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    Wyświetlanie 1-13 z 13
    Tytuł:
    Study on the Initiation Capacities of Two Booster Pellets
    Autorzy:
    Hu, L.
    Hu, S.
    Cao, X.
    Powiązania:
    https://bibliotekanauki.pl/articles/358172.pdf
    Data publikacji:
    2012
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
    Tematy:
    explosion mechanics
    booster
    pellet
    synchronous explosive circuit
    initiation capacity
    main charge
    Opis:
    The appearance of insensitive main charges has created new requirements in the booster pellets of the detonation train, specifically, the output of the booster pellet must be strong enough to initiate the insensitive main charge. Traditional cylindrical booster pellets have great difficulty in meeting the demands of the insensitive main charge for reliable detonation. A four-point-synchronous explosive circuit and an eight-point-synchronous explosive circuit were designed to initiate two booster pellets, designed on the basis of shock initiation theory and effective charge theory, as well as the shaped charge effect theory. The results show that booster pellet 1 and booster pellet 2, under multi-point-synchronous explosive circuits, can initiate standard main charge pellets with less explosive mass than an ordinary cylindrical booster pellet. The initiation capacity of booster pellet 2 is better than that of booster pellet 1.
    Źródło:
    Central European Journal of Energetic Materials; 2012, 9, 3; 261-272
    1733-7178
    Pojawia się w:
    Central European Journal of Energetic Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Structural Stabilities and Elastic Constants of EuX (X = O, S, Se, and Te) Compounds at High Pressure
    Autorzy:
    Kong, B.
    Zhou, Z.
    Sun, X.
    Zhang, L.
    Ling-Hu, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/1400144.pdf
    Data publikacji:
    2013-04
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    61.66.-f
    46.70.-p
    61.43.-j
    75.50.-y
    Opis:
    The structural stabilities, elastic properties and charge transfers of EuX (X = O, S, Se, Te) compounds as a function of pressure are investigated extensively using first-principles calculations. The ground-state parameters, such as lattice constants, bulk modulus are predicted and compared with the available data, our results are satisfactory. The calculated phase transition pressures from the NaCl-type (B1) structure to the CsCl-type (B2) structure for EuX (X = O, S, Se, Te) also accord with the experiments. Particularly, the elastic constants of EuX (X = O, S, Se, Te) under zero pressure and high pressure are simulated appropriately for the first time via density functional theory. The softening behaviors of the elastic shear modulus $C_{44}$ under pressure for the B1 phase of EuX (X = O, S, Se, Te) are captured, which should be responsible for the pressure-induced structural phase transition in the EuX system. It is also suggested that the softening behavior might be induced partly by the p → d and f → d electron transfers of Eu atom under pressure. In addition, the aggregate elastic modulus (B, G, E), Poisson's ratio (σ), Debye temperature $\Theta p_{D}$ are also successfully obtained for both B1 and B2 phases of EuX.
    Źródło:
    Acta Physica Polonica A; 2013, 123, 4; 720-727
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Initiation Capacity of a New Booster Pellet
    Autorzy:
    Hua, L.
    Hu, S.
    Cao, X.
    Powiązania:
    https://bibliotekanauki.pl/articles/358063.pdf
    Data publikacji:
    2014
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
    Tematy:
    explosion mechanics
    booster pellet
    main charge
    initiation capacity
    Opis:
    Insensitive munitions improve the survivability of both weapons and their associated platforms. All weapon systems contain an explosive train which needs to meet the insensitive munitions criteria but also to reliably initiate the main charge explosive. The traditional cylindrical booster pellet has insufficient energy output to reliably initiate an insensitive main charge explosive. To ensure that this requirement can be achieved, a new highly effective booster charge structure was designed. New booster pellets of four different sizes were investigated by numerical simulation and the one with the most powerful output was selected for experimental study. The results show that the new booster pellet has more initiation capacity than a cylindrical booster pellet with the same mass and pressed density. The convergence pressure of the new booster pellet is much higher than that of a cylindrical booster pellet with the same density.
    Źródło:
    Central European Journal of Energetic Materials; 2014, 11, 1; 157-170
    1733-7178
    Pojawia się w:
    Central European Journal of Energetic Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Study on the Initiation Capacities of Conical Ring Booster Pellets
    Autorzy:
    Hu, L.
    Hu, S.
    Cao, X.
    Li, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/358594.pdf
    Data publikacji:
    2014
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
    Tematy:
    booster pellet
    main charge
    initiation capacity
    numerical simulation
    optimization
    Opis:
    The insensitive main charge explosive is becoming an important part of modern weapon development. Insensitive main charge explosives generally have a high critical initiation pressure. The detonation pressure of a traditional cylindrical booster pellet is constant at a specific density and consequently has insufficient energy output to reliably initiate an insensitive main charge explosive. To ensure that this requirement could be achieved, the conical ring booster pellet was designed and optimized. Eight-point-synchronous explosive circuits were designed as appropriate to the sizes of the four booster pellets. The initiation processes of the four conical booster pellets equipped with the eight-point circuit were simulated using ANSYS/LY-DYNA software. The experimental measurements were performed in order to test the initiation capacities of these conical booster pellets. The results demonstrated that their initiation capacities are much better than the initiation capacity of a cylindrical booster pellet. The optimum size of the conical ring booster pellet is when the ratio of the inner to the upper diameter is 0.52, the ratio of the inner to the lower diameter is 0.44, and the ratio of the height to the lower diameter is 0.50.
    Źródło:
    Central European Journal of Energetic Materials; 2014, 11, 3; 335-348
    1733-7178
    Pojawia się w:
    Central European Journal of Energetic Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Three dimensional finite element analysis of a novel osteointegrated dental implant designed to reduce stress peak of cortical bone
    Autorzy:
    Zheng, L.
    Yang, J.
    Hu, X.
    Luo, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/306937.pdf
    Data publikacji:
    2014
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    MES (metoda elementów skończonych)
    implant
    stomatologia
    rozkład naprężeń
    FEA
    CT
    dental implant
    design
    cervical cortex
    stress distribution
    Opis:
    A new type of dental implant was designed as multi-component mainly including inset and abutment between which a gap was introduced to guide the force to transmit from the cancellous bone to cortical bone, with the intention to lower the stress peak at cortical bone. By the way of finite element analysis (FEA) associated with advanced computer tomography (CT) and 3D model reconstruction technology to construct precise mandible model, biomechanical aspects of implant were investigated. Compared with traditional implant that created stress dominantly at cortical bone, stress peak at the implant/bone interface in the cervical cortex decreased sharply (about 51%) for new type of implant. Furthermore, varying implant shape and gap dimensions to optimize the design of this new implant was performed. Optimization results revealed that: 1) screwed cylindrical implant is superior to tapered, stepped and smooth cylindrical implant in effectively decreasing the stress peak of bone; 2) deepening and widening gap would contribute to the decline of stress peak, but at the cost of break and destruction of the inset; 3) suitable gap size with the depth of 7mm and width of 0.3mm would be applicable. This work may provide reference forclinical application of dental implant.
    Źródło:
    Acta of Bioengineering and Biomechanics; 2014, 16, 3; 21-28
    1509-409X
    2450-6303
    Pojawia się w:
    Acta of Bioengineering and Biomechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A multiplex PCR for simultaneous detection of classical swine fever virus, African swine fever virus, highly pathogenic porcine reproductive and respiratory syndrome virus, porcine reproductive and respiratory syndrome virus and pseudorabies in swines
    Autorzy:
    Hu, L.
    Lin, X.Y.
    Yang, Z.X.
    Yao, X.P.
    Li, G.L.
    Peng, S.Z.
    Wang, Y.
    Powiązania:
    https://bibliotekanauki.pl/articles/30249.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Opis:
    In this assay, we developed and evaluated a multiplex PCR (mPCR) for its ability in detecting multiple infections of swine simultaneously. Four pairs of primers were used to detect five viruses. Specific primers were designed for classical swine fever virus (CSFV), African swine fever virus (ASFV) and pseudorabies (PRV). A pair of primers was designed prudently for two different types of porcine reproductive and respiratory syndrome virus that respectively were porcine reproductive and respiratory syndrome virus (PRRSV), highly pathogenic porcine reproductive and respiratory syndrome virus (HP-PRRSV). The detection limits of the mPCR were 1.09×10⁴, 1.50×10³, 2.10×10³, 1.30×10³ and 8.97×10² copies/reaction for CSFV, ASFV, HP-PRRSV, PRRSV and PRV, respectively. A total of 49 clinical specimens were tested by the mPCR, and the result showed that co-infection by two or three viruses was 51%. In conclusion, the PCR is a useful tool for clinical diagnosis of not only single infections but also mixed infections in swines.
    Źródło:
    Polish Journal of Veterinary Sciences; 2015, 18, 4
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Electric Interaction between Two Identical Conducting Spheres in a Uniform Electric Field
    Autorzy:
    Gao, X.
    Wang, Q.
    Li, C.
    Hu, L.
    Sun, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/1401870.pdf
    Data publikacji:
    2015-09
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    41.20.Cv
    47.65.Gx
    Opis:
    An experimental apparatus is devised to measure the interaction between two spheres separated by a small gap in a uniform electric field. The results show that the interaction between two conducting spheres is near that between two dielectric spheres with high permittivity. Accordingly, the calculation can be simplified by mirror image method, for it is only available for conducting system. A method using multiple mirror images of point charges is put forward to analyze the induction of two identical conducting spheres in a uniform electric field. The key operation on how to add compensative charges is emphasized and given out in detail. The results from experiment and calculation are compared, and they agree with each other very well.
    Źródło:
    Acta Physica Polonica A; 2015, 128, 3; 289-293
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Internal Friction of Li7La3Zr2O12 Based Lithium Ionic Conductors
    Autorzy:
    Wang, X. P.
    Song, L.
    Hu, J.
    Xia, Y. P.
    Xia, Y.
    Gao, Y. X.
    Zhang, L. C.
    Magalas, L. B.
    Fang, Q. F.
    Powiązania:
    https://bibliotekanauki.pl/articles/958222.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    lithium ionic conductor
    Li7La3Zr2O12
    internal friction
    Opis:
    The diffusion mechanisms of lithium ions in tetragonal phase as well as in Al and Nb stabilized cubic Li7La3Zr2O12 compounds were investigated by low-frequency internal friction technique. In the cubic Li7La3Zr2O12 phase, a remarkable relaxation-type internal friction peak PC with a peak height up to 0.12 was observed in the temperature range from 15°C to 60°C. In the tetragonal phase however, the height of the PT peak dropped to 0.01. The obvious difference of the relaxation strength between the cubic and tetragonal phases is due to the different distribution of lithium ions in lattice, ordered in the tetragonal phase and disordered in the cubic phase. Based on the crystalline structure of the cubic garnet-type Li7La3Zr2O12 compound, it is suggested that the high internal friction peak in the cubic phase may be attributed to two diffusion processes of lithium ions: 96h↔96h and 96h↔24d.
    Źródło:
    Archives of Metallurgy and Materials; 2016, 61, 1; 21-24
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Prokaryotic expression, purification and antigenicity analysis of African swine fever virus pK205R protein
    Autorzy:
    Wu, X.
    Xiao, L.
    Peng, B.
    Wang, Y.
    Yang, Z.
    Yao, X.
    Hu, L.
    Lin, X.
    Powiązania:
    https://bibliotekanauki.pl/articles/30963.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Opis:
    African swine fever is an acute, febrile and highly virulent porcine disease causing serious economic losses worldwide. The pK205R protein of the African swine fever virus (ASFV) is largely expressed in the early stages of infection, which has given the K205R gene extensive attention. In this study, the ASFV K205R was cloned and expressed in Escherichia coli BL21 (DE3). Expression of histidine-tagged pK205R with a molecular mass of 44 kDa was determined by 12% sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) and Western blot analysis. Optimisation of culture conditions allowed induction of the recombinant protein with 0.4 mM Isopropyl β-D-thiogalactoside (IPTG) at 37oC for 2 h. The protein existed in cellular supernatant and was purified using a Ni-NTA resin column. The purified protein was used to immunize rabbits four times to enable the production of polyclonal antibodies, and the antiserum titre was detected by ELISA. The results showed that the purified pK205R can react with ASFV positive serum specifically by Western blotting. The pK205R had high antigenicity, which indicated that pK205R could be used as an antigen for detection of ASFV-specific antibodies in ELISA testing, and the recombinant protein could contribute to further research of the action and structure of pK205R.
    Źródło:
    Polish Journal of Veterinary Sciences; 2016, 19, 1
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Emerging of canine kobuvirus in dogsin China, 2015
    Autorzy:
    Liu, D.F.
    Liu, X.
    Li, Z.J.
    F. Liu
    Hu, X.L.
    Li, Z.G.
    Liu, C.G.
    Ma, J.Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/2087863.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    canine kobuvirus (CaKoV)
    dogs
    phylogenetic
    VP1
    China
    Źródło:
    Polish Journal of Veterinary Sciences; 2017, 4; 707-711
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Detection of IL-1β, IL-6 and TNF-αin Sprague-Dawely rats’ atrophic thymus induced by lipopolysaccharide
    Autorzy:
    Zhong, Y.B.
    Zhang, X.L.
    Lv, M.Y.
    Hu, X.F.
    Li, Y.
    Powiązania:
    https://bibliotekanauki.pl/articles/2087664.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    lipopolysaccharide
    pro-inflammatory cytokines
    thymus atrophy
    rat
    Źródło:
    Polish Journal of Veterinary Sciences; 2018, 21, 3; 589-597
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Characterization of serum adiponectin and leptin in healthy perinatal dairy cows or cows with ketosis, and their effectson ketosis involved indices
    Autorzy:
    Shen, L.
    Qian, B.
    Xiao, J.
    Zhu, Y.
    Hussain, S.
    Deng, J.
    Peng, G.
    Zuo, Z.
    Zou, L.
    Yu, S.
    Ma, X.
    Zhong, Z.
    Ren, Z.
    Wang, Y.
    Liu, H.
    Zhou, Z.
    Cai, D.
    Hu, Y.
    Zong, X.
    Cao, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/2087289.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    adiponectin
    dairy cows
    ketosis
    leptin
    perinatal period
    Źródło:
    Polish Journal of Veterinary Sciences; 2020, 23, 3; 373-381
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effects of organic cultivation pattern on tomato production: plant growth characteristics, quality, disease resistance, and soil physical and chemical properties
    Autorzy:
    Feng, X.
    Xu, Y.
    Liu, D.
    Peng, L.
    Dong, J.
    Yao, S.
    Feng, Y.
    Feng, Z.
    Li, F.
    Hu, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/12703546.pdf
    Data publikacji:
    2020
    Wydawca:
    Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
    Opis:
    Tomato (Solanum lycopersicum L.) is one of the world’s most important cultivated vegetable. In the traditional cultivation methods, the excessive use of pesticides and fertilizers leads to an imbalance of nutrient elements in the soil, an increase in pests and diseases and a decrease in vegetable quality and yield. In the face of increasingly serious environmental and food problems, organic agriculture is considered to be an effective solution. In this experiment, the effects of organic cultivation patterns on the growth, quality, disease resistance in tomatoes, and the physical and chemical properties of soil were studied by different treatments. The results showed that the application of effective microorganisms (EM) bio-organic fertilizer in the cultivation process can significantly improve the yield, quality, and antioxidant enzyme activity of tomato. The use of straw mulching was found to significantly increase the growth, chlorophyll content, transpiration rate, and soluble sugar content of tomatoes. The application of EM bio-organic fertilizer or straw mulching significantly increased the activity of antioxidant enzyme and the expression of LeCHI gene in tomato leaves and enhanced tomato resistance to diseases. Organic production practices were found to significantly improve the soil.
    Źródło:
    Acta Scientiarum Polonorum. Hortorum Cultus; 2020, 19, 1; 71-84
    1644-0692
    Pojawia się w:
    Acta Scientiarum Polonorum. Hortorum Cultus
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-13 z 13

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