02.33~37.fm

Size: px
Start display at page:

Download "02.33~37.fm"

Transcription

1 KOREAN JOURNAL OF PACKAGING SCIENCE & TECHNOLOGY Vl. 17, N. 33~37 (011) q t s ü CO d w ½y» 1 Á 1 Áx Á 1, 1 ûw tw mœw Cntrl f Micrbial Shelf Life f Perishable Fd by Real-Time Mnitring f CO Cncentratin f its Package Hwan Ki Kim 1, Duck Sn An 1, Hyuk Jae Lee and Dng Sun Lee 1, 1 Department f Fd Science and Bitechnlgy Department f Infrmatin and Cmmunicatin Engineering, Kyungnam University, Changwn, Krea "CTUSBDU Real time cntrl lgic f micrbial shelf life f a perishable fd, seasned prk meat has been frmulated which explits mnitring f CO cncentratin f the package. The ptential f the prpsed lgic was examined fr strage at dynamic temperature cnditins. The start f increase in CO prductin rate frm the fd r rate f package CO cncentratin change was fund t cincide with the pint f micrbial quality limit and culd be used as an index f micrbial shelf life determinatin. This als crrespnded t lag time f CO cncentratin change r time fr the CO cncentratin t reach a certain value. The applicatin ptential f the prpsed lgic was cnfirmed fr a sensr system t measure n real time and transmit the CO cncentratin wireless t the cmputer system.,fzxpset Micrbial spilage, Shelf life, Package atmsphere, Real time mnitring, Carbn dixide y y ù š ù t ƒœs þ mš. t ù w r ƒ, q» p ƒ. þt ƒ ƒ, þ m qƒ w. wš, ƒ w xš. w t w m ƒ ƒ w. Crrespnding Authr : Dng Sun Lee Department f Fd Science and Bitechnlgy, Kyungnam University, 449 Wryeng-dng, Changwn, Krea <dngsun@kyungnam.ac.kr> q þt qƒ tš, dù d w 1,). w dwù dw š y ƒ». w ty y w w, y w ƒ wù t dw. w w» w, w t ty d w wš w ƒ. wù y», m w w (time-temperature indicatr, TTI) 3). q j w my» s w š, w fw, þt ty yw w

2 34 ½y»ÁÁxÁ w swz TTI. TTIƒ w t ty txw w TTI wš œw. š TTI y s y t t w» t t ƒ wù w. t»w w wù q s headspace w 4). wì s ü { ù» y ùkü wù q dw w ƒ ƒw. {» wù CO q wì sü, q š 5-7). w CO s» y p qw, y ty d w ƒ. t q þt wù š» w s CO y dw sensr l wš, w ƒ mw. 1. š» Ready-t-ck xk š» 1 kg š» 34 g (Chengjengwn, Chenan, Krea) y w 6 C w w. š» 1,000 ml ( 7.5 cm, 16.5 cm) wš screw cap w.. CO d sensr l q t s CO dw sensr l w» w ƒ ƒw sensr mw Table 1 8,9). Fiber ptic sensr s ew» w rw x š w yƒ 10). š y š CO d š þt s». s ü ew CO yw (nndispersive infrared, NDIR) ƒ w q. x dƒ 0,000 ppm(%)ü þ q t w w ƒ. Ÿw x w NDIR dƒ K33(SenseAir, Delsb, Sweden)ƒ d ƒ w ùkù w. K33 RFID tag w m ts w prttype d l Fig. 1 w. s ü RFID tag CO y dw l wš w l w. K33 sensr mw d l y ¼» w( 1km), UART x RS485 y RS485 cnverter z w yw. š main chipset MCU (ARM 3bit 7MHz) m l ww. w l w ZigBee (Xbee Pr 1km m,.4 GHz, bps) mw l w. d» ZigBee mdule w w Table 1. Types f CO sensrs t be ptentially used fr fd packaging Type Sensing principle Advantages Disadvantages Cmmercial examples Nndispersive infrared detectr (NDIR) Fiber ptics Metal xide Energy absrptin f CO in infrared wavelength Changes in ptical prperties f film layer at the tip f a fiber respnding t CO Cnductance r resistance change due t chemical reactins n the sensr surface Summarized frm Neethirajan et al. 8) and Krtcenkv 9). Simple in structure and easy t use Chemically inert and resistant t the presence f ther gases Rbustness and lngterm stability Bulky and expensive Use f lenses Ptential irreversible binding f metal xides with sulfur cmpunds frm fds Carbcap f Vaisala (Finland); Bta f Vernier (USA); K33 f Sense- Air (Sweden) CDM series f Figar (Japan)

3 CO 농도의 측정에 의한 미생물적 저장수명 제어 Vl. 17, N. (011) Fig Diagram f wireless CO cncentratin measurement system n real time basis. 이터를 받아 MCU에 데이터를 저장한다. 저장된 데이터는 LAN 망으로 UDP 프로토콜에 의하여 cmputer로 전송된 다. Fig. 에서는 제작된 실시간 CO 농도 측정통신 시스템 을 보여주고 있다. 3개의 sensr 결합 mdule을 제작하였 고, 측정된 CO 농도와 온도 데이터는 무선으로 실시간으 로 전달되어 노트북 cmputer의 hard disk에 저장되게 제 작되었다. 필요에 따라서 온도 데이터는 별도의 sensr에 측정되어 lgging 되기도 하였다. 필요 시 제작된 CO 농도 측정 sensr 시스템의 유효성을 확인하기 위하여 기체크로마토그래피에 의한 CO 농도 측 정을 병행하였다. 이를 위해 포장내부기체 1 ml를 취하여 Alltech CTR I 분리관(clumn)과 열전도도 검출기(TCD, thermal cnductivity detectr)가 장착된 기체크로마토그래 프(Mdel 3800, Varian Inc., Pal Alt, CA, USA)로 주 입하였다. 측정조건으로서 운반기체(carrier gas)는 He을 30 ml/min의 유량으로 흐르게 하였고, 오븐온도는 50 C, 주 입부(injectin prt) 온도는 80 C, 검출기(detectr) 온도는 95 C를 유지하였다. 미생물적 품질 측정 미생물적 품질로서는 호기적 총균수를 측정하였다. 시료 30 g을 stmacher bag에 채취하여 멸균된 0.5% 펩톤수 90 ml를 첨가하고 Stmacher (Stmacher 400 circulatr, Seward Limited, The UK)를 이용하여 300 rpm에서 4분 동안 균질화하여 시료 원액으로 이용하였으며, 시료 원액을 단계별로 10배씩 희석하여 Plate Cunt Agar (PCA; Difc Labratries, Detrit, USA) 배지에 주입평판하여 30 C에 서 3일간 배양하여 콜로니형성단위(clny frming unit, CFU)를 계수하였다. 3. 결과 및 고찰 온도조건에 따른 포장 농도변화의 거동분석 먼저 저장수명을 결정하는 주요 인자로서 온도조건에 따 른 미생물 성장과 CO 농도변화특성을분석하였다. 이전의 연구에서 변패성 포장에서의 CO 농도변화의 유도기가 미 생물적 품질한계에 해당되므로 이가 저장수명을 결정할 수 있는 하나의 기준으로 확인된 바 있다. 하지만 이는 일정 온도조건에서는 쉽게 적용될 수 있으나, 실시간적으로 다양 1. CO Phtgraph f wireless CO sensing system fr perishable fd packages. Fig.. 5)

4 36 ½y»ÁÁxÁ w swz Fig. 3. Micrbial grwth (bld lines) related t CO prductin rate (dtted lines) fr seasned prk meat at different temperatures. w yw w w ƒ ƒ, vw ƒ, CO y w wš w. w š» w Lee w š w mdel w 11). CO š, Fig. 3. CO (dm CO /dt) ƒw ù z w. dm CO /dtƒ ƒ» wš. š dm CO /dtƒ 0l ƒw» w ƒ ~10 CFU/g w 8. q t t w w d CO l w w ƒ w kw ƒ. Guerzni 1) vial ü w ³ CO eƒ e w» wš šw, w.. q t t sƒ l y yw CO (dm CO /dt)ƒ 0 l ƒw» w tw ƒ» w yw q t w y wš w. CO d m l xwš, CO d w. wì s q w t y wì dw. CO dwš s t dw, s ü CO y(d[co ]/dt)» wƒ ƒwš, ƒ l w» w(fig. 4). d[co ]/dtƒ ƒw» w ü w CFU/g t w ùkü w ùkû. š s ü CO.1% w. w t t wì w, q t s CO y»ù y CO y» ƒ. s ü CO d sƒ/ ƒ p CO (,») wù, yƒ ƒ». t CO p wš s, headspace v»,» w p CO w w t p ww ƒw ƒ. Fig. 4 w CO % tw wš w w. wr CO y(d[co ]/dt)» ƒ w t r. w d CO yl y w ƒ lgic sensr l ƒ w. w Fig. 4 sensr ƒ wù d w d CO y ƒ niseƒ ƒ yj e Fig. 4. CO cncentratin ([CO ]) and its change rate ([CO ]/ dt) f seasned prk meat package related t micrbial grwth. 300 g fd in 1 L jar with 70 ml f free vlume. : micrbial cunt; : micrbial cunt estimate ( CFU/g) at utbreak f d[co ]/dt.

5 Vl. 17, N. (011) CO d w 37 Fig. 5. CO cncentratin ([CO ]) and its rate ([CO ]/dt) f seasned prk meat package expsed t dynamic temperature cnditins. 300 g fd in 1 L jar with 70 ml f free vlume. : micrbial cunt; : CO cncentratin measured by GC; : micrbial cunt estimate ( CFU/g) at utbreak f d[co ]/dt; : CO cncentratin (.%) at utbreak f d[co ]/dt. ƒ vw. w ƒ x wš d signal w š» s» dl tw w mw(fig. 5). d[co ]/dt» ƒ(.) 10 CFU/g ü 7 š,. w ƒš, CO.% ù kù Fig. 4 ew, CO % w w w ƒ. Guerzni t w 7) s vial z ³ l CO w w. t qt š» s w d CO w w lgic w. lgic q t w vƒ, vw yƒ ƒw ƒ. q t wù š» w s ü CO d w šwš ƒ yw. tl CO y s ü CO yƒ ƒw» w w t wš, t w ùkû. p CO, CO y» ew. lgic CO dwš l w sensr l w ƒ y. w (y ) w,. šx 1. Wijtzes, T., Van't Riet, K., Huis in't Veld, J.H.J. and Zwietering, M.H A decisin supprt system fr the predictin f micrbial fd safety and fd quality. Int. J. Fd Micrbil. 4: Lee, D.S Packaging and the micrbial shelf life f fd. In: Rbertsn, G. (Ed.), Fd Packaging and Shelf Life. CRC Press, Bca Ratn, FL, USA, pp Taukis, P.S. and Labuza, T.P Time-temperature indicatrs (TTIs). In: Ahvenainen, R. (Ed.), Nvel Fd Packaging Techniques. Wdhead Publishing Limited, Cambridge UK, pp Sutherland, J Mdelling fd spilage. In: Zeuthen, P. Bgh-Srensen, L. (Eds.), Fd Preservatin Techniques. Wdhead Publishing, Cambridge, UK, pp Kim, H.K., An, D.S., Yam, K.L. and Lee, D.S Package headspace cmpsitin changes f chill-stred perishable fds in relatin t micrbial spilage. Packag. Technl. Sci. 4: Guerzni, M.E., Lancitti, R., Trriani, S. and Dellagli, F Grwth mdelling f Listeria mncytgenes and Yersinia enterclitica in fd mdel systems and dairy prducts. Int. J. Fd Micrbil. 4: Guerzni, M.E., Gardini, F. and Duan, J Interactins between inhibitin factrs n micrbial stability f fruit-based systems. Int. J. Fd Micrbil. 10: Neethirajan, S., Jayas, D.S. and Sadistap, S Carbn dixide (CO ) sensrs fr the agri-fd Industry-a review. Fd Biprcess Technl. : Krtcenkv, G Metal xides fr slid-state gas sensrs: what determines ur chice? Materials Science and Engineering B 139: vn Bültzingslöwen, C., McEvy, A.K., McDnagh, C., MacCraith, B.D., Klimant, I., Krause, C. and Wlfbeis, O.S. 00. Slgel based ptical carbn dixide sensr emplying dual luminphre referencing fr applicatin in fd packaging technlgy. Analyst 17: Lee, D.S., Kim, H.K., An, D.S. and Yam, K.L Mdel fr estimating CO cncentratin in package headspace f micrbilgically perishable fd. J. Fd Sci. Nutri. In press. 1. Guerzni, M.E., Piva, M. and Gardini, F Prpsal f a rapid HS-GLC methd fr micrbilgical cntrl f fds. LWT-Fd Sci. Technl. 18:

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

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

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

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(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

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)-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

< 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

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

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

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

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

(1)-01(정용식).fm

(1)-01(정용식).fm Textile Science and Engineering Vl. 48, N. 1, 2011 ƒ s j p y ky w xá½ Á½» 1 Á w œ w lœw, 1 w» w (2010. 12. 10. /2011. 1. 16. k) Analysis f Stabilizatin and Carbnizatin Behavirs f Ply(acrylnitrile) Fibers

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

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

fm

fm w y wz 9«( 1y) 34~40, 2006 J. f the Krean Sciety fr Envirnmental Analysis V/ w y Áy yá váy * w» ( )», *» w y œw Simultaneus Remval f Dixin and Nitrgen Oxide n V/ Catalyst Jun-Yub Lee, Sung-H Hng, Sung-Pill

More information

04.fm

04.fm w y wz 9«( 2y) 91~96, 2006 J. f the Krean Sciety fr Envirnmental Analysis üy wƒ w y k p ½» w w œw Adsrptin Prperties f the Activated Carbns fr Remving Harmful Gases in Indr Envirnments In-Ki Kim Department

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

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

w wƒ ƒw xù x mw w w w w. x¾ w s³ w» w ƒ z š œ Darcy-Weisbach œ w ù, ù f Reynolds (ε/d) w w» rw rw. w w š w tx x w. h L = f --- l V 2 Darcy Weisbach d

w wƒ ƒw xù x mw w w w w. x¾ w s³ w» w ƒ z š œ Darcy-Weisbach œ w ù, ù f Reynolds (ε/d) w w» rw rw. w w š w tx x w. h L = f --- l V 2 Darcy Weisbach d ª Œª Œ 29ƒ 4B Á 2009 7œ pp. 357 ~ 363 ª pv w ü s w A Study on The Velocity Distribution in Closed Conduit by Using The Entropy Concept kyáeá½á Choo, Tai HoÁOk, Chi YoulÁKim, Jin WonÁMaeng, Seung Jin Abstract

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

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

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

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

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

( )-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

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

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

( )-10.fm

( )-10.fm J. f the Krean Sensrs Sciety Vl. 19, N. 6 (2010) pp. 483 489 DOI : 10.5369/JSST.2010.19.6.483 pissn 1225-5475/eISSN 2093-7563 p w» w v y Á Temperature sensr withut reference resistr by indium tin xide

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

(154번 김사라은경).fm

(154번 김사라은경).fm Jurnal f the Krean Ceramic Sciety Vl. 48, N. 4, pp. 316~322, 2011. DOI:10.4191/KCERS.2011.48.4.316 The Effect f Vacuum Annealing f Tin Oxide Thin Films Obtained by RF Sputtering Sun-Phil Kim, Yungrae Kim*,

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

01.01~08(유왕진).fm

01.01~08(유왕진).fm JOURNAL OF KOREA SOCIETY OF PACKAGING SCIENCE & TECHNOLOGY. Vol. 14, No. 1 1~8 (2008) s w Á w» w Comparative Study on the Changes and Prospects of Flexible Food Packaging Design Kyung Soo Noh and Wang

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

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

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

44.fm

44.fm Jurnal f the Krean Ceramic Sciety Vl. 45, N. 5, pp. 263~267, 2008. Piezelectric Prperties and Phase Transitin behavirs f (Bi 1/2 ) 1 x Ca x Ceramics Yng-Hyun Lee*, **, Jeng-H Ch**, Byung-Ik Kim**, and

More information

<312D303128C1B6BAB4BFC1292E666D>

<312D303128C1B6BAB4BFC1292E666D> k Ÿy y y + ûz m Ì ˆw k Ÿ ø ky w y y» wk Ÿ v w k w w ƒ Ÿ ew k Ÿy yø k Ÿ ý k z» w ƒ w Ÿ y k y w x mw w w ³Ÿ wšy v mw y w r œw yÿ ý w z»ÿ Ÿ»» Ÿ ¾ Ÿ 6TCXGN 9GGMN[ ýw k Ÿ Ÿ ƒ š wš y w k Ÿ ƒ m ³ w w y y y 'EQVQWTKUO

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

11(4)-03(김태림).fm

11(4)-03(김태림).fm The Sea Journal of the Korean Society of Oceanography Vol. 11, No. 4, pp. 145 151, November 2006 ˆx d š ½k*ÁŸ w www wlœw Study on Intertidal Flat Topography Observation Using Camera Images TAERIM 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

( )-106.fm

( )-106.fm Jurnal f the Krean Ceramic Sciety Vl. 46, N. 6, pp. 648~652, 2009. DOI:10.4191/KCERS.2009.46.6.648 Prperties f the Electrlyte Separatrs fr Thermal Batteries Using SiOC Mat Kyung Hn Lim, Kwang Yun Ch, Dh

More information

16(5)-02(57).fm

16(5)-02(57).fm Jurnal f Krean Pwder Metallurg Institute Vl. 16, N. 5, 2009 DI: 10.4150/KPMI.2009.16.5.310 /ekœ w TiC/C w w ¼ *Áw a w œ w œw, a Snthesis f TiC/C Cmpsite Pwder b the Carbthermal Reductin Prcess Gil-Geun

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

53.fm

53.fm Jurnal f the Krean Ceramic Sciety Vl. 44, N. 6, pp. 297~32, 27. Square Wave Vltammetry in Cathde Ray Tube Glass Melt Cntaining Different Plyvalent Ins Ki-Dng Kim, Hy-Kwang Kim, and Yung-H Kim Faculty f

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

6.fm

6.fm Jurnal f the Krean Ceramic Sciety Vl. 45, N. 1, pp. 54~59, 2008. Expansin Characteristics f the Hydrated Sdium Silicate Yang Py Kng, H Yen Ch, and Dng S Suhr Department f Materials Science and Engineering,

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

139.fm

139.fm Jurnal f the Krean Ceramic Sciety Vl. 43, N. 12, pp. 839~845, 2006. Manufacture f High Density Graphite Using Cal Tar Pitch Kwang Yun Ch, Kyung Ja Kim, Dh Hyung Riu, Kwang Hyun Lim,* Jung Il Kim,* In Chel

More information

42(3)-5(p ).fm

42(3)-5(p ).fm The Krean Jurnal f Micrbilgy, Vl. 42, N. 3, September 2006, p. 210-215 Cpyright 2006, The Micrbilgical Sciety f Krea Dipldia gssypina ATCC10936 ³ w (+)-Jasmnic acid y š yá½ Á½ {* w tœw tœw Dipldia gssypina

More information

106.fm

106.fm Jurnal f the Krean Ceramic Sciety Vl. 44, N. 11, pp. 639~644, 2007. Synthesis f Cbalt Oxide Free Black Clr Spinel Pigment Jun-H Kim*, Seng-H Lee, Man-Chul Suh*, and Byung-Ha Lee Department f Material Science

More information

44(1)-01(이기안).fm

44(1)-01(이기안).fm 1 w t œwz J. Kr. Inst. Surf. Eng. Vl. 44, N. 1, 011. < > Fe-%Cr-5.8%Al w š y ½ a, ya, b, œ c, ½»c,» a* a w œw, bw»» c w œw High-Temperature Oxidatin Behavir f Fe-%Cr-5.8%Al Ally Sng-Yi Kim a, Sung-Hwan

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

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

( )-40.fm

( )-40.fm Jurnal f the Krean Ceramic Sciety Vl. 47, N. 3, pp. 237~243, 2010. DOI:10.4191/KCERS.2010.47.3.237 Synthesis f Sphene pink Pigment by Rice Husk Ash In-Dn J, Hyun-S Lee, and Byung-Ha Lee Department f Materials

More information

48.fm

48.fm Jurnal f the Krean Ceramic Sciety Vl. 44, N. 5, pp. 60~65, 007. Develpment f Black Clr Spinel Pigment fr High Temperature Kwang-H Lee, Min-S Myung, and Byung-Ha Lee Department f Ceramic Engineering, Myungji

More information

61.fm

61.fm Jurnal f the Krean Ceramic Sciety Vl. 45, N. 7, pp. 387~394, 2008. A Study n the Infrared Emissin Prperties and Freeze-thaw Resistance fr Calcined Clay by Carburizatin Treatment Kih Kim, Sangmyung Kim*,

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

17507.fm

17507.fm J. f the Krean Sensrs Sciety Vl. 17, N. 5 (2008) pp. 369 374 Cyclic lefin cplymer (COC) s v w Ÿ» t v œ (SPR) Á x*á x**á x A fiber ptic surface plasmn resnance (SPR) sensr using cyclic lefin cplymer (COC)

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

58.fm

58.fm Jurnal f the Krean Ceramic Sciety Vl. 44, N. 6, pp. 35~330, 007. Effect f ph n Pre Characteristics in Synthesis f High Prus AlO(OH) Gel by Hydrlysis f Al and Na Mixed Slutin Byung-Ki Park, Dng Uk Che,

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

( )-70.fm

( )-70.fm Jurnal f the Krean Ceramic Sciety Vl. 47, N. 5, pp. 401~406, 010. DOI:10.4191/KCERS.010.47.5.401 Synthesis f Pure and Prus CaOÁAl Clinker by Burning f Hydrates Du Hyuk Kim and Tae Wng Sng Department f

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

( )-112.fm

( )-112.fm Jurnal f the Krean Ceramic Sciety Vl. 47, N. 6, pp. 61~617, 010. DOI:10.4191/KCERS.010.47.6.61 Extractin f Mg in and Fabricatin f Mg Cmpund frm Ferr-Nickel Slag Yng Sik Chu, Y Ree Lim*, Hng Bum Park, Hun

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

(153번 김철영).fm

(153번 김철영).fm Jurnal f the Krean Ceramic Sciety Vl. 48, N. 4, pp. 269~277, 2011. DOI:10.4191/KCERS.2011.48.4.269 Effect f Varius Oxides n Crystallizatin f Lithium Silicate Glasses Chul Min Kim, Hyung Bng Lim, Yug Su

More information

132.fm

132.fm Jurnal f the Krean Ceramic Sciety Vl. 43, N. 1, pp. 805~811, 006. Effect f Oxidatin f Ni n the Micrstructure f Ni/YSZ Ande and Crack Frmatin in YSZ Electrlyte Layer fr SOFC Jun-Sil Lim,* Jng-Hn Chi,* and

More information

< D B9DABBF3C8AF29BABCB5E52E666D>

< D B9DABBF3C8AF29BABCB5E52E666D> Jurnal f the Krean Ceramic Sciety Vl. 46, N. 5, pp. 58~533, 009. DOI:10.4191/KCERS.009.46.5.58 Effects f β-sic Particle Seeds n Mrphlgy and Size f High Purity β-sic Pwder Synthesized using Sl-Gel Prcess

More information

( )-47.fm

( )-47.fm Jurnal f the Krean Ceramic Sciety Vl. 47, N. 4, pp. 302~307, 2010. DOI:10.4191/KCERS.2010.47.4.302 Effect f V-dping n Clur and Crystallizatin f Malayaite Pigments In-Dn J and Byung-Ha Lee Department f

More information

17.fm

17.fm Jurnal f the Krean Ceramic Sciety Vl. 44, N., pp. 110~115, 007. Micrwave Dielectric Prperties f BaNd - BaO-B -K O-SiO -xtio Glass Cmpsites Dng-Eun Kim,*, ** Sung-Min Lee,* Hyung-Tae Kim,* and Hyung-Sun

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

31.fm

31.fm Jurnal f the Krean Ceramic Sciety Vl. 44, N. 3, pp. 182~187, 2007. Micrwave Sintering f Gd-Dped CeO 2 Pwder Yung Gun Kim and Seuk-Bum Kim Department f Materials Science and Engineering, Gyenggi University,

More information

17(1)-06.fm

17(1)-06.fm Krean J. Crystallgraphy Vl., N. 1, pp.14~18, 006 LP-MOCVD w ZnO ù Ÿw p Á yá * w w» w» l Structural and Optical Prperties f ZnO Nanwires Synthesized by LP-MOCVD Prcess Yung-Jin Chi, Jae-Hwan Park and Jae-Gwan

More information

( )-59.fm

( )-59.fm Jurnal f the Krean Ceramic Sciety Vl. 47, N. 4, pp. 319~324, 2010. DOI:10.4191/KCERS.2010.47.4.319 Preparatin f Screen Printable Cnductive MSi 2 Thick Films fr Ceramic Sheet Heater Bae-Yen Kim, Dng-Bin

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

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

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

11(5)-7(09-37)p fm

11(5)-7(09-37)p fm w wz J Kor Soc Cloth Ind 11«y 009 Vol 11 No pp73-763009) Ášw k ÁÁ w w Comparison of Actual Status and Satisfaction of School Uniform between Middle and High School Students Ji-Min Lee Jeong-Ran Lee and

More information

42(3)-6(p ).fm

42(3)-6(p ).fm The Krean Jurnal f Micrbilgy, Vl. 42, N. 3, September 2006, p. 216-222 Cpyright 2006, The Micrbilgical Sciety f Krea β-galactsidase ³ p»á ù 2 Á 2 Á Á Áy 3 Á½ * w œw y œw l ƒm w œw œ f β-galactsidase (lactase)

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

9(2)-12(p ).fm

9(2)-12(p ).fm w wz J. Kor. Soc. Cloth. Ind. 9«2y, 2007 Vol. 9, No. 2, pp.167-175(2007) 30 q q f œ w q œw œ Transition of Fashion Trends and Fashion Colors in Recent 30 Years Kyung-Hee Lee Dept. of Textile & Fashion

More information

353-11(07-31).fm

353-11(07-31).fm Kr. J. Micrbil. Bitechnl. Vl. 35, N. 3, 226 230(2007) ƒ w ³l Interfern α-1 œ e w ¼ÁÁ½Á 1 Á * ww œw» l, 1 vl Effect f Oxygen Supply n the Prductin f Interfern α-1 by Recmbinant Escherichia cli in Fedbatch

More information

11(2)-03(김수옥).fm

11(2)-03(김수옥).fm w» wz, 11«2y(2009) Korean Journal of Agricultural and Forest Meteorology, Vol. 11, No. 2, (2009), pp. 61~71 š y» e w y ½ 1 Á½ 1 Á 1 *Á½ 2 Á y 3 Á 1 1 w k lœw, 2 p w, 3»» (2009 6 2 ; 2009 6 22 ; 2009 6

More information

( )-100.fm

( )-100.fm Jurnal f the Krean Ceramic Sciety Vl. 47, N. 6, pp. 491~497, 2010. DOI:10.4191/KCERS.2010.47.6.491 Temperature Dependence n Elastic Cnstant f SiC Ceramics Jng In Im, Byung-W Park, H-Yng Shin, and Jng-H

More information

( )-129.fm

( )-129.fm Jurnal f the Krean Ceramic Sciety Vl. 48, N. 1, pp. 80~85, 2011. DOI:10.4191/KCERS.2011.48.1.080 Effect f HF Treatment n the Crystallizatin Behavir f the Glass Cntaining Cal Bttm Ashes Sinae J and Seunggu

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

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

fm

fm w sw x w w w x y w w sw J[FTQRJ[VG w 5CVQƒw e UWDOGTIGF J[FTQRJ[VG šw z w w w w ù p w s w r w z w w kw p ³ w š w z w š w w kw mƒ w š w s w q 8CNNKUPGTKC FGPUGUGTTWNCVC½ ½ Õ 6[RJC NCZKOCPPK -KO CPF %JQK

More information

10.fm

10.fm Jurnal f the Krean Ceramic Sciety Vl., N. 1, pp. 65~69, 007. Crrsin f Refractry in Glass Melts fr Plasma Display Panel Substrate Ki-Dng Kim, Hyun-Su Jung, and Hy-Kwang Kim Department f Materials Science

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

10.123~130.fm

10.123~130.fm Atmosphere. Korean Meteorological Society Vol. 21, No. 1 (2011) pp. 123-130 w EUV-B p k D w w Á½ y* w»y w ( : 2010 12 1, : 2011 2 18, y : 2011 3 19 ) The Radiative Characteristics of EUV-B over the Korean

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

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

( )-68.fm

( )-68.fm Jurnal f the Krean Ceramic Sciety Vl. 47, N. 5, pp. 445~449, 010. DOI:10.4191/KCERS.010.47.5.445 Blating Mechanism f Artificial Lightweight Aggregate fr Recycling the Waste Glass Shin Hyu Kang and Ki Gang

More information

( )-86.fm

( )-86.fm Jurnal f the Krean Ceramic Sciety Vl. 46, N. 6, pp.g609~614, 009. DOI:10.4191/KCERS.009.46.6.609 Prperties f Lw Temperature Sintered Prus Ceramics frm Alumina-Zinc Brsilicate Glass Kwan S Kim, Ki Yung

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

22(3)-04.fm

22(3)-04.fm J. Fd Hyg. Safety Vl. 22, N. 3, pp. 159~164 (2007),QWTPCN QH (QQF *[IKGPG CPF 5CHGV[ Available nline at http://www.fdhygiene.r.kr ù ý ô Ì»Ï Œ äâ  * ƒm w tá w Hygienic Quality f Drinking Water Served in

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

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