Composition and Electronic Structure of LaO/CNFs@C Core-Shell Nanoparticles with Variable Oxygen Content.

LaO nanoparticles stabilized on carbon nanoflake (CNF) matrix were synthesized and graphitized to produce core-shell structures LaO/CNFs@C. Further oxidation of these structures by nitric acid vapors for 1, 3 or 6 h was performed, and surface-oxidized particles LaO/CNFs@C_x (x = 1, 3, 6) were produced. Bulk and surface compositions of LaO/CNFs@C and LaO/CNFs@C_x were investigated by thermogravimetric analysis and X-ray photoelectron spectroscopy.

Discrimination of the SARS-CoV-2 strains using of coloured s-LASCA-imaging of GB-speckles, developed for the gene "S" nucleotide sequences.

: A recent bioinformatics technique involves changing nucleotide sequences into 2D speckles. This technique produces speckles called GB-speckles (Gene Based speckles). All classical strategies of speckle-optics, namely speckle-interferometry, subtraction of speckle-images as well as speckle-correlometry have been inferred for processing of GB-speckles.

Conversion of Secondary C3-C4 Aliphatic Alcohols on Carbon Nanotubes Consolidated by Spark Plasma Sintering.

We analyze how the changes in the dimension of carbon nanomaterial (CNM) affect their catalytic conversion of secondary aliphatic alcohols. Carbon nanotubes (CNTs) consolidated by spark plasma sintering (SPS) were inactive in the conversion of secondary C-C aliphatic alcohols because of the «healing» of defects in carbon structure during SPS. Gas-phase treatment of consolidated CNTs with HNO vapors led to their surface oxidation without destruction of the bulk structure of pellets.

Could LASCA-imaging of GB-speckles be applied for a high discrimination and typing of pathogenic bacteria?

In this article, the method of analysis of GB-speckles (gene-based speckles) has been adapted to the problem of detecting the differences in a group of genes (usually 5-7), used in Multi Locus Sequence Typing (MLST). This method is based on s-LASCA imaging (spatial Laser Speckle Contrast Analysis) of virtual GB-speckle and on the technique of RGB coordinates for GB-speckles, processed by the s-LASCA method. A very high sensitivity and accuracy of the new method for detecting gene polymorphism as a great alternative to classical MLST has been demonstrated.

Lead isotopic ages of chondrules and calcium-aluminum-rich inclusions.

The lead-lead isochron age of chondrules in the CR chondrite Acfer 059 is 4564.7 +/- 0.6 million years ago (Ma), whereas the lead isotopic age of calcium-aluminum-rich inclusions (CAIs) in the CV chondrite Efremovka is 4567.