cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.14457/cu.the.2014.35
title: DEHYDRATION AND OXIDATIVE DEHYDROGENATION OF ETHANOL OVER ALUMINA CATALYST MODIFIED WITH SILVER-LITHIUM

description: The research was aimed to investigate the characteristic and catalytic properties of mixed-phase alumina catalysts and Ag/Li modified mixed-phase alumina catalysts. In the first part, ethanol dehydration over mixed-phase alumina catalysts was investigated. The mixed gamma and chi phase alumina prepared by the solvothermal method of the mixed solution (toluene and 1-butanol) displays the attractive chemical and physical properties for the catalytic dehydration of ethanol to ethylene. The high acid site density apparently results in high catalytic activity for the mixed ɣ- and χ- alumina with 50 wt% of ɣ- and χ phases (CHI50). Moreover, the large amount of the adsorbed water on alumina surface can result in increased ethylene selectivity as observed by XPS analysis. In the second part, the influences of Ag/Li modification on mixed-phase alumina was investigated for oxidative dehydrogenation of ethanol to acetaldehyde. The result shows that high catalytic activity and acetaldehyde selectivity for Ag/Li modified the mixed ɣ- and χ- alumina with 50 wt% of ɣ- and χ phases (AgLi-CHI50) corresponded to the oxidation state and reduction behavior. In addition, in order to investigate surface-structure sensitive on silver catalyst, the adsorption of H2O onto the A and B type steps on an Ag single crystal by temperature programmed desorption was studied. A silver curved crystal represents a continuous range of surfaces structures ranging from [5(111)x(100)] via (111) to [5(111)x(110)]. LEED and STM studies verify that the curvature of sample results predominantly from monoatomic steps. For submonolayer of H2O coverage, a small and linear dependence of the desorption temperature on the A and B step density were observed
DOI: 10.14457/cu.the.2014.36
title: EFFECTS OF MORPHOLOGY OF POLY(BUTYLENE TEREPHTHALATE) ON THERMAL PROPERTIES AND STRUCTURE OF POLY(LACTIC ACID) MICROPOROUS FILMS FABRICATED BY BIAXIAL STRETCHING TECHNIQUE

description: The aim of this research is to investigate the effects of morphology including shape and size of dispersed phase on the properties of microporous films fabricated by biaxial stretching technique. The microporous films were prepared from the composites containing poly(lactic acid) (PLA) as a polymer matrix and poly(butylene terephthalate) (PBT) as a dispersed phase. The composites containing spherical and fibrous PBT with different particle and fiber sizes were prepared by adjusting initial composition, mixing temperature and mixing protocol of internal batch mixer and capillary rheometer. Scanning electron microscopic results show that PBT fibers can be produced by melt-stretching and subsequently fast quenching. Rheological characterization confirms the random network structure of PBT fibers. Moreover, it is found that PBT is a nucleating agent accelerating the crystallization rate of PLA, particularly PBT fibers having large specific surface area. The stretched films composed of spherical particles exhibit the ellipsoidal microvoids owing to interfacial debonding of polymer chains. The size of spherical PBT particles affects the void size but not influences the void content of the stretched films. The void content considerably increases to about 8% for the stretched films containing dispersed fiber because of the localized deformation between interdigitated fibers. In addition, the stretched films have increased crystallinity and reduced heat of cold crystallization as a result of strain-induced crystallization, especially at high stretching ratio.
DOI: 10.14457/cu.the.2014.38
title: SEISMICITY OF CENTRAL NORTHERN THAILAND FROM 1999-2010 SEISMIC DATA OF THE KAENG SUA TEN SEISMOGRAPHIC NETWORK

description: This thesis studies the characteristics of present-day earthquakes in northern Thailand from instrumental data recorded at the Kaeng Sua Ten seismographic network, Royal Irrigation Department, by relocating the earthquake location from event primary and secondary waves arriving times and the Triangulation method, from origin time of 128 earthquakes during the year 1999 to 2010. The result of this study confirms that the earthquakes in the study area consist of small earthquake less than 4.9 on Richter magnitude scale and are shallow earthquakes with depth ranges from 0-61 kilometer. The earthquakes mostly have the magnitudes of 3-4.9. When considering those within 50 kilometers of the network center, it is found that the distribution of the earthquakes location is clearly and significantly associated with the fault zones of northern Thailand. However, some of the smaller than magnitude 3 and shallower than 10 kilometers which can be considered to be the back-ground earthquake did not relate to any lineament on the ground surface. The study also can be concluded that the highest seismic risk area is covered by latitude 18.75o-19.75o N and longitude 98.75o-99.75o E, based on Gutenberg-Richter relationship where the b-value is 0.59 which is smaller than the previously reported. The newly located epicenter of the Kaeng Sua Ten seismographic network’s when compared to the previously located data and with those of Thai Meteorological Department are different both in the epicenter location and the magnitude. The newly located epicenters correlate better to the existing active fault locations.
DOI: 10.17632/mgd4h2vnzd.1
title: Data on Integrating Multidimensional Dependability with the Technology Acceptance Model

description: This is raw and analysis data for empirical study, entitled entitled “Integrating Multidimensional Dependability with the Technology Acceptance Model: A Study of Adoption of Cloud Computing at the Organizational Level”. This study investigated how perceived dependability affects user acceptance by integrating perceived dependability with the technology acceptance model in the context of cloud computing. In this study, perceived dependability was treated as a multi-dimensional variable and conceptualized as a second-order construct. A total of 216 samples (organizational managers) were analyzed using the structural equation modeling. IBM SPSS AMOS 23 tool was used for data analysis. (1) File 1: Survey questionnaire in Korean : This is a Korean version. If you want a English version, you can check "Appendix A." in our original article. (2) File 2: DATASET (216_including item parceling) : You can use this file for your analysis. This spss file also contains the values obtained from item parceling technique this study used. (3) File 3 ~ 6 : These files are the results of using Excel to calculate CR and AVE values. This data is valuable because no other research have considered the multidimensional approach to dependability. These empirical data can provide academic researchers and businesses with insights on organizational level adoption of cloud computing.
DOI: 10.17632/mgd4h2vnzd.2
title: Data on Integrating Multidimensional Dependability with the Technology Acceptance Model

description: This is raw and analysis data for empirical study, entitled entitled “Integrating Multidimensional Dependability with the Technology Acceptance Model: A Study of Adoption of Cloud Computing at the Organizational Level”. This study investigated how perceived dependability affects user acceptance by integrating perceived dependability with the technology acceptance model in the context of cloud computing. In this study, perceived dependability was treated as a multi-dimensional variable and conceptualized as a second-order construct. A total of 216 samples (organizational managers) were analyzed using the structural equation modeling. IBM SPSS AMOS 23 tool was used for data analysis. For file 1 (1. Survey in Korean), this is a Korean version. If researchers want a English version, they can use "Appendix A." in our original article. For file 2 (2. DATASET (216)), researchers can use this for their own analysis contexts. This spss file also contains the values obtained from item parceling technique this study used. For other files (file 3, 4, 5, 6), they are the results of using Excel to calculate CR and AVE values. This data is valuable because no other research have empirically considered the multidimensional approach to dependability. These empirical data can provide academic researchers and businesses with insights on organizational level adoption of cloud computing.
DOI: 10.17632/t79579r9rn.1
title: Modeling of Steam-Foam Flooding in Mecca Lease Field in Kern River California

description: This dataset has been used to present modeling of hybrid thermal recovery in a heavy oil reservoir using steam-foam method. The main mechanism is to control the mobility of steam and deliver proper amount of heat to reservoir in order to reduce oil viscosity. The results illustrated that a considerable increase in oil recovery is obtained when steam-foam is used. It is also observed that foam parameters, which was used in modeling, affects oil recovery, reservoir temperature, pressure, and gas saturation. Optimized foam parameters were determined using oil recovery, reservoir temperature, and average reservoir pressure. Finally, simulations revealed that field and simulation results were in good agreement with the field data, and that steam-foam oil recovery method has the potential to become a promising oil recovery method for heavy oil reservoirs.
DOI: 10.17632/t79579r9rn.2
title: Modeling of Steam-Foam Flooding in Mecca Lease Field in Kern River California

description: This dataset has been used to present modeling of hybrid thermal recovery in a heavy oil reservoir using steam-foam method. The main mechanism is to control the mobility of steam and deliver proper amount of heat to reservoir in order to reduce oil viscosity. The results illustrated that a considerable increase in oil recovery is obtained when steam-foam is used. It is also observed that foam parameters, which was used in modeling, affects oil recovery, reservoir temperature, pressure, and gas saturation. Optimized foam parameters were determined using oil recovery, reservoir temperature, and average reservoir pressure. Finally, simulations revealed that field and simulation results were in good agreement with the field data, and that steam-foam oil recovery method has the potential to become a promising oil recovery method for heavy oil reservoirs.
DOI: 10.14457/cu.the.2014.39
title: EFFECTS OF ANTIPHYTOPATHOGENIC AGENTS FROM PLANT EXTRACTS ON Dendrobium 'Pompadour'

description: The hexane, CH2Cl2, EtOAc, CH3OH extracts, and the essential oils from nineteen plants, and 3 selected compounds were tested for preliminary anti-orchid pathogenic microorganism screening on Dendrobium 'Pompadour'. The extracts from Garcinia mangostana, Cinnamomum porrectum and Echinochloa colona showed good tendency to inhibit bacterial disease in orchids. gamma-Mangostin from G. mangostana and the essential oil from C. porrectum revealed the best inhibition against Burkholderia gladioli. Using bioassay-guide, the separation of the CH2Cl2 extract from E. colona yielded an active compound: undecanoic acid. In addition, the essential oil from Zingiber cassumunar and gamma-mangostin showed high potential antifungal activity against Phytophthora palmivora, but showing not good results against Fusarium oxysporum. The in vitro antipathogenic tests in orchid Dendrobium sp. tissue culture revealed that the CH2Cl2 extract from E. colona and gamma-mangostin had good potential to inhibit B. gladioli and P. palmivora, respectively
DOI: 10.14457/cu.the.2014.40
title: DISTRIBUTED POSITIONING OF REPLICA USING GRASS GROWING STRUCTURE

description: Data Replication is a common technique used to enhance the performance of data access in distributed systems. There are many efficient replica schemes involved in replication technique such as replication strategy, replica selection strategy to find the best fit replica, replication consistency, and replica positioning mechanisms This thesis focuses on a distributed data replication technique based on Grass Growing Structure to reduce bandwidth consumption and access latency. The replication will be multicast to the nearest nodes within predefined limiting distance using Depth Limit Search algorithm. The proposed algorithm is then compared with centralized, flooding, multi-master and random walk algorithms. Evaluation is carried out by a simulation using OptorSim to run on standard benchmarking testbeds, namely, EU Data Grid Testbed, CMS Testbed and GridPP Testbed. Performance measurement is done based on a number of network metrics such as mean job time, effective network usage, local file access, and Band width usage. Result statistics show that the Grass Growing Structure performs better than all comparative algorithms which will entail energy conservation in network data distribution.
DOI: 10.14457/cu.the.2014.41
title: CONVERSION OF GLYCEROL TO ACRYLIC ACID OVER POLYOXOMETALATE CATALYSTS

description: This work was carried out to convert glycerol to acrylic acid in liquid phase over supported polyoxometalate (POM) catalysts. The investigated parameters were H2O2 concentration (2.74-6.85 mol/L), reaction temperatures (70-90 oC), POM types (PW, PMo, SiW), support types (Al2O3, SiO2, HZSM-5) and the catalyst to glycerol ratio (2-8 wt%). It was found that the SiW/HZSM-5 catalyst can enhance the conversion of glycerol of around 85.54% at H2O2 concentration of 2.74 mol/L, temperature of 90 oC, the catalyst to glycerol of 4 wt.%. The doping of vanadium (V) at 6 wt.% on the surface of SiW/HZSM-5 (V6-SiW/HZSM-5) catalyst can promote the conversion of glycerol up to 99.67% and provide the yield of glycolic acid, formic acid, acetic acid, acrolein, acrylic acid and propionic acid of 19.45%, 12.03%, 23.62%, 0.25%, 36.23% and 7.06%, respectively. The rate of glycerol conversion was fit with a pseudo-first order reaction with respect to glycerol concentration, with the activation energy of 26.63 kJ/mol. The Eley-Rideal model, assuming a reaction between adsorbed oxygen molecule, obtained from H2O2 dissociation, and glycerol molecule provided the best fit with the experimental results.
DOI: 10.14457/cu.the.2014.42
title: STABILITY OF GOLD NANOPARTICLES AND THEIR INHIBITORY EFFECT ON AMYLOID-β1-42 PROTEIN AGGREGATION

description: Aggregation of amyloid-β (Aβ) protein is known as the neurotoxicity involving in Alzheimer's disease (AD). Thus, prevention or reduction of Aβ aggregation would be a therapeutic strategy for AD. Gold nanoparticles (AuNPs) is considered to be a tool for AD treatment due to optical and biocompatible properties including ability to cross blood-brain barrier. In this study, citrate-stabilized AuNPs (AuCt) and polyethyleneimine-stabilized AuNPs (AuPEI) were synthesized and determined for their stability. Nanoparticle sizes of AuNPs were characterized by UV-vis spectroscopy, transmission electron microscopy (TEM) and dynamic light scattering (DLS). The zeta potentials of AuNPs were determined by laser electrophoresis. The inhibitory effects of AuNPs on amyloid-β1-42 (Aβ1-42) aggregation and zinc-induced Aβ1-42 aggregation were examined using Thioflavin T fluorescence assay, and the appearance of aggregates were also observed under TEM. From the results, hydrodynamic diameters of AuCt and AuPEI obtained from DLS were 18.37 ± 0.34 nm and 18.59 ± 0.59 nm, respectively. The zeta potentials of AuCt and AuPEI were -35.37 ± 2.56 mV and 38.00 ± 1.68 mV, in orderly. Moreover, TEM analysis showed that AuPEI were smaller and less in size distribution than AuCt. After time storage, AuPEI were found to be more stable than AuCt. Both AuCt and AuPEI exhibited the inhibitory effect on Aβ1-42 aggregation and zinc-induced Aβ1-42 aggregation. However, AuCt had less inhibitory effect on the aggregation as compared to AuPEI. Increasing concentrations of AuCt and AuPEI AuNPS resulted in higher inhibitory effect on the aggregation. These results were in parallel with TEM images. Hence, the potential of AuNPs on inhibition of Aβ1-42 aggregation seemed to depend on the surface charges and concentrations of nanoparticles. The inhibitory mechanism of AuNPs on Aβ1-42 aggregates should be further clarified
DOI: 10.14457/cu.the.2014.43
title: EFFECT OF DOSE AND DURATION OF DPTA NONOate TREATMENT ON HUMAN LUNG CANCER STEM CELL PHENOTYPE INDUCTION

description: Tremendous advances have been made in the treatment of cancers during the past decades, but success rate among cancer patients is still dismal, largely due to problems associated with chemo/radio-resistance and relapse. Emerging evidence has indicated that cancer stem cells (CSCs) are behind the resistance and recurrence problems, but our understanding of their regulation is limited. Rapid reversible changes of CSC-like cells within tumors may result from the effect of biological mediators found in tumor microenvironment. This research showed how nitric oxide (NO), a key cellular modulator whose level is elevated in many tumors, affect CSC-like phenotypes of human non-small-cell lung carcinoma (NSCLC) H292 and H460 cells. Exposure of NO gradually altered the cell morphology towards mesenchymal stem-like shape. NO exposure promoted CSC-like phenotype indicated by increased expression of known CSC markers, CD133 and ALDH1A1, in the exposed cells. These effects of NO on stemness were reversible after cessation of the NO treatment for 7 days. Furthermore, such effect was reproducible using another NO-donor, SNAP. Importantly, inhibition of NO by the known NO scavenger PTIO strongly inhibited cellular CSC-like phenotype. Lastly, this research unveiled the underlying mechanism of NO action through the activation of caveolin-1 (Cav-1), which is up regulated by NO and is responsible for the aggressive behavior of the cells. These findings indicate a novel role of NO in CSC regulation and its importance in aggressive cancer behaviors through Cav-1 up regulation.
DOI: 10.14457/cu.the.2014.44
title: THE DEVELOPMENT OF SCREENING TOOL FOR PREDICTING NECK PAIN AND DISABILITY IN OFFICE WORKERS

description: New version of thesis.
DOI: 10.14457/cu.the.2014.45
title: STAKEHOLDER ANALYSIS IN GLOBAL AIDS PROGRAM(THAILAND MOPH-U.S. CDC COLLABORATIONS)

description: This thesis aim to do the stakeholder analysis by study the goals, needs and requirements, the level of satisfaction and the expectations in the future collaborations that the stakeholders wish to share with the Global AIDS Program. The study used qualitative approach through self-administered questionnaire and in-depth interview of all fourteen stakeholders of the Global AIDS Program, under Thailand MOPH-U.S. CDC Collaborations. The results of the self-administered questionnaire and in-depth interview of the stakeholders in both management level and operational level share the same satisfactory result toward the collaboration with the Thailand MOPH-U.S. CDC Collaboration. The issues that rose are the planning (policy, direction, share the lesson learned, future expansion, and cost- effectiveness analysis), people (concerns in both quantity and quality), database/information system, and funding. It is to be advised that after the end of the new cooperative agreement phase 3 (year 2016), this kind of study should be conducted right after the end of the Cooperative Agreement so that staffs are still able to contact, their memories are able to be recalled and expressed their experiences. The in-depth interview is a powerful tool to gain lots of ideas especially some topics that people might avoid to answer in the self-administered questionnaire or where the rating was conflicts, however, some sensitive questions had to be aware and find the alternative ways to answer. If there are more time and resources available, the study should also covered the 360 degrees' view point from non-governmental organizations (NGOs), the HIV/AIDS patients and the donors to get all the perspective from related parties.
DOI: 10.14457/cu.the.2014.46
title: THE CITY IN JANE AUSTEN'S SENSE AND SENSIBILITY, MANSFIELD PARK AND NORTHANGER ABBEY

description: A number of Jane Austen's biographers and literary critics have suggested that Austen disliked the city. Their conclusion is largely drawn from her letters and her negative portrayal of the city in her novels which fits the enduring image of the city as a place of moral corruption and vice. This thesis will argue that although Austen did prefer rural to urban life, she was not blind to the variety that the city offered and that her novels portray not only negative but also positive aspects of the city. The thesis employs Peter Borsay's history in The English Urban Renaissance: Culture and Society in the Provincial Town 1660-1770 (1989) which illustrates the economic, social and cultural revival of the city in the long eighteenth century (1660-1830), which contributed to new image of the city as a place of progress, civilisation and pleasure, and Raymond Williams' argument in The Country and the City (1973) against the age-old binary opposition of the country as representing peace and virtue and the city as representing vice and moral corruption. By analysing Sense and Sensibility (1811), Northanger Abbey (1818) and Mansfield Park (1814) in the socio-cultural context of the long eighteenth century, the thesis seeks to illustrate the complex or even positive portrayal of the city in these selected novels, showing that the depiction of London in the first novel is different from that in the sentimental novel which it satirises and also how the ways in which the picture of the dangerous city in Northanger Abbey is ameliorated through Austen's satirical presentation of the heroine's rural characteristics and how the urban intruders in the last novel can be both destructive and beneficial to the countryside.
DOI: 10.14457/cu.the.2014.47
title: PROMOTING ORGANIC FARMING FOR FARMERS' EMPOWERMENT: THE ROLE OF GOVERNMENT IN SOUTH KOREA AND THAILAND

description: In the upsurge of international food crisis, intensifying environmental hazards, and protracting setback of agricultural industry, organic farming emerged as an alternative to the shortcomings of conventional farming. Increasing awareness of food security and well-being has stimulated the growth of organic agriculture in the international community, and various studies have corroborated the widely held belief that organic agriculture bears more economic benefits and empowerment to the farmers. Although Thailand has been a pioneer in instigating organic efforts in Southeast Asia, absence of a stable guiding system and effective governance has left the organic agriculture at an infant stage despite rich resources in vast arable land. Among different key actors that constitute the organic network, the research will focus on the role of government as a guiding and supporting entity that supports the promotion of organic agriculture in technology, seed money, education, as well as establishing and governing a stable organic development system for the farmers is crucial to develop the infant organic industry. In light of this, this research will take extensive investigation into the role of government in systemizing and providing workable institutional support for promotion of organic agriculture in Thailand, through assessment of South Korea’s organic promotional policies and a case study on a village that has developed through government assistance. Through comparisons, the research will conclude with a discussion of what kind of policies can be applied from the South Korean model, and suggest policy recommendations for further improvements.