cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.14457/cu.the.2014.269
title: DETERMINATION OF MIX PROPORTION OF HARDENED CONCRETE CONTAINING FLY ASH OR LIMESTONE POWDER

description: Nowadays, several techniques have been developed to identify mix proportion of hardened concrete. However, there is no universally applicable method for accurately determining mix proportion of hardened concrete because of the wide variety of materials from which concrete is made and the conditions to which it may have been subjected. The analysis is more complicated if fly ash or other admixtures are used in the concrete. Moreover, a promising method developed to identify the concrete mix design encompassing binder type, w/b, binder content and aggregate content does not exist. Even though standards such as ASTM C1084 and BS 1881: Part 124 described the methods for determining the cement content and other concrete compositions in the hardened concrete, they are applicable only for OPC concrete but not appropriate for concrete containing fly ash or limestone powder. In this study, a method for estimating mix proportion of hardened OPC concrete, fly ash concrete, and limestone powder concrete is proposed. Both physical and chemical methods were adopted for the analysis. The varying properties of fly ashes and limestone powders generally used in Thailand were taken into consideration. The degree of hydration of cement and the degree of pozzolanic reaction of fly ash were also taken into account in the analysis in order to cover the effect of age of concrete. The analytical procedures for evaluating fly ash and limestone powder existence and determination of water to binder ratio, fly ash replacement ratio, limestone powder replacement ratio and content of concrete compositions are described. In the analysis, three major investigation techniques are implemented. Image processing technique is used for determination of coarse aggregate content. Water to binder ratio can be calculated from data back analysis of the compressive strength by using the computer software, “FACOMP”. Cement, fly ash, limestone powder and sand contents are obtained from a set of mass balance equations. The proposed equations were applied to estimate mix proportions of concrete prepared in the laboratory with known mix design in order to verify efficiency of the proposed method. From the analytical results, it was found that the proposed method could be used to precisely estimate mix proportion of concrete with different types and replacement ratios of binder, different water to binder ratios, and different aggregate contents, at any age of concrete. The effect of age of concrete on determination of mix proportion of hardened concrete can be covered by taking into account the time-dependent degree of hydration in the analysis.
DOI: 10.14457/cu.the.2014.270
title: PERFORMANCE ANALYSIS AND CONTROL OF SOLID OXIDE FUEL CELLS WITH DIRECT INTERNAL REFORMING

description: This research focuses on the performance analysis and control of a solid oxide fuel cell (SOFC) with direct internal reforming using methane as fuel. Firstly, the steady state analysis is performed to design the optimal operational condition for this system. The direct internal reforming of methane in SOFC can utilize the heat from the exothermic electrochemical reaction to produce hydrogen-rich gas, leading to an increasing system efficiency. However, the coupling of the endothermic reforming and electrochemical reactions results in a complicated dynamic response. Therefore, the effect of input variables on the cell temperature and cell voltage is analyzed to investigate the dynamic behavior that is important for design a controller. It is found that the cell operating temperature and cell voltage are dependent on the fuel and air inlet temperature as well as the current density. Next, to achieve the efficient control system, the control structure design of the SOFC is considered to identify good controlled variables and manipulated variables. The concept of a controllability analysis is applied to the control system design of the SOFC for the selection of input-output pairings by considering the relative gain array (RGA). The result shows that the inlet molar flow rates of air and fuel are manipulated variables to control the cell temperature and the content of fuel, respectively. Finally, the conventional and advanced control techniques are designed and implemented to control the cell temperature, the content of methane and the cell voltage. In this research, the model predictive control (MPC) that is a model-based control strategy is proposed for SOFC control. In general, MPC requires the accurate and reliable model of the process to be controlled. However, the SOFC model is complicated and involves uncertain parameters. Therefore, an off-line robust MPC algorithm is developed and employed for controlling the SOFC. The robust MPC algorithm based on linear time-varying (LTV) and linear parameter varying (LPV) systems is also studied. The simulation results show that under the model uncertainty, the proposed robust MPC can control the SOFC and guarantee the stability of the SOFC. The robust MPC algorithm using the LPV model of the SOFC can achieve a better control performance because the model parameters are on-line updated and used in the control calculation.
DOI: 10.25934/00004274
title: A Randomized, Open-label Study Comparing the Effects of Olanzapine Pamoate Depot With Oral Olanzapine on Treatment Outcomes in Outpatients With Schizophrenia

description: Vivli is an independent, non-profit organization that has developed a global data-sharing and analytics platform to serve all elements of the international research community. Our mission is to promote, coordinate, and facilitate scientific sharing and reuse of clinical research data through the creation and implementation of a sustainable global data-sharing enterprise. The Vivli platform includes an independent data repository, in-depth search engine and a cloud-based, secure analytics platform.
DOI: 10.5281/zenodo.3340176
title: Mapping of the calving front of Hart, Sharp, Melville and Farquhar glaciers, Northwest Greenland, by UAV photogrammetry

description: These data contain photogrammetrical data collected by unmanned aerial vehicle (UAV) in July 2017 in the Inglefield Bredning. The data include processed data (orthoimage and digital elevation models) with the Structure-fom-Motion photogrammetrical software Agisoft Photoscan. Data are organized by glacier surveys with the following convention GLACIER_YYYYMMDD_HHMM. For instance : farquhar_20170705_1914 contains the Data of the survey of Farquhar glacier that started on July 5, 2017 at 19:14 UTC time. Coordinate system used is UTM Zone 19N based on WGS84 Take-off and landing site lattitude and longitude was ( 77.497424 , -66.678433 ) This paper is related to the article "High-endurance UAV for monitoring calving glaciers: Application to the Inglefield Bredning and Eqip Sermia, Greenland", G. Jouvet, Y. Weidmann, E. van Dongen, M. Lüthi, A. Vieli, J. V. Ryan, Frontiers in Earth Sciences
DOI: 10.5281/zenodo.3340177
title: Mapping of the calving front of Hart, Sharp, Melville and Farquhar glaciers, Northwest Greenland, by UAV photogrammetry

description: These data contain photogrammetrical data collected by unmanned aerial vehicle (UAV) in July 2017 in the Inglefield Bredning. The data include processed data (orthoimage and digital elevation models) with the Structure-fom-Motion photogrammetrical software Agisoft Photoscan. Data are organized by glacier surveys with the following convention GLACIER_YYYYMMDD_HHMM. For instance : farquhar_20170705_1914 contains the Data of the survey of Farquhar glacier that started on July 5, 2017 at 19:14 UTC time. Coordinate system used is UTM Zone 19N based on WGS84 Take-off and landing site lattitude and longitude was ( 77.497424 , -66.678433 ) This paper is related to the article "High-endurance UAV for monitoring calving glaciers: Application to the Inglefield Bredning and Eqip Sermia, Greenland", G. Jouvet, Y. Weidmann, E. van Dongen, M. Lüthi, A. Vieli, J. V. Ryan, Frontiers in Earth Sciences
DOI: 10.5281/zenodo.3341559
title: Dataset: Climate experts' views on geoengineering depend on their beliefs about climate change impacts

description: This is the dataset and corresponding do-files to reproduce the main results from the Paper "Climate experts’ views on geoengineering depend on their beliefs about climate change impacts" and from the Supplemenatary Information. This fith versions incorporates additional work done after journal review.
DOI: 10.5281/zenodo.3341570
title: Water Quality Classes - Recommended Water Quality Based on Guideline and Typical Wastewater Qualities

description: This dataset compiles water quality standards for different end-uses based on most prominent guidelines. The value "-1" signifies no limit specified or no data available. The dataset also contains a list of typical wastewater qualities for several types of wastewater to be reused. The dataset contains the following two document: Water Quality Classes - Typical Wastewater Qualities and Recommended Water Quality Based on international Guidelines(Dataset) - PDF
DOI: 10.5519/qd.46pmkixc
title: Query on the Natural History Museum Data Portal (data.nhm.ac.uk) (7085 records)
DOI: 10.14457/cu.the.2014.271
title: FISCHER-TROPSCH SYNTHESIS OVER COBALT SUPPORTED ON ELECTROSPUN SILICA FIBERS

description: This research aimed to study the preparation of electrospun silica fibers (SF) and using as catalyst support. SF were synthesized from TEOS by a facile combination of sol-gel and electrospinning methods and then used as supports for cobalt catalysts in the Fischer-Tropsch synthesis (FTS) reaction. The optimized condition for SF preparation was a 15 cm TCD and 15 kV applied voltage to produce continuous SF with a submicron diameter of 0.83 µm. Then, SF were modified by in situ hydrothermal synthesis of the zeolite ZSM-5 on the SF (ZSM-5/SF) at 170oC for 24 h. ZSM-5/SF support was used to prepare supported cobalt FTS catalysts. Their catalytic performance in the FTS was tested. The FTS using the ZSM-5 modified SF supported Co catalysts showed a high selectivity to C5˗C11 hydrocarbons with a high CO conversion level. Moreover, different SF supported cobalt catalysts were prepared by impregnation (IM), strong electrostatic adsorption (SEA), deposition precipitation (DP) from either sodium hydroxide (DPNa) or ammonia solution (DPNH), and hydrothermal synthesis (HT). The preparation methods significantly affected the catalytic activity of the obtained catalysts, with their catalytic activity in the FTS reaction being ranked (highest to lowest) in the order of SEA &gt; DPNH = DPNa &gt; IM &gt;&gt; HT. The size of the Co3O4 particles in the cobalt supported on SF catalysts ranged from 4 nm to 30 nm of diameter. The excellent catalytic activity of the Co/SF-SEA catalyst could be attributed to the smaller size of the cobalt particles and their higher dispersion level.
DOI: 10.14457/cu.the.2014.272
title: INFLUENCE OF REEF FISH GRAZING ON JUVENILE CORALS

description: Fish diversity and abundance were investigated at reefs around Royal Thai naval base, Sattahip area. A total of 46 species in 17 families were recorded in the area. The Pomacentridae was the dominant coral reef fish group followed by Chaetodontidae and Labridae similar to previous study in nearby areas. The results also showed that fish assemblages differed significantly among each location. The results from the Jaccard similarity index showed the highest similarity was found between at Ko Kham and Ko Tao Mo. The similarity in fish diversity among these two study sites may be caused by coral compositions and percentages of coral cover. Then, feeding behaviors and effect of grazing by fish on corals studies, field and laboratory experiments were conducted by 5 species those dominant in the area (Siganus javus (Linnaeus 1766), Halichoeres chloropterus (Bloch 1791), Scarus ghobban (Forsskål 1775), Abudefduf bengalensis (Bloch 1787), and Chaetodon octofasciatus (Bloch 1787)). The result showed that there was no variation of fish feeding behaviors throughout the day and the bite rates on corals of fish varied depending on species. Significantly differentiations of bite sizes on corals were founded between fish species. C. octofasciatus clearly bit on live corals (100%). In laboratory experiments, similar to field observations, C. octofasciatus preyed on corals more than other fish species. In this study also founded that C. octofascitus grazed more on a massive coral, Platygyra than branching coral, Acropora that different from previous studies. It may be most efficient for the butterflyfish to trade off prey preference and consume available prey during the trails. This way also reduces the mortality risk. Hence, the high consumptions of Platygyra by C. octofasciatus may reflect the food availability condition. Caging experiments were done for test the hypothesis that the exclusion of large invertebrates and fish would result in increasing outplanted-coral growth and survivorship. Three treatments were set: no cage, fish exclusion cage, sea urchin and fish exclusion cage. Growth rate and survival rate of corals were examined for 4 months. The results showed that percent changes of surface areas of Acropora millepora in cage with sea urchins were significantly greater than in either no cage or cage without sea urchin. Without sea urchins in the cages, the Acropora millepora growth could be affected by the amount of algal biomass. The result also showed that exclusion of herbivores could increase survivorship of juvenile corals and presence of grazers can reduce the pressure of coral-algal interaction.
DOI: 10.14457/cu.the.2014.273
title: STRUCTURE MODIFICATION OF OXYRESVERATROL FOR DNA PROTECTIVE PROPERTY AND INHIBITORY ACTIVITIES AGAINST HERPES SIMPLEX VIRUS AND AVIAN INFLUENZA NEURAMINIDASE

description: Oxyresveratrol, or 2,3′,4,5′-tetrahydroxystilbene, is a secondary metabolite found in large amounts in the heartwood of Artocarpus lakoocha Roxb. (Moraceae). Because of the wide range of potential biological activities, together with the easy extractability from the plant material, oxyresveratrol was chosen as a lead structure for chemical modification in an attempt to prepare polyoxygenated stilbenes with higher potency and selective activity. In this study, several types of reactions were carried out, including O-alkylation, O-acylation and aromatic substitution. As a result, a total of twenty-six derivatives were prepared. Biological studies of these semi-synthetic products were conducted, in comparison with the parent compound, to investigate their DNA protective activity, and their inhibitory activity against the herpes simplex virus and the enzyme avian influenza neuraminidase. In addition, these compounds were further evaluated for their anti-α-glucosidase activity and cytotoxicity against selected cancer cells. In this study, a new assay for DNA protective activity was developed and then applied on oxyresveratrol and its semisynthetic analogues. Oxyresveratrol was found to possess stronger DNA protective activity than Trolox and ascorbic acid. Sixteen of the prepared analogues showed activity even higher than the parent compound, with an 7-fold increase of the activity observed for the most potent compound, 2,4,3′-tri-O-methyloxyresveratrol. This same compound was also the strongest analogue against herpes simplex virus; it was about 4-time as strong as oxyresveratrol. Three other derivatives were also found to possess enhanced anti-HSV activity. Regarding the inhibitory activity on the enzyme neuraminidase, only 5-carboxyoxyresveratrol exhibited activity close to that of the precursor, whereas the others were less active. Concerning the cytotoxicity against cancer cells, sixteen and ten oxyresveratrol derivatives were active against KB and MCF-7 cells, respectively. 3′,5′-O-Diacetyl-2,4-di-O-isopropoyloxyresveratrol was the most cytotoxic compound against KB cells, while 2,4,3′-tri-O-isopropyloxyresveratrol was the most potent against MCF-7 cells. Interestingly, the latter was also found to have anti-α-glucosidase activity approximately equal to that of oxyresveratrol.
DOI: 10.14457/cu.the.2014.274
title: PREPARATION AND CHARACTERIZATION OF GAMMA-RAY IRRADIATED GELATIN/PVA HYDROGEL CONTAINING SILVER NANOPARTICLES

description: Wound dressing is an important medical product. Antibacterial wound dressing has an important role in an infection wound care. However, antibacterial wound dressing is expensive and has a few domestic manufacturing. This study aimed to prepare a hydrogel antibacterial wound dressing from gelatin and polyvinyl alcohol (PVA). The gelatin hydrogels and gelatin/poly(vinyl alcohol)(PVA) hydrogels were prepared by gamma irradiation. A 15 wt% gelatin solution was mixed with a 15 wt% PVA solution at different weight ratios of 100:0, 80:20, and 60:40 w/w, and irradiated at 30, 40, or 50 kGy. The results showed that the addition of PVA can enhance both the durability and the mechanical integrity. The hydrogels made from the 60:40 composition at 30 kGy were the most appropriated selection. This condition was then chosen to add silver nitrate (AgNO3) at 0.25, 0.50, 0.75, or 1.00 wt% (based on solid content). Formation of silver nanoparticles (AgNPs) was discovered after irradiation. The AgNP/gelatin/PVA hydrogels were characterized for their physical properties, cytotoxicity, and antibacterial activity against Escherichia coli (E. coli), Staphylococcus aureus (S. aureus), and Methicillin-resistant S. aureus (MRSA). The results indicated that the AgNP/gelatin/PVA hydrogels had a potential to used as an anti-bacterial wound dressing. The hydrogels in this study had appropriate physical properties, low-cytotoxicity, and antibacterial activity.
DOI: 10.14457/cu.the.2014.275
title: Determination of Effective Dose from Neutrons and Scatter photons in 3D, IMRT and VMAT

description: The scatter photons and neutrons from high energy photon beams (more than 10 MV) will increase the undesired dose to the patient and the staff working in linear accelerator room. This undesired dose which is found at out-of-field area can increase the probability of secondary malignancy. The purpose of this study is to determine the equivalent dose of scatter photons and neutrons generated by 3 different treatment techniques: 3D-conformal, IMRT and VMAT. The measurement was performed using two types of the Optically Stimulation Luminescence (OSL and OSLN) detectors in the Alderson Rando phantom that was irradiated by 3 different treatment techniques following the actual prostate cancer treatment plans. The scatter photon and neutron equivalent dose were compared among the 3 treatments techniques at the surface in the out-of-field area and the critical organs. Maximum equivalent dose of scatter photons and neutrons was found when using the IMRT technique. The neutrons showed average equivalent doses of 0.26, 0.63 and 0.31 mSv/Gy at abdominal surface region which was 20 cm from isocenter for 3D, IMRT and VMAT, respectively. The scattered photons equivalent doses were 6.94, 10.17 and 6.56 mSv/Gy for 3D, IMRT and VMAT, respectively. For the 7 organ dose measurements, the scattered neutron and photon equivalent doses in out of field from the IMRT plan were highest. At the liver which was the nearest organ at out of field, the average equivalent dose were 0.73, 10.23 mSv/Gy for neutron and photon, respectively. The result revealed that the scatter equivalent doses for neutron and photon were higher for IMRT. The equivalent doses for VMAT were slightly higher than 3D. So the suitable treatment techniques should be selected to benefit the patient and the treatment room staff.
DOI: 10.14457/cu.the.2014.276
title: INNOVATIVE NEUTRON SHIELDING MATERIAL COMPOSING OF NATURAL RUBBER-STYRENE BUTADIENE RUBBER BLENDS AND DIBORON TRIOXIDE

description: Utilization of neutron sources requires careful safety precaution because neutrons have no electric charge and have high penetrating power. Therefore, the use of neutron shielding material is one of the methods to effectively prevent neutron radiation hazard. In this research work, neutron shielding materials were designed using the Monte Carlo N-Particle (MCNP) code in order to select proper materials and dimensions for neutron shielding. Thicknesses of 1 cm and 10 cm were chosen for shielding thermal neutron (10-8 - 10-2 MeV) and neutron in the entire energy spectrum (10-8 - 100 MeV), respectively. Simulation results indicated that the best shielding material for thermal neutron composed of natural rubber (NR) and SBR rubber blend in the 1:1 ratio with 60 part per hundred rubber (phr) diboron trioxide (B2O3), which can reduce the neutron dose from the Am-Be source by 53.91% with the total macroscopic cross section of 0.076 cm-1. For shielding neutron in the entire energy spectrum, the best shielding material was four alternating layers of NR with 100 phr iron (III) oxide (Fe2O3) and of NR and SBR blend in the 1:1 ratio with 10 phr diboron trioxide (B2O3), each layer having 2.5 cm in thickness. This shielding material can reduce the neutron dose by 72.56%. Addition of 1 mm cadmium sheets on the front and back sides offered the most additional neutron shielding performance. Comparison of the cubical, cylindrical and spherical shapes of the neutron shielding material with the same volume revealed that the spherical shape offered the best shielding performance for neutron in the entire energy spectrum. The optimal neutron shielding materials were fabricated and neutron radiography was performed to determine the homogeneity of the absorbing and scattering materials added to the rubber matrix. Result revealed good homogeneity throughout the shielding materials. Assessment of the produced secondary gamma ray by Prompt Gamma Neutron Activation Analysis (PGNAA) revealed a low-dose 478 keV gamma ray. Therefore, the designed shielding material can be utilized to effectively shield against neutrons.