• 공연문화연구
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• 제39호
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• pp.775-800
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• 2019

향제줄풍류의 초석이라 할 수 있는 정읍줄풍류는 풍류음악 형성에 있어 지방풍류문화의 사회적·공간적 특징을 가장 잘 반영하고 있다. 이에 정읍 풍류음악의 줄풍류와 대풍류의 형성과 연행의 관련 기록을 통해 두 음악 간의 연관성을 시대적 상황에 비추어 살펴보았다. 또한 정읍풍류의 사회적·공간적 특수성에 따른 두 음악의 관련성을 가늠해 보았다. 시대적인 흐름은 풍류방에 변화를 가져왔다. 향제줄풍류는 경제줄풍류와 달리 가락이 고정되어 있지 않았다. 전승계보나 지역에 따라 서로 다른 특성을 가지고 있었다. 이는 전계문과 같은 지역 전문연주가들에 의해 재해석된 가락의 특징이라 할 수 있다. 재인청에 소속되어 있던 무계출신의 전계문과 같은 전문연주자들이 향제줄풍류에 참여하면서 변화무쌍한 무속 형식이 자연스럽게 줄풍류에 이입되었을 가능성이 높다. 춤반주인 대풍류와 향제줄풍류의 밀접한 관계는 두 가지 관점에서 그 연관성을 유추할 수 있다. 첫째, 향제줄풍류의 태동에 음악적 주체로 참여한 전계문은 악기연주 뿐아니라 춤에도 능한 인물이다. 전계문을 포함한 세습무계 재인들이 주체적으로 참여하게 된 '향제줄풍류'는 춤반주 음악으로 사용되었던 대풍류 가락과 밀접한 관계를 가질 수 밖에 없었을 것이다. 이는 재인들에 의해 형성된 정읍 줄풍류의 사회적·공간적 특징이라 할 수 있다. 둘째, <초산율계 계보도>에 의하면 전계문으로부터 영산회상과 삼현육각을 배운 정형인이 향제줄풍류 피리 연주자로서 피리 계보 맨 위에 위치하고 있다. 정형인은 무계출신 춤꾼 정자선의 아들이다. 전계문과 정형인 모두 춤꾼인 동시에 전계문은 줄풍류 형성에 영향을 주었으며, 정형인은 줄풍류 수석 피리연주자로 활동하였다. 이들이 향유하던 대풍류 선율은 정읍향 제줄풍류 형성에 영향을 끼칠 수밖에 없는 구조적 특징을 가지고 있다. 이러한 내용을 토대로 정읍 줄풍류는 재인들의 대풍류와 밀접한 관계를 가지고 있음을 유추할 수 있다.

• 한국육종학회지
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• 제42권3호
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• pp.222-225
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• 2010

재래종 서리태는 밥밑용 콩으로 한국인에게 선호되고 있으나, 숙기가 느려 수량성이 떨어지고 콩알이 커서 청소년들에게는 기피 경향이 있다. 서리태의 특성을 개량하고자 1994년 수집한 서리태 종자에 감마선 250 Gy를 조사하여 돌연변이 육종을 시도하였다. 그 후대에서 숙기가 빠르고 수량성이 높으며 콩알 크기가 작아진 유망 돌연변이 계통을 선발하여 '조생서리'로 명명하고, 2005년도에 품종보호권 및 국가품종목록등 재 신청을 하였으며, 2008년도에 등록을 완료하였다. 신품종 '조생서리'의 신육형은 유한형, 꽃색은 자색, 엽형은 능형이며, 종피색은 검정색이고 모용색과 성숙기 협색 모두 갈색의 특징을 가진다. '조생서리'의 개화기는 파종 후 57일경으로 중생종이며, 재래종 서리태(67일)보다는 10일 정도 빠르다. '조생서리'의 성숙기는 파종 후 130일로 재래종 서리태의 164일 보다 34일 정도 빠르다. 100립중은 재래종 서리태가 40.1 g으로 극대립종에 해당되는데 비교하여, '조생서리'는 32.8 g으로 중대립종에 속한다. 신품종 '조생서리'의 10a 당수량은 179 kg으로 재래종 서리태 74 kg에 비교하여 2.4배 정도 높았다.

• 방사선산업학회지
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• 제4권3호
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• pp.227-231
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• 2010

The purpose of this study was to investigate the expression mechanism of MCP-1 in gamma-irradiated RAW 264.7 macrophage cells. MCP-1 plays an important role in attracting monocyte to injured site at the early inflammation stage. However the production mechanism of MCP-1 by gamma-irradiation in RAW 264.7 macrophage cells was almost undiscovered. We found that MCP-1 was produced in RAW 264.7 macrophage cells by irradiation with 5 Gy. And these inceases were attenuated by specific inhibitors treatment, such as $NF-{\kappa}B$, JNK, ERK, JAK2, and Pyk2. These results indicate that radiation-induced MCP-1 production is mediated by MyD88- and TRIF-dependent pathways in RAW 264.7 macrophage cells. Furthermore, gamma-irradiation induced heme oxygenase-1 (HO-1) expression in RAW 264.7 macrophage cells. However this induction level was reduced before MCP-1 and $IFN-{\beta}$ production.

• 방사선산업학회지
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• 제5권1호
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• pp.41-46
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• 2011

Polyacrylonitrile (PAN) fibers are the most widely used precursor of the materials for carbon fibers. The conventional process of carbon fibers from PAN precursor fiber includes two step; stabilization at low temperature and carbonization at high temperature. Compared to thermal stabilization, the stabilization process by electron beam (E-beam) irradiation is a advanced and brief method. However, a stabilization by E-beam irradiation was required a high dose (over 5,000 kGy) and spend over 1.5 hr (1.14 MeV, 1 mA). In the present work the main goal is exploring a quick stabilization process by cotrolling E-beam currents. The effect of various E-beam currents on stabilization of PAN precursor fiber was studied by gel fraction test, thermo gravimertic analysis (TGA), differential scanning calorimetry (DSC), tensile strength, and scanning electron microscopy (SEM) images.

• 방사선산업학회지
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• 제5권2호
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• pp.179-184
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• 2011

In this study, several anion exchange membranes were successfully prepared by radiation grafting of vinylbenzyl chloride (VBC) monomer onto a polyethylene-co-tetrafluoroethylene (ETFE) film and subsequent quaternarization with diamins such as 1,4-diazbicyclo[2,2,2]octane, N,N,N',N'-tetramethyl-1,3-diaminopropane, N,N,N',N'-tetramethyl-1,6-diaminohexane, and trimethylamine. The anion exchange capacities of the prepared membranes were determined by using acid-base titration method. The cross-sectional morphology of the membranes was studied by using SEM instrument. The cross-sectional distribution patterns of the grafted polymers with anion exchange functional groups were also studied by EDX analysis.

• 방사선산업학회지
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• 제5권2호
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• pp.113-118
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• 2011

Hydrogels from a mixture of poly(N-vinylpyrrolidone) (PVP), ${\kappa}$-carrageenan and microorganism fermentation celluose were prepared by $^{60}Co$ gamma-ray irradiation. PVP and ${\kappa}$-carrageenan were mixed with the different ratios. Microorganism fermentation celluose were added to the mixture of PVP and ${\kappa}$-carrageenan to evaluate the effect of microorganism fermentation celluose on the gel strength. The gel strength of the hydrogel was evaluated for application of a wound dressing. The results showed that gelation and gel strength were increased with increasing the content of the microorganism fermentation celluose.

• 방사선산업학회지
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• 제5권3호
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• pp.227-230
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• 2011

Pulps were separated from wood chips using an Electron beam irradiation (EBI) treatment without a NaOH-AQ (anthraquinone) treatment for cooking. The methods were based on a hot water treatment after EBI and two-step bleaching processes. Chemical compositions and FT-IR spectroscopy demonstrated that the content of lignin and hemicellulose in the bleached wood pulps treated with various EBI dose decreased with an increase of EBI doses. Specifically, the lignin in the bleached with pulps treated at 600 kGy of EBI dose was almost completely removed. Moreover, TGA analysis showed that a thermal stability increased with increasing the content of cellulose but the lignin decomposed slowly over the wide region.

• 방사선산업학회지
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• 제4권4호
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• pp.365-372
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• 2010

Irradiation has been recognized as a highly suitable tool to aid in the formation of hydrogel. The radiation process has various advantage, such as easy process control and the lack of necessity for initiators and crosslinker. In this study, the hydrogel containing the citrus fermentation gel for the wound healing were successfully synthesized. The strength of hydrogel was increased as a function of a increasing the concentration of citrus and the irradiation doses. In addition, this hydrogel have been evaluated by the cytotoxicity and animal experiment.

• 방사선산업학회지
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• 제5권2호
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• pp.151-157
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• 2011

Crosslinked SPEEK/PVDF membrane were prepared by EB radiation method with various contents of PVDF. The prepared membranes were subjected to a comparative study of proton exchange membranes for fuel cell appreciations. The crosslinked SPEEK/PVDF membranes were characterized by using DMA, DSC and SAXS. The DMA data indicate that the ionic modulus values and cluster $T_g$ decrease with increasing PVDF content. Thus, it was suggested that the number of clustering in the crosslinked membranes can be reduced with increasing PVDF content. The DSC results were shown that the degree of crystalline of the membrane increased with increasing PVDF content. The morphology of the crosslinkied membranes was shown that with increasing PVDF content, the number of crystalline domain of the SPEEK/PVDF membranes increased but ionic aggregation of the membranes decreased. The water uptake behavior, ionic exchange capacity (IEC) and proton conductivity were decreased with increasing PVDF content. The overall findings suggest that the crosslinked membranes offer the possibility for improving the performance of PEMFC, provided that the membranes have thermal and hydration stability.

• 방사선산업학회지
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• 제6권2호
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• pp.171-176
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• 2012

In this study, a crosslinked poly(styrene-butadiene-styrene) [SBS] block copolymers were prepared by using gamma ray irradiation method. The effects of various radiation doses on the degree of crosslinking, thermo property, and morphology of crosslinked SBS block copolymer were investigated. The degree of crosslinking of crosslinked SBS block copolymers were measured by gel-fraction and FT-IR. It was found that the degree of crosslinking of crosslinked SBS block copolymers increases with increase of the irradiation dose while the TGA result shows that the initial degradation temperature of irradiated SBS block copolymer was shifted to lower temperature with increasing irradiation dose. These results indicate that degradation reaction also occurs when SBS block copolymer is exposed to gamma ray irradiation for crosslinking reaction. The SAXS and FE-SEM results indicate that the phase separation of the styrene block and butadiene block was reduced with increasing irradiation dose.