93.fm

Size: px
Start display at page:

Download "93.fm"

Transcription

1 Journal of the Korean Ceramic Society Vol. 45, No. 10, pp. 625~630, Effect of Storage Conditions on the Setting Properties of Brushite Bone Cement Containing Granular β-tricalcium Phosphate Sun-Ae Lee, Tai-Joo Chung, and Kyung-Sik Oh School of Advanced Materials Engineering, The Center for Green Materials Technology, Andong National University, Andong, , Korea (Received October 4, 2008; Revised October 15, 2008; Accepted October 16, 2008) x β- e w Brushite p y p Á k Á w œw» l ( ; ; ) ABSTRACT In the bone cement composed of dense granules of β-ca 3 (PO 4 ) 2 (β-tcp) and Ca(H 2 PO 4 ) 2 H 2 O, the compressive strength, setting time and temperature rise were measured to observe the degradation of cement with respect to the stored days before setting. Decreases of compressive strength and temperature rise were observed, while setting time increased with respect to the stored days. The similar trends were repeated with the increase of temperature of storage. Such a change virtually meant the fading of the character of cement and it took place only when the two starting materials were mixed during storage. The degradation could be mitigated taking advantage of granular β-tcp instead of powdery one. The formation of CaHPO 4, which resulted from reaction with ambient humidity, was attributed to the degradation observed during storage. Dependence of the degradation behavior on mixing and temperature during storage was discussed in terms of the driving force for reaction of cement. Key words : Bone cement, Granular β-tcp, Storage, DCPD, DCP 1. p x y yww y w. p y» ¾ w ƒ w x š ww ³ew w e w ù v p š j. p j j e w, j p ü, e p ey ƒ š. e» Apatite Brushite ù. Apatite α- Ca 3 (PO 4 ) 2, Ca 4 P 2 O 9, CaHPO 4 2H 2 O (DCPD)» y 1) y z 50~100 MPa w. 2) Brushite p β-ca 3 (PO 4 ) 2 (β-tcp) Ca(H 2 PO 4 ) 2 H 2 O (MCPM) š ƒw w 3), Corresponding author : Kyung-Sik Oh ksoh@andong.ac.kr Tel : Fax : Apatite w û 4). 5) œ ƒ w w v ƒ» š. p k y yww w wš š k, p yw š y. y ƒ p y ƒ yw e ƒ w» w. y y w w, ƒ š» y w w ƒ š. w yw e w y v w y w ƒ w ƒ. w y w Apatite p Brushite p y k,» w ƒ 6) w. w w 625

2 626 Á k Á d ƒ w ƒ. 7) w w w ü» w yw e p w v ƒ. w β-tcp p w, 8) wì mw p yƒ p ƒ wš w. e w xk w x w y w š w. 2. x Brushite p w β-tcp MCPM 6:4 yww β-tcp y ƒ k. xk β-tcp k j» 1~3 µm, š 9) xk β-tcp»œ 5% x j» 125 µm. yw» w w, 100 rpm 2 yww. yw β-tcp MCPM 100% ƒƒ 2, 7 š 14 w z y g. y w 1g p w 0.5 y 0.6 ml ƒw. ƒw p yw ƒ r p k w ƒ y. w yw k w p wì k w p w. w w ƒ 2, 7 š % w ƒ y g. w w w (stored separated) yw (stored mixed) ew. w» w w 100 ml ³ f 10 ml p w lv w. lv w w ùkü x w». w f ƒƒ 4, 30, 50 o C w z f ƒ û y w. w ƒy w ùkú y w» w. z y j» z p y w X z w. w p y sƒw» w Vicat e w, r p k y t 300 g w Vicat e 30» y ƒ x j w. p y ùkü y d w» w y y d w. d w w ¼ ƒ 1cm r w. r w z Instron 4204 w d w. w ƒ w 6 r w s³ Crosshead 0.5 mm/ m w. r w Archimedes w d w. 3. š Fig. 1 y x β-tcp w w p 50 o C w z» y w.» ƒ y w., w β-tcp k j w w. ß-TCP Fig. 1. Densities of bone cement containing either granular or powdery β-tcp after storage at 50 o C. w wz

3 x β- e w Brushite p y p 627 Fig. 2. Compressive strengths of bone cement containing either granular or powdery β-tcp after storage at 50 o C. Table 1. Setting Times of Bone Cement Containing either Granular or Powdery β-tcp after Storage at 50 o C Stored day(s) Starting Material and Way of Storage Granular β-tcp Powdery β-tcp Mixed 8 min. Failed to set 3min. Separated 3 min. 3 min. 20 sec. 3 min. 50 sec. Mixed 8 min. Failed to set 40 sec. Separated 55 sec. 1 min. 10 sec. 1 min. 40 sec. β-tcp MCPM w w y ùkü ys j. β-tcp MCPM yw w w w j ùkü, p x x β-tcp w j ƒ û. 14 w z (0 ) ù w w w 92%, yww w β- TCP w 77%, β-tcp w yw w 64% w. Fig. 2 x y x β-tcp w p 50 o C w MCPM yw» y w. Fig. 1 y w w w» ƒ w yw w ƒ j w. p x β-tcp yw w j w 2 w ƒ d. x β-tcp w 2 z ƒ w x» w 43% w wš. ù x β-tcp yww k 14 w x β-tcp w ƒ w kƒ. β-tcp MCPM w w 14 w x y x w 87% w wš. Table 1 x y x β-tcp 50 o C w» y d w. Table 1 x β-tcp w w y 40 ~1 40 w y. x β-tcp MCPM yww w y 2 8 ƒwš» 7 ƒw eü y w w. yw w y w x x β-tcp w w w. x β-tcp w w y » ƒw y. Fig o C 7 w p w y y w. Fig. 3 ƒ ƒ w w w x β-tcp yw z 200 ƒ w 10 o Cƒ w. yww w x β-tcp Table 1 r y j w ùkü. x β-tcp w yw 45«10y(2008)

4 628 Á k Á Fig. 3. Temperature rise of bone cement containing either granular or powdery β-tcp after storage at 50 o C for 7 days. Fig. 4. X-ray diffraction patterns of bone cement after storage for 7 days. The granular β-tcp was kept separated from MCPM during storage. w. yw x β-tcp ƒ y w w β-tcp Table 1 ùkü yƒ w. w w š w. 10) l 50 o C 100% w β-tcp MCPM yww» w ƒ y, y ¼ š y. w y ³ w š y k w» y X z mw w. Fig. 4 Fig. 5 x β-tcp MCPM 7 ƒƒ yw y Fig. 5. X-ray diffraction patterns of bone cement after storage for 7 days. The granular β-tcp was kept mixed with MCPM during storage. w z y k X z mw y w. Fig. 4 β-tcp MCPM w w 4, 30, š 50 o C CaHPO 4 2H 2 O (DCPD) y wš. Fig. 5 β-tcp MCPM yww w 4 o C DCPD 50 o C w DCPD wì CaHPO 4 (DCP)ƒ š 30 o C w w DCP vjƒ. š w 50 o C yw w y j» DCPƒ y w. Fig. 2 Table 1 y d l 50 o C w w y ùkü yw w j wš yƒ ù. w Fig. 4 Fig. 5 y DCPD y DCPƒ w. β-tcp MCPMƒ w DCPD w (1), (2) yw. 3) Ca 3 (PO 4 ) 2 +2Ca(H 2 PO 4 ) 2H 2 O 4CaHPO 4 2H 2 O (1) 2Ca(H 2 PO 4 ) 2H 2 O+H 2 O 2CaO + 2H 3 PO 4 (2) β-tcp (1) MCPM w DCPD w, MCPM (2) y w w. β-tcp (3) w w DCPD w. 2Ca 3 (PO 4 ) 2 +2H 3 PO 4 +6H 2 O 6CaHPO 4 2H 2 O (3) w wz

5 x β- e w Brushite p y p 629 DCPD e x (3) y œ w e x w w p p š y. DCP DCPD ƒ k DCPD e x x xk ƒ. 11) DCP DCPD w w ƒ û w 12). 13) DCPƒ yw (4) š w (3) w ú. Ca 3 (PO 4 ) 2 +H 3 PO 4 3CaHPO 4 (4) w k ƒ DCPDƒ w (3) ùkü w k DCPD w» (4) DCPƒ. (1),(2),(4) ú β-tcp MCPM yw š œ» mw»ƒ œ w ƒ (4) DCPƒ. ù w β-tcp MCPMƒ w w yw k ù, DCPƒ pƒ y q. ù w DCPƒ z y ƒw DCPD wš w w w k. w k DCPD w ƒ w y w. DCPD DCP w yw ƒ ü k ƒ y ùkù. wr Fig. 5 yw w DCP ƒ. w y β-tcp (3), (4), MCPM w (2). 14) β-tcp MCPM yw y œ MCPMƒ w β-tcp œ w., MCPM w v w ƒ ù w w y w. 50 o C w MCPM» w w wš β-tcp w MCPM w j. Fig. 3 y ƒ w» ƒ, MCPM wƒ w. wr ƒ û»ƒ MCPM w v w», β-tcp mw. β-tcp MCPM yw w»ƒ w š» ƒ w. β-tcp š MCPM w œw w y. w w. β-tcp MCPM MCPM w» β-tcp w DCPD v w w. z y ƒw Fig. 4 w 4 o C ù 30 o C 50 o C w DCPD w Fig. 2 Table 1 r y. β-tcp MCPM,,» p y w w öe β-tcp MCPM ƒ DCP w w, ƒ. ù t w d yww š w, û w, mw» ww kƒ w. Fig. 2 x x β-tcp w MCPM yw w x β-tcp w w» ƒ w. β-tcp MCPM 50 o C yw w MCPM w w dw, β-tcpƒ e w k t k w. w w MCPM ww. x β-tcp x w w û. Table 1 w x β-tcp w y w z ƒ» ¼. w Fig. 3 x β-tcp w w š r p w». 45«10y(2008)

6 630 Á k Á w. β-tcpx p y mw DCPD w y, y» w DCPƒ» p y p. w yƒ w œ» p MCPM w wš w β-tcp w DCP w» q.» ƒw ƒw, k y ƒw w y w š p p w. w w ƒ, œ» ƒ, w p w w wš w ùkù.» z w» w ƒ û v w w w w ƒ yw e w. w w e w xk w w w w. 4. β-tcp MCPM Brushitex p x β-tcp e wš w w ùkù y w w. β-tcp MCPM yww w, ƒ, š» ¼ ƒ y š y ù p p w. w p y z DCP w w, y œ»» w q. DCP w z y yww y w w w w q. β-tcp w MCPM w w» w. Acknowledgments» w. w» w ( ) e. REFERENCES 1. F. C. M. Drissens, M. G. Boltong, O. Bermudez, J. A. Planell, M. P. Ginebra, and E. Fernandez, Effective Formulations for the Preparation of Calcium Phosphate Bone Cements, J. Mater. Sci. Mater. Med., 5 [3] (1994). 2. E. Charriere, S. Terrazzoni, C. Pittet, Ph. Mordasini, M. Dutoit, J. Lemaitre, and Ph. Zysset, Mechanical Characterization of Brushite and Hydroxyapatite Cements, Biomaterials, 22 [21] (2001). 3. A. A. Mirtchi, J. Lemaitre, and N. Terao, Calcium Phosphate Cements: Study of the β-tricalicum Phosphate-Monocalcium Phosphate System, Biomaterials, 10 [7] (1989). 4. C. Pittet and J. Lemaitre, Mechanical Characterization of Brushite Cements: A Mohr Circles Approach, J. Biomed. Mater. Res: Appl. Biomat., 53 [6] (2000). 5. F. Theiss, D. Apelt, B. Brand, A. Kutter, K. Zlinksky, M. Bohner, S. Matter, C. Frei, J. A. Auer, and B. von Rechenber, Biocompatibility and Resorption of a Brushite Calcium Phosphate Cement, Biomaterials, 26 [21] (2008). 6. M Bohner, Calcium Orthophosphates in Medicine: from Ceramics to Calcium Phosphate Cements, Injury, 31:S-D (2000). 7. Private Communications with Kyungwon Medical Co. 8. S. A. Lee, T. J. Chung, K. A. Lee, H. M. Kim, and K. S. Oh, Effect of Storage Conditions Prior to Mixing of β-tcp Based Bone Cement on the Reaction Products and the Setting, Key Engineering Materials, (2008). 9. K. S. Oh, S. R. Kim, and P. Boch, Synthesis and Properties of Bone Cement Containing Dense β-tcp Granules, Key Engineering Materials, (2004). 10. K. S. Oh, H. W. Choi, and S. R. Kim, Temperature Rise and Setting of β-tcp-mcpm Bone Cement Containing Dense β-tcp Granules, Current Applied Physics, (2005). 11. X. Lu, Y. B. Wang, J. X. Wang, S. X. Qu, J. Weng, R. L. Xin, and Y. Leng, Calcium Phosphate Crystal Growth under Controlled Environment through Urea Hydrolysis, J. Cryst. Growth, (2006). 12. S. V. Dorozhkin, Calcium Orthophosphates, J. Mater. Sci., 42 [4] (2007). 13. J.G C.G Elliott,G Structure and Chemistry of the Apatites and Other Calcium Orthophosphates, pp. 6-11, Elsevier, Amsterdam, London, New York, Tokyo, M. Bohner and U. Gbureck, Thermal Reactions of Brushite Cements, J. Biomed. Mat. Res. Part.B, 84B [2] (2008). w wz

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

< 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

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

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

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

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

(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

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

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

12(4) 10.fm

12(4) 10.fm KIGAS Vol. 12, No. 4, December, 2008 (Journal of the Korean Institute of Gas) l x CNG» v m s w ½ Á y w» œw (2008 9 30, 2008 12 10, 2008 12 10 k) Numerical Analysis for Temperature Distribution and Thermal

More information

62.fm

62.fm Journal of the Korean Ceramic Society Vol. 45, No. 7, pp. 395~400, 2008. Preparation and its Characteristics of Fly Ash-based Geopolymeric Mortar using Low Grade Silica Waste Se Gu Son, Seung Yeob Hong,

More information

57.fm

57.fm Journal of the Korean Ceramic Society Vol. 45, No. 6, pp. 336~344, 2008. Rheological Properties of Cement Paste Blended Blast Furnace Slag or Fly Ash Powder Jong Taek Song, Hyo Sang Park, Seung Ho Byun,

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

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

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

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

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

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

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

( )-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

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

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

( )-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

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

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

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

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

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

<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

( )-77.fm

( )-77.fm Journal of the Korean Ceramic Society Vol. 47, No. 5, pp. 407~411, 2010. DOI:10.4191/KCERS.2010.47.5.407 Physical Properties of ALC with Various Fineness of Quartzite Yong Sik Chu, Ui Jong Jung, Hun Song,

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

13.fm

13.fm Journal of the Korean Ceramic Society Vol. 46, No. 1, pp. 58~68, 2009. Rheological Properties of Ordinary Portland Cement - Blast Furnace Slag - Fly Ash Blends Containing Ground Fly Ash Hyo Sang Park,

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

( )-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

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

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

( )-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

( )-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

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

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

75.fm

75.fm Journal of the Korean Ceramic Society Vol. 44, No. 8, pp. 451~456, 2007. A Study of Sintering Behavior and Crystallization in Li 2 O-Al 2 -SiO 2 (LAS) Glass System by RSM Kyu Ho Lee, Young Seok Kim, Young

More information

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

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

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

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

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

<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

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. vol. 29, no. 10, Oct ,,. 0.5 %.., cm mm FR4 (ε r =4.4)

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. vol. 29, no. 10, Oct ,,. 0.5 %.., cm mm FR4 (ε r =4.4) THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 2018 Oct.; 29(10), 799 804. http://dx.doi.org/10.5515/kjkiees.2018.29.10.799 ISSN 1226-3133 (Print) ISSN 2288-226X (Online) Method

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

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

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

143.fm

143.fm Journal of the Korean Ceramic Society Vol. 43, No. 1, pp. 859~864, 006. FE Analysis of Alumina Green Body Density for Pressure Compaction Process Jong-In Im and Young-Jin Yook Simulation Center for Fine

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

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

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

8(2)-4(p ).fm

8(2)-4(p ).fm w wz J. Kor. Soc. Cloth. Ind. 8«2y, 2006 Vol. 8, No. 2, pp.177-182(2006) x w e w 1) Á Ÿ 1) Á»û 2) 1) ƒm w q w 2) w w w The Effect of Media on Taking Plastic Surgery Chong-Hee Yun 1), Su-Kwang Sung 1) and

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

fm

fm Journal of the Korea Concrete Institute Vol. 24, No. 1, pp. 061~0, February, 2012 GGGGG http://dx.doi.org/10.44/jkci.2012.24.1.061 기포제종류및희석농도에따른기포콘크리트의특성 ½ 1) Á 1) Áy y 2) Á 1) * 1)œ w œw 2) œ w ywœw Properties

More information

10(3)-11.fm

10(3)-11.fm w y wz 10«3y 265~271 (2010.12.) Journal of Korean Society of Urban Environment y w w gj p ü e y y y w y Á½k * w m œw Á* w y œw (2010 9 9, 2010 12 7 k) Effect of Chloride Ion Diffusion Coefficient and Critical

More information

( )-122.fm

( )-122.fm Journal of the Korean Ceramic Society Vol. 48 No. 1 pp. 40~45 2011. DOI:10.4191/KCERS.2011.48.1.040 Approach to Compositional Effect on Properties of Aspherical Optical Glass for GMP Process with Design

More information

105.fm

105.fm Journal of the Korean Ceramic Society Vol., No. 11, pp. 633~638, 007. Resistance of Alkali Activated Slag Cement Mortar to Sulfuric Acid Attack Kyung-San Min, Seung-Heun Lee Department of Material Science

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

415.fm

415.fm Journal of the Korean Housing Association Vol. 20, No. 4, 2009 xw z œ p w A Study on the Spatial Characteristics of the Concept of Non-sedentary in Contemporary Multi-housing Planning ½ * Kim, Mi-Kyoung

More information

15(2)-07.fm

15(2)-07.fm J. Korean. Soc. Living. Environ. Sys. Vol. 15, No. 2, pp 145~154(2008) w y y w z 15 «2 y 2008 ³ l w sm ½ Á yáy * w y w, ** w w Recommended Sensitivity of a Fully-shielded Photosensor for a Daylight Dimming

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

84-01.fm

84-01.fm w y wz 8«( 4y) 00~00, 2005 J. of the Korean Society for Environmental Analysis HPLC f y e t p»wá½»x w y w»y Detection Characteristics of a HPLC Method on Carbonyl-DNPH Derivatives in Relation with Column

More information

144.fm

144.fm Journal of the Korean Ceramic Society Vol. 43, No. 12, pp. 865~871, 2006. Evaluation of Characteristics of Simulated Radioactive Vitrified Form Using Cooling Methods Kang-Taek Lee, Kyu-Ho Lee, Duk-Ki Yoon,

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

16(4)-05.fm

16(4)-05.fm w m y Vol. 16(4), p. 53~61, 2011 œ 광물찌꺼기에함유된오염물질의안정화를위한표면차폐재의성능평가 ½ ³ 1 Á 1 *Á½ 2 Á½ 2 Á 3 Á 3 1 w œ w œw, 2 ( ) f lp, 3 w Ÿw œ Ÿw» Evaluation of Surface Water-preventing Materials on Stabilization of

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

10.fm

10.fm Jurnal f the Krean Ceramic Sciety Vl., N. 1, pp. 53~57, 2009. Effect f MgB Additin n Synthesis f Hexagnal Brn Nitride Dae-Jin Lee*, **, Mi-Jung Jee*, Byung-Hyun Chi*, Mi-Jai Lee*, Nam-Hee Ch**, and Mi-Sun

More information

( )-103.fm

( )-103.fm Jurnal f the Krean Ceramic Sciety Vl. 46, N. 6, pp. 643~647, 2009. DOI:10.4191/KCERS.2009.46.6.643 Densificatin Behavir f C/C Cmpsite Derived frm Cal Tar Pitch with Small Amunt f Idine Additin Kwang Yun

More information

38(6)-01.fm

38(6)-01.fm y, 38«, 6y, 699-705, 2005 Econ. Environ. Geol., 38(6), 699-705, 2005 t sÿ y xk 1 Á s 2Á z 1 Á½ 1 Á e 3 1 w y w,» w, 2w y w, 3š w y w Chemical Speciation of Heavy Metals in Geologic Environments on the

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

14(4)-14(심고문2).fm

14(4)-14(심고문2).fm w» wz, 14«4y(2012) (ISSN 1229-5671) Korean Journal of Agricultural and Forest Meteorology, Vol. 14, No. 4, (2012), pp. 260~264 DOI: 10.5532/KJAFM.2012.14.4.260 Author(s) 2012. CC Attribution 3.0 License.

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

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

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

50(6)-04.fm

50(6)-04.fm Journal of the Korean Chemical Society 2006, Vol. 50, No. 6 Printed in the Republic of Korea m w MBL x x y p *Á yá Á Á w w yw w w yw (2006. 8. 16 ) Characteristics of Verbal Interactions AccordingG to

More information

fm

fm Journal of the Korean Ceramic Society Vol. 46, No. 2, pp. 219~22, 2009. Capacitance Aging Behavior of Acceptor-Doped BaTiO uer DC Electrical Field Dong Woo Hahn a Young Ho Han Department of Materials Engineering,

More information