Results 101 to 110 of about 1,514,488 (302)

Possibilities for drag reduction by boundary layer control [PDF]

The mechanics of laminar boundary layer transition are reviewed. Drag possibilities for boundary layer control are analyzed using assumed conditions of transition Reynolds number, inlet loss, number of slots, blower efficiency, and duct losses.
Naiman, I.
core   +1 more source

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth, Tomáš Babinský, Jan Lars Riedel, Wen Hao Kan, Aijun Huang, Martin Heilmaier, Ivo Šulák   +6 more
wiley   +1 more source

Evaluation of radiation shielding properties of the polyvinyl alcohol/iron oxide polymer composite

Journal of Medical Physics, 2017
Context: Lead is the conventional shielding material against gamma/X-rays. It has some limitations such as toxic, high density, nonflexibility, and also bremsstrahlung production during electron interaction.
K Srinivasan, E James Jabaseelan Samuel
doaj   +1 more source

S-wave superconductivity near a surface

, 2003
We study the superconducting order parameter near a surface with the Bogoliubov-de Gennes formalism. For definiteness we use the attractive Hubbard model.
Anderson, de Gennes, F. Marsiglio, Flatté, Giaever, K. Tanaka, Litak, Lynch, Marsiglio, Rowell, Schrieffer, Stojković, Tanaka, Tinkham   +13 more
core   +1 more source

Determination of Some Heavyweight Aggregate Half Value Layer Thickness Used for Radiation Shielding

Acta Physica Polonica A, 2012
A radiation dose above the maximum permissible limit is very dangerous for human being. In radiation shielding, absorbent materials’ properties must be well known. Heavyweight concrete is the most widely used in the world for this aim. The aggregate component of concrete plays an important role in improving concrete properties and this is effect of ...
AKKURT, İskender, Akkaş, A., Mavi, B., Günoǧlu, Kadir, KILINÇARSLAN, Şemsettin, BAŞYİĞİT, Celalettin   +5 more
openaire   +2 more sources

Composition‐Tuned Enhancement of the Anomalous Nernst Effect in FeCo–Pt Thin Films on Rigid and Flexible Substrates

Advanced Engineering Materials, EarlyView.
Disordered (Fe50Co50)1−xPtx thin films exhibit a pronounced anomalous Nernst effect (ANE) with a strong composition dependence on both rigid and flexible substrates. The transverse thermoelectric response peaks near 22.5 at.% Pt, accompanied by enhanced αxy/σxy scaling, thermal transport, and ANE sensitivity.
Mojtaba Mohammadi, Hiroyuki Awano, Kenji Tanabe   +2 more
wiley   +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

DOF phase separation of the Lennard-Jones fcc(111) surface

, 1999
Recent lattice model calculations have suggested that a full-layered crystal surface may undergo, under canonical (particle-conserving) conditions, a preroughening-driven two-dimensional phase separation into two disordered flat (DOF) regions, of ...
Broughton, Broughton, C.S. Jayanthi, Celestini, Celestini, Chen, Chen, Dash, Day, den Nijs, Denier van der Gon, E. Tosatti, F. Celestini, F. Ercolessi, Jagla, Jayanthi, Levi, Mazzeo, Naghizadeh, Nikas, Phillips, Prasad, Prestipino, Prestipino, Prestipino, Rieutord, Rommelse, Rosato, Stoltze, Valkealahti, Weichman, Youn, Youn   +32 more
core   +4 more sources

On the Influence of Antioxidants and Recycled MgO–C Source Material on the Mechanical Properties of Carbon‐Bonded Magnesia Refractories

Advanced Engineering Materials, EarlyView.
The presented study focuses on the fracture behaviour of carbon‐bonded magnesia MgO–C refractories, where environmentally friendly fructose, collagen and lignin serve as temporary binding agents. The partial substitution of the source material with recycled MgO–C reduces the fracture resistance, which can be counteracted by the additional introduction ...
Marc Neumann, Tom Weber, Jana Hubálková, Florian Kerber, Dinesh Kumar Gunasekar, Hans Jelitto, Christos G. Aneziris   +6 more
wiley   +1 more source

Impact of concentration of Bi2O3 on gamma ray shielding efficiency of BaTiO3 composite ceramics

Chemical Physics Impact
This study primary goal is to provide information on the structural changes and improved radiation shielding qualities of BaTiO3 (barium titanate) ceramics that have been added to Bi2O3 (bismuth trioxide) compound, which is made using a solid-state ...
Rama Kumar Nodagala, Tejeswara Rao Ponnada, Balaji Rao Ravuri   +2 more
doaj   +1 more source