Results 111 to 120 of about 418,007 (311)

Acoustic and Gamma-ray attenuation studies of K2O-PbO-SiO2 glass system

مجلة بغداد للعلوم
Acoustic and gamma ray investigations of K2O-PbO-SiO2 glass system have been carried out to explore their structure and gamma-ray attenuation properties.
Rajinder Singh Kaundal
doaj   +1 more source

Comparison of X-Ray Attenuation Performance, Antimicrobial Properties, and Cytotoxicity of Silicone-Based Matrices Containing Bi2O3, PbO, or Bi2O3/PbO Nanoparticles [PDF]

Journal of Biomedical Physics and Engineering
Background: Application of the nanomaterials to preparing X-ray shields and successfully treating multiresistant microorganisms has attracted great attention in modern life.Objective: This study aimed to prepare flexible silicone-based matrices ...
Baharak Divband, Zahraa Haleem Al-qaim, Falah H. Hussein, Davood Khezerloo, Nahideh Gharehaghaji   +4 more
doaj   +1 more source

Karl Popper and the Mechanisms of Hydrogen Embrittlement

Advanced Engineering Materials, EarlyView.
Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley   +1 more source

Reversible Loss of Bernal Stacking during the Deformation of Few-Layer Graphene in Nanocomposites

, 2013
The deformation of nanocomposites containing graphene flakes with different numbers of layers has been investigated with the use of Raman spectroscopy. It has been found that there is a shift of the 2D band to lower wavenumber and that the rate of band ...
Novoselov, Kostya S., Li, L, Hinks, JA, Young, Robert J., Haigh, SJ, Warner, JH, Warner, Jamie H., Gong, Lei, Jalil, Rashid, Hinks, Jonathan A., Ding, Feng, Jalil, R, Xu, ZW, Li, Li, Xu, Z, Novoselov, KS, Riaz, Ibtsam, Ding, F, Haigh, Sarah J., Young, Robert J.; id_orcid, Haigh, Sarah J.; id_orcid, Kinloch, Ian A., Kinloch, IA, Gong, L, Xu, Ziwei, Young, RJ, Riaz, I   +26 more
core   +1 more source

Dispersion of Love Waves in a Composite Layer Resting on Monoclinic Half-Space [PDF]

, 2011
Dispersion of Love waves is studied in a fibre-reinforced layer resting on monoclinic half-space. The wave velocity equation has been obtained for a fiber-reinforced layer resting on monoclinic half space.
Sukumar Saha
core   +1 more source

Robust Spot Melting by 3D Spot Arrangements in Electron Beam Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
This work proposes an approach to replace separately melted contours for spot melting in electron beam powder fusion. Adapting the spot arrangements close to the contour combined with stacking yields a comparable surface quality without the inherent challenges of separate contours, as demonstrated, by electron optical images and roughness measurements.
Tobias Kupfer, Lukas Spano, Sebastian Pohl, Carolin Körner, Matthias Markl   +4 more
wiley   +1 more source

Stabilised approximation of interior-layer solutions of a singularly perturbed semilinear reaction-diffusion problem

, 2011
A semilinear reaction–diffusion two-point boundary value problem, whose second-order derivative is multiplied by a small positive parameter ε 2 , is considered. It can have multiple solutions.
NATALIA KOPTEVA (12353197), Natalia Kopteva, Stynes, Martin, Martin Stynes (12583243), Martin Stynes, Kopteva, Natalia   +5 more
core   +1 more source

Investigation of the optical and radiation shielding parameters of erbium-doped zinc sodium tungsten borate glass using MCNP5 simulations

Materials Research Express
This study explores the potential of (20Na _2 O+25ZnO+10WO _3 +(60-x)B _2 O _3 +xEr _2 O _3 where x = 0.1, 0.5, 0.7, and 1 mol%) glass for optical and radiation shielding applications, fabricated using the melt quenching method.
Usman Iliyasu, Mohamad Syazwan Mohd Sanusi, Nor Ezzaty Ahmad   +2 more
doaj   +1 more source

Fostering Innovation: Streamlining Magnetocaloric Materials Research by Digitalization

Advanced Engineering Materials, EarlyView.
Magnetocaloric cooling (MCE) is an environmentally friendly refrigeration method with great potential. Optimizing MCE materials involves the preparation and screening of large quantities of samples, which in turn generates a large amount of data. A digitalization approach is presented that uses ontologies, knowledge graphs, and digital workflows to ...
Simon Bekemeier, Moritz Blum, Luana Caron, Alisa Chirkova, Philipp Cimiano, Basil Ell, Inga Ennen, Michael Feige, Maik Gaerner, Thomas Hilbig, Andreas Hütten, Günter Reiss, Tapas Samanta, Sonja Schöning, Christian Schröder, Lennart Schwan, Chris Taake, Martin Wortmann   +17 more
wiley   +1 more source

Similarity without diffusion: shear turbulent layer damped by buoyancy

, 2006
[Abstract]: The evolution of a turbulent layer generated by velocity shear between two half-spaces of fluid and suppressed by a stable density difference is studied. Initially the layer expands, then shrinks to a point in finite time.
Strunin, D. V.
core   +1 more source