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Wyszukujesz frazę "Wang, S. M." wg kryterium: Wszystkie pola

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    Wyświetlanie 1-6 z 6
    Tytuł:
    Genetic analysis of 38 double-flowered amaryllis (Hippeastrum hybridum) cultivars based on SRAP markers
    Autorzy:
    Xiong, M.
    Yang, S.
    Wang, Y.
    Chen, D.
    Wang, X.
    Zhou, D.
    Wei, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/12994499.pdf
    Data publikacji:
    2021
    Wydawca:
    Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
    Źródło:
    Acta Scientiarum Polonorum. Hortorum Cultus; 2021, 20, 3; 15-25
    1644-0692
    Pojawia się w:
    Acta Scientiarum Polonorum. Hortorum Cultus
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Moving-aperture-based three-dimensional micro-measurement system
    Autorzy:
    Fan, S.
    Yu, M.
    Jiang, G.
    Wang, Y.
    Wang, W.
    Li, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/174026.pdf
    Data publikacji:
    2018
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    optical microscopy
    computational photography
    three-dimensional micro-measurement
    moving aperture
    Opis:
    To overcome the depth-of-field limitation of an optical microscope image, a three-dimensional measurement method with a superior depth-of-field is proposed. In the proposed method, light-field information of different angles is obtained by moving the aperture and the three-dimensional scene is reconstructed by using a computational reconstruction technology. First, stereo matching of different aperture position images is performed to obtain the multi-aperture imaging deviation. The focal plane moving distance is thereby estimated. Then, the relational expression between the image coordinates and the focal plane moving distance is determined according to the image coordinates. Two dimensional coordinates of the space point are obtained by the expression coefficients. Finally, the depth coordinates are computed, and three-dimensional reconstruction of the spatial points is completed. Experiments of three-dimensional measurements of the calibration board with different angles and circuit boards are conducted. The results show that the maximum error of the distance measurement is controlled into 0.84%, and the maximum angle measurement error is controlled into 4.56%.
    Źródło:
    Optica Applicata; 2018, 48, 4; 533-547
    0078-5466
    1899-7015
    Pojawia się w:
    Optica Applicata
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Role of dissolved mineral species in quartz flotation and siderite solubility simulation
    Autorzy:
    Luo, X.
    Wang, Y.
    Ma, M.
    Song, S.
    Zhang, Y.
    Deng, J.
    Liu, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/109459.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    quartz
    solubility
    siderite
    calcium ion
    temperature
    flotation
    Opis:
    Quartz is, in most cases, the major gangue mineral found in the iron ores. Although it can be activated by calcium at strong alkaline pH, quartz nevertheless, reports to the concentrate with Fe when the iron ores contain siderite. It causes a poor concentrate grade and separation between quartz and iron minerals. The effect of siderite on reverse anionic flotation of quartz from hematite was studied in our previous investigations. In this work, the effect of siderite dissolution on the quartz recovery in the froth product and the effect of pH, ions and temperature on siderite dissolution were investigated. Microflotation, PHREEQC simulation, solution chemistry calculation and Fourier transform infrared spectroscopy (FTIR) measurements were conducted. It was observed that the dissolved species of siderite exhibited negative impact on quartz flotation. This influence became weak to some extent by either stripping the dissolved species or shortening dissolution time. Siderite was easily dissolved in the presence of calcium ion under strong alkaline conditions and its solubility increased with increasing the calcium ion concentrate and temperature. When the calcium ion was added as an activator of quartz under strong alkaline conditions (pH>9.96), calcium existed mainly in the CaCO3 precipitation form according to the solubility rule in the presence of siderite. This form could adsorb onto quartz surfaces and further the chemical reaction between starch and quartz was monitored by FTIR measurements. This study provides a further supplement for previous study. A potential strategy is suggested that finding a collector used at low temperature or flotation under neutral (or weak alkaline) medium is helpful to the reverse flotation of iron ores containing siderite.
    Źródło:
    Physicochemical Problems of Mineral Processing; 2017, 53, 2; 1241-1254
    1643-1049
    2084-4735
    Pojawia się w:
    Physicochemical Problems of Mineral Processing
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A super depth of field height measurement based on local disparity
    Autorzy:
    Cui, L.
    Liu, Y.
    Yu, M.
    Jiang, G.
    Fan, S.
    Wang, Y.
    Powiązania:
    https://bibliotekanauki.pl/articles/173522.pdf
    Data publikacji:
    2015
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    microscopes
    binocular vision
    local disparity map
    depth of field (DOF)
    height measurement
    Opis:
    A super depth of field height measurement method is proposed to measure the object height with the optical stereoscopic microscope. The quasi-Euclidean epipolar rectification algorithm is utilized on the original stereoimage to obtain rectified stereoimages and calibrate two camera parameters. Then, feature points are obtained by the SURF (speed up robust feature) algorithm and their corresponding disparities are calculated. The disparity-depth of field curve is fitted by combining the step height values of a stepper motor. Moreover, through local disparity value got from feature points on the object, the relative shift height is calculated through regression analysis. Finally, according to binocular vision geometry, the thickness of the object can be calculated. Experimental results show that the measurement error in Z direction is from 1.51% to 7.71%, which indicates that the proposed method is able to measure the height of a microobject beyond depth of field within a tolerant error.
    Źródło:
    Optica Applicata; 2015, 45, 2; 205-214
    0078-5466
    1899-7015
    Pojawia się w:
    Optica Applicata
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparative investigations of nonlinear and linear observers for a highly manoeuvrable target in sliding mode guidance
    Autorzy:
    Wang, Y.
    Sun, M.
    Du, S.
    Chen, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/201020.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    guidance law
    second-order sliding mode
    super-twisting algorithm
    linear observer
    target manoeuvre
    algorytm
    obserwator liniowy
    manewr
    algorytm przesuwania
    Opis:
    Target manoeuvre is one of the key factors affecting guidance accuracy. To intercept highly maneuverable targets, a second-order sliding-mode guidance law, which is based on the super-twisting algorithm, is designed without depending on any information about the target motion. In the designed guidance system, the target estimator plays an essential role. Besides the existing higher-order sliding-mode observer (HOSMO), a first-order linear observer (FOLO) is also proposed to estimate the target manoeuvre, and this is the major contribution of this paper. The closed-loop guidance system can be guaranteed to be uniformly ultimately bounded (UUB) in the presence of the FOLO. The comparative simulations are carried out to investigate the overall performance resulting from these two categories of observers. The results show that the guidance law with the proposed linear observer can achieve better comprehensive criteria for the amplitude of normalised acceleration and elevator deflection requirements. The reasons for the different levels of performance of these two observer-based methods are thoroughly investigated.
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2017, 65, 2; 233-245
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    17 beta-estradiol affects proliferation and apoptosis of canine bone marrow mesenchymal stem cells in vitro
    Autorzy:
    Zhou, Z.-H.
    Gu, C.-W.
    Li, J.
    Huang, X.-Y.
    Deng, J.-Q.
    Shen, L.-H.
    Cao, S.-Z.
    Deng, J.-L.
    Zuo, Z.-C.
    Wang, Y.
    Ma, X.-P.
    Ren, Z.-H.
    Yu, S.-M.
    Powiązania:
    https://bibliotekanauki.pl/articles/2087308.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    apoptosis
    bone marrow mesenchymal stem cells (BMSCs)
    canine
    proliferation
    17 beta-estradiol (E2)
    Źródło:
    Polish Journal of Veterinary Sciences; 2020, 23, 2; 235-245
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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