• Title/Summary/Keyword: Film Form

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Thermal Transitions of the Drawn Film of a Nylon 6/Layered Silicate Nanocomposite

  • Park Soo-Young;Cho Yang-Hwan
    • Macromolecular Research
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    • v.13 no.2
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    • pp.156-161
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    • 2005
  • The thermal transitions of a nylon 6/layered silicate nanocomposite were studied by differential scanning calorimetry and in-situ synchrotron X-ray diffraction. The drawn film of the nylon 6/layered silicate nanocomposite typically showed three endotherms in the DSC thermogram; a very broad endotherm at $\sim120^{\circ}C(T_{1})$, a double-melting endotherm at $\sim215^{\circ}C(T_{2})$, and a high temperature endotherm at $\sim240^{\circ}C(T_{3})$. The drawn film of the nylon 6/ layered silicate nanocomposite was comprised of a mixture of the $\alpha and \gamma$ forms, with $the \alpha form$ being generated by drawing the pressed film having $the \gamma form$. The melting and crystallization of the crystals were observed at the above thermal transitions during the heating experiment performed at the Pohang X-ray synchrotron radiation source (4C2). The newly generated form was meta-stable and melted $at {\sim}T_{1}$. The double-melting $at {\sim}T_{2}$ was due to the exothermic crystallization of $the \alpha form$ during the main endothermic melting of $the \gamma form$. $The \alpha form$ crystallized $at {\sim}T_{2}$ and melted $at {\sim}T_{3}$.

Formulation and Pharmaceutical Properties of Mucoadhesive Film Containing Dipotassium Glycyrrhizate (구내염증 치료용 구강점막 필름제의 제제설계와 약제학적 성질)

  • Rhee, Gye-Ju;Lee, Duk-Keun;Sin, Kwang-Hyun;Park, Chong-Bum
    • Journal of Pharmaceutical Investigation
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    • v.29 no.2
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    • pp.127-136
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    • 1999
  • In order to eliminate demerits of conventional dosage forms, dipotassium glycyrrhizate was formulated as a slim mucoadhesive film type dosage form. The mucoadhesive drug layer gel containing dipotassium glycyrrhizate was prepared using $Noveon^{\circledR}$ AA-1, hydroxypropylcellulose-M, ethylcellulose N 100 and citric acid, and the protective layer gel by using ethylcellulose N 100, $Eudragit^{\circledR}$ RS and castor oil. The viscosity of drug layer gel of mucoadhesive film was enhanced as the increased amount of $Noveon^{\circledR}$ AA-1 or hydroxypropyl cellulose-M. The drug content was unifonnly $1160{\pm}14.6\;{\mu}g$, and was varied within 3.5%. The optimum film dosage form showed a good fluidity and malleability of drug layer, with 179 g of thickness, pH 5.7, 411 min of in vitro adhesion time and 172 g in gravity adhesive strength. The release time of drug from the mucoadhesive film was significantly shorter but was delayed when polymers such as ethylcellulose was added. From these results, the new mucoadhesive film may be effective for the treatment of aphthous stomatitis.

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A Study on Characteristics of Storytelling by Fashion Film Categorization (패션 필름 유형에 따른 스토리텔링 특징 연구)

  • Kim, Jiye;Suh, Seunhee
    • Journal of Fashion Business
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    • v.21 no.4
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    • pp.1-20
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    • 2017
  • Fashion film has become a significant communication medium in the $21^{st}$ century. Fashion film, that tells unique quality stories, is a means of communicating brand value emotionally. To examine characteristics of storytelling according to types of fashion film, this study categorizes fashion film and investigates storytelling elements in terms of content, form, and communication. For methodology, a literature review was conducted to examine the concept of storytelling and types of fashion film storytelling. Empirical research was conducted on 32 fashion films from 2007 to recent years of 2017. Results are as follow. First, theatrical fashion film, based on linear narrative structure and closed-ending, is characterized content-based storytelling. Second, avant-garde fashion film, based on unconventional and experimental cinematic techniques, is characterized form-based storytelling. Finally, documentary fashion film that minimizes distortion and reproduces reality of designers' originality, refers to interactive communication-based storytelling which using digital technologies.

Electrical Conduction Characteristics of a Thick-film Form Multiwalled Carbon Nanotubes for Field Electron Emitter

  • Lee, Yun-Hi;Kim, Hoon;Ju, Byeong-Kwon;Yu, Jae-Eun;Oh, Myung-Hwan
    • 한국정보디스플레이학회:학술대회논문집
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    • 2000.01a
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    • pp.53-54
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    • 2000
  • Measurements of the direct current resistivity, on multiwalled carbon nanotubes(MWNT) for field electron emitter source that had been screen printed in a thick film form were made as a function of temperature T in the range of 1.7K-390K. In this measuring temperature range, the electrical resistivity for the MWNT show that the main contribution to the conductivity comes form carries that hop directly between localized states executing variable range hopping processes. This thick-film form system for large area display showed a high bright light emission as well as very low turn-on field as like an individual MWNT system at room temperature. Furthermore, the electron emission characteristics followed well typical Fowler-Nordheim conduction under the vacuum.

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EPD Thick Film Formation of Ceramic Powder Materials (세라믹 분말재료의 EPD 후막형성 기술)

  • Soh, Dea-Wha;Jeon, Yong-Woo
    • Journal of the Speleological Society of Korea
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    • no.75
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    • pp.49-54
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    • 2006
  • Electrophoretic Deposition (EPD) is the most convenient technology to deposit natural or oxide powders of nonconductive materials in alcoholic suspension solution with adding electrolyte of iodine to form ceramic thick film on metal substrate under applied electric field with double electric layer between electrode and metal substrate. In this research work, the important parameters and technical ways were studied to form EPD thick films of typical oxide ceramics of Al2O3, YBCO and tourmaline powders.

Silicon oxide and poly-Si film simultaneously formed by excimer laser (엑시머 레이저를 이용하여 동시에 형성된 실리콘 산화막과 다결정 실리콘 박막)

  • 박철민;민병혁;전재홍;유준석;최홍석;한민구
    • Journal of the Korean Institute of Telematics and Electronics D
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    • v.34D no.1
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    • pp.35-40
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    • 1997
  • A new method to form the gate oxide and recrystllize the polycrystalline silicon (poly-Si) active layer simultaneously is proposed and fabricated successfully. During te irradiation of excimer laser, the poly-Si film is recrystallized, while the oxygen ion impurities injected into the amorphous silicon(a-Si) film are activated by laser energy and react with silicon atoms to form SiO2. We investigated the characteristics of the sample fabricated by proposed method using AES, TEM, AFM. The electrical performance of oxide was verified by ramp up voltage method. Our experimental results show that a high quality oxide, a pol-Si film with fine grain, and a smooth and clean interface between oxide and poly-Si film have been successfully obtained by the proposed fabrication method. The interface roughness of oxide/poly-Si fabricated by new method is superior to film by conventional fabrication os that the proposed method may improve the performance of poly-Si TFTs.

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Technologies for Small Form Factor Optical Disks (초소형 디스크 요소기술)

  • Kim Jin-Hong;Kim Jong-Hwan
    • 정보저장시스템학회:학술대회논문집
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    • 2005.10a
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    • pp.113-118
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    • 2005
  • Small form factor optical disks for near-field optics using solid immersion lens were developed. Disk durability properties in terms of head-disk interface (HDI) properties were investigated by drag test, diamond like carbon film and lubricant film were coated on the small form factor disk to enhance HDI. Disks with glass substrates and lubricant films after heat treatment showed more durable characteristics. Coverlayers made of UV resin were uniformly coated by spin coating In which the ski-jump could not be formed by adopting outer ring technique.

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Technologies for Small Form Factor Optical Disks (초소형 디스크 요소기술)

  • Kim, Jin-Hong
    • Transactions of the Society of Information Storage Systems
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    • v.2 no.1
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    • pp.26-31
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    • 2006
  • Small form factor optical disks for near-field optics using solid immersion lens were developed. Diamond like carbon film and lubricant film were coated on the small form factor optical disk to enhance the head-disk interface(HDI) characteristics. The disk durability properties in terms of HDI phenomena were investigated by drag test. Disks with glass substrates and the lubricant films experienced heat treatment showed more durable characteristics. Coverlayers made of UV resin were uniformly coated by spin coating in which the ski-jump could be removed by adopting outer ring technique

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Agnès Varda's Vagabond and Aesthetic (아네스 바르다의 <방랑자>와 형식적 실험)

  • Kim, Sook-Hyun
    • The Journal of the Korea Contents Association
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    • v.13 no.2
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    • pp.100-107
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    • 2013
  • Agn$\grave{e}$s Varda is a French representative female film director. In particular, the method combining subjectivity and objectivity is the most outstanding characteristics. However, it can be said that the method to support this is not only theme of the film but also creation of structure including the exploration for the filmic form different from classical film form. Such an approach accords with No$\ddot{e}$l Burch's refined analysis of filmic form. Therefore, This study aims to aesthetical analysis of the form of producing the structure in modern movies through which is one of the representative work by Agn$\grave{e}$sVarda and won the Golden Lion award in 1985 Venice Film Festival. The theme of the film, the recovery of relationships among people and contacts through the tragic death of drifting life, created a new filmic structure by formative experiment of the film. The formative experiment is the fragmented and repetitive construction with the introductory voice-over, and consists of movement and editing of camera and specific use of flashback and sound through the representation of figures and situations, mixture of narrative and non-narrative style.

Synthesis of biodegradable films obtained from rice husk and sugarcane bagasse to be used as food packaging material

  • Gupta, Himanshu;Kumar, Harish;Kumar, Mohit;Gehlaut, Avneesh Kumar;Gaur, Ankur;Sachan, Sadhana;Park, Jin-Won
    • Environmental Engineering Research
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    • v.25 no.4
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    • pp.506-514
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    • 2020
  • The current study stresses on the reuse of waste lignocellulose biomass (rice husk and sugarcane bagasse) for the synthesis of carboxymethyl cellulose (CMC) and further conversion of this CMC into a biodegradable film. Addition of commercial starch was done to form biodegradable film due to its capacity to form a continuous matrix. Plasticizers such as Glycerol and citric acid were used to provide flexibility and strength to the film. Biopolymer film obtained from sugarcane bagasse CMC showed maximum tensile strength and elongation in comparison to the film synthesized from commercial CMC and CMC obtained from rice husk. It has been observed that an increase in sodium glycolate/NaCl content in CMC imposed an adverse effect on tensile strength. Opacity, moisture content, and solubility of the film increased with a rise in the degree of substitution of CMC. Therefore, CMC obtained from sugarcane bagasse was better candidate in preparing biopolymer/biocomposite film.