On a question of A. N. Skiba about totally saturated formations

It is proved that the lattice of τ-closed totally saturated formations of finite groups is distributive. This is a solution of Question 4.2.15 proposed by A. N. Skiba in his monograph "Algebra of Formations" (1997)

On τ-closed totally saturated group formations with Boolean sublattices

In the universe of finite groups the description of τ-closed totally saturated formations with Boolean sublattices of τ-closed totally saturated subformations is obtained. Thus, we give a solution of Question 4.3.16 proposed by A.N.Skiba in his monograph "Algebra of Formations" (1997)

Search for jet extinction in the inclusive jet-pT spectrum from proton-proton collisions at s=8 TeV

Published by the American Physical Society under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published articles title, journal citation, and DOI.The first search at the LHC for the extinction of QCD jet production is presented, using data collected with the CMS detector corresponding to an integrated luminosity of 10.7  fb−1 of proton-proton collisions at a center-of-mass energy of 8 TeV. The extinction model studied in this analysis is motivated by the search for signatures of strong gravity at the TeV scale (terascale gravity) and assumes the existence of string couplings in the strong-coupling limit. In this limit, the string model predicts the suppression of all high-transverse-momentum standard model processes, including jet production, beyond a certain energy scale. To test this prediction, the measured transverse-momentum spectrum is compared to the theoretical prediction of the standard model. No significant deficit of events is found at high transverse momentum. A 95% confidence level lower limit of 3.3 TeV is set on the extinction mass scale

Searches for electroweak neutralino and chargino production in channels with Higgs, Z, and W bosons in pp collisions at 8 TeV

Searches for supersymmetry (SUSY) are presented based on the electroweak pair production of neutralinos and charginos, leading to decay channels with Higgs, Z, and W bosons and undetected lightest SUSY particles (LSPs). The data sample corresponds to an integrated luminosity of about 19.5 fb(-1) of proton-proton collisions at a center-of-mass energy of 8 TeV collected in 2012 with the CMS detector at the LHC. The main emphasis is neutralino pair production in which each neutralino decays either to a Higgs boson (h) and an LSP or to a Z boson and an LSP, leading to hh, hZ, and ZZ states with missing transverse energy (E-T(miss)). A second aspect is chargino-neutralino pair production, leading to hW states with E-T(miss). The decays of a Higgs boson to a bottom-quark pair, to a photon pair, and to final states with leptons are considered in conjunction with hadronic and leptonic decay modes of the Z and W bosons. No evidence is found for supersymmetric particles, and 95% confidence level upper limits are evaluated for the respective pair production cross sections and for neutralino and chargino mass values

Оn one application of the theory of n-multiply -local formations of finite groups

Описываются некоторые свойства и примеры n-кратно -локальных формаций. Рассматривается одно применение таких формаций в теории конечных факторизуемых групп.Some properties and examples of n-multiply -local formations are described. One application of such formations in the the-ory of finite factorisable groups are cosidered

Traumatic tracheal rupture in closed chest trauma (a clinical case)

The purpose was to present a clinical case of a soldier with a rupture of the cervical and thoracic parts of the trachea due to closed chest trauma. Early and complete diagnosis of chest injuries, which includes mandatory X-ray and fibrobronchoscopy, can save the life of an injured person, helps choose the optimal method of treatment and improve its outcomes. When choosing the therapeutic approach in patients with traumatic tracheal injuries, it is extremely important to take into account the mechanism of injury, the nature of tracheal damage, the presence and severity of post-traumatic complications, the general condition of the patient, and capacities of a healthcare institution. Given the frequent occurrence in the acute period of life-threatening complications due to traumatic tracheal injury, the formation of gross scarring with the development of tracheal stenosis is possible in the long term, preference is given to active surgical correction of traumatic changes in the tracheal wall. Traumatic injury to the tracheobronchial tree should be suspected in all injured patients with subcutaneous emphysema, hemoptysis, and dyspnea. Adequate examination and treatment of patients with traumatic tracheal rupture requires highly specialized medical care that is based on knowledge, experience, and skills for managing such trauma. X-ray and fibrobronchoscopy must be included in the examination algorithm of such patients. When choosing the treatment approach in patients with traumatic tracheal injuries, it is extremely important to take into account the mechanism of injury, the general condition of the patient, the presence of post-traumatic complications, and capacities of a healthcare institution. Conservative treatment for traumatic tracheal rupture with timely use of minimal surgical interventions can be successful in complete ruptures of the membranous wall of the medium length without development of life-threatening complications