The structure and thermo EMF of a nanotubular carbon deposit formed in electric discharge plasma

We have studied the structure and thermo emf of a nanotubular carbon deposit formed in electric arc discharge plasma. The deposit contains flocky granules with dimensions of 15–20 μm within a 20–60 μm-thick layer on the substrate surface. This deposit is characterized by a sufficiently high thermo emf (60 μV/K) and electric conductivity (600 Ω⁻¹ m⁻¹).     

Test of the KÉ-250-ShS machine for twisting acetate yarn

Conclusions An attempt has been made to use the KÉ-250-ShS machine for twisting acetate yarns.It has been found that in developing a new twisting machine it is advisable to use a checkerboard disposition of the spindles in its lower part with the objective of reducing the noise level, and also to use pedal braking to stop the spindles. This helps increase the productivity of twister labor, and mechanization and automation of operations associated with transfer in removing packages of weight not less than 3 kg.Translated from Khimicheskie Volokna, No. 6, pp. 40–41, November–December, 1985.     

Method of calculating varying discharges in branch canals with bilateral division of the flow

Translated from Gidrotekhnicheskoe Stroitel'stvo, No. 5, pp. 28–29, May, 1995.     

The effect of the amount of-phase on the vibration absorbing properties of powdered iron-manganese alloy

Conclusions A correlation was established between the content of -phase in the structure of the alloy Fe-Mn and its vibration absorbing properties. An increase of the amount of -martensite to 50–60% leads to an improvement of the vibration absorbing properties; when the content of -phase is further increased, the vibration absorbing properties deteriorate. To ensure maximal vibration absorption, the alloy has to contain 50–60% -phase. It was also cleared up what effect some heat treatment parameters have on the amount of -phase contained in the alloy.Translated from Poroshkovaya Metallurgiya, No. 12(288), pp. 52–55, December, 1986.     

Laser-Printed Plasmonic Metasurface Supporting Bound States in the Continuum Enhances and Shapes Infrared Spontaneous Emission of Coupled HgTe Quantum Dots

In order to advance the development of quantum emitter-based devices, it is essential to enhance light-matter interactions through coupling between semiconductor quantum dots with high quality factor resonators. Here, efficient tuning of the emission properties of HgTe quantum dots in the infrared spectral region is demonstrated by coupling them to a plasmonic metasurface that supports bound states in the continuum. The plasmonic metasurface, composed of an array of gold nanobumps, is fabricated using single-step direct laser printing, opening up new opportunities for creating exclusive 3D plasmonic nanostructures and advanced photonic devices in the infrared region. A 12-fold enhancement of the photoluminescence in the 900–1700 nm range is observed under optimal coupling conditions. By tuning the geometry of the plasmonic arrays, controllable shaping of the emission spectra is achieved, selectively enhancing specific wavelength ranges across the emission spectrum. The observed enhancement and shaping of the emission are attributed to the Purcell effect, as corroborated by systematic measurements of radiative lifetimes and optical simulations based on the numerical solution of Maxwell's equations. Moreover, coupling of the HgTe photoluminescence to high quality factor modes of the metasurface improves emission directivity, concentrating output within an ≈20° angle.     

On models of developing systems and their applications

We consider integral models based on the mathematical model proposed by V.M. Glushkov. We describe a two-sector version of the Glushkov model and consider the identification problem for model parameters. We propose a numerical identification method and present results of test computations. We consider the problem of power grid field described with a one-sector version of the Glushkov model. We give computational results based on real data.     

Palmoplantar Keratoderma: A Molecular Genetic Analysis of Family Cases

Palmoplantar keratoderma is a clinically polymorphic disorder with a heterogeneous etiology characterized by marked hyperkeratotic lesions on the surface of palms and soles. Hereditary forms of palmoplantar keratoderma usually have autosomal dominant inheritance and are caused by mutations in dozens of genes, most of which belong to the keratin family. We carried out clinical and molecular genetic analysis of the affected and healthy members of four families with autosomal dominant palmoplantar keratoderma. In three out of four family cases of autosomal dominant palmoplantar keratoderma, the following molecular genetic causes were established: in two families—previously non-described missense mutations in the AQP5 gene ({"type":"entrez-nucleotide","attrs":{"text":"NM_001651.4","term_id":"1519473780","term_text":"NM_001651.4"}}NM_001651.4): c.369C>G (p.(Asn123Lys)) and c.103T>G (p.(Trp35Gly)); in one family—a described splice site mutation in the KRT9 gene ({"type":"entrez-nucleotide","attrs":{"text":"NM_000226.4","term_id":"1519245988","term_text":"NM_000226.4"}}NM_000226.4): c.31T>G. In one family, the possible cause of palmoplantar keratoderma was detected—a variant in the KRT1 gene ({"type":"entrez-nucleotide","attrs":{"text":"NM_006121.4","term_id":"1519311739","term_text":"NM_006121.4"}}NM_006121.4): c.931G>A (p.(Glu311Lys)).     

Three kinds of particles on a single rationally parameterized world line

We consider the light cone (‘retardation’) equation (LCE) of an inertially moving observer and a single world line parameterized by arbitrary rational functions. Then a set of apparent copies, R- or C-particles, defined by (real or complex conjugate) roots of the LCE will be detected by the observer. For any rational world line the collective R-C dynamics is manifestly Lorentz-invariant and conservative; the latter property follows directly from the structure of Vieta formulas for the LCE roots. In particular, two Lorentz invariants, the square of total 4-momentum and total rest mass, are distinct and both integer-valued. Asymptotically, at large values of the observer’s proper time, one distinguishes three types of LCE roots and associated R-C particles, with specific locations and evolutions; each of three kinds of particles can assemble into compact large groups—clusters. Throughout the paper, we make no use of differential equations of motion, field equations, etc.: the collective R-C dynamics is purely algebraic.