Characteristics of Carbon Nanotubes Synthesized from Methane and Acetylene in the Presence of a FeCl3 Catalyst

Technical Physics - The structures of carbon nanotubes synthesized by catalytic CVD in the same reactor using different carbon-containing precursors and a FeCl3 catalyst have been compared. Methane...     

Editorial to the Special Issue: Adsorption,Absorption and Thermochemical Transport Processes in Complex Porous Structures

Transport in Porous Media - The theme of coupling problems for adsorption, absorption and thermochemical transport in porous media is very important for engineering applications. Based on the...     

Solution of Ponomarev’s Problem of Condensation onto Compact Sets

Siberian Mathematical Journal - Assuming the Continuum Hypothesis (CH), we prove that there exists a perfectly normal compact topological space  $ Z $ and a countable set...     

Source Localization in a Randomly Inhomogeneous Channel Using the Multirank Capon Algorithm

Acoustical Physics - An adaptive version of the multirank Capon algorithm is constructed for acoustic-source localization by a vertical array in the case of incomplete information on the random...     

Design,synthesis, and molecular docking studies of new [1,2,4]triazolo[4,3-a]quinoxaline derivatives as potential A2B receptor antagonists

Molecular Diversity - Many shreds of evidence have recently correlated A2B receptor antagonism with anticancer activity. Hence, the search for an efficient A2B antagonist may help in the...     

Erratum to: Medium Effects for Hadron-Tagged Jets in Proton–Proton Collisions

JETP Letters - An Erratum to this paper has been published: https://doi.org/10.1134/S0021364022420019     

Use of Carbon-Based Composite Materials with Anisotropic Conductivity for Creating Microwave Antennas

Radiophysics and Quantum Electronics - We develop and test engineering solutions aimed at creating antenna devices made of carbonbased composite materials and operated in various intervals of the...     

A Review of the Research into the Mathematical Problems of Mechanics and Control Theory at the Institute of Mathematics of the National Academy of Sciences of Ukraine

Ukrainian Mathematical Journal - We present a review of the research into the mathematical problems of mechanics and control theory carried out at Institute of Mathematics of the National Academy...     

Differential Graded Bocses and A ∞ $A_{\infty }$ -Modules

Algebras and Representation Theory - We introduce and study the category of twisted modules over a triangular differential graded bocs. We show that in this category idempotents split, that it...     

TXRF spectrometry in the bioanalytical sciences: A brief review

This work describes the basic principles of Total-reflection X-Ray Fluorescence (TXRF) spectrometry and some of its most outstanding applications for investigating metal traces, mainly in biological and biomedical samples. TXRF is an analytical technique that combines the versatility of elemental analysis by X-ray energy dispersion with a low detection limit in the order of picograms of absolute mass or a few ppb (μg L⁻¹) as concentration. The microanalytical capacity of TXRF allows the study of small sample quantities. The TXRF can perform qualitative and mass ratio analyses of the elements present in a sample of only a few hundred nanograms. These properties are of great importance in the research of metal traces in biological systems, as they allow fast, precise, and accurate characterisation of the elemental fingerprint at trace level. Its successful application in studies of the coordination kinetics of new platinum-based antitumor drugs with DNA, its application in the study profile of the metal in healthy and cancerous human tissues, or even its application in the study of the processes of metal diffusion through cell membranes are just a few examples of TXRF capabilities in the biomedical sciences. This brief review's main objective is to provide an overview of the physical principles and possibilities of TXRF spectrometry. It also highlights some of the most outstanding applications that have been developed so far, mainly in the biological field, so that the reader can evaluate their potential applications.