Browsing 2016 by Submit Date
Now showing items 81-100 of 151
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Goodput analysis of a modified cumulative ARQ in IEEE 802.16M
(БНТУ, 2016)For the wireless channel characteristics, this paper modifies the cumulative ARQ in order to improve the performance of the traditional cumulative ARQ. We put in sequence confirmed feedback to satisfy the demands of the new generation cellular mobile communication. According to the advantages for reliability and high data rate transmission of the IEEE 802.16m networks, the ...2018-04-13 -
Клинические аспекты применения чистого титана в реконструктивной хирургии травматических дефектов костей лицевого и мозгового черепа
(БНТУ, 2016)In recent decades, a trend of annually growth in the number of patients with defects of facial skull and cerebral cranium as a result of serious concomitant craniofacial injuries has been emerged. Clinical material is presented by 53 patients in the period of 1985-2008. A technology of fixation of perforated implants of clear titanium by titanium screws was used during reconstructive ...2018-04-13 -
Изучение эффективности стабилизации композитов на основе полиэтилена, содержащих суперконцентраты наполнителей
(БНТУ, 2016)The article presents the influence of joint and separate reference of fillers (TALC MB, VC PE 175) and stabilizers (RA10) masterbatches on the thermal aging of polyethylene’s composites. It was estimated the thermal stability of polyethylene compositions. The activation energy of thermal oxidative degradation of polyethylene compositions was calculated. Compositions with high ...2018-04-18 -
Разработка ускоренной программы оценки старения и разрушения лакокрасочных покрытий, нанесенных на подземные трубопроводы тепловых сетей
(БНТУ, 2016)Аccelerated test program of coating age evaluation have developed. A main target of the program was selection the most rust-resistant protective coating for underground piping of heating network in Belarus weather conditions. Thermostability, thermo and humidity resistance, corrosion environ-ment resistance were the basic selection criteria.2018-04-18 -
Электрофизические свойства имплантированных ионами металлов фоторезистов в СВЧ диапазоне
(БНТУ, 2016)The studies by EPR contactless electrical properties of nanocomposites photoresist in the microwave range of the following results: the maximum ohmic losses are observed for samples at 1.0 × 1017 cm-2, for nickel ions, and iron ions; detected conductivity anisotropy implanted films in the magnetic field.2018-04-18 -
Silicates of alkaline-earth elements activated RRe-ions – promising materials for scintillation and luminescences applications
(БНТУ, 2016)The composition of the glass scintillation materials was elaborated. The effects of rare earth ions upon spectral and luminescent properties of the glasses and glass ceramics were established.2018-04-18 -
Диффузионно-легированные сплавы из металлических отходов производства с пониженной температурой плавления для получения износостойких покрытий индукционной наплавкой токами высокой частоты
(БНТУ, 2016)The article reveals the technology of obtaining diffusively alloyed compounds made of metal discard and gives the information concerning the influence of preliminary short term high temperature processing with concentrated energy sources on structure formation within the further induction hard-facing process. A mechanism of a contact eutectic melting in a diffusively alloyed ...2018-04-18 -
Технология получения комбинированной электропроводящей пряжи для ковровых изделий
(БНТУ, 2016)The new technology of manufacturing of fleecy conductive yarn at modernized doubling-twisting machine K-176-2 was developed by specialists of TTM department at the enterprise “Vitebsk carpets”. The using in the carpets of fleecy conductive yarns allows to improve electro-physical characteristics of carpets: to low their specific electrical surface resistance and the level of ...2018-04-18 -
Особенности изнашивания ледебуритных сталей при плакированни контактной поверхности сплавами, обладающими эффектом сверхпластичности
(БНТУ, 2016)The paper studied the process of cladding alloy based on Sn-Pb surface layer of high-alloy tool steels. It is shown that the use of plating can improve resistance steels HSS6-5-2 and X155CrMoV12-1 to the effects of pulsating contact stresses.2018-04-18 -
Синтез анизотропных соединений
(БНТУ, 2016)Continuing our interest in the intermediates for the preparation of liquid-crystalline and anisotropic compounds for different practical application, we summarize and show here how the advanced both nonchiral and chiral nematic, smectic and other anisotropic compounds can be successfully synthesized by the transformations of the available 3,6-disubstituted cyclohex-2-enones, ...2018-04-18 -
Разработка составов и технологии получения теплоизолирующих покрытий для оборудования, работающего при высоких температурах
(БНТУ, 2016)Long-term researches of granulate heat-insulating materials are carried out at the department of technology of glass and ceramics. The results of it researches is waterproof silicate granulated foam-made material with microcellular structure and it bulk weight is 150–250 kg/m3. This material is used as excipient for producing a flameproof heat-insulating coating of the equipment ...2018-04-18 -
Совершенствование химических составов нейтральных стекол для медицинской стеклотары
(БНТУ, 2016)In the manufacture of medical vials borosilicate glasses based on a problem that is connected with the hydrolytic stability of these glasses. The output corresponding to the requirements of the product does not exceed 12–15%. Attempts to control temperature and time molding bottles regimes have not led to an improvement in product quality. At the Department of Glass and Ceramics ...2018-04-18 -
Структурные исследования пленок теллурида кадмия, выращенных на подложках монокристаллического теллурида кадмия и кремния
(БНТУ, 2016)The results of atomic-fource and scan electron microscopy of cadmium telluride films prepared on silicon and cadmium telluride substrates by means of sputtering in cvasi-closed volume are presented. It is shown that roughnes of the films change in the range 34 – 87 nm with mean grain size ranging in the interval 2.5 – 5 μm.2018-04-18 -
Способ обеспечения качественной лицевой поверхности железобетонных плит пустотного настила
(БНТУ, 2016)The most important task in the manufacture of concrete structures and products to provide the required quality of the front surface of the finished product. Currently, there are quite a number of ways to improve the quality of concrete products and structures surface. One of these ways is isolated unit of the underlying layer in reinforced concrete and concrete structures.2018-04-18 -
Управление оптическими свойствами поверхностных наноструктур серебра
(БНТУ, 2016)Optical properties for different shape nanoparticles are compared for nanostructures on the glass substrate in the air atmosphere. The influence of the nanoparticle aspect ratio on the properties of the optical extinction spectrum of 2D-nanoarray. In general, the possibility of the optical spectral properties manipulation by means of the control of the nanoparticles shape, surface ...2018-04-18 -
Бетоны, модифицированные отходами производства предприятий города Гродно
(БНТУ, 2016)The article presents the results of studies of physical and mechanical and performance properties of concrete, modified by crushed granite waste and waste of chemical industries. As a result of experiments in laboratory of Yanka Kupala State University of Grodno was obtained concrete with improved properties: compressive strength, water absorption, durability, porosity.2018-04-18 -
Оценка свойств текстильных материалов с нановолокнистыми покрытиями, полученными методом электроформования
(БНТУ, 2016)The objective of the investigation was determination of properties of textile materials with nanofibrous web. Solution of polymer composition was used as the raw material for fibers molding. Experimental research of the technological process of electrospinning was carried out on the equipment Nanospider. As a results of experiments series it was determined the physics and mechanics ...2018-04-18 -
Серный бетон: преимущества и недостатки
(БНТУ, 2016)In article analyzed possibility of use of sulphur as binding substance in building materials. The analysis of positive and negative qualities of sulfuric concrete, advantage of the production technology of sulfuric concrete is made.2018-04-18 -
Перспективные строительные материалы, получаемые на основе доломита
(БНТУ, 2016)The thesis provides an overview of the application of dolomite raw material for producing a magnesia astringent. Studies performed in the Hrodna State University, have shown the ability to create materials based on magnesia dolomite sand grain size of 1.25-2.5 mm and a mixing which is obtained as a by-product in the manufacture of plaster. In addition, the author of dolomite raw ...2018-04-18 -
Теплоаккумулирующие материалы с изменяемым фазовым состоянием: основные характеристики и области применения
(БНТУ, 2016)The article provides the definition of "phase change material". Noted that as materials with change phase, with thermoregulation properties, are preferably used paraffin’s. The use of microencapsulation technology allows you to effectively use the phase change materials in various fields. The most commonly used PCM in building, in the manufacture of upholstered furniture and ...2018-04-18