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Wyszukujesz frazę "Nguyen, H. C." wg kryterium: Autor

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    Wyświetlanie 1-14 z 14
    Tytuł:
    Extraction of cordycepic acid from the fruiting body of Cordyceps militaris (L.)
    Autorzy:
    Do, T.H.
    Nguyen, H.C.
    Powiązania:
    https://bibliotekanauki.pl/articles/80160.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    cordycepic acid
    fruiting body
    Cordyceps militaris
    extraction
    optimization
    ethanol concentration
    response surface methodology
    Źródło:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2019, 100, 3
    0860-7796
    Pojawia się w:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Flexural and shear behavior of reinforced concrete beams strengthened with carbon textile reinforced concrete
    Autorzy:
    Nguyen, H. C.
    Ngo, D. Q.
    Powiązania:
    https://bibliotekanauki.pl/articles/231296.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    beton zbrojony tkaniną
    tkanina węglowa
    zginanie
    ścinanie
    wzmocnienie
    ABAQUS
    textile reinforced concrete
    flexural
    shear
    strengthening
    Opis:
    Recently, textile reinforced concrete (TRC) has been intensively studied for strengthening reinforced concrete (RC) and masonry structures. This study is to experimentally explore the effectiveness of application of carbon TRC to strengthen RC beam in flexure and shear. Concerning the cracks formation, failure modes, ultimate strength and overall stiffness, the performance of the strengthened beams compared to the control beams were evaluated from two groups of tests. The test results confirm that the TRC layers significantly enhance both shear and flexural capacity of RC beams in cracking, yielding and ultimate loads. All of the tested specimens were also modelled using ABAQUS/CAE software, in order to validate the experimental results. The numerical results show that the simulation models have good adaptability and high accuracy.
    Źródło:
    Archives of Civil Engineering; 2020, 66, 3; 407-426
    1230-2945
    Pojawia się w:
    Archives of Civil Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Evaluation of changes in the growth and chemical constituents of Anoectochilus formosanus Hayata grown under hydroponic conditions
    Autorzy:
    Nguyen, H.C.
    Nhu, T.Q.M.
    Dung, P.V.
    Hieu, N.D.
    Tuan, T.T.
    Huyen, P.X.
    Truong, D.-H.
    Powiązania:
    https://bibliotekanauki.pl/articles/80522.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Anoectochilus formosanus
    medicinal plant
    mineral nutrition
    hydroponic cultivation
    chemical constituent
    antioxidant activity
    phytochemical screening
    alkaloid content
    flavonoids
    glycoside
    terpenoid
    steroid
    Źródło:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2018, 99, 4
    0860-7796
    Pojawia się w:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Sintering and Microstructures of SUS 316L Powder Produced by 3D Printing Process
    Autorzy:
    Kim, W. J.
    Nguyen, H.-H.
    Kim, H. Y.
    Nguyen, M.-T.
    Park, H. S.
    Kim, J.-C.
    Powiązania:
    https://bibliotekanauki.pl/articles/356018.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    stainless steel
    3D printing
    selective laser sintering
    SUS 316L
    flake powder
    Opis:
    Selective laser sintering (SLS) is a type of laminating sintering technique, using CO2 laser with (metal, polymer, and ceramic) powders. In this result, the flake SUS 316L was used to achieve a high porous product, and compare to spherical type. After SLS, the porosity of flake-type sample with 34% was quite higher than that of the spherical-type one that had only 11%. The surface roughness of the flake SLS sample were also investigated in both inner and surface parts. The results show that the deviation of the roughness of the surface part is about 64.40μm, while that of the internal one was about 117.65μm, which presents the containing of high porosity in the uneven surfaces. With the process using spherical powder, the sample was quite dense, however, some initial particles still remained as a result of less energy received at the beneath of the processing layer.
    Źródło:
    Archives of Metallurgy and Materials; 2017, 62, 2B; 1215-1218
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Formation of Different Cu Nanopowders and Stability of Cu Fluids Produced by Electrical Explosion of Wire in Liquid
    Autorzy:
    Nguyen, M.-T.
    Kim, J.-H.
    Kim, J.-C.
    Powiązania:
    https://bibliotekanauki.pl/articles/355217.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Cu nanopowder
    Cu nanofluids
    electrical explosion of wire
    stability of nanofluids
    Opis:
    In this study, copper nanoparticles and nanofluids were synthesized by electrical explosion of wire (EEW) in liquid media such as water, ethanol, and acetone. The effect of the different conditions on the properties of the as-synthesized Cu powders and nanofluids were investigated. X-ray diffraction (XRD) analysis was employed to measure the phase of the as-synthesized powder. Only pure Cu phase appeared in case of acetone condition, but CuO and CuO2 phases could be observed in the others. The EEWed particle size was broadened from under 50 to 100 nm. The results showed that acetone was the best condition for achieving smaller particles, preventing the oxidation of the Cu particles and good stability of the nanofluids.
    Źródło:
    Archives of Metallurgy and Materials; 2018, 63, 3; 1453-1457
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Modular intelligent fixture system for flexible clamping of large parts
    Autorzy:
    Möhring, H.-C.
    Gessler, W.
    König, A.
    Nguyen, L. T.
    Nguyen, Q. P.
    Powiązania:
    https://bibliotekanauki.pl/articles/100187.pdf
    Data publikacji:
    2017
    Wydawca:
    Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
    Tematy:
    machine tool
    modular fixture
    hybrid material
    intelligent system
    Opis:
    In this work a modular intelligent fixture system for flexible clamping of large parts is presented. The fixture modules consist of a hybrid material structure involving metal frame elements and mineral casting. These modules can be combined and connected to realize fixtures adapted to the geometry of the workpiece and requirements of the machining processes. By integrated pipes and interfaces, an internal hydraulic supply and active cooling is possible even for combined modules. Temperature and acceleration sensors allow for an active thermal control and process monitoring. The modules and first test fixtures are investigated in experiments.
    Źródło:
    Journal of Machine Engineering; 2017, 17, 4; 29-39
    1895-7595
    2391-8071
    Pojawia się w:
    Journal of Machine Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    224Ra and the 224Ra/228Ra activity ratio in selected mineral waters from the Polish Carpathians
    Autorzy:
    Nguyen, C. D.
    Rajchel, L.
    Van-Duong, H.
    Nowak, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/2060569.pdf
    Data publikacji:
    2017
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    Ra-224
    radium
    mineral waters
    effective dose
    LSC method
    Opis:
    Mineral and therapeutic waters widely occurring in the Polish Carpathians contain a vast amount of biogenic elements. However, radioactive elements like radium isotopes are also found in these waters. This paper presents the first results of the activity concentration measurements of 224Ra in selected mineral waters of the Polish Carpathians. Additionally, the content of 226Ra and 228Ra, and the activity ratios of 224Ra/228Ra, 224Ra/226Ra and 226Ra/228Ra in the waters were determined. The work was based on a method for the simultaneous determination of 224Ra, 226Ra and 228Ra in water samples using the a/b liquid scintillation spectrometer. The results show that the activity concentrations of 224Ra, 226Ra and 228Ra in the mineral waters are comparable and vary from ca. 220 mBq/L to above 1500 mBq/L. The activity ratios of 224Ra/228Ra, 224Ra/226Ra and 226Ra/228Ra are variable within the ranges of 0.68 to 1.48, 0.65 to 1.48, and 0.78 to 2.05, respectively. The committed effective dose resulting from the intake of 224Ra through the water consumption is far lower than that from 226Ra and 228Ra.
    Źródło:
    Geological Quarterly; 2017, 61, 4; 771--778
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Forecasting Stock Price using Wavelet Neural Network Optimized by Directed Artificial Bee Colony Algorithm
    Autorzy:
    Khuat, T. T.
    Le, Q. C.
    Nguyen, B. L.
    Le, M. H.
    Powiązania:
    https://bibliotekanauki.pl/articles/308651.pdf
    Data publikacji:
    2016
    Wydawca:
    Instytut Łączności - Państwowy Instytut Badawczy
    Tematy:
    Artificial Bee Colony algorithm
    Artificial Neural Network
    back-propagation algorithm
    stock price forecasting
    wavelet transform
    Opis:
    Stock prediction with data mining techniques is one of the most important issues in finance. This field has attracted great scientific interest and has become a crucial research area to provide a more precise prediction process. This study proposes an integrated approach where Haar wavelet transform and Artificial Neural Network optimized by Directed Artificial Bee Colony algorithm are combined for the stock price prediction. The proposed approach was tested on the historical price data collected from Yahoo Finance with different companies. Furthermore, the prediction result was found satisfactorily enough as a guide for traders and investors in making qualitative decisions.
    Źródło:
    Journal of Telecommunications and Information Technology; 2016, 2; 43-52
    1509-4553
    1899-8852
    Pojawia się w:
    Journal of Telecommunications and Information Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Simulation aided design of intelligent machine tool components
    Autorzy:
    Mohring, H. C.
    Wiederkehr, P.
    Leopold, M.
    Nguyen, L. T.
    Hense, R.
    Siebrecht, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/100035.pdf
    Data publikacji:
    2016
    Wydawca:
    Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
    Tematy:
    characteristic diagram based correction
    structure model based correction
    thermoelastic deformation
    online enabled TCP correction machine tool
    intelligent component
    process simulation
    layout methodology
    Opis:
    By integrating sensors and actuators, intelligent machine tool components can be realized, which allow the monitoring of machining processes and machine tool states and an active influencing of process conditions. In the design and layout of these intelligent machine tool components, their mechanical structure and the functional performance of the sensor and actuator sub-systems have to be optimized. As an example, a sensor and actuator integrated fixture system for clamping large but sensitive aerospace structural parts is presented here. In order to investigate the major influences of design approaches on the behaviour of the workpiece and fixture, especially with respect to vibrations and process stability during milling, multiple test rigs and prototypes for basic analyses and machining tests were developed and realized. Experimental and Finite Element Analysis (FEA) results are presented and discussed. Process simulations were conducted taking the dynamic behaviour of the clamped workpiece at different processing steps into account. This simulation can be used for predicting the limits of the process stability. An approach of sensor and actuator integration is described and test results are shown. The paper introduces a principle design and layout methodology for similar intelligent machine tool components.
    Źródło:
    Journal of Machine Engineering; 2016, 16, 3; 5-33
    1895-7595
    2391-8071
    Pojawia się w:
    Journal of Machine Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Accurate Phase Calibration for Digital Beam-Forming in Multi-Transceiver HF Radar System
    Autorzy:
    Nguyen, H. Q.
    Whittington, J. S.
    Devlin, J. C.
    Vu, H. L.
    Vu, N. V.
    Custovic, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/227073.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    digital beamforming
    phased array antenna
    phase calibration
    radar
    transceivers
    Opis:
    The TIGER-3 radar is being developed as an “all digital” radar with 20 integrated digital transceivers, each connected to a separate antenna. Using phased array antenna techniques, radiated power is steered towards a desired direction based on the relative phases within the array elements. This paper proposes an accurate phase measurement method to calibrate the phases of the radio output signals using Field Programmable Gate Array (FPGA) technology. The method sequentially measures the phase offset between the RF signal generated by each transceiver and a reference signal operated at the same frequency. Accordingly, the transceiver adjusts its phase in order to align to the reference phase. This results in accurately aligned phases of the RF output signals and with the further addition of appropriate phase offsets, digital beamforming (DBF) can be performed steering the beam in a desired direction. The proposed method is implemented on a Virtex-5 VFX70T device. Experimental results show that the calibration accuracy is of 0.153 degrees with 14 MHz operating frequency.
    Źródło:
    International Journal of Electronics and Telecommunications; 2013, 59, 3; 245-254
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Changes in nutrient and heavy metal content levels of sawdust due to vermicomposting by Allomyrina dichotoma subsp. tunobosonis
    Autorzy:
    Hoang, C.N.
    Yang, Z.-W.
    Huang, M.-Y.
    Lin, K.-H.
    Yang, C.-M.
    Nguyen, M.K.
    Powiązania:
    https://bibliotekanauki.pl/articles/81229.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    vermicomposting
    organic waste
    nutrient
    heavy metal content
    sawdust substrate
    Allomyrina dichotoma
    beetle
    Źródło:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2019, 100, 2
    0860-7796
    Pojawia się w:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Mechanism of Optical Detection of Magnetic Resonance in Cd$\text{}_{1-x}$Mn$\text{}_{x}$Te
    Autorzy:
    Godlewski, M.
    Surma, M.
    Gałązka, R. R.
    Nguyen, The Khoi
    Gisbergen, S.J.C.H.M.
    Gregorkiewicz, T.
    Ammerlaan, C. A. J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1921620.pdf
    Data publikacji:
    1992-10
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    76.70.Hb
    75.50.Pp
    78.20.Ls
    Opis:
    The photoluminescence and optically detected magnetic resonance studies of Cd$\text{}_{1-x}$Mn$\text{}_{x}$Te (x = 0.095) are presented. The Mn$\text{}^{2+}$ magnetic resonance is detected optically via the changes of "edge" emission induced by the decrease of the Mn spin system magnetization.
    Źródło:
    Acta Physica Polonica A; 1992, 82, 4; 717-719
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Induction, growth and paclitaxel content of needle- and petiole-derived calli in Himalayan yew (Taxus wallichiana Zucc.) under light-emitting diodes
    Autorzy:
    Nhut, D.T.
    Nguyen, P.L.H.
    Don, N.T.
    Hien, N.T.T.
    Huy, N.P.
    Nam, N.B.
    Vinh, B.T.
    Luan, T.C.
    Powiązania:
    https://bibliotekanauki.pl/articles/19361.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Źródło:
    Acta Biologica Cracoviensia. Series Botanica; 2014, 56, 2
    0001-5296
    Pojawia się w:
    Acta Biologica Cracoviensia. Series Botanica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Software Startups – A Research Agenda
    Autorzy:
    Unterkalmsteiner, M.
    Abrahamsson, P.
    Wang, X. F.
    Nguyen-Duc, A.
    Shah, S.
    Bajwa, S. S.
    Baltes, G. H.
    Conboy, K.
    Cullina, E.
    Dennehy, D.
    Edison, H.
    Fernandez-Sanchez, C
    Garbajosa, J.
    Gorschek, T.
    Klotins, E.
    Hokkanen, L.
    Kon, F.
    Lunesu, I.
    Marchesi, M.
    Morgan, L.
    Oivo, M.
    Selig, C.
    Seppänen, P.
    Sweetman, R.
    Tyrväinen, P.
    Ungerer, C.
    Yagüe, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/953060.pdf
    Data publikacji:
    2016
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    software startup
    research agenda
    software-intensive systems
    Opis:
    Software startup companies develop innovative, software-intensive products within limited time frames and with few resources, searching for sustainable and scalable business models. Software startups are quite distinct from traditional mature software companies, but also from micro-, small-, and medium-sized enterprises, introducing new challenges relevant for software engineering research. This paper’s research agenda focuses on software engineering in startups, identifying, in particular, 70+ research questions in the areas of supporting startup engineering activities, startup evolution models and patterns, ecosystems and innovation hubs, human aspects in software startups, applying startup concepts in non-startup environments, and methodologies and theories for startup research. We connect and motivate this research agenda with past studies in software startup research, while pointing out possible future directions. While all authors of this research agenda have their main background in Software Engineering or Computer Science, their interestin software startups broadens the perspective to the challenges, but also to the opportunities that emerge from multi-disciplinary research. Our audience is therefore primarily software engineering researchers, even though we aim at stimulating collaborations and research that crosses disciplinary boundaries. We believe that with this research agenda we cover a wide spectrum of the software startup industry current needs.
    Źródło:
    e-Informatica Software Engineering Journal; 2016, 10, 1; 89-123
    1897-7979
    Pojawia się w:
    e-Informatica Software Engineering Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-14 z 14

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