cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.14457/cu.the.2011.80
title: Comparison of renal function between cyanotic and acyanotic congenital heart disease in children and adolescent

description: Objective: To evaluate glomerular and tubular function and compare prevalence of renal dysfunction between cyanotic and acyanotic congenital heart disease in children and adolescent. Study design: cross-sectional analytic study Setting: Vajira hospital, Pramongktklao hospital, Ramathibodi hospital Research methodology: Blood 3 cc was collected from eligible patients both cyanotic and acyanotic congenital heart disease to evaluated for CBC, electrolyte, BUN, creatinine, magnesium. Urine was collected to evaluated for Urine NAG, creatinine, sodium, magnesium, protein, Microalbumin Results: Forty-six patients, 15 cyanotic and 31 acyanotic congenital heart disease (CHD) were studied. Statistical significant different regarding to systolic blood pressure, hemoglobin, oxygen saturation, cardiac surgery and functional class found between 2 groups. Prevalence of tubular dysfunction and glomerular dysfunction in cyanotic was significantly higher than acyanotic CHD. Conclusion: The prevalence of glomerular and tubular dysfunction in cyanotic congenital heart was higher than acyanotic congenital heart disease. The screening of both glomerular and tubular function is useful to early detect abnormality of glomerular and tubular function in both cyanotic and acyanotic congenital heart disease.
DOI: 10.14457/cu.the.2011.81
title: An application of lean concept to structural steel fabrication process : a case study of steel box girder fabrication for a bridge project

description: This thesis presents an application of lean concept to a structural steel fabrication process through a case study of a box girder bridge project. Relevant data were collected from a fabrication factory in Thailand based on the requirements of a value stream mapping tool. The model of the existing process was analyzed by focusing on the total working time, which consists of process time and waiting time. Lean concept was then applied to improve the process. The process improvement encompassed conserving working performance, reducing waiting time, and eliminating bottleneck activity. Owing to the limitation that the process improvement cannot be implemented in the actual factory, a simulation model was adopted to verify the proposed guidelines. In the simulation model, various process improvement guidelines were represented by different trial cases. It was found that conserving working performance helps reduce process time, merging working activity can reduce waiting time, and increasing working station can eliminate bottleneck. Finally, this thesis provides a guideline of structural steel process improvement to reduce waste by maximizing workers performance and machine usage and reducing working time.
DOI: 10.14457/cu.the.2011.181
title: Hydrothermolysis of carbohydrates using metal supported on aluminosilicate

description: Mesoporous silica SBA-15 was synthesized by hydrothermal method using triblock P123 (poly(ethylene oxide)20-poly(propylene oxide)70-poly(ethylene oxide)20) copolymer as a structure directing agent. The gel molar composition of SBA-15 was 1.0 TEOS: 0.0165 P123: 6.95 HCl: 140 H2O. The gel was crystallized at 100°C for 48 h. The Al-SBA-15 was synthesized by incorporating SBA-15 with aluminium via post synthesis. In addition, the Ni and Ru metal supported on SBA-15 and Al-SBA-15 were prepared by aqueous wet impregnation method. The synthesized materials were characterized by X-ray powder diffraction, nitrogen sorption analysis, solid state 27Al-nuclear magnetic resonance, scanning electron microscopy equipped with energy dispersive spectrometer, and transmission electron microscopy. Synthesized catalysts were applied in hydrothermolysis of carbohydrates using glucose, sucrose, and starch as starting materials. The various reaction parameters such as starting material type, catalytic type, catalytic amount, and temperature were studied. From the results, the optimum condition for glucose over 20%Ru-ZSM-5 in amount of 15 wt.% of starting material at 200°C for 1 h which gave the maximum levulinic acid selectivity as 44.0%. The optimum condition for sucrose over 20%Ru-Al-SBA-15 in amount of 15 wt.% of starting material at 200°C for 1 h which gave the maximum levulinic acid selectivity as 40.8%. The optimum condition for starch over 20%Ru-Al-SBA-15 in amount of 10 wt.% of starting material at 300°C for 1 h which gave the maximum levulinic acid selectivity as 38.6%.
DOI: 10.14457/cu.the.2011.182
title: Formulation of silk sericin loaded in niosomes and evaluation of biological activities

description: The process of extraction of sericin from silkworm, Bombyx mori Linn (Nang-noi Sisaket 1), was investigated for the appropriate method for silk sericin extraction. Method I which was preformed by using a high temperature and pressure degumming technique, yielded silk sericin with a significantly higher superoxide scavenging and antityrosinase activities than method II (p &lt; 0.05). In addition, the optimized spraying condition was estimated using response surface methodology. The effect of two process parameters, inlet temperature and cocoon concentration solution on yield and moisture content was studied. A face centered design showed a linear model fitted for %yield and a quadratic model for %moisture content (p &lt; 0.05). The optimum region by overlay plot was carried out using the best condition to evaluate the repeatability of the spray-drying technique. The observed means obtained for %yield and %moisture content were in range of the prediction intervals at 95% confidence level as, 11.64±0.62% and 6.38±0.23%, respectively. The result clearly showed that the model fitted the experimental data well. The properties of silk sericin spray dried powder were determined. The protein content of silk sericin was 21.83±1.71% (w/w). The scavenging activities of sericin against DPPH and superoxide free radicals exhibited the EC₅₀ values of 0.82 and 0.43 mg/ml, respectively. The antityrosinase activity of sericin exhibited an EC₅₀ value of 0.40 mg/ml. Consequently, niosomes loaded with 1.0% weight by volume silk sericin could be prepared by reverse phase evaporation technique. Niosomes could be achieved by four formulations using Span 20, Span 40, Span 60 and Span 80 with surfactant: cholesterol ratio of 1:1 and with Solulan® C-24 as a stabilizer. Vesicular sizes of all formulations determined by photon correlation spectroscopy technique were between 181-341 nanometers. Entrapment efficiency of all niosomes formulation was between 84.22-93.88%. All of silk sericin loaeded in niosomes formulations have biological activities. Vesicular size showed a larger mean size at 4 °C for 12 weeks. The percentage of silk sericin in niosomes that composed of Span 40 and Span 60 were non-significantly decreased at 4 °C for 8 weeks (p&gt; 0.05). The in vitro permeation using newborn abdorminal porcine skin as skin model revealed that niosomes loaded with sericin could enhance the skin penetration of sericin through pig skin as compared with sericin solution. The result demonstrated that niosomes could enhance the delivery of sericin through skin. The permeability coefficient of sericin loaded niosome formulations were between 0.0043-0.0051 cm/h.
DOI: 10.14457/cu.the.2011.82
title: Comparison of the efficacy and adverse effects of bipolar radiofrequency turbinate reduction with and without lateral outfracture in the treatment of inferior turbinate hypertrophy : a randomized controlled trial

description: Objective: To compare efficacy and adverse effects between bipolar radiofrequency turbinate reduction with lateral outfracture (BRTR with LO) and bipolar radiofrequency turbinate reduction alone (BRTR alone) in chronic rhinitis patients with inferior turbinate hypertrophy. Study design: Randomized controlled trial Setting: Department of Otolaryngology, King Chulalongkorn Memorial Hospital Research methodology: Fifty participants were enrolled. Intervention was randomized and performed by BRTR with LO or BRTR alone. Nasal obstruction symptom on postoperative week 8, total nasal volume on postoperative week 8 and adverse effects were compared. Results: Medians (IQR) of the nasal obstruction symptom on week 8 in BRTR with LO and BRTR alone groups were 1.40 (0.35-2.55) and 0.70 (0.05-1.70), respectively. The difference did not have statistical significance (p = 0.100). Means ± SD of the nasal volume on postoperative week 8 in BRTR with LO and BRTR alone groups were 9.97 ± 1.84 and 10.11 ± 2.24, respectively. The difference did not have statistical significance (p = 0.822), Medians (IQR) of the intraoperative pain in BRTR with LO and BRTR alone groups were 2.30 (0.50-4.90) and 0.90 (0.15-6.25), respectively. The difference did not have statistical significance (p = 0.600), Medians (IQR) of the postoperative pain day 1 in BRTR with LO and BRTR alone groups were 0.60 (0.30-2.95) and 0.50 (0.15-2.95), respectively. The difference did not have statistical significance (p = 0.669), Proportions (%) of none/mild/moderate/severe postoperative bleeding in BRTR with LO and BRTR alone groups were = 4/64/28/4 and 20/64/16/0, respectively. The difference did not have statistical significance (p = 0.214). Conclusion: No statistically significant differences of the efficacy and adverse effects were found between bipolar radiofrequency turbinate reduction with lateral outfracture and bipolar radiofrequency turbinate reduction alone in chronic rhinitis patients with inferior turbinate hypertrophy.
DOI: 10.14457/cu.the.2011.83
title: Plantwide control structure design for an auto-refrigerated alkylation process

description: The alkylation process is widely used in oil refinery as a process to produce an alkylate product which is very useful for internal combustion engines. The process operated by reacting isobutene with olefins (primarily mixture of butane-butylene) and adding the sulfuric acid catalyst. The process is carried out in exothermic reactions in a series of agitated reactors. The separation sections with two distillations are then installed to extract the desirable products and return the useful remnant back to the recycled stream. This research has been developed by using plantwide control procedure of Wongsri (2012) to improve the control structure of an auto-refrigerated alkylation process which can be referred as multi-unit process containing several unit operations. The procedure used heuristics method to find the fixture plant which is appropriate in handing material and heat disturbances entering the process. Wherefore, a commercial dynamics simulator is used to design and simulate the alkylation process at steady state and dynamic conditions.
DOI: 10.14457/cu.the.2011.84
title: Plantwide control structure design for acetone process via dehydrogenation of 2-propanol

description: Most chemical plants consist of a number of processing units to ensure its safety and stability of process operations. Processes involved recycling of material and energy are much more complex due to intensive interactions among units. These lead to an extremely complex dynamic behavior resulting in consistency of undesired products. However, the requirements of market, social and environment demand constant product quality in order to manage cost, energy and raw materials efficiently. To achieve all objectives, therefore, plantwide control plays an important role in the improvement of the modern chemical processes. Acetone is a common chemical product which has been widely used as a solvent and as a reactant for many chemical processes. One of the syntheses of acetone is dehydrogenation of 2-propanol. In this research, a control structure of the acetone process is designed by using the heuristics procedure of Wongsri (2012). The procedure takes the fixture plant into consideration to provide a reasonable control structure which is straightforward to understand. The control structure is then designed at steady state and dynamic conditions through a commercial process dynamics simulator. Consequently, the control structure is well handled with both material and thermal disturbances.
DOI: 10.14457/cu.the.2011.85
title: Fabrication of electronic devices using plasma-polymerized polypyrrole

description: The Schottky barrier diodes and piezoresistive strain sensor were fabricated by using plasma polymerized polypyrrole. The polypyrrole was prepared by using plasma at AC voltage in the range of 800-1400 volt and reaction time for 30-90 min. The polypyrrole film was characterized by spectrophotometry and the functional groups of polypyrrole film were identified by Fourier transform infrared spectroscopy (FTIR). The FTIR confirmed that the polypyrrole was successfully obtained. The morphology of polypyrrole film was observed by Scanning electron microscopy (SEM) that shows dense, smooth, and uniform film. The thickness of polypyrrole films were in the range 1.02-2.60 µm. The suitable condition for Schottky barrier diode fabrication was in-situ doped by I2 under low voltage and less reaction time. For the fabrication of piezoresistive strain sensor, polypyrrole film was prepared by plasma on polymethyl methacylate substrate. The product shows flexible property. Piezoresistivity is quantified by the gauge factor. The sensor was fabricated by polypyrrole at 800 volt for 30 min which led to the highest gauge factor.
DOI: 10.14457/cu.the.2011.86
title: Effect of N₂ bubbles on transesterification of vegetable oil in a fixed bed ractor

description: The present thesis investigated the effect of nitrogen bubbles on transesterification of plam oil in a fixed bed reactor. Dolomite, a natural calcium rocks was used as the heterogeneous catalyst. The catalysts were prepared by physical mixing technique. The catalyst was formulated with a size of 2x5 mm. After that, the catalyst was calcined at 800 ℃ for 6 h before used in transesterification. In the non-nitrogen gas feed system, the effect of types of palm oil, effect of molar ratio of methanol to oil, effect of catalyst extrudates size and effect of the addition of methyl ester were investigated. The optimum reaction condition of transesterification with the presence of nitrogen bubbles was studied. The FAME yield of 96.7% was achieved under the optimal conditions. The optimal reaction conditions were, reaction temperature was 60 ℃, nitrogen gas feed rate was 30 mL/min, molar ratio of methanol to oil was 30:1 and total flow rate of reactants was 2.5 mL/min. The stability of transesterification of the nitrogen gas feed system was compared with non-nitrogen gas feed system. The decrease of the FAME yield was observed in case of transesterification in non-nitrogen gas feed system. It should be due to the glyceride derivatives covered on the catalyst surface and resulting to the deactivation of catalyst. The FAME yield of transesterification with the presence of nitrogen bubbles was stable throughout the time on stream of 18 h. It should be due to the feed of nitrogen gas can leach glyceride derivative on the catalyst surface which prevents the deactivation of catalyst. The value of activation energy of transesterification in the presence of nitrogen gas was 38.6 kJ mol⁻¹.
DOI: 10.14457/cu.the.2011.87
title: Fuel gas production from steamed rice by hydrothermal treatment in subcritical water

description: Carbohydrate is an organic compound that could be an alternative source of fuel gas. Hydrothermal treatment makes use of high temperature and pressure to decompose organic compounds. In this research, steamed rice which is considered as simulated waste carbohydrate is subject to the hydrothermal treatment process for producing fuel gas with a tubular reactor in the batch system with a reaction temperature range of 300 to 400°C and heating rate ranging from 8 to 13°C/min. The result shows high temperature and high heating rate would promote the hydrogen production rate. In addition, solid residue, which is agglomerates of carbonaceous microsphere, was examined for its potential utilization. In part of continuous process, steamed rice was used as a feed stock which used the continuous system. There investigate on the effect of temperature in range of 400, 500 and 600oC and particle size in range of 60, 140 and 250 µm. The result is shown that the small particle size and high temperature could be produced the highest gas product. When using the H2O2 as an additive, it could be promoted carbon gasification efficiency in all experiment because of H2O2 was promoted oxidation process.
DOI: 10.14457/cu.the.2011.88
title: Conductive lines on flexible polymer substrates fabricated by inkjet printing of metal salts solution

description: Recently, printed electronics has attracted lots of attentions because it is a simple processof making a desired conductive pattern on various substrates. In this research, the metal salt was selected as conductive ink because problems of porosity and non-uniform surface on conductive printed pattern can be avoid. The methods to fabricate metal conductive patterns including reactive inkjet printing, reactive sintering and electroless copper plating were investigated. In reactive inkjet printing, the silver line was synthesized by sequentially printing reducing agent and silver nitrate solution. The lowest resistivity of silver line obtained by using 5 M of silver nitrate solution and 15 printing cycles was 4.62×10-4 Ω cm. Alternatively, continuous and smooth patterns of silver lines were fabricated by the reactive sintering process of formic acid vapor and ethylene glycol vapor. The resistivity of the silver line obtained by formic acid vapor reduction at 150ºC for 120 min was 1.86×10-4 Ω cm. The resistivity of the silver line obtained by ethylene glycol vapor reduction at 250ºC for 30 min was 1.20×10-4 Ω cm. As compared to reactive inkjet printing, the reactive sintering process gives more smooth and continuous pattern resulting in lower resistivity. Additionally, the copper line was prepared by electroless copper plating on silver seed layer at room temperature. The resistivity of copper line obtained by electroless plating for 15 min was 1.92×10-5 Ω cm.
DOI: 10.14457/cu.the.2011.89
title: Viability of the water dump floods technique in got

description: The Pattani Basin, Gulf of Thailand, is characterized by small, faulted, and vertically stacked fluvial reservoirs. The oil and gas reserves per well are small and are developed through low cost wells. Any additional investments, such as water injection pipelines and pumps are hard to justify. Water dump flood is proved technology, and it could be a viable IOR technique for small oil reservoirs. This study evaluates dump flooding in the Pattani Basin, Gulf of Thailand via finite difference numerical simulation and aims to identify parameters such the ratio of aquifer to reservoir size that yield successful dump flooding projects. This study evaluated the following scenarios: (1) comparing three wells producing under solution-gas drive mechanism against water dump flood from an edge well and a water dump flood from a center well, (2) comparing the performance of water dump flood as a function of the aquifer size, (3) evaluating the impact of well productivity index (PI) on the oil recovery for the water dump flood, (4) evaluating the impact of well injectivity index (II) on the oil recovery for the water dump flood, (5) studying viability and performance of water dump flood at reservoir depths of 4000, 6000, and 8000 ft TVDSS, (6) studying viability and performance of an underlying aquifer dump flooding, (7). Simulating more cases by changing oil gravity, and (8) performing simulation runs to study the optimal depletion point to begin the water dump flooding. The study found that dump flooding can increase the recovery factor up to 12 percent depending on the choice of well location and aquifer to reservoir size. The results of the study suggest that the best well locations are edge wells. The study suggests that there is an optimal aquifer to reservoir ratio around 43 RBL/RBL that maximizes oil recovery factor. Finally, the oil recovery efficiency for all different times to start water dump flood is higher than no water dump flood.
DOI: 10.5281/zenodo.3384648
title: Chronicle of Nature - Phenology of Plants by Mari Chodra National Park

description: Plants Phenology dataset compiled in the context of Chronicle of Nature program in Mari Chodra National Park (Russian Federation) consisting of 3197 records collected during 10 years between 2007 and 2016.
description: This dataset export was created by EarthCape software platform version 18.2.7186.19901
DOI: 10.14457/cu.the.2011.183
title: The effects of probiotic supplement (Bacillus subtilis and Lactobacillus acidophilus) on feed efficiency, growth performance and microbial population in distal gastrointestinal tract of weaning rabbits

description: Sixty-four healthy weaning New Zealand White rabbits (28-29 days of age) were used to investigate the effects of probiotic supplement on feed efficiency, growth performance, fecal score, coefficient of total tract apparent digestibility, nitrogen retention, cecal fermentation, and gut microbial populations of weaning rabbits. The animals were fed four diets for 6-week study. A commercial diet with no probiotic was used as a basal diet (control). Three probiotic diets composed of basal diet mixed with either: 1) B. subtilis (BS) spores at 1x10⁶ cfu/g feed, 2) L. acidophilus (LA) at 1x10⁷ cfu/g feed, or 3) a mixture of B. subtilis at 0.5x106 cfu/g feed and L. acidophilus at 0.5x107 cfu/g feed (BL). The results showed that the weaning rabbits supplemented with LA and BL had greater average daily gain, lower feed conversion ratio, greater coefficient of total tract apparent digestibility, and lower fecal score than the rabbits fed the control diet (P&lt;0.05). The animals fed LA had greater nitrogen retention, cecal volatile fatty acids concentration and intestinal lactobacilli population, and lower intestinal coliform population as compared to the control group (P&lt;0.05). No significant differences were found on almost all parameters in the animals supplemented with BS as compared to the control group. In conclusion, the present results suggest that L. acidophilus has the potential benefits in terms of probiotic effects in weaning rabbits.