Institution
Warsaw University of Technology
Education•Warsaw, Poland•
About: Warsaw University of Technology is a education organization based out in Warsaw, Poland. It is known for research contribution in the topics: Microstructure & Optical fiber. The organization has 14293 authors who have published 34362 publications receiving 492211 citations. The organization is also known as: Warsaw Polytechnic & Politechnika Warszawska.
Papers published on a yearly basis
Papers
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TL;DR: A series of carbon-based ruthenium catalysts differing in Ru loading (1-32 wt%) was characterised (XRD, TEM, O2 and CO chemisorption) and, after promotion with Ba or Cs or both, was studied in NH3 synthesis as mentioned in this paper.
146 citations
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TL;DR: This paper considers L–fuzzy rough sets as a further generalization of the notion of rough sets, and takes a residuated lattice L as a basic structure.
Abstract: Rough sets were developed by Pawlak as a formal tool for representing and processing information in data tables. Fuzzy generalizations of rough sets were introduced by Dubois and Prade. In this paper, we consider L–fuzzy rough sets as a further generalization of the notion of rough sets. Specifically, we take a residuated lattice L as a basic structure. L–fuzzy rough sets are defined using the product operator and its residuum provided by the residuated lattice L. Depending on classes of binary fuzzy relations, we define several classes of L–fuzzy rough sets and investigate properties of these classes.
146 citations
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TL;DR: This paper focuses specifically on constant-depth rectangular and trapezoidal channels often employed in lab-on-a-chip systems and provides a framework for constructing a simple but elegant biomimetic design rule for hierarchical microfluidic networks.
Abstract: The relationship governing the optimum ratio between the diameters of the parent and daughter branches in vascular systems was first discovered by Murray using the principle of minimum work. This relationship is now known as Murray's law and states that the cube of the diameter of the parent vessel must equal the sum of the cubes of the daughter vessels. For symmetric bifurcations, an important consequence of this geometric rule is that the tangential shear stress at the wall remains constant throughout the vascular network. In the present paper, we extend this important hydrodynamic concept to arbitrary cross-sections and provide a framework for constructing a simple but elegant biomimetic design rule for hierarchical microfluidic networks. The paper focuses specifically on constant-depth rectangular and trapezoidal channels often employed in lab-on-a-chip systems. To validate our biomimetic design rule and demonstrate the application of Murray's law to microfluidic manifolds, a comprehensive series of computational fluid dynamics simulations have been performed. The numerical predictions are shown to be in very good agreement with the theoretical analysis, confirming that the generalised version of Murray's law can be successfully applied to the design of constant-depth microfluidic devices.
146 citations
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TL;DR: In this article, a group of Al-Co-Cr-Fe-Ni alloys was synthesized for diffusion couple experiments that were performed in the temperature range of 1273-1373 K. The measured concentrations profiles were used to determine the tracer diffusion coefficients of the components, using Darken - Manning approach coupled with Levenberg-Marquardt or genetic algorithm methods of optimization.
145 citations
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TL;DR: Thanks to the idea of virtual flux, the direct power control space-vector-modulated (DPC-SVM) and new synchronous double reference frame phase-locked loop approach, the control system is resistant to a majority of line voltage disturbances.
Abstract: Slight hardware and algorithm modifications as well as a higher power ratio of a three-phase pulsewidth-modulation (PWM) rectifier make compensation of neighboring nonlinear power load possible. The active filtering function enlarges the functionality of PWM rectifiers, which decreases the cost of additional installation of compensating equipment. It gives a chance to fulfill both shunt active filter (SAF) and PWM rectifier tasks in a multidrive system by one advanced converter. Thanks to the idea of virtual flux, the direct power control space-vector-modulated (DPC-SVM) and new synchronous double reference frame phase-locked loop approach, the control system is resistant to a majority of line voltage disturbances. This assures proper operation of the system for abnormal and failure grid conditions. Simulation and experimental results have proven excellent performance and verify the validity of the proposed system.
145 citations
Authors
Showing all 14420 results
Name | H-index | Papers | Citations |
---|---|---|---|
Stefano Colafranceschi | 129 | 1103 | 79174 |
Dezso Horvath | 128 | 1283 | 88111 |
Valentina Dutta | 125 | 1179 | 76231 |
Viktor Matveev | 123 | 1212 | 73939 |
Anna Zanetti | 120 | 1488 | 71375 |
Harold A. Scheraga | 120 | 1152 | 66461 |
J. Pluta | 120 | 659 | 52025 |
Adam Ryszard Kisiel | 118 | 691 | 50546 |
Terence G. Langdon | 117 | 1158 | 61603 |
Andrei Starodumov | 114 | 697 | 57900 |
T. Pawlak | 111 | 379 | 42455 |
John D. Pickard | 107 | 628 | 42479 |
W. Peryt | 107 | 376 | 40524 |
William G. Stevenson | 101 | 585 | 57798 |
Anil Kumar | 99 | 2124 | 64825 |