71 research outputs found

    Structure and Charge States of the Selected Hydrogenated Silicon Clusters Si2-Si8 by Non-Conventional Tight-Binding Method

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    Structures of SinHm clusters in neutral, positive and double positive charge states have been calculated by nonconventional tight-binding method and molecular dynamics. An influence of the charge state and the termination by hydrogen of dangling bonds on cluster structures those are obtained as a result of chemical vapor precipitation in silane, is considered for the first time. Fully hydrogenated clusters have tetrahedral branched structures. Other isomers have forms of closed circles

    The importance and benefits of joint faculties in higher education

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    The article studies the reforms in the educational system of the Republic of Uzbekistan on the example of joint faculties and the benefits of Double degree program

    The importance and benefits of joint faculties in higher education

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    The article studies the reforms in the educational system of the Republic of Uzbekistan on the example of joint faculties and the benefits of Double degree program

    The Development of Deformation in Concrete and Reinforcement in Concrete Beams Reinforced with Fiberglass Reinforcement

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    This article presents experimental data on the development of deformations in longitudinal reinforcement and concrete in the compressed zone of the section of bent concrete beams made of ordinary heavy concrete, equipped with fiberglass composite reinforcement under the action of transverse forces

    Recommendations on reducing the shadow economy in the Republic of Uzbekistan based on the world experience

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    The article dwells on the types of shadow economy. The authors of the article analyse the causes of the occurrence and increase in the volume of the shadow economy. The authors of the article demonstrate how the world experience in a fight against the shadow economy is implemented in Uzbekista

    Recommendations on reducing the shadow economy in the Republic of Uzbekistan based on the world experience

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    The article dwells on the types of shadow economy. The authors of the article analyse the causes of the occurrence and increase in the volume of the shadow economy. The authors of the article demonstrate how the world experience in a fight against the shadow economy is implemented in Uzbekista

    THE RELATIONSHIP BETWEEN STIFFNESS LOSSES AND LOSSES IN BEARINGS OF ROPE BLOCKS

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    Nanosize Structures and Energy Parameters of Doped Silicon Clusters Passivated by Hydrogen

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    The paper considers the computer model of silicon clusters doped with boron and phosphorus, and the effect of hydrogen on their structure and energy parameters. While calculating nanostructure formation, the model assumes hydrogenated Si29 clusters with substitution of a matrice atom with B and P impurities and insertion of one or some hydrogen atoms. Nanostructured defect complexes of Si-P-H or Si-B-H are suggested to be formed under hudrogen insertion, with their stability depending on the hydrogen atom number and the dopant type. Computer modelling and optimization calculations were carried out in the frame of nonempyrical modelling methods for structure and properties of multiparticle systems - ORCA under the approximation of local electron state density
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