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    Wyświetlanie 1-6 z 6
    Tytuł:
    Soil aggregate size distribution and total organic carbon in intra-aggregate fractions as affected by addition of biochar and organic amendments
    Autorzy:
    Odugbenro, G.O.
    Liu, Z.
    Sun, Y.
    Powiązania:
    https://bibliotekanauki.pl/articles/971185.pdf
    Data publikacji:
    2020
    Wydawca:
    Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej
    Tematy:
    biochar
    aggregate stability
    microbial biomass carbon
    total organic carbon
    Opis:
    A two-year field trial on maize (Zea mays L.) production was established to determine the influence of biochar, maize straw, and poultry manure on soil aggregate stability, aggregate size distribution, total organic carbon (TOC), and soil microbial biomass carbon (MBC). Seven treatments with four replications, namely CK, control; S, 12.5 Mg ha-1 straw; B 1 , 12.5 Mg ha-1 biochar; B 2 , 25 Mg ha-1 biochar; SB 1 , straw + 12.5 Mg ha-1 biochar; SB 2 , straw + 25 Mg ha-1 bio- char; and M, 25 Mg ha-1 manure were tested at four soil depths (0–10, 10–20, 20–30, and 30–40 cm). Aggregates were grouped into large macro-aggregates (5–2 mm), small macro-aggregates (2–0.25 mm), micro-aggregates (0.25–0.053 mm) and silt + clay (<0.053 mm). Biochar, straw, and manure applications all had significant effects (p < 0.05) on aggregate stability, with B 2 at 20 cm soil depth showing the greatest increase (62.1%). SB 1 of small macro-aggregate fraction showed the highest aggregate proportion (50.59% ± 10.48) at the 20–30 cm soil depth. The high- est TOC was observed in SB 2 (40.9 g kg-1) of large macro-aggregate at 10–20 cm soil depth. Treat- ment effects on soil MBC was high, with B 1 showing the greatest value (600.0 µg g-1) at the 20–30 cm soil depth. Our results showed that application of biochar, straw, and manure to soil increased aggregate stability, TOC as well as MBC.
    Źródło:
    Polish Journal of Soil Science; 2020, 53, 1
    0079-2985
    Pojawia się w:
    Polish Journal of Soil Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wavelength-sensitive-function-based spectral reconstruction using segmented principal component analysis
    Autorzy:
    Wu, G.
    Shen, X.
    Liu, Z.
    Zhang, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/174199.pdf
    Data publikacji:
    2016
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    spectral reconstruction
    wavelength-sensitive function
    segmented principal component analysis
    Opis:
    Spectral images provide richer information than colorimetric images. A high-dimensional spectral data presents a challenge for efficient spectral reconstruction. In conventional reconstruction methods it is very difficult to obtain good spectral and colorimetric accuracy simultaneously. In this paper, a segmented principal component analysis (SPCA) method and a weighted segmented principal component analysis (wSPCA) method are proposed for efficient reconstruction of spectral color information. The methods require, firstly, partitioning the complete spectrum of wavelengths into two subgroups, considering the sensitivity of human visual system. Then the classical principal component analysis (PCA) carried out each subgroup of data separately. The results indicated that the spectral and colorimetric accuracy of the SPCA and wSPCA outperformed the PCA and weighted PCA, and wSPCA clearly retained more color visual information.
    Źródło:
    Optica Applicata; 2016, 46, 3; 365-374
    0078-5466
    1899-7015
    Pojawia się w:
    Optica Applicata
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A simple model of the scanning near-field optical microscopy probe tip for electric field enhancement
    Autorzy:
    Wang, Y.
    Cai, W.
    Yang, M.
    Liu, Z.
    Shang, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/174091.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    near-field tip
    electromagnetic field enhancement
    finite-difference time-domain
    FDTD
    Opis:
    In this paper, we present a simple near-field probe model that is composed of an elongated ellipsoid and a finite metal truncated cone. The elongated ellipsoid has been shown to act as a protrusion or separate particle near a truncated cone apex with strong near-field enhancement under laser excitation. By controllably varying the length of the ellipsoid protrusion from the truncated cone, the truncated cone-ellipsoid probes can be adapted to the suitability of near-field probes. The effects of substrate material and excitation wavelength on the near field enhancement for different tip apexes are also discussed. In addition, we compared the properties of the truncated cone-ellipsoid probe with the widely used hemisphere conical tip by launching surface plasmon polaritons on plasmonic waveguides to prove the suitability of the truncated cone-ellipsoid probes as high performance near-field probes. The present simple model would provide a theoretical basis for the actual construction of probes.
    Źródło:
    Optica Applicata; 2017, 47, 1; 119-130
    0078-5466
    1899-7015
    Pojawia się w:
    Optica Applicata
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Porcine insulin receptor substrate 2: molecular cloning, tissues distribution, and functions in hepatocyte and aortic endothelial cells
    Autorzy:
    Yin, Z.
    Cai, M.
    Weng, X.
    Liu, Z.
    Zhang, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/2087490.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    IRS-2
    molecular cloning
    hepatocytes
    aortic endothelial cells
    Źródło:
    Polish Journal of Veterinary Sciences; 2019, 3; 589-598
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Novel Modulator Topology for Corona Plasma Generation
    Autorzy:
    Ariaans, T.
    Pemen, A.
    Winands, G.
    Liu, Z.
    van Heesch, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/1807899.pdf
    Data publikacji:
    2009-06
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    52.50.Dg
    52.70.Ds
    52.70.Kz
    52.80.Hc
    82.33.Xj
    96.60.pf
    Opis:
    Gas cleaning using plasma technology is slowly introduced into industry nowadays. Several challenges still have to be overcome: increasing the scale, safety, life-time and reducing costs. In 2006 we demonstrated a 20 kW nanosecond pulsed corona system. The electrical efficiency was > 90%. O-radical yields were found to be very high (3-7 mole/kWh). However, to be competitive, high costs of the pulsed power technology are still a major hurdle. Here we present a novel modulator for efficient generation of large volume corona plasma. Only a small amount of expensive high-voltage components are required. Switching is done at an intermediate voltage level of 1 kV with standard thyristors. At the high-voltage side, only a diode and a pulse transformer are needed. The estimated costs are about 5 kEuro/kW, whereas for state-of-the-art pulsed power technology these costs usually are about 20-30 kEuro/kW. Detailed investigations on the modulator and a wire-plate corona reactor will be presented. Modulator parameters have been varied systematically as well as reactor parameters (number of electrodes, electrode-plate distance). The O-radical yield was determined from the measured ozone concentrations at the exhaust of the reactor. With a detailed kinetic model, ozone concentrations could be calculated back to the initial O*-yields. The following conclusions will be discussed: for all parameters, an electrical efficiency of > 90% could be obtained. With fast imaging, the average streamer width was found to be ∼ 737 μm and an estimate for the plasma volume was made. The obtained yields of O-radicals (1-4 mole/kWh) are excellent. The conditions to obtain high yields will be discussed.
    Źródło:
    Acta Physica Polonica A; 2009, 115, 6; 1034-1036
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comprehensive surveillance of the antibody response to Borrelia burgdorferi s.l. in small ruminants in China
    Autorzy:
    Yang, J.
    Liu, Z.
    Guan, G.
    Li, Y.
    Chen, Z.
    Ma, M.
    Liu, A.
    Ren, Q.
    Wang, J.
    Luo, J.
    Yin, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/49708.pdf
    Data publikacji:
    2015
    Wydawca:
    Instytut Medycyny Wsi
    Źródło:
    Annals of Agricultural and Environmental Medicine; 2015, 22, 2
    1232-1966
    Pojawia się w:
    Annals of Agricultural and Environmental Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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