Autor: Liu, M. S. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Multifunctional interphases for polymeric engineering products and smart devices
Wielofunkcyjne warstwy dla polimerowych wyrobów i urządzeń inteligentnych
Autorzy:: Gutowski, V. S.
Toikka, G.
Liu, M. S.
Li, S.
Powiązania:: https://bibliotekanauki.pl/articles/176055.pdf
Data publikacji:: 2015
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: polymers
polyethyleneimines
aminosilanes
protonation
surface conductivity
electrostatic deposition
adhesion
coating
polimery
polietylenoiminy
aminosilany
protonowanie
przewodnictwo powierzchniowe
osadzanie elektrostatyczne
adhezja
powłoka
Opis:: The ability to control interactions between polymeric substrate and single molecules including successful placement of molecules in desired location at technologically useful conformation and spatial architecture provides a platform for designing functional surfaces for high-tech engineered products and smart devices. Subsequent ability to control interactions between arrays of immobilized molecules in the form of molecular brushes and interacting materials such as fluids, solids or bioactive materials such as cells and tissues facilitates the control of adhesion and fracture properties of interfaces for structurally bonded or coated materials or enables control of other properties such as surface conductivity of flexible films, fibres and fabrics for electronic or energy harvesting applications, live cells propagation in biomedical sensors or devices and for restorative medicine applications. This paper discusses theoretical and practical aspects of surface grafted molecular brushes at controlled surface density, spatial geometry and chemical functionality which facilitate more than 1000-fold strength increase of bonded assemblies in comparison with unmodified substrates to the point of achieving 100% cohesive fracture of substrates or adhesives, as detailed in our earlier publications. The same molecules exhibiting an in-built electron conductivity facilitate achieving a 108-fold increase in polymer surface conductivity.
Analiza oddziaływania podłoża polimerowego i pojedynczych cząsteczek dotyczy ich rozmieszczenia dla ustalonego położenia w celu uzyskania korzystnej technologicznie konfiguracji. Stanowi ona podstawę do projektowania struktury geometrycznej powierzchni zaawansowanych technologicznie wyrobów i urządzeń inteligentnych. Określenie stopnia wzajemnego oddziaływania pomiędzy układami cząsteczek w postaci „szczotek molekularnych” – substancjami w stanie ciekłym i stałym lub materiałami bioaktywnymi, m.in. komórkami i tkankami, umożliwia kontrolę przylegania i pękania materiałów połączonych. Także kontrolę innych właściwości m.in. przewodnictwa powierzchniowego wytworzonych warstw lub włókien oraz rozprzestrzeniania się komórek w czujnikach i urządzeniach biomedycznych. W pracy przedstawiono teoretyczne i praktyczne zagadnienia z obszaru „szczotek molekularnych”. Uwzględniono kontrolę ich gęstości powierzchniowej, geometrii i właściwości chemicznych. Umożliwi to zwiększenie wytrzymałości łącznych elementów ponad 1000-krotnie w porównaniu z podłożem niemodyfikowanym. Zapewni także pękanie kohezyjne podłoża lub warstwy klejów.
Źródło:: Advances in Manufacturing Science and Technology; 2015, 39, 1; 5-15
0137-4478
Pojawia się w:: Advances in Manufacturing Science and Technology
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 2.

Tytuł:: Elimination of dominated strategies and inessential players
Autorzy:: Kaneko, M.
Liu, S.
Powiązania:: https://bibliotekanauki.pl/articles/406320.pdf
Data publikacji:: 2015
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:: dominated strategies
inessential players
iterated elimination
order-independence
estimation of initial games
Opis:: We study the process, called the IEDI process, of iterated elimination of (strictly) dominated strategies and inessential players for finite strategic games. Such elimination may reduce the size of a game considerably, for example, from a game with a large number of players to one with a few players. We extend two existing results to our context; the preservation of Nash equilibria and orderindependence. These give a way of computing the set of Nash equilibria for an initial situation from the endgame. Then, we reverse our perspective to ask the question of what initial situations end up at a given final game. We assess what situations underlie an endgame. We give conditions for the pattern of player sets required for a resulting sequence of the IEDI process to an endgame. We illustrate our development with a few extensions of the battle of the sexes.
Źródło:: Operations Research and Decisions; 2015, 25, 1; 33-54
2081-8858
2391-6060
Pojawia się w:: Operations Research and Decisions
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 3.

Tytuł:: Fast leak detection and location of gas pipelines based on an adaptive particle filter
Autorzy:: Liu, M.
Zang, S.
Zhou, D.
Powiązania:: https://bibliotekanauki.pl/articles/908443.pdf
Data publikacji:: 2005
Wydawca:: Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:: rurociąg gazowy
diagnozowanie wycieku
lokalizowanie wycieku
filtr cząsteczkowy
gas pipeline
leak detection and location
particle filter
Opis:: Leak detection and location play an important role in the management of a pipeline system. Some model-based methods, such as those based on the extended Kalman filter (EKF) or based on the strong tracking filter (STF), have been presented to solve this problem. But these methods need the nonlinear pipeline model to be linearized. Unfortunately, linearized transformations are only reliable if error propagation can be well approximated by a linear function, and this condition does not hold for a gas pipeline model. This will deteriorate the speed and accuracy of the detection and location. Particle filters are sequential Monte Carlo methods based on point mass (or “particle”) representations of probability densities, which can be applied to estimate states in nonlinear and non-Gaussian systems without linearization. Parameter estimation methods are widely used in fault detection and diagnosis (FDD), and have been applied to pipeline leak detection and location. However, the standard particle filter algorithm is not applicable to time-varying parameter estimation. To solve this problem, artificial noise has to be added to the parameters, but its variance is difficult to determine. In this paper, we propose an adaptive particle filter algorithm, in which the variance of the artificial noise can be adjusted adaptively. This method is applied to leak detection and location of gas pipelines. Simulation results show that fast and accurate leak detection and location can be achieved using this improved particle filter.
Źródło:: International Journal of Applied Mathematics and Computer Science; 2005, 15, 4; 541-550
1641-876X
2083-8492
Pojawia się w:: International Journal of Applied Mathematics and Computer Science
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 4.

Tytuł:: Strong convergence theorem of a hybrid projection algorithm for a family of quasi-φ-asymptotically nonexpansive mappings
Autorzy:: Tang, J. F.
Chang, S. S.
Liu, M.
Liu, J. A.
Powiązania:: https://bibliotekanauki.pl/articles/255543.pdf
Data publikacji:: 2010
Wydawca:: Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:: quasi-phi-asymptotically nonexpansive mapping
asymptotically regular mapping
hybrid projection iterative algorithm
strong convergence theorem
Opis:: The main purpose of this paper is by using a new hybrid projection iterative algorithm to prove some strong convergence theorems for a family of quasi-φ-asymptotically nonexpansive mappings. The results presented in the paper improve and extend the corresponding results announced by some authors.
Źródło:: Opuscula Mathematica; 2010, 30, 3; 341-348
1232-9274
2300-6919
Pojawia się w:: Opuscula Mathematica
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 5.

Tytuł:: Palaeoenvironment of late Neogene lacustrine sediments at the Gray Fossil Site, Tennessee, USA
Autorzy:: Worobiec, E.
Liu, Y.S.
Zavada, M. S.
Powiązania:: https://bibliotekanauki.pl/articles/191791.pdf
Data publikacji:: 2013
Wydawca:: Polskie Towarzystwo Geologiczne
Tematy:: palaeopalynology
sinkhole
non-pollen palynomorphs
NPPs
freshwater algae
palaeoenvironment
Neogene
North America
Opis:: A new palaeopalynological investigation was conducted on 15 samples from four test-pits at the Gray Fossil Site (Bear Pit, Elephant Pit, Test Pit 2-2010, and Rhino Pit). In total, 50 morpho-species of miospores (including five species of spores, eight species of gymnosperm pollen, and 37 species of an giosperm pollen) and 18 morpho-species of fresh water algal micro-remains were identified. One new morphological species, related to zygospores of the Zygnemataceae, Stigmozygodites grayensis sp. nov., is proposed. The assemblage of fossil algae recovered provides in sights into the palaeoenvironmental conditions of the uppermost (125 cm) part of the Gray Fossil Site sedimentary cover, deposited after the formation of a number of sink holes, and the fill of the palaeosinkholes. Most of the algae identified prefer meso- to eutrophic conditions and are characteristic of stagnant to slowly flowing shallow fresh water. Therefore, the lacustrine fossiliferous sediments at the Gray Fossil Site represent pond deposits. The palaeopalynological analysis revealed differences in the composition of the miospore and algal assemblages of the pits studied, suggesting that the Test Pit 2-2010, Bear, and Elephant pits are similar and may have been formed in the same pond, while the presence of a higher percentage of algae in the Rhino Pit may indicate sedimentation in a separate waterbody.
Źródło:: Annales Societatis Geologorum Poloniae; 2013, 83, 1; 51-63
0208-9068
Pojawia się w:: Annales Societatis Geologorum Poloniae
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 6.

Tytuł:: A New Star-Like SurfaceTexture for Enhanced Hydrodynamic Lubrication Performance
Autorzy:: Uddin, M. S.
Liu, Y. W.
Shankar, S.
Powiązania:: https://bibliotekanauki.pl/articles/356465.pdf
Data publikacji:: 2017
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: surface texturing
friction
film pressure
numerical modelling
Reynolds equation
Opis:: This paper presents a numerical modelling and optimization of a new ‘star-like’ geometric texture shape with an aim to improve tribological performance. Initial studies showed that the triangle effect is the most dominant in reducing the friction. Motivated with this, a ‘star-like’ texture shape consisting of a series of triangular spikes around the centre of the texture is proposed. It is hypothesised that by increasing the triangular effect on a texture shape, the converging micro-wedge effect is expected to increase, hence increasing the film pressure and reducing the friction. Using the well-known Reynolds boundary conditions, numerical modelling of surface texturing is implemented via finite difference method. Simulation results showed that the number of apex points of the new ‘star-like’ texture has a significant effect on the film pressure and the friction coefficient. A 6-pointed texture at a texture density of 0.4 is shown to be the optimum shape. The new optimum star-like texture reduces the friction coefficient by 80%, 64.39%, 19.32% and 16.14%, as compared to ellipse, chevron, triangle and circle, respectively. This indicates the potential benefit of the proposed new shape in further enhancing the hydrodynamic lubrication performance of slider bearing contacts.
Źródło:: Archives of Metallurgy and Materials; 2017, 62, 3; 1863-1869
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 7.

Tytuł:: Reducing the salinity impact on soilless culture of tomatoes using supplemental Ca and foliar micronutrients
Autorzy:: Saleh, S.
Liu, G.
Liu, M.
Liu, W.
Gruda, N.
He, H.
Powiązania:: https://bibliotekanauki.pl/articles/12688394.pdf
Data publikacji:: 2019
Wydawca:: Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Tematy:: plant cultivation
tomato
Solanum lycopersicum
soilless culture
vegetative growth
fruit quality
yield
calcium supplementation
foliar application
foliar nutrition
micronutrient
salinity impact
salt stress
physiological parameter
Opis:: Salt stress is known as one of the most severe abiotic factors limiting the plant production all over the world. In this study, three additives: (i) supplemental Ca (5 mmol L–1) to nutrient solution, (ii) foliar application of micronutrients (Fe, Mn and Zn at 60, 160 and 110 mg L–1, respectively), and (iii) combination of both of them were evaluated aiming to reduce the negative impact of salt stress on tomato plants cultivated in a soilless culture and improve the internal quality of fruits. The obtained results show that salinity reduced vegetative growth and physiological parameters, fruit yield and its components, and even more lowered fruit market classification of tomatoes. Salinity treatment reduced most of essential macro- and micronutrients in tomato fruit, whilst Na content was increased. Tomato productivity and fruit quality were ameliorated under saline conditions by increasing Ca into nutrient solution and applying a foliar application of micronutrients. A combination of both additives ranked the first to alleviate the adverse effects of salinity on tomatoes, followed by solo supplemental Ca into saline nutrient solution. On the other hand, the internal fruit quality of antioxidant compounds, such as vitamin C, lycopene, α-carotene, β-carotene and lutein as well as acidity, total soluble solid and dry matter percent, were increased under saline conditions.
Źródło:: Acta Scientiarum Polonorum. Hortorum Cultus; 2019, 18, 3; 187-200
1644-0692
Pojawia się w:: Acta Scientiarum Polonorum. Hortorum Cultus
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 8.

Tytuł:: Mitigation of voltage flicker by superconducting synchronous Condenser (SUPERVAR)
Autorzy:: Tsai, S. S.
Liu, Y.
Ingram, M. R.
Powiązania:: https://bibliotekanauki.pl/articles/262647.pdf
Data publikacji:: 2005
Wydawca:: Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie
Tematy:: superconductivity
synchronous condenser
voltage flicker
power quality
Opis:: Voltage flicker caused by the electric arc furnace (EAF) and the mitigation using the superconducting synchronous condenser (SuperVAR) by the American Superconductor Corp. are considered in this paper. The modeling of EAF, SuperVAR and the system used are discussed. Fast reactive power support to reduce voltage flicker problem by an EAF is desirable. The voltage fluctuation amplitude is used as an index to evaluate the effectiveness of SuperVAR for two different MVar levels. At the PCC (point of common coupling) bus, the application of the SuperVAR can improve the voltage flicker by 6% and 19% by applying DC1A type and AC4A type exciter to the SuperVAR. With an DC1A type exciter, the SuperVAR can output only between +1 and -2 MVAR and with an AC4A type exciter the SuperVAR can provide its full rated power (8MVAR) to the system, making the voltage flicker a less severe.
Źródło:: Electrical Power Quality and Utilisation. Journal; 2005, 11, 1; 39-44
1896-4672
Pojawia się w:: Electrical Power Quality and Utilisation. Journal
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 9.

Tytuł:: Effect of Strain Rate on the Microstructure of Warm-Deformed Ultrafined Medium-Carbon Steel
Autorzy:: Yuan, Q.
Xu, G.
Liu, S.
Liu, M.
Hu, H.
Powiązania:: https://bibliotekanauki.pl/articles/355659.pdf
Data publikacji:: 2018
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: warm deformation
medium-carbon steel
ultrafine grain
strain rate
Fe3C
Opis:: In this study, medium-carbon steel was subjected to warm deformation experiments on a Gleeble 3500 thermosimulator machine at temperatures of 550°C and 650°C and strain rates of 0.001 s^-1 to 1 s^-1. The warm deformation behavior of martensite and the effects of strain rate on the microstructure of ultrafine grained medium-carbon steel were investigated. The precipitation behavior of Fe₃C during deformation was analyzed and the results showed that recrystallization occurred at a low strain rate. The average ultrafine ferrite grains of 500 ± 58 nm were fabricated at 550°C and a strain rate of 0.001 s^-1. In addition, the size of Fe₃C particles in the ferrite grains did not show any apparent change, while that of the Fe₃C particles at the grain boundaries was mainly affected by the deformation temperature. The size of Fe₃C particles increased with the increasing deformation temperature, while the strain rate had no significant effect on Fe₃C particles. Moreover, the grain size of recrystallized ferrite decreased with an increase in the strain rate. The effects of the strain rate on the grain size of recrystallized ferrite depended on the deformation temperature and the strain rate had a prominent effect on the grain size at 550°C deformation temperature. Finally, the deformation resistance apparently decreased at 550°C and strain rate of 1 s^-1 due to the maximum adiabatic heating in the material.
Źródło:: Archives of Metallurgy and Materials; 2018, 63, 4; 1805-1813
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 10.

Tytuł:: Influence of pick layouts on the performance of bolter miner cutting head
Autorzy:: Qiao, S.
Wang, A. L.
Xia, Y. M.
Liu, Z. Z.
Liu, J. S.
Yang, M.
Powiązania:: https://bibliotekanauki.pl/articles/88893.pdf
Data publikacji:: 2018
Wydawca:: Politechnika Wrocławska. Wydział Geoinżynierii, Górnictwa i Geologii. Instytut Górnictwa
Tematy:: optimum
pick layout
bolter miner
FEM
coal-rock cutting
load fluctuation
Opis:: A bolter miner is a new type of mining machinery with cutting and anchoring functions. In order to study the best pick layout of bolter miner cutting head. Based on the constitutive relation of Holmquist-Johnson-Cook (HJC), three simulation models of different cutting heads were established, and the whole crushing process of coal-rock was simulated by finite element method (FEM). The influence of the cutting head on the cutting performance under the condition of different rotational speeds and pick layouts was intensively studied. The results show that the relationship of load fluctuation coefficient among the three pick layouts is as follows: sequential type > hybrid type I > checkerboard type. The circumferential pick layouts can reduce the load fluctuation coefficient of cutting head. The rotational speed from 20 to 40 r/min, the torque linearly decreases with the increase of rotational speed. The rota-tional speed increases from 40 to 50 r/min, the cutting torque is relatively stable. The specific energy of chessboard type is relatively higher than the other three cutting heads. The difference of specific energy between sequential type and hybrid type I is not more than 5.5%, and the reality of the simulation is verified by cutting experiments. The results were successfully applied to the first shield type bolter miner in China.
Źródło:: Mining Science; 2018, 25; 147-160
2300-9586
2353-5423
Pojawia się w:: Mining Science
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Informacja

Wyszukujesz frazę "Liu, M. S." wg kryterium: Autor

Źródło danych

Dostawca treści

Kolekcja

Rok wydania

Wydawca

Temat

Autor

Typ dokumentu

Język