• Title/Summary/Keyword: fused

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Changes of Shape retention and Total Appearance Value(TAV) After Fusing (접착포의 형태 보형성(shape retention)과 TAV(Total Appearance Value)의 변화)

  • 지주원;유효선
    • Journal of the Korean Society of Clothing and Textiles
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    • v.24 no.7
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    • pp.1015-1024
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    • 2000
  • The purpose of this study is 1) to analyse the bending property of the fused fabric and each component of the fused fabrics. 2) to examine the effect of fusing temperature on the bending property of the fused interlining and fused fabrics. 3) to examine the changes of B/W, 2HB/W and TAV of the fused fabrics according to the types of face fabric, interlining, fusing temperature. Five types of wool fabric, four types of shingosen fabric and four types of interlining were used for this study. The fusing condition in this study were the three types of fusing temperature of 10$0^{\circ}C$, 12$0^{\circ}C$, 14$0^{\circ}C$, the pressure of 4 kgㆍf/$cm^2$, and pressing time of 12 seconds. The results obtained from this study were as follows. 1) The bending rigidities and hysteresis of fabrics after fusing were increased. The bending behavior of fused fabrics were governed by the bending behavior of face fabric and interlinings and $\alpha$$_{B}$ values. 2) The KES standardized basic values of B/W and 2HB/W were increased after fusing. The B/Ws of fused fabrics were mainly determined by the $\alpha$$_{B}$ values of interlinings. The 2HB/Ws of fused fabrics seemed to be controlled by the fusing temperature. 3) The changes of TAVs of wool fused fabrics differed from those of shingosen fused fabrics. As the $\alpha$$_{B}$ values of fabric were larger and fusing temperature were increased, the TAVs of wool fused fabrics were smaller though those of shingosen fused fabrics were larger. 4) The TAVs of fused fabrics were highly correlated with the B/Ws of fused fabrics. In the case of wool fused fabrics, the TAVs of fused fabrics were negativly correlated with the 2HB/Ws of wool fabrics and used interlinings.nings.

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A RADIOGRAPHIC STUDY OF FUSED AND GERMINATED TOOTH (유합치와 쌍생치에 관한 방사선학적 연구)

  • Park Chull Jea;Lee Sang Rae
    • Journal of Korean Academy of Oral and Maxillofacial Radiology
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    • v.20 no.1
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    • pp.79-89
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    • 1990
  • The incidence and several characteristic features of fused and geminated teeth were studied radiographically, with full mouth periapical radiogram and pantomogram, in 4201 patients of mixed dentition and 5358 patients of permanent dentition. The obtained results were as follows: 1. The prevalence was revealed to 2.86%, 0.32%, 0.33%, and 0.06% in deciduous fused tooth, permanent fused tooth, deciduous geminated tooth and permanent geminated tooth respectively, and these anomalies were occured in female more than male. 2. Fused teeth were observed predominantly in lower anterior teeth area, especially in lateral incisor and canine region, and many cases of deciduous geminated tooth were observed in upper central incisor region. 3. Congenital missing rates of succedaneous tooth in deciduous fused teeth were 57.1 %, 85.7%, 71.0%, 69.0% in upper right and left central-lateral incisor regions, lower right and left lateral incisor-canine regions, respectively. 4. Prevalence of dental caries was 42.3%, 18.8% and 5.6% in deciduous fused, deciduous geminated and permanent fused tooth, respectively. 5. In classifying of fused and geminated teeth into 9 types, by following appearance such as number of crown, root, pulp chamber and pulp canal of those teeth, it was more favorable that Type Ⅰ(2 crown, 2 root, 2 pulp chamber, 2 pulp canal) in deciduous fused tooth and Type Ⅸ (I crown, 1 root, 1 pulp chamber, 1 pulp canal) in permanent fused tooth, deciduous and permanent geminated tooth.

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changers of Mechanical Properties of Wool Woresed fabrics with fusible Interlingings(Part II) (모직물의 접착심 접착에 의한 물성의 변화 (제2보))

  • 지주원;유효선;이대훈
    • Journal of the Korean Society of Clothing and Textiles
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    • v.23 no.1
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    • pp.22-29
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    • 1999
  • This paper descrived the changes of peel strength wrinkle recovery and dimensional stability after fusing 4 different wool face fabrics with 3 different fusible interlinings. The fusing condition was conducted by fusing press machine under 4kg.f/cm2 at 15$0^{\circ}C$. To determine the effect of the varous physical properties of the fused fabrics face fabrics and interlinings on the peel strength wrinkle recovery and dimensional stability(hygral expansion and relaxation shrinkage) of fused fabrics correlation among the KES values of fused fabrics face fabrics and interlinings to the peel strength rinkle recovery and dimensional stability of fused fabrics were expeerimentally analyzed,. As the results the peel strength was mainly influenced by the cover factor of face fabric and interlinings. After fusing wrinkle recovery and hygral expansion were decreased. The cover factor wrinkle recovery weight thickness shear rigidity and frictional properties of face fabric and the thickness of fused fabrics were not influence to the wrinkle recovery of fused fabrics. In addition the dimensional stabilities of fused fabrics were mainly influenced by the tensile and frictional properties of the wrinkle recovery of fused fabrics. In addition the dimensional stabilities of fused fabrics were mainly influenced by the tensile and frictional properties of the face fabrics.

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Optimization of Fused Quartz Cantilever DRIE Process and Study on Q-factors (비정질 수정 캔틸레버의 식각 공정 최적화 및 Q-factor 연구)

  • Song, Eun-Seok;Kim, Yong-Kweon;Baek, Chang-Wook
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.60 no.2
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    • pp.362-369
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    • 2011
  • In this paper, optimal deep reactive ion etching (DRIE) process conditions for fused quartz were experimentally determined by Taguchi method, and fused quartz-based micro cantilevers were fabricated. In addition, comparative study on Q-factors of fused quartz and silicon micro cantilevers was performed. Using a silicon layer as an etch mask for fused quartz DRIE process, different 9 flow rate conditions of $C_4F_8$, $O_2$ and He gases were tested and the optimum combination of these factors was estimated. Micro cantilevers based on fused quartz were fabricated from this optimal DRIE condition. Through conventional silicon DRIE process, single-crystalline silicon micro cantilevers whose dimensions were similar to those of quartz cantilevers were also fabricated. Mechanical Q-factors were calculated to compare intrinsic damping properties of those two materials. Resonant frequencies and Q-factors were measured for the cantilevers having fixed widths and thicknesses and different lengths. The Q-factors were in a range of 64,000 - 108,000 for fused quartz cantilevers and 31,000 - 35,000 for silicon cantilevers. The experimental results supported that fused quartz had a good intrinsic damping property compared to that of single crystalline silicon.

Effect of Addition of Fused Alumina on Mechanical Properties of $\alpha$-alumina/$\beta$"-alumina System (Fused Alumina의 첨가가 $\alpha$-alumina/$\beta$"-alumina계의 기계적 성질에 미치는 영향)

  • Gang, Seok-Won;Son, Myeong-Suk;Kim, Hae-Du
    • 연구논문집
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    • s.22
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    • pp.107-113
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    • 1992
  • The $\alpha$-alumina/fused alumina/$\beta$"-alumina specimens were fabricated by addition of fused alumina to $\alpha$-alumina/$\beta$"-alumina system. The sintered densities with and without fused alumina were almost same. But, the bending strength was decreased due to the presense of defects caused by the inhomogeneous dispersion of large fused alumina particles. And the fracture toughness was also decreased because the crack propagated through the fused alumina particles due to the imperfection of $\beta$"-alumina coating around them.

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Effect of The Fused Siliceous Materials on Rice Plant (수도(水稻)에 대(對)한 합성규산물질(合成珪酸物質)의 효과(效果))

  • Lee, Y.H.;Han, K.H.;Lim, S.U.
    • Applied Biological Chemistry
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    • v.14 no.3
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    • pp.183-189
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    • 1971
  • The studies reported herein were conducted to inquire the effect of fused siliceous materials which mixed with sand and quartz added calcium fertilzer on rice grown on low available silica content soil. The applied nitrogen level were examined for the two plots, nitrogen 10kg and 20kg per 10 a., and the siliceous materials(Wollastonite, Fused sand and Fused quartz) were applied as levels to 100kg, 300kg and 500kg per 10a. in the pots. The results are summerized as follows; 1. The available silica content solved in N/2 HCl solution of fused sand was more than of fused quartz but the silica solubility in 2% citric acid of fused quartz were higher than other. 2. The absorbed silica content by plant grown on the fused quartz plot was the highest among other siliceous materials and of fused sand and natural wollastonite were at almost equal. The ratio of absorbed silica of natural wollastonite was highest among them and in fused materials, the quartz was higher than sand. 3. The productivity of rice was increased by percentage of filled grain, weights of 1000 grains, and number of spikelets on account of the large quantity of the silica absorbed by plant Especially fused quartz showed the highest productive effect among siliceous materials and natural wollastonite and fused sand were similar effect. 4. From the above results. the fused quartz was selected as expelled siliceous fertilizer on rice plant among them and the fused sand was equal effect to natural wollastonite.

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Optimization for Fused Quartz DRIE using Taguchi Method (다구치 방법을 이용한 비정질 수정 건식 식각 최적화)

  • Song, Eun-Seok;Jung, Hyung-Kyun;Hwang, Young-Seok;Hyun, Ik-Jae;Kim, Yong-Kwon;Beak, Chang-Wook
    • Proceedings of the KIEE Conference
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    • 2008.10a
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    • pp.129-130
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    • 2008
  • In this paper, optimal DRIE process conditions for fused quartz are experimentally determined by Taguchi method to develop high-performance inertial sensors based on the fused quartz material, which is known to have high Q-factors. Using Si layer as an etch mask, which was formed by previously developed bonding process of the fused quartz and Si wafer, fused quartz DRIE process was performed. Different 9 flow rate conditions of $C_4F_8$, $O_2$, He gas have been tested and the optimum combination of these factors was estimated. By this work, the ability to fabricate high aspect ratio fused quartz structure was confirmed.

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Supernumerary teeth in the mandibular incisor region associated with fused primary teeth : two case reports (유치의 융합과 연관된 하악 전치부의 과잉치 : 증례 보고)

  • Yun, Soo-mi;Ra, Ji-young;Lee, Je-woo
    • The Journal of the Korean dental association
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    • v.58 no.7
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    • pp.398-403
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    • 2020
  • Odontogenic anomalies can occur as a result of conjoining defects. These include fusion, gemination and concrescence. The presence of fused teeth can lead to various clinical problems, including the aplasia of permanent successor, the supernumerary teeth and delayed eruption of permanent teeth. In general, the supernumerary teeth associated with fusion is mainly found in the maxillary anterior region. This report describes rare cases of supernumerary tooth associated with fused teeth of mandibular primary lateral incisor and canine. In the first case, fused teeth was extracted. The supernumerary teeth was erupted at canine space. The second case is still being observed. Extraction of fused teeth and observation of supernumerary teeth is planned.

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A case of a rare fused teeth. (희유한 유합치의 일례)

  • Jeong, Tae-Yeong
    • The Journal of the Korean dental association
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    • v.4 no.1
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    • pp.41-43
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    • 1963
  • A rare case of a fused teeth on the side of upper left third molar was observed from a 28 years old Korean male. The characteristics were as follows: 1)The upper third molar fusrd with the suppernumerary tooth .2)The crown part of the fused teeth were separated and the root were fused. 3)On the x-ray finding. the pulp chamber was two , but it had only one pulp canal.

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Fiber Optic Temperature Sensor Based on the Thermal Expansion Effect of Fused Optical Fiber Coupler Fixed on a Al Support (알루미늄 지지대에 고정된 융착 광섬유 커플러의 열팽창을 이용한 온도 센서)

  • Kim, Kwang Taek
    • Journal of Sensor Science and Technology
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    • v.26 no.5
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    • pp.338-341
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    • 2017
  • We have investigated a temperature sensor on a thermal expansion effect of a fused optical fiber coupler. Both side of the fused tapered region of the coupler were fixed on a metal support to induce the high thermal expansion effect. The sensor showed that the peak coupling wavelengths were shifted to shorted wavelength region with increased of environmental temperature. The sensitivity of the sensor was $0.12nm/^{\circ}C$.