16(4)-08(55).fm

Size: px
Start display at page:

Download "16(4)-08(55).fm"

Transcription

1 DOI: /KPMI ù Fe 73 yw w x q p ½ Á½ Á Á * w ù lœw Electomagnetic Wave Absoption Popeties of Fe 73 -Based Nanocystalline Soft Magnetic Powde Composite Mixed with Chacoal Powde Sun-I Kim, Mi-Rae Kim, Keun Yong Sohn and Won-Wook Pak* Depatment of Nano System Engineeing, Inje Univesity, 607 Obang-dong Gimhae, Gyungnam, Republic of Koea (Received July 3, 2009; Revised July 22, 2009; Accepted August 5, 2009) Abstact The electomagnetic wave absoption sheets wee fabicated by mixing of Fe 73 nanocystalline soft magnetic powde, chacoal powde and polyme based binde. The complex pemittivity, complex pemeability, and scatteing paamete have been measued using a netwok analyze in the fequency ange of 10 MHz~10 GHz. The esults showed that complex pemittivity of sheets was lagely dependent on the fequency and the amount of chacoal powde : The pemittivity was impoved up to 100 MHz, howeve the value was deceased above 1 GHz. The powe loss of electomagnetic wave absoption data showed almost the same tendency as the esults of complex pemittivity. Howeve, the complex pemeability was not lagely affected by the fequency, and the values wee deceased with the addition of chacoal powde. Based on the esults, it can be summaized that the addition of chacoal powde was vey effective to impove the EM wave absoption in the fequency ange of 10 MHz~1 GHz. Keywods : Electomagnetic wave absobe, FeSiBNbCu, Chacoal, Complex pemittivity 1.»» w š j» x y š, q ƒwš. w q»» w» q w j ù ü y ù s w s k [1-2].»q w ƒ» ü w œ ³ (KS) w q w t w w t w ³ wš, q ww ³ (EMI, electomagnetic inteface) l q j w q ü (EMS, electomagnetic susceptability)¾ t ³ sw k mwš.»qƒ ü e w»» w»q vw yw» w x q š t q sw. ù q s» ƒ xy ü z j»ƒ qƒ ü t q w w *Coesponding Autho : [Tel : ; 291

2 292 ½ Á½ Á Á. q sw q w q ƒ z. q,, w q y g q w. s k ù p (CNT, Cabon Nanotube), e (Cabon black), ƒw w q ƒ t w [3-6],, p, p š n w q w [7-9]. w w, w ƒ û n ƒ š, w n ƒ û ƒ. w š CNT, ƒ š [10] w šn Fe 73 Si 16 B 7 Nb 3 Cu s ƒ wš ey ƒw q p e w w w. 2. x x þƒ š Fe 73 Si 16 B 7 Nb 3 Cu 1 w, jet mill w q w z» w attition mill w y g. y 270 mesh ƒ» w 54 μm w j» w z 540 C 1 o» û šn ƒ ù w [11-12]. x ù ƒ ƒ ƒ 10 wt%~50 wt% y ball mill w 1 yww. y w yw 40% v ƒw» w 2 yww k z e q» w Ì 1 mm p w. p 100 C» o 1 e z 24 w g. p p Ì ³ w j» w 70 C o (Rolling) p Ì s³ 0.5 mm w. q p n w» w q ü 3 mm/ 7 mm ƒœw z p j ú (netwok analyze), (AgilentCo. N5230A) 2-pot coaxial w d w š, q p p ƒ ƒƒ 5 cm ƒx p j p (mico-stip line) w 10 MHz~10 GHz q S 11 S 21 d w z w sƒw. 3. x š 1 2 ù ƒw w q p q (ε =ε -jε ) p ùkü. 1 ùk ü 100 MHz ƒ ƒ ƒw ƒw ù 100 MHz ƒ w. w w w ùkü x y ƒ š» [13], 2 x w 1 GHz ¾ ƒ Fig. 1. The eal pat of complex pemittivity cuves plotted against fequency fo the Fe-based EM wave absoption sheets mixed with 10~50 wt% chacoal powde in the 10 MHz~10 GHz ange.

3 ù Fe 73 yw w x q p 293 Fig. 2. The imaginay pat of complex pemittivity cuves plotted against fequency fo the Fe-based EM wave absoption sheets mixed with 10~50 wt% chacoal powde in the 10 MHz~10 GHz ange. ƒw ù š q w x w. 100 MHz ƒ w ùk ü s x [14-15]w, ƒw. w 1 GHz š q q ƒ w j w š p š q w w p [6, 16] ùküš» ƒ. q ü ƒ ƒw pü w w ƒw q w q»»ƒ f q. 3, 4 q n (μ =μ - jμ ) ùkü, Fe ù ƒ ƒ ƒw x n w. Fe ù ƒw pü v wš n ùkü q p n w. w ƒ x n j yw ùkû. x n q ƒ w p Fig. 3. The eal pat (μ ') (a) of complex pemittivity cuves plotted against fequency fo the Fe-based EM wave absoption sheets mixed with 10~50 wt% chacoal powde in the 10 MHz~10 GHz ange. Fig. 4. The imaginay pat of complex pemittivity cuves plotted against fequency fo the Fe-based EM wave absoption sheets mixed with 10~50 wt% chacoal powde in the 10 MHz~10 GHz ange. ùkü ƒ ƒw p» w ùkü. ƒ ƒ x n j yw q. q sƒ Netwok Analyze j p S-paamete d w 5, 6 ùkü. 5 Fe ƒ ƒw ƒ ƒw ùkþ, ƒ ƒw q

4 294 ½ Á½ Á Á Fig. 5. S 11 of electomagnetic wave absoption sheets mixed with 10~50 wt% chacoal powde in the 10 MHz~10 GHz ange. Fig. 6. S 21 of electomagnetic wave absoption sheets mixed with 10~50 wt% chacoal powde in the 10 MHz~10 GHz ange. p» ƒ ƒw š p t ƒ j w tv¾ (Skin depth)ƒ ƒ w. w w w ƒw t w ƒw ü ƒ q w» w [16]. 6 ƒ ƒw 1 GHz š q p ùkû. ƒ w p q w š q j w ƒ w Fe ù Fig. 7. Powe loss cuve fo the Fe-based nanocystalline soft magnetic powde sheets mixed with 10~50 wt% chacoal powde in the 10 MHz~10 GHz ange. v n w ùkù. q S-paamete mw w, 7 ùkü. 1 GHz w q ƒ w ƒw ù, 1 GHz š q w ƒ ƒw p. x ww, 100 MHz w q n ƒ w ù j s ƒw 1 GHz w q ƒw q. w, 100 MHz q ƒz ƒ ù j ùkû. 1 GHz š q q w j w w q w. 4. Fe 73 ù ƒ 10~50 wt% ƒw xw q x.

5 ù Fe 73 yw w x q p » w q ƒ ƒw 100 MHz w q q p q j w. ù, 1 GHz q x q w j ƒ ƒ k û, q w. 2. ƒ q w š n w MHz q ƒz ƒ ù j ùkû. š x [1] Taflove, A. and Bodwin, M. E.: IEEE Tans. Micowave Theoy Tech., 23 (1975) 888. [2] Jaupat, S., Kawabata, A., Tokua, H., Bokiewicz, A.: J. Physiol Anthopol, 22 (2003) 61. [3] Abbas, S. M., Chanda, M., Vema, A., Chattejee, R., Goel, T. C.: Composites: Pat A, 37 (2006) [4] Zhihua, P., Jingcui, P., Yanfeng, P., Yangyu, O., Yantao, N.: Phys. Lett. A, 372 (2008) [5] Sangawa, V. S., Chikhalika, P. S., Dhokne, R. J., Ubale, A. U. and Mesham, S. D.: Bulletin of Mateials Science, 29 (2006) 413. [6] Moon, K. S., Choi, H. D., Lee, A. K., Cho, K. Y., Yoon, H. G. and Suh, W. S.: J. Appl. Poly. Sci., 77 (2000) [7] Yoshisa, S., Sato, M., Sugawaa, E. and Shimada, Y.: J. Appl. Phys., 85 (1999) [8] Hong, S. H., Sohn, K. Y., Pak, W. W., Nam, J. M., Moon, B. G., Song, Y. S.: J. Koean Powde Metallugy Institute, 14 (2007) 261. [9] Min, E. H., Kim, M. S., Koh, J. G.: J. Koean Magnetics Society, 17 (2007) 238. [10] Esawi, A. and Mosi, K., Composites: Pat A, 38 (2007) 646. [11] Yoshizawa, Y., Oguma, S. and Yamauchi, K.: J. Appl. Phys., 64 (1988) [12] Petzold, J.: J. Magn. Magn. Mate., 242 (2002) 84. [13] Fenske, K. and Misa, D.: Appl. Micowaves Wieless, 12 (2000) 92. [14] Davis, L. C.: J. Appl. Phys., 72 (1992) [15] Jung, J. C., Jang, Y. G. and Yoon, H. G.: The Koean Society of Industial Application, 5 (2006) 27. [16] Baba, A. A., Lambeti, G., d Amoe, M. and Acieno, D.: Poly. Bull., 57 (2006) 587. [17] Lee, K. S., Yoon, Y. C., Choi, G. B., Kim, S. S. and Lee, J. Y.: J. Koea Electomagnetic Engineeing Society, 16 (2005) 228.

한 fm

한 fm Journal of the Korean Magnetics Society, Volume 19, Number 6, December 2009 DOI: 10.4283/JKMS.2009.19.6.203 BaTi 0.5 Co 0.5 Fe 11 O 19 Mx r p Ka- q p ½ Á½ w, œw, w», 12, 361-763 (2009 8 4, 2009 9 10, 2009

More information

12.077~081(A12_이종국).fm

12.077~081(A12_이종국).fm J. of Advanced Engineering and Technology Vol. 1, No. 1 (2008) pp. 77-81 y w» e wx Á w œw Fabrication of Ceramic Batch Composition for Porcelain by Using Recycled Waste Ceramic Powder Hyun Guen Han, and

More information

< DC1A4C3A5B5BFC7E22E666D>

< DC1A4C3A5B5BFC7E22E666D> ¼ (Jeong, Jung Chae)*, ý (Kim, Yoon Soo), (Shin, Woo Young), Þ Ñ (Park, Jong Man) ò ý ƒ Ð (Korea Evaluation Institute of Industrial Technology) (Shin, Jae-Heyg) Š æ (Ministry of Knowledge Economy) 1. :

More information

16(5)-03(56).fm

16(5)-03(56).fm Journal of Korean Powder Metallurgy Institute DOI: 10.4150/KPMI.2009.16.5.316 ƒ w Fe œ w Cu wy SPS (I) I. ƒ wy y Á xá½ Á½ *Á½{ a w œw, a w» gœ Production of Fe Amorphous Powders by Gas-atomization Process

More information

untitled

untitled [ ] œwz, 21«6y(2008) J. of the Korean Society for Heat Treatment, Vol. 21, No. 6, (2008) pp. 300~306 š y w p x*, **Á **Áy y* * ** w œ w œw, w» gœ Solid State Diffusion Brazing of the Aluminum Alloy Castings

More information

14.531~539(08-037).fm

14.531~539(08-037).fm G Journal of the Korea Concrete Institute Vol. 20, No. 4, pp. 531~539, August, 2008 š x y w m š gj p { sƒ z 1) * 1) w w Evaluation of Flexural Strength for Normal and High Strength Concrete with Hooked

More information

16(5)-04(61).fm

16(5)-04(61).fm Journal of Korean Powder Metallurgy Institute DOI: 10.4150/KPMI.2009.16.5.326 ƒ w Fe œ w Cu wy SPS (II) II. w SPS p ½ *Á½ Á½{ a Á½ š b w œw, a w» gœ, b y œ Production of Fe Amorphous Powders by Gas-Atomization

More information

16(5)-06(58).fm

16(5)-06(58).fm Journal of Korean Powder Metallurgy Institute DOI: 10.4150/KPMI.2009.16.5.336 y-y w Sm-Fe w ƒ w zá *Á w»» The Effect of Excess Samarium Oxide on the PreparationG of Sm-Fe Alloy Powder by Reduction-diffusion

More information

10.063~070(B04_윤성식).fm

10.063~070(B04_윤성식).fm J. of Advanced Engineering and Technology Vol. 1, No. 1 (2008) pp. 63-70 Mg-3%Al-1%Zn w ƒœ» y Á x*á **Á Á w œw *w s l I ûer ** t Effect of Thermomechanical Treatment on Microstructure and Mechanical Properties

More information

10(3)-09.fm

10(3)-09.fm w y wz 10«3y 253~258 (2010.12.) Journal of Korean Society of Urban Environment ³ w Á» Á Á y w y œw (2010 11 22, 2010 12 9 k) Study on Determine of Detention Pond in Small Developed Area In-Soo Chang ½

More information

304.fm

304.fm Journal of the Korean Housing Association Vol. 20, No. 3, 2009 yw s w - û - A Study on the Planning of Improved-Hanok - Focused on Jeon-Nam Province - y* ** z*** **** Kang, Man-Ho Lee, Woo-Won Jeong, Hun

More information

10(3)-12.fm

10(3)-12.fm w y wz 10«3y 273~280 (2010.12.) Journal of Korean Society of Urban Environment p yá xá½k w y œw (2010 9 15, 2010 12 2 k) Analysis of Characteristics of Delivered Nonpoint Source Pollution at Forested Watershed

More information

11(5)-12(09-10)p fm

11(5)-12(09-10)p fm w wz J. Kor. Soc. Cloth. Ind. 11«5y, 2009 Vol. 11, No. 5, pp.799-807(2009) w w * k ƒm w pg p w, ƒm w q w A Qualitative Research on Pursuing Image and Appearance Management Behavior of Brides Eun-Joo Bae

More information

605.fm

605.fm Journal of the Korean Housing Association Vol. 19, No. 6, 2008 y k y p w sƒ Care-giver s Needs and Evaluation on the Actual Condition of the Playgrounds in Child Care Facilities y* Choi, Mock-Wha x **

More information

10(3)-02.fm

10(3)-02.fm w y wz 10«3y 203~211 (2010.12.) Journal of Korean Society of Urban Environment w ù p yá k«áyw *Á xá½k w y œw Á* y w (2010 9 15, 2010 12 2 k) Characterization of Nonpoint Source Pollutant Loads from the

More information

416.fm

416.fm Journal of the Korean Housing Association Vol. 20, No. 4, 2009 œ qp œ y An Analysis of Change on the Apartment Unit Plans and the Interior Spaces Related to Women * Choi, ByungSook ** Park, JungA "CTUSBDU

More information

19(1) 02.fm

19(1) 02.fm Korean J. Crystallography Vol. 19, No. 1, pp.7~13, 2008 Ÿ (ICISS) w š t w (2): t w y w œw Surface Structure Analysis of Solids by Impact Collision Ion Scattering Spectroscopy (2): Atomic Structure of Semiconductor

More information

17.393~400(11-033).fm

17.393~400(11-033).fm Journal of the Korea Concrete Institute Vol. 23, No. 3, pp. 393~400, June, 2011 GGGGG DOI 10.4334/JKCI.2011.23.3.393 x RC { sƒ y y 1) *Á½ 1) Á 2) 1) y w œw 2) w œw Bond Strength Evaluation of RC Beams

More information

10(3)-10.fm

10(3)-10.fm w y wz 10«3y 259~264 (2010.12.) Journal of Korean Society of Urban Environment w gj p p y Á Á½k * w m œw Á* w y œw (2010 9 28, 2010 10 12 k) Characteristics of Antiwashout Underwater Concrete for Reduction

More information

41(6)-09(김창일).fm

41(6)-09(김창일).fm 269 Ar v Na 0.5 K 0.5 NbO 3 t ½ t,, ½ w,, ½ w»œw Surface Reaction of Na 0.5 K 0.5 NbO 3 Thin Films in Inductively Coupled Ar Plasma w t œwz J. Kor. Inst. Surf. Eng. Vol. 41, No. 6, 2008. < > Dong-Pyo Kim,

More information

69-1(p.1-27).fm

69-1(p.1-27).fm 99 A 380 B 787 : wœ z w * w w wœ» A380 B787 wœ» w. wœ» ww r. w wœ» p j y w r» w. I. II. z III. A380 B787 IV. A380 V. wœ» : x VI. z VII. I. A380 B787»ƒ z wœ w, w w p j w w ƒ r. t wœ w ƒ w w wœ» š œm wš,

More information

untitled

untitled ª Œª Œ 27ƒ 2B Á 2007 3œ pp. 193 ~ 199 ª ƒ w d w ƒ sƒ Methodology of Drought Assessment Using National Groundwater Monitoring Network Data «x Á½ Kwon, Hyung JoongÁKim, Seong Joon Abstract The objective

More information

82-01.fm

82-01.fm w y wz 8«( 2y) 57~61, 2005 J. of the Korean Society for Environmental Analysis p w w Á Á w w» y l Analysis of Influence Factors and Corrosion Characteristics of Water-pipe in Potable Water System Jae Seong

More information

fm

fm [ ] w wz DOI: 10.3740/MRSK.2009.19.12.692 Kor. J. Mater. Res. Vol. 19, No. 12 (2009) y INCONEL 718w Gas Tungsten Arc Welding» p sƒ ½»y Á *Á *Á y** ( ) d lj p wœq, *w wœ» q **( ) d lj p t Mechanical Properties

More information

3.fm

3.fm Journal of the Korean Ceramic Society Vol. 44, No. 1, pp. 12~17, 2007. A Study on the Preparation of Bone Ash and Celadon Bone Body Using Pig Bone Jae-Jin Jeong, Sang-Hee Lee, Yong-Seok Lee,* and Byung-Ha

More information

(163번 이희수).fm

(163번 이희수).fm Journal of the Korean Ceramic Society Vol. 48, No. 4, pp. 323~327, 2011. DOI:10.4191/KCERS.2011.48.4.323 Electrical Properties and Temperature Stability of Dysprosium and Erbium Co-doped Barium Titanate

More information

03.fm

03.fm 29«6y (2009. 12) w œwz 257 š³ š p e ³ w y Á Á½ y *Á **Á y w» w w e lg Effects of Si and Mo on the Temperature-Dependent Properties of High Si High Mo Ductile Cast Irons Kyeong-Hwan Choe, Sang-Mok Lee,

More information

82.fm

82.fm Journal of the Korean Ceramic Society Vol. 44, No. 9, pp. 524~528, 2007. Determination of Critical Chloride Content of Ordinary Portland Cement Concrete by Linear Polarization Technique Hong-Sam Kim, Hai-Moon

More information

DBPIA-NURIMEDIA

DBPIA-NURIMEDIA Printed in the Republic of Korea "/"-:5*$"- 4$*&/$& 5&$)/0-0(: Vol. 18, No. 5, 425-430, 2005» 677*4 Ÿ w sƒ ½»x Á Á½ k w y w, w y œw Some considerations for the analytical approaches to measure atmospheric

More information

50(1)-09.fm

50(1)-09.fm 2006, Vol. 50, No. 1 Printed in the Republic of Korea 언빨래가마르는현상에대한중등학교화학전공교사들의인식조사 ½x Á» Á½ # Á x* w w yw y š w w # w w (2005. 5. 11 ) A Research of Secondary School Chemistry Major Teachers Perceptions

More information

18211.fm

18211.fm J. of the Korean Sensors Society Vol. 18, No. 2 (2009) pp. 168 172 p k ù p p l xá xá ³ Á *Á w * Fabrication of the CNT-FET biosensors with a double-gate structure Byunghyun Cho, Byounghyun Lim, Jang-Kyoo

More information

14.fm

14.fm Journal of the Korean Ceramic Society Vol. 44, No. 2, pp. 93~97, 2007. Preparation of High Purity Si Powder by SHS Chang Yun Shin, Hyun Hong Min, Ki Seok Yun, and Chang Whan Won Engineering Research Center

More information

64.fm

64.fm Journal of the Korean Ceramic Society Vol. 44, No. 7, pp. 375~380, 2007. Tribological Properties of Carbon Layers Produced by High Temperature Chlorination in Comparison with DLC Coating Hyun-Ju Choi,

More information

<30332DB9E8B0E6BCAE2E666D>

<30332DB9E8B0E6BCAE2E666D> kœw» y w k p y w k» z wš ye z w mdkqvqrg üœ» y» Ÿ w kœwgeqgpikpggtkpiy glj GEQVGEJPQNQI[ œw w k w yz š y j œ w m w y ˆ mw y» kœ w k û ³ y ƒ ƒ» ƒ w œw w w y ƒƒ» k z w» %NGCP 9CVGT #EV wšw y ù» œ w w w t

More information

fm

fm Journal of the Korea Concrete Institute Vol. 24, No. 1, pp. 079~086, February, 2012 GGGGG http://dx.doi.org/10.4334/jkci.2012.24.1.079 섬유보강콘크리트에묻힌 GFRP 보강근의부착거동에대한섬유영향평가 1) Á½ 1) Á 2) Á 1) * 1) ³ w y lœw

More information

07.051~058(345).fm

07.051~058(345).fm w wz 8«3y 2008 6 pp. 51 ~ 58 m qp yp š w k sƒ Evaluation of Dynamic Modulus based on Aged Asphalt Binder y*á **Á***Á**** Lee, Kwan-HoÁCho, Kyung-RaeÁLee, Byung-SikÁSong, Yong-Seon Abstract Development

More information

12(3) 10.fm

12(3) 10.fm KIGAS Vol. 12, No. 3, September, 2008 (Journal of the Korean Institute of Gas) ü LP ƒ š Database w š Á Á½z w ywœw (2008 6 10, 2008 8 12 (1 ), 2008 9 5 (2 ), 2008 9 5 k) Constructing a Database Structure

More information

15.101~109(174-하천방재).fm

15.101~109(174-하천방재).fm w wz 8«4y 2008 8 pp. 101 ~ 109 w» m -,, - A Study on Warnning Criteria Investigation of Automated Rainfall Warning System -Focused on Realationship of Water Level, Discharge and Precipitation - Á Á Á Ahn,

More information

16(2)-7(p ).fm

16(2)-7(p ).fm w wz 16«2y Kor. J. Clin. Pharm., Vol. 16, No. 2. 2006 ü t xy y w tœ ½ BÁ x BC B y w w w C y w w w Current Status and Expectations of Orphan Drugs in Korea -In point of supplying medicines for the rare

More information

32(4B)-04(7455).fm

32(4B)-04(7455).fm 32«4ByÁ 2012 7 pp. 233 ~ 242 œ w w w y œ r Estimation of Domestic Water Supply Benefit Using Demand Function Approach ³ Á Á½¼yÁ Yeo, Kyu DongÁYi, Choong SungÁKim, Gil HoÁLee, Sang Won Abstract In the past,

More information

07.045~051(D04_신상욱).fm

07.045~051(D04_신상욱).fm J. of Advanced Engineering and Technology Vol. 1, No. 1 (2008) pp. 45-51 f m s p» w Á xá zá Ÿ Á w m œw Image Retrieval Based on Gray Scale Histogram Refinement and Horizontal Edge Features Sang-Uk Shin,

More information

w w l v e p ƒ ü x mw sƒw. ü w v e p p ƒ w ƒ w š (½kz, 2005; ½xy, 2007). ù w l w gv ¾ y w ww.» w v e p p ƒ(½kz, 2008a; ½kz, 2008b) gv w x w x, w mw gv

w w l v e p ƒ ü x mw sƒw. ü w v e p p ƒ w ƒ w š (½kz, 2005; ½xy, 2007). ù w l w gv ¾ y w ww.» w v e p p ƒ(½kz, 2008a; ½kz, 2008b) gv w x w x, w mw gv ª Œª Œ 30ƒ 5A Á 2010 9œ pp. 475 ~ 484 gj p ª v e p p PSC ƒ gv : II. x w Precast Concrete Copings for Precast Segmental PSC Bridge Columns : II. Experiments and Analyses ½kzÁ½ Á zá x Kim, Tae-HoonÁKim,

More information

04-46(1)-06(조현태).fm

04-46(1)-06(조현태).fm w œwz, 46«1y 2009 Textile Science and Engineering Vol. 46, No. 1, 2009 ù 2'6 wx xk Á «w œ w» Áq œw k 1PG $CVJ1PG 5VGR &[GKPI H 0[NP2'6 5RNKV 6[RG /KETHKDGT *[GP 6CG %J CPF%JWN-YP2CTM &GRCTVOGPV H 1TICPKE

More information

26(2)-04(손정국).fm

26(2)-04(손정국).fm Ñ s k w 1Á y 2 Á û 1 Á½ z 1 Á½ 1* 1 ³ w yw, 2 w» (*E-mail: jimankim@skku.edu) 1. m ƒ w»» w 4»» y š. w 4»» l, l, l w» w» k. w»» { ƒ j. x š x w ƒwš k (Direct Methanol Fuel Cell: DMFC)[1]ƒ wù ƒ w š. DMFC

More information

51(4)-13.fm

51(4)-13.fm Journal of the Korean Chemical Society 2007, Vol. 51, No. 4 Printed in the Republic of Korea w x - w y *Á š w w w yw (2007. 3. 28 ) Case Study on Verbal Interactions of Teacher-Small Group StudentsG in

More information

fm

fm [ ] w wz Kor. J. Mater. Res. Vol. 17, No. 3 (2007) Sn-3.0 Ag-0.5 Cu/OSP 무연솔더접합계면의접합강도변화에따른전자부품열충격싸이클최적화 y Á½{ *Á Á½Ÿ * t sƒ l *w wœ w wœ œw Thermal Shock Cycles Optimization of Sn-3.0 Ag-0.5 Cu/OSP Solder

More information

10(1)-08.fm

10(1)-08.fm w y wz 10«( 1y) 47~52, 2007 J. of the Korean Society for Environmental Analysis œ w t y ½ xá Á x Á½ Á x* Ÿ œ, * w œw Optimization of Coagulation In The Conventional Water Treatment Plant Jun-Hyun Kim,

More information

16(1)-3(국문)(p.40-45).fm

16(1)-3(국문)(p.40-45).fm w wz 16«1y Kor. J. Clin. Pharm., Vol. 16, No. 1. 2006 x w$btf3fqpsu'psn û w m w Department of Statistics, Chonnam National University Eunsik Park College of Natural Sciences, Chonnam National University

More information

93.fm

93.fm Journal of the Korean Ceramic Society Vol. 45, No. 10, pp. 625~630, 2008. Effect of Storage Conditions on the Setting Properties of Brushite Bone Cement Containing Granular β-tricalcium Phosphate Sun-Ae

More information

50(5)-07.fm

50(5)-07.fm Printed in the Republic of Korea w 3w yû x w w w Á x* w w w yw (2006. 3. 14 ) A research of the Difference in Teaching Styles and Understanding of 9 th Grade Students About Lead-iodide Precipitation Reaction

More information

18(3)-10(33).fm

18(3)-10(33).fm Journal of Korean Powder Metallurgy Institute Vol 18 No 3 011 DOI: 10150/KPMI01118383 e x 5Mg(OH) MgSO 3H O x w MgO NH OH w a báv y aá½xk aá½ aá½ cá½ bá½ a * aw» l bš w œw ck Effect of MgO and NH OH on

More information

( )-113.fm

( )-113.fm Journal of the Korean Ceramic Society Vol. 46, No. 6, pp. 657~661, 009. DOI:10.4191/KCERS.009.46.6.657 Rheological Properties of Cement Pastes Blended Finex-Slag Powder Keun Jae Lee, Seung Ho Byun, and

More information

83.fm

83.fm Journal of the Korean Ceramic Society Vol. 44, No. 9, pp. 483~488, 2007. The Influence of on the Clinker Mineral Composition and Cement Quality Tae-Hyoung Eom, Won-Seok Kim, Chang-Bum Kim, Byeong-Yong

More information

15.fm

15.fm Journal of the Korean Ceramic Society Vol. 44, No. 2, pp. 98~102, 2007. Effect of Recycling Time on Stability of Colloidal Silica Slurry and Removal Rate in Silicon Wafer Polishing Eun-Suck Choi and So-Ik

More information

한 fm

한 fm Journal of the Korean Magnetics Society, Volume 20, Number 1, February 2010 DOI: 10.4283/JKMS.2010.20.1.18 Vector Network Analyzer w Py œ yáw Á½ yá * w w w, û x 253, 402-751 (2009 19, 2009 12 16, 2009

More information

23(2) 71.fm

23(2) 71.fm J. of Korean Institute of Fire Sci. & Eng. [ ] Vol. 23, No. 2, 2009 w w w w w w Stud on the Fire Behaviour of Composite Beam with Loading and Unloading ½ *Á û**á½ ***Á½ Sung-Bae Kim* Chang-Nam Lee** Woo-Chul

More information

( )-94.fm

( )-94.fm Journal of the Korean Ceramic Society Vol. 47, No. 6, pp. 566~571, 2010. DOI:10.4191/KCERS.2010.47.6.566 Effect of Dispersion on Tape Casted Green Sheet Prepared from Bimodal-Type AlN Powders Hong-Soo

More information

50(4)-10.fm

50(4)-10.fm 2006, Vol. 50, No. 4 Printed in the Republic of Korea 칼코겐이도핑된망간산화물의저온합성연구 k Á z Á, *Áy, * y w ù w yw x ù l w» ww (2006. 7. 13 ) Chimie Douce Synthesis of Chalcogen-Doped Manganese Oxides Seung Tae Lim,GDae

More information

85.fm

85.fm Jurnal f the Krean Ceramic Sciety Vl. 44, N. 9, pp. 502~509, 2007. Examinatin n Applicatin f High-Perfrmance Cncrete using Fine Fly Ash as Replacement Material f Silica Fume Bum-Sik Lee, Sang-Kyu Kim,

More information

, 66~67dB»e 55dB š 12dBù û»e(65db) w 70~71dB ñ. ù ü»» 35dB(ü), 45dB() r. w» w 1938 œk ³Ø w, 1960 Ø, 1968 ³Ø w. w 1972 ³Ø w w ³ ƒwš, ù y Ø w ³w

, 66~67dB»e 55dB š 12dBù û»e(65db) w 70~71dB ñ. ù ü»» 35dB(ü), 45dB() r. w» w 1938 œk ³Ø w, 1960 Ø, 1968 ³Ø w. w 1972 ³Ø w w ³ ƒwš, ù y Ø w ³w ª Œª Œ 26ƒ 1D Á 2006 1œ pp. 1~11 ª qp md w An Analysis of the Traffic Noise Measurement Plans of Apartment Complexes A Case on the North Riverside Expressway in Seoul Á Kang, Jun MoÁLee, Sung Kyung Abstract

More information

14(4) 09.fm

14(4) 09.fm J. Korean. Soc. Living. Environ. Sys. Vol. 14, No. 4, pp 343~350(2007) w y y w z 14 «4 y 2007 yw» l s p»xá ³ *w w w œw, **w w w The Property of Pressure Distribution of Hybrid Underfloor Air Distribution

More information

11(1)-15.fm

11(1)-15.fm w y wz 11«1y 73~80 (2011.8.) Journal of Korean Society of Urban Environment SWMM 을이용한도시지역비점오염부하저류시설용량산정 Áw«Á *Áy **Á½ yá½ Á x w w Á* û w y œw Á** w y lœw (2011 6 13, 2011 6 27 k) Determine Capacity of

More information

27(5A)-07(5806).fm

27(5A)-07(5806).fm ª Œª Œ 27ƒ 5A Á 2007 9œ pp. 753 ~ 758 gj pœw gj p { x A New Test Method for Pure Isotropic Flexural Tensile Strength of Concretes Ÿ Á y Á x Zi, GoangseupÁOh, HongseobÁChoi, Jinhyek Abstract Proposed is

More information

(2)-02(최경자).fm

(2)-02(최경자).fm Res. Plant Dis. 16(2) : 148-152 (2010) Research in Plant Disease The Korean Society of Plant Pathology z w t w sƒ Á½ Á Á yá * w yw yw l Development of Effective Screening Method and Evaluation of Radish

More information

17(3)-00(282).fm

17(3)-00(282).fm w ywz 17«3y(2012)/ 1 PPS l yw p le * Á * Áh s * Áfld ** Comparison of Nano-particle Emission Characteristics in CI Engine with Various Biodiesel Blending Rates by using PPS System J. W. Kwon, M. S. Kim,

More information

( )-101.fm

( )-101.fm Journal of the Korean Ceramic Society Vol. 47, No. 6, pp. 503~508, 2010. DOI:10.4191/KCERS.2010.47.6.503 The High Density Sintering of Green-emitting -SiAlON:Eu Ceramic Plate Phosphor Young-Jo Park, Sung-Hoon

More information

83-07.fm

83-07.fm w y wz 8«( 3y) 137~142, 2005 J. of the Korean Society for Environmental Analysis sw n w Polychlorinated Biphenyls»y Áwx Á yá w w yw Analysis of Polychlorinated Biphenyls from Pohang and Gangseo, Busan

More information

18103.fm

18103.fm J. of the Korean Sensors Society Vol. 18, No. 1 (009) pp. 8 3 VO w PCM yá Á Á Ÿ Built-in protection circuit module by using VO temperature sensors K. H. Song, J. B. Choi, M. W. Son, and K. S. Yoo Abstract

More information

한 fm

한 fm Journal of the Korean Magnetics Society, Volume 19, Number 5, October 2009 DOI: 10.4283/JKMS.2009.19.5.186 Cd 1 x Mn x» Ÿw p y zá yá w w, û 29, 680-749 (2009 7 23, 2009 9 28, 2009 9 30 y ) Bridgman Cd

More information

한 fm

한 fm Journal of the Korean Magnetics Society, Volume 19, Number 4, August 2009 r g p p Áy Á 1 w w œw,, 220-702 2 w w w w œw, 220-702 3 w w w w, 140-742 (2009 7 13, 2009 8 21, 2009 8 21 y ) w g (Corning glass)/ta(5

More information

87.fm

87.fm Journal of the Korean Ceramic Society Vol. 44, No. 9, pp. 489~495, 2007. Physical Properties of Ultrafine Ash Blended Cement Dong-Woo Yoo, Seung-Ho Byun, and Jong-Taek Song Department of New Materials

More information

202.fm

202.fm Journal of the Korean Housing Association Vol. 19, No. 2, 2008 w w w w Physical Identities of Bukchon Hanok Area Viewed from Literary Geography * Park, Cheol-Soo "CTUSBDU This study explores the beneficial

More information

31(3B)-07(7055).fm

31(3B)-07(7055).fm ª Œª Œ 31ƒ 3B Á 2011 5œ pp. 265 ~ 276 ª w w s³ The Correlation Between the Moving Average of Precipitation and Groundwater Level in Korea Á½û» Yang, Jeong-SeokÁKim, Nam-Ki Abstract Precipitation data and

More information

43(5)-1.fm

43(5)-1.fm w œwz, 43«5y 2006 Textile Science and Engineering Vol. 43, No. 5, 2006 용융블렌드를이용한 PLA/PEG 블록공중합체의제조 Á w œw k Preparation of PLA/PEG Block Copolymer via Melt Blend %JGQN 5QQ ;QQP CPF &QPI 5WP,K 8q g yq r

More information

89.fm

89.fm Journal of the Korean Ceramic Society Vol. 44, No. 9, pp. 510~516, 007. Consideration of Alkali-Silica Reaction of Mortar Containing Glass Abrasive Sludge Seung-Heun Lee, Hae-Jeong Hwang, Seung-Tae Lee,*

More information

17(1)-08(06).fm

17(1)-08(06).fm Journal of Korean Powder Metallurgy Institute DOI: 10.4150/KPMI.2010.17.1.052 š p x œ w Al jy p sƒ xá a Á Á½x * swœ w œw, a x HYSCO» Microstructure and Mechanical Behavior of Ultrafine Grained Bulk Al

More information

<30312DC0CCC7E2B9FC2E666D>

<30312DC0CCC7E2B9FC2E666D> 균류의다양성과역할 이향범 û w œw 머리말 k w š ³ q š yw < Ð >» w ww k w w v š q w Á Á w tyw š 2QKPVKPI CPF *[FG ú ƒ x %QPXGPVKQP QP $KQNQIKECN &KXGTUKV[ %$&» w w ««wš y w» š x ƒ w œ ƒ» ƒ œsw w ³ wš ù š y š ƒ t š ƒ wš»ƒ

More information

( )-123.fm

( )-123.fm Journal of the Korean Ceramic Society Vol. 48, No. 1, pp. 63~68, 2011. DOI:10.4191/KCERS.2011.48.1.063 Effects of Substituting B 2 O 3 for P 2 O 5 on the Structure and Properties of SnO-P 2 O 5 Glass Systems

More information

9(3)-4(p ).fm

9(3)-4(p ).fm w wz J. Kor. Soc. Cloth. Ind. 9«3y, 2007 Vol. 9, No. 3, pp.319-326(2007) w xk x p w q w Analysis of Foot Characteristics According to the Classification of Foot Types of Junior High School Girls Ji-Young

More information

fm

fm Journal of the Korea Concrete Institute Vol. 24, No. 1, pp. 015~023, February, 2012 GGGGG http://dx.doi.org/10.4334/jkci.2012.24.1.015 인장증강효과에기반한콘크리트구조부재의사용성능검증» 1) Á½ 2) Á½ 2) Á y 3) * 1) w m 2) û w m

More information

( )-83.fm

( )-83.fm Journal of the Korean Ceramic Society Vol. 8, No. 1, pp. 0~5, 011. DOI:10.191/KCERS.011.8.1.00 Solidification of Heavy Metal Ions Using Magnesia-phosphate Cement HunG Choi, Hyun Ju Kang, Myung Shin Song,

More information

( )45.fm

( )45.fm Journal of the Korean Ceramic Society Vol. 46, No. 3, pp. 295~300, 2009. DOI:10.4191/KCERS.2009.46.3.295 Analysis of Oxide Coatings Formed on Al1050 Alloy by Plasma Electrolytic Oxidation Bae-Yeon Kim,

More information

untitled

untitled G Journal of the Korea Concrete Institute Vol. 20, No. 3, pp. 345~356, June, 2008 p -k w gj p k k 1) Á y 2) * 1) ƒm w w 2) w w Direct Inelastic Design of Reinforced Concrete Members Using Strut-and-Tie

More information

4.fm

4.fm Journal of the Korean Ceramic Society Vol. 46, No. 1, pp. 30~34, 2009. Optimization of Glass Wafer Dicing Process using Sand Blast Won Seo, Young-mo Koo*, Jae-Woong Ko**, and Gusung Kim Department of Electronic

More information

8(3)-15(p ).fm

8(3)-15(p ).fm w wz J. Kor. Soc. Cloth. Ind. 8«3y, 2006 Vol. 8, No. 3, pp.357-362(2006) w p k sƒ ½ Á Á w w w A Study on the Mechanical and Hand Properties of the Lining Fabrics Myung-Ok Kim, Mi-Kyung Uh and Myung-Ja

More information

17(4)-04(41).fm

17(4)-04(41).fm Journal of Korean Powder Metallurgy Institute Vol. 17, No. 4, 2010 DOI: 10.4150/KPMI.2010.17.4.281 w k v ƒ Ÿ y Ÿ p sƒ Á a * w» l œw, a ( ) lj qj, ù t» Preparation of C Doped Photocatalyst Activating to

More information

12(2)-04.fm

12(2)-04.fm J. Korean. Soc. Living. Environ. Sys. Vol. 12, No. 2, pp 106~111(2005) w y y w z œ k üœ» p ½ Á Á Á ³ Á Á½Ÿ w w w, *g», ** w w Effects of Strategies to Improve Indoor Air Quality at Pre-occupancy Stage

More information

84-07.fm

84-07.fm w y wz 8«( 4y) 00~00, 2005 J. of the Korean Society for Environmental Analysis CWPO œ w 1,4- s Á Á * û y, * w yœ lœw 1,4-Dioxane Treatment using Catalytic Wet Peroxide Oxidation Process Jong-min Kang,

More information

49(6)-06.fm

49(6)-06.fm Journal of the Korean Chemical Society 2005, Vol. 49, No. 6 Printed in the Republic of Korea 중학교과학교과서불꽃반응실험에서선스펙트럼관찰의문제점분석및개선연구 ½ Á Á * w w yw (2005. 10. 4 ) An Analysis and Improvement of the Line Spectrum

More information

( )-84.fm

( )-84.fm Jurnal f the Krean Ceramic Sciety Vl. 7, N. 6, pp. 608~61, 010. DOI:10.191/KCERS.010.7.6.608 Synthesis and Characterizatin f Al-dped Uvarvite Green Pigments Sung-Gyu Se and Byung-Ha Lee Department f Materials

More information

untitled

untitled 6ƒ 3A Á 006 5œ pp. 497 ~ 5 ª sƒ w k w w Improved Modal Pushover Analysis of Multi-span Continuous Bridge Structures z Áy Á½ Kwak, Hyo-GyoungÁHong, Seong JinÁKim, Young Sang Abstract In this paper, a simple

More information

14(2) 02.fm

14(2) 02.fm J. Korean. Soc. Living. Environ. Sys. Vol. 14, No. 2, pp 117~125(2007) w y y w z sm Ÿ š w œ l ³Á½ * w, **w w w Impact of Photosensor Sensitivity on the Control Performance of a Daylight Dimming System

More information

16(6)-06(08(77)).fm

16(6)-06(08(77)).fm Journal of Korean Powder Metallurgy Institute DOI: 104150/KPMI2009166416 š / g e w p» p a,b Á y b Áy x a, * a KAIST œw, b ( )» Interfacial Characteristics and Mechanical Properties of HPHT Sintered Diamond/SiC

More information

27(5A)-13(5735).fm

27(5A)-13(5735).fm 27ƒ 5A Á 2007 9œ pp. 735 ~ 743 gj p ª w š p w { ³ p Flexural Behavior and Cracking Characteristics of High Performance Fiber Reinforced Cementitious Composites according to Fine Aggregate Contents *Á ³x**

More information

51(2)-09.fm

51(2)-09.fm 2007, Vol. 51, No. 2 Printed in the Republic of Korea xw yw w w» e w z Á Á y Áw # Á k * w yw w w w w w # w w w (2006. 10. 30 ) Influences of Current Education Programs for Preservice Chemistry Teachers

More information

25(6)-12(조윤아).fm

25(6)-12(조윤아).fm Printed in the Republic of Korea "/"-:5*$"- 4$*&/$& 5&$)/0-0(: Vol. 25, No. 6, 416-420, 2012 http://dx.doi.org/10.5806/ast.2012.25.6.416 Characteristics of heavy metals's exposure from playground flooring

More information

26(3D)-17.fm

26(3D)-17.fm 26ƒ 3D Á 2006 5œ pp. ~ ª y w qp yw k d Predictive Equation of Dynamic Modulus for Hot Mix Asphalt with Granite Aggregates yá½x Á Lee, Kwan-HoÁKim, Hyun-OÁJang, Min-Seok Abstract The presented work provided

More information

83-06.fm

83-06.fm w y wz 8«( 3y 143~153, 005 J. of the Korean Socety for Envronmental nalyss x yá Á Áyk Áy Á wá½ *Á ** y œ, *w x, **w t w Preparaton of Fly sh for Profcency Testng of Doxn nalyss Dongho Moon, Sangwon Lee,

More information

50(6)-09.fm

50(6)-09.fm Journal of the Korean Chemical Society 6, Vol. 5, No. 6 Printed in the Republic of Korea w Polyacrylamide y ½ û * w yw (6. 9. 1 Thixotropic Properties of Polyacrylamide Hydrogels with Various Synthetic

More information