새로운 시대를 맞아 문화적 자신감과 문화적 주체성 강화가 강조되면 서, 문화와 관광의 융합을 통한 질적 성장이 주요 과제로 부상하고 있다. 이러한 흐름 속에서 중화 전통문화는 고유한 정신적 가치와 풍부한 역사· 문화 자산을 바탕으로 문화·관광 융합의 핵심 동력으로 자리매김하고 있 다. 본 연구는 ‘인문경제학’의 관점을 토대로 선행연구를 검토하고, 문화· 관광 융합 발전의 이론적 논리와 전통문화의 활성화 메커니즘을 분석하 였다. 아울러 고궁(자금성), 시안, 징더전 등 대표 사례를 중심으로 문화· 관광 융합의 성과와 한계를 실증적으로 고찰하였다. 분석 결과, 문화적 가 치 발굴의 심층성 부족, 콘텐츠 혁신의 부족, 동질화 경쟁 심화, 대외 홍 보력 약화, 전문 인력의 부족 등이 주요 제약 요인으로 확인되었다. 이에 본 연구는 중국의 사회·경제적 발전 맥락에서 전통문화가 관광 융합의 질 적 성장과 지속가능한 발전을 견인하기 위한 정책적 방향을 제시하였다. 나아가 중국식 현대화 과정에서 문화와 관광의 조화로운 발전을 위한 이 론적 근거와 실천적 시사점을 제공하고자 한다.

In this study, we performed optical simulations for two light sources: internal and external electrode light sources. Based on the optical simulation results, we created a practical design to verify the design validity and extract optimal design factors for each light source. The three key geometric variables in the design of a direct-lit flat panel light source are the distance between the two lamps, the distance between the lamps and the reflector, and the number of lamps. These variables significantly impact the optical design and determine various characteristics of the flat panel light source system. In this study, we used a 26 mm distance between the two lamps, a 4.5 mm distance between the lamps and the reflector, and a total of 20 lamps to derive optimal values for these variables. Under these conditions, we created a practical design and evaluated its performance, achieving an excellent flat panel light source with a central luminance of 6,423 nits and a luminance uniformity of less than 5%. This study demonstrates that optical simulation techniques are an effective method for designing a surface-emitting light source system for medical LCDs, demonstrating the feasibility of achieving high performance while maintaining a low cost.

Efforts to mass-produce high-quality graphene sheets are crucial for advancing its practical and industrial applications across various fields. In this study, we present an innovative electrochemical exfoliation method designed to enhance graphene quality and increase yield. Our approach combines two key techniques: expanding the tightly packed graphite interlayer used as the electrode medium and precisely controlling voltage polarity. The dual-exfoliation technique optimizes the use of anions and cations of varying sizes in the electrolyte to facilitate meticulous intercalation, allowing ions to penetrate deeply and evenly into the graphite interlayer. The newly designed dual-exfoliation technique using biased switching polarity minimizes the generation of oxygen-containing radicals, while the incorporation of expanded graphite accelerates exfoliation speed and reduces oxidation, maintaining high graphene purity. With these improvements, we produced 1–3 layer graphene sheets with minimal defects ( ID/IG ≈ 0.13) and high purity (C/O ratio ≈ 20.51), achieving a yield 3.1 times larger than previously reported methods. The graphene sheets also demonstrated excellent electrochemical properties in a three-electrode system, with an electrical conductivity of 92.6 S cm− 1, a specific capacitance of 207.4 F g− 1, and a retention of 94.8% after 5,000 charge/discharge cycles, highlighting their superior stability and performance.

Mechanical exfoliation has been a preferred method for obtaining various two-dimensional (2D) materials due to its ability to produce high-quality thin flakes. However, traditional exfoliation techniques often yield flakes of limited size and low yield. Herein, we present a systematic approach to improve mechanical exfoliation by using vacuum treatment to enhance the van der Waals forces between the substrate and the 2D material. This method comprises oxygen plasma cleaning followed by vacuum treatment, effectively removing organic adsorbates from the substrate and maximizing contact between the outermost layer of 2D material and the substrate. This vacuum-assisted exfoliation approach substantially enhances both the yield and flake size of graphene, resulting in single-layer graphene (SLG) flakes approximately eighty times larger than those achieved through conventional methods. The quality of the exfoliated SLG was assessed using Raman spectroscopy and atomic force microscopy (AFM), which confirmed that it is highly similar to that obtained from conventional exfoliation. Furthermore, the exfoliated SLG flakes were encapsulated between hexagonal boron nitride (hBN) layers and fabricated into SLG field-effect transistors (FETs). These devices exhibited high-performance characteristics, yielding a field-effect mobility (μ) of approximately 110,000 cm2∕V ⋅ s at room condition, demonstrating the effectiveness of the vacuum-assisted exfoliation method in producing high-quality, large-area graphene suitable for advanced electronic applications.

This research investigates into using a highly efficient magnetic abrasive finishing (MAF) method to refine the surface of an Inconel 625 bar intended for use as a stem in a hydrogen solenoid valve. In contrast to the previous choice of STS 316 material, Inconel 625 was selected due to its superior properties. The cylindrical surface of Inconel 625 bars underwent polishing using the super-fast MAF process, employing varying rotational speeds ranging from 1000 to 25,000 RPM and a potent magnetic field of 550 mT. The study evaluated the polishing outcomes concerning abrasive type, rotational speeds, and processing duration. The results demonstrated the achievement of an exceptionally smooth surface on the Inconel 625 bar, with the surface roughness (Ra) reduced significantly, reaching 0.03 μm under optimal conditions. These conditions included employing carbon nanotube (CNT) particles of 0.04g, PCD diamond abrasive of 1g, Fe of 9g, 0.5g of light oil, and a processing time of 16 minutes at 15,000 RPM. Furthermore, Ansys analysis confirmed the mechanical integrity of the polished Inconel 625 bar, exhibiting suitable strain, equivalent stress, and safety factors. This substantiates the feasibility of employing Inconel 625 bars in hydrogen tanks, surpassing the conventional STS 316L bars.

High-quality diamond films have attracted extensive attentions due to their excellent optical and electrical properties. However, several issues, such as random orientation, stress accumulation, and slow growth rate, severely limit its applications. In this paper, high-quality polycrystalline diamond films with highly ordered (100) orientation were prepared by microwave plasma chemical vapor deposition. The effects of growth parameters on the microstructure, quality and residual stress of diamond films were investigated. Experimental results indicate that relatively high temperature at low methane concentration will promote the formation of (100) oriented grains with a low compressive stress. Optimized growth parameters, a methane concentration of 2% along with a pressure of 250 Torr and temperature at 1050 ℃, were used to acquire high growth rate of 7.9 μm/h and narrow full width at half maximum of Raman peak of 5.5 cm− 1 revealing a high crystal quality. It demonstrates a promising method for rapid growth of high-quality polycrystalline diamond films with (100) orientation, which is vital for improving the diamond related applications at low cost.

This study aimed to investigate the effects of amino acid complex additives, such as protected vitamin C (VC) or detoxified sulfur (DS), on the growth and metabolism of Hanwoo cattle under high-temperature conditions. Accordingly, farms in Temperature-Humidity Index (THI) regions ranging from 78 to 89 for over 100 days were selected. The experimental groups were control, T1 (lysine + methionine + VC, 50 g/head/day), and T2 (lysine + methionine + DS, 50 g/head/day) with 70, 77, and 71 animals each. The range of the THI for 115 days was 78-89, and this occurred in most of the experiment days. The results showed that there was no significant difference in rectal temperature among the groups. The body weight increased to 786.4 and 809.0kg in the T1 and T2 groups, respectively, compared to the control group (p<0.05). Linoleic acid showed a high result of 2.01% in the T1 group compared to the control group (p<0.05). Unsaturated fatty acids were higher at 55.70 and 56.54% in the T1 and T2 groups, respectively, compared to the control group (p<0.05), and the omega 6/3 ratio was reduced to 20.10% (p<0.05). These findings indicate that T1 has a positive impact on growth, meat quality, and fatty acid composition compared to the control group. In conclusion, amino acid complex with VC improved the body weight of Hanwoo steers and the unsaturated fatty acids and essential amino acids of their meat; however, further research is needed to clarify this impact on carcass performance.

A new brown variety of Flammulina velutipes, referred to as ‘Asakgold,’ was bred by crossing two monokaryons isolated from the “Geumhyang2ho” and “Garlmoe” varieties. The pileus color of the new variety is light brown and its shape is hemispherical. During bottle cultivation, the period necessary for mycelial growth was 40 days, 9 days for primordia formation and 15 days for fruiting body growth. The total cultivation period was 64 days, which was similar to that of the control variety “Yeoreumhyang1ho.” The pileus of the new variety was similar and the stipe was thinner and longer than that of the control. The number of valid stipes per bottle was 495, which was 37 % higher than that of the control (362), and the yield was 214 g, 16 % higher than that of the control (185 g). The -glucan content was 28.69 %, which was observed to be 1.6 times more than that of the control.

Recently, with the increasing global demand for Ganoderma lucidum as a material for functional beverages, varieties with enhanced functionality are needed. As part of this effort, 10 strains were selected from a collection of 160 G. lucidum strains, based on their quantity and fruiting body characteristics. These included four strains collected in Korea, three in Japan, and three of unknown origin. Approximately 44% of the 1,290 hybrid strains were secured. After two rounds of bag cultivation in oak sawdust, three strains (G-20-4, G-20-5, and G-20-7) were ultimately selected for single-timbered cultivation. Among these, G-20-4 demonstrated the earliest harvesting with a large size and a bright cap. Additionally, this strain exhibited the highest levels of total glucan, β-glucan, total triterpenoid, total polyphenol, and total flavonoid content.

Dongchimi is one of the most representative types of watery kimchi in Korea. Although the scope of application of dongchimi has been expanded, research on the quality of dongchimi is insufficient compared to that of baechu kimchi. This study aimed to find the optimal manufacturing condition of high-acidity dongchimi and investigate the effects of potassium citrate (P) and sugar (S) on quality. Different dongchimi samples (Control, S, P) were prepared and stored at 15oC for 15 days. Among the various sugars, sucrose made the highest acidity of dongchimi. When potassium citrate was added as a pH buffer, the acidity was 2.2 times higher than the control group. In the PS group, where sucrose and potassium citrate were added, the acidity and organic acid content were 3-fold and 3.7-fold higher, respectively, than those in the control group. As a result of the analysis of the free sugar content, the metabolism of lactic acid bacteria was expected to be relatively more activated in the PS group. Therefore, this study could be utilized in the dongchimi manufacturing industry or as primary data for other dongchimi research.

Zinc-ion Batteries (ZIBs) are currently considered to be effective energy storage devices for wearable electronics because of their low cost and high safety. Indeed, ZIBs show high power density and safety compared with conventional lithium ion batteries (LIBs) and exhibit high energy density in comparison with supercapacitors (SCs). However, in spite of their advantages, further current collector development is needed to enhance the electrochemical performance of ZIBs. To design the optimized current collector for high performance ZIBs, a high quality graphene film is suggested here, with improved electrical conductivity by controlling the defects in the graphene film. The graphene film showed improved electrical conductivity and good electron transfer between the current collector and active material, which led to a high specific capacity of 346.3 mAh g-1 at a current density of 100 mA g-1, a high-rate performance with 116.3 mAh g-1 at a current density of 2,000 mA g-1, and good cycling stability (68.0 % after 100 cycles at a current density of 1,000 mA g-1). The improved electrochemical performance is firmly because of the defects-controlled graphene film, leading to improved electrical conductivity and thus more efficient electron transfer between the current collector and active material.

생물환경조절학회지 30권 3호에 게재된 논문의 그래프를 수정합니다.

본 연구는 장미 ‘Bubble Gum’에 대한 수확 후 LED 광 환경 과 살균제 Azoxystrobin 보존용액 처리 시 절화품질에 미치는 영향을 구명하고자 수행되었다. 광은 백색 LED와 유색 LED (red:blue=5:1)로 처리하였고, 보존용액은 수돗물(tap water, TW)과 Azoxystrobin 0.05 mL･L-1를 처리하였다. 백색 LED처 리의 절화수명은 TW, Azoxystrobin처리구 각각 9.6일, 9.7일 로 LED 광과 보존용액 처리 간의 유의차가 없었다. 유색 LED 처리의 절화수명은 TW처리구가 13.6일, Azoxystrobin처리구 가 9.8일로, 유색 LED 처리구가 대조구(백색 LED + TW)에 비해 절화수명을 4일 연장시켰다. 절화수명 종료 증상은 LED 광 조건과 관계없이 Azoxystrobin처리구는 꽃잎 위조와 청변 화 증상을 감소시켰다. 모든 처리구에서 상대생체중과 수분흡 수율은 각각 처리 후 2일, 4일까지 증가하다 감소하는 경향을 보였다. 수확 직후 대비 처리 6일 후 화색 변화율과 잎의 엽록 소 함량은 수확 직후와 모든 처리구에서 차이가 없었으며, 화 폭증가율도 처리 간 차이가 없었다. 결론적으로 백색 LED + Azoxystrobin 보존용액처리는 절화장미의 꽃잎 위조와 청변화 증상을 감소시키지만, 절화수명 연장효과가 없었으며, 적색 +청색 LED 처리는 장미의 절화수명 연장효과에 효과적이었다.

This study aims to investigate the physicochemical properties of meat analogs by using high and low moisture extrusion processes to create a plant-based analog burger patty material. The isolated soy protein blends of low- and high-meat analogs (LMMA and HMMA) were texturized using the twin-screw extruder equipped with a cooling die. The highest hardness, cohesiveness, chewiness, and cutting strength were observed in beef, but the highest stringiness was indicated in HMMA. The highest integrity index was seen in beef, while LMMA had the highest nitrogen solubility index (NSI). LMMA also had the highest water holding capacity (WHC) and water absorption capacity (WAC), whereas beef had the highest oil absorption capacity (OAC). LMMA had the highest emulsifying activity (EA) and emulsion stability (ES) in emulsifying properties. Further, the highest protein digestibility was revealed in LMMA. This study suggested that extrusion process types influence the quality of meat analog, which could be the elementary source for manufacturing the analog burger patty.

본 연구는 고등학생을 대상으로 진로·진학 사교육 참여배경, 서비스품질, 만족도에 대한 인식을 조사하고, 이러한 요 인들이 사교육비용 및 지속성에 어떠한 영향을 미치는지 알아보는 것을 목적으로 하였다. 이를 통해 진로·진학 사교육의 전망을 탐색하고, 진로·진학 사교육이 불가피하다면, 비용을 절감하면서 좀 더 효과적으로 이루어질 수 있는 방안을 모 색하였다. 이를 위해 고등학생 576명을 대상으로 설문조사를 통해 자료를 수집하였으며, SAS 9.4 프로그램을 활용하여 자료를 분석하였다. 연구결과를 종합해보면, 진로·진학 사교육은 사교육업체가 경영 성과를 높이기 위해서 적극적으로 마케팅을 하는 시 장적 논리, 입시정책의 변화에 발맞추어 진학을 준비하고 미래의 이익을 추구하는 학생들의 대응, 공교육에서 진로·진학 지도의 미흡함이 연계되어 나타나는 현상이다. 즉, 진로·진학 사교육은 기업(기업의 이익추구 마케팅), 가계(학생/학부모 의 자구책 마련), 정부(공교육의 공공재로써 평등성 가치추구)가 각 주체의 이익을 추구하는 가운데 발생되고, 이와 관련 된 여건이 단기간에 개선되기 어렵다는 점에서 지속될 가능성이 높다. 또한 진로·진학 사교육은 서비스품질 및 만족도가 보통 이상이고, 서비스품질에 대한 확신성이 낮고, 진로선택 만족도가 낮은 경우에 비용이 높아진다. 이는 진로·진학 사 교육이 품질과 만족도를 높이기 위해 노력해야 한다는 것을 시사한다. 그리고 진로·진학 사교육의 지속성은 여학생, 대 부분의 고등학교 학생, 소득이 높은 가정의 학생, 참여배경(공교육 미흡, 입시정책 대응, 사교육마케팅)이 그 수준을 높이 고 있다. 결론적으로 진로·진학 사교육은 지속될 것으로 전망되며, 그 비용을 절감하고 효과성을 높이기 위해서는 사교 육업체, 정부, 학부모의 노력이 요구된다.