple hydrates consisting of help gas and water. The degree of stabilization was found to follow the order of CH_2ClCH_2Cl<CH_2Cl_2<CH_3CCl_3<CCl_4. The structure of the mixed gas hydrates was identified as sII and cage occupancies of each cage were obtained through NMR spectroscopy. From close examination of phase equilibrium measurements, a thermodynamic feasibility of this process was confimed. In particular, from the spectroscopic results, both the structure and cage occupancies were determined to estimate the amount of the enclathrated help gas and chlorinated hydrocarbon molecules. From the above results we can suggest a proof-of-concept for recovering chlorinated hydrocarbons from the aqueous solution using hydrate formation in the presence of help gases.
이온성 액체를 이용한 메탄 하이드레이트 생성 촉진효과 연구
신주영 ( Ju Young Shin ),김기섭 ( Ki Sub Kim ),강성필 ( Seong Pil Kang ),문성용 ( Sung Yong Mun ) 한국화학공학회 2013 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.51 No.4
In this study, we investigated the kinetics of gas hydrate formation in the presence of ionic liquid (IL). Hydroxyethyl-methyl-morpholinium chloride (HEMM-Cl) was chosen as a material for the promotion effect test. Phase equilibrium curve for CH4 hydrate with aqueous IL solution was obtained and its induction time and consumed amount of CH4 gas were also measured. Aqueous solutions containing 20∼20,000 ppm of HEMM-Cl was prepared and studied at 70 bar and 274.15 K. To compare the measured results to those of the conventional promoter, sodium dodecyl sulfate was also tested at the same condition. Result showed that the hydrate equilibrium curve was shifted toward higher pressure and lower temperature region. In addition, the induction time on CH4 hydrate formation in the presence of IL was not shown. The amount of consumed CH4 was increased with the whole range of tested concentration of IL and the highest consumption of CH4 happened at 1,000 ppm of HEMM-Cl. HEMM-Cl induced and enhanced the CH4 hydrate formation with a small amount of addition. Obtained result is expected to be applied for the development of technologies such as gas storage and transport using gas hydrates.