Novel technology for controlled fabrication of aperture cantilever sensors for scanning near-field optical microscopy.

This paper presents a new technique for forming SNOM (Scanning Near-Field Optical Microscopy) cantilevers. The technique is based on the continuous growth of a conical hollow tip using local ion-induced carbon deposition on standard tipless cantilever chips. This method offers precise control of the geometric parameters of the cantilever's tip, including the angle of the tip, the probe's curvature radius, and the input and output aperture diameter.

EMPIRICAL RESEARCH ON THE FEATURES OF PSYCHOEMOTIONAL STATES OF ADOLESCENT ATHLETES DURING QUARANTINE RESTRICTIONS.

Objective: The aim: To study the features of psychoemotional states of adolescent athletes during quarantine restrictions, depending on gender, type of sport (individual or team) and the typological profile of the hubristic motivation.

Patients And Methods: Materials and methods: The empirical sampling was composed of 116 adolescent athletes. During the study, the methods of "Determination of the dominant state" (L.

Controlling the parameters of focused ion beam for ultra-precise fabrication of nanostructures.

At present, the focused ion beam method is an effective technique for nanoscale profiling of a solid surface and prototyping of micro- and nanoscale structures. The article reveals the results of experimental studies on improving the accuracy and resolution of nanoscale profiling of the surface of solids with a focused ion beam. Investigations of the regularities of the influence of the focused ion beam current, beam dwell time and overlap on the parameters of nanoscale structures and the surface profile have been carried out.

Efficacy of evaluation of microRNA-122 and microRNA-21 levels in the role of biomarkers of oligosymptomatic choledocholithiasis in patients with acute calculous cholecystitis.

Aim: The aim of this study was to evaluate the efficacy of determining the microRNA-122 and microRNA-21 expression levels in serum and bile as predictors of the presence of oligosymptomatic choledocholithiasis in patients with acute calculous cholecystitis.

Materials And Methods: The study included 32 patients who were divided into two groups: I - study group and II - comparison group. The study group included patients with acute calculous cholecystitis (ACC) and oligosymptomatic choledocholithiasis (OCL) (n=23), and the comparison group consisted of patients with ACC without choledocholithiasis (n=9).

Perspective for evaluation of microrna in plasma and bile for differential diagnosis of obstructive biliary tract disease.

Objective: Introduction: Cholelithiasisis diagnosed in 10-25% of the adult population. The manifestation of cholelithiasis in the form of acute cholecystitis, cholangitis, jaundice etc. occurs with a probability of 2-3% or more per year depending on the risk factors.

Life duration: a new systemic hypothesis.

A new hypothesis of ageing based on morphologic evidence is presented. The developmental process is determined by a kinetic curve of population growth which is typical for every association of cells. Every multicellular organism is considered as a system that consists of various cellular associations in symbiotic interaction.