cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.14457/cu.the.2017.217
title: Metal artifact reduction in computed tomography at head and neck region

description: The common streak artifacts in computed tomographic images result from the metal implant in patients. Such the artifacts could suppress proper diagnosis or misdiagnosis in computed tomographic images. The purpose of this study is to develop the method for metal artifact reduction using MATLAB software and implement in both phantom and patients for head and neck computed tomographic imaging. The new algorithm of metal artifact reduction in computed tomographic images had been developed using MATLAB software. The homogeneous phantom, Alderson Rando phantom, and patients with a metal implant in the head and neck region had been scanned by Philips Brilliance Big Bore CT. Commercial Orthopedic metal artifact reduction (OMAR) and new algorithms were applied to the computed tomographic images in phantoms and patients with the metal artifact in the head and neck region. The quantitative analysis of image quality on a metal artifact of the head and neck region was evaluated in percent noise. The qualitative analysis in clinical imaging was evaluated in scoring by two radiation oncologists. In homogeneous and Alderson Rando phantoms, the new algorithm indicated higher efficiency in metal artifact reduction than OMAR. In contrast, for the head and neck computed tomographic image with metal artifact reduction, OMAR showed higher efficiency than the new algorithm. The new algorithm suppressed the artifact in homogeneous, anthropomorphic phantom and patients with a metal implant in the head and neck region approximate 40%, 40%, and 60%, respectively. The new algorithm of metal artifact reduction based on non-linear interpolation technique to suppress the metal artifact in computed tomographic images, use the unique technique to improve the image quality. The qualitative analysis by two radiation oncologists showed the comparable results of OMAR and new algorithm. The efficiency of the new algorithm is better than filtered back projection and metal artifact reduction for OMAR in homogeneous phantom and Alderson Rando phantom in the clinical range of the tube current-time, mAs. However, the efficiency of metal artifact reduction for OMAR is higher than a new algorithm and filtered back projection regarding percent noise. The image quality scoring by two independent radiation oncologists with the same experience showed comparable efficiency result of the new algorithm and OMAR.
DOI: 10.13145/bacdive124133.20191129.4.1
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/bacdive124134.20191129.4.1
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.2017.218
title: Development of starch-nanocellulose composites for using in surface treatment of paper

description: The main role of surface sizing is to increase the surface strength of paper. Starch is commonly used as surface sizing agents, but there are still some limitations. In this study, nano-bacterial cellulose (NBC) produced by Acetobacto xylinum was used as a reinforcing material in starch-based composites. The suspensions of NBC starch-based composites were prepared by the additions of 0.10-10.00% w/w NBC into starch solution and were used as surface sizing agents. The structures and properties of NBC starch-based composite films were characterized by FTIR, XRD, and SEM. The mechanical properties and barrier properties of cellulosic paper with surface sizing by the NBC reinforced starch-based composite suspensions were investigated. With the addition of NBC at 1.00%, the mechanical properties in terms of burst index, tensile index, and folding endurance were increased by 10%, 10%, and 44%, respectively. Furthermore, the air resistance of surface sized paper was significantly improved by 56%, as compared to the surface sized paper without NBC addition. According to the results of mechanical properties and air resistance, it was suggested that the optimal NBC dosage in starch-based composite was 1.00%.
DOI: 10.13145/bacdive124135.20191129.4.1
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.2017.219
title: Effect of Palm Fatty Acid Distillate on Hydrodesulfurization and Hydrodeoxygenation in Co-processing with Petroleum Gas Oil in Hydrotreating Unit

description: Deoxygenation of palm fatty acid distillate (PFAD) to produce renewable diesel had been experimented in co-processing with petroleum light gas oil (LGO) in a pilot-scale reactor. The reaction was achieved in the fixed-bed hydrotreating reactor, over commercial CoMo/Al2O3 under 280–350 oC, 25 barg, H2/feed of 630 Nm3/m3 and 0.75 h-1 of LHSV. High conversion were achieved when varied PFAD up to 25 wt%. The presence of PFAD in LGO improved cetane index of the liquid products. Heat effect due to overall exothermic reactions was observed. Hydrogen consumption was then theoretically calculated and extrapolated for hydrotreating of pure PFAD. Further study by laboratory scale reactor with model component was to study the effects of PFAD on actvities over prolonging time at the similar conditions and catalyst by using palmitic acid, and model LGO. The presence of 4,6-DMDBT resulted in high deoxygenation conversions, while the palmitic acid decreased the desulfurization activity as a reversible effect. The modification of the reactor depicted the polymerization of unsaturated feed at heating section. Additional pretreatment by double-bond hydrogenation was benefited to both activities since the major cause of the deactivation was from the polymerized product that blocked the catalyst pore and lowered activity. The deactivated catalyst could be efficiently reactivated by 2 wt% of dimethyl-disulfide (DMDS) in n-C18 at 320 oC. These results could be valuable as foreseeing information to an improvement of an existing hydrotreating unit for co-processing PFAD with LGO.
DOI: 10.13145/bacdive124136.20191129.4.1
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/bacdive124137.20191129.4.1
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.2017.220
title: DESIGN AND CONTROL OF A 2-DOF REHABILITATION ROBOT WITH A TASK DEFINED IN A VIRTUAL ENVIRONMENT.

description: This research proposes a novel upper-limb rehabilitation robotic system. Instead of an exoskeleton type, the proposed robot is designed as active 2-DOF end-effector type moving in a horizontal plane, with being compact and easy to use with the harmless image. The rehabilitation robot system consists of a robot, a controller system and a virtual environment (game). The proposed rehabilitation robot system has been evaluated with 2 healthy subjects. The robot system has been evaluated in passive, active non-assist and active intent-based assistive rehabilitation type.
DOI: 10.13145/bacdive124138.20191129.4.1
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/bacdive124139.20191129.4.1
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.2017.221
title: CONTACT PROBLEMS WITH SURFACE STRESS EFFECTS

description: This dissertation presents a theoretical study of contact problems with consideration of surface energy effects by adopting a complete Gurtin-Murdoch theory of surface elasticity. The fundamental solution of a layered elastic half-space subjected to axisymmetric surface loading is obtained by using Love’s representation and the Hankel integral transform. The analytical solutions for both displacement and stress fields are expressed in terms of semi-infinite integrals, which can be accurately evaluated by employing a numerical quadrature scheme. The obtained solutions are employed as the required influence functions in the investigation of axisymmetric indentation on a layered elastic medium with frictionless and adhesive contacts. In addition, they are also employed in the analysis of an elastic circular nanoplate under axisymmetric vertical loading resting on an elastic half-space based on a variational formulation. The accuracy of the present solution scheme is confirmed by comparison with relevant existing solutions, and selected numerical results on elastic fields under various contact problems are also presented. It is found that the surface stresses have a significant influence on both displacement and stress fields in the elastic medium especially in the vicinity of the surface. An extensive parametric study confirms that, unlike the classical elasticity solution, the material becomes stiffer and size-dependent with the presence of surface stresses. The present solution can be used as a benchmark solution in the development of numerical techniques such as the finite element and boundary element methods for analysis of more complicated contact problems under the influence of surface energy effects such as nanoscale problems and soft elastic solids.
DOI: 10.13145/bacdive124140.20191129.4.1
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.2017.222
title: OPTIMUM PATCH DESIGN FOR REPAIRING CRACKED STEEL PLATES USING GENETIC ALGORITHM

description: This research presents a design optimization process that combines the finite element (FE) method, genetic programming (GP), and optimization solvers, i.e., genetic algorithm (GA) and nonlinear programming, for double-sided fiber-reinforced polymer (FRP) patches used to repair center-cracked steel plates under tension fatigue. An optimization statement is to minimize the patch volume and reduce the stress intensity factor (SIF) range at crack tips below the fatigue threshold range. A detailed three-dimensional (3D) FE model of patch-repaired cracked plates is developed to compute SIF. A total of 864 FE models of patch-repaired cracked plates with different combinations of design parameters are then analyzed to obtain a SIF database. Based on the database, a symbolic regression via GP analysis is implemented to develop a closed-form SIF solution that helps visualize the effects of design parameters on SIF, facilitates the repair design, and is used as an inequality constraint in the optimization. Finally, optimization solvers are employed to find an optimum solution (patch length, width, and thickness) that is then checked for patch rupture and debonding failure based on some failure criteria. An example is given to illustrate the design process. The example results reveal that the optimum patch design is significantly influenced by patch modulus, meanwhile, the effect of adhesive modulus is not pronounced. Furthermore, in view of debonding failure, the maximum Tresca and interfacial stresses significantly increase when adhesive modulus increases. As both stresses are relatively insensitive to patch modulus, the use of high modulus patch and low modulus adhesive is recommended for fatigue crack repairs. For large cracks, using a thick and high elastic modulus patch is the most effective.
DOI: 10.13145/bacdive124141.20191129.4.1
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/bacdive124142.20191129.4.1
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.2017.223
title: Random field optimization using local label hierarchy

description: Random field formulation has proven to be a powerful framework for solving various computer vision tasks, specifically those involving assigning labels to image pixels or superpixels subjected to spatial relationships and visual contexts, due to the ability to intuitively incorporate global and local information. Unfortunately, solving these problems can be impractical when large number of variables and possible labels are present as the computational complexity grows fast with the problem size. In this thesis, we propose a speedup scheme for random field optimization using local label hierarchy. We focus on problems in which the label space has a natural ordering structure that represents physical quantity and exploit characteristics of the underlying labeling problems to obtain a hierarchical energy minimization technique. This has enabled us to circumvent exhaustive search of label space and, therefore, achieve better performance in terms of running time. We give definitions and notations for local label hierarchy as well as present approaches for label-wise grouping, namely, local minimum search, cluster analysis, and maximum-difference subdivision. We also generalize the definition of energy function to include sets of labels as the domain and present heuristics for assigning group potentials. The added processing steps have significantly less theoretical computational complexity than the overall process. Our methodology was tested with a number of computer vision problems with structured label spaces. The experimental results have shown that our proposed scheme can provide up to an order of magnitude speedup of the computation time while providing comparable energy.
DOI: 10.13145/bacdive124143.20191129.4.1
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.2017.224
title: Efficient and robust grasp planning based on independent contact region and caging

description: A conventional way to find a proper grasp to grab and hold any object is to measure its stability which usually is based on physical constraint called force-closure. This execution works well from the theoretical point of view but often fails on an actual robot due to many reasons such as intrinsic errors in robot’s system and a disparity between real and simulated physics. Several research works introduced methods to alleviate those issues and increase the success rate of grasping for a real robot. Caging and Independent Contact Region are ones of them. In this work, we investigate a method to find a grasp that is more stable and robust by combining those two techniques which result in a learning-based approach that utilizes an artificial neural network to find a proper grasp based on those techniques and some heuristic methods.
DOI: 10.13145/bacdive124144.20191129.4.1
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/bacdive124145.20191129.4.1
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.2017.225
title: Development of technique for screening liquids in unopened bottle using low energy x-ray transmission

description: Since August 2006 after the discovery of terrorists’ attempts to explode airplanes with liquid explosives in United Kingdom, each airline passenger is allowed to carry only a maximum of 100 ml liquid in each container and a total of not more than 1,000 ml in carry-on luggage. This measure was adopted to prevent bringing sufficient amount of fuel oil, alcohol, hydrogen peroxide or other flammable and explosive liquids into the aircraft. In this research, X-ray transmission technique was experimentally investigated using low energy X-rays between 13.6 – 43.5 keV emitted from 238Pu radioisotopic source and linear attenuation coefficient of liquids were calculated. The results indicated that the technique could clearly distinguish water, alcohol and fuel oil while its sensitivity is dependent upon radiation energy and diameter of the bottle. Other kinds of liquid are also tested. For bottles or containers having various diameters, multi-energy X-rays may be more practical. This technique is possible to employ the technique for screening bottled liquids contained in unopened bottles at airports.
DOI: 10.13145/bacdive124146.20191129.4.1
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/bacdive124147.20191129.4.1
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.2017.226
title: The effect of adsorption on photocatalytic degradation of phenyl urea herbicides on zinc oxide

description: The effect of adsorption on photocatalytic degradation was studied by using zinc oxide with different morphologies and exposed surfaces as the photocatalyst. Polar zinc-terminated surface and polar oxygen-terminated surface are dominating planes on the top and bottom of a crystal of ZnO conventional particles, while non-polar surface is the main plane on the side of ZnO nanorods. These surfaces affect the adsorption behavior of phenylurea herbicides, i.e. diuron, linuron and 3,4-dichloroaniline. Consequently, they cause the difference in photocatalytic degradation rate and intermediate products formed during the degradation. The adsorption capacity of ZnO conventional particles is about twice as high as that of ZnO nanorods although the surfaces area of the ZnO conventional particles is one order of magnitude less than that of ZnO nanorods because of the greater amount of adsorption sites and affinity of the polar surfaces. However, the extents of the photocatalytic degradation achieved by two forms of ZnO are insignificantly different. In addition, the adsorption configuration of the herbicides on the surface of ZnO also affects the performance in degradation. The intermediates detected even at the shortest residence time investigated depend on the adsorption behavior of the herbicides. The attack of hydroxyl radicals occur on adsorbed position. Therefore, the different alignment on the surface results in variation in intermediates. The toxicity of intermediates were assessed and were found that intermediates produced on ZnO nanorods is less toxic than that on ZnO powder.
DOI: 10.13145/bacdive124148.20191129.4.1
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/bacdive124149.20191129.4.1
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.2017.227
title: Functionalization of carbon nanohorns and their catalysis applications

description: Carbon nanohorns (CNHs) synthesized by gas-injected arc-in-water method were functionalized in this study. Metal (Ni, Cu, Fe, Pd, and Pt) and their alloy (NiCu, NiFe, NiPd, and NiPt) hybridized with CNHs were successfully produced. In addition, thermal and acid treatment was applied on the hybridized materials. Effect of metal loading and functionalizing conditions on characteristics of CNHs and functionalized CNHs was examined based on transmission electron microscope (TEM), energy-dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD), N2 sorption, Raman spectroscopy, Fourier transform infrared (FT-IR) spectrometer, temperature programmed desorption of ammonia (NH3-TPD) analysis. The functionalized CNHs were applied as a catalyst in 3 difference reactions, namely dehydration of xylose to furfural, esterification of levulinic acid to ethyl levulinate, and transfer hydrogenation of methyl levulinate to γ-valerolactone. Performance and stability of the catalyst was investigated. Moreover, role of the catalyst in each reaction were also discussed.
DOI: 10.13145/bacdive124150.20191129.4.1
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.2017.228
title: Development of data acquisition technique for computed tomography of simplified distillation column model as used in petroleum and petrochemical plants

description: This dissertation propose the development of data acquisition technique for computed tomography of simplified distillation column model as used in petroleum and petrochemical industries. The aim of this dissertation is to apply the computed tomography technique to inspect the internal structure of distillation column regardless of complex system to move radiation detectors and source. The developed data acquisition technique allows the operator to move radiation detectors and radiation source by follow designed algorithm. The scanning data are reconstructed using filtered back projection algorithm to evaluate internal structure at the region of interest from cross sectional reconstructed image. In this dissertation, simulation using MCNP was assisted in order to obtain the transmitted gamma radiation profiles through different size pipe objects and use them as prior knowledge information. Three data acquisition techniques were designed afterward using same diameter and thickness of pipes which lead to results that all three data acquisition techniques had similar results which maximum error less than 15% when measuring the pipe diameter. However, the reconstructed image could not display a thickness of pipe objects. Moreover, the designed data acquisition algorithms were extended to other experiments which successfully provided consistency results compared to the real situation in model. This developed data acquisition technique is useful and can be applied to scanning of large object in industries..
DOI: 10.13145/bacdive124151.20191129.4.1
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/bacdive124152.20191129.4.1
title: Streptomyces sp.

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