Results 31 to 40 of about 146,124 (295)

The Effect of Isothermal Multi-Directional Forging on the Grain Structure, Superplasticity, and Mechanical Properties of the Conventional Al–Mg-Based Alloy

open access: yesMetals, 2019
The current study observed a grain structure evolution in the central part and periphery of the sample of an Al–Mg–Mn-based alloy during isothermal multidirectional forging (IMF) at 350 °C with a cumulative strain of 2.1–6.3 and a ...
Anastasia V. Mikhaylovskaya   +4 more
doaj   +1 more source

The Metal-Poor IMF, Stellar Evolution, and Star Formation Histories [PDF]

open access: yesProceedings of the International Astronomical Union, 2008
AbstractI present an introduction to three important subjects relevant to low metallicity star formation: the IMF, stellar evolution, and star formation histories. I will draw on observations from the LCID (Local Cosmology from Isolated Dwarfs) project to illustrate some of these topics.
openaire   +1 more source

SWMF simulation of field-aligned currents for a varying northward and duskward IMF with nonzero dipole tilt [PDF]

open access: yesAnnales Geophysicae, 2008
This study concentrates on the FACs distribution for the varying northward and duskward interplanetary magnetic field (IMF) conditions when the dipole tilt is nonzero. A global MHD simulation (the Space Weather Modeling Framework, SWMF) has been used
H. Wang, H. Wang, A. J. Ridley, H. Lühr
doaj   +1 more source

Irreversibility of regime shifts in the North Sea

open access: yesFrontiers in Marine Science, 2022
Human impacts can induce ecosystems to cross tipping points and hence unexpected and sudden changes in ecosystem services that are difficult or impossible to reverse. The world´s oceans suffer from cumulative anthropogenic pressures like overexploitation
Camilla Sguotti   +12 more
doaj   +1 more source

Infall Models of Elliptical Galaxies: Further Evidence for a Top-Heavy Initial Mass Function [PDF]

open access: yes, 1997
Chemical and photometric models of elliptical galaxies with infall of primordial gas, and subsequent ejection of processed material via galactic winds, are described.
Gibson, Brad K., Matteucci, Francesca
core   +2 more sources

Intramuscular fat content in different muscles, locations, weights and genotype-sexes and its prediction in live pigs with computed tomography

open access: yesAnimal, 2019
Intramuscular fat (IMF) content depends on sex, genotype and diet and varies with pig growth. The aim of the present work was to determine the evolution of IMF by genotype-sex, muscle and muscle location, to determine relationships between IMF content of
M. Font-i-Furnols, A. Brun, M. Gispert
doaj   +1 more source

Role of clusters of galaxies in the evolution of the metal budget in the Universe

open access: yes, 2003
Using the guidelines on SN element production provided by XMM-Newton, we summarize the results of ASCA observations on the element abundance in groups and clusters of galaxies.
A. Burkert   +14 more
core   +1 more source

ZFIRE: Using H$\alpha$ equivalent widths to investigate the in situ initial mass function at z~2 [PDF]

open access: yes, 2017
We use the ZFIRE survey (http://zfire.swinburne.edu.au) to investigate the high mass slope of the initial mass function (IMF) for a mass-complete (log10(M$_*$/M$_\odot$)~9.3) sample of 102 star-forming galaxies at z~2 using their H$\alpha$ equivalent ...
Alcorn, Leo   +12 more
core   +3 more sources

Evolution of the magnetic field structure outside the magnetopause under radial IMF conditions [PDF]

open access: yesJournal of Geophysical Research: Space Physics, 2017
AbstractWe use the Time History of Events and Macroscale Interactions during Substorms data to investigate the magnetic field structure just outside the magnetopause and its time evolution for radial interplanetary magnetic field (IMF) events. When the magnetic field drapes around the magnetopause in the magnetosheath region, an asymmetric magnetic ...
Gilbert Pi   +7 more
openaire   +2 more sources

On the variation of the Initial Mass Function [PDF]

open access: yes, 2000
(shortened) In this contribution an average or Galactic-field IMF is defined, stressing that there is evidence for a change in the power-law index at only two masses: near 0.5 Msun and 0.08 Msun.
Kroupa, Pavel
core   +2 more sources

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