cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.14457/cu.the.2015.215
title: Analysis of cracks in transversely isotropic, linear elastic half-space by weakly singular boundary integral equation method

description: This dissertation presents an efficient numerical technique for the analysis of stress intensity factors and T-stress components for arbitrary-shaped cracks in a homogeneous, linear elastic half-space under various conditions on the free surface. The key governing equations are established in a form of weakly singular boundary integral equations involving both unknown relative and sum of the crack-face displacements. A systematic regularization technique based on the integration by parts and special decompositions of singular kernels is adopted to regularize all involved strongly singular and hyper-singular integrals to those containing only weakly singular kernels and requiring only continuous crack-face data for their validity. Besides the direct consequence of the weakly singular nature, the governing integral equations also possess several positive features such as no requirement of free-surface discretization and the capability to treat material anisotropy, non-planar crack geometry and general crack-face loading conditions. In numerical implementations, a weakly singular, symmetric Galerkin boundary element method along with the special near-front approximation is employed to solve the traction integral equation for the relative crack-face displacement. The sum of the crack-face displacement is then obtained by solving the displacement integral equation via standard Galerkin method. The stress intensity factors and the T-stress components along the crack are extracted directly from the near-front relative and sum of the crack-face displacement data. Obtained numerical results for various scenarios clearly demonstrate the accuracy, convergence and capability of the proposed technique.
DOI: 10.14457/cu.the.2015.216
title: Carbon dioxide reforming of methane over Ni-Co catalysts supported on Al2O3-HY zeolite

description: In this research, the effect of Si/Al molar ratios (15, 200 and 500) of HY zeolite in bimetallic Ni-Co over Al2O3-HY zeolite catalysts prepared by incipient wetness impregnation method was studied. In addition, the effect of support ratios of Al2O3 and selected HY zeolite in bimetallic Ni-Co catalysts was investigated as follows: 3:1, 1:1 and 1:3, and compared to the Al2O3 support and HY zeolite support in Ni-Co catalysts. All catalysts were tested in carbon dioxide reforming of methane reaction at 700 ◦C of reaction temperature under atmospheric pressure and characterized by various techniques. From the results, it was found that Si/Al molar ratios of HY zeolite and support ratio of Al2O3 and HY zeolite affect catalytic activity in carbon dioxide reforming of methane, evidenced by characterization results. Among all catalysts, HY zeolite with Si/Al molar ratios of 500 in bimetallic Ni-Co over mixed Al2O3-HY500 with a support ratio of 1:3 exhibited the highest CH4 and CO2 conversions and H2 selectivity, and lowest CO selectivity. The best catalytic performance was resulted by the highest metal dispersion which are highest amount of Ni and Co active sites, a lower total acidity leading to greater affinity for CO2 adsorption, a shift of reduction temperature to lower temperature which are easy reducibility for metal and high stability in spite of highest carbon deposition.
DOI: 10.14457/cu.the.2015.217
title: Analysis of generalized T-stress for cracks in 3D linear piezoelectric media under various crack-face conditions by BEM

description: This thesis presents an efficient and accurate numerical procedure for the determination of the generalized T-stress components of cracks in a three-dimensional, linear piezoelectric, infinite medium under various crack-face conditions. The key formulation is established in terms of dual weak-form boundary integral equations involving only the crack-face data and weakly singular kernels. This pair of integral equations is then integrated with one of the four crack-face conditions including impermeable, permeable, semi-permeable and energetically consistent conditions to form the complete boundary value problem for a piezoelectric cracked medium. The boundary integral equation for the jump in the crack-face generalized traction coupled with the crack-face condition is solved first for the jump in the crack-face generalized displacement. In the solution procedure, a weakly singular symmetric Galerkin boundary element method and the special near-front approximation are adopted in the discretization whereas a system of nonlinear algebraic equations arising from the semi-permeable and energetically consistent crack-face conditions is solved by standard Newton-Raphson algorithm. Once the jump in the crack-face generalized displacement is completely determined, the sum of the crack-face generalized displacement is then obtained by solving the remaining integral equation via a standard Galerkin technique. This solved crack-face data is then employed to directly extract the generalized T-stress components along the crack front. Results from numerical experiments of various scenarios indicate that the proposed technique yields highly accurate numerical solutions and is computationally robust. In addition, the predicted generalized T-stresses are significantly influenced by the crack-face condition adopted in the modeling.
DOI: 10.5281/zenodo.4020337
title: Global CO2 uptake of cement in 1930-2019

description: This dataset is associated with the publication on Earth System Science Data, with the same title. It includes four sections including the model inputs of the estimation models, the simulation results of global CO<sub>2</sub> emission and uptake by year, the variables and ranges considered in the uncertainty analyses of the uptake estimation and the corresponding confidence intervals from the analyses. For detailed explanations of these datasets, one should should refer to the original manuscript.
DOI: 10.14457/cu.the.2015.218
title: Numerical simulation for fatigue crack propagation in steel beams with welded transverse stiffeners

description: The purposes of this study are to numerically simulate the 3D in-plane fatigue crack propagation in steel I-girders with welded transverse stiffeners and to predict the fatigue life of steel beams with different initial crack sizes and girder geometries, such as web-gap lengths and transverse stiffener dimensions. The FRANC3D software was used to perform calculation using the finite element analysis. Many cases were conducted and the results indicated that the propagation of very small crack required very high number of load cycles and the initial crack with smaller web-gap length had a higher value of stress intensity factor which shortened the fatigue life, whereas the thinner transverse stiffener had a tendency to decrease the fatigue life of steel I-beams.
DOI: 10.14457/cu.the.2015.219
title: Enhanced condensate recovery via gas dumpflood from multiple high CO2 gas reservoirs

description: In the Gulf of Thailand, many gas fields are multi-stack gas condensate and dry gas reservoirs. Some of these dry gas reservoirs are not economically produced because of high CO2 content. However, these reservoirs can be used to perform gas dumpflood into a gas-condensate reservoir instead of gas injection to enhance condensate recovery due to much lower cost. In this study, a hypothetical reservoir model consisting of a gas-condensate reservoir with four thin-layered high CO2 gas reservoirs having typical properties found in the Gulf of Thailand was created using compositional reservoir simulation software in order to investigate the performance of the proposed method. This simulation study found that gas dumpflood can increase condensate recovery up to 17.5% over natural depletion scenario depending on several parameters. Although its recovery is lower than that of conventional gas injection, gas dumpflood is an attractive alternative due to lower cost. The important parameter is the fluid composition in the gas condensate reservoir. The rich gas condensate yielding higher condensate to gas ratio is more favorable for gas dumpflood from high CO2 source gas reservoir. On the contrary, for lean condensate, excessive amount of dumped source gas results in a large reduction of condensate recovery. The amount of CO2 should be limited in this case. Regarding perforation of the high CO2 source gas reservoirs, different sequences result in similar gas and condensate recovery as long as the same amount of total original gas in place is present in those perforated layers.
DOI: 10.14457/cu.the.2015.220
title: Catalytic wet air oxidation of wastewater from acid removal system

description: In this study, wet air oxidation of spent caustic waste water, generated from acid removal unit, was used for this study. The rate of reaction in oxidation was enhanced by catalyst. First, the kinetic model of non-catalytic wet air oxidation was investigated. From the reaction, the kinetic model was function of concentration of sodium sulfide, which is a main pollutant, at order of 2.10 and was function of oxygen at order of 0.87. The activation energy was 16.24 kJ/mol. Then, metals such as copper, manganese, ruthenium or vanadium on silica, alumina, ceria or titania were used as catalysts for determining the oxidation activity in the waste water. The weights of metal loading were based on the same cost of metals. From the reaction, copper metal on titania support was the most active catalyst among the others catalysts. After that, kinetic model of catalytic wet air oxidation was investigated. From the reaction, the kinetic model was function of concentration of sodium sulfide at order of 1.50 and was function of oxygen at order of 1.13. The activation energy in case of catalytic wet air oxidation was decreased to 11.09 kJ/mol. Finally, feasibility of the project was studied. Catalytic wet air oxidation can reduced the investment cost from 1,117,400 baht to 53,744 baht. However, more detail to determine life time of the copper on titania catalyst should be considered.
DOI: 10.14457/cu.the.2015.221
title: Laboratory investigation on stress-strain behaviour of cement-treated expansive soils

description: This dissertation investigates an influence of non-swelling clay and cement contents on geotechnical properties of swelling soils. The Bangkok clay and bentonite were used as the non-swelling and swelling clays in this study. The swelling and non-swelling clays were mixed at different proportions. The 40:60 and 20:80 mixture clays were selected to be treated with 5% and 10% cement. It was found that engineering properties of expansive soils undergo favourable changes when mixed with a modest dose (20-40%) of non-swelling clays. However, a relatively large increase of non-swelling clay content is necessary to obtain markedly larger strength, stiffness, and CBR value, as well as reduce the shrink-swell properties. Correlations established among the untreated soil properties were tested against data from some previous study and found to be applicable satisfactory in most cases. On the other hand, while cement added to the mixture clays, the strength and stiffness of soils markedly increase along with a positively reduce of shrink-swell properties. In this study, a modified oedometer apparatus was developed to measure the vertical and lateral pressures, and then the lateral coefficient of swelling pressure can be defined. By adding cement to the swelling soils, the coefficient was markedly increased. It seems that the cement will affect to reduce swelling potential more in vertical direction. Hence, in the design of retaining structure on expansive soils, the engineer should aware the lateral coefficient of swelling pressure and the reduction of the lateral swelling pressure by considering the very rapid decrease of the vertical stress of cement-treated soils while compare that to untreated soils.
DOI: 10.14457/cu.the.2015.222
title: Interfacial tension measurement on light oil from Fang oilfield with alkaline solution

description: Alkaline flooding is one of the chemical process which help to improve the oil recovery by reducing the interfacial tension between oil and aqueous alkaline solution. In this research, the interfacial tension measurement of oil from Fang oilfield would be studied with various parameters such as pressure, temperature, alkaline types, alkaline concentration, salinity concentration and divalent ion. From the results, the effects of each parameter are different on the interfacial tension. When the pressure changes, the interfacial tension tend to be constant due to the experimental system are liquid phase. The effects of alkaline types on the interfacial tension are presented that the strong base alkaline solution can reduce the interfacial tension greater than the weak base alkaline solution at the same concentration because the dissociation of the strong base can completely occur compared to weak base. Therefore, the strong base alkaline can from the in-situ surfactant higher than the weak base alkaline. The strong base alkaline can reduce the interfacial tension down to 0.2 dynes/cm while the weak base alkaline can reduce the interfacial tension down to 0.6 dynes/cm. Temperature is also one of the parameters that affect the interfacial tension in the opposite direction. The increment of temperature would reduce the interfacial tension. Alkaline concentration and salinity affect the interfacial tension in the same direction. The increment of these two parameters would reduce the interfacial tension. The divalent ion has small effect on the interfacial tension.
DOI: 10.14457/cu.the.2015.223
title: Finite element modeling of punching shear behavior of ultra high performance fiber reinforced concrete slabs considering effect of fiber orientation

description: The present study represents a numerical study on the punching shear behavior of ultra-high performance steel fiber reinforced concrete (UHPFRC) slabs without shear reinforcement, particularly considering the effect of fiber orientation, validated by experimental results. In recent decades, ultra-high performance steel fiber reinforced concrete (UHPFRC) has been a new achievement in concrete technology. Due to its superior mechanical properties, civil engineers can address the problem of punching shear of thin slabs that are currently widely used in buildings. By processing some studies, researchers have found that the strength capacity of the material before cracking and the post-cracking resistance strongly depend on the orientation of the fibers, which heavily rely on the casting direction and casting method. While most of previous studies focused on the effect on the behavior of beams, the present research particularly considers how the casting procedures as well as the volume content of the fiber affect the punching shear behavior of flat slabs.Based on models from the previous research and this research’s experimental results, constitutive model of material was proposed to capture the effects of fiber orientation. Different parts of the slab according to different distances from casting positions produce different fiber orientations, and lead to different material models, particularly tensile constitutive models. The material models were applied to finite element analysis in ABAQUS/Explicit, using Concrete Damage Plasticity model to simulate the punching shear behavior of the flat slabs. The appropriation of proposed material models and finite element modeling procedure were validated by comparing to experimental results. Consequently, these models can be used further to consider the effect of fiber orientation in future researches and utilizations of UHPFRC structures.
DOI: 10.6084/m9.figshare.13185410.v3
title: CNRDv1.0: the China natural runoff dataset version 1.0

description: The quality-controlled gridded naturalized runoff dataset, the China natural runoff dataset version 1.0 (CNRD v1.0), is reconstructed by using a comprehensive model parameter uncertainty analysis framework within a land-surface model. CNRD v1.0 provides daily, monthly and annual 0.25° runoff estimates for the period 1961–2018 over China. CNRD v1.0 was generated using the Variable Infiltration Capacity model with a comprehensive parameter uncertainty analysis framework incorporating parameter sensitivity analysis, optimization and regionalization based on 200 natural or near-natural gauge catchments.<br>Global attributes:<br><br>Variables = Total runoff (qtot)<br>Data Types = Histrorical reconstruction<br>Date format = NetCDF4Temporal Range = 1961-01-01 to 2018-12-31<br>Spatial extent = 18.6250° N ~53.6250° N, 73.375° E ~135.1250° EUnits = mmMissing value = -9999<br>_FillValue = -9999<br>Note: We are updating the annual and monthly records during the period 2001-2018, and will upload them soon. <br><br>Publications:<br><br>1. Gou, J. J., Miao, C. Y., Duan, Q. Y., Tang, Q. H., Di, Z. H., Liao, W. H., Wu, J. W., & Zhou, R. (2020). Sensitivity analysis-based automatic parameter calibration of the VIC model for streamflow simulations over China. Water Resources Research, 56: 1-19. https://doi.org/10.1029/2019wr025968;<br>2. Gou, J. J., Miao, C. Y., Samaniego, L., Xiao, M., Wu, J. W. & Guo, X. Y. (2020). CNRD v1.0: a high-quality natural runoff dataset for hydrological and climate studies in China. Bulletin of the American Meteorological Society (Accepted). https://doi.org/10.1175/BAMS-D-20-0094.1. <br>
DOI: 10.6084/m9.figshare.13185410.v4
title: CNRDv1.0: the China natural runoff dataset version 1.0

description: The quality-controlled gridded naturalized runoff dataset, the China natural runoff dataset version 1.0 (CNRD v1.0), is reconstructed by using a comprehensive model parameter uncertainty analysis framework within a land-surface model. CNRD v1.0 provides daily, monthly and annual 0.25° runoff estimates for the period 1961–2018 over China. CNRD v1.0 was generated using the Variable Infiltration Capacity model with a comprehensive parameter uncertainty analysis framework incorporating parameter sensitivity analysis, optimization and regionalization based on 200 natural or near-natural gauge catchments.<br>Global attributes:<br><br>Variables = Total runoff (qtot)<br>Data Types = Histrorical reconstruction<br>Date format = NetCDF4Temporal Range = 1961-01-01 to 2018-12-31<br>Spatial extent = 18.6250° N ~53.6250° N, 73.375° E ~135.1250° EUnits = mmMissing value = -9999<br>_FillValue = -9999<br>Note: We are updating the annual and monthly records during the period 2001-2018, and will upload them soon. <br><br>Publications:<br><br>1. Gou, J. J., Miao, C. Y., Duan, Q. Y., Tang, Q. H., Di, Z. H., Liao, W. H., Wu, J. W., & Zhou, R. (2020). Sensitivity analysis-based automatic parameter calibration of the VIC model for streamflow simulations over China. Water Resources Research, 56: 1-19. https://doi.org/10.1029/2019wr025968;<br>2. Gou, J. J., Miao, C. Y., Samaniego, L., Xiao, M., Wu, J. W. & Guo, X. Y. (2020). CNRD v1.0: a high-quality natural runoff dataset for hydrological and climate studies in China. Bulletin of the American Meteorological Society (Accepted). https://doi.org/10.1175/BAMS-D-20-0094.1. <br>
DOI: 10.5439/1578281
title: xsacrgridrhi.c0

description: Cartesian Cloud Cover Gridding Product for X-Band Scanning ARM Cloud Radar, RHI scan mode at CACTI, MOSAIC, COMBLE, etc.
DOI: 10.6084/m9.figshare.13621169.v5
title: Speedtest Open Data - Four International cities - MEL, BKK, SHG, LAX

description: This dataset compares four cities broadband internet speeds:- Melbourne, AU- Bangkok, TH- Shanghai, CN- Los Angeles, US<br>ERRATA:Data is for Q3 2020, but some files are labelled incorrectly as 02-20 of June 20. They all should read Sept 20, or 09-20 as Q3 20, rather than Q2. Will rename and reload.<br>*lines of data for each geojson file; a line equates to a 600m^2 location, inc total tests, devices used, and average upload and download speed- MEL 16181 lines- SHG 31745 lines- BKK 29296 lines<br>Geojsons of these 2* by 2* extracts for MEL, BKK, SHG now added, and LAX will be added shortly.<br>This dataset unpacks, geospatially, data summaries provided in Speedtest Global Index (linked below). See Jupyter Notebook (*.ipynb) to interrogate geo data. See link to install Jupyter.<br>** To DoWill add Google Map versions so everyone can see without installing Jupyter.- Link to Google Map (BKK) added below. Key:Green &gt; 100Mbps(Superfast). Black &gt; 500Mbps (Ultrafast). CSV provided. Code in Speedtestv1.1.ipynb Jupyter Notebook.<br>** Pythonmelb = au_tiles.cx[144:146 , -39:-37] #Lat/Lon extract<br>shg = tiles.cx[120:122 , 30:32] #Lat/Lon extract<br>bkk = tiles.cx[100:102 , 13:15] #Lat/Lon extract<br>- LAX yet to add<br>Histograms, and data visualisations will be provided.Data Sourced from - This is an extract of Speedtest Open data available at Amazon WS (link below - opendata.aws).<br>**VERSIONSv5 Add screenshot of BKK Google Map.v4 Add BKK Google map(link below), and BKK csv mapping files. v3 replaced MEL map with big key version. Prev key was very tiny in top right corner.v2 Uploaded MEL, SHG, BKK data and Jupyter Notebookv1 Metadata record<br>** LICENCEAWS data licence on Speedtest data is "CC BY-NC-SA 4.0", so use of this data must be:- non-commercial (NC)- reuse must be share-alike (SA)(add same licence).This restricts the standard CC-BY Figshare licence.<br>
DOI: 10.5281/zenodo.4419951
title: Assemblies evaluated in the wtdbg2 paper

description: Assemblies evaluated in the wtdbg2 paper
description: {"references": ["Ruan J, Li H (2020) Fast and accurate long-read assembly with wtdbg2. Nat Methods, 17:155-158."]}
DOI: 10.5281/zenodo.4419950
title: Assemblies evaluated in the wtdbg2 paper

description: Assemblies evaluated in the wtdbg2 paper
description: {"references": ["Ruan J, Li H (2020) Fast and accurate long-read assembly with wtdbg2. Nat Methods, 17:155-158."]}
DOI: 10.6084/m9.figshare.13634247
title: Additional file 2 of Seasonal shifts in the gut microbiome indicate plastic responses to diet in wild geladas

description: Additional file 1: Table S1. Taxonomic composition of the gelada gut at the phylum, class, order, family and genus levels. The mean relative abundance and prevalence (% of the samples with each taxon) of bacterial taxa are indicated. Table S2. Taxonomic composition of the core ASVs (i.e. present in at least 90% of samples) in the gelada gut at the order level. Table S3. Summary of the most similar bacterial sequences to the 78 ASVs belonging to the RFP12 family found in geladas feces. For each gelada RFP12 ASV, we searched the most similar nucleotide sequences found previously on NCBI BLAST, extracted its top five hits (i.e. most similar sequences based on Evalue) and summarized the distribution of those top hits across the 78 ASVs (identifying those animals in which similar sequences were found). Table S4. Predictors of observed richness and Faith’s phylogenetic diversity (PD). Estimates with p-values &lt;0.05 are highlighted in bold. Table S5. Loading scores of ASVs on the first principal component. Positive loadings correspond to wetter periods, while negative loadings correspond to drier periods. Table S6. Taxonomic distribution of seasonally differentially abundant taxa. Only taxa with a PC loading scores &gt; 0.4 and
DOI: 10.6084/m9.figshare.13634335.v1
title: Additional file 1 of Four cellulose-active lytic polysaccharide monooxygenases from Cellulomonas species

description: Additional file 1: Multiple sequence alignment of LPMOs.
DOI: 10.6084/m9.figshare.13634338.v1
title: Additional file 2 of Four cellulose-active lytic polysaccharide monooxygenases from Cellulomonas species

description: Additional file 2: Maximum-likelihood phylogenetic tree in Newick format.
DOI: 10.6084/m9.figshare.13634338
title: Additional file 2 of Four cellulose-active lytic polysaccharide monooxygenases from Cellulomonas species

description: Additional file 2: Maximum-likelihood phylogenetic tree in Newick format.
DOI: 10.6084/m9.figshare.13634335
title: Additional file 1 of Four cellulose-active lytic polysaccharide monooxygenases from Cellulomonas species

description: Additional file 1: Multiple sequence alignment of LPMOs.