• Title/Summary/Keyword: media-source

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Regeneration Studies in Grateloupia filicina (J.V. Lamouroux) C. Agardh - An Important Carrageenophyte and Edible Seaweed

  • Baweja, Pooja;Sahoo, Dinabandhu
    • ALGAE
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    • v.24 no.3
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    • pp.163-168
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    • 2009
  • Grateloupia filicina (J.V. Lamouroux) C. Agardh (Halymeniaceae, Cryptonemiales, Rhodophyta) is an edible seaweed as well as an important source of carrageenan. In the present study, attempt has been made to develop a suitable protocol for effective regeneration of the seaweed and the rapid multiplication of the desired varieties. The young upright thallus of G. filicina was grown in axenic culture using both solid and liquid media. The various media tested were f/2, Provasoli’s Enriched Seawater (PES) and Enriched Seawater (ESW). The effect of glycerol (as a carbon source) and various plant growth regulators i.e. auxin (NAA) and cytokinins (Kinetin and BA) were tested. Although, regeneration of young thalli was observed from the cut ends in all the media, better growth was found in f/2, PES, f/2 (0.5% Glycerol), f/2 (NAA ${10^{-5}}_M)\;and\;f/2\;(BA\;{10^{-6}}_M$). On the other hand callusing was observed only in solid media supplemented with low concentration of Glycerol (0.5%) in f/2, NAA ${10^{-5}}_M\;in\;f/2,\;PES\;and\;BA\;{10^{-5}}_M$ in f/2. Young thalli were developed from the callus sub culture after 40 days of inoculation.

Development of Economical Fertilizer-Based Media for Mass Culturing of Nannochloropsis oceanica

  • Bae, Jean-Hee;Hur, Sung-Bum
    • Fisheries and Aquatic Sciences
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    • v.14 no.4
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    • pp.317-322
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    • 2011
  • This study was conducted to develop economical agricultural fertilizer media for the mass culturing of Nannochloropsis oceanica. Specific growth rates of N. oceanica cultured with differing concentrations of commercial compounds, urea fertilizers, and trace elements (Zn, Cu, Co, Mo) were compared with the growth rate in f/2 medium. Among the various added trace elements, $CuSO_4{\cdot}5H_2O$ was most effective for high growth of N. oceanica. The main nitrogen source in the agricultural fertilizers was ammonium, which was unsuitable for the growth of N. oceanica. Thus, the fertilizer at a lower concentration infused with $NaNO_3$ as a nitrogen source was more effective than fertilizer at higher concentrations. In this study, the growth of N. oceanica cultured with an agricultural fertilizer medium composed of compound fertilizer (41.7 mg/L), urea fertilizer (34.4 mg/L), $NaNO_3$ (150 mg/L), and $CuSO_4{\cdot}5H_2O$ (0.0588 mg/L) was similar to that of N. oceanica cultured in f/2 medium.

Dynamic characteristics of TbFeCo Magneto-Optical recording media at 680nm wavelength region (680nm 파장에서 TbFeCo 광자기 기록매체의 동특성)

  • Yoon, Doo-Won;Yeon, Cheong;Kim, Myong-Ryeong
    • Electrical & Electronic Materials
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    • v.8 no.5
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    • pp.558-563
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    • 1995
  • Dynamic characteristics of TbFeCo magneto-optical recording media at 680nm wavelength region were studied by means of computer simulation of disc structure and optimization of process variables during sputter deposition. With the slightly reduced Kerr rotation angle due to the reduced wavelength of optical laser source, the improved recording density in TbFeCo magneto optical media showing the CNR greater than 50dB could be achieved by only adjusting the thickness of dielectric and the recording layers when the wavelength of light source is changed from 780nm to 680nm. In addition, the recording power margin of 5mW and the 2mW minimum recording power was realized, It was shown from the present study that the increase in laser power density demonstrated feasibility of low cost and low power laser diode with the reduced optimum recording power.

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Effects of Temperature and Culture Media Composition on Sporulation, Mycelial Growth, and Antifungal Activity of Isaria javanica pf185

  • Lee, Jang Hoon;Lee, Yong Seong;Kim, Young Cheol
    • Research in Plant Disease
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    • v.27 no.3
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    • pp.99-106
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    • 2021
  • The fungal isolate Isaria javanica pf185 has potential as a mycopesticide because it demonstrates insecticidal activity against the green peach aphid and antifungal activity against Colletotrichum gloeosporioides. For commercialization of this isolate, determination of the optimal and least expensive culture conditions is required; however, these data are not currently available. This study describes the conditions for optimal development of conidia and production of metabolites for the biocontrol of the fungal pathogen. The optimal culture conditions were examined using cultures on solid agar and liquid media. High growth temperature enhanced spore formation but reduced antifungal activity in both solid and liquid media. The highest spore yield was obtained in a medium containing glucose as a carbon source and yeast extract as a nitrogen source. Soybean powder and wheat bran were effective nitrogen sources that promoted spore production and antifungal activity of the isolate. These results revealed the basic, cost-effective growth media for commercial production of a biopesticide with insecticidal and antifungal properties for use in integrated pest management.

Voxel-wise UV parameterization and view-dependent texture synthesis for immersive rendering of truncated signed distance field scene model

  • Kim, Soowoong;Kang, Jungwon
    • ETRI Journal
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    • v.44 no.1
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    • pp.51-61
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    • 2022
  • In this paper, we introduced a novel voxel-wise UV parameterization and view-dependent texture synthesis for the immersive rendering of a truncated signed distance field (TSDF) scene model. The proposed UV parameterization delegates a precomputed UV map to each voxel using the UV map lookup table and consequently, enabling efficient and high-quality texture mapping without a complex process. By leveraging the convenient UV parameterization, our view-dependent texture synthesis method extracts a set of local texture maps for each voxel from the multiview color images and separates them into a single view-independent diffuse map and a set of weight coefficients for an orthogonal specular map basis. Furthermore, the view-dependent specular maps for an arbitrary view are estimated by combining the specular weights of each source view using the location of the arbitrary and source viewpoints to generate the view-dependent textures for arbitrary views. The experimental results demonstrate that the proposed method effectively synthesizes texture for an arbitrary view, thereby enabling the visualization of view-dependent effects, such as specularity and mirror reflection.

Clothing Involvement and Clothing Information Source on Personality Types (MBTI 성격유형에 따른 의복관여와 의복정보원)

  • Oh, Hyun-Jeong
    • Journal of Global Scholars of Marketing Science
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    • v.9
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    • pp.1-17
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    • 2002
  • The purposes of this study were to investigate clothing involvement and clothing information source on personality types. Personality types were applied using Myers-Briggs Type Indicator(MBTI). Clothing involvement was measured using 17 questions of 5-point scales. Clothing information source was measured using 16 items of 5-point scales. The data were collected from 275 female using questionnaire. The data analysed with frequence, factor analysis, t-test, one-way ANOVA, and Duncan test. The clothing involvement included three factors: Symbolic Expression, Pleasure and Interest, and Fashionability. The clothing information source included four factors: Printed Media, Radio Media, Professional Media and Store Search. Extroversion-introvertion and thinking-feeling index had significant difference in the dimensions of clothing involvement. Extroversion types were significantly evaluated fashionability more than introvertion types(t=2.008, p<.05). Feeling types were significantly evaluated fashionability more than thinking types (t=2.428, p<.05). Extroversion-introvertion index had significant difference in clothing information source. Extroversion types were significantly used printed media more than Introvertion types.

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Interaction Design Type in sensor-based meida installation Artwork (센서 기반 미디어 설치 제작에서의 인터랙션 설계유형)

  • Seo, Sang Hee;Lee, Jung Eun
    • The Journal of the Convergence on Culture Technology
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    • v.9 no.5
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    • pp.747-752
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    • 2023
  • This study is about interaction design types in the production of sensor-based media installations combining Arduino, an open source platform. By typifying the realized media installation works, we seek to explore the diversity and meaning of new media art expression methods. Based on the understanding of the interaction method of media art, the interaction design type in the production of media installation using sensors was divided into physical movement through motor control, 'artificial plants using ultrasonic sensors and motors', and 'virtual garden using light and sound sensors'. 'Moving images using tilt sensors' are classified into four types. Through this, it is expected that media software can be selected as an appropriate technology for the work and can be presented as an example of artistic expression that is evolving into various expressions.

Study on 3 Dimensional Images Using LED by PLS with No Viewing Zone Forming Optics (LED를 PLS 배열로 사용한 시역 형성 광학계가 없는 3차원 영상의 시역에 대한 연구)

  • Choi, Kyu-Hwan;Kim, Sung-Kyu;Son, Jung-Young
    • Korean Journal of Optics and Photonics
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    • v.19 no.2
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    • pp.116-121
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    • 2008
  • A two dimensional point light source array can replace both the viewing zone forming optics and the back light panel in the contact-type 3 dimensional imaging systems based on LC panels. This replacement can make the system structure of the 3 dimensional imaging systems no different from that of the conventional LCD and can reduce undesirable visual effects caused by the viewing zone forming optics. The problem with the point light source array is the visual quality deterioration of the system due to the non-ideal nature of the array.

Contaminant transport through porous media: An overview of experimental and numerical studies

  • Patil, S.B.;Chore, H.S.
    • Advances in environmental research
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    • v.3 no.1
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    • pp.45-69
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    • 2014
  • The groundwater has been a major source of water supply throughout the ages. Around 50% of the rural as well as urban population in the developing countries like India depends on groundwater for drinking. The groundwater is also an important source in the agriculture and industrial sector. In many parts of the world, groundwater resources are under increasing threat from growing demands, wasteful use and contamination. A good planning and management practices are needed to face this challenge. A key to the management of groundwater is the ability to model the movement of fluids and contaminants in the subsurface environment. It is obvious that the contaminant source activities cannot be completely eliminated and perhaps our water bodies will continue to serve as receptors of vast quantities of waste. In such a scenario, the goal of water quality protection efforts must necessarily be the control and management of these sources to ensure that released pollutants will be sufficiently attenuated within the region of interest and the quality of water at points of withdrawal is not impaired. In order to understand the behaviour of contaminant transport through different types of media, several researchers are carrying out experimental investigations through laboratory and field studies. Many of them are working on the analytical and numerical studies to simulate the movement of contaminants in soil and groundwater of the contaminant transport. With the advent of high power computers especially, a numerical modelling has gained popularity and is indeed of particular relevance in this regard. This paper provides the state of the art of contaminant transport and reviews the allied research works carried out through experimental investigation or using the analytical solution and numerical method. The review involves the investigation in respect of both, saturated and unsaturated, porous media.

A Study on the Development of an Independent Movement Collection Classification System: Focus on the Gonghun Digital Archive (독립 운동 컬렉션 분류 체계 개발에 관한 연구 - 공훈전자사료관을 중심으로 -)

  • Oh, Jung Hee;Chung, Yeon Kyoung
    • Journal of Korean Society of Archives and Records Management
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    • v.18 no.4
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    • pp.99-124
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    • 2018
  • This study suggests the development of a classification system for the Independent Movement Records of the Ministry of Patriots and Veterans Affairs based on the collection of Gonghun Digital Archive based on sources, subjects, and media types. First, the classification system by source is organized by hierarchy, and the records classified by source are classified into the second category based on the related keyword. Then, the records are classified into 17 media types. Finally, it is described in the citation order of "source-subject-media type." In addition, a meaningful collection using inductive methods based on the subject words is derived. Finally, Gonghun Digital Archive collections are categorized by media types, sources, and subjects so that users can easily find the records. The result of this study is a classification system to support records retrieval of an independent movement collection, and it will become a basis for expanding the accessibility of the user and the service of independent movement records.