Structure characterization

This study involved the deposition of NiO thin films onto Al2O3/glass substrates using RFmagnetron reactive sputtering. Then, the influence of heating temperatures on crystal structure, surface morphology, transmittance, and optical band gap of NiO films was investigated via different characterization techniques.

8p tuetuebinhan000 23-01-2025 0 0   Download

Hemoglobinopathy is the most common monogenic disease worldwide. The aims of the current study were: (1) to investigate some hematological characteristics of patients with hemoglobinopathies; and (2) to detect the mutation of α-globin and β-globin genes, as well as the association between genotype and degree of anemia.

8p viharuno 03-01-2025 4 1   Download

In this chapter, the following content will be discussed: System model, deadlock characterization, methods for handling deadlocks, deadlock prevention, deadlock avoidance, deadlock detection, recovery from deadlock.

45p dien_vi02 07-10-2018 37 0   Download

To achieve the aim, the first objective is preliminary experiments on preparation of polypropylene blends with silicone elastomer masterbatch and characterize by analysis of mass composition, mechanical properties, and dynamic mechanical properties to investigate any improvement of properties. The silicone elastomer masterbatch will then be substituted with propylene-maleic anhydride graft copolymer waxes or other compatibilizers.

147p runthenight05 01-03-2023 8 3   Download

The focus of this study is to investigate its optical and conductive properties under different conditions of doping environments, temperature and polymerization conditions. Optical characterization technique such as UV-Visible spectroscopy is developed to carry out the investigation. The developed nanofibers have been demonstrated to possess optical and conductive properties to be dependent on doping variables. Study of these optical properties could prove very useful in the development of electrochromic devices and gas sensors.

103p runthenight07 01-03-2023 8 3   Download

The objectives of this research work are: Study the clay intercalation by organic dye and develop a process to produce nanoclay-dye pigment with better stability and good performance; Conduct structural characterization to verify the level of intercalation and stability of clay-dye pigment by using X-Ray diffraction (XRD) and Transmission Electron Microscopy (TEM); Investigate the thermal stability of clay dye pigment using Thermo Gravimetric Analysis (TGA) to reveal the effect of dye intercalation into the clay on improving thermal stability of organic dye; Compound the clay- pigment with ...

141p runthenight07 01-03-2023 6 3   Download

The goal of the thesis: Determine the time of harvesting the natural growing Dangshen roots; research on inulin extraction, purification, and characterization of inulin molecular structure in Dangshen tubers naturally growing in Lac Duong district, Lam Dong province; research on spray drying to create Dangshen powder and experiment to create a synbiotic powder from spray-drying powder, oriented application in food.

33p guitaracoustic09 14-01-2022 32 1   Download

The thesis consists of 135 pages, including 21 tables of data, 50 figures and 144 references. The structure of the thesis consists of: Introduction: 4 pages; Overview: 32 pages; Experimental part: 13 pages; Results and discussion: 63 pages; Recent contributions of the thesis: 1 page; The list of published works: 2 pages; References: 18 pages. There is also an appendix containing the spectrums and diagrams that measure the characteristics and properties of components and AG/CS/LOV, AG/CS/LOV/ginsenoside Rb1 composites with 11 pages.

30p prisonbreak123 21-05-2021 31 3   Download

Synthesization and structural characterization of nano La2O3, nano CeO2, nano La2O3- CeO2 on laterite by sol - gel combustion method using gelatin precursor; investigation the adsorption and desorption capacity of arsenic, phosphate on La2O3 nanomaterials, CeO2 nanomaterial, mixed oxides La2O3-CeO2 nanomaterial and La2O3-CeO2 nanomaterials on laterite.

28p capheviahe26 25-01-2021 22 4   Download

Find the optimal technology parameters and components for fabricating Fe-based nanomaterials using high-energy ball milling method; clarify the relationship between technological conditions with the structural characteristics and magnetic properties of fabricated materials; assess the applicability of Fe, Fe-Co nano materials in fabricating nanocomposite magnets and magnetic induction heating.

24p capheviahe26 25-01-2021 19 2   Download

Analytical expressions for the anharmonic effective potential, local force constant, Displacement-displacement Correlation Function (DCF) CR and Debye-Waller factor described by the Mean Square Relative Displacement (MSRD) σ2 and by the Mean Square Displacement (MSD) u2of bcc crystals in the X-ray Absorption Fine Structure (XAFS) have been derived. The effective interatomic potential of the system has been considered by taking into account the influences of nearest atomic neighbors, and it contains the Morse potential characterizing the interaction of each pair of atoms.

8p 12120609 01-06-2020 15 2   Download

Polypropylene/ maleic anhydride /organic montmorillonite nanocomposites (PP/ MA/ Org-MMT) have been prepared via direct melt intercalation in an internal mixer. Maleic anhydride (MA) was used as a compatibilizer to improve the dispersability of the clay. The structures of nanocomposites have been characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM) and scanning electron microscopy (SEM). Mechanical properties and thermal stability were determined by tensile analysis and thermogravimetric analysis (TGA), respectively.

8p 12120609 01-06-2020 23 2   Download

Influence of substitution of 3d metals for Mn on properties of La0.67Ca0.33Mn0.9 TM0.1O3 (TM = Fe, Co, Ni) compounds was studied. Ferromagnetic – paramagnetic and metals – insulator transitions were significantly affected by Mn-site substitution. However, no observable difference was found in their crystal structure from X-ray diffraction analysis. At room temperature the structure characterization of these compounds gave the single phase and structure is the distortion orthorhombic cell with space group symmetry Pnma.

12p 12120609 01-06-2020 14 2   Download

It was demonstrated that Poly(p-Xylylene) (PPX) could be prepared from α,α’-Bis(Alkoxy or Aryloxy) –p-Xylenes via chemical vapor decomposition (CVD)- method. This is one-step process and there are side products by the CVD-process. This effect depends both on the CVD- condition and the properties of the starting monomer. The structure and thermal behavior of the material were characterized by FTIR, UVvis spectroscopy, elemental analysis, wide-angle X-ray diffraction, DTA and DSC.

14p 12120609 01-06-2020 18 1   Download

In this investigation, neodymium orthoferrite (NdFeO3) nanoparticles has been synthesized through ultrasonic method in the presence of octanoic acid as surfactant. This method comparing to the other methods is very fast and it does not need high temperatures during the reaction.

8p tocectocec 25-05-2020 4 1   Download

A new series of transition metal complexes of Co(III), Ni(II) and VO(IV) was synthesized with the bidentate Schiff base ligand (HL) derived from the condensation of 2-amino-3-benzyloxypyridine and 5-bromo salicylaldehyde.

14p tocectocec 25-05-2020 26 2   Download

Pentyl 2-(1H-indole-2-carboxamido)benzoate (5) is obtained in good yield as stable crystals by reaction of pentyl 2-amino benzoate (6) with indole-2-carbonyl chloride acid (7) in the presence of pyridine. The crystal structure of 5 confirms the presence of intramolecular hydrogen bonding (N-H…O) which produces a six-membered ring, and the molecules are linked together by intermolecular hydrogen forces (N-H…O).

6p tocectocec 25-05-2020 9 1   Download

A group of new fluoroaniline Schiff bases (3a–3f) were synthesized and structurally characterized by various spectroscopic techniques such as 1H-NMR, LC-MS and FT-IR spectral studies.

8p tocectocec 25-05-2020 16 1   Download

The synthesis, structural identification of four novel cobalt and ironbased metal-organic frameworks (MOFs), named VNU-10 (cobalt-based MOF), VNU-15 (iron-based MOF, VNU = Vietnam National University), Fe-NH2-BDC and Fe-BTC have been done by single crystal x-ray diffraction. Full characterization and application of VNU-10, VNU-15 were undertaken, while preliminary characterizations have been done for Fe-NH2-BDC and Fe-BTC.

26p covid19 02-03-2020 23 1   Download

The objective of the thesis is to produce two types of phase-phase Nano TiO2 materials Nitrogen inclusion on aluminum oxide metal (N-TiO2 / Al2O3) applied as a filter for air purifiers and nanocomposit hydroxyl apatite coated on nitrogen doped TiO2 (HA / N-TiO2) on the wall to treat toluene, Bacteria and fungi contaminate the air.

26p xacxuoc4321 11-07-2019 42 6   Download