cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.14455/jgsee.res.2014.30
title: Production of fuels and chemicals by hydrothermal liquefaction of microalgae

description: Microalgae are considered as one of the main renewable fuel crop in the future. Among several valorization pathways, the whole algae hydrothermal liquefaction and further hydrotreatment is an attractive one using all algal biomass and preventing costly drying and extraction methods. In the present study, HTL reaction was optimized for bioliquid production with Spirulina and then applied to the conversion of 4 other microalgae: Ourococcus sp., Porphyridium cruentum, Nannochloropsis occulata and Dunaliella salina. The bioliquids were further hydrotreated in order to get fuel like hydrocarbons. Comprehensive characterization of the products was obtained by HT GCXGC FID.
DOI: 10.14455/jgsee.res.2014.36
title: Life cycle energy analysis of biodiesel from kamani (Calophyllum inophyllum)

description: Kamani or Callophyllum inphyllum is a non-edible seed which has potential to be a feedstock for biodiesel. Kamani trees are mostly found around coastal areas and are also known as forest trees. Kamani seed can be a promising alternative feedstock due to its high oil yield, simple cultivation procedure and non-edible seeds whereas palm oil which is currently used as biodiesel feedstock has environmental concerns and it is also produced for food thus raising issues about food versus fuel. The analysis of the energy inputs and outputs from kamani biodiesel show that its production is efficient because energy from output is higher than the input. Kamani biodiesel can also be considered renewable because its renewability factor at 8.73 is substantially higher than 1.
DOI: 10.14457/ku.the.2010.542
title: การแสดงออกของเลคตินจากใบหม่อนในเซลล์แบคทีเรียและเซลล์แมลงและการศึกษาการจับกันระหว่างเลคตินและน้ำตาลในคอมพิวเตอร์ /|cสุภาภรณ์ สีทะหา
DOI: 10.14455/isec.res.2014.4
title: CONFINING TRANSVERSE REINFORCEMENTS FOR CIRCULAR COMPOSITE HOLLOW RC COLUMN WITH INNER TUBE

description: The confining transverse reinforcement has been arranged in plastic hinge region to resist the lateral load, increasing the lateral confining effect in the substructure of the bridge. Columns increased the seismic performance by securing the stiffness and ductility. The calculation method of confining transverse reinforcements is reported in AASHTO-LRFD specification. This specification is only proposed for solid RC columns. In this reason, if this specification is applied to another column as composite column besides solid RC columns, a proper evaluation of the column cannot be done. In particular, composite hollow RC columns have limits for applying this specification. The composite hollow RC column consists of transverse longitudinal reinforcement, cover concrete, core concrete, and an inner tube inserted on hollow face. It increases the ductility, strength, and stiffness of the composite hollow RC column. This paper suggests a modified equation for an economical and rational design through an investigation of displacement ductility when applied to the existing specifications of the composite hollow RC column. Moreover, parametric study is performed for evaluating the detail behavior. Using these results, a calculation method of economic transverse reinforcements is proposed.
DOI: 10.14455/jgsee.res.2014.12
title: A comparison of catalytic and non-catalytic steam reforming of naphthalene used as biomass gasification tar model compound

description: One of the major issues in the biomass gasification technology is how to deal with the biomass tar. Tar is an undesirable product of biomass gasification because of the various problems associated with the condensation and formation of tar aerosols, which presents significant impediment to the application of biomass gasification systems. Catalytic and noncatalytic tar steam reforming were studied in this research by using naphthalene as a model tar compound. The experiments were conducted in a lab-scale fixed bed reactor operated at 800?C. Catalytic performance on naphthalene decomposition was compared among experiment without catalyst, with 12%Fe/Al2O3, 3%Ni-12%Fe/Al2O3 and 12%Ni3%Fe/Al2O3 catalysts. The results showed that low amount of Ni added, i.e. the case of 3%Ni-12%Fe/Al2O3 catalyst, gave the higher catalytic performance in tar steam reforming when compared with the case of 12%Fe/Al2O3 catalyst and with 12%Ni-3%Fe/Al2O3 catalyst. The carbon conversion into gas was increased to around 27% with the highest production of H2 and CO (i.e. around 37 and 15 mmol/g feed, respectively) among all the cases. This was probably due to the presence of Ni-Fe bimetallic particles on the catalyst.
DOI: 10.14455/jgsee.res.2014.13
title: The application of a genetic algorithm to estimate kinetic parameters for biomass pyrolysis from thermogravemetric data

description: A kinetic study of the pyrolysis process of rice straw was investigated using a thermogravimetric analysis, TGA and the weight loss was measure in nitrogen atmosphere. The samples were heated over a range of temperature from 298 K to 973 K with three different heating rates of 5, 10 and 15 K min-1. The kinetic triplet parameters such as activation energy E, pre-exponential A and reaction model f(?) were obtain by model fitting method which are exercised till date for evaluating the optimum overall kinetics parameters usually applied traditional gradient base optimization techniques but associated with major drawback of attaining global optimum due to uncertainties in selection of initial guess. To overcome such uncertainties and drawbacks, we have, applied the modern evolutionary optimization method (Genetic Algorithms, GA technique) for 14 models to attain the globally optimum kinetic parameters using the experimental TGA data and we did compare the experimental and simulated data to expect the possible mechanism to occur during pyrolysis. As rice straw case studies, the suitability of the models is also tested using the AIC score. 3D diffusion model is the best suited one and it also predicted the experimental TGA data successfully. The Avarami-Erofe'ev nucleation models also show good AIC score and well predicted the experimental TGA data.
DOI: 10.14455/jgsee.res.2014.19
title: Hydrogen production from dry-reforming of biogas over Pt/Mg1-xNixO catalysts

description: Dry reforming of biogas carried out over Pt/Mg1-xNixO catalysts, where x= 0, 0.03, 0.07, and 0.15 with 1 wt% Pt for each, prepared by the co-precipitation method from aqueous solution of Ni(NO3)2.6H2O and Mg(NO3)2.6H2O using K2CO3, then the platinum(II)acetylacetonate impregnated on MgONiO. The synthesized catalysts analyzed by XRD,  FT-IR, XRF, XPS, BET and TEM. at 700?C, the catalysts reduced by H2 prior to each reaction. The order of conversions of CO2 and CH4 at 900?C of the reduced catalysts after being on the stream for 200 h was as follows: Pt/Mg0.85Ni0.15O &gt; Pt/Mg0.93Ni0.07O &gt; Pt/Mg0.97Ni0.03O &gt; Pt/MgO with a CH4:CO2 mole ratio of 2:1 that displayed the best resistance to deactivation by carbon formation and formed high selectivity of H2 and CO. The dry reforming reaction was also carried out with the presence of low concentrations of oxygen (1.25%) flow and showed an enhancement in the conversion of CH4.
DOI: 10.14455/jgsee.res.2014.47
title: Development of an Integrated Assessment and Planning Tool for Tidal Current Energy in the Philippines: A Progress Report

description: This paper presents a framework and some initial results of the efforts to develop an integrated assessment and planning tool for tidal current energy in the Philippines. Considerations related to site (e.g. resource, grid proximity, bathymetry, etc.), and technology (e.g. technical specs, cost, depth limitations, etc.) have been captured and integrated into a tool designed to be used by agencies and project developers in evaluating the potential sites where tidal in-stream / current energy can be extracted. The same framework can be applied to different types of ocean renewable energy (ORE) for the Philippines and even other countries. Considering a multi-criteria, multi-technology, and multi-site approach towards the development of the ORE industry can be a good way to progress the uptake of such alternative source of energy.
DOI: 10.14457/ku.the.2011.463
title: การโคลน การหาลำดับเบส และการแสดงออกของยีน SoNHX1 ที่ตอบสนองต่อสภาวะทนเค็มจากอ้อย
DOI: 10.14455/isec.res.2014.3
title: FLEXURAL PERFORMANCE OF RC BEAMS UNDER TROPICAL CLIMATE EFFECTS UNDER TROPICAL CLIMATE EFFECTS UNDER

description: This study investigates the flexural performance of RC beams under the effects of a tropical climate. Effects from the tropical climate, such as heat and rain throughout the year, may cause deterioration to the surface of concrete. Concrete will gradually erode and may expose the steel inside the beam. If the steel is exposed, it may be oxidized, thus decreasing the strength of the RC structure. To avoid this situation from happening, the Near Surface Mounted (NSM) method of strengthening may be applied as an alternative. Three beams with the size of 125 mm x 300 mm x 1800 mm (width; height; length) were constructed for this study. The first one is a beam without strengthening, while the other two beams were strengthened with CFRP plate horizontally positioned on the tension zones, where one beam is placed under room temperature conditions, while the other is left to endure the conditions of the tropical climate for a period of 6 months. All three beams were then tested under a four-point bending test. Results show that the strengthened beam placed under room temperature conditions has 1% more flexural strength compared to the exposed beam. The exposed beam, however, has 21% more flexural strength compared to the control beam. Thus, NSM is proven to strengthen beams even in a tropical climate.
DOI: 10.14455/jgsee.res.2014.21
title: Overview of biofuels sustainability and future in ASEAN context

description: This review was motivated by the notion of intergenerational equity, which inherently should contain the concept of sustainability. Six kinds of biofuel feedstock were compared with three different principles of sustainability; social, economical, and environmental. The types were: Palm oil, soybeans, jatropha, cassava, sugarcane, and lignocellulosic biomass. ASEAN region figures were used for comparison when attainable.  On all three accounts the best result were gained from lignocellulosic biomass and the two types of feedstock that were chosen to represent the larger class of lignocellulosic biomass; Napier- and switchgrass.  They were used to emulate feedstock cultivation for biofuel purposes rather than using agricultural waste. Jatropha's low yield keeps it from being a serious contender. Lastly, the high price of palm oil keeps it from being an economical feedstock, but necessary as a food oil.
DOI: 10.14455/isec.res.2014.10
title: LOCAL BUCKLING BEHAVIOR OF DOUBLE-COPED STEEL BEAMS

description: Local web buckling is one of the most common failure modes for coped steel beams. While several studies have been undertaken focusing on the behavior of top-flange/single-coped beams, double-coped beams have received little attention. To fill this knowledge gap, this paper presents experimental and numerical studies on local web buckling behavior of double-coped steel beams. Five full-scale tests were conducted, and the main test parameters were cope length and cope depth. Local web buckling was observed as the main failure mode for all of the five specimens, and the buckling resistance was found to decrease with increasing cope length and cope depth. A FE study was subsequently conducted, where the response of the FE models agreed well with the test results, especially in terms of buckling mode and buckling resistance. The test and FE results were compared with those predicted by an existing design approach. The design results were found to be quite conservative, and hence further investigation may be required to achieve a more accurate design approach. procedure and faster computational efficiency than the Modal Pushover Analysis (MPA) procedure for irregular bridges.
DOI: 10.14455/isec.res.2014.15
title: FRACTURE-PROCESS ZONE ANALYSIS OF REINFORCED BARS VERTICAL TO MATRIX CRACKS

description: This study focuses on a crack mechanics model?an infinite center-cracked concrete panel with a steel bar across a crack loaded by uniform tensile stress, under which the slip between reinforcement and concrete is neglected and the force produced by the reinforcement is regarded as a centralized force to close the upper and lower surface of the crack. The critical sizes of the fracture process zone (FPZ) are obtained by the use of a power-exponent tensile-strain softening model under the maximum tensile stress criterion and the maximum tensile strain criterion. The results show that the critical sizes of fracture process zone at both crack tips decrease with the increasing steel bar area, but the distance between the reinforcement and the crack tip or the decreasing Poisson ratio increase with the increasing of the tensile-strain softening index.
DOI: 10.14455/isec.res.2014.7
title: THE CORROSION BEHAVIOR OF WEATHERING STEEL UNDER DIFFERENT CORROSIVE ENVIRONMENTS

description: Weathering steel is a kind of steel that can reduce the corrosion rate by generating a dense protective rust on the steel surface that exerts anti-corrosion performance. Exposure tests of weathering steel with saltwater spraying were performed under three different conditions. When the consistency of sodium chloride solutions was small (0.5% and 1.0%), the effect of rain rinse was observed. However, large consistencies of sodium chloride solutions provided small differences in rust thickness between open air and under roof conditions. From the results of iron transfer resistance measurements, it was observed that protective rust was generated only in a few cases. This result indicated that generation of protective rust was strongly dependent on the corrosive environment. From the results of exposure tests, it became clear that the change of rust thickness with time can be estimated as an exponential function. The constants in the exponential function can be expressed as a function of consistency of sodium chloride solutions.
DOI: 10.14455/jgsee.res.2014.33
title: Techno-economic and ecological assessment approaches for new biomass value chains

description: Utilization of biomass for energetic and material purposes aims to substitute fossil carbon sources to achieve more sustainable value chains. Sustainability analysis and assessment approaches play an important role in the development of these new bio-based supply chains to support the technological development by identifying key figures and providing an objective basis for the discussion and communication of such concepts with stakeholders and political decision makers. This article proposes a framework for analysis and assessment of bio-based value chains at an early process development stage with adaptability for relevant particularities of the considered value chain. The framework is applied for three case studies - the assessment of a lignocellulosic biorefinery concept, an integrated biorefinery concept for several biotechnological and chemical conversions of various domestic oil seeds and an assessment approach for a biochar value chain with thermochemical conversion technologies and biochar application for soil improvement.
DOI: 10.14455/jgsee.res.2014.35
title: Development of efficient separation method of extract and solvent in degradative solvent extraction of low-rank coals or biomass wastes

description: The authors have recently proposed a novel method that not only dewaters but upgrades low-grade carbonaceous resources such as biomass, peat, lignite, and sub-bituminous coals. The method comprises a treatment of the raw materials in non-polar solvent, such as 1-methylnaphthalene, at temperatures below 350?C, and subsequent separation of the upgraded samples into extract, residue, and gaseous product consisting of CO2 and a negligible amount of hydrocarbon gases at the treatment temperature.  The extract is further separated into solvent-soluble fraction, Soluble, and solvent-insoluble fraction, Deposit, at room temperature. The method can produce a large amount of Soluble which consists of ashless, carbon-rich, low-molecular-weight compounds. From the viewpoint of practical application of the proposed method, it is desired to reduce the energy required to separate the Soluble from solvent. In this study a treatment using the solvent saturated with the Soluble has successfully been proposed in order to omit the energyconsuming distillation process of the solvent by enabling solid-liquid separation of the Soluble and solvent.
DOI: 10.14455/jgsee.res.2014.44
title: A study of transmission and illumination of light through rectangular light pipes with bends

description: Light pipes can bring daylight from the sky into deep interior spaces of a building. A pipe is often connected with a bend so as to orient the entry port in the direction that optimizes light reception and transmission. Another bend is connected before the exit port to optimize delivery of light into a room. This paper presents results of modeling, experiments, and simulation of transmission of beam and diffuse daylight through rectangular light pipes.  Analytic method is used for tracing light rays from the source into the bend through to the straight section and through to the bend and then the exit port into the room, or forward raytracing method. The curve surface of the bend is modeled as a pie bend section. The interior surface of each section is specular but may have different reflectances. The algorithms of calculation are coded in MATLAB scripts and functions.  The interior surfaces of the rectangular light pipe and bends are lined with a film of reflectance of 99%. A set of experiments was conducted indoor using an LED lamp as a point source. Results of calculation using the method match closely with those from experiments.
DOI: 10.14455/jgsee.res.2014.59
title: Energy use amongst 'new modern energy consumers' in the Greater Mekong Sub-region

description: Energy consumption is expected to rise over the next century, and much of this increased demand will be located in Asia.  In particular, it is the emerging middle classes who are expected to drive future consumption patterns.  This paper presents the results of a household survey that investigated energy consumption and energy efficiency amongst 'new Modern Energy CONsumers' in the Greater Mekong Sub-region (Cambodia, Laos, Myanmar, Thailand and Vietnam).  New modern energy consumers are defined as those who live on US$2-5 per day, and who have access to electricity.  This paper focuses on patterns of household energy consumption (for cooking, lighting and appliances), and awareness of energy efficiency.  It finds that fuel stacking is common practice amongst this income group, both for cooking and lighting, and that biomass continues to be a widely-used cooking fuel.  The use of electrical appliances, such as cookstoves, mobile phones and refrigerators, is also common across the five countries.  Operating costs are an important factor for households, while energy efficiency labels have a positive influence on purchasing behaviours.  This paper concludes that further work will be required to raise awareness of energy efficiency labels.
DOI: 10.14457/ku.the.2009.684
title: การใช้ Schizochytrium limacinum ในการอนุบาลลูกกุ้งขาวแวนนาไม (Litopenaeus vannamei,Boone) และผลที่มีต่อระบบภูมิคุ้มกันและความทนทานต่อความเครียด
DOI: 10.14455/isec.res.2014.23
title: COMPARATIVE EFFICIENCY BETWEEN STRUCTURAL SYSTEMS FOR COMPLEX-SHAPED TALL BUILDINGS

description: This paper presents various structural system design options for complex-shaped tall buildings?such as twisted, tilted, and freeform tall buildings?and evaluates their comparative structural efficiency. For each complex form category, tall buildings are designed with different contemporary tall building structural systems, e.g., diagrids, braced tubes, and outrigger systems. Comparative structural efficiency between these systems in conjunction with building forms and height is studied. The heights of the studied buildings range from 60 to 100 stories, and the corresponding height-to-width aspect ratios range from 6.5 to 10.8. Parametric structural models are generated with Rhino/Grasshopper to investigate the impacts of various important geometric configurations of complex-shaped tall buildings, such as the rate of twist, angle of tilt, and degree of fluctuation of free form. The parametric models are exported to structural engineering software SAP2000 for analyses and design. Based on the study results, comparative structural efficiency between different structural systems of each complex form category is presented.
DOI: 10.14455/isec.res.2014.9
title: SEISMIC PROGRESSIVE COLLAPSE ANALYSIS OF CONTROLLED STEEL FRAME STRUCTURES

description: Any element loss in the concentrically-braced frames (CBF) system significantly affects its seismic performance. The research presented in this paper aimed to understand the behavior of this system against seismic progressive collapse due to the failure of a column. A collapse of this magnitude may lead to the entire collapse of the structure, or else it could avoid or even localize the disaster by redistributing the released load to the surrounding structure. The progressive collapse phenomenon was investigated through analyzing a building equipped with CBF system during a seismic event. Four cases of failed beams were considered, depending on the location of the column loss and the configuration of the braces surrounding them. Through OpenSees simulation, the results showed the seismic and gravity loads increased and rapidly reached the ultimate state of the structure from 0.6 sec after the time of failure. The model for each scenario, regardless of the direct collapse of the structure due to the column loss, indicated the CBF system limited the plastic hinge formation around the failed element. Finally, the results showed the braces working in tensile are more reliable in terms of collapse resistance than those working in compression.
DOI: 10.14455/jgsee.res.2014.43
title: Wave energy potential for power generation in the Gulf of Thailand

description: Regional wind-wave model is the computational model which is applied from the WAve Model (WAM). The data of regional hindcast, operational WAM model, and wind data are used in the validation and calibration. Then, the Simulating Waves Nearshore (SWAN) wave model is used for the calculation of nearshore wave parameters, spectral time series and statistics. Due to the high cost of full SWAN model, utilization of the offshore WAM model results together with nearshore satellite observations is a cost-effective alternative. In the area of Gulf of Thailand (GOT), it is found from WAM and SWAN that areas of the GoT present a stable wave energy and power. Moreover, the average significant wave height is also used to preliminarily evaluate the wave power. From the previous study, it was found that the station S11 is the station with the highest significant wave height of 2.6 m. It was also found that the highest significant wave height can be found in September. As the result the suggested potential locations for wave energy are stations S7-S14. For the extreme case of typhoon Linda in 1997, the highest significant wave height is 2.71 m at S16. Moreover, the average significant wave height and wave power in September 2011 were studied. The results show a good agreement with the previous study that stations S7-S14 are the stations with high potential. However, the results of stations S11, S13, S14 seem to show the highest potential of power generation amongst all stations.