We demonstrated the sensitivity of optically active single-walled carbon nanotubes (SWCNTs) with a diameter below 1 nm that were homogeneously dispersed in cement composites under a mechanical load. Deoxyribonucleic acid (DNA) was selected as the dispersing agent to achieve a homogeneous dispersion of SWCNTs in an aqueous solution, and the dispersion state of the SWCNTs were characterized using various optical tools. It was found that the addition of a large amount of DNA prohibited the structural evolution of calcium hydroxide and calcium silicate hydrate. Based on the in-situ Raman and X-ray diffraction studies, it was evident that hydrophilic functional groups within the DNA strongly retarded the hydration reaction. The optimum amount of DNA with respect to the cement was found to be 0.05 wt%. The strong Raman signals coming from the SWCNTs entrapped in the cement composites enabled us to understand their dispersion state within the cement as well as their interfacial interaction. The G and G’ bands of the SWCNTs sensitively varied under mechanical compression. Our results indicate that an extremely small amount of SWCNTs can be used as an optical strain sensor if they are homogeneously dispersed within cement composites.

We demonstrated an effective way of preparing melt spinnable mesophase pitches via catalytic hydrogenation of petroleum residue (fluidized catalytic cracking-decant oil) and their subsequent thermal soaking. The mesophase pitches thus obtained were analyzed in terms of their viscosity, elemental composition, solubility, molecular weight, softening point and optical texture. We found that zeolite-induced catalytic hydrogenation under high hydrogen pressure contributed to a large variation in the properties of the pitches. As the hydrogen pressure increased, the C/H ratio decreased, and the solubility in n-hexane increased. The mesophase pitch with entirely anisotropic domains of flow texture exhibited good meltspinnability. The mesophase carbon fibers obtained from the catalytically hydrogenated petroleum residue showed moderate mechanical properties.

The entomopathogneic fungal colonization has become an interesting issue in ecological pest management. Plant-orientedfungi induce plant growth promotion and act as natural control agents against insect pest. Herein this work, we evaluatedthe ability of fungal colonization on bark, branches and leaves of pine tree (Pinus densiflora) to select optimal candidatesfor controlling Japanese pine sawyer (Monochamus alternatus), which is the pine wilt disease vector in Korea. As a result,some Beauveria and Metarhizium isolates could colonize on the substrates of P. densiflora and showed pathogenicity againstM. alternatus. This result suggests that the selected entomopathogenic fungi are possibly candidates for long-term managementof M. alternatus in pine tree forest.

Japanese pine sawyer, Monochamus alternatus HOPE (Coleoptera: Cerambycidae) are considered as important pine forestinsect pests in several countries which transmits the pine wood nematode, Bursaphelenchus xylophylus. In this study, wetried to control Japanese pine sawyer using entomopathogenic fungi to prevent the spread of pine wilt disease in Korea.Several entomopathogenic fungi were exposed to the adults of Japanese pine sawyer and mycosis was observed in themembranous cuticles after 6 days. In particular, two isolates showed high virulence against the adults. The selected 2isolates were sprayed to the adults at 1×105, 1×106 and 1×107 conidia/ml. In the concentration of 1×107 conidia/ml, thesurvival rates of insects were 40% and 47%, respectively. Based on these results, the possibility of controlling the Japanesepine sawyer was confirmed.

The distribution of mosquitoes collected in Cheongju area in 2016 and 2017 were compared. The collection sites wereestablished from residential area, migratory bird sanctuary, and cattle feedlot using BL trap and BG trap. Culex pipienswere the most collected in residential area, and Aedes vexans were the most collected in migratory bird sanctuary andcattle feedlot in both years. BG trap was more collected than BL trap in residential area and migratory bird sanctuary.However, cattle feedlot was more collected in BL trap. A variety of mosquito species were collected from BG trap thanBL trap. However, the number of Anopheles sinensis collected in cattle feedlot showed significant differences betweenBL trap and BG trap. Based on the results of this study, it is considered that effective monitoring of mosquitoes mightbe done by using appropriate trap type according to the region

Chemical pesticides have been used for persimmon pest control, however the overuse caused insect resistance andenvironmental toxicity. Herein this work, we investigated the biological potential of eco-friendly organic pesticides (biologicals)and entomopathogenic fungi in controlling persimmon pests, Stathmopoda masinisaa and Riptortus pedetris. A botanicalmixture of Chinese scholar tree, goosefoot and subtripinnata extract, Bacillus thuringesis NT0423 and one isolate of Beauveriabassiana showed high insecticidal activity against the pests in laboratory conditions. The selected botanical extract andmicroorganism were combined with a chemical pesticide (buprofezin+dinotefuran WP) and were assessed their controlefficacy in persimmon fields. Compared to the three times of chemical spray, the combination of more than one timeof chemical spray and the selected biologicals controlled the persimmon pests with an acceptable levels. Consequentlyone time of biological spray can be integrated to the spray program where only chemicals are strongly considered.

The hard tick, Haemaphysalis longicornis (Ixodida: Ixodidae) is one of the vectors of severe fever with thrombocytopeniasyndrome virus (SFTSV) causing in humans, however little consideration was given to the biological control of the pest.We evaluated three bioassay methods, such as spray, dipping and dropping. As a result, the dipping method was themost efficient way to measure the fungal virulence. Finally, we constructed a Haemaphysalis longicornis pathogenic fungallibrary to further facilitate the resources to be used as potential biological control agents. A conidial suspension of 1×107conidia/ml was exposed to the ticks by dipping. We confirmed that some isolates were highly virulent to the ticks. Thisresults indicated that some fungi could be used to effectively control the Haemaphysalis longicornis.

Many entomopathogenic fungal isolates received interests for controlling insect pests. But very few numbers of isolatesreached agricultural fields as commercial products. In this study, we investigated the feasibility of grain substrates forconidial production, focusing on conidial productivity and thermotolerance. Next to efficiently use the produced conidiafor spray application, conidia need to be separated from the grain substrates. Isaria javanica and I. fumosorosea conidiawere solid-cultured on ten kinds of cereal grains. Solid-cultured grains were packed in a screen bag and immersed inwater with a variety of surfactants at 100 ppm, such as Silwet, CO-2.5, CO-12, LE-7, PE-61, TDE-3, Tween 20 or Tween80. High levels of conidial release were observed on LE-7, TDE-3 and Tween80 treatments. This work suggests thatthe screen bag can be used to separated conidia from the cultured grains with the help of surfactants.

Fumigation activity of Frankliniella occidentalis, western flower thrips, and phytotoxicity were evaluated with phosphine(PH3) and ethyl formate (EF) in the asparagus. Fumigation activity of PH3 and EF showed in the order of egg (64.7 mg·h/Land 132.9 mg·h/L), nymph (5.5 mg·h/L and 14.8 mg·h/L), and adult (3.8 mg·h/L and 14.7 mg·h/L) respectively at 5˚C in12 L desiccator. The adsorption of PH3 was 24% at 5˚C. However, the adsorption of EF increased sharply to 98% at 5˚C.PH3 showed 100% control for all development stage of F. occidentalis with 4g/m3 in 0.65m3 at 2˚C for 48h exposure. Thephytotoxicity was not found. The results revealed that the EF is highly absorbable in asparagus, so it is not suitable as afumigant, but PH3 is considered to be suitable as an alternative MB fumigant for control of the F. occidentalis in asparagus.

A genus of entomopathogenic Beaveria bassiana has been widely used in pest management, however little studies havebeen given to its virulence-related genes. To identify the roles of virulence genes, AtMT-induced random mutants weregenerated and followed by localization study with TAIL-PCR. Two genes, Complex I intermediated-associated protein30 (CIP30) and Autophagy protein 22 (Atg22), were predicted as virulence-related genes in B.bassiana JEF-007. To validatethe a possible relationship between two genes and fungal virulence, hpRNAi was performed. A hpRNAi plasmid wasconstructed as a model system to knock down of egfp gene in egfp-expressing B. bassiana transformant. A Real-TimePCR showed the knock down of egfp gene expression via hpRNAi. The CIP30 and Atg22 genes in B. bassiana willbe validated by the established RNAi technique. This work can be a strong platform for the functional genetics in B.bassiana.

Although Agaricus bisporus mushroom is a popular mushroom consumed world-widely, the application of common bio-elements to verify its geographical origin remains highly limited. Therefore, this study aimed to verify whether the six cultivation regions in Korea of A. bisporus could be determined by the stable isotope composition analysis of bio-elements, which are unique and abundant in most living creatures. δ13C, δ15N, δ18O, and δ34S in A. bisporus were influenced by the region, cultivar, and the interactions between these two factors (P < 0.05). In particular, the effect of cultivation region was more significant to the isotope ratio profiles as compared to the mushroom cultivar effect. During the cultivation period of A. bisporus, the C, N, O, and S isotopic fractionation was observed between the mushroom and cultivation medium, note higher in the mushroom (P < 0.05). Two dimensional plot of δ15N, δ18O, or δ34S effectively distinguished the cultivation regions, Nonsan, Buyeo, Boryung, Daegu, and/or Gyeongju examined in this study. Further, these isotope ratio profiles measured in this study would be statistically analyzed with various chemometrics to provide isotope markers for the authenticity of geographical origin. Our preliminary case study improves our understanding of how the isotope composition of A. bisporus varies with respect to cultivation regions and cultivars. In conclusion, the analysis of stable isotope ratios is a suitable potential tool for discrimination between the cultivation origins of A. bisporus collected from Korea, with potential application to other countries after certain validation steps required.

목 적 : 충청남도 지역에서 근무하는 안경사를 대상으로 보수교육 실태현황을 조사, 분석하여 보수교육의 질 향상에 필요한 기초자료로 제공하고자 하였다. 방법 : 2017년도 충청남도 지부 보수교육에 참여한 403명 중 353명이 설문조사에 응답하였다. 응답 내용이 불성실한 설문지를 제외한 330개를 분석 대상으로 하였다. 결 과 : 남자 273명, 여자 57명을 대상으로 하였으며, 평균연령은 43세이었다. 안경원 개설자는 189명, 종사자는 141명이었다. 현재 재직 중인 안경원에서 근무를 지속할 의지가 있는 사람이 210명으로 가장 많았 다. 보수교육 경험 차이는 성별, 나이, 고용 형태, 결혼, 근무 경력, 소득에서 유의하게 나타났다. 안경사들 은 대한안경사협회로부터 보수교육에 관한 정보를 받고 많이 받고 있으며, 법적 제재를 피하기 위해 보수교 육에 참여하는 경우가 많았다. 보수교육으로 최신 기술 및 제품 정보가 가장 많이 필요하다고 응답하였다. 결 론 : 체계적인 보수교육 관리를 통해 장기 미이수자가 발생하는 것을 방지할 수 있으며, 안보건 의료 전문 인력을 확보할 수 있다. 추후 보수교육 이수자의 만족도와 요구도를 지속적으로 추적하는 연구가 필요 하며, 보수교육 프로그램을 개선 및 개발하려는 노력이 필요할 것으로 사료된다.

This study was designed to optimize ethanol extraction process of unfertilized corn silk (UCS) to maximize phytochemical contents and bioactivities. The response surface methodology (RSM) with central composite design (CCD) was employed to obtain the optimal extraction conditions. The influence of ethanol concentration, extraction temperature and extraction time on total polyphenol contents, total flavonoid contents, maysin contents, 2,2-diphenyl-1- picrylhydrazyl(DPPH) radical scavenging activities and tyrosinase inhibition were analyzed. For all dependable variables, the most significant factor was ethanol concentration followed by extraction temperature and extraction time. The following optimum conditions were determined by simultaneous optimization of several responses with the Derringer’s desirability function using the numerical optimization function of the Design-Expert program: ethanol concentration 80.45%, extraction temperature 53.49°C, and extraction time 4.95 h. Under these conditions, the predicted values of total polyphenol contents, total flavonoid contents, maysin contents, DPPH radical scavenging activity and tyrosinase inhibition were 2758.74 μg GAE/g dried sample, 1520.81 μg QUE/g dried sample, 810.26 mg/100g dried sample, 56.86% and 43.49%, respectively, and the overall desirability (D) was 0.74.

목적 : 본 연구는 안경사의 감정노동 수준을 파악하여 감정노동에 대한 대책마련을 위한 기초자료를 제공 하고자 한다. 방법 : 인천지역 안경사가 응답한 80부의 설문지를 분석하였다. 감정노동의 측정도구는 Morris와 Feldman이 개발하고 김민주가 번역한 것을 안경사에 맞게 수정하였다. 결과 : 안경사의 감정노동 수준은 평균 3.24±0.55점이었다. 이는 같은 보건직종인 간호사(3.37±0.56) 및 치과위생사(3.28±0.56)와 비슷한 수준이었다. 그러나 생활지도원(2.72±0.55)과 버스기사(3.03±0.78) 보다 상대적으로 높았으며 콜센터직원(3.42±0.62)과 호텔종사자(3.60±0.99)보다 상대적으로 낮았다. 감정 노동의 하위항목인 감정표현의 빈도, 감정표현 규범의 주의성, 감정의 부조화 점수는 각각 3.64±0.63점, 3.11±0.59점, 2.98±0.70점이었다. 대상자의 주 당 평균 근로시간은 65.6±9.6시간이었고, 일일 근로시간 이 10시간 이하 및 10시간 초과인 경우 각각 2.94±0.42점과 3.34±0.55점이었다(p=0.005). 또한 주간 근 무일수가 5일 이하(2.99±0.54)와 5일 초과(3.31±0.53) 사이에는 유의한 차이가 있었다(p=0.032). 결론 : 안경사의 감정노동은 하루 근무시간이 10시간 이상일 때 더 높은 수준으로 나타났다. 따라서 감정 노동에 영향을 끼치는 요인을 찾아 근로환경을 개선하고 감정노동을 줄이기 위한 추가적인 연구가 필요하다.

A 2-year-old, spayed male Bengal cat was referred to our clinic due to a mass lesion on the upper lip, as well as lower lip swelling and redness. Furthermore, well-circumscribed, raised, pink lesions were found in the oral cavity. Complete blood counts (CBC) and serum biochemistry profiles revealed no remarkable findings. Bacterial and fungal cultures of the lesion in the oral cavity were negative. Fine needle aspiration of the lesions revealed numerous eosinophils. Based on both clinical examination and cytological evaluation, the cat was diagnosed with feline eosinophilic granuloma. As an initial treatment, oral prednisolone (PDS) with cyclosporine was administered. However, the cyclosporine caused the cat to vomit. The lesion was markedly improved after 2 weeks of PDS-only therapy; this was subsequently tapered for 2 months and discontinued. However, one month later, the lesion had relapsed. The cat was then treated for one month using tacrolimus with PDS, and the clinical signs of eosinophilic granuloma gradually improved. The tacrolimus was gradually tapered for 1 month, and the PDS was gradually tapered for 4 months. There is no standard protocol for the investigation and treatment of feline eosinophilic granuloma. The cat in this report was administered immunosuppressive therapies to treat eosinophilic granuloma. This case report provides evidence the combination of PDS and tacrolimus is effective for reducing relapse in feline eosinophilic granuloma.

We investigate the solar cycle variation of microwave and extreme ultraviolet (EUV) intensity in latitude to compare microwave polar brightening (MPB) with the EUV polar coronal hole (CH). For this study, we used the full-sun images observed in 17 GHz of the Nobeyama Radioheliograph from 1992 July to 2016 November and in two EUV channels of the Atmospheric Imaging Assembly (AIA) 193 A° and 171 A° on the Solar Dynamics Observatory (SDO) from 2011 January to 2016 November. As a result, we found that the polar intensity in EUV is anti-correlated with the polar intensity in microwave. Since the depression of EUV intensity in the pole is mostly owing to the CH appearance and continuation there, the anti-correlation in the intensity implies the intimate association between the polar CH and the MPB. Considering the report of Gopalswamy et al. (1999) that the enhanced microwave brightness in the CH is seen above the enhanced photospheric magnetic field, we suggest that the pole area during the solar minimum has a stronger magnetic field than the quiet sun level and such a strong field in the pole results in the formation of the polar CH. The emission mechanism of the MPB and the physical link with the polar CH are not still fully understood. It is necessary to investigate the MPB using high resolution microwave imaging data, which can be obtained by the high performance large-array radio observatories such as the ALMA project.

This study was aimed to evaluate the dose-response the effects of nano-encapsulated conjugated linoleic acids(CLAs) on in vitro ruminal fermentation profiles. A fistulated Holstein cow was used as a donor of rumen fluid. Nano-encapsulated CLAs(LF, 5% of nano-encapsulated CLA-FFA; HF, 10% of nano-encapsulated CLA-FFA; LT, 5% of nano-encapsulated CLA-TG; HT, 10% of nano-encapsulated CLA-TG) were added to the in vitro ruminal fermentation experiment. In the in vitro ruminal incubation test, the total gas production on incubation with nano-encapsulated CLAs was increased significantly according to the incubation time, compared with the control(p<0.05). The tVFA concentrations on addition of LF and HT were significantly higher than that of the control(p<0.05). Thus, nano-encapsulated CLAs might improve the ruminal fermentation characteristics without adverse effects on the incubation process. In addition, the population of Butyrivibrio fibrisolvens which is closely related to ruminal biohydrogenation was increased by adding HT, while decreased by adding LF at 12 h incubation. These results showed that nano-encapsulated CLA-FFA could be applied to enhance CLA levels in ruminants by maintaining the stability of CLA without causing adverse effects on ruminal fermentation profiles considering the optimal dosage.

ABSTRACT The growth of the social platform has led to a rapid increase in sustainable value cocreation activities with customers in order to know what a customer wants. In this study, we have studied about co-creation experience in social platform service. Previous prior studies have systematically classify co-creation between customer and enterprise as co-product and value-in-use, Conceptual factors. The co-creation and value-in-use factors theoretically derived from previous researches attempt to investigate the relationship between value co-creation experience and online service quality. We also tried to investigate the relationship between value co-creation experience and online service quality, customer equity, and online word of mouth. To do this, social platform services are divided into open sns and closed sns. Open SNS was targeted to Facebook, Twitter, and Pintrest users. Closed sns were targeted to Instagram, Cyworld, Band, and KakaoTalk users. In this study, it was confirmed that the relationship between online service quality, customer equity, and online word of mouth is significant through value co - creation experience. In the future, companies that design social platforms will be asked to do what they should do to co-create with customers, and provide suggestions for how to operate the platform in order to continuously activate value co-creative experiences.