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    Wyświetlanie 1-11 z 11
    Tytuł:
    Effects of crumb rubber on compressive strength of cement-treated soil
    Wpływ granulowanych odpadów gumowych na wytrzymałość na ściskanie gruntu stabilizowanego cementem
    Autorzy:
    Wang, F. C.
    Song, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/230718.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    odzysk odpadów
    odpady gumowe
    granulat
    wytrzymałość na ściskanie
    plastyczność
    czas utwardzania
    refuse reclamation
    crumb rubber
    granulate
    compressive strength
    plasticity
    curing time
    Opis:
    A study was undertaken to investigate the effects of crumb rubber on the strength and mechanical behaviour of Rubberized cement soil (RCS). In the present investigation, 26 groups of soil samples were prepared at five different percentages of crumb rubber content, four different percentages of cement content and two different finenesses of crumb rubber particle. Compressive strength tests were carried out at the curing age of 7 days, 14 days, 28 days and 90 days. The test results indicated that the inclusion of crumb rubber within cement soil leads to a decrease in the compressive strength and stiffness and improves the cement soil’s brittle behaviour to a more ductile one. A reduction of up to 31% in the compressive strength happened in the 20% crumb content group. The compressive strength increases with the increase in the cement content. And the enlargement of cement content is more efficient at low cement content.
    Celem raportu jest przedstawienie wpływu granulowanych odpadów gumowych na wytrzymałość i mechaniczne zachowanie gumowanej mieszanki cementu i gruntu (Rubberized Cement Soil, RCS). W ostatnich dekadach wzrosło znaczenie obróbki gruntu z użyciem cementu w celu poprawy problematycznych gruntów. Kilku badaczy zmieszało różne wybrane dodatki z gruntami sztucznie cementowanymi. Ale warto zauważyć, że dodatki czasami prowadzą do wysokiej sztywności i kruchości. Ponadto problem związany z środowiskiem naturalnym jest coraz gorszy, a brak zasobów jest coraz bardziej dokuczliwy. Zastosowanie recyklingu opon gumowych w gruncie stabilizowanym cementem może być skutecznym sposobem wykorzystania gumy i rozwiązaniem problemu wysokiej sztywności i kruchości gruntów sztucznie cementowanych. Dodanie granulowanych odpadów gumowych powoduje znaczne zmniejszenie wytrzymałości oraz sztywności betonu.
    Źródło:
    Archives of Civil Engineering; 2015, 61, 4; 59-78
    1230-2945
    Pojawia się w:
    Archives of Civil Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Improved dynamic control method for energy storage units in PV dominated microgrids
    Autorzy:
    Wang, Q.
    Liu, Y.
    Song, W.
    Xuan, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/141382.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    current correction coefficient
    load distribution
    PV DC microgrid
    secondary control
    weighted calculation
    Opis:
    In a PV-dominant DC microgrid, the traditional energy distribution method based on the droop control method has problems such as output voltage drop, insufficient power distribution accuracy, etc. Meanwhile, different battery energy storage units usually have different parameters when the system is running. Therefore, this paper proposes an improved control method that introduces a reference current correction factor, and a weighted calculation method for load power distribution based on the parameters of battery energy storage units is proposed to achieve weighted allocation of load power. In addition, considering the variation of bus voltage at the time of load mutation, voltage secondary control is added to realize dynamic adjustment of DC bus voltage fluctuation. The proposed method can achieve balance and stable operation of energy storage units. The simulation results verified the effectiveness and stability of the proposed control strategy.
    Źródło:
    Archives of Electrical Engineering; 2018, 67, 4; 885-898
    1427-4221
    2300-2506
    Pojawia się w:
    Archives of Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Preparation of Twinned Dendrites of Al-Zn Alloy with High Zn Content
    Autorzy:
    Gao, K.
    Song, W.
    Fan, L.
    Ding, Y.
    Guo, X.
    Zhang, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/351396.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    directional solidification
    twinned dendrite
    microstructure
    growth orientation
    deviation angle
    Opis:
    Twinned dendrites in Al-Zn alloy with high Zn content (40% wt.%) were successfully prepared by directional solidification. At different directional solidification rates (1000 and 1500 μm/s), microstructures and growth orientation variations of Al twinned dendrite and non-twinned dendrite were characterized. By using the inverted trapezoidal graphite sleeve at 1000 μm/s, Al twinned dendrite were formed to developed feather crystal structures in longitudinal section. Its primary and secondary twinned dendrite were grew along [110] direction. Moreover the deviation angle between [110] direction of Al twinned dendrite and the heat flow direction was about 27.15°. While not using the inverted trapezoidal graphite sleeve at 1000 and 1500 μm/s, Al dendrite was the non-twinned dendrite and the twinned dendrite was not appeared. The experimental results showed that the higher temperature gradient, a certain pulling rate and convection environment were the formation conditions of twinned dendrites.
    Źródło:
    Archives of Metallurgy and Materials; 2018, 63, 4; 1657-1662
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Genotyping and pathogenic characterization of canine distemper virus based on mutations in the hemagglutinin gene in Chinese domestic dogs
    Autorzy:
    Chen, M.
    Xin, T.
    Hou, S.
    Lin, W.
    Song, W.
    Zhu, H.
    Huang, K.
    Jia, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/2087680.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    canine distemper virus
    hemagglutinin
    phylogenetic analysis
    animal infection
    Źródło:
    Polish Journal of Veterinary Sciences; 2018, 21, 3; 623-629
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Improved Light Conversion Efficiency Of Dye-Sensitized Solar Cell By Dispersing Submicron-Sized Granules Into The Nano-Sized TiO2 Layer
    Poprawa efektywności konwersji światła ogniw słonecznych uczulonych barwnikiem poprzez rozproszenie submikronowych granulek w warstwie nanocząstek TiO2
    Autorzy:
    Song, S. A.
    Lim, M. J.
    Jung, K. Y.
    So, W.-W.
    Moon, S.-J.
    Powiązania:
    https://bibliotekanauki.pl/articles/353347.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    titania nanoparticles
    granules
    dye-sensitized solar cell
    light scattering
    spray pyrolysis
    nanocząsteczki tytanu
    granulat
    uczulone barwnikiem ogniwa słoneczne
    rozpraszanie światła
    Opis:
    In this work, TiO2 nanoparticles and submicron-sized granules were synthesized by a hydrothermal method and spray pyrolysis, respectively. Submicron-sized granules were dispersed into the nano-sized TiO2 layer to improve the light conversion efficiency. Granules showed better light scattering, but lower in terms of the dye-loading quantity and recombination resistance compared with nanoparticles. Consequently, the nano-sized TiO2 layer had higher cell efficiency than the granulized TiO2 layer. When dispersed granules into the nanoparticle layer, the light scattering was enhanced without the loss of dye-loading quantities. The dispersion of granulized TiO2 led to increase the cell efficiency up to 6.51%, which was about 5.2 % higher than that of the electrode consisting of only TiO2 nanoparticles. Finally, the optimal hydrothermal temperature and dispersing quantity of granules were found to be 200°C and 20 wt%, respectively.
    Źródło:
    Archives of Metallurgy and Materials; 2015, 60, 2B; 1467-1471
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparison of body surface area-based and weight-based dosing format for oral prednisolone administration in small and large-breed dogs
    Autorzy:
    Nam, A.
    Kim, S.M.
    Jeong, J.W.
    Song, K.H.
    Koo, T.S.
    Seo, K.W.
    Powiązania:
    https://bibliotekanauki.pl/articles/2087897.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Źródło:
    Polish Journal of Veterinary Sciences; 2017, 3; 611-613
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A novel fibre Bragg grating curvature sensor for structure deformation monitoring
    Autorzy:
    Liu, M.-Y.
    Zhou, S.-G.
    Song, H.
    Zhou, W.-J.
    Zhang, X.
    Powiązania:
    https://bibliotekanauki.pl/articles/221816.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    fibre Bragg grating
    curvature sensor
    large structure parts
    deformation monitoring
    Opis:
    Real-time monitoring of deformation of large structure parts is of great significance and the deformation of such structure parts is often accompanied with the change of curvature. The curvature can be obtained by measuring changes of strain, surface curve and modal displacement of the structure. However, many factors are faced with difficulty in measurement and low sensitivity at a small deformation level. In order to measure curvature in an effective way, a novel fibre Bragg grating (FBG) curvature sensor is proposed, which aims at removing the deficiencies of traditional methods in low precision and narrow adjusting. The sensor combines two FBGs with a specific structure of stainless steel elastomer. The elastomer can transfer the strain of the structure part to the FBG and then the FBG measures the strain to obtain the curvature. The performed simulation and experiment show that the sensor can effectively amplify the strain to the FBG through the unique structure of the elastomer, and the accuracy of the sensor used in the experiment is increased by 14% compared with that of the FBG used for direct measurement.
    Źródło:
    Metrology and Measurement Systems; 2018, 25, 3; 577-587
    0860-8229
    Pojawia się w:
    Metrology and Measurement Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Pharmacokinetics and pharmacodynamics (PK/PD) of irbesartan in Beagle dogs after oral administration at two dose rates
    Autorzy:
    Carlucci, L.
    Song, K.H.
    Yun, H.I.
    Park, H.J.
    Seo, K.W.
    Giorgi, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/31017.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Opis:
    Irbesartan (Irb) is an angiotensin II type 1 receptor antagonist widely used in humans to treat hypertension. Age-related diseases such as hypertension are increasingly being diagnosed in dogs and there is the need for new drugs. The PK/PD of Irb was tested in Beagle dogs. Ten healthy Beagles were orally administered two dose rates (2 and 5 mg/kg), according to a cross over study design. Blood collections for PK analysis and systolic blood pressure (SBP), heart and respiratory rate, mucous membranes colour, capillary refill time and temperature evaluations were performed at scheduled intervals. The drug plasma concentration was dose dependent. The dogs administered 5 mg/kg showed a significant reduction in SBP, while in those receiving 2 mg/kg, this parameter was minimally affected. A counter clockwise hysteresis showed no direct correlation between SBP and plasma concentrations. The minimum effective concentration was theorized to be within the range 550-800 ng/mL. Although further studies are necessary, 5 mg/kg seems to be the more appropriate dose to obtain a hypotensive effect in Beagle dogs.
    Źródło:
    Polish Journal of Veterinary Sciences; 2013, 16, 3
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Magnolol inhibits Streptococcus suis-induced inflammation and ROS formation via TLR2/MAPK/NF-κB signaling in RAW264.7 cells
    Autorzy:
    Wang, J.
    Sun, Y.
    Zhang, L.
    Xu, W.
    You, J.
    Lu, H.
    Song, Y.
    Wei, J.
    Li, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/2087779.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    magnolol
    Streptococcus suis
    Toll-like receptor2
    mitogen-activated protein kinase
    nuclear factor Kappa B
    Źródło:
    Polish Journal of Veterinary Sciences; 2018, 21, 1; 111-118
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A Study On The Metal Carbide Composite Diffusion Bonding For Mechanical Seal
    Badanie łączenia dyfuzyjnego kompozytu metal węglik na mechaniczne uszczelnienie
    Autorzy:
    Kim, D.-K.
    Shon, I.-J.
    Song, J.
    Ryu, W.-J.
    Shin, H.-Ch.
    Kwon, E.-Y.
    Shin, H.
    Kang, S.-J.
    Powiązania:
    https://bibliotekanauki.pl/articles/356399.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    diffusion bonding
    nanostructures
    mechanical seal
    hard metal
    mechanical properties
    łączenie
    nanostruktura
    uszczelnienie mechaniczne
    twardy metal
    właściwości mechaniczne
    Opis:
    Mechanical Seal use highly efficient alternative water having a great quantity of an aqueous solution and has an advantage no corrosion brine. Metal Carbide composites have been investigated as potential materials for high temperature structural applications and for application in the processing industry. The existing Mechanical seal material is a highly expensive carbide alloy, and it is difficult to take a price advantage. Therefore the study of replacing body area with inexpensive steel material excluding O-ring and contact area which demands high characteristics is needed. The development of WC-Ni base carbide alloy optimal bonding composition technique was accomplished in this study. To check out the influence of bonding temperature and time, bonding characteristics of sintering temperature was experimented. The bonding statuses of this test specimen were excellent. The hardness of specimen and bonding rate were measured using ultrasound equipment. In this work, Powder of WC (involved VC, Cr), Co and Mo2C mixed by attrition milling for 24hours. Nanostructured WC-27.6wt.%Ni-1.5wt.%Si-0.11wt.%VC-1.1wt.%B4C composite were fabricated at 1190°C by high temperature vacuum furnace. To check out the influence of bonding temperature and time, bonding characteristics of sintering temperature was experimented. Its relative density was about 99.7%. The mechanical properties (hardness and fracture toughness) were 87.2 HRA and 4.2 M·Pam1/2, respectively. The bonding status of this test specimen was excellent and the thickness of bonding layer was 20 ~30§ at 1050 and 1060°C bonding temperature.
    Źródło:
    Archives of Metallurgy and Materials; 2015, 60, 2B; 1479-1483
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Isolation and sequence analysis of the complete VP2 gene of canine parvovirus from Chinese domestic pets and determination of the pathogenesis of these circulating strains in beagles
    Autorzy:
    Chen, M.R.
    Guo, X.Y.
    Wang, Z.Y.
    Jiang, Y.T.
    Yuan, W.F.
    Xin, T.
    Hou, S.H.
    Song, T.Q.
    Lin, W.D.
    Zhu, H.F.
    Jia, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/2087542.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    canine parvovirus
    molecular epidemiology
    phylogenetic analysis
    pathogenesis
    Źródło:
    Polish Journal of Veterinary Sciences; 2019, 2; 287-296
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-11 z 11

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