Entanglement of macroscopically distinct states of light

Schr\"odinger's famous Gedankenexperiment has inspired multiple generations of physicists to think about apparent paradoxes that arise when the logic of quantum physics is applied to macroscopic objects. The development of quantum technologies enabled us to produce physical analogues of Schr\"odinger's cats, such as superpositions of macroscopically distinct states as well as entangled states of microscopic and macroscopic entities. Here we take one step further and prepare an optical state which, in Schr\"odinger's language, is equivalent to a superposition of two cats, one of which is dead and the other alive, but it is not known in which state each individual cat is. Specifically, the alive and dead states are, respectively, the displaced single photon and displaced vacuum (coherent state), with the magnitude of displacement being on a scale of $10^8$ photons. These two states have significantly different photon statistics and are therefore macroscopically distinguishable

Use of etiotropic and pathogenetic medicines for COVID-19 in patients with renal failure and/or on dialysis

Impaired kidney function may influence pharmacokinetics of most of the drugs, including the ones used in COVID-19. In this publication, the most important pharmacokinetic parameters and dose adjustment approaches are provided, based on The Renal Drug Handbook и Sanford Guide. In the majority of cases, mild kidney function reduction does not necessitate dose adjustment. Each case should be considered individually, measuring benefits against risks

Stabilization of Self-slaking Slags from Ferroalloy Production

In this study, the process of stabilization for highly basic self-slaking slags of ferroalloy production by various boron-containing materials were studied: tincalconite, colemanite, and ulexite (produced in Turkey). The viscosities and temperatures of crystallization for the initial boron-containing materials are determined. Under laboratory conditions, high-base slag melts were treated with boron-containing materials to obtain slags containing 0.25 and 0.5% B2О3. It was shown that the addition of boric anhydride to the studied slag melts extends the homogeneous-liquid state interval and reduces their viscosity by 1.2–1.6 times, therefore B2О3can be used as a tool for controlling slag mobility in industrial conditions. The industrial tests were conducted to stabilize the slag of low-carbon ferrochrome using powdered calcined, briquetted, and fused colemanite. After treatment, slags contained 43–47% CaO, 0.18–0.45% B2О3. The results of pilot-industrial experiments show that all applied boron-containing materials ensure slag stabilization and differ only in the degree of boron recovery. Fused colemanite showed the highest results in the recovery of B2О3(up to 98%), a commercial product was obtained which fully complies according to the technical characteristics with the requirements of Specification TU 0798-69-00186499-2014 “Crushed stone and sand from ferroalloy slags. Technical conditions.” Keywords: ferroalloy, slag, self-slaking slag, stabilization, boron, two-calcium silicat

Thermal phase transitions in rotating QCD with dynamical quarks

Relativistic rotation causes a change of QCD critical temperatures. Various phenomenological and effective models predict a decrease of the critical temperatures in rotating QCD. Nevertheless, lattice simulations showed that the critical temperature in gluodynamics increases due to rotation. We extend the lattice study to the theory with dynamical fermions. We present the first lattice results for rotating QCD with $N_f=2$ dynamical clover-improved Wilson quarks. We also study separately the effect of rotation on gluonic and fermionic degrees of freedom. It is shown that separate rotations of gluons and fermions have opposite effects on the critical temperatures. In aggregate, the pseudo-critical temperatures in QCD increase with angular velocity. Dependence of the results on the pion mass is also discussed.Comment: 10 pages, 5 figures, Proceedings of the 39th International Symposium on Lattice Field Theory, 8th-13th August, 2022, Bonn, German

The Reduction of Boron By Silicothermal Method

Thermodynamic modeling (TM) of the boron reduction process from the CaO–SiO2– MgO–B2O3 oxide system by silicon of ferrosilicon of FeSi65 and FeSi75 grades has been carried out. TM is made using the HSC 6.12 Chemistry software package developed by Outokumpu Research Oy (Finland). The equilibrium composition of oxide CaO-SiO2-MgO-B2O3 and metallic Si-Al-Fe systems was determined using the Equilibrium Compositions module in a given temperature range of 1400–1700∘C and a gas phase pressure of 1 atm. The effect of silicon of ferrosilicon grades (FeSi65 and FeSi75) on the degree of boron reduction (

On the issue of the genetic structure of species found in the relic communities of central russian upland southern territories

This paper performs a comparative analysis of population genetic structure concerning specially protected species of terrestrial mollusk Helicopsis striata Müller and the herbaceous plant Androsace kozo-poljanskii Ovs

Entangled resource for interfacing single- and dual-rail optical qubits

Today's most widely used method of encoding quantum information in optical qubits is the dual-rail basis, often carried out through the polarisation of a single photon. On the other hand, many stationary carriers of quantum information - such as atoms - couple to light via the single-rail encoding in which the qubit is encoded in the number of photons. As such, interconversion between the two encodings is paramount in order to achieve cohesive quantum networks. In this paper, we demonstrate this by generating an entangled resource between the two encodings and using it to teleport a dual-rail qubit onto its single-rail counterpart. This work completes the set of tools necessary for the interconversion between the three primary encodings of the qubit in the optical field: single-rail, dual-rail and continuous-variable.Comment: Published in Quantu

Measuring device for kinematic and dynamic parameters investigation applied to the deep-sea earthmoving equipment

В работе приведено обоснование инженерных решений по созданию устройства для исследования кинематики и динамики глубоководного грунторазрабатывающего оборудования применительно к канатно‐ковшовым средствам пробоотбора научно‐исследовательских судов типа «Профессор Водяницкий» и «Владимир Паршин»It is given the construction solutions of measuring device for kinematic and dynamic parameters investigation applied to the deep‐sea dredging equipment used at the research vessels “Professor Vodyanitsky” and “Vladimir Parshyn”

Pharmacological evaluation polysaccharide complex flowers tansy

From flowers tansy extracted polysaccharide complex. Installed its qualitative and quantitative composition, have developed a technique standardizing the content of reducing sugars. By thin layer chromatography and high pressure liquid chromatography after acid hydrolysis installed monosaccharide composition: glucose, xylose, arabinose, galactose and mannose. It is proved that the polysaccharide has a high content of uronic acid, which allows it to include the class of pectin. The investigation of gastroprotective activity of polysaccharide in the prophylactic administration at model destruction of the gastric mucosa to indomethacin. Introduction polysaccharide prevents various types of erosive and ulcerative destruction. According to anti-ulcer activity of the drug is superior to ranitidine and comparable to omeprazol