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    Wyświetlanie 1-12 z 12
    Tytuł:
    The influence of hydraulic loading on biofilm properties in a subsurface wastewater infiltration system
    Autorzy:
    Zhang, L.
    Yang, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/205392.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    subsurface wastewater infiltration system
    biofilms
    hydraulic loading
    spatial distribution
    biofilm properties
    Opis:
    In this study, a pilot-scale subsurface wastewater infiltration system (SWIS) was deployed to study landscape water treatment. The goal of the study was to investigate the effects of hydraulic loading on pollutant removal and the spatial distribution of biofilm properties in SWIS. Results showed that the efficiencies of chemical oxygen demand (COD), total nitrogen (TN) and total phosphorus (TP) removal degraded as hydraulic loading increased. Furthermore, quantities of the biofilm properties parameter s increased with the hydraulic loading. Polysaccharide and protein levels ranged from 560 to 1110 μg/g filler and 60 to 190 μg/g filler, respectively, at a hydraulic loading of 0.2 m/d. At a hydraulic loading of 0.4 m/d, the quantities of polysaccharide and protein ranged from 1200 to 3300 μg/g filler and 80 to 290 μg/g filler, respectively. Biofilm intensity and biofilm activity per unit weight decreased with the increase in hydraulic loading.
    Źródło:
    Archives of Environmental Protection; 2016, 42, 4; 70-79
    2083-4772
    2083-4810
    Pojawia się w:
    Archives of Environmental Protection
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Microbial communities and relationship with biofilm spatial distributions in subsurface wastewater infiltration systems
    Autorzy:
    Zhang, L.
    Yang, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/207883.pdf
    Data publikacji:
    2016
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    water treatment
    wastewater infiltration system
    DGGE
    volatile suspended solids
    oczyszczanie ścieków oczyszczanie wody
    systemy infiltracji ścieków
    lotne zawiesiny
    Opis:
    A pilot-scale subsurface wastewater infiltration system (SWIS) was designed for the treatment of polluted river water. The components of microbial communities have been identified and characterized and their dependences on some indicators of biofilm formation in the SWIS have been determined. The average efficiencies of COD, TN and removal were 43.3%, 28.8% and 79.6%, respectively. According to the denaturing gradient gel electrophoresis (DGGE) profile, high intensity and uniform bands were generated, indicating an abundant microbial community in each layer of the SWIS. Furthermore, the Shannon index analysis showed high correlation to the spatial distribution of microbial communities as well as the quantity of biofilm in each sample, which were characterized by measuring volatile suspended solids (VSS), phospholipids, proteins and polysaccharides. Sequencing of partial 16S rRNA gene fragments revealed that the composition of the total bacterial communities was dominated by Alphaproteobacteria, Gammaproteobacteria, Deltaproteobacteria, Pseudomonas, Bacillus, Flavobacteriaceae, TM-7, and other uncultured bacteria. These bacteria may contribute to nutrient removal in SWIS. +4 NH –N
    Źródło:
    Environment Protection Engineering; 2016, 42, 3; 55-69
    0324-8828
    Pojawia się w:
    Environment Protection Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Surface probability model for estimation of size distribution on a conveyor belt
    Autorzy:
    Zhang, Z
    Yang, J.
    Dou, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/109982.pdf
    Data publikacji:
    2014
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    size distribution
    surface probability model
    conveyor belt
    particles
    Opis:
    Estimation of size distribution by image analysis is a key issue in mineral engineering. However, only the surface information of ore piles can be captured, which is a headache problem in this field while only a few researchers pay attention to this problem. A new surface probability model was proposed for estimation of size distribution on a conveyor belt based on the Chavez Model in this investigation. This model was tested and verified to have smaller errors in single size fraction but have bigger errors in multiple size fractions. Several error trends were found and a correction factor was introduced to correct the higher errors. A series of linear equations were developed to calculate this specific correction factor according to Dm (average particle size) and the height of pile. Therefore, empirical probability can be estimated by the specific correction factor and calculated probability, and the surface information of ore piles can be converted into the global information of piles.
    Źródło:
    Physicochemical Problems of Mineral Processing; 2014, 50, 2; 591-606
    1643-1049
    2084-4735
    Pojawia się w:
    Physicochemical Problems of Mineral Processing
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Improved Gaussian Mixture Probability Hypothesis Density for Tracking Closely Spaced Targets
    Autorzy:
    Zhang, H.
    Ge, H.
    Yang, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/227341.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    closely spaced targets
    random finite set
    probability hypothesis density filter
    Gaussian mixture PHD
    weight redistribution
    Opis:
    Probability hypothesis density (PHD) filter is a suboptimal Bayesian multi-target filter based on random finite set. The Gaussian mixture PHD filter is an analytic solution to the PHD filter for linear Gaussian multi-target models. However, when targets move near each other, the GM-PHD filter cannot correctly estimate the number of targets and their states. To solve the problem, a novel reweighting scheme for closely spaced targets is proposed under the framework of the GM-PHD filter, which can be able to correctly redistribute the weights of closely spaced targets, and effectively improve the multiple target state estimation precision. Simulation results demonstrate that the proposed algorithm can accurately estimate the number of targets and their states, and effectively improve the performance of multi-target tracking algorithm.
    Źródło:
    International Journal of Electronics and Telecommunications; 2017, 63, 3; 247-254
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of large particle sizes using a machine vision system
    Autorzy:
    Zhang, Z.
    Yang, J.
    Su, X.
    Ding, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/109404.pdf
    Data publikacji:
    2013
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    machine vision
    particle size distribution
    equivalent ellipse
    best-fit rectangle
    representing analysis
    Opis:
    Many methods based on machine vision were used to estimate coarse particles size distribution in recent years, but comparison of accuracy parameters representing particle size has not been carried out and a related representing analysis has not been yet proposed. Nine parameters were investigated. The results indicated the minor axis of equivalent ellipse and breadth of the best-fit rectangle were the most suitable for representing particle size. The former accuracy ratio was 86.43% and the latter accuracy ratio was 85.39%, while the accuracy of other parameters was less than 70%. A related representing analysis was proposed to explain this phenomenon. This research is instructive and meaningful for the size distribution estimation by machine vision.
    Źródło:
    Physicochemical Problems of Mineral Processing; 2013, 49, 2; 397-405
    1643-1049
    2084-4735
    Pojawia się w:
    Physicochemical Problems of Mineral Processing
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The demand analysis of oceanic T-S-V 3D reconstruction on wide-swath SSH data features based on ROMS and 4DVAR
    Autorzy:
    Zhou, C.
    Zhang, J.
    Yang, J.
    Cao, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/2079186.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    sea surface
    anomaly
    wide-swath altimeter
    3D reconstruction
    accuracy
    Regional Ocean Modelling System
    demand analysis
    Opis:
    Future wide-swath altimetry missions will provide high-resolution information about ocean surface elevation, and facilitate the characterization of meso- and sub-mesoscale ocean activities. In this study, the demand analysis of three-dimensional (3D) oceanic state reconstruction on wide-swath SSH data features was evaluated using a data assimilation strategy. Three groups of experiments were performed to determine if the wide-swath altimetry observations would improve the three-dimensional (3D) field estimates of ocean temperature-salinity-velocity (T-S-V), and to evaluate how the spatial and temporal resolution and accuracy of the wide-swath altimetry observations affected the ocean state estimation. The Regional Ocean Modeling System and the four-dimensional variational data assimilation method were used in the experiments, with numerical simulation for the Taiwan region at a resolution of 1/10° as the example. The sensitivity of the 3D ocean state construction to the wide-swath altimetry measurements was also investigated. The results showed that the wide-swath sea surface height (SSH) measurements would have an overall positive impact on the 3D T-S-V field and that the positive effect would increase as the resolution and accuracy of the observations increased, but the net benefits would gradually decrease. Among the three examined features of the wide-swath altimetry observations, the temporal resolution had the most influence on the 3D ocean state analysis.
    Źródło:
    Oceanologia; 2020, 62, 3; 309-325
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The ground state structures and magnetic properties of ZrₙNi (n=1-9) clusters from first principles calculation
    Autorzy:
    Zhang, Y.
    Zhu, Z.
    Zhou, X.
    Yang, J.
    Zhu, Y.
    Powiązania:
    https://bibliotekanauki.pl/articles/1054889.pdf
    Data publikacji:
    2017-06
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    first-principles calculations
    ZrₙNi clusters
    the geometric structure of balance
    stability and magnetic properties
    Opis:
    The ground state structures and magnetic properties of ZrₙNi (n = 1-9) clusters are studied by using first principles calculation. Firstly, we find the ground state configurations of ZrₙNi (n = 1-9) clusters. Secondly, the magic clusters (Zr₂Ni and Zr₇Ni) of ZrₙNi clusters are found by the comparisons of average binding energies, the second-order energy difference and energy gaps between the highest occupied orbital and the lowest unoccupied orbital of the ground state of ZrₙNi clusters. Thirdly, the calculated results show that magnetic moment of ZrₙNi (n = 1-2) clusters is 4 μ_{B}; however, the magnetic moment of ZrₙNi clusters is about 2 μ_{B} for n = 3-9 (exception for n = 7). Finally, it is found that the magnetic moment of ZrₙNi cluster mainly comes from Zr atom and Ni atom is the electron acceptor from the Mulliken population analysis.
    Źródło:
    Acta Physica Polonica A; 2017, 131, 6; 1507-1511
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Energy Levels and Oscillator Strength of Ni XXIII
    Autorzy:
    Hu, F.
    Jiang, G.
    Yang, J.
    Zhang, J.
    Zhao, X.
    Powiązania:
    https://bibliotekanauki.pl/articles/1493444.pdf
    Data publikacji:
    2011-09
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    31.15.V-
    31.30.jc
    Opis:
    Energy levels and oscillator strengths have been calculated for the fine-structure transitions among the levels of the $(1s^2) 2s^2 2 p^2,$ $2s2 p^3,$ $2p^4,$ $2s^2 2p3s,$ $2s^2 2p3p,$ and $2s^2 2p3d$ configurations of Ni XXIII using the graspVU and FAC program. The extensive configuration interaction and relativistic effects have been included while generating the wave functions. The results are compared with other recent theoretical estimates, and their accuracy is assessed.
    Źródło:
    Acta Physica Polonica A; 2011, 120, 3; 429-437
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    GP5 protein - based ELISA for the detection of PRRSV antibodies
    Autorzy:
    Wang, Y.
    Guo, J.
    Qiuao, S.
    Li, Q.
    Yang, J.
    Jin, Q.
    Zhang, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/30629.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Opis:
    Porcine reproductive and respiratory syndrome virus (PRRSV) is an important swine pathogen, causing huge economic losses each year worldwide. Immunization with vaccines containing the glycoprotein 5 (GP5) of PRRSV is the main measure to induce neutralizing antibodies and control the disease. Here, we developed a GP5 protein-based ELISA for detecting antibodies against PRRSV. The overall yield of purified GP5 in E. coli flask culture was more than 45 mg/L cell culture. Western blot and IFA indicated that the GP5 protein was highly immunogenic. After optimization and validation with IDEXX PRRS using 566 clinical sera, the DSN, DSP, and accuracy of GP5-ELISA were 81.39%, 75.96%, and 80.39%, respectively. Besides, GP5-ELISA is highly specific, showing no cross-reactions with sera against other important swine pathogens. Hence, GP5 is a good diagnostic antigen and the GP5 protein-based ELISA has the potential to be used in the field
    Źródło:
    Polish Journal of Veterinary Sciences; 2016, 19, 3
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Luminescence Decay Kinetics in GaN Studied by Frequency Domain Measurements
    Autorzy:
    Mickevičius, J.
    Vitta, P.
    Tamulaitis, G.
    Žukauskas, A.
    Shur, M.
    Zhang, J.
    Yang, J.
    Gaska, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/1813195.pdf
    Data publikacji:
    2008-03
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    72.20.Jv
    78.55.Cr
    Opis:
    Carrier dynamics in high-quality GaN epilayer was investigated at two extreme excitation levels. Carrier lifetime under high excitation conditions was estimated by using light-induced transient grating technique. Measurements at extremely low excitation power density were performed by using frequency-domain fluorescence lifetime technique. The study was performed in a wide temperature range from 8 to 300 K. The results revealed the influence of donor-acceptor pair recombination and carrier trapping processes.
    Źródło:
    Acta Physica Polonica A; 2008, 113, 3; 833-837
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The endemic radiodonts of the Cambrian Stage 4 Guanshan Biota of South China
    Autorzy:
    Jiao, D.-G.
    Pates, S.
    Lerosey-Aubril, R.
    Ortega-Hernandez, J.
    Yang, J.
    Lan, T.
    Zhang, X-G.
    Powiązania:
    https://bibliotekanauki.pl/articles/2082327.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    Amplectobeluidae
    Anomalocarididae
    Tamisiocarididae
    Paranomalocaris
    Burgess Shale-type exceptional
    preservation
    shallow water
    Cambrian
    China
    Opis:
    The Guanshan Biota (South China, Cambrian, Stage 4) contains a diverse assemblage of biomineralizing and non-biomineralizing animals. Sitting temporally between the Stage 3 Chengjiang and Wuliuan Kaili Biotas, the Guanshan Biota contains numerous fossil organisms that are exclusive to this exceptional deposit. The Guanshan Konservat-Lagerstätte is also unusual amongst Cambrian strata that preserve non-biomineralized material, as it was deposited in a relatively shallow water setting. In this contribution we double the diversity of radiodonts known from the Guanshan Biota from two to four, and describe the second species of Paranomalocaris. In addition, we report the first tamisiocaridid from South China, and confirm the presence of a tetraradial oral cone bearing small and large plates in “Anomalocaris” kunmingensis, the most abundant radiodont from the deposit. All four radiodont species, and three genera, are apparently endemic to the Guanshan Biota. When considered in the wider context of geographically and temporally comparable radiodont faunas, endemism in Guanshan radiodonts is most likely a consequence of the shallower and more proximal environment in which they lived. The strong coupling of free-swimming radiodonts and benthic communities underlines the complex relationship between the palaeobiogeographic and environmental distributions of prey and predators. This local adaptation of radiodonts to their prey is highlighted by the frontal appendage morphology of the two species of Paranomalocaris, apparently specialised to different feeding modes, while the recognition of the limited geographic range of some radiodont faunas highlights the importance of exploring as many deposits as possible to fully understand this group.
    Źródło:
    Acta Palaeontologica Polonica; 2021, 66, 2; 255-274
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Identification of a linear epitope in the capsid protein of goose astrovirus with monoclonal antibody
    Autorzy:
    Dai, G.
    Huang, X.
    Liu, Q.
    Li, Y.
    Zhang, L.
    Han, K.
    Yang, J.
    Liu, Y.
    Xue, F.
    Zhao, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/16647377.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czasopisma i Monografie PAN
    Tematy:
    epitope
    goose astrovirus
    capsid protein
    monoclonal antibody
    Opis:
    Goose astrovirus (GoAstV) is a novel avastrovirus that typically causes gosling gout and results in 2 to 20% mortality. GoAstV capsid protein is the sole structural protein, which is responsible for viral attachment, assembly, maturation as well as eliciting host antibodies. However, the epitopes within capsid protein have not been well studied. In this study, a monoclonal antibody, named 1D7, was generated against GoAstV capsid protein by hybridoma technology. Western blot results showed that this MAb could react with recombinant capsid protein expressed in E. coli. Also, it recognized the precursor of capsid protein, VP90 and VP70, in GoAstV-infected cells. Besides, excellent specificity of MAb 1D7 was further demonstrated in indirect immunofluorescence assay and immunohistochemical analysis. Epitope mapping results revealed that MAb 1D7 recognized the epitope 33QKVY 36 within Cap protein. Sequence alignment indicated that 33QKVY 36 is a conserved epitope among the isolates of goose astrovirus type 2 (GoAstV-2), suggesting the potential for its use in GoAstV-2 specific diagnostic assay. These findings may provide some insight into a function of the GoAstV capsid protein and further contribute to the development of diagnostic methods for GoAstV infection.
    Źródło:
    Polish Journal of Veterinary Sciences; 2022, 25, 4; 579-587
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-12 z 12

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