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Wyszukujesz frazę "Kong, M." wg kryterium: Wszystkie pola

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    Wyświetlanie 1-14 z 14
    Tytuł:
    Synthesis and Characterization of Si Oxide Coated Nano Ceria by Hydrolysis, and Hydrothermal Treatment at Low Temperature
    Autorzy:
    Kong, M.
    Kim, H. W.
    Powiązania:
    https://bibliotekanauki.pl/articles/354290.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    nano-particle
    water glass
    hydro-reaction
    coating method
    Opis:
    The purpose of this work was to the application of Si oxide coatings. This study deals with the preparation of ceria (CeO2) nanoparticles coating with SiO2 by water glass and hydrolysis reaction. First, the low temperature hydro-reactions were carried out at 30~100°C. Second, Silicon oxide-coated Nano compounds were obtained by the catalyzing synthesis. CeO2 Nano-powders have been successfully synthesized by means of the hydrothermal method, in a low temperature range of 100~200°C. In order to investigate the structure and morphology of the Nano-powders, scanning electron microscopy (SEM) and X-ray diffraction (XRD) were employed. The XRD results revealed the amorphous nature of silica nanoparticles. To analyze the quantity and properties of the compounds coated with Si oxide, transmission electron microscopy (TEM) in conjunction with electron dispersive spectroscopy was used. Finally, it is suggested that the simple growth process is more favorable mechanism than the solution/aggregation process.
    Źródło:
    Archives of Metallurgy and Materials; 2017, 62, 2B; 1125-1129
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Catalyst-Free Growth of Magnesium Oxide Whiskers and Their Characteristics
    Autorzy:
    Kim, H.
    Kong, M.
    Yang, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1813397.pdf
    Data publikacji:
    2008-03
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    81.07.-b
    78.55.-m
    Opis:
    This study reports the production of magnesium oxide (MgO) whiskers on silicon (Si) substrates by the thermal heating of $MgB_2$ powders. We investigated the structural properties of the as-synthesized whiskers by using X-ray diffraction, transmission electron microscopy, selected area electron diffraction, and scanning electron microscopy. The product consisted of one-dimensional whiskers with a square cross-section. The whiskers had a single-crystalline cubic structure of MgO. The photoluminescence measurement with the Gaussian fitting exhibited visible light emission bands centered at 2.39 eV and 2.91 eV. We proposed the growth of MgO whiskers to follow the vapor-solid mechanism.
    Źródło:
    Acta Physica Polonica A; 2008, 113, 3; 1021-1024
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Understanding the Oxide Dispersion Behavior of Yttria in Metal Matrix of MA956 Alloy through High-Energy Milling and Hot Press Sintering
    Autorzy:
    Swain, B.
    Han, D.
    Kim, G.-H.
    Kong, M.-S.
    Ahn, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/351770.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    ODS
    mechanical alloying
    high-energy milling
    oxide particle distribution
    Opis:
    MA956 (Fe-Cr-Al) alloy powder was high-energy ball milled with various amount of yttria contents (1,2,3, and 4 wt.%) to fabricate an oxide dispersion strengthened alloy. The milled powders were then consolidated using hot press sintering at 1150°C. The surface morphology and crystal structure of MA956 powder during the high-energy milling depending on the yttria contents was investigated using particle size analysis, X-ray diffraction, and scanning electron microscopy. The microstructural analysis of sintered alloy was performed using transmission electron microscopy and energy dispersive spectroscopy to evaluate the dispersion behavior of yttrium oxide. The results showed that, as yttria contents increased, the oxide particles became finer and are uniformly distributed during the high-energy milling. However, after the sintering, the oxide particles were coarsened with more than 3 wt.% of yttria addition.
    Źródło:
    Archives of Metallurgy and Materials; 2017, 62, 2B; 1377-1381
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Manufacturing And High Temperature Oxidation Properties Of Electro-Sprayed Fe-24.5% Cr-5%Al Powder Porous Metal
    Wytwarzanie i wysokotemperaturowe utlenianie elektro-rozpylanego porowatego proszku Fe-24.5% Cr-5%Al
    Autorzy:
    Lee, K-A.
    Oh, J-S.
    Kong, Y-M.
    Kim, B-K.
    Powiązania:
    https://bibliotekanauki.pl/articles/350912.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    powder porous metal
    electro-spray process
    electric wire explosion
    Fe-24Cr-5Al
    high temperature oxidation
    porowaty proszek metalu
    elektrorozpylanie
    utlenianie wysokotemperaturowe
    Opis:
    Fe-Cr-Al based Powder porous metals were manufactured using a new electro-spray process, and the microstructures and high-temperature oxidation properties were examined. The porous materials were obtained at different sintering temperatures (1350°C, 1400°C, 1450°C, and 1500°C and with different pore sizes (500 μm, 450 μm, and 200 μm). High-temperature oxidation experiments (TGA, Thermal Gravimetry Analysis) were conducted for 24 hours at 1000°C in a 79% N2+ 21% O2, 100 mL/min. atmosphere. The Fe-Cr-Al powder porous metals manufactured through the electro-spray process showed more-excellent oxidation resistance as sintering temperature and pore size increased. In addition, the fact that the densities and surface areas of the abovementioned powder porous metals had the largest effects on the metal’s oxidation properties could be identified.
    Źródło:
    Archives of Metallurgy and Materials; 2015, 60, 2B; 1169-1173
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Public transport services in Hong Kong: A voice from Hong Kong Citizen (Policy Paper)
    Autorzy:
    Yuen, Simon S.M.
    Powiązania:
    https://bibliotekanauki.pl/articles/2141009.pdf
    Data publikacji:
    2019
    Wydawca:
    Fundacja Centrum Badań Socjologicznych
    Tematy:
    public transport
    railway
    private car
    Hong Kong
    Opis:
    Hong Kong is a city with a diversified public transport system. However, the number of private cars has increased abnormally, especially the completion of private housings in the New Territories and North Lantau, due to the daily work of the urban areas or personal needs. The number of citizens of private cars has increased significantly. In recent years, the problem of "frequent and severe congestion" has resulted in the saturation of the more timely railways. The main reason is that the roads in the existing busy areas cannot meet the large number of private cars, and the major roads in the New Territories of Hong Kong and Kowloon have been subject to "frequent and severe congestion". The Government's solution to the problem is to build roads and railways only. In recent years, many new roads and railways, the congestion of old roads and highways have not been improved. Railways cannot change the private car owners to switch to public transport habits, “but increased”, what is the main reason? Where roads and railways solve problems, this study agrees that denser areas without rail services are necessary to build or extend existing rail routes. But what is the need to build a new railway to relieve the existing railway saturation? We use the railway but not others? Is railway extension is one of the cause for traffic congestion? In recent years, the government has recognized that private cars are the main source of traffic congestion in Hong Kong. Government indicated that it planned to introduce another electronic road toll and increase private license plate or registration tax. Hope that this report will help us understand the problems we are facing now and discuss how we can resolve them so as to come up with better solutions.
    Źródło:
    Journal of Sustainable Development of Transport and Logistics; 2019, 4, 2; 21-31
    2520-2979
    Pojawia się w:
    Journal of Sustainable Development of Transport and Logistics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Kwartał jutra
    Quarter of tomorrow
    Autorzy:
    Twardowski, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/345595.pdf
    Data publikacji:
    2013
    Wydawca:
    Politechnika Krakowska im. Tadeusza Kościuszki. Wydział Architektury. Katedra Kształtowania Środowiska Mieszkaniowego
    Tematy:
    intensywność zabudowy
    gęstość zaludnienia
    wieża mieszkalna
    Hong Kong
    intensity of building
    population density
    residential tower
    Hongkong
    Opis:
    Artykuł jest próbą szukania odpowiedzi na pytanie o przyszły kształt środowiska mieszkaniowego pośród zapisków z podróży tam, gdzie przyszłość już nadeszła – w prototypie wielkich metropolii, których podstawowym współczynnikiem jest intensywność, skala i gęstość – Hongkongu.
    The article is trial of looking for answer on the question about the future shape of housing environment among records from travel there, where the future has just come – in the prototype of huge metropolises, which basic factor is intensity, scale and density – Hong Kong.
    Źródło:
    Środowisko Mieszkaniowe; 2013, 12; 192-195
    1731-2442
    2543-8700
    Pojawia się w:
    Środowisko Mieszkaniowe
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Postural Evaluation in a Poultry Farm for Broiler Chickens
    Autorzy:
    Wang, H.
    Kong, Y. K.
    Jung, M. C.
    Powiązania:
    https://bibliotekanauki.pl/articles/91121.pdf
    Data publikacji:
    2012
    Wydawca:
    Centralny Instytut Ochrony Pracy
    Tematy:
    simultaneous posture
    individual posture
    body posture
    finger posture
    Opis:
    The goal of this study was to evaluate working postures in 9 operations of poultry farming for broiler chickens for 14 body segments with 4 categories, and for fingers with 14 categories. Overall, the farmers commonly bent almost all their body segments and used power grips. The operations of cleaning with water wand and inspecting chickens seemed light work because the farmers walked around most of their working time. The operations of detaching base from hanging feeder and attaching base to hanging feeder had the farmers continue squatting to handle the feeders close to the floor. The farmers also repeatedly bent their trunks in shoveling feces, unloading a box of chicks, and releasing chicks. A power grip was frequently observed due to using tools with round handles. Workplace design to raise working height would be necessary for a better working environment for broiler farmers.
    Źródło:
    International Journal of Occupational Safety and Ergonomics; 2012, 18, 1; 67-75
    1080-3548
    Pojawia się w:
    International Journal of Occupational Safety and Ergonomics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Uniqueness and parameter dependence of positive doubly periodic solutions of nonlinear telegraph equations
    Autorzy:
    Graef, J. R.
    Kong, L.
    Wang, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/255148.pdf
    Data publikacji:
    2014
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    telegraph equation
    doubly periodic solution
    Green's functions
    Opis:
    The authors study a type of second order nonlinear telegraph equation. The existence and uniqueness of positive doubly periodic solutions are discussed. The parametric dependence of the solutions is also investigated. Two examples are given as applications of the results.
    Źródło:
    Opuscula Mathematica; 2014, 34, 2; 363-373
    1232-9274
    2300-6919
    Pojawia się w:
    Opuscula Mathematica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Study of the force and deformation characteristics of subsea mudmat-pile hybrid foundations
    Autorzy:
    Kong, D.
    Deng, M.
    Liu, Y.
    Tan, X.
    Powiązania:
    https://bibliotekanauki.pl/articles/258965.pdf
    Data publikacji:
    2018
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    subsea mudmat-pile hybrid foundations
    force characteristics
    deformation characteristics
    combined loads
    Opis:
    To study the force and deformation characteristics of subsea mudmat-pile hybrid foundations under different combined loads, a project at a water depth of 200 m in the South China Sea was studied. A numerical model of a subsea mudmatpile hybrid foundation is developed using the numerical simulation software FLAC3D. The settlement of the seabed soil, the bending moments of the mudmat, and the displacements and bending moments along the pile shaft under different load combinations, including vertical load and horizontal load, vertical load and bending moment, and horizontal load and bending moment load, are analyzed. The results indicate that settlement of the seabed soil is reduced by the presence of piles. The settlement of the mudmat is reduced by the presence of piles. Different degrees of inclination occur along the pile shaft. The angle of inclination of pile No. 1 is greater than that of pile No. 2. The dip directions of piles No. 1 and No. 2 are identical under the vertical load and bending moment and are opposite to those under the other combined loads. The piles that are located at the junctions between the mudmat and the tops of the piles are easily destroyed.
    Źródło:
    Polish Maritime Research; 2018, S 3; 43-53
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    High-Coercivity FePt Nanoparticle Assemblies Embedded in Oxide-Matrix by Atomic Layer Deposition
    Autorzy:
    Kong, J.
    Li, A.
    Gao, M.
    Yan, Q.
    Wu, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/1399662.pdf
    Data publikacji:
    2013-02
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.50.Vv
    75.75.Cd
    75.50.Bb
    75.50.Ss
    Opis:
    Self-assembled face-centered cubic FePt nanoparticles were embedded into the oxide capping layer using the atomic layer deposition technology. The effect of the oxide-matrix layer on the structure, mono-dispersibility, and magnetic properties of the FePt/oxide composite thin films was investigated. Experimental results suggest that the protection of the oxide-matrix capping layer can effectively inhibit the grain growth and particle aggregation, and preserve the ordered domains of the FePt nanoparticles during the L 1_0 ordering transition through annealing. The combination of the atomic layer deposition capping layer and self-assembled FePt nanoparticles provides a new potential approach to fabricate the ultrahigh-density magnetic recording media.
    Źródło:
    Acta Physica Polonica A; 2013, 123, 2; 173-176
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A method for tracing exogenous DNA uptake in live spermatozoa and embryos
    Autorzy:
    Mu, Y.
    Wang, J.
    Liu, Z.
    Zhao, Y.
    Zhang, X.
    Jiao, M.
    Lv, J.
    Hao, J.
    Kong, Q.
    Powiązania:
    https://bibliotekanauki.pl/articles/2087751.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    spermatozoa
    SMGT
    exogenous DNA
    IVF
    Źródło:
    Polish Journal of Veterinary Sciences; 2018, 21, 1; 193-202
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Using drama activities to teach beginner’s French to Chinese students at a tertiary institution in Hong Kong: An exploratory case study
    Autorzy:
    Abenoja, Zarina Marie Krystle M.
    DeCoursey, Matthew
    Powiązania:
    https://bibliotekanauki.pl/articles/780645.pdf
    Data publikacji:
    2019
    Wydawca:
    Uniwersytet im. Adama Mickiewicza w Poznaniu
    Tematy:
    language teaching
    drama activities for L2 learning
    teaching French
    Opis:
    The exam-oriented education system in Hong Kong has created a language learning environment that is largely confined to traditional classroom settings, which may not take best advantage of students’ abilities to relate what they have learnt in class to real-life scenarios. Such learning environments may have implications for the way second language learners learn a new language. Numerous studies suggest that drama activities used in language classrooms can enhance second language learning. These studies put forward tasks that generate pleasant and rewarding experiences, enhance confidence and subsequently increase motivation to learn a language. By focusing on students studying in a beginning French course at a tertiary institution in Hong Kong, this article reports on how drama activities make a target language more enjoyable and easier to recall. Classroom observations and interviews with students (N = 30) revealed that learning French via drama had a number of positive effects on second language learners especially in terms of their confidence. The learning of French through drama may provide a language learning environment that enables students to apply their French language skills more effectively in real-life situations.
    Źródło:
    Studies in Second Language Learning and Teaching; 2019, 9, 4; 711-736
    2083-5205
    2084-1965
    Pojawia się w:
    Studies in Second Language Learning and Teaching
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-14 z 14

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