Results 141 to 150 of about 4,333,950 (402)

The Iron abundance in Galactic Planetary Nebulae

open access: yes, 2009
We constrain the iron abundance in a sample of 33 low-ionization Galactic planetary nebulae (PNe) using [Fe III] lines and correcting for the contribution of higher ionization states with ionization correction factors (ICFs) that take into account ...
A. Mampaso   +57 more
core   +1 more source

Revisiting Stability Criteria in Ball‐Milled High‐Entropy Alloys: Do Hume–Rothery and Thermodynamic Rules Equally Apply?

open access: yesAdvanced Engineering Materials, Volume 27, Issue 6, March 2025.
The stability criteria affecting the formation of high‐entropy alloys, particularly focusing in supersaturated solid solutions produced by mechanical alloying, are analyzed. Criteria based on Hume–Rothery rules are distinguished from those derived from thermodynamic relations. The formers are generally applicable to mechanically alloyed samples.
Javier S. Blázquez   +5 more
wiley   +1 more source

Iron and Immunity

open access: yesAnnual Review of Phytopathology, 2017
Iron is an essential nutrient for most life on Earth because it functions as a crucial redox catalyst in many cellular processes. However, when present in excess iron can lead to the formation of harmful hydroxyl radicals. Hence, the cellular iron balance must be tightly controlled.
Verbon, E.H.   +5 more
openaire   +4 more sources

A Different Perspective on the Solid Lubrication Performance of Black Phosphorous: Friend or Foe?

open access: yesAdvanced Engineering Materials, EarlyView.
Researchers investigate black phosphorous (BP) as a standalone solid lubricant coating through ball‐on‐disc linear‐reciprocating sliding experiments in dry conditions. Testing on different metals shows BP doesn't universally reduce friction and wear. However, it achieves 33% friction reduction on rougher iron surfaces and 23% wear reduction on aluminum.
Matteo Vezzelli   +5 more
wiley   +1 more source

Enhancing Corrosion Resistance and Mechanical Strength of 3D‐Printed Iron Polylactic Acid for Marine Applications via Laser Surface Texturing

open access: yesAdvanced Engineering Materials, EarlyView.
Laser surface texturing significantly improves the corrosion resistance and mechanical strength of 3D‐printed iron polylactic acid (Ir‐PLA) for marine applications. Optimal laser parameters reduce corrosion by 80% and enhance tensile strength by 25% and ductility by 15%.
Mohammad Rezayat   +6 more
wiley   +1 more source

Based on Experimental Research and Theoretical Analysis of the Effect of Ore Structure of Metal Mine on Intelligent Photoelectric Pre-separation

open access: yesKuangchan zonghe liyong
This is an article in the field of mining engineering. Aiming at the raw ore mined from Hushugou iron mine, Hushugou copper mine and Xiaoliugou tungsten mine of Jiuquan Iron and Steel Co., Ltd., the experimental study of pre separation and tailing is ...
Lei ZHANG   +3 more
doaj   +1 more source

Receipt from Hecla Iron Works [PDF]

open access: yes, 1898
https://digitalcommons.salve.edu/goelet-new-york/1188/thumbnail ...
Hecla Iron Works
core   +1 more source

Phase Separation and Magnetic Order in K-doped Iron Selenide Superconductor

open access: yes, 2011
Alkali-doped iron selenide is the latest member of high Tc superconductor family, and its peculiar characters have immediately attracted extensive attention. We prepared high-quality potassium-doped iron selenide (KxFe2-ySe2) thin films by molecular beam
A Ricci   +35 more
core   +1 more source

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