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        검색결과 9,514

        7761.
        2014.12 KCI 등재 서비스 종료(열람 제한)
        Hyphessobrycon eques is a famous fish for ornamental fish market and aquarium. They are inhabit in regions of Amazon and Paraguay River basin. Serpae fishs were investigated 2–3 males are chased to female, and then males attempted to simulate the females abdomen. After fertilization, eggs were kept in incubators at 28oC. The fertilized eggs had adhesive and demesal characteristics and had a mean diameter of 0.92 ± 0.01 mm. Larvae hatched at 16 hrs post fertilization. The hatched larvae averaged 2.90 ± 0.16 mm in total length (LT). Complete yolk sac resorption and mouth opening occurred on the third day post hatching. At 45 days post hatching, the larvae were 12.5 ± 1.60 mm LT and had reached the juvenile stage.
        7762.
        2014.12 KCI 등재 서비스 종료(열람 제한)
        The early growth response protein 1 (Egr-1) is a widely reported zinc finger protein and a well known transcription factor encoded by the Egr-1 gene, which plays key roles in many aspects of vertebrate embryogenesis and in adult vertebrates. The Egr-1 expression is important in the formation of the gill vascular system in flounders, which develops during the post-hatching phase and is essential for survival during the juvenile period. However, the complete details of Egr-1 expression during embryo development in olive flounder are not available. We assessed the expression patterns of Egr-1 during the early development of olive flounders by using reverse transcription polymerase chain reaction (RT-PCR) analysis. Microscopic observations showed that gill filament formation corresponded with the Egr-1 expression. Thus, we showed that Egr-1 plays a vital role in angiogenesis in the gill filaments during embryogenesis. Further, Egr-1 expression was found to be strong at 5 days after hatching (DAH), in the development of the gill vascular system, and this strong expression level was maintained throughout all the development stages. Our findings have important implications with respect to the biological role of Egr-1 and evolution of the first respiratory blood vessels in the gills of olive flounder. Further studies are required to elucidate the Egr-1-mediated stress response and to decipher the functional role of Egr-1 in developmental stages.
        7763.
        2014.12 KCI 등재 서비스 종료(열람 제한)
        Polycyclic aromatic hydrocarbons (PAHs), which are ubiquitous in the air, are present as volatile and particulate pollutants that result from incomplete combustion. Most PAHs have toxic, mutagenic, and/or carcinogenic properties. Among PAHs, benzo[a]pyrene (B[a]P) and dimethylbenz[a]anthracene (DMBA) are suspected endocrine disruptors. The testis is an important target for PAHs, yet effects on steroidogenesis in Leydig cells are yet to be ascertained. Particularly, disruption of testosterone production by these chemicals can result in serious defects in male reproduction. Exposure to B[a]P reduced serum and intratesticular fluid testosterone levels in rats. Of note, the testosterone level reductions were accompanied by decreased steroidogenic acute regulatory protein (StAR) and 3β-hydroxysteroid dehydrogenase isomerase (3b-HSD) expression in Leydig cells. B[a]P exposure can decrease epididymal sperm quality, possibly by disturbing the testosterone level. StAR may be a key steroidogenic protein that is targeted by B[a]P or other PAHs. Key words : Polycyclic aromatic hydrocarbons, Endocrine disruptor, Steroidogenesis, Leydig cells
        7764.
        2014.12 KCI 등재 서비스 종료(열람 제한)
        Vagueness is poison to metaphoric clarity. It frustrates interpreters' effort to decode the coiner's intended message. What causes such vagueness? Quite possibly, it is due to the arbitrary nature that a metaphor has; two disparate entities of focus and frame spin off vagueness throughout the whole metaphoric structure. Most probably, frameshift is an antidote to rid metaphors of thick vagueness. In that sense, extralinguistic information is a good building block for a frameshift. However, extralinguistic information does not always trigger a frameshift, nor does it bring vagueness to bright light. Then, the ball is handed over to the arbitrariness because it is the axis to which all other inexplicable metaphoric phenomena converge.
        7765.
        2014.12 서비스 종료(열람 제한)
        Lactic acid bacteria were cultivated from the gut of insects and analyzed. The gut samples were obtained from Anoplocnemis dallasi, Apis mellifera, Diestrammena coreana, Gonolabis marginalis, and Mycalesis gotama. 16S rRNA gene sequence analysis revealed that the culture-dependent lactic acid bacteria isolated from the insect gut samples belonged to the genera Enterococcus, Lactobacillus, Lactococcus, Leuconostoc, and Weissella. The genera Enterococcus and Lactococcus were dominant, constituting 57% and 25% of the isolated strains, respectively. The distribution of lactic acid bacteria was found to differ according to the insect species. However, because culture-dependent methods identify only a portion of lactic acid bacterial communities, the use of culture-independent methods in future studies will be required to complement the methods used in the present study.
        7766.
        2014.12 KCI 등재 서비스 종료(열람 제한)
        There have been many linguists who studied Korean two-full-verb constructions. Some of them found an apparently meaningful similarity between these constructions in Korean and other serializing languages with respect to tense sharing and argument sharing and proposed serial verb constructions (SVC) in Korean. However, there are several phenomena which cannot be accounted for within the SVC framework, and one of the important properties of the SVC―the unaccusative second verb which takes the object of V1 as its subject―does not exist in Korean. In this paper we analyze the so-called SVCs into compound verb constructions (CVC) and covert coordination constructions (CCC) which already exist in Korean syntax. We also propose adequate structures for them without introducing a new structure to an already existing system. Based on this structural analysis, we not only explain the problems that the previous analysis could not solve but also provide further evidence for our non-serializing approach.
        7767.
        2014.12 KCI 등재 서비스 종료(열람 제한)
        Antioxidant activity is important for reducing oxidative stress that causes various metabolic disorders. Metabolic disorders are highly related to loss of productivity in livestock. Therefore, development of effective antioxidant compounds originating from plants is important for organic agriculture. Phenolic compounds in edible plants are regarded as major components relevant to antioxidant activity. The present study investigated the changes in antioxidant activity and phenolic compound profiles of Aronia (Aronia meloncarpa) by fermentation using different strains of Leuconostoc mesenteroides. A total of 5 strains of L. mesenteroides were used as starter cultures and their β-glucosidase activities were measured. A total of 6 experiment runs were prepared, one for control (uninoculated) and the others (inoculated) for treatments. For biological activity, antioxidant and antibacterial activities were measured. For phenolic compound profiling, TLC and HPLC analysis were performed. The strains of KACC12313 and KACC12315 showed greater enzyme activity than others. Treatment with KCCM35046 showed strong and broad antibacterial activity against to Listeria monocytogenes. Treatments with KCCM35046 and KACC12315 showed the highest total polyphenol content. The highest antioxidant activity was found in KACC12315 treatment. No remarkable alteration was found in thin layer chromatography (TLC) analysis. In phenolic compound profiling analysis, KCCM35046 showed notable alteration in compound area ratio compared to others and also showed the highest caffeic acid content. In chlorogenic acid, treatments with KCCM35046 and KACC12315 showed great content than others. Treatment with KACC12315 showed the greatest content of trans-ferulic acid. As a result of relative performance indexing analysis, L. mesenteroides KCCM35046 and KACC12315 were selected as the best strain for the fermentation of Aronia.
        7768.
        2014.12 KCI 등재 서비스 종료(열람 제한)
        본 연구에서는 입자 침전법으로 제작된 HgO와 PbO 기반 영상 센서의 유방촬영 영역에서의 적용 가능성을 조사하였다. 이를 위하여, 다양한 두께에 따른 HgO와 PbO 필름의 물리적 특성과 x선에 대한 양자 효율을 측정하였으며, 몬테카를로 시뮬레이션 결과와 비교 평가하였다. 또한, 입자 침강법을 이용하여 인듐 주석 산화물로 코팅 된 투명 유리기판 위에 대면적 다결정 박막을 제작하였다. 본 연구에서는 단결정의 효율과 비슷한 양자 효율을 얻기 위하여 필름의 두께와 제작 조건을 변화시켜 최적화 하였다. 본 연구의 결과를 기반으로 차후 대면적 a-Si:H 패널에 적합한 대면적 필름의 제작 기술과 최적화 연구가 가능할 것으로 판단된다.
        7769.
        2014.12 서비스 종료(열람 제한)
        Globally, as well as domestically, patients without risk factors for spontaneous spinal epidural hematoma (SSEH) have rarely been reported. SSEH often results from trauma, epidural catheter insertion for anesthesia and invasive spinal procedures. It could also occur in patients with risk factors such as hypertension, coagulopathy, pregnancy, and vascular anomaly. We encountered a case of a 51-year-old female without prior medical history or any risk factors. Magnetic resonance imaging (MRI) showed subacute SSEH at lumbar spine regions. The patient was treated successfully by surgical decompression. Therefore, we report this case with a review of the relevant literature.
        7770.
        2014.12 서비스 종료(열람 제한)
        Treatment of spontaneous retroperitoneal hemorrhage (SRH) is mainly conservative. However, if intra-abdominal hypertension (IAH) or abdominal compartment syndrome (ACS) develops, the treatment strategy should be more aggressive. Surgical decompression has been the gold standard; however, it is very invasive and highly morbid. Thus, percutaneous catheter drainage (PCD) has been introduced as an alternative therapeutic option. We report on a case of successful PCD for prevention of progression of IAH to ACS in a patient with SRH after coronary stent implantation. This case showed that PCD can be an efficacious and safe method for treatment of IAH with impending ACS.
        7771.
        2014.12 서비스 종료(열람 제한)
        Recently there are increasing numbers of people participating in sports activities. Accordingly, the rate of sports injuries is increasing as well. In this light, this study was conducted to investigate the extent of acute damage and its forms by examining the current state of patients with sports injuries. This research study was conducted between January of 2008 and December of 2010 in Chosun University Hospital through retrospective review of the medical records of patients with sportsrelated injuries. The total number of patients with sports injuries who visited the emergency center was 887. The number of male patients was 726 (81.85%), far more than the number of female patients (18.15%). More than half of the patients, accounting for 419 (47.23%), had injuries on their face; second and common parts, in which injuries occurred, were upper and lower body, accounting for 146 (16.45%) and 193 (21.75%), respectively. The majority of patients did not undergo surgical treatment. Only 113 (12.73%) patients underwent surgical treatment. In addition, more than 80% of them were not hospitalized but 170 of them needed to be hospitalized. Most sports injuries occurred in young male patients. This can interrupt participation in sports activities for a long time and result in lower quality of life. Hence proper preventative measures and scientific treatment methods are needed.
        7772.
        2014.12 KCI 등재 서비스 종료(열람 제한)
        초고령화된 한국 농촌에서 다양한 교육 및 직업 배경을 가진 중장년층 귀농인구의 유입은 고령화 문제에 대한 대안의 하나로 부각되고 있다. 본 연구는 농가 고령화에 대한 귀농인구의 잠재적인 기여도 측면에서 귀농인구의 지역별 유입 유출 패턴을 분석하였다. 분석에는 로그선형모형과 총합레퍼런스코딩을 사용하였고, 분석자료는 통계청의 2013년 귀농 통계이다. 분석결과에 의하면, 귀농인의 절반 정도가 수도권에서 비수도권 지역으로 이주한 인구이고, 이들을 제외하면 귀농인의 대부분은 원 거주지가 있던 도 내에서 이동하고 있다. 귀농인의 귀농 전 대비 귀농 후 지역 내 오즈비(odds ratio)는 지역별로 차이가 있으며, 귀농인의 성별과 연령에 따라서도 지역별 유입 유출패턴이 다르다. 이는 귀농인 유입의 긍정적 효과를 높이기 위해서는 지자체별 차이를 반영한 특화된 정책이 필요하다는 것을 의미한다.
        7773.
        2014.12 서비스 종료(열람 제한)
        This study aimed to evaluate the role of D-dimer in terminal cancer patients. Among 343 incurable cancer patients, only 4 patients (2.8%) had normal D-dimer levels, and the majority (n=115, 81.0%) had levels >2.0 μg/mL. The survival time was significantly differed according to D-dimer levels with a median of 48 days when D-dimer levels were <2 μg/mL and 19 days when D-dimer levels were higher. D-dimer levels were negatively correlated with survival according to Spearman’s rank correlation analysis (coefficient -0.335, p<0.001). In terminal cancer patients, D-dimer concentrations did exhibit prog-nostic significance.
        7774.
        2014.10 KCI 등재 서비스 종료(열람 제한)
        Water quality of the Koejong-reservoir was estimated by using the ecological model to evaluate the effects of industrial sewage discharge. State variables consist of POC, DOC, phytoplankton, DIP, DIN, DO and COD. Initial conditions for the compartment are applied to the model based on the observed results. The reproducibility was found to be satisfactory with the relative error ranging between the calculated value and the observed value. Water quality simulation was conducted by applying additional industrial sewage discharge into the Koejong-reservoir. The concentrations of COD, Chl.a, DIP and COD showed fluctuations of a narrow range. The increment percentages of Chl.a, COD and DIP were 26.6%, 20.2% and 18.2%, respectively. In the case of DO, the concentration decreased 4.8%.
        7775.
        2014.10 KCI 등재 서비스 종료(열람 제한)
        Purpose ‒ This study aims to analyze changes in attitudes towards women's political leadership and the social factors related to such changes. The study reviews the field of women's political leadership, specifically the political and economic participation of women in the world, and the impact of variables such as the changes in attitude on such participation. Research design, data, and methodology ‒ The population for this study comprises 99 countries that are members of the United Nations and have participated in the third and fifth waves of the World Values S urveys. The sample consists of 31 such countries selected for sampling. Results ‒ This study is a secondary analysis to examine the hypotheses regression and the LISREL model are used. The findings of the study indicate that the correlation between two variables, namely women's political participation and leadership of women, is statistically significant. Conclusions ‒ The changing rate of women's economic participation is also significant. The significance of these coefficients indicates that the results, with a 95% confidence level, can be extended to all member states.