bluuebunny/crossref_metadata_2025 huggingface dataset:
Heat Transfer in Round Tube with Rectangular-Winglet Vortex Generators
Authors: Skullong Sompol , Promvonge Pongjet
Published: May 2014

Effect of 30° rectangular-winglet vortex generators (WVGs) mounted in the central core of a circular tube on convection heat transfer and friction loss is experimentally investigated in the present work. The rectangular-WVGs with two different winglet-height to tube-diameter ratios (called blockage ratio, BR = b/D = 0.1 and 0.2) and three winglet-pitch to tube-diameter ratios (PR=P/D=0.5, 1.0, and 1.5) are introduced. In the experiment, air at ambient condition is passed through the uniform heat-fluxed circular tube for Reynolds numbers (Re) in a range of 500024,000. The use of WVGs is to generate longitudinal vortex flows in the tube. The experimental results of heat transfer and pressure loss presented in terms of Nusselt number and friction factor are compared between the inserted and the smooth tubes. It is found that the BR and PR provide a significant effect on the thermal performance of the test tube. The results reveal that at smaller PR, the WVG with BR=0.2 provides the highest heat transfer and friction factor but the one with BR=0.2, PR=1.5 yields the best thermal performance.
Thermal Performance in Circular Tube with Co/Counter-Twisted Tapes
Authors: Chokphoemphun Suriya , Hinthao Chayodom , Eiamsa-ard Smith , Promvonge Pongjet , Thianpong Chinaruk
Published: May 2014

Thiswork presents an experimental study on enhanced heat transfer and pressure loss characteristics in a tube having a uniform heat-fluxed wall by using small double and triple co-and counter-twisted tapes at two twist ratios, y/w=4 and 4.5. The investigation has been conducted for Reynolds number from 5300-20,000. The experimental results of the heat transfer and pressure drop are proposed in terms of Nusselt number and friction factor, respectively.The experimental results reveal thatthe maximum TEF for the triple counter-twisted tapesat smaller twist ratio isabout 1.26.
Synthesized BG-MCM-41 as Support Catalyst for Fenton-Like Reaction of Lignin Degradation
Authors: Sriprom Pongsert , Neramittagapong Arthit , Neramittagapong Sutasinee
Published: May 2014

Lignin was degraded by Fenton-like reaction using Cu-BG-MCM41, in which BG-MCM41 was synthesized by hydrothermal technique from Bagasse ash (BG) as a support. Cu was immobilized on BG-MCM41 by in situ hydrothermal and impregnation method and characterized by XRD and BET surface area. The Fenton-like reactions were carried out in a batch reactor using 5wt%CuO/SiO2, 10wt%CuO/SiO2, 5wt%Cu-BG-MCM41 and 10wt%Cu-BG-MCM41 at the pH of 3 and the temperature of 80°C. The Cu loading, pH, and temperature affected lignin degradation. The efficiency of lignin degradation obtained were 95% for 5wt%CuO/SiO2, 95% for 10wt%CuO/SiO2, 65% for 5wt%Cu-BG-MCM41 and 96% for 10wt%Cu-BG-MCM41 at the pH of 3 and 80°C for 30 min. The results show that pH and temperature affected the stability of Cu loading, in which it was leached into the aqueous solution and that the reaction will occur in the aqueous solution more than on the surface of catalyst. Thus, 5wt%Cu-BG-MCM41 has the highest stability for Fenton-like reactions.
Flow and Heat Transfer Characteristics of Impinging Jet from Expansion Pipe Nozzle with Air Entrainment Holes
Authors: Kaewchoothong Natthaporn , Wae-Hayee Makatar , Vessakosol Passakorn , Niyomwas Banyat , Nuntadusit Chayut
Published: May 2014

Flow and heat transfer characteristics of impinging jet from expansion pipe were experimentally and numerically investigated. The expansion pipe nozzle was drilled on expansion wall for increasing an entrainment of ambient air into a jet flow. The diameter of round pipe nozzle was d=17.2 mm and the diameter of expansion pipe was fixed at D=68.8 mm (=4d). The number of air entrainment holes was varied at 4, 6 and 8 holes, and the expansion pipe length was examined at L= 2d, 4d and 6d. In this study, the expansion pipe exit-to-plate distance was fixed at H=2d and the Reynolds number of jet was studied at Re=20,000. Temperature distribution on the impinged surface was acquired by using an infrared camera. The numerical simulation was carried out to reveal the flow field. The results show that the ambient air enters through the holes and subsequently blocked the entrainment of ambient air into the jet flow. It causes to enhance the heat transfer particularly at stagnation point higher than the case of conventional pipe: 4.68% for 4 holes at L=2d, 6.4% and 6.28% for 4 holes and without holes at L=4d and 5.48% for 8 holes at L=6d.
Field Investigation of the Small House with the Ventilated Roof Tiles
Authors: Amornleetrakul Onvalee , Puangsombut Withaya , Hirunlabh Jongjit
Published: May 2014

This paper investigates the thermal performances and heat gain reduction of a new roof tile design referred as Ventilated Roof Tile (VRT) compared with an ordinary corrugated concrete roof tiles (CCR). The outside dimension of each small house was 1.70 x 1.70 x 2.85 m3 (W x L x H) and inside dimension was 1.50 x 1.50 x 2.20 m3. The volume of each room was 4.95 m3. The gable roofs slope were 25o and surface area of VRT was 2.58 m2 per each side facing north and south. The VRT tile composed of upper cement plate 40 × 40 cm2 and lower cement plate 30 x 40 cm2. Between plates was 3 cm thickness air gap.
The experimental results showed that the top surface of VRT was lower than CCR about 2.10°C for average temperature (from 6:00 18:00) and made VRT room temperature lower than CCR about 1.41°C for average temperature. VRT could reduce heat gain with air flow rate through the roof tiles gaps varied following the solar radiation, during time 8:00-17:00 the natural ventilation varied from 0.003-0.014 m3/s (10.6-50.0 m3/hr.). Observed that, during 17:00-18:00, the air flow rate is about 0.003 m3/s (10.8 m3/hr.) due to heat accumulated in the attic space and roof tiles.
Investigation of Temperature and Air Flow inside Para Rubber Greenhouse Solar Dryer Incline Roof Type by Using CFD Technique
Authors: Somsila Praphanpong , Teeboonma Umphisak
Published: May 2014

Para rubber solar greenhouse dryer is a one method of drying and it can be responded to requirement of agriculturist on amount of drying product. Present, the dryer was being built many type for made drying agriculture product. The air circulation and temperature scatter havent been used for the dryer built process, which are cause of fungus on product surface and product dehydrate not all over. Therefore, the objective of this research is to study temperature distributes and air circulations inside Para rubber solar greenhouse dryer of incline roof type using computational fluid dynamics method. The result showed that temperature and velocity of air were good distributing all area and havent air cluster under the roof.
Reducing the Thermal Asperity Effect in Perpendicular Magnetic Recording System
Authors: Suppakhun Yupin
Published: May 2014

In this paper, we propose a new method to estimate and reduce effectively thermal asperity (TA) in the perpendicular recording channels with state trellis. The proposed method comprises of recursively applying a previous noise estimate to a calculation of a current noise estimate to eliminate the effects of TA from the equalized signal. With partial response a maximum-likelihood detector base on partial-response (PR) target with DC-full component can improve the system performance by more than 50% when TA occurs. Unlike previous studies of TA cancellation or suppression, this method is different because we dont use PR targets with non-dc components and high pass filter.
Development of on Board Motorcycle System to Measure on Road Driving Pattern
Authors: Seedam Atthapol , Satiennam Thaned , Radpukdee Thana , Satiennam Wichuda
Published: May 2014

This study developed an onboard system to measure on road driving pattern for a motorcycle. The main components of the developed system consist of a magnetic wheel speed sensor for measuring speed of the motorcycle and a data logger. The developed data logger consists of a microcontroller, memory storage and data display panel for processing and recording the on road speed-time data. The developed system was validated to measure and correctly record speed per time interval. The developed onboard system will be applied by installing on driven motorcycles for recording a speed-time data that will be used to develop the motorcycle driving cycle.
A Method of Recommendation the Most Used XML Tags
Authors: Vacharaskunee Sutheetutt , Intakosum Sarun
Published: May 2014

Processing of a large data set which is known for today as big data processing is still a problem that has not yet a well-defined solution. The data can be both structured and unstructured. For the structured part, eXtensible Markup Language (XML) is a major tool that freely allows document owners to describe and organize their data using their markup tags. One major problem, however, behind this freedom lies in the big data retrieving process. The same or similar information that are described using the different tags or different structures may not be retrieved if the query statements contains different keywords to the one used in the markup tags. The best way to solve this problem is to specify a standard set of the markup tags for each problem domain. The creation of such a standard set if done manually requires a lot of hard work and is a time consuming process. In addition, it may be hard to define terms that are acceptable by all people. This research proposes a model for a new technique, XML Tag Recommendation (XTR) that aims to solve this problem. This technique applies the idea of Case Base Reasoning (CBR) by collecting the most used tags in each domain as a case. These tags come from the collection of related words in WordNet. The WordCount that is the web site to find the frequency of words is applied to choose the most used one. The input (problem) to the XTR system is an XML document contains the tags specified by the document owners. The solution is a set of the recommended tags, which is the most used tags, for the problem domain of the document. Document owners have a freedom to change or not change the tags in their documents and can provide feedback to the XTR system.
Hybrid Balancing Technique Using GRSOM and Bootstrap Algorithms for Classifiers with Imbalanced Data
Authors: Pattanapairoj Sirorat , Chetchotsak Danaipong , Arnonkijpanich Banchar
Published: May 2014

To deal with imbalanced data, this paper proposes a hybrid data balancing technique which incorporates both over and under-sampling approaches. This technique determines how much minority data should be grown as well as how much majority data should be reduced. In this manner, noise introduced to the data due to excessive over-sampling could be avoided. On top of that, the proposed data balancing technique helps to determine the appropriate size of the balanced data and thus computation time required for construction of classifiers would be more efficient. The data balancing technique over samples the minority data through GRSOM method and then under samples the majority data using the bootstrap sampling approach. GRSOM is used in this study because it grows new samples in a non-linear fashion and preserves the original data structure. Performance of the proposed method is tested using four data sets from UCI Machine Learning Repository. Once the data sets are balanced, the committee of classifiers is constructed using these balanced data. The experimental results reveal that our proposed data balancing method provides the best performance.
Multi-Platform Institutional Repository
Authors: Roengniransathit Pisin , Taweepworadej Wiroj , Polpinit Pattarawit
Published: May 2014

This paper introduces an alternative approach of how to build the institutional repository, the multi-platform IR, for research institutes whose internal research units have existing IRs. Firstly, it describes the strategy of IR that harvests data from existing various-platform local repositories, allows researchers to manually input their publication data, provides administrative tool to manipulate the IR database, and includes output interface and search tool for end user. Then the program based on Drupal framework using real data from libraries of Khon Kaen University is provided to demonstrate the investigated strategy. The program perfectly performs all required tasks and could potentially be an example for future IRs of research institutes who would like to consolidate and aggregate existing local IRs.
Classifiers for Ground-Based Cloud Images Using Texture Features
Authors: Kliangsuwan Thitinan , Heednacram Apichat
Published: May 2014

The classification of ground-based cloud images has received more attention recently. The result of this work applies to the analysis of climate change; a correct classification is, therefore, important. In this paper, we used 18 texture features to distinguish 7 sky conditions. The important parameters of two classifiers are fine-tuned in the experiment, namely, k-nearest neighbor (k-NN) and artificial neural network (ANN). The performances of the two classifications were compared. Advantages and limitations of both classifiers were discussed. Our result revealed that the k-NN model performed at 72.99% accuracy while the ANN model has higher performance at 86.93% accuracy. We showed that our result is better than previous studies. Finally, seven most effective texture features are recommended to be used in the field of cloud type classification.
Secure Remote Biometric Authentication Protocol
Authors: Salaiwarakul Anongporn
Published: May 2014

The secure remote biometric authentication protocol proposed in this paper solves the problem from the nature of the biometric data. The proposed protocol preserves the privacy of the users biometric data when it is transmitted in the protocol. The liveness property of the protocol guarantees that the biometric data used to authenticate the user comes from the live presentation of the user. The most important property related with the intentional authentication; it confirms that the purpose of the user authentication correspondences to the users purpose. The proposed secure remote biometric authentication protocol promises three properties so that the user is confident with the security level that the protocol offers and it guarantees that the protocol does not manipulate with an intruder.
Formal Verification of WS-BPEL Using Timed Trace Theory
Authors: Kongburan Wutthipong , Pradubsuwun Denduang
Published: May 2014

A web service composition is able to create a new service by incorporating some existing web services. Currently, Web Service Business Process Execution Language or WS-BPEL is a promising language used to describe the web service composition. Since in the real world most of business processes have been involved temporal context and they are quite complex interaction, it is impossible to completely eliminate all failures in them. Therefore, a formal verification is required to assure the correctness and reliability of the web service composition. In this paper, timed trace theory has been applied to verify the web service composition with temporal constraints. Both safety and timing failures can be examined. Experimenting with a ticket reservation system, the proposed approach shows its effectiveness.
Effect of Drying Methods on Chemical and Functional Properties of Jerusalem Artichoke (Helianthus tuberosus L.) Powders
Authors: Inchuen Sudathip , Porniammongkol Orraya , Duangkhamchan Wasan
Published: May 2014

This paper presents the effect of drying methods on chemical and functional properties of Jerusalem artichoke (Helianthus tuberosus L.) powders. To prepare the Jerusalem artichoke powders, the slices of Jerusalem artichoke were dried in hot-air oven at 60°C, in microwave oven with 200 W, under open-air sun and under shade until moisture content of approximately 10% (dry basis) was reached. In addition, blanching was used in order to investigate the influence of pre-treatment. The contents of total phenolic, total sugar, reducing sugar and water-holding capacity of Jerusalem artichoke powders prepared by different drying methods were analyzed. The results showed that both blanching and drying method affected these properties of Jerusalem artichoke powders significantly (p<0.005).
Thermal Degradation and Fire Retrandancy of Wood Impregnated with Nitrogen Phosphorus Flame Retardant
Authors: Phromsaen Atchariyaphorn , Chindaprasirt Prinya , Hiziroglu Salim , Kasemsiri Pornnapa
Published: May 2014

In this research, the effect of diammoniumphosphate (DAP) as fire retardant additive during thermal degradation of wood samples from shorea obtuse (Dipterocarpaceae) has been investigated. Thermal properties of wood samples impregnated with DAP ranging from 0-40 %wt were characterized by thermogravimetric analysis (TGA) and limiting oxygen index (LOI). Leachability of DAP from impregnated samples kept under running water was also investigated. The results indicated that the rate of weight loss obtained from TGA reveal that impregnation of DAP reduced the degradation rate from 0.95%/°C to 0.56%/°C. Furthermore, LOI of woods specimens trended to be increase from 24.8 to 30.6 when they were treated with DAP having a range of 0-30 %wt. Based on the results of this study, wood samples impregnated with 30%wt of DAP can be classified as self-extinguishing materials and cloud meet the requirement for non-flammability in construction. The leachability test indicated that only trace amount of unreacted DAP leached from the samples.
Shikimic Acid Production from Ginkgo biloba via Callus Culture
Authors: Phongtongpasuk Siriporn , Piemthongkham Phitchayakon
Published: May 2014

Shikimic acid is a very important precursor for industrial synthesis of oseltamivir (Tamiflu®) which is used for the antiviral treatment. In this study, callus culture of Ginkgo biloba for shikimic acid production was reported. Callus induced from either leaves or nodal stems of sterilized ginkgo was grown on MS medium supplemented with a combination of plant growth regulators as followed: MS+KD, MS+BD, MS+KN and MS+BN for 90 days. Morphological changes, fresh weight and shikimic acid content of callus in each medium were monitored every 30 days. The result showed that callus cultures from each treatment were morphologically different. It is likely due to explant used for callus induction and type of plant growth regulators added into the medium. Browning effect was noticeably detected from 60 days to 90 days. Moreover, fresh weight and shikimic acid content of callus culture depended on cultivation time, cultivation medium and type of explants used for callus induction. Callus induced from nodal stem grown on MS+BN for 30 days offered the highest fresh weight. For shikimic acid production, the most satisfied quantity of shikimic acid was achieved from callus cultured on MS+KN for 30 days by exploiting nodal stem as explant.
BioClean and Bioextracts to Pilot Institutions 2013
Authors: Uparivong Sittisak
Published: May 2014

BioClean and Bioextracts are liquid bioproducts for agricultural and environmental sectors. Bioclean was produced by using various diversities flowers while bioextracts were produced by using available raw materials such as vegetables, fruits, herbaceous crops, etc., and together with molasses, and the 18 species of zymogenic synthetic microorganisms [18 ZSMs]. The target of the products of bioclean and bioextracts as biofertilizers liquid (2013) was aimed to service for environment cleaning and green area on the event ofPilot Institutions Big Cleaning Day 2013at the two institutions ofKhaen Thong Childrens Home (Khon Kaen) and Srisangwankhonkaen School in Khon Kaen Province. The both products were analyzed and investigated properties products by the procedures of crops field test and water quality treatment for fishes living before monitoring to serviceable places. Furthermore, the products of bioextracts had been applied to green area forKallapaphruek treesalong all the roads atKhon Kaen University. The satisfactory on using project products of the two target institutions ofKhaen Thong Childrens Home (Khon Kaen) and Srisangwankhonkaen Schoolwere 85.8% and 88.5% respectively, evaluated by the expert board of nine committees.
Determine of Moisture Content for Rough Rice Single Kernel by Visible/NIR Spectroscopy
Authors: Heman Adcha , Hsieh Ching Lu
Published: May 2014

Moisture content (MC) of rough rice directly affects rice quality and its market value. This study applied spectroscopy both in visible 400-700 nm and NIR 700-1050 nm bands to record spectrum of rough rice single kernel (SK). Tainan No.11 medium rice randomly collected from field. After machine harvested, it was used in the tests and they were conditioned by oven to five MC levels ranging from 10.2 to 35.9%. Two regression methods, multiple linear regressions (MLR) and partial least square regression (PLSR), were applied to develop calibration models. Among 7 tested models were found that PLSR model of first differential with 21 gap points, which are rc=0.98, SEC=1.1% for calibration and rp=0.96, SEP=1.9% for prediction. The results suggested average accuracy for the best model was about 98.4% in 400-1050 nm wavelength.
Total Phenolic and Flavonoid Contents of Soybean Fermentation by Bacillus subtilis SB-MYP-1
Authors: Samruan Warunya , Gasaluck Piyawan , Oonsivilai Ratchadaporn
Published: May 2014

Various fermented soybean, as functional food products, are widely available in worldwide. Total phenolic and flavonoids contents containing in soybean are the potentially health benefit components. In addition, soybean fermentation could enhance the amount of these components. Therefore this study is focused on comparison of total phenolic and flavonoid contents between fermented soybean processed by the application ofBacillus subtilis SB-MYP-1.Soybean and soybean crude extracts that prepared by water and ethanol solvent. The total phenolic and flavonoid contents of fermented soybean crude extracts (FSB) were found significantly higher (p< 0.05) than soybean crude extract (SB). Ethanol FSB showed the highest total phenolic and flavonoid contents at 35.02±0.60 mg gallic acid equivalent/g extract and 14.02±0.66 mg catechin equivalent/g extract while as ethanol SB showed total phenolic and flavonoid contents at 16.94 ± 0.77 mg gallic acid equivalent/g extract and 8.77±0.21 mg catechin equivalent/g extract, respectively. In the same way, water FSB showed the highest total phenolic and flavonoid contents at 29.02 ± 1.37 mg gallic acid equivalent/g extract and 7.02 ± 0.61 mg catechin equivalent/g extract while as water SB showed total phenolic and flavonoid contents at 14.43 ± 0.77 mg gallic acid equivalent/g extract and 5.37 ± 0.24 mg catechin equivalent/g extract, respectively. In conclusion, the fermentation process could enhance total phenolic and flavonoid contents in soybean including ethanol extraction gave higher total phenolic and flavonoid contents in crude extracts. Furthermore, functional properties of both water and ethanol crude soybean extracts should be studied in vitro for beneficial in application in food products and dietary supplement in the near future.
Calibration and Accuracy Determination of a Microwave Type Sensor for Measuring Grain Flow
Authors: Eka Putri Renny , Yahya Azmi , Adam Nor Maria , Aziz Samsuzana Abd , Ishola Tajudeen Abiodun
Published: May 2014

Impact type grain flow sensor for crop yield monitoring is known to have problem of some thrown grain by the elevator conveyor in a combine not hitting the sensing impact plate. New technology of microwave solid flow sensor was used to solve the problem of impact-type sensor. A calibration stand with its instrumentation systems to stimulate the actual operation of the clean grain auger in a rice combine had been designed and constructed in this study for the purpose of conducting the calibration and evaluation study of the sensor. Two different solid flow sensor orientations and three different solid flow sensor extrusions were investigated in order to find the best positioning of the sensor on the chute for the measurement. Results from the conducted tests indicates that the best sensor positioning is on totally flat ground at 180o orientation and 8 cm extrusion of the chute cross section (R2=0.9400). Then, the solid flow sensor was tested at seven chute pitch angle positions (i.e-4.5o, -3.0o, -1.5o, 0o, +1.5o, + 3.0o, and +4.5 o), seven chute roll angle positions (i.e-4.5o,-3.0o, -1.5 o, 0o, +1.5o, +3.0 o, and +4.5o). Finally, accuracy tests undertaken to compare the real time measurements against the average flow measurements. ANOVA test shows that both pitch angle and roll angle positions have significant effects on the measurement accuracy of the sensor. The measurement errors increased with increasing roll angles and increasing pitch angle. Conclusively, this conducted laboratory study was able to quantify the measurement accuracy of the SWR Solid Flow sensor for real-time measurement of grain flow under a simulated laboratory rice combine test set-up.
Saccharification of Delignified Sugarcane Bagasse for Lactic Acid Fermentation Using Lactobacillus sp.
Authors: Jonglertjunya Woranart , Srimarut Nattawee , Lukkanakul Nawapol , Sakdaronnarong Chularat , Nasongkla Norased
Published: May 2014

Delignified sugarcane bagasse (SCB) by solvent extraction was carried out at moderate condition (90°C, 4 h) in the presence of acid catalyst. To investigate the dissolution of lignin into solvent, different solvents were utilized during lignin extraction process. Delignified SCB was further hydrolyzed by cell wall degrading enzyme complexes prior to sugar determination. The results showed that n-butanol was the most promising solvent enhancing lignin dissolution which in turn led to highest yield of glucose (63.1% based on treated SCB) and no xylose was detected in hydrolysate. The lignin extraction by n-butanol in the presence of H2SO4and subsequent saccharification process were then scaled up for lactic acid production. The maximum lactic acid was obtained at 25.7 ± 0.2 g/l fromL. caseifermentation after 96 hours when sugarcane bagasse hydrolysate containing 25.6±1.4 g/l initial glucose concentration was used as substrate.
Butanol, Ethanol and Acetone Production from Sugarcane Bagasses by Acid Hydrolysis and Fermentation Using Clostridium sp.
Authors: Jonglertjunya Woranart , Chinwatpaiboon Piyawat , Thambaramee Hathairat , Prayoonyong Paritta
Published: May 2014

Utilization of sugarcane bagasses for butanol, ethanol and acetone production was studied by acid hydrolysis and bacterial fermentation. Glucose, xylose and arabinose contents of sugarcane bagasse hydrolyzed in 5% (v/v) sulfuric acid solution were investigated in respective range of 5 to 60 min. Results showed glucose and xylose released during hydrolysis at 121 C and long treatment time of 60 minutes had high concentrations of 18.7 and 19.8 g/l, respectively. The sugarcane bagasse hydrolysate was then used for butanol, ethanol and acetone production by anaerobic fermentation using C.butyricum, C. sporogenes, C.beijerinckii and C.acetobutylicum. The maximum production based on solvent yield was 4.7 g/l butanol, 6.3 g/l ethanol and 9.7 g/l acetone obtained from fermentation of sugarcane bagasse hydrolysate using C. beijerinckii for 48 hours in the presence of 0.5% (w/v) sugarcane bagasse.
Operation Management: Project Management in Jig and Fixture Industries
Authors: Kowang Tan Owee , Mohd Hamel Nabila Binti , Long Choi Sang , Mohd Rasli Amran Bin
Published: May 2014

The economic growth in Southeast Asia has a number of benefits for downstream industries including jig and fixture fabricators. Jig and fixture fabricators are categorized as small and medium industries that operate based on job-shop manufacturing concept. Meantime, jig and fixture projects are characterized by the unique nature of unforeseeable demand and customized design with multiple objectives. Hence, managing jig and fixture projects is eventually not an easy task. In line with this, this paper aims to develop an objective driven framework that is applicable to jig and fixture industries in Southeast Asia. Thus, the paper reviews various objectives and success factors for jig and fixture projects. The paper subsequently proposes a jig and fixture project management framework based on an objective-oriented project planning and management theory, namely Logical Framework Approach (LFA). The proposed framework is developed based on the concept that generalizations of jig and fixture projects objectives are infeasible. As such, the proposed framework treats projects objective individually. The uniqueness of the proposed framework is the multiple cross links that exist between project management success factors and project objectives. Intrinsically, the proposed framework presents a clearer picture on important factors that contribute towards the success of achieving each projects objective. The proposed framework has descriptive value in terms of studying, classifying and defining the relationships that govern jig and fixture project activities and project objectives.
Processed Parboiled-Rice Product Development Using HoQ Technique
Authors: Kasemset Chompoonoot , Kumpong Nopparat , Wattanutchariya Wassanai
Published: May 2014

This study presented the process of new product development for processed parboiled-rice product using the concept of House of Quality (HoQ) from Quality Function Deployment (QFD) technique. The main tasks were Voice of Customer (VOC) surveying and HoQ development. From VOC, the form of new product was identified as processed parboiled-rice porridge product. The results from HoQ indicated that three aspects were concerned, packaging quality that should be able to maintain quality of food inside the package and prevent the contamination and market place. VOCs were linked into product technical specifications (TS) through relationship matrix between each consumer requirements (CR) and TS, the absolute importance value (Abs.IMP) and relative importance value (Rel.IMP) were calculated. As a results from Rel.IMP found that packaging design (score = 16.05%), type and quantity of raw material (score = 11.13%) and color and appearance of packaging (score = 9.77%) will be firstly consider in the development of parboiled rice porridge product.
Impact of Order Splitting on Bullwhip Effect in Supply Chain: Case of Identical Lead Time at Distributors-Retailer Links
Authors: Sirikasemsuk Kittiwat
Published: May 2014

This research work attempts to establish the bullwhip effect measure under the dual sourcing environment in which the lead time periods of two distributors to fulfill the retailer's orders are identical. Our model was based on the simple three-echelon supply chain with one supplier, two distributors and one retailer for a stationary first-order autoregressive, i.e., AR(1), incoming demand process. It was assumed that the minimum mean-square error forecasting technique and the order-up-to inventory policy were employed in all stages. The impacts of the autoregressive coefficient, the replenishment lead time and the proportion of order quantities placed by the retailer with the two distributors were investigated. A detailed comparison of the bullwhip effect of dual sourcing and that of single sourcing was also provided.
Delivery Planning of Water-Treatment Chemicals in Vendor Managed Inventory Context
Authors: Suttipongkaset Pongpol , Chaovalitwongse Paveena
Published: May 2014

This research aims to improve the operating delivery system of water-treatment chemicals by establishing a chemicals inventory policy for planning appropriate chemicals delivery to five customers in the case study. Currently the company does not exploit tradeoff between transportation cost and inventory holding cost which benefits for cost reduction in terms of inventory management and chemicals delivery. The customers demand for chemicals consumption is uncertain depending on the quality of raw water and production rate. While company has constraints such as limit of transportation truck quantity and inventory review interval by the company. Therefore, for the factors mentioned, this research uses the periodic review system which demand is uncertain as an inventory model. Data from customers chemicals consumption in 2012 is used to conduct the inventory order up to level (OUL) for planning chemicals delivery to customers. Then, the research tests the delivery plan by using Monte Carlo simulation compared to the actual operation data from January to June 2013. It is found that the proposed operating system can reduce inventory cost by up to 33%.
A Pre-Feasibility Study of Limestone Quarry Development for Cement Industry in Cambodia
Authors: Kem Socheat , Pumjan Sunthorn
Published: May 2014

s: Cambodia is a developing country, and mining sector is just started within the last 10 years. Many mining companies have started to explore and carry out the feasibility study amid the scarcity of geological data and technical code of practices. Therefore, the quarry sector is also considered at the early stage in Cambodia, and it is required a standard quarry planning practice. This paper will present the main concepts of (1) quarry operation, development, and design by using the commercial program Minesight to accommodate the mine planning and scheduling. as the result, 25 million ton of limestone was calculated to be a reserve with production of 1 million ton per year; (2) financial model, consisted of cash flow analysis, net present values (NPV), and the Internal Rate of Return (IRR) are the main point for economics consideration. In this point, 47% of internal rate of return was calculated with the net present values of 21.5 million US Dollar and (3) the environmental impact which involves dust, noise, vibration impacts and mine rehabilitation, will be addressed base on the specific local conditions.
Establish the Regional Excellence through the Cluster Development of Small and Medium Manufacturing Industry Center with Effective and Dynamic
Authors: Puspanantasari Putri Erni , Supardi Ir.
Published: May 2014

One of the strategies for developing countries is spurring the development of regional excellence through the development of Small and Medium Manufacturing Industries (SMMI) with a clustering approach. With the industry cluster approach to the potential that exists in the region can develop due to be analyzed in a comprehensive and integral. Industrial cluster is to form an organizational structure for economic development and trade in the global context. Industrial cluster as an instrument of industrial policy is an effective platform to respond to economic decentralization and the development of effective SMMI in Indonesia. With industrial clusters, the potential that exists in the region can be developed in accordance with core competencies possessed.
Cluster development of SMMI center effective and dynamic can be done with some of the following: (1) Industry cluster development approach needs is grown. The essence of the strategy is the creation of a unified and solid cluster to build a synergy to achieve an economic growth with a wide base. (2) With the passage of local autonomy, the SMMI sector plays an important role in national economic development. Open opportunities for local governments to provide facilities for the development of regional advantages (potential territory), including the development of SMMI. For that we need the synergy between the main activities auxiliary activities, and (3) Development of SMMI focused on driving regional economic groups, among which SMMI supporters, SMMI export-oriented group, and SMMI the new initiative.
The motivation and contribution of this research, this research is expected to provide benefits or contribution of in the form of recommendations or fill in cultivate the creation of centers of Small and Medium Industry (SMMI) effective and dynamic, with industrial cluster development approach, in developing areas of excellence in other places. Because with regional autonomy has progressed at this time, it is evident that SMMI sector plays an important role in national economic development. The open opportunities for local governments to provide facilities for the development potential of the region, including the development of SMMI, with clustering approach.
Keywords: regional excellence, cluster development, Small and Medium Manufacturing Industry (SMMI).
Strategic Training Approach to Improve Performance at Workplace
Authors: Abdulrahim Muslimin , Rachman Arief B.
Published: May 2014

The main problem of developing countries is the unpreparedness ready source of labor toward takeoff, the output of formal education in general is not ready to work. As a result, low productivity and lack excelled in competition. In addition, the workers themselves need to follow the development of technology and science, to keep up with other countries. The solution offered to solve the above problem is to do training, there are a variety of ways. The training is being developed is called "Training Strategic Approach". This approach through three stages, namely pre-training, process training, and post-training. Each stage requires several steps according to each company's problems. Companies that have been and are currently applying this method, among others, 70% of mining companies in Indonesia, 85% of large-scale manufacturing companies. Currently other companies began to realize the smaller scale of the importance of improving the performance of labor supported by a conducive working environment Keywords: Training, performance, work environment
The Acid Hydrolysis of Sugarcane Leaves as a Biofeedstook for Bioethanol Production
Authors: Boochapun Supattra , Lamamorphanth Wimonporn , Kamwilaisak Khanita
Published: May 2014

The sugarcane is the one of economic agricultural product in Thailand. The sugarcane leaf is a residual waste from post-harvest process. Conversion of the residual waste to a value material is quite a challenge. The aim of this research work is to extract sugar from the sugarcane leaf by the acid hydrolysis reaction. The hydrolysis conditions were varied in terms of sulfuric acid (H2SO4) concentration (04%, v/v), reaction time (15180 minutes), amount of sugar cane leaves (50-125g/l) with constant incubation temperature at 122 °C. The identification and quantitation analysis of hydrolysed sample was performed by high performance liquid chromatography (HPLC). The result was shown the best hydrolysis condition was at 1% v/v of H2SO4, reaction time 60 min and the sugarcane leaves 100 g / L with ca 17 g/L of xylose, ca 3 g/L of glucose and ca 2 g/L of arabinose. Also, the Scanning Electron Microscopy (SEM) was analysed the morphology of untreated and treated sugarcane leaf which the surface of treated sample showed the broken fibril.
Development of Gelatin-Thai Silk Fibroin Microspheres for Three Dimensional Cell Culture
Authors: Sinthop S. , Patumraj S. , Kanokpanont S.
Published: May 2014

Microspheres have been widely used for tissue engineering scaffolds. Microspheres have many advantages over the macrostructure such as high surface area for cell adhesion and proliferation and low mass transfer limits. In this study, we fabricated microspheres from gelatin and silk fibroin using water-in-oil (w/o) emulsion technique and glutaraldehyde crosslinking. Gelatin (G) and silk fibroin (SF) were blended at different G/SF weight blending ratios of 100/0, 90/10, 70/30, and 50/50. Physical and chemical properties of the microspheres including size and morphology were characterized. The Average size of microspheres obtained were at 858.42±41.93, 832.97± 9.44 , 785.24±17.66 and 735.83 ±13.19 μm, respectively. Morphology of G/SF microspheres was observed under a scanning electron microscope. Blending of silk fibroin increased the crosslinking degrees and water absorption. It also reduced degradation rate, comparing to the gelatin microspheres. Thein vitroattachment and proliferation of rat bone marrow derived mesenchymal stem cells (MSC) cultured on G/SF microspheres were evaluated. G/SF 50/50 microspheres promoted the highest attachment of MSC on microspheres (46.0±5.8% of initial seeding at 6 hr). The G/SF 70/30 microspheres promoted the higher cell proliferation of MSC compared the others. Specific growth rate of the cells on the microspheres was at 9.85x10-3h-1.
Investigations on the Fixed-Bed Column Performance of Acid Brown 75 Adsorption by Surface Modified Fly Ash Granules
Authors: Pansuk Chayada , Vinitnantharat Soydoa
Published: May 2014

Adsorption potential of surface modified granule (SM-G) to remove acid brown 75 (AB 75) from aqueous solution was investigated using fixed-bed column mode. To produce SMG, lignite fly ash was agglomerated into porous granules by an extruder at 800°C and surfacemodified with a cationic surfactant, Hexadecyltrimetylammonium Bromide (HDTMABr). The performance of the fixed-bed column was evaluated to assess the effect of various process variables, viz., of bed height, flow rate and initial feed concentration on breakthrough time and adsorption capacity. The bed depth service time (BDST) model was applied to the data for predicting breakthrough curves and to determine the characteristic parameters. The highest experimental and theoretical bed capacities were obtained to be 55.3 mg of AB 75 adsorbed per gram of SM-G. The results indicated that the SM-G is a suitable adsorbent for the removal of AB 75 from aqueous solution.
Estrogens Removal by Sludge from Enhance Biological Phosphorus Removal System
Authors: Ruchiraset Apaporn , Chinwetkitvanich Sopa
Published: May 2014

This study was to investigate the removal of four estrogens in enhance biological phosphorus removal (EBPR) system. Sludge from four EBPRs were used to investigate both of anaerobic and aerobic conditions. Results showed that EBPR could remove estrogen both under anaerobic and aerobic conditions. In anaerobic condition, estrogens removals were in the range of 7692% for E1 (estrone), 5890% for E2 (17β-estradiol), 4363% for E3 (estrol), and 6288% for EE2 (17α-ethinylestradiol). In aerobic phase, removal of estrogens were ranging from 7996% for E1, 7696% for E2, 3664% for E3, and 5796% of EE2. Sorption onto sludge was the main mechanism of estrogens removal in comparison with biodegradation, which their sorption:biodegradation ratios were around 0.9:0.1 and 0.8:0.2 in anaerobic and aerobic conditions, respectively. Moreover, biotransformation of E2 to E1 was found in every E2-batch experiments that used active sludge.
Methylene Blue Removal from Aqueous Solution by Adsorption on Nitric Acid Modified Water Treatment Sludge
Authors: Potiya Thanatcha , Banjerdkij Peerakarn , Pimpha Nuttaporn
Published: May 2014

Nitric acid modified water treatment sludge (NS) was used as an adsorbent for methylene blue (MB) removal from aqueous solution in a batch experiment system. Surface area and pore volume were characterized by BET-N2 method. Zeta potential measurements of the NS showed a negatively charge which has the potential to attract positively charged molecules. The effect of initial MB concentration and initial pH solution were investigated. When the initial MB concentration was increased, the percentage of MB removal decreased accordingly while the amount of adsorbed MB on NS at equilibrium time (qe) increased. For the effect of initial pH solution, the adsorption of MB was increased with increase in pH. The maximum removal was observed at pH 11. The result indicates that NS can be used as low cost adsorbent in wastewater treatment for cationic dye removal.
Energy Consumption for Brine Solution Recovery in Direct Contact Membrane Distillation
Authors: Chhun Sothyreak , Khongnakorn Watsa , Youravong Wirote
Published: May 2014

Direct contact membrane distillation (DCMD) process was applied for brine solution recovery. The energy consumption of the process was evaluated as varying feed temperature and cross flow velocity (CFV). The evaporation efficiency and energy consumption were also studied. The experiments was carried out using a hollow fiber PVDF membrane with pore size of 0.1 μm and NaCl 3.5 %wt as feed solution. The operating feed temperature and CFV were in range of 40 °C-70 °C and 0.14-0.42 m/s (laminar and transition flow region), respectively. The temperature and CFV of permeate were fixed at 20 °C and 1.97 m/s respectively. It was found that the flux rate was in function with the temperature, CFV and temperature polarization coefficient (TPC). The best result in terms of energy consumption and evaporation efficiency were obtained at CFV and temperature of 0.28 m/s and 70 °C about 188.6 W and 41.1 %, respectively.
Removal of AzO Dye in Water Using Vacuum Ultraviolet (VUV) Process
Authors: Ratpukdi Thunyalux , Boonlerdlon Nadthapon , Nanthakod Banhan , Wonghad Phonrawee
Published: May 2014

Removal of azo dye (Novacron Orange C-3R) in water using vacuum ultraviolet (VUV) process was investigated. The factors affecting the VUV process included concentration of dye, power of VUV and bicarbonate (HCO3-) were studies. Ultraviolet (UV) experiment was also performed for comparison. Initial dye concentrations of 5, 10, and 50 mg/L, VUV powers of 30, 60, and 120 W and bicarbonate 450 and 900 mg/L as CaCO3 were tested. At lamp power of 120 W, VUV process could be reduced 99.85 % of dye and 99% of chemical oxygen demand (COD) while UV process reduced 44.69 % of dye, 50% of COD. Bicarbonate was found to have little impact on dye removal rate.
Turbidity Removl Using Silk Sericin and Silk Sericin Powder as Coagulant Aid
Authors: Makvilay Sidxay , Sanongraj Wipada , Khamwichit Wipawee
Published: May 2014

The main objective of this research is to synthesize silk sericin and silk sericin powder for turbidity removal of synthetic turbid water. Silk sericin used as coagulant aid in this study was extracted from silk cocoons by boiling them with 0.5% (w/w) Na2CO3solution at 90°C for 60 min. Synthetic turbid water with the initial turbidity of about 50 NTU, 75 NTU, and 100 NTU, the turbidity removal efficiencies 89.2±5.41%, 90±3.48% and 87±4.31% respectively. For the powder silk sericin, the turbidity removal efficiencies 96±0.77%, 88±2%, and 96±1.73% respectively. Introduction
The Synthesis of Air Filters from Silk Cocoons Coated TiO2 for Use in Air Purifier
Authors: Wadchasit Pornwimon , Khamwichit Wipawee , Sanongraj Wipada
Published: May 2014

The purpose of this research was to synthesize and form fibroin silk air filter (SF filter) coated and non-coated with titanium dioxide. For use in indoor air pollution treatment. The main air pollutant to be treated is PM2.5. However, VOC removal also investigaed in this study. The synthesis involved degumming process using 0.5 wt % Na2CO3 at 90°C for 60 minutes. Titanium dioxide (TiO2) used in the study was a catalyst Tipaque brand (code A-220 (Anatase)). Results from studying on physical property by scanning electron microscope found that silk fibre was an ununiformly arrangement structure. SF filter coated with TiO2 showed that TiO2 distributed uniformly on the filter. The silk fibroin filters were brought to analyze for the energy band gap in order to find the energy value that the catalyst was needed to stimuate reaction in the photocatalytic process. It was found that TiO2 1-7.5 %(w/v) catalyst coated on the silk fibroin filters had the highest value of light absorption at 390 nanometers, which agreed with the value of energy level in the band gap period of 3.18 eV.The results from efficiency studies of SF filters in the treatment of indoor air pollution (generated from incense fume of 0-2 micron in size) indicated that the best treatment efficiency was 99.76%. In which SF filter non-coated with TiO2 was used, and initial PM2.5 concentration was 5 mg/m3, air flow rate was 3.93 m3/min. Treatment period was 8 hours.