• 한국결정성장학회:학술대회논문집
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• 한국결정성장학회 1996년도 The 9th KACG Technical Annual Meeting and the 3rd Korea-Japan EMGS (Electronic Materials Growth Symposium)
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• pp.537-537
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• 1996

• 한국결정성장학회:학술대회논문집
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• 한국결정성장학회 1998년도 PROCEEDINGS OF THE 15TH KACG TECHNICAL MEETING-PACIFIC RIM 3 SATELLITE SYMPOSIUM SESSION 4, HOTEL HYUNDAI, KYONGJU, SEPTEMBER 20-23, 1998
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• pp.53-53
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• 1998

Four valence of Chromium ion doped Yttrium Aluminum Garnet crystals were grown by Floating Zone and Czochralski methods. Changes of valence for Chromium (3+) ion to Chromium (4+) were achieved by substitution of Yttrium ion in dodecahedral site to Calcium and by substitution of Aluminum in octahedral site to Magnesium. Growth conditions for high quality of crystals were investigated. Grown crystals were cut and polished and then observed various types of defects. Characterizations by means of measurement of density and lattice parameter as a function of solidification fraction were performed. Results of Q-switching test using grown crystals were also reported.

• 한국결정성장학회:학술대회논문집
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• 한국결정성장학회 1998년도 PROCEEDINGS OF THE 15TH KACG TECHNICAL MEETING-PACIFIC RIM 3 SATELLITE SYMPOSIUM SESSION 4, HOTEL HYUNDAI, KYONGJU, SEPTEMBER 20-23, 1998
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• pp.71-71
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• 1998

Transition metal ions, such as Sc, V, Cr and Fe, doped rutile crystals were grown by Floating Zone method. Growth conditions for high quality of crystals depending on the concentration of doped ions were investigated. Grown crystals were cut and polished to thin wafers, and then various types of defects such as homogeneities, low angle grain boundaries, scattering centers, and oxygen vacancies were analyzed. The effects of transition metal ions on defect formation are discussed. Results and discussions on absorption and fluorescence spectra and electrical properties of grown crystals were also reported.

• Asian Journal of Business Environment
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• 제14권2호
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• pp.19-30
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• 2024

Purpose: This research article investigates the intricate relationship between economic growth and employment in the Korean agri-food industry. Research design, data and methodology: Drawing on Okun's law, which proposes a negative correlation between economic growth and unemployment, the study explores the applicability of this law to different sectors. By focusing on the agri-food industry, the study examines the impact of economic growth on both full-time and temporary employment. Results: The findings highlight the industry's role as a buffer, absorbing workers from other sectors, particularly manufacturing. Moreover, the study reveals that temporary employment is more sensitive to economic growth fluctuations compared to full-time employment. Conclusions: The research emphasizes the importance of implementing employment programs that support transitioning workers in the agri-food industry, facilitating knowledge and skill transfer to ensure sustained employment. Furthermore, it recommends government and company support for temporary employment during buffering periods to ensure safe job transitions. This study provides valuable evidence to understand the nuanced relationship between economic growth and employment in the Korean agri-food industry.

• Mycobiology
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• 제51권5호
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• pp.354-359
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• 2023

Tricholoma matsutake has been the most valuable ectomycorrhizal fungi in Asia because of its unique flavor and taste. However, due to the difficulty of artificial cultivation, the cultivation of T. matsutake has relied on natural growth in forests. To cultivate the T. matsutake artificially, microorganisms in fairy rings were introduced. In this study, we isolated 30 fungal species of microfungi from the soil of fairy rings. Among them, one single fungal strain showed a promoting effect on the growth of T. matsutake. The growth effect was confirmed by measuring the growth area of T. matsutake and enzyme activities including a-amylase, cellulase, and b-glucosidase. In comparison with control, microfungal metabolite increased the growth area of T. matsutake by 213% and the enzyme activity of T. matsutake by 110-200%. The isolated fungal strain was identified as Penicillium citreonigrum by BLAST on the NCBI database. The Discovery of this microfungal strain is expected to contribute to artificial cultivation of T. matsutake.

• 한국해양생명과학회지
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• 제4권1호
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• pp.22-28
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• 2019

The bacterial diversity of an Antarctic hard coral, Errina fissurata, was examined by isolating bacterial colonies from crushed coral tissue and by sequencing their 16S rRNA gene. From the analyzed results, the bacteria were classified as Actinobacteria (56%), Firmicutes (35%) and Proteobacteria (9%). The thirty-four isolates were cultured in liquid media at different temperatures and their growth was assessed over time. The majority of the isolates displayed their highest growth rate at 25℃ during the first three days of cultivation, even though the coral was from a cold environment. Nevertheless, strains showing their highest growth rate at low temperatures (15℃ and 4℃) were also found. This study reports the composition of an Antarctic hard coral-associated culturable bacterial community and their growth behavior at different temperatures.

• 환경생물
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• 제23권1호
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• pp.64-70
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• 2005

벼의 유묘 생육과 광합성 효율에 대한 저선량 방사선과 생장조절물질 간의 상승작용 효과를 확인하기 위해 4년 된 종자로 기내실험과 온실실험을 수행하였다. 기내실험에서 관찰한 종자 발아의 경우 방사선을 조사한 IBA 0.001 ppm 처리구에서 가장 높은 값을 보였다. 또한, 파종 6일 후 측정한 유묘 생육은 방사선 무 조사구보다 방사선을 조사한 GA₃와 IBA 처리구에서 대체로 높은 값을 보였으며, 그 중 IBA 0.001 ppm 처리에서 저선량 방사선과 생장조절물질간의 유의성 있는 상승작용 효과를 확인 할 수 있었다. 저선량 방사선을 조사 한 후 IBA 0.001 ppm을 처리하여 관찰한 온실 실험에서도 유묘 생육에서의 상승작용 효과를 확인할 수 있었다. 광합성 효율을 확인하기 위해 측정한 엽록소 형광은 생장조절물질에 의해서만 차이를 보여, IBA 처리에 의해 광계 2의 양자 수율을 나타내주는 Ф/sub PSⅡ/와 광화학적 소멸을 나타내는 qP는 증가하였고 비광화학적 소멸을 나타내는 형광지표인 qN은 감소하였다. 이러한 결과를 통해 저선량 방사선을 조사한 후 생장조절물질을 처리하였을 때 벼의 종자 발아와 더불어 생육이 두 요인간의 상승작용 효과로 촉진됨을 확인할 수 있었다.

• 한국IT서비스학회지
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• 제11권3호
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• pp.177-190
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• 2012

The purpose of this research is to find a better win-win growth strategy of Large and mid-sized IT service enterprises. Efficient win-win growth for large and mid-sized enterprises is essential for acquiring a solid global competitiveness in IT service industry. However, previous studies lack generalized and detailed findings, and therefore past strategies were based on fragmented analysis. To develop an efficient win-win growth for Large and mid-sized enterprises, global benchmarking and an in-depth analysis on deep-rooted problems in IT service industry has been conducted. Past and present policies on IT service industry have been reviewed based on desirable co-growth structure. Based on research, current policies are unable to support co-growth, and collaborative efforts between Large and mid-sized enterprises as well as square deals are necessary for win-win growth. A new policy paradigm has been derived and a roadmap for efficient co-growth strategy has been suggested. The results of this research can be used for building a better IT service industry polices. In future studies, a longitudinal analysis on the proposed co-growth strategy can be conducted.

• 한국패류학회지
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• 제21권1호
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• pp.65-70
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• 2005

The purpose of this study is to determine the appropriate substrate for larval settlement and spat growth in the purple clam, Saxidomus purpuratus in laboratory culture. Larvae were reared with 3 different types of sediments (mud, sand, and mixed) for 46 days in settlement experiment, and settled spats were further grown in 3 types of sediments for 36 weeks in growth experiment. The density of settled spats in muddy sediments was more than 2 times higher than those in mixed or sandy sediments. But, the average size of settled spats in muddy sediments was smaller than those in mixed or sandy sediments. After 36 weeks of growth period, growth rate decreased as shell length increased. When shell length was less than 2 mm, growth rate in mixed sediments was significantly higher than that in sandy sediments. When shell length was more than 2 mm, there was no significant difference in growth rate among different substrates. Sediment type affected growth rate only when the spats were relatively small (less than 2 mm). Muddy sediments seems better for larval settlement, while mixed sediments is best for spat growth. We suggest the laboratory procedure for enhancing seedling production of S. purpuratus.

• Preventive Nutrition and Food Science
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• 제6권3호
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• pp.192-196
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• 2001

Ethanol extracts from 36 vegetable samples were assayed for their growth-promoting effects on Bifidobacterium bifidum, B. longum, and Lactobacillus casei The growth-promoting effects varied according to bacterial strain and vegetable species. In modified Gy rgy broth, extracts of Lactuca sativa, Lycopersicon esculentum and L escutentum var. cerasiforme exhibited strong growth-promoting responses toward B. longum, and significant and strong growth- promoting response toward B. bifidum was observed in extracts of Actinidia arguta, Allium cepa, A. sativum, Brassica campestris subsp. napus vats. pekinensis, Capsicum frutescens, Daucus carota var. sativa, L sativa, 1. esculentum and L. esculentum var. cerasforme, Nelumbo nucifera, Cucurbita moschata, Lackca sativa var. capitata, and Rubus coreanus. For L casei, extracts of A. fshlosum, A. hberosum, Cichorium intbus, Cucurbita moschat\ulcorner Ipomoea batatas, 1. sativa var. capitata, L. esculentum, P. brachycarpa, Raphanus sativus, R. coreanus, and S. melongena strongly enhanced the growth of this bacteria. In modified Gy rgy broth, the promoting effect was most pronounced with B. bifidum and L. casei among lactic acid bacteria used. In MRS broth, A. arguta, A. cepa, A. sativum, B. campestris subsp. napus var. pekinensis, C. frutescens, and D. carota var. sativa L. satiw var. capitata, and R. coreanus strongly enhanced the growth of B. bifidum, Growth of B. longum was strongly affected by the addition of extracts from L. sativa var. capitata. For L casei, moderate growth-promoting responses were observed in 9 vegetable extracts. The promoting effect in MRS broth was most pronounced with B. bifidum among lactic acid bacteria used.