Summary of Doctoral thesis in Engineering

Building models, setting up dynamic equations, vibration equations of vertical band saw blades, surveying dynamic equations, determining some optimal parameters of vertical band saws in automatic sawing lines, to improve productivity and product quality.

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Purpose research: Research theoretical basis and practical basis of teaching technical skills (TTS) towards developing collaborative working skills (CWS) for pedagogical students; thereby proposing measures to teach the practicetechnical towards developing CWS for pedagogical students, in order to improving the quality of teaching in colleges and universities of education with technical training in this time.

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Research aims: The research aims at researching and developing theoretical and practical basis for control theory-based teaching. On that basis, the research builds up the process of control theory-based teaching and apply it to teaching PLC modules for engineering majored college students.

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Objectives of the thesis: The objective of this study is to develop an energy and nutrients recovering wastewater treatment process combining physicochemical and biological methods for NRP wastewater.

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Thesis objectives and tasks: Develop a strategy for the DSM program to operate the PVG and WG exploitation system in EPS Vietnam; develop the concept maps to meet the requirements of the DSM program.

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The research objectives of the thesis: Research to isolate, determine chemical structure and probe the biological activity of chemical components in apple and Docynia indica fruits; Research to optimize the extraction technology process to create products from Docynia indica fruits

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The research goals of the thesis: Preparation and characterization of activated carbon products denaturated by surface oxidation technics. Determination of cation exchange capacity of the materials. Investigation of Mn and Fe linking on surface of prepared materials to form a new adsorption material for effective removing hazard anions in water environment.

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Aim of the thesis: Development of a new method for determining concentration of the radionuclides in enviromental samples by mean of gamma spectroscopy. Establishing a data set of the soil-plant transfer factor (TF) of radionuclides 238U, 232Th and 40K for some vegetables in Truong Sa island and that of 238U, 232Th, 40K and 137Cs for tea tree from Luong My farm, Hoa Binh province, Vietnam and evaluate the influence of natural radionuclide concentration to the soil-plant transfer process of artificial radionuclide 137Cs.

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The research objectives of the thesi: Manufacturing biochar (BC) and activated carbon from coffee husk; Fabrication of biochar/activated carbon composite materials from coffee husk and MnFe2O4 nanomaterials to treat Cr(VI) and Ni(II) ions in water. Clarifying adsorption mechanism and heavy metal ion adsorption model on VLHP from coffee husk.

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Research purposes: Developing problem-solving skills for students in teaching about Thermal Science of General Physics at Military Technical Officers; Research Subjects: Students' problem-solving skills in studying Physics. Teaching process of General Physics.

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The aim and content of research: Establishing scientific basis and method of analyzing the law of sound velocity change in seawater in the Gulf of Tonkin region of Vietnam to complete the process of sampling sound velocity to effectively exploit hydroacoustics equipment.

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Equivalent inclusion approach is then developed to account for possible diversions, such as non-idealistic geometric forms of the inhomogeneities, imperfect matrix-inclusion contacts, filler dispersions, and when the particular values of the fillers’ properties are unspecified, using available numerical or experimental reference conductivity data for particular composites.

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Thesis objectives and tasks: Develop a strategy for the DSM program to operate the PVG and WG exploitation system in EPS Vietnam; develop the concept maps to meet the requirements of the DSM program.

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The main objective of the thesis is to provide general methods to control oscillation based on measurement of energy flow, namely: Find the optimal solution for passive control systems based on energy flows; propose the semi-active control algorithms to control the energy flow.

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Summary of Environmental engineering doctoral thesis: Investigation of activated carbon denaturation in order to create material for treatment of several hazard ions in water environment

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Research to isolate, determine chemical structure and probe the biological activity of chemical components in apple and Docynia indica fruits; Research to optimize the extraction technology process to create products from Docynia indica fruits.

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The thesis researches and builds an entity search technique based on implicit semantic relations using clustering methods to improve search efficiency. Apply context-aware techniques, build an vertical search engine that applies context-aware in its own knowledge base domain (aviation data). Propose to measure combinatorial similarity in the contextual query suggestion problem to improve the quality of suggestion.

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The content of the thesis includes 5 programs presenting research overview and theoretical basis of factors affecting the quality of accounting information system; research methods, research results and discussion of research results and recommendations.

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This thesis focuses on simulating the internal circulation process (gas pulling water) to determine: The amount of water (QN) was pulled up by the amount of gas (QK); and mixing ability of generated gas and circulating water flow, from which to calculate the periodic structure in the IC system.

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Successfully synthesized nano – mixed oxide by different gelling agents; compared, selected the appropriate gelling agent; researched to evaluate the catalytic activity of mixed oxide nanoparticles formed with pollutants methyl orange (MO), methylene blue (MB). Successful dispersed mixed oxide nanoparticles on rGO; investigated catalytic activity of material systems on parathion, fenitrothion.

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