cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.14457/cu.the.2012.687
title: Effect of zinc supplementation on tumor necrosis factor-alpha in type2 diabetic patients with metabolic syndrome

description: The purpose of this study was to investigate the effects of zinc supplementation on the levels of plasma zinc, plasma TNF-α, transmembrane TNF-α (tmTNF-α) in peripheral blood mononuclear cells (PBMC), fasting blood sugar (FBS), hemoglobin A1c (HbA1c), triglycerides (TG), total cholesterol (TC), high-density lipoprotein cholesterol (HDL-C), and low-density lipoprotein cholesterol (LDL-C) in type 2 diabetic patients with metabolic syndrome (MS). Twenty-three type 2 diabetic patients who had MS diagnosed by the International Diabetes Federation criteria were included in the study. They were divided into 2 groups, the zinc group (supplemented with zinc sulfate equivalent to elemental zinc 30 mg/d, n = 10) and the control group (supplemented with placebo equivalent to corn starch 132 mg/d, n = 11) for 8 weeks. At baseline and at week 8, fasting blood samples were collected to determine biochemical parameters. PBMC were isolated for tmTNF-α analysis. Anthropometric parameters and blood pressure were also measured. Furthermore, the patients completed questionnaires about the dietary pattern intake in the past 1 month and 24-hour dietary recall. The results of the study showed that after zinc supplementation for 8 weeks, the plasma zinc levels were significantly increased from the baseline (p &lt; 0.001) and were significantly higher than those in the placebo group (p = 0.001). The FBS levels were significantly reduced from the baseline (p = 0.007) after zinc supplementation; however, there was no significant difference from those in the placebo group. At week 8, the levels of plasma TNF-α, tmTNF-α in PBMC, HbA1c, TG, TC, HDL-C, LDL-C, waist circumference, weight, BMI, and blood pressure in both groups were not significantly changed from baseline. The levels of these parameters were not significantly differences between groups at baseline and week 8. No severe adverse effect of zinc supplementation was found. This study showed that zinc supplementation at the dose of 30 mg/day for 8 weeks offered a therapeutic approach in maintaining plasma zinc and controlling blood sugar levels in type 2 diabetic patients with MS.
DOI: 10.14457/cu.the.2012.688
title: Design of membrane reactor for steam methane reforming based on non-uniform catalyst and membrane distribution

description: Membrane reactor was one of the multifunctional reactors used to simultaneously synthesize and purify a desirable chemical product. It could also be used for hydrogen generation via steam methane reforming reaction. In the conventional membrane reactor, membrane and catalyst were uniformly distributed along the reactor length. This configuration could not actually offer optimum performance since membrane area near the fuel gas entrance was not fully utilized due to low hydrogen partial pressure at the retentate chamber near the gas entrance. By the reason above, the membrane reactor with the distribution of membrane allocation and catalyst distribution were proposed to resolve these issues. In this work, membrane reactor was divided into two sections. Each reactor section contained different catalyst density and membrane area; however, to standardize this study, the total amount of catalyst density and membrane area were kept at constant values. Methane conversion and hydrogen yield were considered as the performance indicators. The results from this study indicated that, as the hydrogen permeability through the membrane was low, non-uniform membrane distribution membrane reactor could offer significantly higher performance compared to uniform distribution membrane reactor. However, the effect of catalyst packing distribution did not significantly affect the performance of non-uniform distribution membrane reactor.
DOI: 10.14457/cu.the.2012.689
title: Development of polycarbonate/acrylonitrile styrene acrylate blends for outdoor applications

description: In this research,It aims to develop polycarbonate (PC) and acrylonitrile-styrene-acrylate (ASA) blends for high impact resistant products for outdoor applications. PC/ASA were blended at various grades of ASA (3 grades at impact strength and melt flow index different, i.e. ASA-997, ASA-978 and ASA-777)and compositions (i.e. containing 50- 90 wt% of PC) to investigate the effect of ASA grades and blend compositions on phycical, mechanical and thermal properties. The storage modulus at room temperature of all PC/ASA blends from dynamic mechanical analysis steadily increased with an increasing of PC contents. Moreover, PC/ASA-997 showed the highest modulus from the other PC/ASA blends system, i.e. PC/ASA-978 and PC/ASA-777. Glass transition temperatures (Tg) of all PC/ASA blends revealed that Tg of both PC-rich phase and ASA-rich phase slightly shifted towards each other with increasing amount of the PC. It showed that, PC/ASA blend can be classified as a partially miscible. Furthermore, notched Izod impact strength from impact tester of all PC/ASA blends clearly increased with an increasing PC contents in these polymer blends that PC/ASA-997 blend was also shown the highest impact strength. Whereas, PC/ASA-777 showed the highest melt flow index. The melt flow index of all PC/ASA blends distinctly incresed with an increasing amout of ASA in the blend. In particular, ASA was found to significantly improve the color and the impact strength retention of pure PC. From result of QUV exposure, a time period up to 3 week in QUV, the impact strength retention after weathering test increased with an increasing ASA content from 77% to 91% for 10 wt% to 50 wt% of ASA content, respectively. These evidences indicated that ASA can improve weatherability of these blends.
DOI: 10.14457/cu.the.2012.690
title: Application of mathematic functions for identifying the joint pay-off in material procurement negotiation

description: Negotiation is an essential process in material procurement to achieve a final agreement between contractor and supplier. Several researches attempt to improve the negotiation process of construction material procurement. For example, the use of genetic algorithm to identifying the joint pay-off that both parties agree. However, this method still has limitations due to the complexity of calculation and the difficulty of understanding. Meanwhile, the mathematical function is easy to understand and can be used as an alternative method to identify the optimum joint pay-off point. In addition, negotiation by each party may have a different target or weight on each issue. Thus, the issues for negotiation and weight of each issue should be studied and define as a guideline. This research aims to apply the mathematical functions for calculating the optimum joint pay-off that is agreed by both parties. Research started with questionnaire design and interview on the topics related to material procurement process, material buy from contractor and issues that are used for negotiating construction material. The result of interview with 35 experts on material procurement found that six important issues for material negotiation are price, advance payment, credit term, payment period, delivery mode and freight. Then, researcher selected the three materials for conducting case study. There are aggregate stone, cement and ready-mixed concrete. Next, the data is collected from in-depth interview with contractors and suppliers for identifying weight and developing the function between the percent pay-off and options in each issue. These functions were the foundation of identifying joint pay-off for negotiating material. The resulf from analytical hierarchical process (AHP) found that price is perceived as the most important issue whereas other issues are perceived the different weight due to the material type and the ability of contractor. In addition, the result found that the mathematical functions can be used to calculate the optimum joint pay-off for negotiating construction materials
DOI: 10.14469/hpc/6092
title: C10 CASSCF(12,12)/6-31G(d) =&gt; 73.3%

description: Gaussian Calculation
DOI: 10.14457/cu.the.2012.691
title: Effectiveness evaluation of electro-chemical chloride extraction in reinforced concrete

description: Rehabilitating the reinforced concrete structure contaminated with chloride from the marine environment was always interesting research. Electrochemical chloride extraction (ECE) is one of beneficial options. However, the feasibility and effectiveness of it is still on arguing, especially in concrete using mineral admixtures and concrete satisfied the requirement for using in marine environment according to ACI 318 which has low water to binder ratio. In this study, ECE was applied in plain OPC concrete, fly ash concrete with 30% of fly ash by weight of binder, limestone fly ash concrete with 25% fly ash and 5% limestone powder by weight of binder, respectively. Water/binder ratio was 0.4, minimum strength 35MPa. Two percentage of sodium chloride by weight of binder was added in mixing water to supply chloride. The results indicated that, all three types of concrete showed that, after extracting 30-40% of initial chloride content in concrete, even thought average remained chloride in concrete was still higher than critical value of chloride in concrete, embedded steel in concrete was shown the delete low corrosion risk stage. Moreover, it also indicated that the contribution of calcium ion on the current flow during extracting process electrical current on extracting process was insignificant; meanwhile, hydroxyl, sulfate, chloride, sodium and potassium played the main role on transferring the charge.
DOI: 10.14457/cu.the.2012.692
title: Thermal and mechanical properties of highly–filled alumina-polybenzoxazine composites

description: This research aims to study thermal and mechanical properties of highly filled alumina composites utilizing polybenzoxazine as a matrix. The condition for the compression molding to produce highly filled alumina-polybenzoxazine composites was at the temperature of 200oC, and the pressure of 15 MPa in a hydraulic hot-press machine for 2 hours to assure a fully cured specimen. The composition of alumina ﬁller was achieved to be in the range of 50 to 83% by weight. The densities of the obtained composites were found to be in a range of 1.19-2.811g/cm3 as predicted by rule of mixture. The experimental results revealed that at the maximum alumina content of 83wt% or 60vol% filled in the polybenzoxazine, storage modulus at room temperature of the specimen was raised from 5.9 GPa of the neat polybenzoxazine up to about 45.3GPa in the composites which is about 600% improvement.The glass-transition temperatures (Tg) of the prepared composites were observed to be ranging from 178 to 188oC and the values substantially increased with increasing the alumina contents. The degradation temperature (Td) of the prepared composites were observed to be ranging from 336 to 389oC. Furthermore, at alumina content of 83wt% in the polybenzoxazine, the composite’s ﬂexural modulus and flexural strength were found to be as high as 36.4GPa and 142.42MPa, respectively, whereas the Vickers hardness was determined to be as high as 1124 MPa. Water absorption of this filled system was relatively low with the value of about 0.054% at 24 hours. Consequently, the data on thermal propertiesand mechanical properties of the alumina filled polybenzoxazine composites are highly attractive for wear resistance and electronic applications.
DOI: 10.14469/hpc/6093
title: C10 CASSCF(14,14)/6-31G(d) =&gt; 65.9%

description: Gaussian Calculation
DOI: 10.14469/hpc/6094
title: C10 CASSCF(10,10)/6-31G(d) =&gt; 80.4%

description: Gaussian Calculation
DOI: 10.14457/cu.the.2012.693
title: The effect of foam stability in CO₂-Foam flooding

description: CO₂-foam flooding is implemented in order to minimize drawbacks of solely CO₂ flooding by reducing high mobility of CO₂ that could result in impoverishing of ultimate oil recovery. Surfactant solution and CO₂ gas are co-injected simultaneously to generate foam. Foam creates smoother flood front than performing only gas injection. When CO₂-foam contacts with the oil, foam bubbles are weaken and eventually ruptured. Encapsulated CO₂ in those bubbles therefore comes out and be miscible with oil in suitable conditions. This study shows that CO₂-foam flooding yields higher oil recovery factor in the range of 1 to 13% compared to the use of solely CO₂. Performance of CO₂-foam flooding is dependent on many factors. Foam stability is one of the interest parameters but from the simulation results, varying of foam stability slightly affects to the flooding performance. Hence, foam stability might not be one of the first parameters to consider when foam flooding is planned for any field. CO₂-foam application is favorable when reservoir wettability is in the range water-wet condition. For reservoir rocks that possess oil-wet condition, solely CO₂ flooding shows similar or even better result compared to CO₂-foam flooding. Oil composition also affects CO₂-foam. Benefit from CO₂-foam over CO₂ flooding is greater when the hydrocarbon in reservoir contains low intermediate component. The best strategy for CO₂-foam flooding is injecting a whole one slug of CO₂-foam and chasing by water. Dividing foam slug into smaller slugs does not yield any satisfactory results.
DOI: 10.14457/cu.the.2012.694
title: Development of international strategic planning for Malaysian contractors

description: International constructions provide the opportunity for Malaysian contractors to participate in overseas project. However, it is not an easy task to get involved in the international construction market. In order to become a successful company, a proper and strong strategic planning is needed. Therefore this study aims to suggest the potential strategic planning for Malaysian contractors to operate in overseas project. The research begins with reviewing the strengths and weaknesses as well as the opportunities and threats of the Malaysian contractors that have been involved in the international construction projects previously. The methodologies adopted for the study are in-depth interview with the companies’ representatives followed by the questionnaire survey and round table discussion with government and private bodies in Malaysia. The result shows that having good track records from previous project is one of the main strengths. Meanwhile, the low labour productivity is the main weaknesses. Moreover, the strong economic growth of developing countries increases the opportunities for the Malaysian contractors to penetrate in overseas projects. However, corruptions in host country influence their involvement in overseas construction. Thus, contractors need to prepare themselves before penetrate into the international constructions in order to ensure the successfulness of the projects. Furthermore, this research suggested several international strategies such as formation of joint-venture with local companies, recruitment of engineer from host country to work in Malaysia and review of client financial standing
DOI: 10.14457/cu.the.2012.695
title: Chemical physical and mechanical properties of oven – dried mortar after fire exposure

description: Even though concrete is one of the most popular construction materials; however, it also has many cons in use at the same time such as a severe deterioration after subjected to fire exposure. Nowadays, fire accidents occur easily in all over the world including Thailand and almost of structural concrete under fire incidents were diminished, i.e. the mechanical properties caused by a decomposition of chemical compound and changes in physical structure. A series of experiment is conducted for macroscopic specimens in burning process conforming to standard temperature – time curve of ASTM E119, then they are cut in order to investigate the attenuation of chemical properties on less than 0.15 mm diameter powder sample, physical properties on 5 mm cubic and mesoscopic samples for mechanical properties test. The relationships between chemical – physical and physical – mechanical properties are compared with numerical simulation considering the effect of chemical and physical properties on mechanical properties. Based on the results of the current study, the proposed numerical simulation can be used to assess the changes of material model as a function of the residual chemical compound content of mortar samples after high temperature treatment.
DOI: 10.14457/cu.the.2012.696
title: Decision making model for selecting subcontractor relationship in Cambodia construction project

description: The objective of this research is to develop a model that could help main contractor to evaluate subcontractor on selecting short or long-term relationship in Cambodia construction projects. There are 2 stages that need to accomplish in this model development. First, it identified the important factors for selecting subcontractor relationship by interviewing with 35 main contractors who are directors or project managers. From the analysis result, there were ten of twenty two factors that main contractor considered as the important factors for selecting subcontractor relationship namely time control in planning, work quality, cooperation, experience, commitment, resources, honesty, trust, monitoring, and coordination. Second, the model was developed by using Artificial Neural Network (ANN) and Discriminant analysis. Then, the models were developed and selected a suitable method that has the high level of accuracy. The selection of method was based on 10 factors with 93 samplings in which main contractor evaluated subcontractors. The result of ANN model shows the low percentage of root mean squared error (RMSE) around 0.02 and 0.04 for training and testing data set. In discriminant analysis, the percentages of accuracy in estimation are 98.7 % whereas the validations are 83.75 %. Thus, our research takes the neural network as an optimal method for developing a model because this method has given a good result of low error. Finally, this research would be useful in main contractor decision making on selecting subcontractor for developing a long-term relationship.
DOI: 10.14457/cu.the.2012.697
title: Effect of tungsten loading on NiMo/A1₂O₃ and CoMo/A1₂O₃ catalysts for hydroprocessing of biodiesel production

description: In this research, the effect of the addition of tungsten over NiMo and CoMo catalysts supported on alumina for biodiesel production via hydroprocessing was investigated. The experiment was operated at a temperature range of 300-400 ˚C, hydrogen pressure of 40 bar and reaction time from one to four hours using carbided NiMo and CoMo catalysts supported on alumina with and without addition of tungsten. Three types of fatty acid, including of oleic acid, stearic acid and palmitic acid were used as raw materials. From the experimental studies, it was found that addition of tungsten could promote activity and diesel selectivity for both NiMo and CoMo catalysts. Oligomerization products are observed at lower than 350˚C with a short reaction time (normally less than 2 hours) while cracking products are mostly observed at high temperature and/or longer reaction time. The highest diesel yield of 66.9% was achieved for the hydroprocessing of oleic acid using NiMo with the addition of tungsten at 350˚C, 40 bar and 2 hours. Liquid products contained hydrocarbons in a range of C15-C18 and water while gaseous products were carbon monoxide, carbon dioxide and methane.
DOI: 10.14457/cu.the.2012.698
title: Control structure design of isopropyl alcohol dehydration process

description: The design of plantwide control structure for isopropyl alcohol dehydration process using Wongsri’s design procedure is presented. The 8-step design procedure emphasis on design at plantwide level which are establishing a fixture plant, disturbance management for quality control. The process features three distillation columns and uses an extractive distillation with a heavy entrainer. The combined feed of fresh and recycled ethylene glycol is regulated and is ratioed to IPA feed. Each component is handled at their quantifiers. The material disturbances are directed to the desired material pathways for quality control. The designed plantwide control structure performance is comparable to the Luyben’s design.
DOI: 10.17632/t52rjfy2y2.1
title: Survey on cross-border collection of digital evidence from cloud computing

description: The questionnaire was used for research among representatives of Polish law enforcement and justice authorities. The aim of the research was to gather knowledge on the practice of cross-border acquisition of digital evidence, in particular from cloud computing.
DOI: 10.14457/cu.the.2012.699
title: Effect of silane-modified clay on polyethylene/clay nanocomposites prepared by in situ polymerization with zirconocene/mao catalyst

description: Polyethylene is the most widely used commodity plastics because of low production cost, reduced environmental impact and the wide range of application. However, the usage of polyethylene has some restrictions. Polyethylene has low mechanical strength, low thermal resistance, low gas permeability and easy to catch fire. The polymer was added by additive or filler, which that can improve polyethylene properties. Generally, the addition of additive into polymer use micro-size additive but in the recent year, nano-size additive was added to polymer. It was found that the nano-sized additive show better properties than micro-size additive. The addition of nano-sized additive or nanofiller is called polymer nanocomposties. In this research, for the first part of this study, the two different impregnation methods (in situ and ex situ impregnation method) were investigated. For the second part, unmodified and modified by silane compounds were conducted. The properties of polyethylene/clay nanocomposites were also investigated. It found that in situ impregnation method gives higher catalytic activity than ex situ impregnation method. The ex situ impregnation method resulted in maximal thermal properties and crystallization. The nanoclay was modified by tetracholosilane (SiCl4), which it shows the higher activity than unmodified nanoclay.
DOI: 10.14457/cu.the.2012.700
title: Formation of N₂O and SO₃ on mixed metal oxide V-W-Mo/Tio₂ catalyst during the selective reduction of NO by NH₃

description: This research studied the formation of N₂O and SO₃ on mixed metal oxide V-W-Mo/TiO₂ catalyst during the selective reduction of NO by NH₃. This work use a catalyst of previous research (Piyanantarak, 2011) which the TiO₂ support was prepared by sol-gel method and V₂O5, WO₃, MoO₃ were loaded to TiO₂ support by the incipient wetness method. The catalysts have been already characterized by ICP-OES, nitrogen adsorption and NH₃-TPD. In this study the catalysts are additionally characterized by XRD and FT-IR techniques. The performances of V₂O5-WO₃-MoO₃/TiO₂ catalyst are measured in the reaction temperature range 120-450 °C. From the results it can be concluded that the SCR process probably occurred from Eley–Rideal mechanism and this mechanism determines the activity of SCR in the low temperature range. However in the high temperature range the amount of adsorbed NH₃ on surface catalysts determines how much NO conversion can be achieved. The formation of N₂O causes from the reaction between NO and adsorbed NH₃. The oxidation of NH₃ occurs via homogeneous between NH₃ and O₂ and via redox mechanism. The formation of SO₃ does not occur.