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Preface - kmutt

Preface - kmutt

KMUTT Annual Research

KMUTT Annual Research Abstracts 2005 extract phenol derivatives from an aqueous solution, was based on logP values. The logP value of the hydrophobic solvent must be equal or lower than the logP of phenolic compound to be exacted. As a proof of principle test, 4- chlorophenol was partitioned from aqueous solution into a nitrobenzene electrode coating and then oxidized at single wall carbon nanotubes (SWNT) which were adsorbed on the glassy carbon electrode. This was reduced the fouling which usually occurs at glassy carbon and enhanced the oxidation current. The oxidation current to a 20 µM 4-chlorophenol solution at the SWNT suspended in nitrobenzene modified glassy carbon electrode was 1.02 µA compared with 0.30 µA at an electrode modified by only nitrobenzene and 0.09 µA at an unmodified electrode. The detection limited and sensitivity to 4-chlorophenol of SWNT suspended in nitrobenzene modified electrode was 3 x 10 -10 M and 6.60 x 10 -9 AM -1 respectively. IC-343 DUAL BIOSENSOR FOR THE TOTAL CONCENTRATION DETERMINATION OF PHENOLS Patsamon Rijiravanich, Mithran Somasundrum, Werasak Surareungchai The International Conference on Bionanotechnology : A New Chapter of Life (BioThailand 2005), November 2-4, 2005, Queen Sirikit National Convention Center, Bangkok, Thailand, p. 24 Phenolic compounds are considered as an acute problem in environment. However, the measurement of total phenols concentration with an enzyme biosensor is failure. A biosensor for total phenol determination was investigated, based on a dual enzyme electrode. Three types of enzyme, polyphenol oxidase (PPO), laccase (LAC) and horseradish peroxidase (HRP), were studied. PPO and LAC were immobilized by electropolymerization of poly (pyrrole) on a platinum electrode. HRP was bound by the sequential immobilization of sulfonic thiol, HRP and polystyrene sulfonate (PSS) onto a gold electrode. The steady-state response of each enzyme electrode was noted while varying enzyme loading, rate of convection and pH. Eight phenol derivatives were screened by each biosensor. The different enzymes showed different amperometric responses to the different derivatives. Hence, a dual-biosensor, based on 197 PPO- and HRP-modified electrodes, was used for total phenols measurement. The biosensor could determine total phenol concentration in a mixture of two to four derivatives with standard error of 0.18 to 1.95 using, the proposed mathematics model. However, passivation by quinone derivatives limited the sensor stability. IC-344 WATER MINIMIZATION IN THE TAPIOCA STARCH PRODUCTION INDUSTRY: A DECISION SUPPORT SYSTEM Natthakan Rungraeng, Kanchana Saengchan, Annop Nopharatana, Warinthorn Songkasiri Starch Update 2005 : The 3 rd Conference on Starch Technology (BioThailand 2005), November 4-5, 2005, Queen Sirikit National Convention Center, Bangkok, Thailand, p. 325 A Typical tapioca starch manufacturing process consumes freshwater approximately 10 to 30 m 3 per ton of starch produced. The amount of water consumption can be reduced considerably by the recycle of wastewater. This research utilizes a water pinch technology as a tool to minimize water consumption in the starch production process. The water pinch decision support system, called the W-Pinch program, was generated by the Starch Engineering and Process Optimization (SEPO) Program, King Mongkut's University of Technology Thonburi (KMUTT). The W-Pinch modelling system includes 7 composition balances of water, starch, protein, pulp, sand, peel, and sulfur. Water composition is correlated to freshwater and wastewater calculations and the moisture content of the product. Starch and pulp compositions demonstrate the extractor efficiency. Peel, sand, protein, and sulfur compositions are the control parameters to monitor and control the final product quality after applying the water recycling patterns. Each composition stream was balanced for each unit in the starch production process, i.e., root receiver, washer/cutter, rasper/grinder, coarse extractor, fine extractor, separator I, separator II, separator III, centrifugal dewater unit, and flash dryer. A user inputs the removal efficiency of each component and the maximum allowable concentrations of each composition at that specific unit into the W-Pinch input file. Five recycling patterns were designed to evaluate the water minimization in the starch process. All the water streams do not require the water treatment ire the reuse of water. In International Conference

198 addition, the W-Pinch program allows a user customize his own cling pattern. The W-Pinch model was validated with the data from one tapioca starch factory with a capacity 200 tons starch per day. The W-Pinch simulations showed that, with a recycling water stream, the water consumption was reduced by 25 percent of that of the non-recycling system. Institute for Scientific and Technological Research and Services IC-345 COCONUT COIR CEMENT BOARD Chanakarn Asasutjarit, Jongjit Hirunlabh, Joseph Khedari, Michel Daguenet, Daniel Quenard 10DBMC International Conference on Durability of Building Materials and Components, April 17-20, 2005, Lyon, France Natural organic fibers exist in reasonably large quantities in many countries of the world. Coconut coir fibers are widely available in Thailand. They are the seed-hair fiber obtained from the outer shell (endocarp) or husk of the coconut. In addition, coconut coir has low thermal conductivity. Using coconut coir cement board as a construction component with low thermal conductivity will reduce heat transferred into building which decrease energy consumption of building facilities (air condition). This will reduce the utility cost. Coconut coir cement boards are composites to alternative option to save energy consumption of building. The main parameter was investigated namely mixture ratio of coconut coir fiber, cement and water. Three mixing ratio by weight were varied 1:2:1, 1:1:1, and 2:1:2, respectively (cement : coconut coir : water). In this research, coconut coir fiber length of 0.5-1 cm. was used in coconut coir cement board production. In addition, boiled and washed pretreatment of coconut coir was obtained in fiber preparation. The specimens were cast in 350 mm. x 350 mm. x 10 mm. steel molds. After the cool pressing, the board was stacked and stored for 28 days in order to be completely cured, and then trimmed and cut into various test specimens. The investigation revealed that the optimum of mixture ratio is 2:1:2. The corresponding composite properties are as follows: thermal conductivity of 0.40 w/m K, MOR(Modulus of Rupture) of 19.94 MPa MOE(Modulus of KMUTT Annual Research Abstracts 2005 Elasticity) of 5315 MPa internal bond of 0.73 MPa, thickness swelling of 3.64 MPa and 9.13 % moisture content. Examination of chemical composition analysis indicated that boiled and washed coconut coir fiber have high lignin and cellulose. High amount of lignin and cellulose would increase of the strength of composites. Comparison of commercial board composite confirmed that the coconut coir-based lightweight composite have a low thermal conductivity. That is extremely interesting for energy saving with use as ceiling and wall material. IC-346 PERFORMANCE SIMULATIONS OF A NEW SOLAR THERMAL ENGINE SYSTEM FOR CIRCULATING STAGNANT WATER Pongsakorn Kerdchang, Jongjit Hirunlabh, Sombat Teekasap, Joseph Khedari, Belkacem Zeghmati The 4 th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics (HEFAT 2005), September 19-22, 2005, Cairo, Egypt This paper presents a numerical study of thermal performance of a solar thermal engine system. The solar thermal engine is composed of solar collector box with regenerator hydraulic connecting to transmitting power system. The operating system is considered as an isothermal process. The working fluid is the fiuorocarbons (R-11). Numerical simulations included a comparison between the performance of the engine built with either alpha or beta types expressed to the power output and revolution of engine. It was found that a beta type engine is more interesting than alpha type because it can give higher energy output. The intended application of the system is to circulate water in canals, ponds etc. Therefore, it is expected that this system can helpfully decrease electrical consumption and stagnant water pollution in both rural and urban areas and promote the use of solar energy as well. IC-347 FIELD COMPARATIVE ANALYSIS OF THERMAL PERFORMANCE BETWEEN PERFORATED SOFFIT AND COMMON WOOD SOFFIT Noppanun Nankongnab, Jongjit Hirunlabh, Joseph Khedari International Conference

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    CONTENTS Page Preface International

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    National Journals

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    54 นอยกวาแบบต

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    56 (Least Square Matching Method)

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    58 อุณหภูมิ 30 แ

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    60 สเปกตรัม จา

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    62 ขอมูลดานทร

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    64 22.8 มาตรฐานเป

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    66 2545 NJ-033 EFFECTS OF ELEVATED

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    68 เปลือกที่ม

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    70 ของการดูดซ

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    72 การสกัดดวย

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    74 collection of authentic texts th

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    76 รอยละ 32 มีสา

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  • Page 217 and 218: 210 จอมเทียนปา
  • Page 219 and 220: 212 การสกัดสาร
  • Page 221 and 222: 214 ไดแก อุณหภู
  • Page 223 and 224: 216 โดยกลไกของ
  • Page 225 and 226: 218 เคลือบเมื่
  • Page 227 and 228: 220 สําเริง จัก
  • Page 229 and 230: 222 ลดเวลาตลอด
  • Page 231 and 232: 224 อุณหภูมิสู
  • Page 233 and 234: 226 NC-043 การวิเคร
  • Page 235 and 236: 228 เกิดพฤติกร
  • Page 237 and 238: 230 เดียว เพื่อ
  • Page 239 and 240: 232 มากนอยเพีย
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  • Page 245 and 246: 238 บทความนี้น
  • Page 247 and 248: 240 นําเอาเวคเ
  • Page 249 and 250: 242 งานวิจัยนี
  • Page 251 and 252: 244 การอบแหงลด
  • Page 253 and 254: 246 แยกเฟสต่ํา
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    248 กลบ โดยเปรี

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    250 นํามาใช คือ

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    252 วิเคราะหหา

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    254 NC-123 การวิเคร

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    256 NC-129 เครื่องผ

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    258 สามารถขยาย

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    260 ครั้งที่ 43, 1-

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    262 calculated with the use of the

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    264 Version 1.3.1 และ Softwar

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    266 ขนไกได จากก

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    268 โครงสรางขอ

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    270 การปลูกพืช

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    272 ระดับพึงพอ

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    274 ของแกสโซฮอ

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    276 1) สภาพทั่วไ

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    278 อนุปริญญา แ

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    280 อาชีวศึกษา

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    282 กระทบตอคุณ

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    284 ตั้งกลไกแข

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    286 นุชจรินทร เ

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    288 โดยรวมผูบร

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    290 แนนกระแสไฟ

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    292 NC-222 ผลงานตีพ

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    294 NC-227 เตาเผาไห

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    296 จําเพาะรวม

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    298 NC-238 จลนพลศาส

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    300 ทนงเกียรติ

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    302 ดีเซลนั้นม

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    304 NC-254 การใชเทค

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    306 อาคารศูนยก

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    308 กระบวนการร

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    310 บรรยากาศขอ

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    312 metal ions on 2-AP biosyntheis

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    314 total clones while the ethanol

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    316 การประชุมท

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    318 BioThailand (The 16 th Annual M

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    320 สูงที่สุดพ

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    322 นัยสําคัญท

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    324 ความเขมขนร

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    326 ปลูกแบบพรา

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    328 นี้ทําใหทร

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    330 ดุลชาติ มาน

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    332 ไมโครเมตร ส

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    334 In this study, we collected seq

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    336 กนกรัตน นาค

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    338 การพัฒนาสื

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    340 one of the causes of difficulty

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    342 ทวีรัตน วิจ

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    344 program, Cytoscape. This model

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    346 production demand. Nevertheless

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    348 อุลตราไวโอ

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    350 นี้อยูในชว

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    352 เพื่อนําสว

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    354 trichloroacetic acid (TCA) ม

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    356 ทรัพยากรที

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    358 ในประเทศสห

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    360 8-9 ธันวาคม 2548,

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    362 ซึ่งเกิดขอ

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    364 NC-391 การวิเคร

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    366 การประชุมว

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    368 2547) พบวามหาว

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    370 กนกพร ลีลาเ

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    Authors Index

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    376 จงจิตร หิรั

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    378 ธ ธนธร ทองส

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    380 พยุงศักดิ์

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    382 วรรณพ วิเศษ

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    384 สุดารัตน จิ

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    386 อุลาวัณย กุ

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    388 138, 141, 142 Jarunya Narangaja

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    390 Panida Kongsawadworakul 191 Pan

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    392 Sorakrich Maneewan 124, 136 Sor

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    394 KMUTT Annual Research Abstracts

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