New moduli components of rank 2 bundles on projective space

We present a new family of monads whose cohomology is a stable rank two vector bundle on $\mathbb{P}^3$. We also study the irreducibility and smoothness together with a geometrical description of some of these families. These facts are used to construct a new infinite series of rational moduli components of stable rank two vector bundles with trivial determinant and growing second Chern class. We also prove that the moduli space of stable rank two vector bundles with trivial determinant and second Chern class equal to 5 has exactly three irreducible rational components

INFECTIOUS COMPLICATIONS IN PATIENTS UNDERGOING ORTHOTOPIC HEART TRANSPLANTATION

This article presents a retrospective analysis of infectious complications in the structure of morbidity and mortality of the patients underwent orthotopic heart transplantation. A significant role was assigned to the predisposing to in- fection factors. This study was based on the two years heart transplantation experience in the Republic of Belarus

Приборы газовой защиты подземных сооружений

Розглянуто проблеми створення приладів газового захисту підземних споруд. Описано особливості розробки, конструкції та експлуатації вітчизняного сигналізатора порогових концентрацій метану та оксиду вуглецю типу СМК.The considered problems of creation of gas defense devices for underground building. The features of development, construction and exploitation of the home signaling of threshold concentrations of metanou and carbon oxide of type SMK are described.Рассмотрены проблемы создания приборов газовой защиты подземных сооружений. Описаны особенности разработки, конструкции и эксплуатации отечественного сигнализатора пороговых концентраций метана и оксида углерода типа СМК

STUDY OF THE PROPERTIES OF THE POLYMER COMPOSITIONS USING THE MODIFIED LATEX COAGULUM

Summary. Properties of the latex coagulum formed during the manufacture of styrene-butadiene latices were investigated. Processing conditions coagulum for further use in the composition of the polymer base composites and rubber compounds were grown. Plasticizers latex coagulum system, improving its handling on the process equipment were developed. In the process of changing the structure of the plasticization of the polymer matrix: solid areas appear in images taken with a scanning probe microscope. Ability to manufacture polymer composites based on treated latex coagulum was shown. When creating the polymeric compositions of styrene-butadiene rubber SCS-30-15 ARKM plasticized coagulum optimum ratio of 70:30 has been selected. Influence the type and dosage of plasticizer viscosity compositions latex coagulum with rubber SKS-30-15 ARKM been established. Application consisting of plasticized polymer base coagulum provides physic-mechanical properties of rubber at the control rules of molded rubber products. It is noted that the best combination of properties of rubber and rubber blends possess samples based polymer compositions coagulum plasticized combination of petroleum oils. It has been established that the use of latex coagulum in the polymer base composition causes sufficiently high values of Mooney viscosity and short curing starts. The influence of active chemical additives (derivatives of saturated fatty acids, 2,2-azo-bis-isobutyronitrile) to change the properties of the latex coagulum during machining on a mill was studied. Two ways of handling coagulum in the presence of accelerators mastication was proposed. Found that mixing coagulum accelerators advisable to carry out before the stage of the plasticizing coagulum

RECEPTION AND OXIDISING AGEING OF FILMS OF RUBBERS

Oxidising ageing полидиенов, especially important for an estimation of operational durability of protective films is considered