Results 41 to 50 of about 228,673 (302)

Practical and Accurate Evaluation of Numerical Aperture and Beam Quality Factor in Photonic Crystal Fibers by Mechanical Learning

IEEE Photonics Journal
This paper presents a convolutional neural network (CNN) model, enhanced with the convolutional block attention module (CBAM), designed to accurately predict the beam quality factor M2, and numerical aperture (NA) of photonic crystal fibers.
Mengda Wei, Meisong Liao, Liang Chen, Yinpeng Liu, Wen Hu, Lidong Wang, Dongyu He, Tianxing Wang, Shizi Yu, Weiqing Gao   +9 more
doaj   +1 more source

Physical, mechanical, and gamma ray shielding properties of the Bi2O3–BaO–B2O3–ZnO–As2O3–MgO–Na2O glass system

Open Chemistry, 2023
This study provides insights into the effects of Bi2O3 on the physical, mechanical, and gamma ray shielding properties of Bi2O3–BaO–B2O3–ZnO–As2O3–MgO–Na2O glasses.
Aloraini Dalal Abdullah, Almuqrin Aljawhara H., Abualsayed Mohammad Ibrahim, Kumar Ashok   +3 more
doaj   +1 more source

Structure and Electrochemical Performance of Glasses in the Li₂O-B₂O₃-V₂O₅-MoO₃ System

Inorganics
Applying the melt quenching method (cooling rate 101–102 K/s), new multicomponent vanadate glasses were synthesized, containing different amounts of MoO3 at the expense of B2O3 with the composition 20Li2O:(30 − x)B2O3:50V2O5:xMoO3, x = 10, 20 mol%.
Margarita Milanova, Xinhao Yang, Pamela Vargas, Nataly Carolina Rosero-Navarro, Ruzha Harizanova, Bojidar Jivov, Lyubomir Aleksandrov, Reni Iordanova, Maya Shopska, Savina Koleva   +9 more
doaj   +1 more source

Multiple time scales in the microscopic dynamics of simple and complex liquids as studied by radiation scattering

Condensed Matter Physics, 2008
Experimental investigations into the time-scales spanned by the microscopic dynamics of simple (metallic) and molecular liquids, as explored by neutron scattering and muon spin rotation experiments are reviewed.
F.J.Bermejo, F.Fernandez-Alonso, C.Cabrillo   +2 more
doaj   +1 more source

Richard Kerner’s Path Integral Approach Aims to Understand the Self-Organized Matter Agglomeration and Its Translation into the Energy Landscape Kinetics Paradigm

Axioms, 2023
Matter grows and self-assembles to produce complex structures such as virus capsids, carbon fullerenes, proteins, glasses, etc. Due to its complexity, performing pen-and-paper calculations to explain and describe such assemblies is cumbersome. Many years
Gerardo G. Naumis
doaj   +1 more source

Mechanical relaxation in glasses and at the glass transition [PDF]

Physical Review B, 2001
The Gilroy-Phillips model of relaxational jumps in asymmetric double-well potentials, developed for the Arrhenius-type secondary relaxations of the glass phase, is extended to a formal description of the breakdown of the shear modulus at the glass transition, the flow process.
openaire   +3 more sources

Studies of the electronic properteis of some transition metal ion glasses [PDF]

, 1991
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.Three series of glasses were prepared and studied.
Feridoonian, Sadegh
core   +6 more sources

Theories of glass formation and the glass transition [PDF]

Reports on Progress in Physics, 2014
This key-issues review is a plea for a new focus on simpler and more realistic models of glass-forming fluids. It seems to me that we have too often been led astray by sophisticated mathematical models that beautifully capture some of the most intriguing features of glassy behavior, but are too unrealistic to provide bases for predictive theories.
openaire   +5 more sources

Luminescent glasses in art [PDF]

In this study the application of luminescent glasses under UV light in artworks is explored. Several lanthanide oxides were used in the glass composition to obtain different colours.
Almeida, Teresa, Matos, António Pires de, Antunes, Aquino, Oliveira, Rosa Maria de, Ruivo, Andreia   +4 more
core   +1 more source

Do atmospheric aerosols form glasses? [PDF]

, 2008
Zobrist B, Marcolli C, Pedernera DA, Koop T. Do atmospheric aerosols form glasses? ATMOSPHERIC CHEMISTRY AND PHYSICS. 2008;8(17):5221-5244.A new process is presented by which water soluble organics might influence ice nucleation, ice growth, chemical ...
Koop, Thomas, B. Zobrist, D. A. Pedernera, Koop, T., Koop, Thomas ; https://orcid.org/, Pedernera, D. A., Marcolli, C., C. Marcolli, T. Koop, Marcolli, Claudia, Pedernera, D.A., Zobrist, Bernhard, Zobrist, B.   +12 more
core   +2 more sources