선박이나 컨테이너로 수출입되는 곡류 및 박류는 검역용 훈증제인 메틸브로마이드(이하 MB)와 인화수소(이하 PH3)를 사용하는데, 처리 온도/수용비/선적방식에 따라 충분한 배기시간을 필요로 한다. 현장에서 배기시간 미설정으로 검역관 및 방제기술자에게 훈증제 TLV(Threshold Limit Value)-TWA(Time Weighted Average) 기준 이상의 농도에 노출될 위험이 있으므로, 소독 전, 후 작업자 안전을 고려하여 각 훈증제 별 작업자 안전기준에 적합한 배기시간이 설정되어야 한다. 따라서, 실내 훈증상에서 곡류(쌀, 대두) 및 박류(대두박, 주정박)를 대상으로 현행 소독처리기준으로 소독 후 탈착되는 가스농도를 측정해 MB 1 ppm, PH3 0.3 ppm 수준 이하로 감소되는 배기시간을 조사하였다. 조사결과 TLV-TWA 기준이하의 수준으로 감소되는데 필요한 배기시간은 주정박/대두박/대두에 MB가 처리된 경우는 모두 30시간, 쌀에 PH3가 처리된 경우는 30분이 소요되는 것을 확인하였다.

최근 수목 병해충을 방제, 예방하기 위해 나무주사법이 많이 사용되고 있다. 나무주사법은 기상에 상관없이 약제처리가 가능하며, 약제사용량 감소와 천적등 비표적 생물에 대한 영향을 줄일 수 있다는 장점이 있다. 하지만 현재 국내에서 나무주사법은 산림 해충을 대상으로만 등록, 적용되어 있을 뿐, 과수에 등록된 제품은 없다. 과수에 나무주사법이 적용되기 위해서는 농약잔류와 약효에 대한 연구가 필요하다. 본 연구에서는 복숭아(천중도)에 Acetamiprid 10% SL을 나무주사 후, 잔류성과 약효를 조사하여 실용가능성을 확인하였다. 약제가 나무주사된 나무는 복숭아 벚나무깍지벌레(Pseudaulacaspis prunicola)에 대하여 방제효과가 있으나, 가지별로 불균일한 약효와 잔류성을 보여 향후 수형, 흉고직경 등을 고려한 나무주사제의 처리법 최적화에 대한 연구가 지속적으로 필요할 것으로 생각된다.

Nysius Dallas, 1852, is one of the most common and widely distributed genera under the superfamily Lygaeoidae. Species under this genus are hard to identify due to similarity of the species and variability of the coloration. The Nysius species were collected with the help of aspirator and plastic vile in the perilla crop fields in RDA, Miryang, Korea. Korean species of the Nysius were identified, and three species including a newly reported species N. inconspicuus were recognized. Morphological and genetic characteristics of species were illustrated, and a key to species of Korean Nysius was provided. The DNA barcoding information of N. plebeius and N. inconspicuus were recorded.

Xyrosaris Meyrick, 1907 is a small genus of the family Yponomeutidae, established by Meyrick (1907) for its type species Xyrosaris dyropa Meyrick, 1907. A total of nine species were recognized in the world. Most of species of the genus have been described by Meyrick at the early 20th century. Up to date, X. lichneuta Meyrick, 1918 has been reported from Korea. In the present study, we review the genus Xyrosaris from Korea, with two new species: X. sp.1 and X. sp.2. Key to species, illustrations of adult, male and female genitalia, diagnosis and short description are provided.

The genus Meganola (Nolidae, Nolinae) was established by Dyar (1898), with the type species Meganola conspicua Dyar, 1898, from America (Type locality: Texas, Colorado, Arizona). This genus comprises 80 species described in the Palaearctic and Oriental region. In this study, genus Meganola Dyar is reviewed from Korea, with description of a new species. We redescribed 12 species and one new species. Illustrations of adults and genitalia of all Korean species are provided, with a key to the genus of Meganola based on the male genitalia.

본 조사는 도심 중앙부와 외곽지역에 서식하는 곤충의 종류에는 어떤 차이점이 있는지를 알아 보고자 하였다. 대전시에서 중앙부는 대전천 한남대교, 외곽지역은 갑천 원천교에서 50m 구간을 포충망을 이용하여 쓸어잡기로 3회 조사하였다. 그 결과 한남대교 지역은 3목 13과 27종이, 원천교는 4목 20과 39종이 조사되었다. 도심 중앙부는 하상도로와 자전거도로가 개설되어 있고 외곽지역은 자전거도로만 있어 상대적으로 환경의 교란상태가 적은 외곽에서 많은 곤충이 서식하고 있는 것으로 나타났다. 중앙부에서 우점종은 시골가시허리노린재와 더듬이긴노린재, 외곽지역은 운계방패멸구와 꽃매미로 나타나 두 지역의 우점종 모두는 환경이 교란된 지역에 서식하는 종들이다. 도심 중앙부에 많은 인공시설들은 곤충이 서식하기에는 부적합한 것으로 나타났다.

This paper discusses ways to understand and cope with the issues of holism, generalizability, and representativity in qualitative research. More specifically, the article argues that critical sociolinguistic ethnography can serve as a useful methodological tool to uncover complicated processes and consequences of linguistic practice in social life in an increasingly globalized world. Drawing on Heller’s (2011) framework of critical sociolinguistic ethnography, the analysis underscores how critical sociolinguistics focuses on the analysis of the processes by which social actors access and mobilize valuable linguistic resources across time and space. The paper illustrates the situated research processes of doing critical sociolinguistic ethnography through two research projects on South Korean transnational English learners conducted by the authors. The article concludes with a discussion of how critical sociolinguistic ethnography may contribute to broadening research agenda in sociolinguistics in the era of globalization.

This research aims to shed a light on the benefits and perceived risks to the willingness to use perceived by consumers, centering on design-customizing service catering to individuals’ tastes and needs, and to study their impacts on the use of a design-customizing service. The validation of how benefits and perceived risks affect the intention to use showed that only aesthetic and self-expressive benefits had significant impacts on the willingness to use. However, only time/economic loss and self-design risks had negative impacts on the willingness to use a service. By gender, there was no difference in benefits and perceived risks to willingness to use for the benefit factors, whereas in terms of perceived risks to willingness to use factors. By age, there were also differences in the effects of benefits and perceived risks to purchase on the willingness to use a rash guard customizing service. There were variations in the perceived risks to the willingness to use and benefits depending on age. In particular, it was found that there were no perceived risks to the willingness to use for the age group of 10s. As design-customizing services based on individual tastes have drawn more attention recently, this research on the benefits and perceived risks to purchasing a rash guard design customizing service, as well as their effects on service use (particularly backed up by comparative analysis by gender and age), is expected to provide insights into design-customizing service strategy development.

The mesenchymal stem cells (MSCs) that reside in dental tissues hold a great potential for future applications in regenerative dentistry. In this study, we used human dental pulp cells, isolated from the molars (DPCs), in order to establish the organoid culture. DPCs were established after growing pulp cells in an MSC expansion media (MSC-EM). DPCs were subjected to organoid growth media (OGM) in comparison with human dental pulp stem cells (DPSCs). Inside the extracellular matrix in the OGM, the DPCs and DPSCs readily formed vessel-like structures, which were not observed in the MSC-EM. Immunocytochemistry analysis and flow cytometry analysis showed the elevated expression of CD31 in the DPCs and DPSCs cultured in the OGM. These results suggest endothelial cell-prone differentiation of the DPCs and DPSCs in organoid culture condition.

목적: 본 연구는 시력교정술 후 써클 콘택트렌즈 착용 시 조도 환경에 따른 동공크기 및 시력의 차이에 대해 알아보고자 하였다. 방법: 시력교정술을 받지 않은 28안과 시력교정술을 받은 26안에 두 종류의 무도수의 써클 콘택트렌즈를 각각 착용시키고, 동공크기 및 시력을 측정하였다. 결과: 시력교정술을 받지 않은(Control group)은 써클 콘택트렌즈 착용 전 밝은 상태에서의 Log MAR시 력은 렌즈 A를 착용 하였을 때 보다 감소하였으며, 시력교정술을 받은 군에서의 써클 콘택트렌즈 착용 전 Log MAR시력은 착용 후 밝은 상태에서 렌즈 A, B를 착용하였을 때 보다 높게 나타났다. 렌즈 B를 착용 하 였을 때의 Log MAR시력이 렌즈 A를 착용 하였을 때 보다 낮게 나타났다. 밝은 상태에서 대비감도 3, 6 cpd의 공간주파수에 두 그룹간의 유의한 차이가 나타났다. 써클 콘택트렌즈 A를 착용하였을 경우 시력교정 술을 받은 군의 대비감도가 시력교정술을 받지 않은 대조군(Control Group)의 대비감도 보다 낮게 측정되 었으며, 시력교정술을 받지 않은 대조군(Control group)이 시력교정술을 받은 군 보다 밝은, 어두운 상태에 서의 대비감도가 높게 나타났다. 결론: 시력교정술을 받은 사람이 써클 콘택트렌즈 착용 시 대비감도 변화가 나타날 수 있으니 이에 대한 이해 및 착용자의 고려가 필요할 것으로 사료된다.

The aim of this study was to provide a basis for the molecular mechanism underlying the pharmacological action of ethanol. We studied the effects of 1-propanol on the location of n-(9-anthroyloxy)palmitic acid or stearic acid (n-AS) within the phospholipids of synaptosomal plasma membrane vesicles (SPMV). The SPMV were isolated from the bovine cerebral cortex and liposomes of total lipids (SPMVTL) and phospholipids (SPMVPL). 1-Propanol increased the rotational mobility of inner hydrocarbons, while decreasing the mobility of membrane interface, in native and model membranes. The degree of rotational mobility varied with the number of carbon atoms at positions 16, 12, 9, 6 and 2 in the aliphatic chain of phospholipids in the neuronal and model membranes. The sensitivity of increasing or decreasing rotational mobility of hydrocarbon interior or surface by 1-propanol varied with the neuronal and model membranes in the following order: SPMV, SPMVPL and SPMVTL.