Results 31 to 40 of about 220,492 (303)

Effect of calcium source on structure and properties of sol–gel derived bioactive glasses [PDF]

, 2012
The aim was to determine the most effective calcium precursor for synthesis of sol–gel hybrids and for improving homogeneity of sol–gel bioactive glasses. Sol–gel derived bioactive calcium silicate glasses are one of the most promising materials for bone
Jones, Julian R., Newport, Robert J., Turdean-Ionescu, Claudia Adriana, Smith, Mark E., Smith, M.E., Martin, R.A., Hanna, John V., Turdean-ionescu, Claudia A., Jones, J.R., Yu, Bobo, Turdean-Ionescu, C.A., Martin, Richard A., Yu, B., Hanna, J.V.   +13 more
core   +1 more source

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

Effect of silver content on the structure and antibacterial activity of silver-doped phosphate-based glasses [PDF]

, 2007
Staphylococcus aureus can cause a range of diseases, such as osteomyelitis, as well as colonize implanted medical devices. In most instances the organism forms biofilms that not only are resistant to the body's defense mechanisms but also display ...
Hope, Chris K., Carroll, Donna L., Knowles, Jonathan C., Pratten, Jonathan, Newport, Robert J., Wilson, Michael, Hope, Chris, Smith, Mark E., Pickup, D. M., Valappil, Sabeel P., Pickup, David M., Valappil, Valappil   +11 more
core   +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

Crystallization of Lanthanide—Ho3+ and Tm3+ Ions Doped Tellurite Glasses [PDF]

, 2022
In the presented work, the tellurite glasses TeO2-WO3-ZnO doped with Tm3+ and Ho3+ ions were prepared by the same glass forming method. X-ray diffraction (XRD) and differential thermal analysis (DTA) techniques were used to study the effects of the ...
Osińska, Katarzyna, Płońska, Małgorzata, Robert Tomala, Tomala, Robert, Plewa, Julian, Julian Plewa, Katarzyna Osińska, Małgorzata Płońska   +7 more
core   +1 more source

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