Results 51 to 60 of about 134,722 (288)

Semi-Analytical Methods for Different Problems of Diffraction-Radiation by Vertical Circular Cylinders [PDF]

International Journal of Ocean System Engineering, 2012
As in the other fields of mechanics, analytical methods represent an important analysis tool in marine hydrodynamics. The analytical approach is interesting for different reasons : it gives reference results for numerical codes verification, it gives physical insight into some complicated problems, it can be used as a simplified predesign tool, etc ...
openaire   +1 more source

The use of mo and cu monochromatic radiations for quantitative phase analysis: study of the accuracy [PDF]

, 2016
Cement hydration is a very complex process in which crystalline phases are dissolving in water and after supersaturation hydrated crystalline and amorphous phases precipitate.
Cuesta-Garcia, Ana Maria, García-Aranda, Miguel Ángel, García-Maté, Marta, Gomez-de-la-Torre, Maria de los Angeles, León-Reina, Laura, Santacruz-Cruz, Maria Isabel, Vallcorba, Oriol, Álvarez-Pinazo, Gema   +7 more
core  

Influence of Surface Finish on the Tribological Performance of AlTiBN Coatings Deposited on Forming Tools

Advanced Engineering Materials, EarlyView.
Aluminum and nitride coatings are used in industry because they are hard, resist wear, and protect against oxidation. Adding boron can improve friction behavior and other properties. This study tests coatings on surfaces with different finishes. Results show smoother surfaces perform better, while rough ones wear faster, although coatings can reduce ...
Adrián Claver, Iker Alfonso, Eneko Barba, Javier León, José Antonio García, Iñaki Zalakain, Iván Fernández Martínez, Arley García‐Carrero, Christian Almeyda, Daniel Salcedo   +9 more
wiley   +1 more source

Mean Drift Forces on Vertical Cylindrical Bodies Placed in Front of a Breakwater

Fluids, 2020
This paper presents a numerical and experimental investigation of the second-order steady horizontal and vertical drift forces acting on cylindrical bodies in regular waves. The examined bodies are either kept restrained in front of a vertical breakwater
Dimitrios Konispoliatis, Spyridon Mavrakos   +1 more
doaj   +1 more source

EXCITATIONS OF WAVEGUIDES AND CAVITIES BY ELECTRON FLOWS [PDF]

Радиофизика и электроника, 2015
The equations of excitation of waveguides and resonators by foreign sources are used for solving problems in electrodynamics, microwave and terahertz electronics.
A. A. Kurayev, V. D. Yeryomka, A. O. Rak
doaj   +1 more source

Hydrodynamic Efficiency of a Wave Energy Converter in Front of an Orthogonal Breakwater

Journal of Marine Science and Engineering, 2021
In the present study, the hydrodynamic efficiency of a cylindrical wave energy converter (WEC) of vertical symmetry axis and arranged in front of a reflecting orthogonal breakwater is explored.
Dimitrios N. Konispoliatis, Spyridon A. Mavrakos   +1 more
doaj   +1 more source

An asymptotic form of the reciprocity theorem with applications in x-ray scattering

, 2000
The emission of electromagnetic waves from a source within or near a non-trivial medium (with or without boundaries, crystalline or amorphous, with inhomogeneities, absorption and so on) is sometimes studied using the reciprocity principle.
A. Caticha, A. V. Vinogradov, A. V. Vinogradov, A. V. Vinogradov, Ariel Caticha, D. E. Bilhorn, D. G. Stearns, D. G. Stearns, D. K. G. de Boer, E. Merzbacher, H. A. Lorentz, J. A. Kong, J. A. Stratton, J. C. Kimball, J. Lekner, J. M. Blatt, J. R. Wait, L. Landau, L. Nevot, M. Tegze, M. Tegze, M. von Laue, P. Beckmann, P. M. Len, R. Pynn, S. Dietrich, S. K. Sinha, T. Gog, T. Gog, V. Holy, W. C. Chew, W. Kossel, W. Weber   +32 more
core   +2 more sources

Macromolecular structural dynamics visualized by pulsed dose control in 4D electron microscopy [PDF]

, 2011
Macromolecular conformation dynamics, which span a wide range of time scales, are fundamental to the understanding of properties and functions of their structures.
A. H. Zewail, Barwick, Dobson, Grassucci, Henderson, Kubelka, Kwon, Mao, Michalet, O.-H. Kwon, Onuchic, Park, Shaw, Siqueira, Tarascon, V. Ortalan, Zewail, Zewail, Zhang   +18 more
core   +2 more sources

Understanding and Optimizing Li Substitution in P2‐Type Sodium Layered Oxides for Sodium‐Ion Batteries

Advanced Functional Materials, EarlyView.
This work explores Li‐substituted P2 layered oxides for Na‐ion batteries by crystallographic and electrochemical studies. The effect of lithium on superstructure orderings, on phase transitions during synthesis and electrochemical cycling and on the interplay of O‐ versus TM‐redox is revealed via various advanced techniques, including semi‐simultaneous 
Mingfeng Xu, Giovanni Gammaitoni, Michael Häfner, Eduardo Villalobos‐Portillo, Carlo Marini, Matteo Bianchini   +5 more
wiley   +1 more source

Perspectives of XRF and XANES Applications in Cryospheric Sciences Using Chinese SR Facilities

Condensed Matter, 2018
As an important part of the climate system, the cryosphere, can be studied with a variety of techniques based on laboratory-based or field-portable equipment in order to accumulate data for a better understanding of this portion of the Earth’s ...
Wei Xu, Zhiheng Du, Shiwei Liu, Yingcai Zhu, Cunde Xiao, Augusto Marcelli   +5 more
doaj   +1 more source