Применение детандер-генератора для повышения ресурсоэффективности газораспределительной станции магистрального газопровода

Объектом исследования является: Газораспределительная станция "Урожай-20" магистрального газопровода "П-К" в Томской области. Цель работы: Выбор наиболее оптимального детандер–генераторного агрегата для использования потенциала природного газа при редуцировании на газораспределительной станции. В процессе исследования были проведены: аналитический обзор детандер–генераторных агрегатов применимых для газораспределительных станций различной производительности, изучение характеристик и специфики эксплуатации газораспределительной станции; выбор оптимального детандер–генераторного агрегата для использования его на ГРС-Ч "Урожай-20; проведение расчетов мощности и рентабельности применения детандер–генераторного агрегата.Object of the study: gas distribution station "Urozhay-20" of the main gas pipeline "P-K" in the of the Tomsk region. Purpose – Selection of the most optimal expander-generator set for using natural gas capabilities while reducing at a gas distribution station. The study included: analytical review of expander-generator sets applicable for gas distribution stations of various capacities, study of characteristics and specific features of operation of the gas distribution station, selection of the optimal expander-generator set for its use on GDS "Urozhai-20, carrying out of calculations of capacity and profitability of application of the expander-generator set, adoption of the most acceptable schemes for the introduction of an expander-generator set at AGRS "Urozhay-20"

Переподготовка преподавателей к реализации CLIL: опыт Томского политехнического университета

Статья посвящена описанию опыта Томского политехнического университета в отношении переподготовки преподавателей инженерных образовательных программ к реализации CLIL-обучения. Применяемый курс повышения квалификации направлен на формирование методической базы, позволяющей реализовать CLIL-подход в профессиональной практике

Petrophysical zoning elements of Chertovo Koryto gold-ore deposit (Patom Upland, Eastern Siberia)

The paper considers magnetic susceptibility (chi) and electrode potentials (EP) of rocks in the Chertovo Koryto deposit. Carbon-bearing substance is found in all the studied samples, but in some cases, this substance supplies EP (-150 ± -400 mV). In these samples [chi] rarely exceeds 40·10{-5} SI units, while, in other samples [chi] is 8-10 (up to 30) times higher. Less intensive EP (-20 ± -240 mV) is furnished due to the sulfides in this deposit. Rocks with polarized carbon-bearing substance do not contain magnetic pyrrhotine and are negative linear EP anomalies. Rocks in which carbon-bearing substance is associated with pyrrhotine are revealed as magnetic anomalies. The adjacent rocks determine petrophysical zoning of the Chertovo Koryto deposit. The combination of negative linear EP anomalies and magnetic anomalies is a potential indicator and can define the multi-stage formation of the deposit itself

Deconvolution of the relaxations associated with local and segmental motions in poly(methacrylate)s containing dichlorinated benzyl moieties in the ester residue

9 pages, 15 figures, 1 scheme.The relaxation behavior of poly(2,3-dichlorobenzyl methacrylate) is studied by broadband dielectric spectroscopy in the frequency range of 10–1–109 Hz and temperature interval of 303–423 K. The isotherms representing the dielectric loss of the glassy polymer in the frequency domain present a single absorption, called B process. At temperatures close to Tg, the dynamical (alfa) relaxation already overlaps with the (beta) process, the degree of overlapping increasing with temperature. The deconvolution of the (alfa) and (beta) relaxations is facilitated using the retardation spectra calculated from the isotherms utilizing linear programming regularization parameter techniques. The temperature dependence of the (beta) relaxation presents a crossover associated with a change in activation energy of the local processes. The distance between the (alfa) and (beta) peaks, expressed as log(fmax;/fmax;) where fmax is the frequency at the peak maximum, follows Arrhenius behavior in the temperature range of 310–384 K. Above 384 K, the distance between the peaks remains nearly constant and, as a result, the (alfa) onset temperature exhibited for many polymers is not reached in this system. The fraction of relaxation carried out through the (alfa) process, without (beta) assistance, is larger than 60% in the temperature range of 310–384 K where the so-called Williams ansatz holds.This work was financially suported by the DGCYT and CAM through Grant Nos. MAT2002-04042-C02 and GR/ MAT/0723/2004. Two of the authors (L.G. and D.R.) thank the FONDECYT for partial financial support through Grant Nos. 21050956 and 1050962, respectively.Peer reviewe

Accumulation of radioactive elements (U, Th) in the multilaer peat deposit of the raised bog (southern taiga of Western Siberia)

In this paper, we consider the temporal dynamics features of the radioactive elements (Th, U) content in the core of a high-moor multilayer swamp peat deposit, typical for the forest zone of Western Siberia. The role of global, regional, and local factors in the accumulation of Th and U at different stages of bog formation has been determined. Significant direct and indirect (through the consequences of cryogenic processes) influence of the Holocene climate on the accumulation of these radioactive elements have been established. Significant losses of U in peat deposits of runoff flowing troughs were revealed. The Uconcentrations and EF (U) have been proposed as an indicator of the degree of the flow of bog paleoecotopes water regime