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    Wyświetlanie 1-11 z 11
    Tytuł:
    Thermally induced damage in hexanitrohexaazaisowurtzitane
    Autorzy:
    Tian, Q.
    Yan, G.
    Sun, G.
    Huang, C.
    Xie, L.
    Chen, B.
    Huang, M.
    Li, H.
    Liu, X.
    Wang, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/358735.pdf
    Data publikacji:
    2013
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
    Tematy:
    CL-20
    SAXS
    AFM
    thermal effects
    voids
    Opis:
    The evolution of the microstructure of hexanitrohexaazaisowurtzitane (CL-20) after a thermal stimulus plays a key role in the performance of CL-20. In the current work, microstructural variations of CL-20 caused by thermal treatment were investigated by X-ray diffraction, in situ variable-temperature optical microscopy, atom force microscopy, and small-angle X-ray scattering. A wave-like process, an abrupt volume expansion, movement, and fragmentation of CL-20 particles during phase transition were observed. After the phase transition (160 °C) the CL-20 sample acquired a very rough surface with numerous dimple depressions, and during the thermal decomposition stage (200 °C) a large number of voids were produced in both the bulk and the surface of the CL-20.
    Źródło:
    Central European Journal of Energetic Materials; 2013, 10, 3; 359-369
    1733-7178
    Pojawia się w:
    Central European Journal of Energetic Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Design and the First Test Results of a Fast LTD Stage
    Autorzy:
    Chen, L.
    Zhou, L.
    Zou, W.
    Ren, J.
    Li, Y.
    Wu, S.
    Xie, W.
    Feng, S.
    Deng, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1807988.pdf
    Data publikacji:
    2009-06
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    84.70.+p
    52.75.Kq
    84.60.Ve
    Opis:
    Linear transformer driver stages are designed to be used as a primary energy storage in high power pulsed generators. In this report, the design and test results of the linear transformer driver stage prototype that delivers ≈100 kA fast pulse with 133 ns FWHM into a ≈0.87 Ω resistive load are described. This stage consists of 20 (100 kV, 20 nF) storage capacitors that are arranged in 10 identical bricks located evenly around the axis of the stage. Each brick contains two capacitors, a multi-gap switch, and the output connector that transfers the energy to the resistive load. The outer diameter of the stage is ≈1.5 m, at a length of ≈20 cm. The stage is developed to demonstrate the possibility of the fast linear transformer driver technology to create high power pulsed generators.
    Źródło:
    Acta Physica Polonica A; 2009, 115, 6; 1186-1188
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Synthesis and Characterization of a High Energy Combustion Agent (BHN) and Its Effects on the Combustion Properties of Fuel Rich Solid Rocket Propellants
    Autorzy:
    Pang, W.-Q.
    Zhao, F.-Q.
    Xue, Y.-N.
    Xu, H.-X.
    Fan, X.-Z.
    Xie, W.-X.
    Zhang, W.
    Lv, J.
    Deluca, L. T.
    Powiązania:
    https://bibliotekanauki.pl/articles/358474.pdf
    Data publikacji:
    2015
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
    Tematy:
    fuel rich solid propellant
    BHN
    DSC
    TG-DTG
    burning rate
    combustion properties
    Opis:
    A high energy combustion agent (tetraethylammonium decahydrodecaborate, BHN) was prepared by means of an ion exchange reaction (IER), and the prepared samples were characterized by the advanced diagnostic techniques of Scanning Electron Microscopy (SEM), X-ray diffraction (XRD), Thermogravimetric Analysis (TGA), and Differential Scanning Calorimetry (DSC) etc. The effects of BHN particles on the hazard and combustion properties of fuel rich solid propellants were investigated. The results showed that the BHN samples and fuel rich propellants containing BHN particles can be prepared successfully and solidified safely. The peak temperature of thermal decomposition and the heat of decomposition of the BHN samples prepared were 305.8 °C and 210.9 J•g-1 at a heating rate of 10 K•min-1, respectively. The burning rate and pressure exponent of fuel rich solid propellants decreases with increases in the fraction of BHN particles in the propellant formulation. Compared with the reference formulation (sample BP-1), the burning rate of the propellant with 10% mass fraction of BHN particles (sample BP-4) had decreased 30% at 3.0 MPa, and the pressure exponent had dropped from 0.44 to 0.41.
    Źródło:
    Central European Journal of Energetic Materials; 2015, 12, 3; 537-552
    1733-7178
    Pojawia się w:
    Central European Journal of Energetic Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Parameter calibration for the discrete element simulation model of commercial organic fertilizer
    Autorzy:
    Xie, C.
    Yang, J.
    Wang, B.
    Zhuo, P.
    Li, C.
    Wang, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/2082983.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Instytut Agrofizyki PAN
    Tematy:
    commercial organic fertilizer
    discrete element
    repose angle
    parameter calibration
    parameters for the particle
    model
    Opis:
    The parameters of a discrete element simulation model for commercial organic fertilizer particles were obtained both quickly and accurately, so that the uniformity and stability of the fertilizer discharged from the feeder may be studied using the discrete element simulation method. This study screened out the parameters which significantly influenced the repose angle of the commercial organic fertilizer using the Plackett-Burman test. Then, a model for the quadratic regression response surface of the repose angle vs the parameters was established through a Box-Behnken experiment with the measured repose angle of the fertilizer particles as the optimization index. The optimization results showed that the rolling friction coefficient and static friction coefficient between the fertilizer particles, as well as the optimal simulation parameter for the Johnson-Kendall-Roberts surface energy were 0.056, 0.355 and 0.011 J m-2, respectively. A discrete element simulation test was carried out with the optimal simulation parameters, and the repose angle error of the simulation test was found to be 0.40% relative to that of the physical test, which proved the accuracy and validity of the simulation parameters for the discrete element model of the organic fertilizer. The simulation results may provide the basic parameters for establishing a discrete element model of commercial organic fertilizer particles and investigating the performance of organic fertilizer feeders using the simulation method.
    Źródło:
    International Agrophysics; 2021, 35, 1; 107-117
    0236-8722
    Pojawia się w:
    International Agrophysics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Noise Elimination of Reciprocating Compressors Using FEM, Neural Networks Method, and the GA Method
    Autorzy:
    Chang, Y.-C.
    Chiu, M.-C.
    Xie, J.-L.
    Powiązania:
    https://bibliotekanauki.pl/articles/178126.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    finite element method
    polynomial neural network model
    genetic algorithm
    group method of data handling
    reciprocating compressor
    optimization
    Opis:
    Industry often utilizes acoustical hoods to block noise emitted from reciprocating compressors. However, the hoods are large and bulky. Therefore, to diminish the size of the compressor, a compact discharge muffler linked to the compressor outlet is considered. Because the geometry of a reciprocating compressor is irregular, COMSOL, a finite element analysis software, is adopted. In order to explore the acoustical performance, a mathematical model is established using a finite element method via the COMSOL commercialized package. Additionally, to facilitate the shape optimization of the muffler, a polynomial neural network model is adopted to serve as an objective function; also, a Genetic Algorithm (GA) is linked to the OBJ function. During the optimization, various noise abatement strategies such as a reverse expansion chamber at the outlet of the discharge muffler and an inner extended tube inside the discharge muffler, will be assessed by using the artificial neural network in conjunction with the GA optimizer. Consequently, the discharge muffler that is optimally shaped will decrease the noise of the reciprocating compressor.
    Źródło:
    Archives of Acoustics; 2017, 42, 2; 189-197
    0137-5075
    Pojawia się w:
    Archives of Acoustics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Development of a blocking immunoperoxidase monolayer assay for differentiation between pseudorabies virus-infected and vaccinated animals
    Autorzy:
    Wang, Y.B.
    Li, Y.H.
    Li, Q.M.
    Xie, W.T.
    Guo, C.L.
    Guo, J.Q.
    Deng, R.G.
    Zhang, G.P.
    Powiązania:
    https://bibliotekanauki.pl/articles/2087396.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    pseudorabies virus variant strains
    anti-pseudorabies virus monoclonal antibody
    blocking immunoperoxidase monolayer assay
    differentiation between pseudorabies virus-infected and vaccinated animals
    Źródło:
    Polish Journal of Veterinary Sciences; 2019, 4; 717-723
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Design and experiments using a spiral-liquid-solid fluidized bed system
    Autorzy:
    Sha, J.
    Liang, L.
    Liu, B.
    Xie, G.
    Peng, Y.
    Powiązania:
    https://bibliotekanauki.pl/articles/110520.pdf
    Data publikacji:
    2015
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    liquid-solid fluidized bed
    spiral unit
    coal separation
    water quantity
    Opis:
    Liquid-solid fluidized bed (LSFB) has been widely known and used for separation of coarse coal particles (normally larger than 0.25 mm). The process of separation by LSFB needs fluidization water from the bottom to the top of LSFB. The fluidization water is formed by the water addition at the bottom of the LSFB. Normally the quantity of water addition is very large, which increases the burden of water treatment in coal preparation processes. In this investigation, a spiral unit was introduced into the conventional LSFB and the new separation equipment was named S-LSFB. The spiral unit could provide an upward force for the upward movement of coarse low density coals into the concentrate, and hence the quantity of water addition for fluidization water may be reduced. Samples of 0.5-0.25 mm size fraction coal were used to investigate the difference in separation performance between S-LSFB and LSFB. It was found that the separation performance of S-LSFB was nearly equal to that of LSFB. S-LSFB may be beneficial to coarse coal separation in coal preparation plant since the burden of water treatment can be reduced by the application of S-LSFB.
    Źródło:
    Physicochemical Problems of Mineral Processing; 2015, 51, 2; 427-434
    1643-1049
    2084-4735
    Pojawia się w:
    Physicochemical Problems of Mineral Processing
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Construction of a recombinant baculovirus expressing swine hepatitis E Virus ORF2 and preliminary research on its immune effect
    Autorzy:
    Yang, Z.
    Wang, K.
    Hu, Y.
    Yuan, P.
    Yang, Y.
    Xie, L.Y.
    Huang, S.L.
    Liu, J.
    Ran, L.
    Song, Z.H.
    Powiązania:
    https://bibliotekanauki.pl/articles/2087759.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    swine HEV
    ORF2
    baculovirus
    immunogenicity
    Źródło:
    Polish Journal of Veterinary Sciences; 2018, 21, 1; 47-54
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Catalytic decomposition of toluene over La1-xSr xMnO3/palygorskite synthesized catalysts
    Autorzy:
    Song, L.
    Chen, T.
    Chen, D.
    Chen, Y.
    Xie, J.
    Liu, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/207996.pdf
    Data publikacji:
    2013
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    catalysts
    manganese
    manganese oxide
    toluene
    transmission electron microscopy
    X ray diffraction
    Palygorskite
    katalizatory
    mangan
    tlenek manganu
    toluen
    transmisyjna mikroskopia elektronowa
    dyfrakcja promieniowania rentgenowskiego
    Opis:
    Palygorskite (PG) supported La1-xSrxMnO3 catalysts were fabricated by copreripitation. The catalysts were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), specific surface area (SSA) and H2 temperature programmed reduction (H 2-TPR). Catalytic activity for VOCs was examined by using toluene as a model compound. The results show that the surface area as well as mechanical strength of catalysts increase substantially after catalysts loaded in PG. XRD patterns show that after calcination at 700 0C, PG as a support in 9% LaMn03/PG and 9% La0.7Sr0.3MnO3/PG was transformed into amorphous phase and the morphology was not destroyed. It was well established that the main reductive components are factually Mn(III) or Mn(IV) oxides in catalysts based on the results of TPR. It was also found that Mn(IV) increases while Mn(III) reduces responding with the increasing amount of Sr. Toluene conversion rate of as-preparedμ% La1-xSr xMnO3/PG increases with the increasing values of x and μ when x=0-0.3 and μ = 3-9%. Toluene can be converted completely at 285 0C by 9% La0.7Sr0.3MnO3/PG catalyst while no significant change was observed after addition on the doping and loading amount of Sr. During a 100 h stability experiment of 9% La 0.7Sr0.3MnO3/PG catalyst, toluene removal was found to be above 95%.
    Źródło:
    Environment Protection Engineering; 2013, 39, 3; 31-42
    0324-8828
    Pojawia się w:
    Environment Protection Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Adsorption efficiency of pentafluorobenzene on ionic liquids-based silicas
    Autorzy:
    Wang, X.
    Lin, L.
    Xie, J.
    Yan, X.
    Xiao, W.
    Tian, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/778559.pdf
    Data publikacji:
    2018
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    ionic liquids based silica
    pentafl uorobenzene
    adsorption
    solid-phase extraction
    Opis:
    The adsorption of pentafl uorobenzene on nine ionic liquid-based silicas was investigated using solid phase extraction. The effects of several variables such as the type of ionic liquid groups, adsorption time, temperatures and water ratio in the solution system were experimentally evaluated. The imidazole-chloride ionic liquid group based silica exhibited the highest adsorption efficiency under the optimized conditions of 5 min adsorption at 30°C in water/methanol (30:70, vol%) solution. In addition, the effects of pH, as well as type and concentrations of chloride salts were investigated. At pH values other than neutral and high salt concentration, the adsorption efficiency was reduced. Finally, the relative standard deviation of less than 5.8% over a 5-day period showed a high precision for the nine tested sorbents.
    Źródło:
    Polish Journal of Chemical Technology; 2018, 20, 3; 47-52
    1509-8117
    1899-4741
    Pojawia się w:
    Polish Journal of Chemical Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ab Initio Study of He Migrations in Fcc Au-Ag Alloys
    Autorzy:
    Zhu, Z.
    Zhang, Y.
    Xie, J.
    Yang, L.
    Nie, J.
    Zu, X.
    Powiązania:
    https://bibliotekanauki.pl/articles/1398923.pdf
    Data publikacji:
    2016-06
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    66.30.J-
    81.05.Bx
    71.15.Mb
    Opis:
    Ab initio calculations based on the density functional theory have been performed to investigate the migrations of interstitial helium (He) atoms in Au-Ag alloys with two different mass ratios (Au₃Ag₂ and AuAg). The results show that the migration mechanisms of He atoms mainly depend on the crystal structures of alloys, and their migration energy barriers are affected by the migration paths in Au-Ag alloys. He interstitials preferentially occupied the most stable sites, but it is difficult for He interstitials to migrate to nearest most stable sites via second stable positions at room temperature. When He atom is at the tetrahedral position which has higher formation energy, it possibly migrates to nearest tetrahedral positions directly for AuAg alloy. In addition, comparing the migration of He defects in the two alloys, we found that the properties of migration energy and relative stability of He atoms probably slightly depend on the mass-density of Au-Ag alloys.
    Źródło:
    Acta Physica Polonica A; 2016, 129, 6; 1151-1154
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-11 z 11

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