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정호근,장재봉,김동욱,송성환 강원대학교 농업생명과학연구원 2023 강원 농업생명환경연구 Vol.35 No.4
The rapid change and the mature development of online retail channels provide consumers with multiple choices. With the prosperity of the online market, agricultural products and food in the online market also increased significantly, but little is known about consumers’ purchasing behavior for non-timber forest products in the online market. A nationwide survey was conducted among 1,000 individuals to determine the factors influencing five non-timber forest products (chestnut, jujube, shitake mushroom, Codonopsis lanceolata, and persimmon) online purchasing decisions. Respondents were asked to answer questions about their retail shopping behavior, including purchase frequency, main purchase channels, purchase value, and online shopping experience. Our results suggest that consumers have different purchasing patterns for each non-timber forest product. The factors influencing consumers’ online purchases were studied using a binary choice model. We also found that the factors affecting consumers’ online purchasing experience differed among non-timber forest products.
강릉 태백지역 석탄광산의 탄 및 호흡성 탄분진중 금속 농도 비교에 관한 연구
정호근,김해정,최호춘 한국산업위생학회 1991 한국산업보건학회지 Vol.1 No.1
Determination of Cu, Fe, Ni, Pb, and Zn concentrations in coal and respirable coal dust were performed by atomic absorption spectrophotometry. The coal samples of 18 coal mines in Gangneung area were collected and 25 coal mines in Taebaek area. Crushed coal samples were divided into three mesh sizes. The results were as follows : 1. Metal concentrations of coals in Gangneung area by sieve sizes(-100/+200 mesh, -200/+325 mesh, -325 mesh) were as follows : Cu ; 20, 18, 19, Fe ; 1,830, 1,765, 1,107, Pb ; 6, 8, 14, Ni ; 17, 1.7, 14, Zn ; 4, 2, 4 ㎍/g, respectively. Metal concentrations in coals in Taebaek area by sieve sizes(-100/+200 mesh, -200/ +325 mesh, -325 mesh) were as follows : Cu ; 30, 32, 26, Fe ; 1,741, 1,822, 1,773, Pb ; 8, 9, 7, Ni ; 13, 13, 13, Zn ; 8, 5, 4 ㎍/g, respectively. There were not significant differences of Cu, Fe, Ni, Pb, and Zn concentrations of coals statistically in Gangneung and Taebaek area by sieve size. 2. Metal concentrations of coals in Gangneung and Taeback area were as follows : Cu ; 19, 30, Fe ; 1,514, 1,778, Pb ; 9, 8, Ni ; 16, 13, Zn ; 3, 6 ㎍/g, respectively. Differences of copper and zinc concentrations of coal samples were significant between Gangneung and Taebaek area, but those of iron, nickel and lead concentrations were not significant. 3. Copper, iron, lead, nickel and zinc concentrations of coals and respirable coal dust were as follows : Cu ; 30, 6, Fe ; 1,779, 5,075, Pb ; 8, 7,814, Ni ; 13, 5,681, Zn ; 5, 134 ㎍/g, respectively. Differences of nickel, lead and zinc concentrations were significant between coals and respirable coal dust, but those of copper and iron concentrations were not significant.