• Title/Summary/Keyword: Content element analysis

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A simple practical method for determination of moisture transfer coefficient of mature concrete using a combined experimental-numerical approach

  • Chari, Mehdi Nemati;Shekarchi, Mohammad;Ghods, Pouria;Moradian, Masoud
    • Computers and Concrete
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    • v.18 no.3
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    • pp.367-388
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    • 2016
  • In this paper, a simple practical method is introduced in which a simple weight measurement of concrete and finite element numerical analysis are used to determine the moisture transfer coefficient of concrete with a satisfactory accuracy. Six concrete mixtures with different water-to-cementitious material (w/cm) ratios and two pozzolanic materials including silica fume and zeolite were examined to validate the proposed method. The comparison between the distribution of the moisture content obtained from the model and the one from the experimental data during both the wetting and drying process properly validated the performance of the method.With the proposed method, it was also shown that the concrete moisture transfer coefficient considerably depends on the pore water saturation degree. The use of pozzolanic materials and also lowering w/cm ratio increased the moisture transfer coefficient during the initial sorption, and then, it significantly decreased with an increase in the water saturation degree.

Blood Chemistry in Periodontal Disease (치주질환시의 혈생화학적연구)

  • Han, K.H.
    • The Journal of Korean Academy of Prosthodontics
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    • v.9 no.1
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    • pp.59-62
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    • 1969
  • The causes of periodontal disease have been descried as malocclusion, trauma from occlusion, local irritants and poor oral hygien. The systemic factor has also been considered as a etiologic factor of periodontal disease. On the other aspect systemic condition could be affected by periodontal disease. For the study of relationships between periodontal disease and systemic condition, twenty patients with periodontal disease and twenty persons with no periodontal involvement were evaluated for inorganic elements and organic materials in the blood. The results of the blood analysis of the two groups were as follows. : Phosphorus and alkline-phoshatase in the group with periodontal disease showed slightly increased phenomenon compared to the control group, and on the other hand calcium and calcium-phosphorus ratio decreased phenomenon. But there is no any significant alteration in the content of each element between the two groups.

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Analysis of Emoticon-based Character Contents Utilization in Social Network Service Environment (사회 관계망 서비스 환경에서 이모티콘 기반 문자 콘텐츠 활용 분석)

  • Ko, Kwang-Man
    • Journal of Digital Contents Society
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    • v.18 no.1
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    • pp.231-238
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    • 2017
  • Today, as a means of online communication, the use of emoticons is activated in SNS. Emoticon is an important element to share impact effects and fun together with various content design attempts. In this paper, we analyze the expression patterns changed through development process of emoticons, and analyze characteristics and effects of emoticons which are combined with traditional culture among the types of emoticons currently used.

Adsorption of Metal Ions on Cryptand Synthetic Resin (Cryptand 합성수지에 위한 금속 이온들의 흡착)

  • Lee Chi-Young;Kim Joon-Tae
    • Journal of environmental and Sanitary engineering
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    • v.20 no.4 s.58
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    • pp.38-44
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    • 2005
  • Cryptand resins were synthesized with 1-aza-15-crown-5 macrocyclic ligand attached to styrene divinylbenzene (DVB) copolymer with crosslink of $1\%,\;2\%,\;5\%\;and\;10\%$ by substitution reaction. The synthesis of these resins was confirmed by content of chlorine, element analysis, and IR-spectrum. The effects of pH, time, dielectric constant of solvent and crosslink on adsorption of uranium$(UO_2^{2+})$ ion were investigated. The uranium ion was showed fast adsorption on the resins above pH 3. The optimum equilibrium time for adsorption of metallic ions was about two hours. The adsorption selectivity determined in ethanol was in increasing order uranium$(UO_2^{2+})$ > zinc$(Zn^{2+})$ > samarium$(Sm^{3+})$ ion. The adsorption was in order of $1\%>2\%>5\%>10\%$ crosslink resin and adsorption of resin decreased in proportion to order of dielectric constant of solvents.

Adsorption Characteristic of Mg(II), Al(III), Pb(II) Metal Ions on Cryptand Ion Exchange Resin from Water Fire Extinguishing Agent (물 소화약제로부터 Cryptand 이온교환수지의 Mg(II), Al(III) 및 Pb(II) 흡착특성)

  • Kim, Joon-Tae;Kim, Kwan-Chun
    • Journal of environmental and Sanitary engineering
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    • v.23 no.1
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    • pp.57-65
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    • 2008
  • Resins were synthesized with 1-aza-15-crown-5 macrocyclic ligand attached to styrene(dangerous matter) divinylbenzene(DVB) copolymer with crosslink of 1, 2, 6 and 15% by substitution reaction. The synthesis of these resins was confirmed by content of chlorine, element analysis, and IR-spectrum. The effects of pH, time and crosslink on adsorption of metal ion from water fire extinguishing agent by the synthetic resin adsorbent were investigated. The metal ion was showed fast adsorption on the resins above pH 3. The optimum equilibrium time for adsorption of metallic ions was about two hours. The adsorption selectivity determined in water was in increasing order of $Mg^{2+}>Al^{3+}>Pb^{2+}$. The adsorption was in the order of 1, 2, 6, and 15% crosslink resin.

Thermal Crack Control Using Optimized Steps of Concrete Placement in Massive Concrete Foundation (대형 기초 콘크리트의 분할타설 방법을 고려한 수화열에 의한 온도균열 제어 대책)

  • 김동규;조선규;김은겸
    • Proceedings of the Korea Concrete Institute Conference
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    • 2000.10b
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    • pp.1169-1174
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    • 2000
  • Since the cement-water reaction in exothermic by nature, the temperature rise within a large concrete mass. Significant tensile stresses may develop from the volume change associated with the increase and decrease of the temperature with the mass concrete. There thermal stresses will cause temperature-related cracking in mass concrete structure. These typical type of mass concrete include mat foundation, bridge piers, thick wall, box type walls, tunnel linings, etc. Crack control methods can be considered at such stages as designing, selecting the materials, and detailing the construction method. Temperature and analysis was performed by taking into consideration of the cement type and content, boundary and environment conditions including the variations of atmospheric temperature and wind velocity. This is paper, the effect of separate placement of thermal crack control footing was analysed by a three dimensional finite element method. As a result, using this method, thermal crack control can be easily performed for structures such as mat structures.

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A Study on the mobile application of Fashion Brands

  • Kim, Sung-Hee
    • Journal of Fashion Business
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    • v.14 no.6
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    • pp.134-145
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    • 2010
  • The purpose of this study is 1) to investigate the contents of fashion brand applications and what differences and 2) to scrutinize the reviews of the applications uploaded on the app store in order to suggest strategies on how to apply them to fashion. For the study, twenty-nine free applications from different categories of the fashion brands and three hundred sixty-two reviews of these applications were investigated. The analysis of the study was conducted from June 20th to November 10th of 2010. The results showed that there are four important components for fashion brand applications: conventional information (product information and store information), the purchasing function, the fun element (social networking, blogging, music etc), and the augmented reality technique. These components are formulated based on the brand's marketing strategies. In order to know whether or not these components were successfully composed, user reviews were studied, which revealed that many users were satisfied, but the applications were insufficient to meet all of their needs.

Analysis of Mineral in Korean Apple Juice by Inductively Coupled Plasma (Inductively Coupled Plasma를 이용한 사과주스중의 무기성분 분석)

  • 김성수
    • The Korean Journal of Food And Nutrition
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    • v.12 no.4
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    • pp.344-349
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    • 1999
  • The mineral contents were analyzed for apple juices by Inductively Coupled Plasma. The Mg contents of tested commercial apple juices ranged 6.27∼32.91ppm, Ca 15,95∼3.11.76ppm K231∼1148.02ppm Na 39.82∼115.68ppm and P 19.27∼304.02ppm. The mineal contents of model apple juice were Mg 29.83∼45.65ppm Ca 16.98∼30.98ppm K 814.28∼1,256.70ppm Na 19.88∼26.85ppm and P 25.88∼54.71ppm. respectively. Comparing mineral contents of model apple juices and commercial apple juice, Na, Ca and P contents of commercial apple juices were higher but Mg, K contents were lower than that of model apple juices. Among the mineral content of apple juices. K was the major element.

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Functional Analysis of Music Used in Film

Transforming Understanding of Women's Rights in Kyrgyz Madrassas

  • SEITALIEVA, GULMIZA
    • Acta Via Serica
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    • v.6 no.1
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    • pp.1-30
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    • 2021
  • Education is a key element in shaping the worldview of the next generation and determines society's core values, ideology, and basic understanding of human rights. While Kyrgyzstan is a secular state, Islamic education, backed by Arab and Turkish sponsors, continues to increase in popularity with the construction of thousands of mosques and dozens of new Islamic educational institutions. Young women have become an important target for Islamic ideology and Islamic educational institutions seek to introduce a new type of ideal woman who is obedient, submissive, and modest. This research uses curricula content analysis, participant observation, and in-depth interviews with teachers and students to examine the effects of newly introduced Islamic education institutions and concludes that the schools are succeeding in training female Kyrgyz students for sheltered lives of dependency, threatening to fundamentally erode women's rights in the country. Two tasks thus demand the attention of policymakers: preserving Kyrgyzstan's secular state and introducing new interpretations of the Quran, which strengthen support for women's rights among believers.