Влияние молекулярной массы лигносульфоната натрия на реологические свойства высококонцентрированных суспензий бурого угля

Досліджено вплив молекулярної маси лігносульфонату натрію на реологічні властивості висококонцентрованих водовугільних суспензій на основі бурого вугілля Олександрійського родовища. Встановлено, що низькомолекулярні фракції сприяють розрідженню водовугі-льних суспензій а високомолекулярні виступають в ролі стабілізаторів.Исследовано влияние молекулярной массы лигносульфонатов натрия на реологические свойства высококонцентрированных водоугольных суспензий на основе бурого угля Александрийского месторождения. Установлено, что низкомолекулярные фракции сопутствуют разжижению водоугольных суспензий а высокомолекулярные выступают в роли стабилизаторов

The identification of critical facilities from the position of cybersecurity violation by the example of energy

The article describes methods for identification of critical facilities, being a significant trend in researching critical infrastructures, particularly in the energy sector. The proposed methods are focused on the investigation of the energy object state in relation to the violation of cybersecurity of its information infrastructure. The cyber threats are believed to be important contemporary threats to energy security in Russia. The proposed methods formed the basis of development information-analytical system used for monitoring of cybersecurity violations in energy sector

Региональные рудоконтролирующие структуры Урала

One of the most challenging requirements for the next generation EUV lithography is an extremely low amount of critically sized defects on mask blanks. Fast and reliable inspection of mask blanks is still a challenge. Here we present the current status of the development of our actinic Schwarzschild objective based microscope operating in dark field with EUV discharge produced plasma source. For characterization of the microscope performance, several programmed defect structures - artificial pits and bumps were created on top of multilayer mirror (ML) surfaces and investigated both with EUV microscope and atomic force microscope (AFM). Defect size sensitivity of actinic inspection in dark field mode without resolving the defects is under study. The dependency between defect shape, size and position in relation to the ML surface and its scattering signal will be discussed. Furthermore, first results of a defect mapping algorithm are presented

Особенности аппаратной реализации алгоритмов вычисления контрольной суммы CRC32

Приведено описание аппаратных реализаций матричного и табличного алгоритмов вычисления контрольной суммы CRC32 на ПЛИС Cyclone фирмы Altera макета SDK-6.1. Показаны особенности аппаратной реализации на примере описания блоков вычисления CRC32 и работоспособность спроектированных устройств на конкретных примерах

Исследование системы РЗЭ (OH)3−NH4Cl при нагревании

The temporal evolution of neon pinch plasmas, generated in a 2kJ plasma focus device, has been investigated by x-ray spectroscopic methods for two sets of device parameters. These two sets lead to characteristic differences of the K-shell emission. Stationary models are shown to fail to explain the experimental observations even qualitatively. Transient spectra analysis shows that the characteristic differences observed can be referred to different transient modes of plasma dynamics. The spectra analysis includes beside resonance lines also dielectronic satellites and recombination continua. The results concerning the development of the plasma parameters achieved by the spectra modeling are supported by independent measurements of the time resolved K-shell emission and by optical streak images of the pinch plasma dynamics, which confirms the reliability of the transient spectroscopic analysis presented

\u3ci\u3e Glioblastoma derived exosomes contribute to tumor immune evasion \u3c/i\u3e

Glioblastoma multiforme (GBM) is the most frequent and lethal primary brain tumor in adults. Despite intense biomedical research, the median survival after diagnosis is 15 months. One factor contributing to this poor prognosis is the immune protection afforded by the tumor microenvironment. Tumors have a diverse repertoire of immune-evasive techniques. One method of evasion not well explored is the release of tumor-derived exosomes. Exosomes are tiny membrane-bound vesicles of endocytic origin that contain viable mRNA and functional proteins that can affect the physiology of recipient cells. Exosome release has been reported for numerous cancer types, including GBM. Exosomes from colon cancer have been shown to carry Fas ligand (FasL) and to induce apoptosis of activated T cells. The aim of this study was to elucidate whether the same immune-evasive technique is used in GBM. GBM exosomes were isolated from the serum-free culture medium of U87 MG and U138 MG cells by using differential ultracentrifugation and were then resuspended in phosphate-buffered saline. The protein concentration of the resulting exosome pellet was determined, and subsequent exosome treatments were based on protein concentration. A3T T cells were plated at a concentration of 10,000 cells per well in 96-well plates and were treated with quantified exosome fractions or with recombinant FasL, and T cell proliferation was determined. Our data demonstrated that tumor-derived exosomes significantly inhibited the proliferation of T cells and that the cellular inhibition resulting from the exosomes was comparable to that seen with the recombinant FasL. These results suggest that targeting FasL in GBM could greatly decrease the amount of immune suppression that occurs at the tumor site

Отказоустойчивый многофазный асинхронный электропривод с несинусоидальными токами

Рассмотрен принцип построения многофазного асинхронного электропривода, позволяющего при неоднократных отказах преобразователя частоты и двигателя обеспечить отказоустойчивое управление, на основе программируемых несинусоидальных токов с восстановлением работоспособности за счет активизации алгоритма восстановления в управляющем микроконтроллере. Приведены результаты моделирования для аварийной ситуации типа "обрыв фазы" для случая трехфазного двигателя с частичным восстановлением работоспособности асинхронного двигателя

Разработка теплообменного оборудования участка слива-налива нефтепродуктов Яйского НПЗ

В дипломном проекте рассмотрена установка слива-налива нефтепродуктов в железнодорожные вагоны-цистерны с разработкой теплообменного оборудования. В дипломном проекте рассмотрены различные конструкции теплообменного оборудования. Приведены расчеты основных технологических, конструктивных и прочностных показателей аппарата. Приведены расчеты основных технико-экономических показателей, выполнен годовой график Планово-предупредительных работ, по которым видно, что работа участка слива-налива нефтепродуктов эффективна и рентабельна.The setting of oil drain loading into railroad tanks with the development of heat transfer equipment and different constructions of the heat transfer equipment are considered in the diploma project. There are the calculations of the basic design, structural properties, technical and economic indicators in the diploma. The annual schedule of scheduled and preventative work is performed. It shows that the work of oil drain loading sector is effective and profitable. The diploma project contains the estimated explanatory note

Matrix metalloproteinase 9 modulates collagen matrices and wound repair

Animal science

Реинжиниринг процессов в отделе экономики и финансов Красноярского ЦФТО с использованием BestPractices

The development of new types of sophisticated soft x-ray sources requires the knowledge of their emission characteristics such as photon flux, spectral distribution, and size of the radiation source. Calibrated spectrographs for the soft x-ray region are needed to determine these properties. The components of a soft x-ray spectrograph consisting of a pinhole gold transmission grating and a charge coupled device (CCD) camera are calibrated at the radiometry laboratory of the Physikalisch-Technische Bundesanstalt using the synchrotron radiation facility BESSY. Two different kinds of CCD-based photon detectors (one thinned and back illuminated, one coated with a phosphorous layer) are compared with regard to their sensitivities in the spectral range between 50 eV and 1.7 keV. The results obtained for the thinned CCD are compared with theoretical calculations of the sensitivity