Results 51 to 60 of about 11,278,454 (337)

The Effects of Sintering Temperature and Pressure on the Sintering Behavior of Hydroxyapatite Powder Prepared by Spark Plasma Sintering

open access: yesJournal of Biomechanical Science and Engineering, 2008
The sintering behaviors and resulting properties of hydroxyapatite (HA) were studied by employing Spark plasma sintering (SPS) process. An As-received HA powder was sintered and the sintering pressure was set as 22.3MPa, 44.6MPa and 66.9MPa respectively.
Shufeng LI   +3 more
doaj   +1 more source

Encircling the dark: constraining dark energy via cosmic density in spheres

open access: yes, 2016
The recently published analytic probability density function for the mildly non-linear cosmic density field within spherical cells is used to build a simple but accurate maximum likelihood estimate for the redshift evolution of the variance of the ...
Bernardeau, F.   +4 more
core   +1 more source

Laser Sintering of Stainless Steel using Resin Powder [PDF]

open access: yes, 2005
We tried laser sintering of 316L stainless steel powder using resin powder. The laser sintering conditions such as laser power, scan speed and scan pitch with a YAG laser, and the influence of additional resin powder on the density and the tensile ...
Imai, Y., Kyogoku, H., Shiraishi, K.
core   +1 more source

The Effects of Selective Laser Melting Process Parameters on Relative Density of the AlSi10Mg Parts and Suitable Procedures of the Archimedes Method

open access: yesApplied Sciences, 2019
In view of the importance of accurately measuring the relative density of a selective laser melted (SLMed) part for optimizing the selective laser melting (SLM) processing parameters, suitable procedures of the Archimedes method considering the surface ...
Shigang Bai   +3 more
semanticscholar   +1 more source

Variational QMC study of a Hydrogen atom in jellium with comparison to LSDA and LSDA-SIC solutions

open access: yes, 2007
A Hydrogen atom immersed in a finite jellium sphere is solved using variational quantum Monte Carlo (VQMC). The same system is also solved using density functional theory (DFT), in both the local spin density (LSDA) and self-interaction correction (SIC ...
Andrew I. Duff   +6 more
core   +1 more source

Improvement of Short-Circuit Tolerance of Garnet Type Solid Electrolyte Li6.4La3Zr1.4Ta0.6O12 by Li2WO4 and Al2O3 Sintering Aids and La Deficiency

open access: yesElectrochemistry
Garnet-type Li6.4La3Zr1.4Ta0.6O12 (LLZT) is one of the most promising solid electrolytes for all solid-state batteries due to its relatively high Li-ion conductivity and electrochemical stability against Li metal anode. However, the presence of pores and
Yuya KONO   +7 more
doaj   +1 more source

Correlation of Energy Density and Manufacturing Variables of AA6061 through Laser Powder Bed Fusion and Its Effect on the Densification Mechanism

open access: yesMetals, 2023
Aluminum alloy processing via additive manufacturing (AM) technologies has increased in usage during the last decade. AM now enables manufacturing complex geometries not previously achieved through traditional manufacturing. Aluminum is usually processed
Catalina Jaramillo-Isaza   +4 more
doaj   +1 more source

Graviton mass and total relative density of mass Omega_tot in Universe

open access: yes, 2003
It is noticed that the total relative density of mass in the Universe Omega_tot should exceed 1, i.e. Omega_tot=1+f^2/6 according to the field relativistic theory of gravity (RTG), which is free of the cosmological singularity and which provides the ...
A. A. Logunov   +15 more
core   +1 more source

Partitioning Graph Clustering With User-Specified Density

open access: yesIEEE Access, 2023
Graph clustering has attracted many interests in recent years, with numerous applications ranging from the clustering of computer networks to the detection of social communities.
Rohi Tariq   +3 more
doaj   +1 more source

Structural Properties and Relative Stability of (Meta)Stable Ordered, Partially-ordered and Disordered Al-Li Alloy Phases [PDF]

open access: yes, 2012
We resolve issues that have plagued reliable prediction of relative phase stability for solid-solutions and compounds. Due to its commercially important phase diagram, we showcase Al-Li system because historically density-functional theory (DFT) results ...
A. J. McAlister   +9 more
core   +4 more sources

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