27.664 hasil
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EPJ Web of Conferences
ISSN 2100-014X · EDP Sciences · 27.664 artikel di indeks
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Artikel Jurnal Teks lengkap
Development and Optimization of Herbal Cream for Ringworm: A Natural Approach to Antifungal Treatment
The present study focuses on the formulation and evaluation of a herbal cream intended for the treatment of ringworm, a common fungal infection. With growing global interest in plant-based remedies, particularly those with antimicrobial properties, this research utilizes natural ingredients known…
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Challenges in Alzheimer’s Drug Development: Failures, Therapeutic Barriers and Clinical Translation
Alzheimer's disease (AD) continues to pose a significant challenge in pharmaceutical research, with drug development marked by high attrition rates despite decades of investigation. Numerous therapeutic candidates, particularly those targeting amyloid-beta and tau proteins, have shown promise in…
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A new approach for material classification based on quantitative analysis
Accurate identification and classification of a material based on energy dispersive spectrometry (EDS) has always been a challenge, down to the variability between systems, acquisition conditions, spectrum processing methods and accuracy in quantitative analysis results. Traditional methods rely on…
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Wavelength-Dispersive Micro X-Ray Fluorescence (WDμXRF) Analysis with the microprobe
An Electron Probe Microanalyser (EPMA) determines the element distribution by detection of the electron beam excited characteristic X-rays using wavelength-dispersive spectrometers (WDS). This study evaluates the benefits of implementing a micro-focus X-ray source into the EPMA as an alternative…
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Getting your EBSD data right, combing optical microscopy and optical simulations from EBSD orientation data in MTEX
In this study we demonstrate how one can use the optical Tensor tool in free open-source toolbox MTEX add on to Matlab ® to confirm that EBSD orientations are correctly applied with respect to the desired representation of the data, both in plotting convention and sample reference orientation. We…
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Development of correlated FIB-ToF-SIMS and SEM-AM methods for the search for, and characterisation of, enriched uranium particles
As part of a global initiative to detect and monitor uranium use in nuclear facilities, the International Atomic Energy Agency (IAEA) collects environmental samples from various countries and analyses them for the presence of man-modified uranium and other nuclear fuel cycle materials. For example…
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Using EBSD analysis for exploring the recrystallization behavior of hot-rolled Mg-Gd alloy
The microstructure, texture and mechanical properties of a Mg-0.6Gd (wt.%) alloy processed by hot-rolling at 450 °C to 85% of thickness reduction and subsequently annealed at temperatures ranging from 150 to 450 °C for 1 h were investigated using electron backscatter diffraction (EBSD) and Vickers…
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Characterisation and Validation of Submicron Structures in a Fe–Al–Nb Alloy Using Inverse Modelling of the PN Method for EPMA
Using conventional matrix correction methods, the spatial resolution of EPMA is limited by the size of the electron interaction volume. Secondary and back-scattered electron imaging techniques achieve higher spatial resolution, but can only provide structural information at the surface of the…
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EDS with Low-Voltage SEM: Possibilities and limitations of lithium detection and quantification
Achieving reliable detection and quantification of lithium (Li) with high spatial resolution down to the nanometer (nm) range is a major challenge on the path to fully understanding lithium-ion batteries throughout their life span. This paper presents possible influencing factors, such as…
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Challenges in measuring low concentration of overlapping elements with EDS and the need for verification with secondary standard composition
Quantitative analysis using energy-dispersive spectrometry (EDS) has been shown to achieve high accuracy equivalent to that of wavelength-dispersive x-ray spectrometry (WDS) even in the case of highly overlapped X-ray peaks of major elements and high precision in the case of trace elements with…
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Study of Nitrogen Diffusion in Aluminum Containing Plasma-Nitrided Air-Hardening Medium Manganese Steels
This study explores the effects of plasma nitriding on the surface hardness and nitride compound layer thickness of AHD steels containing 4% manganese, with a focus on aluminium content and treatment temperature. A temperature range from 500-700°C was studied. Chemical analysis and nitrogen…
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Sensitive boron detection with a table-top wavelength dispersive spectrometer
Boron has many applications in science and industry yet there don't exist any easy-to-use X-ray fluorescence analysis techniques to detect low concentrations of boron in a sample. Wavelength dispersive X-ray spectrometry (WDX) after excitation by scanning electron microscope (SEM-WDX) combines high…
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Multi-methods approach for characterizing lithium-ion batteries aged to induce lithium plating
A comprehensive understanding of aging phenomena in lithiumion batteries requires advanced analytical tools. This study applies a multi-method post-mortem approach to characterize structural and chemical changes in graphite anodes from cells cycled under conditions designed to induce lithium…
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Anisotropic soft X-ray emission spectroscopy study of the valence electron state of Lu(Al,T)B4 (T= Cr, Mn, Fe, Mo) exhibiting two-dimensional B-layers
Lu(Al,T)B4 (T= Cr, Mn, Fe, Mo) have the alternate stacking structure of B-layer and Lu(Al,T)-layer along the c-axis. B-K emission spectra of these materials are measured at two take-off angles of 20° and 70° from the c-plane. The energy region corresponding to the top of valence band (VB) shows a…
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Soft X-ray emission of nickel silicides and nickel aluminides
Measurements are presented of the Si and Al L X-ray emission bands of Ni silicides (Ni31Si12 and Ni2Si) and Ni aluminides (Ni2Al3 and NiAl3). The spectra, obtained with a soft X-ray spectrometer and electron beam excitation, reflect the distribution of Si and Al s- and d-states in the valence band…
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Development and application of soft X-ray spectroscopy and cathodoluminescence to minerals
The addition of hyperspectral soft x-ray emission spectrometers (SXES) and cathodoluminescence (CL) spectrometry to electron microprobes gives access to spectroscopies that provide sample information not available from wavelength-dispersive (WDS) or energy-dispersive X-ray spectrometers (EDS). We…
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Spectroscopy, electronic structure and quantification attempt in the spectral range of the Li Kα emission band
In this work, we present the way we perform high-resolution wavelength-dispersive X-ray spectrometry in the ultra-soft X-ray range. For this purpose, we use a reflection zone plate spectrometer working, as a variable line spacing grating spectrometer, in the 40 - 110 eV spectral range. We show that…
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Water content and iron oxidation state analysis of silicate glass using the electron probe
The water content (H2O) and iron oxidation state (Fe3+/FeT) of silicate glass are useful compositional parameters to measure in volcanology and igneous petrology due to: (1) their influence on the chemical and physical properties of magmas, and (2) their use in constraining the…
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Nanomineralogy of planetary materials
The scientific significance and scarcity of extraterrestrial rock and mineral samples means that techniques for nanoscale analysis are essential tools for planetary scientists. This review describes some applications of key methods for identifying minerals in meteorites and samples that have been…
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