A variant of 3-3-1 model for the generation of the SM fermion mass and mixing pattern

We propose an extension of the 3-3-1 model with an additional symmetry group $Z_{2}\times Z_{4} \times U(1)_{L_g}$ and an extended scalar sector. To our best knowledge this is the first example of a renormalizable 3-3-1 model, which allows explanation of the SM fermion mass hierarchy by a sequential loop suppression: tree-level top and exotic fermion masses, 1-loop bottom, charm, tau and muon masses; 2-loop masses for the light up, down, strange quarks as well as for the electron. The light active neutrino masses are generated from a combination of linear and inverse seesaw mechanisms at two loop level. The model also has viable fermionic and scalar dark matter candidates.Comment: 35 pages, 4 figures. Version accepted for publication in JHE

Техническое обслуживание малоинтенсивных железных дорог в современных условиях

The article is devoted to clarification of the structure of maintenance of low-intensity railways by optimising infrastructure maintenance operational personnel using the example of Mikunsky infrastructure section of the Northern Infrastructure Directorate of Russian Railways. As an example of the distance for operation of infrastructure, the article considers Berlin section of infrastructure of German railways. The task of organising the activities of the infrastructure linear enterprise of the track complex, including track section workers (PC), signalling, centralisation and blocking (SCB) maintenance section personnel working within enlarged teams and emergency repairs teams equipped with service trains and KamAZ vehicles, is considered. For the analysis of information uncertainty, an information model is proposed, for which the risk is considered in the form of determining losses. At the stage of preliminary calculations, a change in the number of maintenance personnel will make it possible to obtain a reduction in operating costs.Статья посвящена структуре технического обслуживания малоинтенсивных железных дорог за счёт уточнения эксплуатационного штата по содержанию инфраструктуры на примере Микуньской дистанции инфраструктуры Северной Дирекции инфраструктуры. Примером дистанции по эксплуатации инфраструктуры в статье рассматривается Берлинская дистанция инфраструктуры железных дорог Германии. Рассмотрена постановка задачи по организации деятельности инфраструктурного линейного предприятия путевого комплекса, включающего работников дистанции пути (ПЧ), персонал по обслуживанию сигнализации, централизации иблокировки (СЦБ), работающих по системе укрупнённых бригад ибригад по неотложным работам, оснащённых путеремонтными летучками, хозяйственными поездами и автомобилями КамАЗ. Для анализа информационной неопределённости предлагается информационная модель, для которой риск рассматривается ввиде определения потерь. На стадии предварительных расчётов изменение численности обслуживающего персонала позволит получить сокращение эксплуатационных расходов на полигоне МЖЛ за счёт экономии фонда заработной платы

The effect of hypodynamia on mineral and protein metabolism in calcified tissues of the maxillodental system (experimental radioisotope study)

Mineral and protein metabolism was studied in experiments on 60 white rats, using P-32 and Ca-45 uptake in the mineral fractions, 2C-14-glycine in the protein fractions, and P-32 in both fractions of calcified tissues as indices over a 100 day period of experimental hypodynamia. Combined alterations in mineral and protein metabolism occurred in the calcified tissues of the experimental animals. The most pronounced changes were found in P-32 and 2C-14-glycine metabolism. In the incisors and femoral bones, these alterations occurred in two phases: P-32 and 2C-14-glycine uptake first increased, then decreased. Changes in Ca-45 metabolism were less pronounced, particularly in the initial period of the experiment. A marked reduction in P-32, Ca-45, and 2C-14-glycine uptake was found in various fractions of the calcified tissues on the 100th day of experimental hypodynamia