In the present work, a method for adjusting a crystal analyzer to separate two characteristic lines from the spectrum of a conventional X-ray tube for simultaneous registration of tomographic projections is proposed. The experimental implementation of this method using radiation of a molybdenum anode (α, β lines) and a silicon Si(111) crystal analyzer in Laue geometry is presented. Projection images at different wavelengths are separated in space and can be recorded independently for further processing. Potential uses of this scheme are briefly discussed.
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http://dx.doi.org/10.1107/S1600576720005439 | DOI Listing |
Eur J Pharm Sci
January 2025
Faculty of Pharmacy, University of Ljubljana, 1000 Ljubljana, Slovenia; KRKA, d. d., 8501 Novo Mesto, Slovenia. Electronic address:
One of the main concerns with formulations containing amorphous solid dispersions (ASDs) is their physical stability. Stability can be compromised if a formulation contains any residual crystallinity of an active pharmaceutical ingredient (API) that could act as seeds for further crystallisation. This study presents four methods for crystalline amlodipine maleate quantification in ASD, which were developed using one Raman and three NIR process analysers.
View Article and Find Full Text PDFBiomed Phys Eng Express
January 2025
Physics Department, University of Albany, State University of New York, Albany, United States of America.
Conventional x-ray radiography relies on attenuation differences in the object, which often results in poor contrast in soft tissues. X-ray phase imaging has the potential to produce higher contrast but can be difficult to utilize. Instead of grating-based techniques, analyzer-based imaging, also known as diffraction enhanced imaging (DEI), uses a monochromator crystal with an analyzer crystal after the object.
View Article and Find Full Text PDFBMC Nephrol
January 2025
Division of Nephrology, Johns Hopkins School of Medicine, 1830 E Monument Street, Room 416, Baltimore, MD, 21287, USA.
Background: Urinalysis is a commonly performed test for the diagnosis and prognosis of kidney disease in hospitalized patients. It involves examining the chemical composition of the urine and microscopy to examine the cells and casts. In clinical settings, urinalysis is frequently delayed by several hours after sample collection and held at room temperature.
View Article and Find Full Text PDFHeliyon
December 2024
Department of Applied Chemistry and Chemical Engineering, Islamic University, Kushtia, Bangladesh.
Hematite (α-FeO) nanoparticles have been synthesized from waste source of iron which contains a prominent amount of iron (93.2 %) and investigated the effect of low temperature calcination. The two-step synthesis method involved preparing ferrous sulfate through acid leaching process followed by oxidation and calcination at temperatures ranging from 200 to 400 °C to produce the desired α-FeO in nano form.
View Article and Find Full Text PDFClin Chim Acta
February 2025
Departments of Laboratory Medicine, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing 100730, China. Electronic address:
Background: To explore the underlying causes of significant fluctuations in creatinine levels within three days due to transient and severe uric acid elevation, and to provide evidence for the interpretation of abnormal test results and clinical diagnosis and management.
Methods: The issues were resolved by retesting the samples, comparing results across different detection platforms, and analyzing the reaction curve. We comprehensively reviewed patients' general conditions, imaging examinations, and treatments.
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