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        검색결과 310

        81.
        2017.10 구독 인증기관 무료, 개인회원 유료
        Four chemical treatments with hydrogen peroxide (H2O2), copper sulfate (CuSO4), potassium permanganate (KMnO4) and chlorine (Cl2) were applied to the effluent pond water of a hybrid striped bass saltwater recirculating aquaculture system to compare their oxidation power. Four chemicals were applied at concentrations of 0 (control), 1, 5, 10 and 20 mg/l. An additional concentration of 40 mg/l was included in the chlorine treatment. Water samples from four hybrid striped bass ponds were tested with KMnO4 and Cl2. H2O2 did not reduce any of BOD, COD and chlorophyll-a, and copper sulfate was only effective on chlorophyll-a for the effluent pond. Removal efficiencies for chlorophyll-a by copper sulfate were 19.2%, 37.5%, 54.2% and 74.1% dose-dependently. Potassium permanganate effectively removed the BOD, COD and chlorophyll-a. The COD removal rates in four fish ponds varied from 15.9% to 31.6% at the concentration of 10 mg/l. Interestingly, Cl2 did not reduce the BOD and COD at all, but the BOD and COD instead increased drastically with increasing the Cl2 concentration. The pond water with the highest initial BOD and COD values among the fish ponds tested increased by 350% in the BOD and 150% in the COD at 20 mg/l. Furthermore, Cl2 did not significantly reduce any types of solid matter in this study, while KMnO4 seemed to reduce some extent volatile dissolved solid in the fish pond.
        4,000원
        82.
        2017.10 구독 인증기관·개인회원 무료
        Research on the useful mushroom was done at Aurora Memorial National Park (AMNP). The Park is situated in Central Luzon Region with a total land area of 5,676 hectares. AMNP has no distinct wet and dry season thus provides a favorable climate, which promotes the growth of useful mushrooms. The photo-documentation and collections were performed to assess diversity. Five Transect Lines (TL) were laid out in five areas, with 20m x 30m quadrat and interval of 100 meters between quadrats. The study resulted in the identification of 36 families, 53 genera, and 104 species of which 97 are basidiomycetes and 6 are ascomycetes. Simpson’s and Shannon diversity indexes resulted in 0.7254 and 1.4295, respectively. In both indexes, useful mushrooms at AMNP showed moderately diverse. While the evenness revealed 0.1565 indicating low species evenness in each TL. Among the significant findings revealed two new possible new species of Microporus and Cymatoderma.
        83.
        2017.09 KCI 등재 구독 인증기관 무료, 개인회원 유료
        This study was conducted to estimate the effect of home or hetero fermentative lactic acid bacteria(LAB) on chemical composition, fermentation quality, and aerobic stability of rye silage. Rye forage was harvested at dough stage(28.9% of dry matter), chopped to 3-5 cm length, and divided into 4 piles for different inoculations as treatment, following 1) No additives(CON); 2) Lactobacillus plantarum at rate of 1.5 x 105 cfu/g of fresh forage(LP); 3) L. buchneri at rate of 1.2 x 105 cfu/g of fresh forage(LB); and 4) Mixture of LP and LB at 1:1 ratio(MIX). Rye silage was ensiled into 20 L bucket silo in quadruplicate for 0, 1, 4, 7, and 100 day periods. After 100 days of ensiling, the silage treated with LB had lower acid detergent fiber content(p<0.05), but higher in vitro dry matter digestibility(p<0.05). The LB and MIX reduced (p<0.05) pH more rapidly than CON and LP across the ensiling days, but had no difference on 100 days. Silage treated LP had lowest(p<0.05) acetic acid, but highest(p<0.05) propionic acid. In contrast, LB treated silage had highest(p<0.05) acetic acid, but lowest(p<0.05) propionic acid with the absence of butyric acid. On microbial count, LP treated silage had lowest(p<0.05) LAB, yeast, and aerobic stability, whereas LB and MIX treated silages had highest(p<0.05). Mold was not detected across all silages. Therefore, it could be concluded that heterofermentative LAB solely or combo with homofermentative LAB might improve in vitro dry matter digestibility, fermentation characteristics, and aerobic stability of rye silage harvested at dough stage.
        4,000원
        89.
        2017.07 구독 인증기관·개인회원 무료
        Accepting that luxury stands for timeless, my contribution sets out to address and clarify the issue by analysing three questions from the semiotic perspective of luxury branding. The first is, from where does luxury speak in Bulgarian context of so-called "Bulgarian rose" product? The second is, what is the luxury branding mechanism whereby philistine's culture change? The third is, how might we conceptualise the relationship between the timeless in production of luxury discourse and transformative role of philistine's culture? To celebrate the uniqueness of Bulgarian product in luxury, it is almost as dangerous a concept as intention. It belongs to many disciplines, including psychology, sociology, and semiotics. Drawing upon the works of standpoint Greek philosophers (Plato "The Republic", 380 BCE) and semioticians (Algirdas J. Greimas, On Meaning, 1987), the discussion of implementing luxury advertising in every corner of the business world is confronted by quite serious challenges. After an introduction to the topic, the discussion will be followed by analyses of concrete examples focusing on the cultural heritage resistance. Although the inquiry is conducted from one particular standpoint — luxury branding, the observations and suggestions it makes regarding education, cultural heritage and luxury advertising campaigns will lead us to conclusions at theoretical level of interpretation on renegotiating the future direction of acquiring knowledge in the ambiguous significance of luxury.
        90.
        2017.07 구독 인증기관·개인회원 무료
        In the fashion industry, online opinion leaders (e.g. fashion blogs) that may be a source of advice for other consumers have emerged since the beginning of the century. Nowadays, among the several social networking sites (SNS) available, Instagram is also experiencing a steady increase in the amount of active users related to the fashion industry. Taking into account the relevant role of social influencers in the fashion industry (Wiedman et al., 2010) and the increasing use of Instagram by influencers and their followers, this study is thus designed to identify some of the antecedents and consequences of opinion leadership in a fashion Instagram account. First, we consider the perceived characteristics of the account (originality [H1a], uniqueness [H1b], quality [H1c] and quantity [H1d] of the contents posted) as the main antecedent factors of opinion leadership. Second, since opinion leaders are thought to have a great understanding of a specific product category (Thakur et al., 2007), we propose that opinion leadership may influence consumer behavioral intentions (Park, 2013). Specifically, opinion leadership will influence the intention to interact with the Instagram account (H2a), the intention to recommend it (H2b) and the intention to follow the advices obtained there (H2c). Finally, online interaction propensity will reinforce the influence of opinion leadership on interaction (H3a) and recommendation intentions (H3b), and the influence of opinion leadership on the intention to follow the advice will be reinforced when the contents of the account match the consumer personality and interests (i.e. personal fit) (H3c). Data to test these hypotheses was collected from an Instagram account focused on fashion in which a potential influencer posts pictures related to new trends in the fashion industry and that could be imitated by the followers of the account. Specifically, this account has more than 62.000 followers, who were invited to participate in the research. Finally, 808 participants answered a questionnaire including measurement scales adapted from previous literature, using seven-point Likert-type response formats, which respondents rated from 1 (“strongly disagree”) to 7 (“strongly agree”). Partial Least Square was used as the estimation procedure. First, we analysed data to check validity of measures in order to confirm the factor structure, guarantee its internal consistency, and check both convergent and discriminant validity. After that, results of the proposed model reveal that opinion leadership is positively affected by perceived originality (β=.380, p<.01) and uniqueness (β=.298, p<.01), supporting H1a and H1b. However the influence of both perceived quality and quantity is non-significant. In turn, opinion leadership has a significant influence on the intention to continue interacting in the account (β=.558, p<.01), the intention to recommend the account online (β=.482, p<.01), and the consumer intention to follow the advice received in the Instagram account (β=.232, p<.01). As a result H2a, H2b and H2c are supported. Finally, while the interaction effects of online interaction propensity and opinion leadership are not significant, the interaction effect of perceived fit with personal interests and opinion leadership on the consumer intention to follow the advice received in the Instagram account (β=.078, p<.01) is significant. Therefore, H3c is supported. In sum, this study confirms that opinion leadership in the Instagram context may influence consumers and finds that originality and uniqueness are the key variables to develop this leadership and become influential, which suggests several implications for management.
        91.
        2017.04 KCI 등재 SCOPUS 구독 인증기관 무료, 개인회원 유료
        We investigate two abnormal CME-Storm pairs that occurred on 2014 September 10 - 12 and 2015 March 15 - 17, respectively. The first one was a moderate geomagnetic storm (Dstmin  -75 nT) driven by the X1.6 high speed flare-associated CME (1267 km s−1) in AR 12158 (N14E02) near solar disk center. The other was a very intense geomagnetic storm (Dstmin  -223 nT) caused by a CME with moderate speed (719 km s−1) and associated with a filament eruption accompanied by a weak flare (C9.1) in AR 12297 (S17W38). Both CMEs have large direction parameters facing the Earth and southward magnetic field orientation in their solar source region. In this study, we inspect the structure of Interplanetary Flux Ropes (IFRs) at the Earth estimated by using the torus fitting technique assuming self-similar expansion. As results, we find that the moderate storm on 2014 September 12 was caused by small-scale southward magnetic fields in the sheath region ahead of the IFR. The Earth traversed the portion of the IFR where only the northward fields are observed. Meanwhile, in case of the 2015 March 17 storm, our IFR analysis revealed that the Earth passed the very portion where only the southward magnetic fields are observed throughout the passage. The resultant southward magnetic field with long- duration is the main cause of the intense storm. We suggest that 3D magnetic field geometry of an IFR at the IFR-Earth encounter is important and the strength of a geomagnetic storm is strongly affected by the relative location of the Earth with respect to the IFR structure.
        4,200원
        92.
        2017.03 KCI 등재 구독 인증기관 무료, 개인회원 유료
        We built a 8 μm selected sample of galaxies in the NEP-AKARI eld by defining 4 redshift bins with the four AKARI bands at 11, 15, 18 and 24 microns (0:15 < z < 0:49, 0:75 < z < 1:34, 1:34 < z < 1:7 and 1:7 < z < 2:05) . Our sample contains 4079 sources, 599 are securely detected with Herschel/PACS. Also adding ultraviolet (UV) data from GALEX, we fit the spectral energy distributions using the physically motivated code CIGALE to extract the star formation rate, stellar mass, dust attenuation and the AGN contribution to the total infrared luminosity (LIR). We discuss the impact of the adopted attenuation curve and that of the wavelength coverage to estimate these physical parameters. We focus on galaxies with a luminosity close the characteristic L* IR in the different redshift bins to study the evolution with redshift of the dust attenuation in these galaxies.
        4,000원
        93.
        2017.03 KCI 등재 구독 인증기관 무료, 개인회원 유료
        The recent updates of the North Ecliptic Pole deep (0.5 deg2, NEP-Deep) multi-wavelength survey covering from X-ray to radio-wave is presented. The NEP-Deep provides us with several thousands of 15 μm or 18 μm selected galaxies, which is the largest sample ever made at these wavelengths. A continuous filter coverage in the mid-infrared wavelength (7, 9, 11, 15, 18, and 24 μm) is unique and vital to diagnose the contributions from starbursts and AGNs in the galaxies out to z=2. The new goal of the project is to resolve the nature of the cosmic star formation history at the violent epoch (e.g. z=1{2), and to find a clue to understand its decline from z=1 to present universe by utilizing the unique power of the multiwavelength survey. The progress in this context is brie y mentioned.
        4,000원
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