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        검색결과 130

        81.
        2015.09 KCI 등재 SCOPUS 구독 인증기관 무료, 개인회원 유료
        Research in foreign accent has reported various factors of accentedness. However, very little attention has been given to the relationship between L2 speakers’ accentedness and their awareness of, or sensitivity to, L2 phonological system. The present study aims to explore the relationship between ESL learners’ phonological awareness, as measured by several tasks, and their accentedness, as rated by native speakers of English. Twelve advanced adult ESL speakers participated in seven tasks purported to tap into their sensitivity to English sounds and sound structures. They also read an English passage, and four native speakers rated their foreign accentedness on a 9-point scale. The learners showed individual differences in their phonological awareness despite the fact that they were from an intact class presumably at the same proficiency level. They also exhibited varying degrees of foreign accent. Correlational analyses revealed that in general there was a nonsignificant correlation between the learners’ L2 phonological awareness and their accentedness, and that the awareness did not seem to have translated into L2 production. The study addresses some methodological and procedural issues that suggest crucial points for refinement of the phonological awareness tasks and the L2 speech data collection method.
        6,300원
        87.
        2013.04 구독 인증기관·개인회원 무료
        Myanmar is located in the south-east Asia peninsular and it is flanked by five neighboring states: Bangladesh, India, China, Laos and Thailand. It is located 10~22 degree north latitude, to 92~101 degrees east longitude. Myanmar has a tropical climate with three seasons in Myanmar. Hot season (March through April), rainy season (May through October) and the cool season (November through February). The coastal regions can get very hot and humid, especially before the rainy season. Myanmar has a monsoon season from May to October when there are heavy rains and often flooding. The investigation was carried out during the dry season(2013) in Nat Ma Taung National Park and Popa Mountain Park. Popa Mountain Park is located in Kyawpadaung Township, Myinchan district, Mandaly Division. The area is 49.63 square miles. Its coordinates are 29°31'60" N and 27°43'60" E. Nat Ma Taung National Park, Myanmar treasure is in Mindut District of Chin State and its area of 279 square miles. It is the third highest mountain in Myanmar with the height of 10,500 feet. Its coordinates are 21°14'00" N and 93°54'00" E. As the result, butterflies(Lepidoptera) collected in the two regions were about 60 species of 7 familys. Collecting dates, expedition activities, photo of main specimen and information of Myanmar were provided.
        88.
        2013.04 구독 인증기관·개인회원 무료
        Myanmar is located in the Southeastern region of Asia. It lies between latitudes 9° and 29°N, and longitudes 92° and 102°E. The bordering countries are China on the northern side, Thailand and Laos on the eastern region, Bangladesh on the western side and India on the northwestern region. Myanmar has a total area of 678,500 square kilometers (262,000 sq mi). The rainy season exists primarily during the months between June and September. Whiledry season stays during the months between December and April. Northern regions of the country are the coolest, with average temperatures of 21 ℃ (70 ℉). Coastal and delta regions have an average temperature of 32 ℃ (86.9 ℉). This expedition was conducted four times for three years. Among them we explored three area including Popa Mountain, Alaungdaw Kathapa National Park and Nat Ma Taung National Park[Popa Mountain(8.7~8.17, 2011; 7.24~8.3 2012; 2.18~2.28 2013), Alaungdaw Kathapa National Park(2.2~2.9, 2012) and Nat Ma Taung National Park(2.18~2.28 2013)]. Collecting methods was sweeping net, lignt trap, burket trap, pitfall trap with other method, and collected especially mainly Coleoptera and Lepidoptera. As the result, totally about 30 families in Coleoptera and 7 families in Lepidoptera were collected, among them Carabidae and Nymphalidae was revealed most diversity species. Main collect specimens, expedition activities and collections data etc. were provided herein.
        89.
        2013.03 KCI 등재 구독 인증기관 무료, 개인회원 유료
        태국에의 옥수수 재배는 종자 가격의 상승, 잦은 기후변화, 때때로 부족한 종자로 인하여 종자구입을 주저하고 있는 실정인데, 종자의 자가소비 및 이웃농가 보급을 통하여 옥수수 종자구입 비용의 절감을 목적으로, 태국 농업청(Department of Agriculture, Thailand)과 한국 농촌진흥청(Rural DevelopmentAdministration, Republic of Korea)과의 협력으로 AFACI(Asian Food and Agriculture Cooperation Initiative)의 태국 국별 과제로 옥수수 종자마을 조성(Maize Seed Village) 사업을 선정하여 추진하였다. 대상 품종은 태국 자체 육성종인 건조저항성 단교잡종 나콘사완3(Nakhon Sawan 3)로 교잡종 채종기술은 나콘사완전작물연구소가 운영한 채종농가 훈련을 거쳐 이전되었으며 이를 위하여 종자채종기술 교재 600부를 제작 활용하였다. 2010 여름, 2011 우기, 2011 여름 기간, 총 3작기에 걸쳐 5개주 52개 마을 175농가 96 ha에서 종자 79,988kg을 생산하여 자가 소비 및 이웃 농가 보급에 활용하였다. 생산된 종자의 판매가격은 일반 상업화 종자 가격의 46~60%수준이었으며, 농가는 나콘사완 3 교잡 종자에 대한 채종재배기술과 품종의 성능에 크게 만족하였다.
        4,000원
        90.
        2012.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        We don't have time to waste, time is running, and the global warming is an issue that concerns to all of us. Information technology, which on a global level is responsible for 2% of emission of greenhouse gases. However, the remaining 98% is seen as an opportunity for IT to help our planet, our companies and our society. The purpose of this paper is to analyze green information technology (IT) initiatives and their strategic impact. And to have done this, we develope and create a very useful balanced-scorecard framework to explain, understand, and identify the direct and indirect contribution of green IT initiatives. The green IT evaluation framework, called here a sustainable green IT balanced scorecard, integrates the four BSC-IT perspectives with the Zuboff's automate/informate goals of information systems and the contribution of the sustainability (economic, social and environment). This study also seeks to answer the following questions: 1) what are the driving forces for implementing green IT initiatives? 2) How can an analytical framework be built to systematically analyze the benefits and strategic contribution of green IT initiatives? And 3) how green IT initiatives impact the strategic goals of a firm and how they can contribute to the triple bottom line? The framework demonstrates to be useful as a management tool to hopefully integrate environmental and social management with the general management of a company. Besides, the strategy map and measures for each cell of the framework are provided.
        4,000원
        91.
        2012.10 구독 인증기관·개인회원 무료
        The pinewood nematode, Bursaphelenchus xylophilus is a serious forest pathogen in many countries including Japan, China and Korea. To minimize the environmental problems caused by synthetic chemicals broadly utilized in the control of B. xylophilus, we estimated the nematicidal potency of 63 aliphatic compounds against B. xylophilus by measuring their inhibition activity against acetylcholinesterases (ACE, EC 3.1.1.7) of B. xylophilus (BxACEs). In the primary inhibition assay using B. xylophilus crude protein, C6, C9, C10 2E-alkenal C12 alkanoic acid were observed the > 45% BxACE inhibition rate and they were subsequently estimated the inhibition rate against three recombinant BxACEs. Whole compounds showed the high inhibition rate against BxACE-1 and BxACE-2. Interestingly, C6 2E-alkenal and C12 alkanoic acid exhibited the high inhibition rate against BxACE-3 which would be insensitive to ACE inhibitors.
        92.
        2012.05 구독 인증기관·개인회원 무료
        We evaluated insecticidal and acetylcholine esterase inhibition activity of 11 Apiaceae plant essential oils and their constituents against male and female adults of Blattella germanica. Of 11 Apiaceae plant essential oils tested, dill (Anethum graveolens), carvi (Carum carvi), and cumin (Cuminum cyminum) essential oils demonstrated > 90 % fumigant toxicity against male adults of German cockroach at 5 mg/filter paper. In contact toxicity test, dill (Anethum graveolens), carvi (Carum carvi), cumin (Cuminum cyminum), and ajowan (Trachyspermum ammi) essential oils produced strong insecticidal activity against male and female adults of German cockroach. Among test compounds, carvone, 1,8-cineole, trans-dihydrocarvone, cuminaldehyde, trans-anethole, p-cymene, and γ-terpinene demonstrated strong fumigant toxicity against male and female adults of B. germanica. In a contact toxicity test, carveol, cuminaldehyde, (S)-(+)-carvone, trans-anethole, thymol, and p-cymene showed the strong contact toxicity against B. germanica male and female adults. IC50 values of α-pinene, carvacrol, and dihydrocarvone against female acetylcholine esterase were 0.28, 0.17, and 0.78 mg/mL, respectively. The toxicity of blends of constituents identified in 4 active oils indicated that carvone, cuminaldehyde, and thymol were major contributors to the fumigant or contact toxicity of the artificial blend.
        93.
        2012.05 구독 인증기관·개인회원 무료
        The larvicidal activity of 12 Apiaceae essential oils and their constituents was evaluated against third instar larvae of mosquitoes, Aedes albopictus. Of the 12 Apiaceae essential oils, Dill (Anethum graveolens), Caraway seed (Carum carvi), Cumin (Cuminum cyminum), Carrot seed (Daucus carota), Parsley (Petroselinum sativum) and Ajowan (Trachyspermum ammi) oils at 0.1 mg/ml exhibited 90% larval mortality after 2 days. Analysis by gas chromatography-mass spectrometry led to identification of 8, 3, 13, 12 compounds, respectively. in the oils of Dill (Anethum graveolens), Caraway seed (Carum carvi), Cumin (Cuminum cyminum), Ajowan (Trachyspermum ammi). The compounds thus identified were tested individually for their larvicidal activities against Aedes albopictus. At this same concentration, the individual constituents tested, α-phellandrene, α-Terpinene, ρ -cymene, (+)-Limonene, γ-Terpinene, Thymol, Carvacrol resulted in 100% mortality after 2 days. At this same concentration, the individual constituents tested, (+)-carvone, cuminaldehyde, neral, trans-anethole resulted in 80% mortality after 2 days.
        94.
        2012.05 구독 인증기관·개인회원 무료
        We evaluated insecticidal activity of 11 Apiaceae plant essential oils and their constituents against rice weevil, Sitophilus oryzae.. Of 11 Apiaceae plant essential oils tested, dill (Anethum graveolens), carvi (Carum carvi), caraway seed (Carum carvi) and cumin (Cuminum cyminum) essential oils demonstrated strong fumigant toxicity against adults of rice weevil. Components of 4 active compounds were analyzed by GC and GC-MS, and fumigant toxicity of individual compound was also tested. Among test compounds, carvone, dihydrocarvone, carveol, linalool oxide, neral, cuminaldehyde, and anethole demonstrated the strong insecticidal activity. The toxicity of blends of constituents identified in 4 active oils indicated that carvone, and cuminaldehyde were major contributors to the fumigant toxicity of the artificial blend.
        95.
        2011.10 구독 인증기관·개인회원 무료
        The aim of this study was to evaluate the changes of protein patterns in granulosa cells and corpus luteum during the estrus cycle in bovine ovary by proteomics ^techniques. Our study was devided into five steps for follicular, ovulatory, early-lteal, midluteal and late-luteal. The protein was extracted from glanulosa cell and corpus luteum proteins by using M-PER Mammalian Protein Extraction Reagent. Proteins were refined by clean-up kit and quantified by Bradford method until total protein was 700 μg. Immobilized pH gradient (IPG) strip was used 18 cm and 3 11 NL. SDS-PAGE was used 10% acrylamide gel. The protein spots were visualized by Coomassie Brilliant Blue (CBB) staining, analyzed by MALDI mass spectrometry and searched on NCIBlnr. As the result, 61 spots of total 85 spots were repeated on follicular stage and 51 spots of total 114 spots were repeated on ovulatory stage. 40 spots of total 129 were repeated on early-luteal and 49 spots of total 104 spots were repeated on mid-luteal stage. Also 41 spots of total 60 spots were repeated on last-luteal stage. There were differences in the ovulation (follicular∼ovultory stage) in which the spots of follicular stage 19 was only and in ovulation stage was 10 spots. The difference between the luteinization (ovultory∼mid-luteal stage) was the spots counted in each stage. The spots of ovulatory stage was 1, early-luteal stage was 1 and in mid-luteal stage was 2. Eleven spots were found in mid-luteal stage and 2 spots were found in last-luteal stage. In conclusion, we confirmed that there were 7 spots in ovulation, 4 spots in luteinization and 2 spots in luteolysis. Spot No. 89-93 from ovulation were transferrin, and spot No.94 and 95 were HSP60. Spot No. 103 were Dusty PK, spot No. 135 were OGDC-E2, and spot No. 175, 176 were Rab GDI beta from luteinization. Spot No. 178 and 179 from luteolysis were vimentin.
        96.
        2009.06 구독 인증기관 무료, 개인회원 유료
        The spatial and temporal distributions of phosphorus and nitrogen and a number of physical, chemical and biological parameters were analyzed to in the Youngsan and the Sumjin River systems, Korea. Substantial amount of P and N was observed in both the rivers all the year round. Mean N/P ratios showed large variations among the sampling sites; highest ratio was observed in most sampling sites during summer. Relative proportions of DOP: TP were fairly constant (0.08~0.09) in both the rivers. In the composition of nitrogen almost all sampling sites of both the rivers were dominated with NO3-N followed by NH3-N and NO2-N. Variations in dissolved nutrients tended to co-vary with particulate forms (PON and POP), implying that dissolved nutrients are primarily released from the decomposition of particulate forms or dissolved forms are in equilibrium with particulate forms. Chlorophyll a levels in the Sumjin River appear to be negatively correlated with the ammonia, implying ammonia is absorbed by algae with preference. While chlorophyll a was positively correlated with TP and DIP in the Sumjin River, negative correlations of these parameters was observed in the Youngsan River. The pattern of nutrients level was found to be related with land use and domestic sewage in the study area. Inter-parameter relationships may be strongly influenced by geographical factors relative to temporal factors.
        4,900원
        97.
        2008.05 구독 인증기관·개인회원 무료
        Commercial plant essential oils from 27 plant species were tested for their nematicidal activities against the pinewood nematode, Bursaphelenchus xylophilus. Good nematicidal activity against B. xylophilus was achieved with essential oils of coriander (Coriandrum sativum), styrax (Liquidamber orientalis) and valerina (Valeriana wallichi). Analysis by gas chromatography-mass spectrometry led to identification of 26, 10 and 4 major compounds from coriander (Coriandrum sativum), styrax (Liquidamber orientalis) and valerina (Valeriana wallichi) oils, respectively. These compounds from three plant essential oils were tested individually for their nematicidal activities against the pine wood nematode. Among compounds, benzaldehyde, trans-cinnamyl alcohol, cis-asarone, octanal, nonanal, decanal, trans-2-decenal, undecanal, dodecanal, decanol, and trans-2-decen-1-ol showed strong nematicidal activity. The essential oils and their described herein merit further study as potential nematicides against the pine wood nematode.
        99.
        2006.06 KCI 등재 구독 인증기관 무료, 개인회원 유료
        To reveal effects of gamma-irradiation with various doses on the expressions of C4H and F5H genes, the transcription levels of OsC4HL and OsF5HL were investigated in leaves and stems of two rice cultivars, Ilpoombyeo and IR-29, after the irradiation with
        4,000원
        100.
        2006.03 KCI 등재 구독 인증기관 무료, 개인회원 유료
        우유 또는 주스 종이용기를 재활용하여 화장지를 생산하고 있는 제지회사에서 배출되는 제지폐수를 대상으로 주기적 질소 역세척이 가능한 세라믹 정밀여과 시스템을 운전하였다. 제지폐수 재활용을 위해 본 연구에서 7개의 채널이 있는 2 종류의 알루미나 분리막이 사용되었다. 질소 역세척 시간을 40초, 막간압력차 1.0kgf/cm2, 역세척 압력 5.0kgf/cm2로 고정하였을 때 0.4mum의 평균기공 크기를 갖고 있는 HC04 알루미나 분리막의 최적 여과시간 간격은 4분으로 1.0mum의 평균기공인 HV10 분리막의 16분보다 짧았다. 여과시간 간격과 역세척 시간을 고정한 상태에서 막간압력차(TMP)의 영향을 살펴본 결과, 높은 TMP 조건에서는 쉽게 막표면에 케이크가 형성되고 막 내부 구조에도 막오염이 발생하기 때문에 낮은 TMP 조건이 막오염 제어에 유리한 것을 알 수 있었다. 그러나 TMP는 폐수처리 여과 시스템에서 구동력이기 때문에, 가장 높은 TMP 조건에서 가장 많은 총여과부피를 얻을 수 있었다. 한편, 다채널 세라믹 분리막을 사용한 정밀여과시스템에서 얻은 투과수는 탁도가 낮기 때문에 제지공정에서 재활용 될 수 있다.
        4,000원
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