Multiple (inverse) binomial sums of arbitrary weight and depth and the all-order epsilon-expansion of generalized hypergeometric functions with one half-integer value of parameter

We continue the study of the construction of analytical coefficients of the epsilon-expansion of hypergeometric functions and their connection with Feynman diagrams. In this paper, we show the following results: Theorem A: The multiple (inverse) binomial sums of arbitrary weight and depth (see Eq. (1.1)) are expressible in terms of Remiddi-Vermaseren functions. Theorem B: The epsilon expansion of a hypergeometric function with one half-integer value of parameter (see Eq. (1.2)) is expressible in terms of the harmonic polylogarithms of Remiddi and Vermaseren with coefficients that are ratios of polynomials. Some extra materials are available via the www at this http://theor.jinr.ru/~kalmykov/hypergeom/hyper.htmlComment: 24 pages, latex with amsmath and JHEP3.cls; v2: some typos corrected and a few references added; v3: few references added

Dynamics of dental check-ups among the population

The aim of the article: to assess the dynamics of the population coverage of preventive inspections dentists. Material and methods: analytical, statistical, and direct observation. Results. Increase in the number of patients receiving artificial limbs, for example, in the North Caucasus Federal District (+21.8% from 2008 to 2009) And Far East (-30.1 % over the same period). Given that in the North Caucasus Federal District smallest number of patients received pros-theses, such a growth indicator may be due to the volume of supply in the region, taking into account the needs of the population. The sharp decline in the availability of prosthetic patients Far East against the background of dissonance between sanitized and in need of rehabilitation patients with sufficient personnel potential evidence of regional problems in dental care. Even more interesting is the distribution of the proportion of patients who received free dentures. In the North Caucasus Federal District, along with an increase in the total number of patients who received artificial limbs, sharply reduced the proportion of patients who received them free of charge (-64.9% from 2008 to 2009). In a number of countries have not produced any free prosthetics. Conclusion. Reduced the number of patients who received pros-theses, especially for free. The most unfavorable situation is observed in the North Caucasus Federal District (-64.9%), mainly due to the Chechen Republic and the Republic of Dagestan, where the figure is zero. The current situation in the field of dental care, requires a differentiated approach and to adequately address problems from a regional perspective

The analysis of security with dentists in contemporary Russia

Aim: to carry out the analysis of security with dentists in the country in new conditions of reforming. Materials and methods. In work the complex of methods of collecting and the analysis of materials of research is used: bibliographic, analytical, documentary (fragment of data from medical documentation), epidemiological, mathematical and statistical, current supervision. Results. The used integrated approach to tasks allowed to assess a situation on security with the orthopedic stomatologic help and its demand in a section of subjects of the country. The carried-out analysis showed that in general across Russia and in a number of its districts, coverage by routine inspections of the population has the resistant tendency to decrease which is especially expressed in the Volga Federal District (-15,8%). It led to reduction of number of the patients needing sanitation and received sanitation (it is maximum — in Ural federal district (-16,9%). According to official statistics the smallest number of the patients who received the orthopedic stomatologic help — inhabitants of North Caucasus federal district, maximum — Central Federal District. Conclusion. Thus, the analysis of a condition of stomatologic help in the country from 2006 to 2012 let us establish the highest attendance of experts in Volga (108,2% in 2006, 101,3% in 2012) and Central (100,3%-2006, 102,1 %-2012) federal districts, growth of attendance in North Caucasian (for 66,2%) and Far East (for 22%) federal districts. Coverage by routine inspections of the population by stomatologists had the resistant tendency to decrease which is especially expressed in the Volga Federal District (-15%). Decrease in possibility of identification of the patients needing in sanitation and number of the patients who received it was most expressed in Ural federal district: — 16,9%.</p

Modeling the high-field section of a muon helical cooling channel

This paper describes the conceptual design and parameters of a short model of a high-field helical solenoid for muon beam cooling. Structural materials choices, fabrication techniques and first test results are discussed

Assessment of Diagnostic Specificity of Anti-SARS-CoV-2 Antibody Tests and Their Application for Monitoring of Seroconversion and Stability of Antiviral Antibody Response in Healthcare Workers in Moscow

Anti-SARS-CoV-2 antibody testing is an efficient tool to assess the proportion of seropositive population due to infection and/or vaccination. Numerous test systems utilizing various antigen composition(s) are routinely used for detection and quantitation of anti-SARS-CoV-2 antibodies. We determined their diagnostic specificity using archived true-negative samples collected before the onset of the COVID-19 pandemic. Using test systems demonstrating 98.5–100% specificity, we assessed the dynamics of SARS-CoV-2 seroconversion and durability of anti-spike (S) antibodies in healthcare professionals (n = 100) working in Moscow during the first two cycles of the pandemic (May 2020 to June 2021) outside of the “red zone”. Analysis revealed a rapid increase in anti-SARS-CoV-2 seropositivity from 19 to 80% (19/100 and 80/100, respectively) due to virus exposition/infection; only 16.3% of seroconversion cases (13/80) were due to vaccination, but not the virus exposure, although massive COVID-19 vaccination of healthcare workers was performed beginning in December 2020. In total, 12.7% (8/63) remained positive for anti-SARS-CoV-2 IgM for >6 months, indicating unsuitability of IgM for identification of newly infected individuals. All except one remained seropositive for anti-S antibodies for >9 months on average. Significant (>15%) declines in anti-SARS-CoV-2 antibody concentrations were observed in only 18% of individuals (9/50). Our data on the high seropositivity rate and stability of anti-SARS-CoV-2 antibody levels in healthcare personnel working outside of the “red zone” indicate their regular exposition to SARS-CoV-2/an increased risk of infection, while a low frequency of vaccine-induced antibody response acquired after the start of vaccination points to vaccine hesitancy. © 2022 by the authors. Licensee MDPI, Basel, Switzerland

Design of a High Gradient Quadrupole for the LHC Interaction Regions

A collaboration of Fermilab, Lawrence Berkeley National Laboratory and Brookhaven National Laboratory is currently engaged in the design of a high gradient quadrupole suitable for use in the LHC interaction regions. The cold iron design incorporates a two-shell, cos2{theta} coil geometry with a 70 mm aperture. This paper summarizes the progress on a magnetic and mechanical design that meets the requirements of maximum gradient {>=}250 T/m, operation at 1.8K, high field quality and provision for adequate cooling in a high radiation environment