Features of the exogenic development of Passalurus ambiguus (Nematoda, Oxyuroidae) at different temperature regimes

Passalurosis is a prevalent disease among helminthiases of domestic rabbits. This invasion is caused by the nematode Passalurus ambiguus (Nematoda, Oxyuroidae), which is cosmopolitan and localized in the cecum and colon of rabbits. Passalurosis is highly contagious and capable of unlimited spread, due to the biological characteristics of its pathogen, such as the conditions that ensure maximum preservation of parasites at exogenous stages of their development. Experimental research in the laboratory established the timing of development of P. ambiguus eggs isolated from the gonads of female helminths, depending on temperature regimes and features of their growth and development. According to the morphological features of Passalurus eggs, four stages were distinguished in their exogenous development: zygote, cleavage and formation of blastomeres, formation of larvae and motile larvae. Depending on the cultivation temperature, the duration of embryogenesis ranged from 4 to 9 days, and egg viability ranged from 59.3% to 72.7%. The most favourable temperature regime for the development of P. ambiguus eggs was the temperature of 35 °C, at which 72.7% of eggs with motile larvae were formed within 4 days. At this temperature, the zygote stage lasted for 1 day of cultivation, the stage of cleaving and formation of blastomeres occurred on days 1–2, the stage of larval formation on days 1–3, and the stage of formation of motile larva on days 3–4. At lower temperatures, the term of development of Passalurus eggs increased, and the number of viable eggs decreased. At temperatures of 30 °С and 25 °С, the development of Passalurus eggs took place during 5 and 7 days, respectively, and the viability was 66.7% and 62.7%. At these temperatures, the zygote stage lasted 1–2 and 1–3 days, the stage of cleaving and formation of blastomeres occurred on days 1–3 and 1–4, the stage of larval formation lasted from days 2–4 and 2–6, and the stage of formation of motile larvae took place on days 3–5 and 4–7, respectively. The least favourable temperature for the development of P. ambiguus eggs was the temperature of 20 °С, at which the formation of motile larvae occurred in 9 days, and their viability was only 59.3%. At this temperature, the zygote stage lasted 1–4 days, the stage of cleaving and blastomere formation occurred on days 2–6, and the larval formation stage on days 3–8, and the motile larval stage happened on days 5–9. The growth and development of P. ambiguus eggs was accompanied by significant changes in morphometric parameters, such as the increase in egg width and thinning of egg shell at the egg shell plug. The obtained data will allow preventive measures to be effectively implemented on rabbit farms that are susceptible to pinworms, taking into account the terms of exogenous development of pathogens in different seasons

Formación de la interacción social competencia de futuros especialistas del ámbito gerencial

Trends in the economic situation development in the Russian Federation determine the basic requirements for graduates of Russian universities in the direction of “management” training, whose professional competence depends directly on the level of mastering communication skills and social interaction skills. The social interaction competence for managers is the key one in the formation of professional competencies and affects the decision-making of many professional tasks. The social interaction competence plays an important role in the management personnel training because they have a need for constant interaction with people, staff and clients. Lack of social interaction competence can lead to failures in professional activities. Thus, the bachelor of management should have not only knowledge in the professional sphere, but also be able to interact with various specialists, clients, and partners, carrying out high-level social communication that can affect effectively the result of professional activity.Las tendencias en el desarrollo de la situación económica en la Federación de Rusia determinan los requisitos básicos para los graduados de las universidades rusas en la dirección de la formación de “gestión”, cuya competencia profesional depende directamente del nivel de dominio de las habilidades de comunicación y de interacción social. La competencia de interacción social para los gerentes es la clave en la formación de competencias profesionales y afecta la toma de decisiones de muchas tareas profesionales. La competencia de interacción social juega un papel importante en la capacitación del personal de gestión, ya que tienen una necesidad de interacción constante con las personas, el personal y los clientes. La falta de competencia de interacción social puede conducir a fallas en las actividades profesionales. Por lo tanto, el licenciado en administración debe tener no solo conocimiento en el ámbito profesional, sino también poder interactuar con varios especialistas, clientes y socios, llevando a cabo una comunicación social de alto nivel que pueda afectar de manera efectiva el resultado de la actividad profesional

Comparison of the results of star counts in nine open star clusters by the data of 2MASS and Gaia DR1

Звездные подсчеты с помощью метода kernel estimator проведены для скоплений NGC 1912, NGC 2099, NGC 4052, NGC 5715, NGC 6268, NGC 6834, NGC 7142, IC 2714, Czernik 38. Для подсчетов были использованы данные каталога Gaia DR1. Полученные результаты сравниваются с результатами звездных подсчетов по данным каталога 2MASS.Star counts were carried out for the clusters NGC 1912, NGC 2099, NGC 4052, NGC 5715, NGC 6268, NGC 6834, NGC 7142, IC 2714, Czernik 38 with the use of kernel estimator by Gaia DR1 data. Results are compared with the results of star counts by 2MASS data.Часть работ проведена при финансовой поддержке государства в лице Министерства образования и науки Российской Федерации (базовая часть госзадания, РК №AAAA-A17-117030310283-7), а также при финансовой поддержке Правительства РФ (постановление №211, контракт №02.A03.21.0006)

Structural and dynamical characteristics of nine open star clusters

В рамках проекта по созданию однородного каталога структурных и динамических характеристик рассеянных звездных скоплений звездные подсчеты с помощью метода kernel estimator проведены для скоплений NGC 1912, NGC 2099, NGC 4052, NGC 5715, NGC 6268, NGC 6834, NGC 7142, IC 2714, Czernik 38. Для подсчетов были использованы данные каталога 2MASS. Для скоплений выборки построены карты распределения и радиальные профили поверхностной плотности, получены оценки функций светимости и функций масс, определены положения центров, получены оценки радиусов, чисел звезд и масс скоплений.Within the framework of the project of a development of the uniform catalog of structural and dynamical characteristics of open star clusters, star counts were carried out for the clusters NGC 1912, NGC 2099, NGC 4052, NGC 5715, NGC 6268, NGC 6834, NGC 7142, IC 2714, Czernik 38 with the use of kernel estimator by 2MASS data. Two-dimensional maps and radial profiles of a surface density, estimates of luminosity functions and mass functions have obtained for the sample clusters. The positions of cluster centres and estimates of the cluster radii, number of stars and masses have been determined.Часть работ проведена при финансовой поддержке государства в лице Министерства образования и науки Российской Федерации (базовая часть госзадания, РК № AAAA-A17-117030310283-7), а также при финансовой поддержке Правительства РФ (постановление № 211, контракт № 02.A03.21.0006)

Upper gastrointestinal tract pathology as one of the causes of anemia in liver cirrhosis patients (scientific review)

The main pathological changes of the upper gastrointestinal tract in liver cirrhosis patients are esophageal varices, gastric varices, portal hypertensive gastropathy, gastric antral vascular ectasi. Each of them may cause anemia due to acute or chronic bleedings. Correct and timely approach of the complex therapy of this condition (endoscopic and/or medicamentous) may help to keep cirrhotic patient alive.Основными формами патологии верхних отделов желудочно-кишечного тракта при развитии портальной гипертензии являются варикозное расширение вен пищевода и желудка, портальная гипертензионная гастропатия и желудочная антральная васкулярная эктазия, каждая из которых при длительном развитии приводит к анемии за счет острых или хронических кровопотерь. Своевременность диагностики и правильность подходов к комплексной терапии данного состояния (медикаментозной и/или эндоскопической) часто позволяет сохранить жизнь больного циррозом

Инфекционный мононуклеоз: нетипичная манифестация

 In most cases, EBV mononucleosis in hospitalized children occurs in a typical form, with a classical clinical picture. Cases of hepatitis, as the leading syndrome in EBV infection, are extremely rare. The article presents a clinical case of atypical onset of infectious mononucleosis of EBV etiology, which started with liver damage syndrome. This clinical experience gives an opportunity to run diagnostics of herpesvirus infections in cases of nonspecific liver damage.  В большинстве случаев ВЭБ-мононуклеоз у госпитализированных детей протекает в типичной форме, с характерной клинической картиной. Случаи гепатита, как ведущего синдрома при ВЭБ-инфекции, чрезвычайно редки.В статье представлен клинический случай нетипичного начала инфекционного мононуклеоза ВЭБ этиологии, стартовавшего с синдрома поражения печени. Данный клинический опыт дает возможность рекомендовать проведение диагностики на герпесвирусные инфекции в случаях неспецифического поражения печени.

Increasing Abrasive Wear Resistance of Instrumental Steels High–Temperature Hardening

An additional reserve for increasing the abrasive wear resistance of pearlite class steels (U12, 70KHGML, 150KHNML) is high-temperature hardening with the formation of metastable austenite in the structure. The maximum wear resistance during abrasive wear is achieved after high-temperature hardening (1150 °C) in oil, which forms a martensitic structure with metastable austenite, which, when wear out, turns into martensite with a high ability to frictional hardening.Дополнительным резервом повышения абразивной износостойкости сталей перлитного класса (У12,70ХГМЛ,150ХНМЛ) — служит высокотемпературная закалка с образованием в структуре метастабильного аустенита. Максимальная износостойкость при абразивном изнашивании достигается после высокотемпературной закалки (1150 °C) в масле, формирующей мартенситную структуру с метастабильным аустенитом, при изнашивании превращающимся в мартенсит с высокой способностью к фрикционному упрочнению