cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.14457/cu.the.2017.229
title: Computational fluid dynamic study of sorption enhanced steam reforming of methane/ethanol in circulating fluidized bed system

description: Two-dimensional fluid dynamic models were used to optimize and design a proper pilot-scale system for sorption enhanced steam methane reforming (SESMR) and sorption enhanced steam reforming of ethanol (SESRE) in a circulating fluidized bed reactor (CFBR) using Ni-based catalyst and dolomite as sorbent. The CFBR system was separately designed as 3 parts: including a SESMR riser, a SESRE and a regenerator. The SESMR riser could get H2 purity reached equilibrium of 98.58% in dry basis with the highest H2 flux of 0.301 kg/m2s when operating with steam to carbon ratio of 4 mol/mol, gas velocity of 6 m/s, inlet temperature of 581°C. While the SESRE riser could get maximum H2 purity only 91.30% in dry basis with the highest H2 flux of 0.147 kg/m2s when operating with steam to ethanol ratio of 6 mol/mol, gas velocity of 3 m/s, inlet temperature of 600°C. Both the risers for SESMR and SESRE had the best design with diameter of 0.2 m, height of 7 m operating with solid flux of 200 kg/m2s and catalyst to sorbent ratio of 2.54 kg/kg. Lastly, in regenerator part, double-stage bubbling bed regenerators with 1.2 m width and 0.8 m height of bed could perfectly regenerate the sorbent when operating with gas velocity of 0.2 m/s and preheating the solids at 950°C. Overall, SESMR and SESRE had feasibility to continuously produce high purity with high production rate of H2 by this preferred design and conditions of CFBR system.
DOI: 10.13145/bacdive124153.20191129.4.1
title: Streptomyces sp.

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.13145/bacdive124154.20191129.4.1
title: Streptomyces sp.

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.14457/cu.the.2017.230
title: Dehydration and oxidative dehydrogenation of ethanol over SBA-15 based catalysts prepared by sol-gel and hydrothermal methods

description: In this present study, characteristics and catalytic properties of zirconium (Zr) and bimetal (Zr and La) containing in SBA-15 catalysts and different VOx/SBA-15 catalysts were determined and well related. The study was divided into three parts. Regarding to the first part, zirconium (Zr) and bimetal (Zr and La) containing in SBA-15 synthesized by sol-gel and hydrothermal methods were compared. The results showed that the incorporation of Zr and bimetal (Zr and La) had an effect on the textural properties of both synthesized SBA-15 catalysts. Surface acidity in the SBA-15 suggests new active sites, especially Brønsted acid type. In the second part, all SBA-15 catalysts synthesized by both methods were first used as catalysts for the catalytic dehydration of ethanol to ethylene. The result shows that the performance of these SBA-15 supported catalysts in ethanol dehydration is also related with the alteration of surface acidity caused by the introduction of Zr and Zr-La. According to further modified of these catalysts, zirconium (Zr) and bimetal (Zr and La) containing in SBA-15 catalysts were selected to study in the third parts with vanadium oxide or VOx species modification in order to be used in non-oxidative dehydrogenation and oxidative dehydrogenation of ethanol. It is worth noting that isolated monomeric VOx species, as well as the amounts of weak basic sites essentially played important role in non-oxidative dehydrogenation and oxidative dehydrogenation of ethanol to acetaldehyde.
DOI: 10.13145/bacdive124155.20191129.4.1
title: Streptomyces sp.

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.13145/bacdive124156.20191129.4.1
title: Streptomyces sp.

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.14457/cu.the.2017.231
title: An application of geosynthetic cementitious composite mat for slope stabilization

description: In recent years, soil erosion and slope instability caused by seepage and rainfall are major problems, especially in the mountain area. Many research studies have focused on finding a new technology or material to stabilize the soil slope. In this study, a novel material called geosynthetic cementitious composite mat (GCCM) is selected to study its performance on soil slope stabilization. A series of 1-g physical model tests and numerical simulation (Plaxis 2D) on sandy soil slopes stabilized with and without GCCM are performed under seepage condition. In addition, centrifuge modeling of soil slopes is performed under 25-g in seepage and rainfall conditions. Particle image velocimetry (PIV) technique is employed to measure the displacement of soil in 1-g physical model tests, whereas accelerometer is used to measure the displacement of soil in 25-g centrifuge model tests. In 25-g centrifuge model test, the GCCM material is modeled using an equivalent strength and stiffness medical gypsum plaster sheet. In-house developed water tank and rainfall simulator are calibrated to simulate the seepage and rainfall. The results show that the GCCM can reduce the displacement of the slope by its high stiffness and interface friction. Additionally, the GCCM can delay the increase of water pressure raising that leads to diminishing the hydraulic force acting on the soil slope. The result indicates that the GCCM shows a good performance in slope stabilization.
DOI: 10.13145/bacdive124157.20191129.4.1
title: Streptomyces sp.

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.14457/cu.the.2017.232
title: SYNTHESIS OF Cu2ZnSnS4 FOR THIN FILM SOLAR CELLS PREPARED BY SOLUTION-BASED PROCESSES

description: Copper zinc thin sulphide (Cu2ZnSnS4: CZTS) thin films were synthesized via convective deposition method at various deposit speeds based on sol-gel precursor of 2-methoxyethanol solution with metal chlorides and thiourea. The deposited films were annealed at 340 to 550ºC under N2 atmosphere to yield high quality CZTS films. The compositions, morphology, phase, and optical properties of the CZTS films were characterized by Energy dispersive X-ray analysis (EDX), Scanning electron microscopy (SEM), X-ray diffraction (XRD), Raman spectroscopy, and UV-Vis spectrophotometer, respectively. The formation films exhibited in kesterite structure and the band gap was about 1.4-1.5 eV. The CZTS films also applied as a hole transporting layer of organic photovoltaics solar cells. Although the power conversion efficiency of the OPV device with CZTS film is less value, but it is more stable than ordinary OPV device with PEDOT:PSS as a hole transporting layer.
DOI: 10.13145/bacdive124158.20191129.4.1
title: Streptomyces sp.

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.13145/bacdive124159.20191129.4.1
title: Streptomyces sp.

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.14457/cu.the.2017.233
title: Effects of PbS Quantum Dot doped TiO2 Nanotubes as Electron Transporting Layer on the Efficiency of Perovskite Solar Cells

description: TiO2 nanotubes (TNTs) are used as an excellent electron transporting layer for high efficiency perovskite solar cells. In this work, TNTs were synthesized via hydrothermal process from different particle sizes of TiO2 nanoparticle precursors as follows: 5 nm, 25 nm, and 50 nm. The highest surface area of 312.39 m2/g of TNTs was obtained from TiO2 precursor with particle size of 25 nm and was used to dope with lead sulfide quantum dots (PbS QDs). Due to a large band gap and poor conductivity of TNTs which limits the efficiency to transport electrons in the perovskite solar cell, PbS QDs doped TNTs were prepared to modify the valence and conduction energy bands of TNTs which can enhance the power conversion efficiency of perovskite solar cells. A slight decrease in the energy band gap of PbS QDs doped TNTs to about 2.97 eV was obtained. Both pure TNTs and PbS QDs doped TNTs were deposited onto the perovskite layer as the ETL with various concentrations of TNTs and PbS QDs doped TNTs in TiOX. The best power conversion efficiency (PCE) of the perovskite device prepared from the concentrations of 0.3 mg/ml of PbS QDs doped TNTs in TiOX is 14.95%, which is about 15% higher than that of perovskite solar cell with pure TNTs in TiOX. As a consequence, ETL in nanotube structure has proved to be an efficient structure for transporting electrons in the perovskite solar cell. Moreover, high surface area TNTs offer the enhanced interfacial area for doping with PbS QDs, which ultimately improved the property of ETL and resulted in the enhanced PCE as a consequence of appropriate band gap.
DOI: 10.13145/bacdive124160.20191129.4.1
title: Streptomyces sp.

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.14457/cu.the.2017.234
title: CONTINUOUS HYDROTREATING PROCESS OF PALM FATTY ACID DISTILLATE (PFAD) OVER BIMETALLIC NiCu/HZSM-5 CATALYST FOR BIO JET FUEL PRODUCTION

description: This research investigated bimetallic NiCu/HZSM-5 catalyst for the production of bio jet fuel via hydrotreating process. The catalysts with different Ni and Cu ratio were characterized by XRD, NH3-TPD, H2-TPR, SEM-EDX and N2-physisorption techniques. Palm fatty acid distillate (PFAD), nonedible by-product from palm oil refining process, was employed as a low-cost feedstock. For catalyst screening, the reaction was performed in an autoclave reactor under batch operation with operating temperature of 375°C, initial H2 pressure of 50 bars and reaction time of 3 h. The results showed that doping Cu could enhance deoxygenation activity while carbon formation was found to be suppressed. 12.5 wt.% Ni and 2.5wt.%Cu doping on HZSM-5 catalyst was found as a suitable catalyst to obtain a high conversion of PFAD (94.8%) with the lowest carbon deposition on the catalyst (approx. 5 wt.%). The selectivity of green fuel is gasoline 14.9%, jet fuel 45.0% and diesel 40.1%. For continuous operation, 12.5 wt.% Ni and 2.5 wt.% Cu were loaded on commercial pellet-type HZSM-5 catalyst. At operating temperature of 400°C, H2 pressure of 40 bar and H2/oil molar ratio of 100, the most suitable LHSV of 2 h-1 condition was found to achieve high conversion (90.1%) with a stable operation. The conversion gradually dropped over 80 h of the operating time (approx. 65.0% conversion) and then suddenly drops to 36.5% conversion at 103 h.
DOI: 10.13145/bacdive124161.20191129.4.1
title: Streptomyces sp.

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.13145/bacdive124162.20191129.4.1
title: Streptomyces sp.

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.14457/cu.the.2017.235
title: Designing Efficient Petroleum Fiscal System for Mozambique

description: Nowadays, tax regime is designed to attract investment and provide the contractor with fair return on investment, at the same time, provide the host government with adequate resources for rent, thereby resulting in win-win situation. This study analyses the existing petroleum fiscal regime in the Republic of Mozambique and proposes a more efficient and flexible regime. The analysis shows that the government take currently remains at around 39% while the contactors’ net present value (NPV) increases as field sizes and oil prices increase. The current system is considered a regressive system which is inefficient in distributing wealth from oil profit. The proposed system uses sliding-scale corporate tax triggered by annual rate of return (RoR) and discards royalty. The study shows that annual RoR demonstrates a good parameter for this system as it is sensitive to boundary conditions such as oil pricing scenarios and field sizes. This makes the government take increases or decreases in relation to contractors’ profits over time given varying field sizes and oil prices. The petroleum fiscal regime proposed is more progressive as the host government and contractors are both subject to profitability fluctuation. This system could encourage more investors to invest in smaller field sizes or when oil prices are low while allow the host government to gain more benefit from bigger field sizes where profitability potential is higher or when oil prices are high.
DOI: 10.13145/bacdive124163.20191129.4.1
title: Streptomyces sp.

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.14457/cu.the.2017.236
title: FACTORS AFFECTING BUILDING DAMAGE AND PEOPLE'S PREPAREDNESS FOR EARTHQUAKE IN CHIANG RAI

description: On May 5, 2014, an earthquake with a magnitude of 6.3 on the Richter scale occurred in Chiang Rai, Thailand. This earthquake was the strongest earthquake in Thailand at the Mae Lao District region. It also caused building damage and casualties. In this research, 277 participants living in village no.2 and village no.7 of Dong Mada, a sub-district at Mae Lao district in Chiang Rai, were selected. A questionnaire was used to interview these participants, and the data were analyzed by Chi-square, Fisher’s exact test, a Mann-Whitney U test, and a Kruskal-Wallis test. The objective of this study was to examine factors that affected building damage, preparedness for behavior during future earthquakes, preparedness before and after earthquakes in the future, seismic risk perception; and what would be the framing type of building damage that affected seismic risk perception. The results indicated that the location of the buildings and building types affected structural damage levels while the year built did not affect structural damage levels. The casualties and earthquake experience of May 5, 2014 did not affect preparedness for behavior during future earthquakes. However, seminars did. Sex, age, education levels, house ownership, and income were associated with preparedness before and after earthquakes in the future. However, time living in the present house and villages were not associated with preparedness before and after earthquakes in the future. Sex, age, education levels, house ownership, income, and time living in the present house were not associated with seismic risk perception. Most participants behaved well on risk perception although most with low socio-economic status lived near the epicenter, and most participants behaved with low preparedness. It may be because most of their low socio-economic status, meaning one-third of the participants were poor; thus, they lacked money for earthquake preparedness. People may have more earthquake preparedness when they perceive earthquake data by the suitable framing. Overall, giving earthquake education through seminars, facilitating preparation for earthquakes, and strengthening buildings with seismic provisions are all factors likely to decrease earthquake risk.
DOI: 10.13145/bacdive124164.20191129.4.1
title: Streptomyces sp.

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.13145/bacdive124165.20191129.4.1
title: Streptomyces sp.

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.13145/bacdive124166.20191129.4.1
title: Streptomyces sp.

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.14457/cu.the.2017.237
title: PRODUCT DESIGN PROCESS IMPROVEMENT FOR A JEWELLERY MANUFACTURER

description: The major purpose of this thesis is to improve the product design process for a jewellery manufacturer by utilisation of Lean Six Sigma DMAIC Methodology. The case is the operations of a jewellery manufacturer in Thailand. In Define phase, a product design process improvement team was formed and current problem which is delay in delivery and product not as per customer specifications were identified. During Measure phase, Cause and Effect Analysis was performed in order to determine root causes, RPNs were defined and prioritised by utilisation of FMEA, and the root causes were graphically summarised using Pareto Chart. In Analyse phase, the solutions for eliminating the problem were discussed. In Improve phase, action plan was created with an integration of the daily planning system using an ERP software, CAD programme and development of product prototype using 3D Printer, and Concurrent Engineering. Lastly, in Control phase, APQP system was integrated in order to monitor and control the product design process. After the improvement, there is a reduction in the average percentage of the product rejection from the customers and the average percentage of design quality was also increased. Furthermore, there was a reduction of the design error items found at the launch phase. Lastly, it allowed the company in delivering product as per customer specifications as the results revealed that the degree of customer satisfaction with adherence to the delivery schedules and product as per specifications were increased.
DOI: 10.13145/bacdive124167.20191129.4.1
title: Streptomyces sp.

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.14457/cu.the.2017.238
title: OPTIMAL SIZING, SITING, AND SCHEDULING OF BESS FOR MITIGATINGVOLTAGE PROBLEM IN DISTRIBUTION UTILITIES WITH HIGHPENETRATION OF PV ROOFTOPS

description: For ambition of reducing CO2 emission and reliance on fossil fuels, solar power generation has been received special supports and deployed rapidly in many distribution networks. However, with a high presence of solar power generation, power grid control is no longer simple as conventional one due to natural variation of solar power and large space dispersion of solar power systems. The negative impacts comprise power system stability, electric power quality involving frequency and voltage criteria and other potential issues. Among these impacts, voltage problem is most obvious. Many solutions have been proposed to solve the voltage problem whereas battery energy storage system (BESS) exhibits technically dominant capability in comparison with other ones. However, the price of the battery is, currently, still high, strategies to minimize the operation cost are necessary. This dissertation investigates the BESS, the selected solution for mitigating voltage problem in LV network caused by high penetration of PV rooftops. Two optimal strategies of BESS are proposed to help utilities minimize their operation cost. These strategies cover sitting and sizing of BESSs which is used for long-term planning and scheduling of the installed BESSs for operation planning. Cost evaluations consider aging degradation of the BESS and some additional cost such as O&M cost and so forth. The effectiveness of the proposed methods is demonstrated on a simplified network of Metropolitan Electricity Authority (MEA), Thailand, using Matlab 2016a and Matpower 6.0.
DOI: 10.13145/bacdive124168.20191129.4.1
title: Streptomyces sp.

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.13145/bacdive124169.20191129.4.1
title: Streptomyces sp.

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.14457/cu.the.2017.239
title: PHOTOCATALYTIC DEGRADATION OF METHYLENE BLUE OVER POLYDOPAMINE-AG/TIO2

description: This research investigated the effect of silver and polydopamine (PDA) doping on TiO2 catalysts for the photocatalytic degradation of methylene blue in aqueous phase. Titanium dioxide was synthesized via a sol-gel method and was calcined at 400 °C for two hours. Silver was loaded onto TiO2 by an incipient wetness impregnation method. The amount of Ag was varied from 0.5%wt to 3%wt. Then polydopamine-Ag/TiO2 catalyst was prepared by an impregnation method, using dopamine as a precursor. The amounts of polydopamine were 5%wt and 10%wt. All catalysts were characterized by N2 physisorption, ICP-OES, XRD, FTIR, CO chemisorption, Photoluminescence, and UV-Visible spectrophotometry. The photocatalytic degradation of methylene blue in aqueous phase was conducted under either UV or visible light irradiation. In each experiment the catalyst was dispersed in an aqueous solution of 10 ppm methylene blue. The suspension was stirred in the absence of light for one hour and was then irradiated by either one UV or visible light bulb for a period of two hours. The concentration of methylene blue was measured by a UV-Visible spectrophotometer. Addition of both Ag and polydopamine to TiO2 photocatalyst improved the performance in methylene blue photodegradation under both UV and visible light irradiations. The highest conversion of methylene blue (87.54% under UV irradiation and 78.98% under visible irradiation) was obtained by 10%PDA-2%Ag/TiO2. Addition of Ag improved trapping of electrons and polydopamine transfered electrons to prevent the recombination of photogenerated charge carriers. Moreover, the band gap was narrower and the light absorption in the visible region was enhanced, leading to more photogeneration of electrons and holes.
DOI: 10.13145/bacdive124170.20191129.4.1
title: Streptomyces sp.

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.13145/bacdive124171.20191129.4.1
title: Streptomyces sp.

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.