Results 101 to 110 of about 1,219,804 (296)

Flexural Behavior of 3D‐Printed Porous Bouligand‐Structured Polymers: Influence of Pitch Angle and Porosity

open access: yesAdvanced Engineering Materials, EarlyView.
This study examines how helicoidal architectures with different porosities respond to bending. Adjusting layer angle and spacing in 3D‐printed polymers reveals clear tradeoffs between stiffness, strength, and energy absorption. Experiments and simulations highlight designs that distribute stress effectively, offering pathways for optimizing lightweight
Praveenkumar Subhash Patil   +2 more
wiley   +1 more source

High-resolution rotation curves of low surface brightness galaxies

open access: yes, 2000
High-resolution H alpha rotation curves are presented for five low surface brightness galaxies. These H alpha rotation curves have shapes different from those previously derived from H I observations, probably because of the higher spatial resolution of ...
Trewhella, M, Swaters, RA, Madore, E
core   +1 more source

New explanation for accelerated expansion and flat galactic rotation curves

open access: yesEuropean Physical Journal C: Particles and Fields, 2020
Employing the non-additive Tsallis entropy, $$S\sim A^{\beta }$$ S∼Aβ , for the large-scale gravitational systems, we disclose that in the cosmological scales both the Friedmann equation and the equation of motion for Newtonian cosmology get modified ...
Ahmad Sheykhi
doaj   +1 more source

General Relativistic Rotation Curves in a Post-Newtonian Light

open access: yes, 2008
Rakic A, Schwarz D. General Relativistic Rotation Curves in a Post-Newtonian Light. In: PoS.
Rakic, Aleksandar   +1 more
core  

Density Measurement of Irradiated and Nonirradiated Zirconium Oxide by Ptychographic X‐Ray Computed Tomography (PXCT)

open access: yesAdvanced Engineering Materials, EarlyView.
Mass density governs the protective behavior of oxide layers on nuclear fuel cladding. Ptychographic X‐ray computed tomography measures zirconium oxide grown on Zircaloy‐4 under reactor and autoclave conditions, revealing nearly identical bulk densities of 5.1 ± 0.80 g cm−3.
Okan Yetik   +9 more
wiley   +1 more source

Effects of spacetime anisotropy on the galaxy rotation curves

open access: yes, 2013
The observations on galaxy rotation curves show significant discrepancies from the Newtonian theory. This issue could be explained by the effect of the anisotropy of the spacetime.
Xin Li   +4 more
core   +1 more source

Influence of Scan Strategies in Electron Beam Powder Bed Fusion on Solidification, Microstructure, and High‐Temperature Compressive Properties of γ′‐Strengthened Inconel 738LC

open access: yesAdvanced Engineering Materials, EarlyView.
Experiments and thermophysical simulations were conducted to investigate the electron beam powder bed fusion electron beam (PBF‐EB/M) process for the γ′‐strengthened nickel‐based superalloy Inconel 738LC. The results demonstrate the impact of process‐induced microstructural variations on high‐temperature mechanical behavior, providing a basis for ...
Jan Niklas Petenati   +11 more
wiley   +1 more source

On the automatic folding of optical rotation curves

open access: yes, 1999
. Mathewson, Ford and Buchhorn (1992, MFB hereafter) published the unreduced data for the opti-cal rotation curves of 967 southern sky spiral galaxies. Recognizing that accurate dynamical modelling of spiral galaxies required the availability of a large ...
D. F. Roscoe
core   +1 more source

Distinct Microstructural Characteristic Lengths Defining Notch Fatigue Crack Initiation and Propagation, and Defect Tolerance in Advanced Steels

open access: yesAdvanced Engineering Materials, EarlyView.
Schematic representation of modes of microcrack nucleation, growth and temporary arrestment at different boundaries, with the criteria for crack propagation in three scenarios: (1) large notch, (2) defect/small sharp notch, and (3) long crack. This work revisits and integrates results on the fatigue behavior of advanced bainitic steels (in particular ...
Lucia Morales‐Rivas
wiley   +1 more source

On Rotation Curve Analysis

open access: yes, 2018
An analysis of analytical methods used for computing galactic masses on the basis of rotation curves (Saari 2015) is shown to be flawed.
openaire   +2 more sources

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