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Wyszukujesz frazę "Lv, J.-F." wg kryterium: Autor

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    Wyświetlanie 1-5 z 5
    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:
    Fast and effective extraction for equivalent shunt resistances of triple-junction concentrator solar cells
    Autorzy:
    Lv, H
    Dai, J
    Sheng, F
    Liu, W
    Ma, X
    Cheng, C
    Lv, Q
    Powiązania:
    https://bibliotekanauki.pl/articles/174425.pdf
    Data publikacji:
    2015
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    concentrator photovoltaic
    triple junction solar cell
    equivalent shunt resistance
    Opis:
    Fast and effective extraction of equivalent shunt resistance for each subcell of GaInP/GaInAs/Ge triple-junction concentrator solar cells is presented. The two-diode model of single junction was introduced to establish the equivalent circuit of triple-junction solar cells. The current-voltage characteristic of the triple-junction solar cells was measured under AM1.5D spectrum, C = 576 and T = 303 K. Equivalent shunt resistance of each subcell was extracted from its estimated current-voltage curve. The estimated current-voltage curve of the triple-junction solar cells shows a good agreement with the experimental data in 0.31% deviation. The degradation in the equivalent shunt resistance for Ge subcell was intentionally introduced to indicate the mechanism of current-matching operation for different subcells, with the maximum output power of the triple-junction solar cells deteriorating from 3.5 to 3.17 W. The results can offer performance analysis and optimum design of photovoltaic applications.
    Źródło:
    Optica Applicata; 2015, 45, 2; 227-235
    0078-5466
    1899-7015
    Pojawia się w:
    Optica Applicata
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Emergence and complete genome of Senecavirus A in pigs of Henan Province in China, 2017
    Autorzy:
    Wang, H.B.
    Tian, B.
    Lv, H.L.
    Wang, F.
    Zhang, T.
    Wang, C.Y.
    Zhang, Y.D.
    Dong, J.J.
    Powiązania:
    https://bibliotekanauki.pl/articles/2087575.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Senecavirus A
    vesicular disease
    phylogenetic analysis
    Źródło:
    Polish Journal of Veterinary Sciences; 2019, 1; 187-190
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Efficient sulfidization of lead oxide at high temperature using pyrite as vulcanizing reagent
    Autorzy:
    Zheng, Y.-X.
    Lv, J.-F.
    Wang, H.
    Wen, S.-M.
    Huang, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/110351.pdf
    Data publikacji:
    2018
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    lead oxide
    sulfidization roasting
    pyrite
    reaction mechanism
    TG
    Opis:
    A sulfidization roasting-flotation process was usually viewed to be effective in treating the refractory oxide ore. In this paper, pyrite was proposed to be applied as a potential vulcanizing reagent to transform PbO or its surface to PbS based on feasibilities of technology and economy. The evolution process, phase and characteristics of crystal growth were investigated by TG, XRD and SEM-EDS, respectively, to interpret the interaction mechanism of lead oxide and pyrite at high temperature. It was found that the decomposition process of pyrite under argon atmosphere was a slow process of sulfur released from FeS2 to FexS, which made the process easier to be controlled. When PbO was introduced into the system, the initial solid-solid (PbO-FeS2) reaction and prevailing solid-gas (PbO-S2(g)) reaction occurred at about 500 °C and 700 °C, respectively. Combined with the SEM-EDS analyses results, the optimal temperature for the sulfidization of PbO should be in the range of 700-750 °C.
    Źródło:
    Physicochemical Problems of Mineral Processing; 2018, 54, 2; 270-277
    1643-1049
    2084-4735
    Pojawia się w:
    Physicochemical Problems of Mineral Processing
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    An innovative technology for recovery of zinc, lead and silver from zinc leaching residue
    Autorzy:
    Zheng, Y.-X.
    Lv, J.-F.
    Liu, W.
    Qin, W.-Q.
    Wen, S.-M.
    Powiązania:
    https://bibliotekanauki.pl/articles/110688.pdf
    Data publikacji:
    2016
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    zinc leaching residue
    lead sulfate
    zinc sulfate
    reduction roasting
    flotation
    Opis:
    Zinc leaching residue is a good source of zinc and has a great potential to be utilized. However, it is very difficult to recover lead, zinc and silver from the residue by traditional technologies. In this study, a new technology based on conversions of PbSO4 and ZnSO4 in the residue to their respective sulfides by reduction roasting with coal powder followed by a flotation treatment was developed. The effects of roasting temperature, coal dosage, reaction time and pyrite dosage were investigated at a laboratory scale. The results showed that the conversion extent of PbSO4 and ZnSO4 under the optimal experimental conditions was 71.89 and 69.76%, respectively. A flotation concentrate containing 39.13% Zn, 6.93% Pb and 973.54 g/Mg Ag was obtained from the treated material, and the recovery of Zn, Pb and Ag was 48.38, 68.23 and 77.41%, respectively. The tailing containing ZnFe2O4 or Fe3O4 could be either stockpiled or further disposed.
    Źródło:
    Physicochemical Problems of Mineral Processing; 2016, 52, 2; 943-954
    1643-1049
    2084-4735
    Pojawia się w:
    Physicochemical Problems of Mineral Processing
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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