150 research outputs found

    Π Π°Π·Ρ€Π°Π±ΠΎΡ‚ΠΊΠ° ΠΌΠ΅Ρ‚ΠΎΠ΄ΠΈΠΊΠΈ оптичСской ΠΈΠ΄Π΅Π½Ρ‚ΠΈΡ„ΠΈΠΊΠ°Ρ†ΠΈΠΈ сварных соСдинСний

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    Выпускная квалификационная Ρ€Π°Π±ΠΎΡ‚Π° содСрТит 110 стр., 27 рис., 35 Ρ‚Π°Π±Π»., 41 источник, 9 ΠΏΡ€ΠΈΠ»ΠΎΠΆΠ΅Π½ΠΈΠΉ. ΠžΠ±ΡŠΠ΅ΠΊΡ‚Π°ΠΌΠΈ исслСдования ΡΠ²Π»ΡΡŽΡ‚ΡΡ ΠΌΠ΅Ρ‚ΠΎΠ΄Ρ‹ оптичСской Π΄Π²ΡƒΠΌΠ΅Ρ€Π½ΠΎΠΉ ΠΈ Ρ‚Ρ€Π΅Ρ…ΠΌΠ΅Ρ€Π½ΠΎΠΉ рСконструкции. ЦСль Ρ€Π°Π±ΠΎΡ‚Ρ‹ – Ρ€Π°Π·Ρ€Π°Π±ΠΎΡ‚Π°Ρ‚ΡŒ ΠΌΠ΅Ρ‚ΠΎΠ΄ΠΈΠΊΡƒ ΠΈΠ΄Π΅Π½Ρ‚ΠΈΡ„ΠΈΠΊΠ°Ρ†ΠΈΠΈ сварных соСдинСний ΠΊΠΎΠ½Ρ‚Π΅ΠΉΠ½Π΅Ρ€ΠΎΠ² с ОЯВ ΠΈ РАО. Π’ процСссС исслСдования ΠΏΡ€ΠΎΠ²ΠΎΠ΄ΠΈΠ»Π°ΡΡŒ Ρ€Π°Π·Ρ€Π°Π±ΠΎΡ‚ΠΊΠ° ΠΌΠ΅Ρ‚ΠΎΠ΄ΠΈΠΊΠΈ ΠΈΠ΄Π΅Π½Ρ‚ΠΈΡ„ΠΈΠΊΠ°Ρ†ΠΈΠΈ тСкстурных особСнностСй повСрхностСй сварных соСдинСний, рассмотрСны вопросы Ρ‚Π΅Ρ…Π½ΠΎΠ»ΠΎΠ³ΠΈΠΈ ΠΈ ΠΊΠΎΠΌΠΏΠΎΠ½Π΅Π½Ρ‚ΠΎΠ² систСм рСконструкции, рассмотрСны аспСкты ΡΠΎΡ†ΠΈΠ°Π»ΡŒΠ½ΠΎΠΉ отвСтствСнности ΠΈ финансового ΠΌΠ΅Π½Π΅Π΄ΠΆΠΌΠ΅Π½Ρ‚Π°. Π’ Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Π΅ исслСдования Ρ€Π°Π·Ρ€Π°Π±ΠΎΡ‚Π°Π½Π° ΠΌΠ΅Ρ‚ΠΎΠ΄ΠΈΠΊΠΈ ΠΈΠ΄Π΅Π½Ρ‚ΠΈΡ„ΠΈΠΊΠ°Ρ†ΠΈΠΈ сварных соСдинСний с ΠΏΠΎΠΌΠΎΡ‰ΡŒΡŽ оптичСских ΠΌΠ΅Ρ‚ΠΎΠ΄ΠΎΠ² сканирования. Π—Π½Π°Ρ‡ΠΈΠΌΠΎΡΡ‚ΡŒ Ρ€Π°Π±ΠΎΡ‚Ρ‹ состоит Π² Ρ‚ΠΎΠΌ, Ρ‡Ρ‚ΠΎ систСма позволяСт ΡƒΠ²Π΅Π»ΠΈΡ‡ΠΈΡ‚ΡŒ ΡΡ„Ρ„Π΅ΠΊΡ‚ΠΈΠ²Π½ΠΎΡΡ‚ΡŒ систСм ΠΈΠ΄Π΅Π½Ρ‚ΠΈΡ„ΠΈΠΊΠ°Ρ†ΠΈΠΈ ΡƒΡ‡Π΅Ρ‚Π½Ρ‹Ρ… Π΅Π΄ΠΈΠ½ΠΈΡ†.Master's thesis consist of 110 pages, 27 illustrations, 41 references and 9 attaches. The objects of research are methods of optical two-dimensional and three-dimensional reconstruction. Purpose of this work is to develop methodology for the identification containers welds with spent nuclear fuel and radioactive waste. The study was carried out to develop methods of identification textural features of surfaces of welds, the issues of technology and components renovation systems, considered aspects of social responsibility and financial management. This study developed a technique of identification of welded joints using optical scanning techniques. The significance of the work lies in the fact that the system allows to increase the efficiency identification systems

    Are Critical Phenomena Relevant to Large-Scale Evolution?

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    Recent theoretical studies, based on the theory of self-organized critical systems, seem to suggest that the dynamical patterns of macroevolution could belong to such class of critical phenomena. Two basic approaches have been proposed: the Kauffman-Johnsen model (based on the use of coupled fitness landscapes) and the Bak-Sneppen model. Both are reviewed here. These models are oversimplified pictures of biological evolution, but the (possible) validity of them is based on the concept of universality, i.e. that apparently very different systems sharing some few common properties should also behave in a very similar way. In this paper we explore the current evidence from the fossil record, showing that some properties that are suggestive of critical dynamics would also be the result of random phenomema. Some general properties of the large-scale pattern of evolution, which should be reproduced by these models, are discussed.Peer reviewe

    It Is Time for Carotid Artery Stenting to Rise from the Ashes

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    ΠœΠ°Ρ‚Π΅ΠΌΠ°Ρ‚ΠΈΡ‡Π΅ΡΠΊΠΎΠ΅ ΠΌΠΎΠ΄Π΅Π»ΠΈΡ€ΠΎΠ²Π°Π½ΠΈΠ΅ Ρ€Π΅ΠΆΠΈΠΌΠΎΠ² Ρ€Π°Π±ΠΎΡ‚Ρ‹ Π΄Π²ΡƒΡ…Ρ„Π°Π·Π½ΠΎΠ³ΠΎ тСрмосифона Π² условиях извлСчСния Π³Π΅ΠΎΡ‚Π΅Ρ€ΠΌΠ°Π»ΡŒΠ½ΠΎΠΉ энСргии

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    Percutaneous treatment of thrombosed primary arteriovenous hemodialysis access fistulae.BackgroundWe reviewed the efficacy of percutaneous intervention in acute thrombotic occlusion of native arteriovenous (AV) fistulae for hemodialysis.MethodsEight-one percutaneous procedures were performed in 54 patients presenting with a clotted native dialysis fistula. There were 60 cases of a long-segment thrombosis of the fistula. In 20 cases, a small thrombus usually caused by an underlying severe stenosis was observed. A proximal arterial occlusion was seen in one case. Treatment depended on clot size and included balloon dilation (N = 20), mechanical thrombectomy with various devices (N = 58), as well as pharmacomechanical thrombolysis (N = 3).ResultsFull restoration of flow was established in 72 cases (88.9%). Early reobstruction within 14 days occurred in eight cases (11.1%). Primary patency rates after a 1-, 3-, 6-, and 12-month period were 74, 63, 52, and 27%, respectively. Overall fistula patency was 75% after 3 months, 65% after 6 months, 51% after 12 months, and 22% after 24 months.ConclusionsAcute thrombotic occlusion of native AV fistulae is a major complication of hemodialysis. The results of treatment are believed to be less successful than thrombosis treatment in synthetic grafts. Our results, however, indicate the efficacy of percutaneous treatment in native fistulae, and demonstrate comparable technical results and patency rates

    Π Π°Π·Ρ€Π°Π±ΠΎΡ‚ΠΊΠ° ΠΈ исслСдованиС Π°Π»Π³ΠΎΡ€ΠΈΡ‚ΠΌΠΎΠ² построСния ΠΊΠ°Ρ€Ρ‚Ρ‹ мСстности ΠΏΠΎ Π²ΠΈΠ΄Π΅ΠΎΠΈΠ·ΠΎΠ±Ρ€Π°ΠΆΠ΅Π½ΠΈΡŽ

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    Анализ ΡΡƒΡ‰Π΅ΡΡ‚Π²ΡƒΡŽΡ‰ΠΈΡ… Π°Π»Π³ΠΎΡ€ΠΈΡ‚ΠΌΠΎΠ² ΠΊΠΎΠΌΠΏΡŒΡŽΡ‚Π΅Ρ€Π½ΠΎΠ³ΠΎ зрСния, Π½Π°ΠΏΡ€Π°Π²Π»Π΅Π½Π½Ρ‹Ρ… Π½Π° построСниС ΠΊΠ°Ρ€Ρ‚Ρ‹, Π° Ρ‚Π°ΠΊΠΆΠ΅ синтСз Π½ΠΎΠ²ΠΎΠ³ΠΎ Π°Π»Π³ΠΎΡ€ΠΈΡ‚ΠΌΠ°. ΠŸΡ€Π΅Π΄ΡΡ‚Π°Π²Π»Π΅Π½Π° Ρ€Π°Π·Ρ€Π°Π±ΠΎΡ‚ΠΊΠ° Π°Π»Π³ΠΎΡ€ΠΈΡ‚ΠΌΠΎΠ² для построСния ΠΊΠ°Ρ€Ρ‚Ρ‹ мСстности ΠΈ рСализация Π² ΠΎΠΏΠ΅Ρ€Π°Ρ†ΠΈΠΎΠ½Π½ΠΎΠΉ систСмС для Ρ€ΠΎΠ±ΠΎΡ‚ΠΎΠ².Analysis of existing computer vision algorithms of aimed at mapping, as well as the synthesis of a new algorithm. The development of algorithms for constructing a map of the terrain and implementation in the operating system for robots is presented

    ЭкономичСская ΠΎΡ†Π΅Π½ΠΊΠ° ΡΠ½Π΅Ρ€Π³ΠΎΡΠ±Π΅Ρ€Π΅Π³Π°ΡŽΡ‰ΠΈΡ… мСроприятий Π½Π΅Ρ„Ρ‚Π΅Π³Π°Π·ΠΎΠ²Ρ‹Ρ… прСдприятий Π½Π° ΠΏΡ€ΠΈΠΌΠ΅Ρ€Π΅ ОАО Β«Π’Ρ€Π°Π½ΡΠ½Π΅Ρ„Ρ‚ΡŒ-Π¦Π΅Π½Ρ‚Ρ€Π°Π»ΡŒΠ½Π°Ρ Π‘ΠΈΠ±ΠΈΡ€ΡŒΒ»

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    ΠžΠ±ΡŠΠ΅ΠΊΡ‚ΠΎΠΌ исслСдования являСтся (ΡŽΡ‚ΡΡ) АО Β«Π’Ρ€Π°Π½ΡΠ½Π΅Ρ„Ρ‚ΡŒ – Π¦Π΅Π½Ρ‚Ρ€Π°Π»ΡŒΠ½Π°Ρ Π‘ΠΈΠ±ΠΈΡ€ΡŒΒ» ЦСль Ρ€Π°Π±ΠΎΡ‚Ρ‹ – Π˜Π·ΡƒΡ‡Π΅Π½ΠΈΠΈ использования энСргорСсурсов Π½Π° прСдприятии, рассмотрСниС внСдрСния энСргСтичСского ΠΌΠ΅Π½Π΅Π΄ΠΆΠΌΠ΅Π½Ρ‚Π° ΠΈ Ρ€Π°Π·Ρ€Π°Π±ΠΎΡ‚ΠΊΠ΅ Π½Π° этой Π±Π°Π·Π΅ ряда Ρ€Π΅ΠΊΠΎΠΌΠ΅Π½Π΄Π°Ρ†ΠΈΠΈ Π½Π°ΠΏΡ€Π°Π²Π»Π΅Π½Π½Ρ‹Ρ… Π½Π° сбСрСТСниС энСргорСсурсов ΠΈ ΠΏΠΎΠ²Ρ‹ΡˆΠ΅Π½ΠΈΡŽ экономичСского эффСкта Π’ процСссС исслСдования ΠΏΡ€ΠΎΠ²ΠΎΠ΄ΠΈΠ»ΠΈΡΡŒ - тСорСтичСскиС обоснования нСобходимости использования энСргосбСрСТСния Π½Π° прСдприятии; ΠΎΠΏΡ€Π΅Π΄Π΅Π»Π΅Π½ΠΈΠ΅ основных Π½Π°ΠΏΡ€Π°Π²Π»Π΅Π½ΠΈΠΉ энСргопотрСблСния Π½Π° прСдприятии АО Β«Π’Ρ€Π°Π½ΡΠ½Π΅Ρ„Ρ‚ΡŒ – Π¦Π΅Π½Ρ‚Ρ€Π°Π»ΡŒΠ½Π°Ρ Π‘ΠΈΠ±ΠΈΡ€ΡŒΒ»; Π’ Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Π΅ исслСдования Ρ€Π°Π·Ρ€Π°Π±ΠΎΡ‚Π°Π½ ряд Ρ€Π΅ΠΊΠΎΠΌΠ΅Π½Π΄ΠΎΠ²Π°Π½Π½Ρ‹Ρ… тСхничСских мСроприятий, Π½Π°ΠΏΡ€Π°Π²Π»Π΅Π½Π½Ρ‹Ρ… Π½Π° ΡƒΠ»ΡƒΡ‡ΡˆΠ΅Π½ΠΈΠ΅ Ρ†Π΅Π»Π΅Π²Ρ‹Ρ… ΠΏΠΎΠΊΠ°Π·Π°Ρ‚Π΅Π»Π΅ΠΉ АО Β«Π’Ρ€Π°Π½ΡΠ½Π΅Ρ„Ρ‚ΡŒ – Π¦Π΅Π½Ρ‚Ρ€Π°Π»ΡŒΠ½Π°Ρ Π‘ΠΈΠ±ΠΈΡ€ΡŒΒ»; Π‘Ρ‚Π΅ΠΏΠ΅Π½ΡŒ внСдрСния: Ρ€Π΅ΠΊΠΎΠΌΠ΅Π½Π΄ΠΎΠ²Π°Π½Π½Ρ‹Π΅ тСхничСскиС мСроприятия Π½Π°ΠΏΡ€Π°Π²Π»Π΅Π½Π½Ρ‹Π΅ Π½Π° ΡƒΠ»ΡƒΡ‡ΡˆΠ΅Π½ΠΈΠ΅ ΠΏΠΎΠΊΠ°Π·Π°Ρ‚Π΅Π»Π΅ΠΉ энСргосбСрСТСния.The object of study is (are) of JSC "Transneft – Central Siberia" Purpose – the Study of energy use in the enterprise, consideration of implementation of energy management and development on this basis of a number of recommendations aimed at energy conservation and increasing economic effect In the process of research was conducted on the theoretical justification for the use of energy saving at the enterprise; definition of the main directions of energy consumption at the enterprise of JSC "Transneft – Central Siberia"; The study developed a set of recommended technical measures aimed at improving the target indicators of JSC "Transneft – Central Siberia"; the Degree of implementation of the recommended technical measures to improve energy efficiency

    ΠžΠΏΡ€Π΅Π΄Π΅Π»Π΅Π½ΠΈΠ΅ эксплуатационных ΠΏΠ°Ρ€Π°ΠΌΠ΅Ρ‚Ρ€ΠΎΠ² ядСрных Ρ€Π΅Π°ΠΊΡ‚ΠΎΡ€ΠΎΠ² ΠΌΠ°Π»ΠΎΠΉ мощности

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    ЦСль Ρ€Π°Π±ΠΎΡ‚Ρ‹ – ΠΎΠΏΡ€Π΅Π΄Π΅Π»Π΅Π½ΠΈΠ΅ эксплуатационных ΠΏΠ°Ρ€Π°ΠΌΠ΅Ρ‚Ρ€ΠΎΠ² ядСрного Ρ€Π΅Π°ΠΊΡ‚ΠΎΡ€Π° ΠΌΠ°Π»ΠΎΠΉ мощности, Ρ€Π°Π±ΠΎΡ‚Π°ΡŽΡ‰Π΅Π³ΠΎ Π² Ρ€Π°Π·Π»ΠΈΡ‡Π½Ρ‹Ρ… ядСрных Ρ‚ΠΎΠΏΠ»ΠΈΠ²Π½Ρ‹Ρ… Ρ†ΠΈΠΊΠ»Π°Ρ…. Π’ процСссС исслСдования ΠΏΡ€ΠΎΠ²ΠΎΠ΄ΠΈΠ»ΠΈΡΡŒ расчСты Π½Π΅ΠΉΡ‚Ρ€ΠΎΠ½Π½ΠΎ-физичСских характСристик Ρ€Π΅Π°ΠΊΡ‚ΠΎΡ€Π°, Π½Π° основании ΠΊΠΎΡ‚ΠΎΡ€Ρ‹Ρ… Π±Ρ‹Π»ΠΈ ΠΏΠΎΠ»ΡƒΡ‡Π΅Π½Ρ‹ Ρ‚Π°Π±Π»ΠΈΡ†Ρ‹ ΠΈ построСны Π³Ρ€Π°Ρ„ΠΈΠΊΠΈ; ΠΏΡ€ΠΎΠΈΠ·Π²Π΅Π΄Π΅Π½ расчСт финансовой ΡΠΎΡΡ‚Π°Π²Π»ΡΡŽΡ‰Π΅ΠΉ Ρ€Π°Π±ΠΎΡ‚Ρ‹, описаны внСшниС Ρ„Π°ΠΊΡ‚ΠΎΡ€Ρ‹, влиявшиС Π½Π° Π²Ρ‹ΠΏΠΎΠ»Π½Π΅Π½ΠΈΠ΅ Ρ€Π°Π±ΠΎΡ‚Ρ‹. Π’ Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Π΅ исслСдования Π±Ρ‹Π»ΠΈ ΠΏΠΎΠ»ΡƒΡ‡Π΅Π½Ρ‹ Π½Π΅ΠΉΡ‚Ρ€ΠΎΠ½Π½ΠΎ-физичСскиС характСристики Ρ€Π΅Π°ΠΊΡ‚ΠΎΡ€Π° Π·Π°Π΄Π°Π½Π½ΠΎΠ³ΠΎ ΠΌΠ°Ρ‚Π΅Ρ€ΠΈΠ°Π»ΡŒΠ½ΠΎΠ³ΠΎ состава, ΠΎΡ†Π΅Π½Π΅Π½Π° финансовая ΡΠΎΡΡ‚Π°Π²Π»ΡΡŽΡ‰Π°Ρ Ρ€Π°Π±ΠΎΡ‚Π° ΠΈ описаны внСшниС Ρ„Π°ΠΊΡ‚ΠΎΡ€Ρ‹, ΠΊΠΎΡ‚ΠΎΡ€Ρ‹Π΅ влияли Π½Π° Ρ€Π°Π±ΠΎΡ‚Ρƒ. ΠžΡΠ½ΠΎΠ²Π½Ρ‹Π΅ характСристики: ядСрный ΠΌΠΎΡ‰Π½ΠΎΡΡ‚ΡŒΡŽ 20 ΠœΠ’Ρ‚ с Ρ‚ΠΎΠΏΠ»ΠΈΠ²ΠΎΠΌ UO2 ΠΈ ΠΎΠ±ΠΎΠ³Π°Ρ‰Π΅Π½ΠΈΠ΅ΠΌ 6 % ΠΈ с тСплоноситСлСм Π²ΠΎΠ΄Π°, ΠΈΡΠΏΠΎΠ»ΡŒΠ·ΡƒΡŽΡ‰Π΅Π³ΠΎ Π² качСствС конструкционных ΠΌΠ°Ρ‚Π΅Ρ€ΠΈΠ°Π»ΠΎΠ² Ρ†ΠΈΡ€ΠΊΠ°Π»ΠΎΠΉ-2.Objective - definition of operational parameters of low power nuclear reactor operating in various nuclear fuel cycles. The study carried out calculations of neutron-physical characteristics of the reactor, on the basis of which the tables and the graphs were obtained; The calculation of the financial component of the work are described the external factors influencing the performance of the work. The study was prepared by the reactor neutron-physical characteristics of a given material composition, evaluated the financial component of the work and described the external factors that affect the job. Key Features: a nuclear capacity of 20 MW with UO2 fuel and enrichment 6% and a water-cooled, employing as structural materials Zircaloy-2
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