scholarly journals Ultra-small cobalt particles embedded in titania by ion beam synthesis: Additional datasets including electron microscopy, neutron reflectometry, modelling outputs and particle size analysis

Data in Brief ◽  
2022 ◽  
Vol 40 ◽  
pp. 107674 ◽  
Author(s):  
Abdulhakim Bake ◽  
Md Rezoanur Rahman ◽  
Peter J. Evans ◽  
Michael Cortie ◽  
Mitchell Nancarrow ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Particle Size ◽  
Ion Beam ◽  
Particle Size Analysis ◽  
Neutron Reflectometry ◽  
Size Analysis ◽  
Ion Beam Synthesis

scholarly journals Functional Properties and Molecular Degradation of Schizostachyum Brachycladum Bamboo Cellulose Nanofibre in PLA-Chitosan Bionanocomposites

Molecules ◽  
2021 ◽  
Vol 26 (7) ◽  
pp. 2008
Author(s):  
Samsul Rizal ◽  
N. I. Saharudin ◽  
N. G. Olaiya ◽  
H. P. S. Abdul Khalil ◽  
M. K. Mohamad Haafiz ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Particle Size ◽  
Moisture Content ◽  
Polymeric Materials ◽  
Particle Size Analysis ◽  
Size Analysis ◽  
Thickness Swelling ◽  
Compression Moulding ◽  
Ft Ir ◽  
Degradation Properties

The degradation and mechanical properties of potential polymeric materials used for green manufacturing are significant determinants. In this study, cellulose nanofibre was prepared from Schizostachyum brachycladum bamboo and used as reinforcement in the PLA/chitosan matrix using melt extrusion and compression moulding method. The cellulose nanofibre(CNF) was isolated using supercritical carbon dioxide and high-pressure homogenisation. The isolated CNF was characterised with transmission electron microscopy (TEM), FT-IR, zeta potential and particle size analysis. The mechanical, physical, and degradation properties of the resulting biocomposite were studied with moisture content, density, thickness swelling, tensile, flexural, scanning electron microscopy, thermogravimetry, and biodegradability analysis. The TEM, FT-IR, and particle size results showed successful isolation of cellulose nanofibre using this method. The result showed that the physical, mechanical, and degradation properties of PLA/chitosan/CNF biocomposite were significantly enhanced with cellulose nanofibre. The density, thickness swelling, and moisture content increased with the addition of CNF. Also, tensile strength and modulus; flexural strength and modulus increased; while the elongation reduced. The carbon residue from the thermal degradation and the glass transition temperature of the PLA/chitosan/CNF biocomposite was observed to increase with the addition of CNF. The result showed that the biocomposite has potential for green and sustainable industrial application.

The Evaporative Decomposition of Solutions Method (Eds) for the Production of Ultrafine Y1Ba2Cu3O7 from Nitrate and Mixed Anion Precursor Solutions

1989 ◽  
Vol 169 ◽  
Author(s):  
Rollin E. Lakis ◽  
Sidney R. Butler
Keyword(s):  
Electron Microscopy ◽  
Particle Size ◽  
Barium Carbonate ◽  
Hollow Spheres ◽  
Particle Size Analysis ◽  
Size Analysis ◽  
Gravimetric Analysis ◽  
X Ray Diffraction ◽  
X Ray ◽  
Transmission Electron

AbstractY1Ba2Cu3O7 has been prepared by the evaporative decomposition of solutions method. Nitrate and mixed anion solutions were atomized and decomposed at temperatures ranging from 300°C to 950°C. The resulting materials have been characterized using x-ray powder diffraction, Thermal Gravimetric Analysis (TGA), particle size analysis, Scanning Electron Microscopy (SEM), and Transmission Electron Microscopy (TEM). The powder consists of 0.3 micron agglomerated hollow spheres with a primary particle size of 0.06 micron. TGA and x-ray diffraction indicate the presence of barium nitrate and barium carbonate due to incomplete decomposition and/or product contamination by the process environment.

scholarly journals PREPARATION AND CHARACTERIZATION OF ANTI-ACNE ETHOSOMES USING COLD AND THIN-LAYER HYDRATION METHODS

2018 ◽  
Vol 10 (1) ◽  
pp. 338
Author(s):  
Rachmawati Ramadhana Mustofa ◽  
Iskandarsyah .
Keyword(s):  
Electron Microscopy ◽  
Particle Size ◽  
Thin Layer ◽  
Particle Size Analysis ◽  
Size Analysis ◽  
Multilamellar Vesicles ◽  
Zeta Potentials ◽  
Small Unilamellar Vesicles

Objective: This study aimed to prepare and characterize anti-acne ethosomes using the cold- and thin-layer hydration methods.Methods: A sonication step was included during ethosome preparation to improve the quality of the cold method. Azelaic acid, Phospholipon 90G,ethanol, propylene glycol, and phosphate buffer (pH 7.4) were used in the procedures. Prepared ethosomal suspensions were characterized usingtransmission electron microscopy, particle-size analysis, and spectrophotometry.Results: Ethosomes prepared using the thin-layer hydration method (F1) had small unilamellar vesicles, while those prepared using the cold methodwith 15-min sonication (F4) showed spherical, elliptical, unilamellar, and multilamellar vesicles. F1 ethosomes had a Dmean volume of 648.57±231.26,whereas those prepared using the cold method with 5- (F2), 10- (F3), and 15-min (F4) sonication had Dmean volumes of 2734.04±231.49 nm,948.90±394.52 nm, and 931.69±471.84 nm, respectively. Polydispersity indices of F2, F3, and F4 ethosomes were 0.74±0.21, 0.86±0.05, and 0.91±0.03,respectively, with a poor particle-size distribution, compared to that of F1 (0.39±0.01). Zeta potentials of F1–F4 ethosomes were −38.27±1.72 mV,−23.53±1.04 mV, −31.4±1.04 mV, and −34.3±1.61 mV, respectively. Entrapment efficiencies of F1–F4 ethosomes were 90.71±0.11%, 53.84±3.16%,72.56±0.28%, and 75.11±1.42%, respectively.Conclusion: Anti-acne ethosomes produced using the thin-layer hydration method had superior properties than those produced using the coldmethod with 15-min sonication.

Particle Size Analysis for Fuel Cell Catalysts Using Electron Microscopy: Bright Field or HAADF Images?

2012 ◽  
Vol 18 (S2) ◽  
pp. 1364-1365 ◽  
Author(s):  
Y. Zhao ◽  
Y. Tang ◽  
G. Vaughan ◽  
D. Ozkaya
Keyword(s):  
Electron Microscopy ◽  
Particle Size ◽  
Fuel Cell ◽  
Particle Size Analysis ◽  
Size Analysis ◽  
Bright Field ◽  
Fuel Cell Catalysts

Extended abstract of a paper presented at Microscopy and Microanalysis 2012 in Phoenix, Arizona, USA, July 29 – August 2, 2012.

Inhalation of nail dust from onychomycotic toenails. Part I. Characterization of particles. 1984

1992 ◽  
Vol 82 (2) ◽  
pp. 111-115 ◽  
Author(s):  
C Abramson ◽  
J Wilton
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Particle Size ◽  
Total Mass ◽  
Particle Size Analysis ◽  
Dust Particles ◽  
Size Analysis ◽  
Scanning Electron

Nail dust particles were analyzed by scanning electron microscopy for size and topography. The percentage of "fines" that could be inhaled and deposited in the alveoli and bronchioles were determined by quantitative particle size analysis. Distribution representing the largest total mass was graphed between 1 and 2 microns. The authors found that 86% of nail dust would reach the bronchioles and alveoli, and 31% could be expected to deposit in these areas.

Strain and particle size analysis in ion beam synthesized SiC nanoparticles using Raman scattering studies

2017 ◽  
Vol 52 (5) ◽  
pp. 1600391 ◽  
Author(s):  
K. Saravanan ◽  
G. Jayalakshmi ◽  
B. K. Panigrahi ◽  
René Hübner
Keyword(s):  
Particle Size ◽  
Raman Scattering ◽  
Ion Beam ◽  
Particle Size Analysis ◽  
Size Analysis ◽  
Sic Nanoparticles

Development of Olanzapine Nano-Emulsion for Enhanced Brain Delivery

2012 ◽  
Vol 5 (1) ◽  
pp. 1648-1659
Author(s):  
Madhusudan Rao Y ◽  
Shailaja M ◽  
Ramakrishna S ◽  
Ramesh G ◽  
K H Reddy ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Particle Size ◽  
Research Work ◽  
Particle Size Analysis ◽  
Correlation Spectroscopy ◽  
Size Analysis ◽  
Uniform Size ◽  
Transmission Electron ◽  
Nano Emulsion

The main objective of the present research work was to design, optimize and characterize olanzapine loaded nano-emulsion for improved brain transport of the drug.   Olanzapine nano-emulsion was formulated using the ultrasonication method. The formulation variables (oil and surfactant) and process variables (ultrasonication time) were optimized by Response surface methodology using the Box-Behnken statistical method. Particle size, polydispersity index (PDI) and zeta potential were measured by photon correlation spectroscopy using a Malvern zeta sizer. Morphology of emulsion droplets was examined by transmission electron microscopy (TEM). Release study was performed and drug release was estimated by HPLC method. Stability studies were performed at 4oC-25oC for a period of three months. The optimized nano-emulsion obtained showed a uniform size distribution with an average size in the range of 65.1 nm to 74.21 nm and surface charge in the range of –18.9 mv to – 25.23 mv. The Transmission electron microscopy studies on olanzapine nano-emulsion revealed a spherical morphology of globules. An average of 91.91% of drug was released from the optimized formulation over a period of 24 hours. The particle size analysis after three months showed no significant change implying that the nano-emulsion was quite stable when stored at room temperature. Stable olanzapine nano-emulsion was formulated. The novel nanoformulation was found to be a potential vehicle for delivery of olanzapine to the brain.

scholarly journals Effects of Prepolymerized Particle Size and Polymerization Kinetics on Volumetric Shrinkage of Dental Modeling Resins

2014 ◽  
Vol 2014 ◽  
pp. 1-6
Author(s):  
Tae-Yub Kwon ◽  
Jung-Yun Ha ◽  
Ju-Na Chun ◽  
Jun Sik Son ◽  
Kyo-Han Kim
Keyword(s):  
Electron Microscopy ◽  
Particle Size ◽  
Particle Size Analysis ◽  
Laser Diffraction ◽  
Polymerization Kinetics ◽  
Volumetric Shrinkage ◽  
Size Analysis ◽  
Polymerization Shrinkage ◽  
Custom Made ◽  
Scanning Electron

Dental modeling resins have been developed for use in areas where highly precise resin structures are needed. The manufacturers claim that these polymethyl methacrylate/methyl methacrylate (PMMA/MMA) resins show little or no shrinkage after polymerization. This study examined the polymerization shrinkage of five dental modeling resins as well as one temporary PMMA/MMA resin (control). The morphology and the particle size of the prepolymerized PMMA powders were investigated by scanning electron microscopy and laser diffraction particle size analysis, respectively. Linear polymerization shrinkage strains of the resins were monitored for 20 minutes using a custom-made linometer, and the final values (at 20 minutes) were converted into volumetric shrinkages. The final volumetric shrinkage values for the modeling resins were statistically similar (P>0.05) or significantly larger (P<0.05) than that of the control resin and were related to the polymerization kinetics (P<0.05) rather than the PMMA bead size (P=0.335). Therefore, the optimal control of the polymerization kinetics seems to be more important for producing high-precision resin structures rather than the use of dental modeling resins.

scholarly journals Nano Zinc Oxide Green-Synthesized from Plumbago auriculata Lam. Alcoholic Extract

Plants ◽  
2021 ◽  
Vol 10 (11) ◽  
pp. 2447
Author(s):  
Mina Michael Melk ◽  
Seham S. El-Hawary ◽  
Farouk Rasmy Melek ◽  
Dalia Saleh ◽  
Omar M. Ali ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Particle Size ◽  
Zinc Oxide ◽  
Plant Extract ◽  
Particle Size Analysis ◽  
Size Analysis ◽  
Alcoholic Extract ◽  
Zno Nps ◽  
Subtype B ◽  
Average Size

Zinc oxide nanoparticles (ZnO NPs) were synthesized by using an alcoholic extract of the flowering aerial parts of Plumbago auriculata Lam. Dynamic Light Scattering (DLS) revealed that the average size of synthesized ZnO NPs was 10.58 ± 3.350 nm and the zeta potential was −19.6 mV. Transmission electron microscopy (TEM) revealed that the particle size was in the range from 5.08 to 6.56 nm. X-ray diffraction (XRD) analysis verified the existence of pure hexagonal shaped crystals of ZnO nanoparticles with an average size of 35.34 nm in the sample, which is similar to the particle size analysis acquired by scanning electron microscopy (SEM) (38.29 ± 6.88 nm). HPLC analysis of the phenolic ingredients present in the plant extract showed that gallic acid, chlorogenic acid, and catechin were found as major compounds at concentrations of 1720.26, 1600.42, and 840.20 µg/g, respectively. Furthermore, the inhibitory effects of ZnO NPs and the plant extract against avian metapneumovirus (aMPV) subtype B were also investigated. This assessment revealed that the uncalcinated form of Nano-ZnO mediated by P. auriculata Lam. extract possessed a significant antiviral activity with 50% cytotoxic concentration (CC50) and 50% inhibition concentration (IC50) of 52.48 ± 1.57 and 42.67 ± 4.08 µg/mL, respectively, while the inhibition percentage (IP) was 99% and the selectivity index (SI) was 1.23.

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