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Won, Hyun Kyu,Jeon, Hyon Sun,Han, Hee,Lee, Seung Jung,Jung, Byung Heon Institute of Forest Science 2017 Journal of Forest Science Vol.33 No.4
This study was aimed to analyze the increased forestry incomes by combining timber production and wood processing, which is one of 6th industrialization types in Korean forestry. The selected household has been engaged in forestry for two generations and they produce timber and associated wood products in their own facility. The wood products include dimension lumber, interior wood material, cutting board, and cube chips, the household also utilize logging and sawmill residues as well as seed and seedlings as by-products. Incomes and expenses that have been incurred on individual processes of the sequential timber production and wood processing were surveyed, and we analyzed the economic outcomes of entire business. The results of this study indicate that the gross income of the household is 122.3 million Korean won and the net income is 93.6 million Korean won. The net income of the household is approximately 2.8 times higher than the average net income of whole households in the forestry of Korea in 2016, which is approximately 4.3 times higher than that of households that have been particularly engaged in timber production over the country. We found that the 6th industrialization by combining the two sequential processes creates approximately 3.2 times as much added value compared to the case relying on timber production only.
Hyun Kyu Won,Hyon Sun Jeon,Hee Han,Seung Jung Lee,Byung Heon Jung 강원대학교 산림과학연구소 2017 Journal of Forest Science Vol.33 No.4
This study was aimed to analyze the increased forestry incomes by combining timber production and wood processing, which is one of 6th industrialization types in Korean forestry. The selected household has been engaged in forestry for two generations and they produce timber and associated wood products in their own facility. The wood products include dimension lumber, interior wood material, cutting board, and cube chips, the household also utilize logging and sawmill residues as well as seed and seedlings as by-products. Incomes and expenses that have been incurred on individual processes of the sequential timber production and wood processing were surveyed, and we analyzed the economic outcomes of entire business. The results of this study indicate that the gross income of the household is 122.3 million Korean won and the net income is 93.6 million Korean won. The net income of the household is approximately 2.8 times higher than the average net income of whole households in the forestry of Korea in 2016, which is approximately 4.3 times higher than that of households that have been particularly engaged in timber production over the country. We found that the 6th industrialization by combining the two sequential processes creates approximately 3.2 times as much added value compared to the case relying on timber production only.
Isolation and Phylogeny of HERV-W pol Fragments in Human monochromosomes
Jeon,Seung Heui,Yi,Joo Mi,Shin,Kyung Mi,Lee,Ji Won,Hong,Kyung Won,Huh,Jae Won,Jung,A Ram,Choi,Jin,Lee,Won Ho,Kim,Heui Soo 한국생명과학회 2001 한국생명과학회 학술발표회 Vol.33 No.-
A new human endogenous retroviral family (HERV-W) has recently been described that is related to multiple sclerosis-associated retrovirus (MSRV) sequences that have been identified in particles recovered from monocyte cultures from patients with multiple sclerosis. Using the PCR approach with human monochromosomal somatic cell hybrid DNA panel, twenty-four pol fragments of HERV-W family from chromosomes 2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 13, 14, 15, 20, 21, X, and Y were identified and analyzed. They showed a high degree of nucleotide sequence similarity (89.3-91.3%) with that of the HERV-W. Translation of the pol fragments showed no frameshift and termination codon by deletion/insertion or point mutation in some clones, HWP4-1; HWP4-2 from chromosome 4, and HWPX-1 from chromosome X. Phylogenetic analysis from the HERV-W family indicates that the pol fragments has evolved independently among chromosomes or represent integration events separately during primate evolution.
In vitro plant regeneration from axillary buds of Hibiscus syriacus L.
Jeon, Seo-Bum,Kang, Seung-Won,Kim, Wan-Soon,Lee, Gung-Pyo,Kim, Sun-Hyung,Seo, Sang-Gyu The Korean Society of Plant Biotechnology 2009 식물생명공학회지 Vol.36 No.2
Presently, we report a simple, reproducible and high frequency plant regeneration in Hibiscus syriacus L. using axillary buds. H. syriacus was regenerated from axillary buds directly or through a callus phase. Regenerated shoots were directly induced from young and fresh axillary buds cultured on Murashige and Skoog medium (MS) supplemented with 0.01 mg/L of the growth regulator thidiazuron (TDZ) after 2 weeks of culture. Directly induced shoots were transferred to hormone-free MS medium and root development was observed after 6 weeks. On the other hand, old and stale axillary buds were regenerated to shoots via callus induction on MS medium containing 0.01–2 mg/L TDZ after 4 weeks. A TDZ concentration of 0.01 mg/L was most effective in callus formation. Green callus was transferred to MS medium containing 0.01 mg/L α-naphthalene acetic acid (NAA) and 0.5 mg/L benzylaminopurine (BA). After 4 weeks, callus had developed into multiple shoots. Plantlets were formed from 10 week cultures of single shoots on hormone-free MS medium. Regenerated plantlets were cultured on MS medium for one month and then transferred to pots containing garden soil. Potted plants were acclimatized for one month and grown to maturity under greenhouse conditions. The present study has shown that various concentrations of plant growth regulator can be effective for in vitro plant regeneration of H. syriacus. The direct and indirect regeneration protocol presented here will be useful for understanding the manipulation and propagation of H. syriacus.
Seung Mun Jeon,Gun Hee Jang,Won Seo Lee IEEE 2014 IEEE transactions on magnetics Vol.50 No.11
<P>We propose a novel double helical magnetic micromachine (DHMM) to achieve drug-enhanced unclogging abilities for occlusive vascular diseases (OVDs) in human blood vessels. The proposed DHMM can generate navigating and mechanical drilling motions actuated by an external rotating magnetic field (ERMF). It can also deliver a clot-busting drug to a target point (clogged area) and can precisely release the drug toward the clogged area. We derive rotational dynamic constraint equations for selective manipulation of the navigating, drug releasing, and mechanical drilling motions of the DHMM by controlling the ERMF. We then prototype the DHMM and demonstrate these motions to show the validity of the proposed DHMM and manipulation methods.</P>
Impact of intensive observations on the predictive skill of heavy rainfalls over korea
Seung-Woo Lee,Yong-Hee Lee,Ki-Hoo Kim,Eun-Hee Jeon,Chang-Geun Park,Hye Young Won,Sang-Ok Han,Kwang-Deuk Ahn,Eak-Hyun Cho,Young-Jean Choi,Hee-Sang Lee 한국기상학회 2007 한국기상학회 학술대회 논문집 Vol.2007 No.-
The assimilation with KWRF 3.3 km model using the intensive observations (KEOP-2007)showed positive potential to improve the heavy rainfall forecast skill. The cycling process to provide the background to the initial condition played an important role in spin-up of precipitation. Although the simulated rainfall amounts were much smaller than the observation, the CPS in high resolution model could contribute to improve the performance of precipitation area forecast.