Unusual Sequence of the Critical Magnetic Fields , , and in Multicomponent Superconductors.

All superconductors in a magnetic field are characterized by three critical magnetic fields: lower critical , upper critical and thermodynamic critical field . Only two sets of inequalities or are possible in a single-component superconductor. Here, we report our study of the critical fields in multicomponent superconductors with two superconducting components in the framework of the Ginzburg-Landau functional.

[Gastroenterological symptoms in COVID-19 patients with mild severity of the disease: opportunities to optimize antidiarrheal therapy].

Background: The novel coronavirus infection COVID-19 can be manifested by damage to the organs of the gastrointestinal tract (GIT). Damage to the gastrointestinal tract by the SARS-CoV-2 virus leads to a violation of the microbial-tissue complex of the mucous membrane of the digestive tract. A common gastroenterological manifestation of COVID-19 is diarrhea.

Distributed quasi-Bragg beam splitter in crossed atomic waveguides.

We perform an experimental and theoretical study of a novel distributed quasi-Bragg splitter for cold atoms propagating in crossed optical waveguides. The atoms are guided by horizontal red-detuned laser beams which cross with an angle of roughly 90°. The lattice formed by the interference between the two waveguides is used as a quasi-Bragg splitter to continuously deflect the atomic flux from one waveguide into the other.

Principles for diagnosis and treatment of pulmonary embolism.

Pulmonory embolism takes the third place in cardiovascular mortality structure. Separate clinical symptoms don't have adequate sensibility and specificity for pulmonary embolism verification. For pulmonary embolism diagnosis are usually used clinical probability scales.

[Modern approaches to diagnosis and treatment of tachyarrhythmia at military-medical organizations].

Modem approaches to diagnosis and treatment of tachyarrhythmia at military-medical organizations.. The article describes the principles of differential diagnosis and treatment of tachyarrhythmia.