검색결과

검색조건
좁혀보기
검색필터
결과 내 재검색

간행물

    분야

      발행연도

      -

        검색결과 222

        121.
        2017.12 구독 인증기관 무료, 개인회원 유료
        Biodiversity has globally declined because of various drivers, and the loss of biodiversity encroaches ecosystem services resulting in more serious socio-economic and environmental problems in low-income or underdeveloped countries where local livelihood is highly dependent on ecosystem services. Official Development Assistance (ODA) from developed countries may help address the negative drivers of biodiversity loss. However, little researches on ODA related to biodiversity issues in the Republic of Korea are available. This study was conducted to review the current status of ODA related with biodiversity issues provided by Korea. We used ‘Green ODA’ guided by the Korea International Cooperation Agency (KOICA) and ’Creditor Reporting System (CRS)’ code of the Organization for Economic Cooperation and Development (OECD) to identify and analyze biodiversity-related ODAs. As a result, ODAs for biodiversity provided by Korea were belonged to two of five categories of the Green ODA. The total amount of the overall ODAs and Green ODAs have increased steadily since the 2000s. However, the amount of biodiversity-related ODAs had greatly changed over time, and its proportion to overall ODA budgets had remained low. This may be largely because the ODAs for biodiversity had been implemented on a short-term basis, not for systematic long-term projects. In order to meet the global trend for biodiversity conservation, it is necessary to expand the total amount of ODAs for biodiversity, establish long-term plans, and maintain the continuity of biodiversity-related ODA projects.
        4,000원
        123.
        2017.10 KCI 등재 SCOPUS 구독 인증기관 무료, 개인회원 유료
        ZnO micro/nanocrystals with different morphologies were synthesized by thermal evaporation of various zinc source materials in an air atmosphere. Zinc acetate, zinc carbonate and zinc iodide were used as the source materials. No catalysts or substrates were used in the synthesis of the ZnO crystals. The scanning electron microscope(SEM) image showed that the morphology of ZnO crystals was strongly dependent on the source materials, which suggests that source material is one of the key factors in controlling the morphology of the obtained ZnO crystals. Tetrapods, nanogranular shaped crystals, spherical particles and crayon-shaped crystals were obtained using different source materials. The X-ray diffraction(XRD) pattern revealed that the all the ZnO crystals had hexagonal wurtzite crystalline structures. An ultraviolet emission was observed in the cathodoluminescence spectrum of the ZnO crystals prepared via thermal evaporation of Zn powder. However, a strong green emission centered at around 500 nm was observed in the cathodoluminescence spectra of the ZnO crystals prepared using zinc salts as the source materials.
        3,000원
        124.
        2017.10 KCI 등재 구독 인증기관 무료, 개인회원 유료
        베트남은 3,444 가 넘는 해안선, 수천 개의 섬 그리고 길이 4260 이상인 2,360개의 강과 수로가 있는 해양국이다. 선박 에 의한 유류수송의 빈도와 수송량이 증가하면서 기름유출사고의 가능성이 과거 어느 때보다 높아지고 있다. 해상에서의 연료유 및 화 물유의 유출은 해양생태계, 연안자원 및 인간건강은 물론 사회 경제에 대하여 광범위하고 장기적인 영향을 미친다. 본 연구는 20년 동안의 기름유출사고 건수와 유출량과 같은 베트남의 해양기름유출 현황 그리고 기름유출대응(OSR)에 대한 국가체제 등과 같은 국가 대응체계에 관한 전반을 보여줄 뿐만 아니라, 특히 베트남과 한국 사이의 국가기름유출대응체제를 비교함으로써 기름유출사고에 대응 하여 베트남의 국가역량을 강화하기 위한 권고안을 제시하고자 한다. 그 결과, 베트남의 해양기름유출사고 건수와 유출량은 한국의 하 락 추세와는 대조적으로 상승 추세를 보였다. 이는 베트남의 연안 해역에서 실제적 기름유출 가능성이 높다는 것을 의미한다. 따라서 베트남의 국가기름유출대응역량을 강화하기 위한 3가지 주요 권고안을 다음과 같이 제안한다. 즉 OPRC협약의 수락 · 이행 그리고 유류오염으로 인한 피해 및 손실을 보상하는 국가기금의 조성과 같은 기름유출사고에 대비하고 대응하기 위한 법률제도를 포함한 국 가기름유출대응 시스템을 강화하기 위한 방안의 개발; 일관된 보고, 경보 및 모니터링 시스템의 강화; 표준 교육과정 내용으로 구성된 교육 및 훈련 프로그램의 개발을 제안하고자 한다.
        4,000원
        125.
        2017.10 구독 인증기관·개인회원 무료
        Hallasan is an elliptical volcano on Jeju Island and is the highest mountain in South Korea. A survey was carriedout to investigate soil Gamasina mite composition in the Hallasan National Park during 2016-17. Soil samples were collectedvarious microhabitats from Baekrokdam and Muljangori. We found these eight species; Euparholaspulus primori, Gamasholaspisbrowningi, G. communis, Parholaspulus bregetovae, P. hiasmaticus, P. maturovae, P. orientalis and P. paradichaetes fromsoil. Among these species, Parholaspulus bregetovae, P. hiasmaticus, P. maturovae, P. orientalis and P. paradichaeteswere first records from Baekrokdam and Muljangori, Halla National Park, South Korea.
        126.
        2017.10 구독 인증기관·개인회원 무료
        Aedes albopictus is an important vector for yellow fever, dengue fever, chikungunya fever and Zika virus. This mosquitohas been exposed to organophosphates and pyrethroids in Republic of Korea for a long time. Using the direct contactmortality bioassay, susceptibility strain and two field populations of Ae. albopictus from Busan, and Damyang. Insecticidalproperty were indicated to RR ratio values (Resistant ratio to strain of susceptibility) of LC50 (Midian Lethal concentration)to organophosphats and pyrethroids. Genomic DNA was used for Allele-specific PCR (AS-PCR) genotyping of the acethylcholineesterase to detect Gly119Ser mutations and kdr gene to detect Phe1534Cys mutations. Detoxification enzyme activitiesof Ae. albopictus from Busan and Damyang were assessed using microplate enzyme activity assays. Activities of fourdetoxification enzymes eg., glutathione S-transferase(GST), Non specific esterases (α-naphthyl acetate and β-naphthyl acetate),and cytochrome C oxidase were determined for each Ae. albopictus strain. This study might suggest that Ae. albopictuscontrol programs should be prepared for the management of organophosphate and pyrethroid insecticide resistance.
        127.
        2017.10 구독 인증기관·개인회원 무료
        The intracellular endosymbiont bacterium Wolbachia is currently known to be the most common in arthropods. It mayleads to male-killing, cytoplasmic incompatibility, parthenogenesis and feminization of genetic males with large impacton host ecology and evolution in mosquitoes. Mosquitoes was collected in four areas with various ecological conditionsusing black light traps and Wolbachia detection from the collected mosquitoes was carried out by PCR using WSP andFtsZ genes primers. A total of 385 individual mosquitoes were screened. 213 mosquitoes (55.3%) belonging to four specieswere positive for Wolbachia infections. Aedes albopictus showed the highest infection rate (100%). Wolbachia infectionand type were firstly reported in Aedes in Korea.
        128.
        2017.10 구독 인증기관·개인회원 무료
        The activities of three class, five acaricides (Permethrin, Deltamethrin, Fenitrothion, Chlorpyrifos, Imidacloprid) againstHaemaphysalis longicornis nymph, a major vector for Severe Fever with Thrombo cytopenia Syndrome (SFTS) and Lymedisease. The ticks distribute at vast open fields and various kind of habitats. Five acaricides were applied to ticks collectedform four areas(Gapyeong, Paju, Chuncheon, Wonju) to confirm the effect of acaricide. This areas was the area whereSFTS disease occurred and a large nember of ticks were collected. As a result, All areas is the most acaricidal effectto Deltamethrin. And two areas(Gapyeong, Paju) has the lowest acaricidal effect to Imidacloprid and two area(Chuncheon,Wonju) has the lowest acaricidal effect to Permethrin. Futher study will need to compare the acaricidal efficacy of theremaining seven province.
        129.
        2017.10 구독 인증기관·개인회원 무료
        A climate change has been reported as the most important issue related with vector borne diseases eg. Zika and Denguemainly transmitted by Aedes mosquitoes. In 2016, 24 imported Zika virus disease cases and > 300 cases of Dengue feverwere reported in the Republic of Korea (ROK). In the ROK, the control of disease vectors has been mainly carried outusing chemicals, which resulted in high insecticide resistance. Many studies and projects in Korea Center for DiseaseControl & Preventionfor overcoming the insecticide resistance of disease vectors have been carried out and some nationaldisease vector management systems for effective vector control are established throughout the ROK. In this presentation,the national vector management systems and studies will be addressed.Key words : Disease vectors, National management, the Republic of Korea, climate change
        130.
        2017.10 구독 인증기관·개인회원 무료
        Suillus granulatus is an ectomycorrhizal fungus that is associated with pine roots. S. granulatus is edible mushroom and known as the weeping bolete. S. granulatus is similar to S. luteus, but S. granulatus has a ringless stalk. We investigated in the growth characteristics of the 4 strains of S. granulatus with growth medium, temperature, and cellulase enzyme activities. NIFoS 1211 and 2701 showed the highest growth on PDA and NIFoS 1997 produced abundant mycelia on MMN. NIFoS 2615 was grown well on SDA. In spite of same species, the optimal media were different according to habitat of fruit body. The optimal temperature for mycelial growth of all strains was 25oC and NIFoS 2615 was also grown well at 30oC. All of strains on MMN liquid medium were typically grown at pH ranges from 5.8 to 6.2. The dry weights of S. granulatus strains were measured according to different inorganic nitrogen sources. All strains showed the highest dry weight on MMN and showed little difference on none contained nitrogen source, ammonium and nitrate media. We measured cellulase activity on carboxymethylcellulose (CMC) agar plates, and determined clear zone according to pHs. The 4 strains of S. granulatus showed the positive reactions in cellulase activity. All strains formed the height clear zone at pH 6.
        131.
        2017.10 구독 인증기관·개인회원 무료
        For centuries, Lentinula edodes called “Pyogo” in Korea has been cultivated as a high-grade edible mushroom in Asia. This is known as medicinal mushroom for cold prevention in oriental medicine. In the world market, this mushroom of Lentinula edodes is introduced as representative edible and medicinal mushroom in Asia. As consumer interest increases, Asian Lentinula edodes market is also growing. There is a record that Korea has already been used as a gourmet food on the royal meal table for the king in the 15th century Joseon Dynasty. In Korea's famous oriental book, it is cooked with many traditional foods because of the pharmaceutical efficacy of this mushroom. For long time ago, difference in cultivation as well as in mushroom growth of Lentinula edodes has studied in Korea. Recent advances in cultivation of selected high quality mushroom studied from substrate optimization using log and sawdust of oak tree. Cultivation of Lentinula edodes strain research controlled the production of large quantity of various substrate conditions. This mushroom mycelia and fruit-body were cultivated in log of oak tree and sawdust substrate cultivation in types of bioreactors. According to compared cultivation method, it presented the optimistic condition for the amount production of various Lentinula edodes strain in Korea.
        132.
        2017.09 KCI 등재 구독 인증기관 무료, 개인회원 유료
        The current study identified risk factors associated with porcine circovirus type 2 (PCV2) infection on pig farms in the Republic of Korea using a multinomial logistic regression model to evaluate the PCV2 infection status of pigs at different growth stages. Compulsory disinfection of visitors (odds ratio [OR]: 0.019, 95% confidence interval [CI]: <0.001–0.378, p=0.0095), compulsory registration of visitors (OR: 0.002, 95% CI: <0.001–0.184, p=0.0070), regular blood testing (OR: 0.012, 95% CI: <0.001–0.157, p=0.0007), and running on-farm biosecurity learning programs for workers (OR: 0.156, 95% CI: 0.040–0.604, p=0.0072 and OR: 0.201, 95% CI: 0.055–0.737, p=0.0155, respectively) were identified as factors which could reduce the risk of PCV2 infection. However, visitation by a regular veterinarian (OR: 32.733, 95% CI: 3.768–284.327, p=0.0016) was associated with PCV2 infection.
        3,000원
        134.
        2017.06 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Corn is basal forage for livestock species in Republic of Korea but it lacks protein and needs nitrogenous fertilizer. This study was designed with main objective to achieve optimum growth, yield & nutritive value of forage for livestock through implementing corn-soybean intercropping strategy at 17 different places under Korean condition. Two treatments; corn as monocrop (control treatment) and corn-soybean intercrop were compared under Randomized Block Design from 28th May to 8th October, 2015. Each treatment had three replicates in each block, whereas seventeen different places were considered as blocks. Data were analyzed through SAS-9.1.3 software. Difference between two treatment means was tested through T-test. Findings depicted that intercropping pattern could not influence (P>0.05) corn plant & ear height, corn lodged stalk No. and corn stalks number. However, corn-soybean intercropping enhanced (P<0.05) forage productivity in terms of total fresh yield (16.4±0.7b vs. 19.9±0.7a tons ha-1), total dry matter yield (5.38±0.25b vs. 6.41±0.31a tons ha-1) and total digestible nutrients yield (3.94±0.17b vs. 4.59±0.21a tons ha-1). Dry matter percentage in corn stalks and corn ears was not different (P>0.05) between two treatments. It was concluded that corn-soybean intercropping strategy was promising technique in enhancing forage productivity though positive symbiotic relation between two crops.
        4,000원
        135.
        2017.06 KCI 등재 구독 인증기관 무료, 개인회원 유료
        In this study, we used a choropleth map to explore the spatial variation of the risk of cattle herds being bovine tuberculosis (BTB) positive in Gangwon-do in 2015. The map shows that the risk of being BTB-positive was lower in provinces located in the middle of Gangwon-do (Wonju, Youngwol, Peongchang, and Kangneung) than in other provinces. In addition, one province located in the north (Goseong) had a low risk of BTB. The estimate for the intercept of the spatial lag model was 0.66, and the spatial autocorrelation coefficient (lambda) was 0.20 (Table 1). The Moran’s I was 0.33 with p-value of 0.02. In 2015, provinces located in the North West (Hwacheon) and East (Donghae) of Gangwon-do had a higher BTB risk. We identified some specific provinces at low BTB-positive risk, information that may prove useful for control of BTB in the study area.
        4,000원
        136.
        2017.06 KCI 등재 구독 인증기관 무료, 개인회원 유료
        This study was aimed to find yield prediction model of Italian ryegrass using climate big data and geographic information. After that, mapping the predicted yield results using Geographic Information System (GIS) as follows; First, forage data were collected; second, the climate information, which was matched with forage data according to year and location, was gathered from the Korean Metrology Administration (KMA) as big data; third, the climate layers used for GIS were constructed; fourth, the yield prediction equation was estimated for the climate layers. Finally, the prediction model was evaluated in aspect of fitness and accuracy. As a result, the fitness of the model (R2) was between 27% to 95% in relation to cultivated locations. In Suwon (n=321), the model was; DMY = 158.63AGD –8.82AAT +169.09SGD - 8.03SAT +184.59SRD -13,352.24 (DMY: Dry Matter Yield, AGD: Autumnal Growing Days, SGD: Spring Growing Days, SAT: Spring Accumulated Temperature, SRD: Spring Rainfall Days). Furthermore, DMY was predicted as 9,790±120 (kg/ha) for the mean DMY(9,790 kg/ha). During mapping, the yield of inland areas were relatively greater than that of coastal areas except of Jeju Island, furthermore, northeastern areas, which was mountainous, had lain no cultivations due to weak cold tolerance. In this study, even though the yield prediction modeling and mapping were only performed in several particular locations limited to the data situation as a startup research in the Republic of Korea.
        4,000원
        137.
        2017.04 구독 인증기관·개인회원 무료
        The susceptibility values for field-collected (BG-BG) and laboratory (KS-BG) strains of German cockroaches, Blattella germanica (L.) to 5 synthetic pyrethroids and 3 organophosphates were assessed by topical application. Both KS-BG and BS-BG demonstrated the highest levels of susceptibility to deltamethrin. The KS-BG demonstrated the lowest susceptibility level to fenthion, while the BS-BG field population showed the lowest susceptibility to bifenthrin. The BS-BG field population showed resistance levels of 50 to 640 fold higher against the eight pesticides evaluated compared to the KS-BG. The resistance ratios (RR) of the eight pesticides were compared using populations of B. germanica that were collected from the same locality during 2007 and 2014. The field population of B. germanica collected during 2014 demonstrated significantly high resistance to an organophosphate and all pyrethroids when compared with those collected during 2007, but RR values were < 10 except for chlorpyrifos-methyl and chlorpyrifos with RR values of 74 and 104, respectively.
        138.
        2017.04 구독 인증기관·개인회원 무료
        The purpose of this monitoring is to survey the geographical distribution of tick species using dry ice bait traps and flagging methods at each ten provinces (GangwonⅠ,GangwonⅡ, Gyeonggi, Chungbuk, Chungnam, Gyeongbuk, Gyeongnam, Jeonbuk, Jeonnam and Jeju area) and one Metropolitan area in the Republic of Korea for eight months from April through November, 2016. A total of 65,339 ixodid ticks (8,200 females, 1,988 males, 31,453 nymphs and 23,698 larvae) was collected, belonging to three genera (Haemaphysalis, Ixodes and Amblyomma). Haemaphysalis longicornis was the most commonly collected species, which is represented for 96.88% of all the collected ticks and followed by H. flava (2.69%), I. nipponensis (0.35%), A. testudinarium (0.05%) and H. japonica (0.03%) in the Republic of Korea for the study period. Haemaphysalis longicornis was a dominant species observed in these eleven areas.