cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.5258/soton/d1066
title: Efficient Investigation of Continuous Reaction Processes Using Gradients Data

description: Data for thesis: Efficient Investigation of Continuous Reaction Processes Using Gradients Data folder: Excel spreadsheets of data from each chapter, pre and post processing where used is on same spreadsheet. Origin spreadsheets are present for contour plots. Requires origin to open.Python folder: Python scripts for pump/valve control and data manipulation. Requires python installed to run but can be read with notepad.
DOI: 10.14457/cu.the.2009.2068
title: Preparation of zinc oxide/buyl acrylate nanocomposite latex for coating applicaion

description: Nanocomposite latex of zinc oxide/poly(butyl acrylate) (ZnO/PBA) for coating on fabric was prepared by in situ emulsion polymerization of butyl acrylate in the presence of treated ZnO particles. The ZnO nanoparticles were first grafted with a silane coupling agent, 3-methacryloxylpropyltrimethoxy silane (MPS), in order to improve the interface compatibility between the ZnO and the organic PBA. One end of MPS was facilitated as an initiating point for PBA grafting by using potassium persulfate as an initiator in the presence of nonionic surfactant. The ZnO/PBA composite latex encapsulation was assured by Fourier transform infrared spectroscopy (FT-IR) and transmission electron microscopy (TEM). In the latex, about 162% of PBA were successfully grafted on the surface of ZnO nanoparticles. The composite latex containing 0.3% by wt. of ZnO was fairly stable at room temperature for up to 4 weeks. Furthermore, the ZnO/PBA nanocomposite film displayed UV-shielding properties in both of UV and visible range. But the composite latex did not show any antibacterial activities against both of E. coli (gram negative) and S. aureus (gram positive) bacteria.
DOI: 10.14457/cu.the.2009.2069
title: The significance of personal contacts between the Russian imperial family and the royal court of Siam in the late 19th-early 20th centuries

description: By examining the historical context of colonialism and imperialism at the end of the 19th- beginning of the 20th century, the thesis aims to distinguish the place and role of personal contacts between the Russian Imperial Family and the Siamese Court in the turbulent circumstances of colonial rivalry over Siam. The major goal of the thesis is to enhance a better understanding of the reasons for the inception of close relationships between the Russian Empire and Siam at that period of time and the significance of this friendship in the history of both states. In this respect, the thorough documentary analysis applied in the research methodology is greatly enriched by a vast number of Russian scholarly resources and historical documents that provide valuable information and shed more light on the historical realities in which the countries developed mutual interest towards each other. The research finds that in spite of not having any colonial claims in Southeast Asia, the Russian Empire was still interested in maintaining relationships with the Kingdom of Siam due to Russian realpolitik goals in the world and her desire not to let her rivals, Great Britain in particular, advance further in any region of the globe. At the same time, Siam, having taken into consideration Russia’s close alliance with France at that moment, found a key to Russian support in the anti-colonial struggle against both Britain and France through establishing personal contacts with the Russian Imperial family and relying mainly on the “eastern policy” of the Russian Czar. The thesis analyses the active diplomatic work undertaken by the Russian authorities in relation to the Siamese matters and also the personal intervention of the last Czar of Russia in the Siamese struggle for independence. As a result, the thesis argues that among the factors that allowed for Siam to remain independent in the time of aggressive colonial expansion, one should list not only the active modernization of the country and the farsighted policy of the balance of great powers undertaken by the Siamese monarchs, but also the support of Imperial Russia. The support provided was based mainly on the close friendship between Czar Nicolas II and King Chulalongkorn, who perpetuated personal contacts between the Russian Imperial Family and the Royal Court of Siam until they were broken by the vestigial realities of the Russian Empire which faced the October revolution of 1917.
DOI: 10.14457/cu.the.2009.2070
title: Efficacy of lacrimal probing and syringing with 3% solution of NACL and/or 0.2 mg/ml mitomycin-c as an adjunctive treatment of epiphora in nasolacrimal duct obstruction patients

description: Objective: To compare the efficacy of lacrimal probing and syringing among 3% solution of sodium chloride and/or 0.2 mg/ml mitomycin-C as an adjunctive medication in reducing epiphora symptom. Study design: A prospective, randomized, 2 by 2 factorial design study. Setting: Department of Ophthalmology, Phramongkutklao Hospital. Research medthodology: 48 of nasolacrimal duct obstruction patients with epiphora symptom were randomly assigned to receive either normal saline solution (NSS) or 3% solution of sodium chloride (NaCl) or 0.2 mg/ml mitomycin-C (MMC) solution or combined 3% NaCl with 0.2 mg/ml MMC solution, during office probing and syringing repeatedly at week 0, weeks 2 and 4. An assessment of epiphora with visual analogue scale (VAS), fluorescein dye disappearance test (FDDT) and Jones test were evaluated at week 0, weeks 2, 4, 8 and 12. Results: Probing and syringing was successfully reducing epiphora symptom and improvement of FDDT and Jones test. MMC group showed a significant reduction in mean difference of VAS score compared with NSS group (p&lt;0.01), 3% NaCl (p&lt;0.01) and combined 3% NaCl with MMC solution (p&lt;0.05). No complication or adverse event was found. Conclusion: 0.2 mg/ml mitomycin-C solution of was the most effective medication for office probing and syringing in reducing epiphora symptom in nasolacrimal duct obstruction patients.
DOI: 10.14457/cu.the.2009.2080
title: Combination of gabapentin and celecoxib for analgesia after major orthopedic surgery : a randomized controlled trial comparing the combination and either gabapentin or celecoxib alone

description: Objectives : To determine how the perioperative use of celecoxib in combination with gabapentin changes the amount of postoperative opioid consumption and pain score comparing to celecoxib alone or gabapentin alone. Setting : Ramathibodi hospital Design : Randomized double-blinded placebo controlled trial Subjects and method : The study was done in 99 patients, ASA physical status I-III, 18-80 year-old, who underwent major orthopedic surgery at Ramathibodi hospital during August 2009 and February 2010. The patients were allocated into 4 groups: 1) Placebo group (P). 2) Celecoxib group (C); received celecoxib 400 mg 1-2 hour preoperatively and 200 mg 12 and 24 hours later. 3) Gabapentin group (G); received gabapentin 400 mg preoperatively and 300 mg 12 and 24 hours later, and 4) Celecoxib + Gabapentin group (CG), received celecoxib 400 mg + gabapentin 400 mg preoperatively and celecoxib 200 mg + gabapentin 300 mg 12 and 24 hours later. After surgery under general anesthesia the patients received morphine by patient-controlled analgesia machine to relief pain. Results : Median twenty-four hour morphine consumption in P, C, G, and CG groups were 18.0 (1-63), 15.0 (2-30), 15.5 (0-37) and 8.0 (0-38) mg respectively, with significant difference. Pain score at postoperative hour 1, 4, 8, 12, 16, 20 and 24 were not different. Other complications such as sedation, nausea/vomiting, dizziness, etc, were not different. Conclusion : Combination of celecoxib and gabapentin in patients who had major orthopedic surgery further reduced 24 hour postoperative morphine consumption compared with either drug alone without change in pain score, side effects and patient satisfaction.
DOI: 10.14457/cu.the.2009.2081
title: Factors affecting breast self-examination among women in Roi Et municipality, Roi Et province, Thailand

description: To study the factors affecting breast self-examination among women in Roi Et municipality. The sample included 400 women aged 30 to 60. The research methodologies used included questionnaires for interviewing covering demographic data, knowledge, attitude, BSE practices, observation on BSE and observation breast model examination. Data was collected in April, 2010. Descriptive statistics was used in data analysis including the frequency, percentage, mean and standard deviation. Chi-square test was used to examine the association between independent and dependent variables. The results of this research shown that 53.0% of women in the sample had low level skills the most average level. 32.3% of these women did more than once a year or longer. 26.5% never did BSE. When analyzing the factors affecting, this research revealed that marital status, motherhood, knowing the methods of BSE, having a close relative with cancer, knowledge, attitude, experiences and behavioral practices, BSE skills, and using a breast model all contributed in a statistically significant way to breast model all (contributed in a statistically significant way to BSE (P-value &lt;0.05). Other variables did not associate with BSE. Creating awareness about breast cancer screening should focus on running a campaign to promote educational materials to develop a better understanding of BSE and to strengthen women’s attitude and skills to help them examine their breast correctly.
DOI: 10.14457/cu.the.2009.2071
title: Factors influencing self-care behaviors of diabetic patients in diabetes mellitus clinic, Changhan Hospital, Roi Et province, Thailand

description: To find out the factors influencing self-care behaviors of diabetic patients treated at the Diabetes Mellitus Clinic, Changhan Hospital, Roi Et Province. It was a cross-sectional study with simple random sampling among 315 samples. Data collection was in December 2009. Descriptive statistics was employed (frequency, percentage, means, standard deviation) and Chi Square test was used to find out the relationship among social-demographic characteristics, knowledge and attitude about diabetes mellitus, and self-care behaviors of diabetic patients. The result found that demographic data of majority of samples was females (72.1%), more than 60 years old (39.7%), married (73.3%), finished Prathomsuksa or lower (88.3%), agiculturers (77.1%), with household monthly income and expenses of less than 2,000 baht (56.5% and 44.8% respectively). The duration of their diabetes illness was less than 5 years (53.3%). Sixty-two point five percent of the patients had no family members with diabetes mellitus history, and 66.7% had people around them to motivate them to control diabetes. Ninety-one point one percent had information on diabetes from public health officers. It also found that knowledge had the relationship with the level of self-care behaviors of diabetic patients. In the future, there should be cooperation of people in the community for diabetes control with a promotion of knowledge and attitudes correctly.
DOI: 10.14457/cu.the.2009.2072
title: Effect of surfactants and organoclay loading on properties of polyurethane/clay nanocomposite foams

description: The present study emphasized on adding organoclay as filler in flexible polyurethane foams to reduce the usage of raw materials which affect the environment such as isocyanate. Two types of clay that were used in this study were in nanometer range. However the difference of ability to exchange cation and the amount of free silica within the clay are observed. Furthermore, the effect of chemical structure of surfactant and the effect of mixing sequence between nanoclay and monomer as well as organoclay loading on the degree of clay dispersion in polyurethane/clay nanocomposite foams are investigated. The results show that the organoclay which was treated by hydroxyl group surfactant shows the highest d-spacing of layered silicates and clay particles did not interfere with hydrogen bond formation as evidenced by fourier transform infrared spectroscopy. The investigation of mechanical properties such as hardness test, resilience test and compression set test show that hardness of polyurethane/clay nanocomposite foams is higher than that of pure polyurethane foam but resilience and compression set properties show lower value compared with those of pure polyurethane foam. Furthermore, the investigation of thermogravimetric analysis of polyurethane/clay nanocomposite foams showed that the nanocomposite foams is higher thermal degradation temperature because the silicates served as a thermal barrier for delaying the hard segments from degradation during heating. Nevertheless, the improvement of the properties depends on clay dispersion ability in the polyurethane matrix. Good dispersion of clay is observed at low organoclay content.
DOI: 10.14457/cu.the.2009.2073
title: Rate of breastfeeding for 4 months and promoting factors : a cohort study of mothers of preterm infants at Siriraj Hospital

description: Background: Breast milk is widely accepted as the best nutrition for all newborn infants. World Health Organization has recommended exclusive breastfeeding for 6 months. Rate of 4-month and 6-month exclusive breastfeeding in Thailand are 20.7% and 14.5%, respectively. There is no data reported for preterm infants. Objectives: 1) To determine rate of 4-month exclusive or predominant breastfeeding and partial breastfeeding in preterm infants. 2) To determine feeding pattern during hospitalization and at home in preterm infants. 3) To determine promoting factors of successful breastfeeding. Materials and methods: This was a cohort study in mothers of preterm infants with gestational age ≤ 34 weeks and birth weight ≤ 2000 grams. Data is collected from medical records and by parental interview. The mother-infant dyads will be followed after discharged from hospital until 4 months of age. Results: The study period was between 1 March 2009 and 28 February 2010. There were 90 mothers recruited. Data of 74 mothers with complete follow up were analyzed. Mean maternal age was 29.67 ± 7.43 years old. Median gestational age at delivery was 31 (interquartile range 4) weeks. Mean infants birth weight was 1412.71 ± 339.18 grams. Rate of exclusive or predominant and partial breastfeeding were 32.4% and 29.7%, respectively. After adjusted for mother work at home, multiple pregnancy, previous breastfeeding experience, mother stay with infants and exclusive breastfeeding in the last 24 hours by multiple logistic regression analysis, promoting factors of successful exclusive breastfeeding were mother work at home (OR 6.77, 95%CI 1.80, 25.55), previous breastfeeding experience (OR 5.09, 95%CI 1.39, 18.65), exclusive breastfeeding in the last 24 hours (OR 4.70, 95%CI 1.17, 18.89) and mother stay with infants (OR 4.22, 95%CI 1.17, 15.68). Conclusion: Exclusive breastfeeding in preterm infants is possible. Mothers stay with their infants during long hospitalization and exclusive breastfeeding during the last 24 hours before discharge are significant promoting factors that should be supported by health personnel. Mother work at home is the other significant promoting factor of successful 4-months exclusive or predominant breastfeeding.
DOI: 10.14457/cu.the.2009.2074
title: Utilization of supercritical carbon dioxide, in essential oil extraction from agarwood aquilaria subintegra

description: The supercritical carbon dioxide extraction (SC-carbon dioxide) of agarwood Aquilaria subintegra was studied. Extraction of agarwood in fine-milled form with 35 mesh size gave 4 times higher the extraction yield than cut dry agarwood. Various extraction conditions; temperature 40-70℃, pressure 12-25 MPa, and carbon dioxide flow rate 1-4 g/min, were investigated. The chemical compositions were analyzed by gas chromatography (GC) and gas chromatography with mass spectrometry (GC/MS). The results were compared with the commercial products. It was found that the optimal condition for extraction was 65℃, 12 MPa, and carbon dioxide flow rate of 3 g/min. Considering the extract contained sesquiterpenoid compounds as also found in the commercial ones. Three different co-solvents: methanol, ethanol, and ethyl acetate, were used in SC-carbon dioxide extraction and the additional volume was varied 5-10%v/v. Although the extraction gave higher yield, their GC chromatogram showed few sesquiterpenoid derivatives whereas many chromone derivatives were obtained. In addition, the extraction by the steam distillation and soxhlet extraction of agarwood were investigated. Although the soxhlet extraction gave the highest yield among all methods, the chemical compositions consisted of long chain carboxylic acid and chromone derivatives.
DOI: 10.14457/cu.the.2009.2075
title: Aerosol optical properties over Amphoe Phimai, Changwat Nakhon Ratchasima, North Eastern Thailand

description: Measurement of diffuse and direct solar irradiance can be used to determine the aerosol optical properties such as an aerosols optical depth (AOD), single scattering albedo (SSA), and volume size distribution (Vol), in the atmosphere. In this study, i-skyradiometer at Observatory for Atmospheric Research at Phimai, Thailand are used to observed these properties. The period of data is between 2006-2007, Skyrad.pack V4.2 program with double precision method was used for data analysis. In 2006, on select wavelength : 500 nm, it clears that AOD and SSA value are very high in two periods, March and September. They are lower in June to July and December to January. The highest monthly average of AOD is 0.75 in March and the lowest is 0.28 in June. The highest monthly average of SSA is 0.94 in October and the lowest is 0.87 in May and June. In 2007, as in 2006, AOD and SSA value is very high in two periods, March and September. They are lower in June to July and December to January. The highest monthly average of AOD is 0.89 in March and the lowest is 0.32 in June. The highest monthly average of SSA is 0.90 in March and October. The lowest monthly of average SSA is 0.83 in December. It is found that the average volume of size of aerosol particle in coarse mode is larger than 16.54 micrometer and the size of aerosol particle in fine mode is 0.17 micrometer both of two years. The backward trajectories in winter season show the source of aerosol particle came from the north-east of Thailand, in continental. In summer season most of the aerosol particle came from the east. And in rainy season, the aerosol particle came from the south-west.
DOI: 10.14457/cu.the.2009.2076
title: Tsunami force estimation on inland bridges considering complete pier-deck configurations

description: Theoretical approach for estimating tsunami-induced forces with today’s state-of-the-art cannot be easily applied for bridges due to the complexities of the wave propagation on shore and wave-structure interaction. In this thesis, the research works focus on the investigation of the flow characteristics of tsunami surges around inland bridges and tsunami pressures and forces on bridges. Stand-alone piers and complete pier-deck bridge models which are proportionally scaled from a typical I-girder bridge prototype were employed experimentally. Five configurations of bridge decks with and without perforations in girders and/or parapets were considered. The experimental results reveal that the surge forces on the piers measured from a complete pier-deck model are substantially higher than those measured from the stand-alone piers model, which indicates that the customary method of computing the surge forces on the pier independently for simplicity under the current practice needs to be reviewed for the case of the tsunami-pier-deck interaction. In addition, bridges with perforation in the girders and/or parapets, which have not yet been studied in research for tsunami hazard mitigation, show reduction of forces and less energy input into the structure throughout the time-history. A numerical model in accordance with the physical model was next constructed in a computational fluid dynamics (CFD) program and verified using the recorded experimental data. The validated model was then extended to simulate bridge prototypes of seven different deck clearances subjected to the most severe wave scenario. The issue of simplification in bridge deck is addressed. The utilization of a complete pier-deck bridge model for a realistic representation is supported by the numerical results. With the piers excluded or simplification of an I-girder deck to a box girder deck, the maximum horizontal and vertical uplift forces on the deck at the initial wave impingement are significantly underestimated by about 15% and 60% from those predicted for the actual configuration, respectively. Finally, an empirical method to estimate tsunami forces on bridge decks was proposed. Tsunami forces on bridge decks are categorized into four main components, i.e. horizontal peak, horizontal slowly-varying, vertical uplift and additional gravity forces. Pressure distribution of the horizontal slowly-varying force on bridge deck is established and three other force components are computed as some multiple of the mean slowly-varying force component.
DOI: 10.14457/cu.the.2009.2077
title: Airport noise impact on property values : case of Suvarnabhumi Airport

description: Not unlike other airports around the world, Suvarnabhumi International Airport is also faced with complaints of noise generated by aircrafts approaching and taking off from the airport. The airport noise affects quality of lives of people who live and work in nearby areas as well as prices of properties in the areas. Since the airport operation began in 2006, property owners in the airport vicinities have protested and demanded for monetary compensation for their deteriorated quality of lives. The objective of this study is to examine the problem by assessing the discount in housing prices due to the impact of Suvarnabhumi Airport noise. A series of hedonic regression models of property values are developed and estimated based on a data set of 37,539 new house sale records transacted between 2002 and 2008. To test the hypotheses about the impact of the airport, the hedonic models contain two features that could quantify the magnitude of noise effects and the beneficial effects of transportation access improvements. The results confirm that there was no impact of airport noise on property prices before the opening of airport, but the impact became negative and significant after 2006. Specifically, there is on average a 25.9% discount in price of new properties located between NEF 35 and 40 contour lines and 9.53% discount for property located between NEF 30 and 35 contour lines. These estimates can be translated to a noise depreciation index (NDI) of 3.27% per dB, which is in the high range compared to NDI estimates in the previous studies of Europe and North America.