• Journal of Korea Technical Association of The Pulp and Paper Industry
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• v.44 no.5
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• pp.63-71
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• 2012

This study was carried out to investigate pulping properties of the forest biomass arising from the national forest management operation. The forest biomass was collected and classified into many groups according to their species and age. After the chips were made from the forest biomass, the measurement of chip size and chemical analysis were performed. To make the pulps from the forest biomass, the kraft pulping was applied and thereafter the physical and optical properties of kraft pulps were measured. The pulp fibers from the forest biomass had the similar mean fiber length, but their properties became different according to wood species and ages. Differently from the other species, kraft pulps from chestnut wood had the highest kappa number. Acacia, paulownia and chestnut woods made kraft pulps with lower tensile strength and brightness than the others. It could be concluded that acacia, paulownia and chestnut woods must be screened out in order to make a good quality of kraft pulps while being collected during Forest Management Operation.

• Journal of Chest Surgery
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• v.29 no.7
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• pp.741-746
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• 1996

Diffuse interstitial lung disease due to a wide variety of conditions are amenable to diagnosis by means of clinical evaluation, bronchoalveolar lavage, transbronchial biopsy and lung biopsy. The recently introduced technique of thoracoscopic wedge biopsy provides the potential advantages of greater selection of biopsy site and reduced postoperative chest pain compared with the standard open lung biopsy Video assisted thoracoscopic lung biopsy was performed in twenty patients for diagnosis of diffuse in- terstitial lung disease during the period from January 1993 to June 1994. The ages of the patients ranged from 18 to 69 years(mean 48.5 years), and the patients consisted of 10 males and 10 females. In all twenty, thoracoscpic lung biopsy samples were obtained; 9 from left lower lobe, 7 from right lower lobe, 2 from right upper lobe, 1 from left upper lobe, and 1 from right middle lobe. All patients were correctly diagnosed. The two common diseases were usual in erstitial pneumonia(UIP)(8120) and mil- liary tuberculo si s(4120) . Mean duration of the chest drainage was 3.2 days. There was no complication.

• Journal of Chest Surgery
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• v.41 no.5
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• pp.671-674
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• 2008

Jejunum and fasciocutaneous and myocutaneous flaps are theoretically recommended as esophageal substitutes in reconstruction of the esophagus after several occurrences of failed reconstruction. However, other esophageal substitutes should also be considered. Secondary esophageal reconstruction was successfully performed on a 24-year-old woman who had a history of cervical, thoracic, and abdominal operations and esophageal stricture secondary to several failed reconstructions for esophageal atresia and tracheo-esophageal fistula 21 years prior. The esophageal reconstruction was done subcutaneously by end-to-side anastomosis at the left cervical area using a deformed stomach graft. The patient was discharged with the ability to consume a regular diet after the operation.

• Development and Reproduction
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• v.14 no.4
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• pp.253-259
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• 2010

DNA methylation is one of the major epigenetic regulations of gene expression. The DNA methylation patterns are dramatically changed during gametogenesis and embryogenesis, and especially, it has been known that embryonic stem cells show a distinct methylation pattern. In this study, we examined the methylation patterns of imprinting genes, H19, Igf2r, and Snrpn, in stem cells induced from fertilized embryo (fES) and somatic cell nuclear transferred embryo (ntES). The methylation pattern of H19 gene in both fES and ntES were similar. However, the methylation patterns of Igf2r and Snrpn in ntES (hypermethylated) were slightly different from fES cells.

• Economic and Environmental Geology
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• v.33 no.2
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• pp.147-163
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• 2000

The Buseok pluton in the Yeongju Batholith is a comagmatic plutonic rocks which haveconcentrically compositional zoning. The lithofacies of the Buseok pluton comprise hornblende biotite tonalite in the southern part of the pluton, porphyritic and equigranular biotite granodiorite in the northern part and biotite granite in the north-central part. The compositional variations change gradually with continuity both within and between the lithofacies. The concentrically zoned pattern is relatively mafic rocks composed of high-temperature mineral assemblages in margin of the southern part, passing inward and northward gradually to more felsic rock in core of the north-central part. Changes in the textures and microstructures, as well as in the mineral content, take place between rock types of the plutons. Darker colored, generally coarse-grained, well foliated tonalite pass inward to light colored, coarse-grained, poorly foliated granodiorite, and finally give way to lighter colored, medium-grained, nearly nonfoliated granite. The foliation are best developed in the marginal part of the tonalite. Here, the regional myolitic foliation in the tonalite is steep northward and parallels to its southeastern contact with the country rock, but the magmatic foliation from disc-shaped mafic microgranitoid enclaves is subvertical and parallels the contacts with the country rock. As the tonalite approaches biotite granite in composition, the foliation is indistinct. Modal and chemical data for the pluton show quantitative compositional variation from the margin of the southern part to the core of the north-central part. Quartz and K-feldspar increase toward the core of the pluton, whereas hornblende, biotite and color index decrease. /Abundances of $SiO_2$and $K_2O$$_2$O increase toward the core according to the variation in quartz and K-feldspar, whereas those of MnO, CaO, $TiO_2$, $Fe_2O_3$, MgO and $P_2O_5$ decrease corresponding to the variation in mafic and accessaries. The compositional zonation resulted from fractional crystallization involving downward settling of earlier crystals, accompanied by upward movement of melt and volatiles, and followed by accessary marginal accretion of crystalline material in the magma to the marginal part. Although a little crustal contamination by the wall rock is recognized from the isotope data, the contamination is not only dominated over but also appropriate for forming the compositional variation in the pluton.

• The Journal of the Korea Contents Association
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• v.17 no.3
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• pp.400-407
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• 2017

The purpose of this research was analyzing pre-post change of concept recognition structure about happiness and activity in which medical school students feel happiness, in order to develop such curriculum accordingly. Research subjects included a total of 36 sophomores attending medical school, and a day reconstruction method and network analysis were applied. According to the research finding, while medical school students were experiencing a lot of happiness while eating/talking and doing leisure activities, the frequency of feeling happiness through learning activities was shown to be low. Words that expressed happiness before and after were similar in many parts and 'economy' showed the highest degree centrality before and 'work' showed the highest degree centrality after. Because the structure of the concept about happiness was divided from 1 group into 4 groups including one's work, positive self, health of family, value about life etc., perception of the concept about happiness was changed from the concept about superficial happiness to the concept about actual happiness. Therefore, in order for prospective doctors who will treat human health to establish the concept and value about happiness properly, education about happiness is necessary and for this, curriculum related to happiness must be developed systematically.

• The Journal of the Korea Contents Association
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• v.17 no.3
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• pp.462-473
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• 2017

This study suggested appropriate media educational model for the Korean situation based on the two previous research results concerning Korean media mental model which have abstracted from elementary schoolers and parents respectively living in and around Seoul. This looked through typical media educational model being in effect in Western countries such as Buckingham's creation-centered model, Hobbs' action-centered model, Potter's analysis-centered model and Vanhoozer's worldview-centered model, synthesized all the strengths of each model, and finally modified and reorganized this new model to reflect demanders' needs. Newly developed demander-centered educational model is a kind of circulation model consisting of a chain of the steps: worldview and viewpoints, use(access), analysis and evaluation, reflection, and social act; Each step borrowed the essential contents of each domain of objectives and tried to reflect the specific situations for Korean demanders. The needs for media use etiquette against addiction and cyberbullying were applied to the step of 'worldview and viewpoint', the needs for the educational status of books as media to 'use(access)', and the reality of highly used digital media to 'social act.'

• Journal of Pharmacopuncture
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• v.6 no.2
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• pp.149-158
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• 2003

Objective : The purpose of this study was to investigate the effect of Bee Venom on the lipopolysaccharide, sodium nitroprusside and hydrogen peroxide induced expression phospholipase $A_2$ and calcium concentration in RAW 264.7 cells, a murine macrophage cell line. Method : The expression of phospholipase $A_2$ was determined by western blotting with corresponding antibodies, and the generation of intracellular calcium concentration was investigated by delta scan system in RAW 264.7 cells. Results : 1. Compared with control, expressions of lipopolysaccharide-induced phospholipase $A_2$ were decreased significantly by $1\;{\mu}g/{\mu}l$ of bee venom and decreased by 0.5, $5\;{\mu}g/{\mu}l$ of bee venom. 2. Compared with control, expressions of sodium nitroprusside-induced phospholipase $A_2$ were decreased significantly by $5\;{\mu}g/{\mu}l$ of bee venom but increased by 0.5, $5\;{\mu}g/{\mu}l$ of bee venom. 3. Compared with control, expressions of hydrogen peroxide-induced phospholipase $A_2$ were decreased significaltly by $1{\mu}g/{\mu}l$ of bee venom and decreased by $0.5\;{\mu}g/{\mu}l$ of bee venom but increased by $5\;{\mu}g/{\mu}l$ of bee venom. 4. Compared with control, lipopolysaccharide, sodium nitroprusside and hydrogen peroxide- induced intracellular calcium concentrations were decreased by 0.5, 1, $5\;{\mu}g/{\mu}l$ of bee venom and by indomethacin

• The Korean Journal of Pain
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• v.18 no.2
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• pp.187-191
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• 2005

Background: Discogenic leg pain is a major cause of health problems, often due to herniation of the intervertebral disc, and has traditionally been treated conservatively or with an open surgical discectomy. Conventional open surgery has many complications, such as nerve root injury, discitis and a relatively high mortality rate; failure of conservative treatments is also common. Recently, the $Dekompressor^{(R)}$ Percutaneous Lumbar Discectomy probe was developed. Herein, we present the early results for a percutaneous lumbar discectomy in herniated lumbar disc disease. Methods: Eleven patients, including 8 men and 3 women, with ages ranging from 22 to 78 years, were enrolled in this study. Those patients with a previous history of back surgery were not excluded from the study. All patients were postoperatively evaluated for their clinical outcomes, such as visual analogue scale (VAS) for pain after 1 and 3 months, reduction in analgesics, functional improvement and overall satisfaction. Results: The percutaneous lumbar discectomy was completed in 11 patients (17 levels), with average reductions in pre-VAS of 61.3 and 60.2% at 1 and 3 months, respectively. Also, 72.7% of patients reported functional improvement, with 81.1% expressing overall satisfaction. There were no procedural related complications. Conclusions: We concluded that a percutaneous lumbar discectomy is a safe and effective treatment modality for a herniated lumbar disc.

• Archives of design research
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• v.18 no.2 s.60
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• pp.315-324
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• 2005

This research aims to investigate evaluation framework of environmental formative works that are regulated by law in urban space, and to suggest the directions of improving the framework for better city environments. The concept of environmental formative works in urban space was identified and social situations and factors including visitors and the cognitive process of urban environments, were analyzed. This research suggests a new method based on the analysis of existing regulations and problems of environmental art or formative works. The public regulations and evaluation methods of the Korean major cities including Seoul, Daejeon, Busan and Gwangju, were examined on environmental formative works. The objective was to suggest an evaluation framework for creating human values of urban culture environment instead of focusing on the matters between the owner of the architecture and the artist of formative works. By identifying socio-cultural value of art decoration related regulations and improving the level of the public formative art evaluation scheme, this study helps addressing the administrative problems and constructing a conceptual framework of evaluation to improve urban culture environment for both human and environment.