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Difference of Microorganisms Found in an Aerated submerged Biofilm Reactor with Different Plastic Media Terating Phenol Wastewater (페놀폐수를 처리하는 침적형 생물막 반응기에서 매질에 따른 미생물상의 차이)

  • 정재춘;차병훈
    • Microbiology and Biotechnology Letters
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    • v.23 no.4
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    • pp.492-498
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    • 1995
  • Net type polyvinylidene chloride (PVDC) media and cillium type polyethlene polypropylene (PEPP) media were installed in the aereted submerged biofilm reactors. Synthetic phenol wastewater for feed were made to contain 1,480 mg of phenol per liter of water. The organic loading range of reactors were 0.439-0.456 kg COD/m$_{3}$, 0.882 - 0.919 kg COD/m$_{3}$ and 1.199-1.339 kg COD/m$_{3}$. Comparing PVDC to PEPP media, the bacterial number found in biofilm on PEPP were slightly higher. With the low temperature (10$\circ$C), the number of bacteria was some what deceered. Number of bacterial strains identified from PVDC were 23 and those from PEPP were 42. Genera identified in the PVDC media were Flavobacterium (47.8%), Unidentified (17.6%), Pseudomonas (13.0%), Micrococcus (8.7%) and Beggratoa (8.7%). Genera identified in the PEPP media reactor were Pseudomonas (35.7%), Alcaligenes (19.0%), Aeromonas (14.33%) and Micrococcus (11.9%), In the steady, state, a filamentous bacteria, type 1701 was identified in all of the reactors. Paramecium sp. and fungi were present in the PVDC media reactor. While, Difflugia sp, Paramecium sp. and fungi were found in the PEPP media reactor. The low diversity of protozoa was ascribed to high concentration of phenol.

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A DOUBLE-EDGED SWORD: MEDIA AND RELIGION IN THE MIDDLE EAST (WITH SPECIAL EMPHASIS ON IRAN)

  • KHANI, MOHAMMAD HASSAN
    • Acta Via Serica
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    • v.3 no.1
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    • pp.43-56
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    • 2018
  • Religion and new media are two important factors in contemporary Middle Eastern societies. Media is seen as a relatively newcomer while religion has been and remains an old and core component of the fabric of societies in this region. This article is an attempt to examine the encounter of these two phenomena in the Middle East. It will try to explore the variety of ways by which new media have served religion both positively and negatively, and how religion has taken position for and against media in Middle Eastern countries in general and in the Iranian case in particular. It is also the purpose of this article to look at the different aspects of this relationship between media and religion, analyzing how one affected the other, and how this interaction affected society. It is argued that the outcome of the interaction between religion and media has had a great impact on shaping the social and political culture of the countries in this region including Iran. The dimensions of this impact will determine the outcome of the clash between modernity and tradition in the region.

Participation Intentions in Environmental Initiatives within Restaurant Social Media Communities: Exploring the Influence of Reward Types and the Moderating Effect of Social Media Participation Level (레스토랑 소셜미디어커뮤니티에서의 친환경이니셔티브 참여의도: 보상유형의 영향과 소셜미디어 참여수준의 조절효과)

  • Jang, Yoon Jung
    • Journal of the Korean Society of Food Culture
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    • v.38 no.4
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    • pp.239-245
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    • 2023
  • The objective of this study was to explore how different types of rewards affect customers' inclinations to engage in environmental activities promoted through restaurant social media platforms. In addition, we investigated the potential moderating role of customer level of participation within the social media community. A total of 202 valid responses obtained by distributing a self-administered survey among restaurant patrons were subjected to hierarchical regression analysis to examine relationships between variables. The findings underscored the significant influence of economic and social rewards on shaping customer intent to participate in environmental initiatives promoted within restaurant social media communities. Furthermore, the study revealed that the extent of customer participation within the social media community moderated the relationship between rewards and their likelihood to partake in environmentally conscious behaviors. These results have meaningful implications for restaurant managers seeking to promote environmental initiatives effectively through social media platforms and within their establishments.

Vegetative Growth of Four Strains of Hericium erinaceus Collected from Different Habitats

  • Imtiaj, Ahmed;Jayasinghe, Chandana;Lee, Geon-Woo;Shim, Mi-Ja;Rho, Hyun-Su;Lee, Hyun-Sook;Hur, Hyun;Lee, Min-Woong;Lee, U-Youn;Lee, Tae-Soo
    • Mycobiology
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    • v.36 no.2
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    • pp.88-92
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    • 2008
  • Vegetative growth of four different strains of Hericium erinaceus was observed. The temperature suitable for optimal mycelial growth was determined to be $25^{\circ}C$, with growth observed in the extend temperature range of $20{\sim}30^{\circ}C$. The different strains of this mushroom showed distinct pH requirements for their optimum vegetative growth, with the most favorable growth observed at pH 6. Considering vegetative mycelial growth, PDA, YM, Hennerberg, Hamada, and Glucose peptone were the most favorable media, and Czapek Dox, Hoppkins, Glucose tryptone, and Lilly were the most unfavorable media for these mushroom strains. With the exception of lactose, most of the carbon sources assayed demonstrated favorable vegetative growth of H. erinaceus. For mycelial growth, the most suitable nitrogen source was alanine and the most unsuitable was histidine. Oak sawdust medium supplemented with $10{\sim}20%$ rice bran was the best for mycelial growth of the mushroom.

Optimizing Bit Rate Control for Realtime TV Broadcasting Transmission using LTE Network (LTE 무선통신을 활용한 TV 생방송 중계화면 안정화 비트레이트 조정 연구)

  • Kwon, Mahnwoo;Lim, Hyunchan
    • Journal of Korea Multimedia Society
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    • v.21 no.3
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    • pp.415-422
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    • 2018
  • Advances of telecommunication technology bring various changes in journalism field. Reporters started to gather, edit, and transmit content to main server in media company using hand-held smart media and notebook computer. This paper tried to testify valid bit-rate of visual news content using LTE network and mobile phone. Field news like natural disasters need real-time transmission of video content. But broadcasting company normally use heavy ENG system and transmission satellite trucks. We prepared and experimented different types of visual content that has different bit-rates. Transmission tool was LU-60HD mobile system of LiveU Corporation. Transmission result shows that bit-rate of 2Mbps news content is not suitable for broadcasting and VBR (Variable Bit Rate) transmission has better definition quality than CBR (Constant Bit Rate) method. Three different bit-rate of VBR transmission result shows that 5Mbps clip has better quality than 1Mbps and 3Mbps. The higher bit-rate, the better video quality. But if the content has much movements, that cause delay and abnormal quality of video. So optimizing the balance between stability of signal and quality of bit-rate is crucial factor of real-time broadcasting news gathering business.

Change in Germination and Physiological Properties of Hippophae rhamnoides Seeds by Different Storage Period (갈매보리수나무 종자의 저장기간에 따른 발아 및 생리적 특성)

  • Choi, Chung Ho;Yang, Byeong Hoon
    • Korean Journal of Plant Resources
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    • v.28 no.4
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    • pp.533-540
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    • 2015
  • Germination properties, leachate electrical conductivity (EC), and inorganic compound leaching were analyzed to ascertain the storage ability and change of physiological characteristics during storage of Hippophae rhamnoides seeds. Seeds were placed in an incubator at 25℃ and sown in different soil media (sand, vermiculite and horticultural substrate) after being stored for 6, 18 and 30 months at 2℃. All germination properties decreased in accordance to an increase of the seed storage period. Compared with the seed storage for 18 months, germination percentage (GP), germination performance index (GPI), and germination value (GV) of seeds stored for 30 months decreased by more than 50%. When the seeds were sown in different soil media in a greenhouse, those germination properties were similar to the seeds germinated in an incubator, and mean germination time, GPI and GV had a significant difference except GP among soil media. EC and inorganic ion concentration had a strong positive correlation with the seed storage period, but the ratios of inorganic ions from stored seeds revealed that K+/Mg2+ and Na+/Mg2+ were inversely correlated with the storage period.

Is the SAM phantom conservative for SAR evaluation of all phone designs?

  • Lee, Ae-Kyoung;Hong, Seon-Eui;Choi, Hyung-Do
    • ETRI Journal
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    • v.41 no.3
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    • pp.337-347
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    • 2019
  • The specific anthropomorphic mannequin (SAM) phantom was designed to provide a conservative estimation of the actual peak spatial specific absorption rate (SAR) of the electromagnetic field radiated from mobile phones. However, most researches on the SAM phantom have been based on early phone models. Therefore, we numerically analyze the SAM phantom to determine whether it is sufficiently conservative for various types of mobile phone models. The peak spatial 1- and 10-g averaged SAR values of the SAM phantom are numerically compared with those of four anatomical head models at different ages for 12 different mobile phone models (a total of 240 different configurations of mobile phones, head models, frequencies, positions, and sides of the head). The results demonstrate that the SAM phantom provides a conservative estimation of the SAR for only mobile phones with an antenna on top of the phone body and does not ensure such estimation for other types of phones, including those equipped with integrated antennas in the microphone position, which currently occupy the largest market share.

Mycelial Growth and Extracellular Enzyme Activities of Wood-decaying Mushroom Strains on Solid Media (고체배지 상에서 목재부후성 버섯 균주들의 균사생장 특성과 세포외효소 활성)

  • Jeon, Sung-Min;Ka, Kang-Hyeon
    • The Korean Journal of Mycology
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    • v.42 no.1
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    • pp.40-49
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    • 2014
  • The mycelial growths of wood-decaying mushroom strains collected from Korean forests were investigated on solid media under different culture media and temperatures. Most of strains showed the higher mycelial growth on potato dextrose agar (PDA) than malt extract agar (MEA) or sabouraud dextrose agar (SDA) plates. Except for a few strains, they grew well on PDA at $25^{\circ}C$ and showed a poor growth at low temperature ($10^{\circ}C$) than high temperature ($30^{\circ}C$). All strains showed the carboxymethylcellulase (CM-cellulase) and laccase activities on solid media containing the specific substrates for two different enzymes.

A Study of Self-Realization in Cinema Space - Focus on the Symbol of Analytical psychology - (영화공간에서 나타난 자기실현과정에 관한 연구 - 분석심리학의 상징 중심으로 -)

  • Jeong, Hyang-Kug;Hur, Bum-Pall
    • Korean Institute of Interior Design Journal
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    • v.20 no.6
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    • pp.105-115
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    • 2011
  • We are inundated with visual media; countless such media, ranging from Hollywood blockbusters, American drama, Korean films with enormous budgets to independent films, appeal to our sensibility and engage our empathy and insight. The making of mega-hits that attract millions and a drama of viewer ratings of over forty percent lies in how persuasive the sensibility of the narratives are to an audience from a different milieu and personality. It leads to a question: how can empathy of such a varied group of people be won towards the perspective of directors and authors who come from different nationality and ethnicity to themselves? In exploring the issue, I aim to adopt a psychoanalytical view of human psychology, into consciousness and unconsciousness. Freudian psychoanalysis and Jungian analytic psychology in depth psychology underpin my analysis of visual media. It further enables my examination of unconsciousness applied to spatial design, which is elementary in visual media. In sum, this research aims to improve understanding of spatial design in films, a product of creative human consciousness, by interpreting this as an outcome of the unconscious. This is to apply the concept of collective unconscious in Jung's analytical psychology.

Growth of the Dinoflagellate Alexandrium tamarense Isolated from Jinhae Bay, Korea in Axenic Cultures

  • Lee, Hae-Ok;Ishimaru, Takashi;Toshiya, Katano;Han, Myung-Soo
    • Korean Journal of Environmental Biology
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    • v.24 no.3
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    • pp.275-281
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    • 2006
  • We examined effects of water temperature, salinity, irradiance, and different media on the growth of the toxic dinoflagellate Alexandrium tamarense (HYM9704), which was isolated from Jinhae Bay, Korea. The ranges of temperature and salinity in which the strain was able to grow were $10{\sim}20^{\circ}C$ and $20{\sim}34$ psu, respectively. These values were in accordance with those observed in situ. The maximum growth rates of axenic A. tamarense (HYM9704) was $0.25d^{-1}$ at $15^{\circ}C$, 30 psu, and $100{\mu}Em^{-2}s^{-1}$. The temperature affected the growth rates of axenic A. tamarense more significantly than the salinity. The type of culture media did not affect the growth rates of axenic A. tamarense. The strain in N-limited and P-limited media went into the stationary phase faster than that in T1 and T1/2 medium.