Results 131 to 140 of about 280,723 (307)

Low‐Activation Compositionally Complex Alloys for Advanced Nuclear Applications—A Review

open access: yesAdvanced Engineering Materials, EarlyView.
Low‐activation compositionally complex alloys (LACCAs) are advanced metallic materials primarily composed of low‐activation elements, offering advantages such as rapid compliance with operational standards and safe recyclability. This review highlights their potential for extreme high‐temperature irradiation environments as structural materials for ...
Yangfan Wang   +8 more
wiley   +1 more source

The $ \mathbb{C}^* $-action and stratifications of the moduli space of semi-stable Higgs bundles of rank $ 5 $

open access: yesAIMS Mathematics
Let $ X $ be a compact Riemann surface of genus $ g\geq 2 $. The moduli space $ \mathcal{M}(r, d) $ of rank $ r $ and degree $ d $ semi-stable Higgs bundles over $ X $ admitted a stratification, called Shatz stratification, which was defined by the ...
Álvaro Antón-Sancho
doaj   +1 more source

An Examination of Aerosol Jet‐Printed Surface Roughness and its Impact on the Performance of High‐Frequency Electronics

open access: yesAdvanced Engineering Materials, EarlyView.
This study explores aerosol jet‐printed (AJP) surface roughness, its effects on the performance of microwave electronics, and its process contributors. First, an electromagnetic model is vetted for AJP's unique roughness signature. Simulations are built which show process‐induced roughness is as significant as conductor resistivity in driving microwave
Christopher Areias, Alkim Akyurtlu
wiley   +1 more source

Some adjunction properties of ample vector bundles II

open access: yesLe Matematiche, 2001
Let E be a vector bundle of rank r on a projective variety X of dimension n  with only log-terminal singularities. We classify the couples (E,X)  satisfying some conditions. We give some applications in case of sectional genus one.
Hironobu Ishihara
doaj  

Large‐Scale Interlaboratory Study Along the Entire Process Chain of Laser Powder Bed Fusion: Bridging Variability, Standards, and Optimization across Metals and Polymers

open access: yesAdvanced Engineering Materials, EarlyView.
What happens when 32 labs join forces to study nanoparticle‐modified powders? A data‐driven journey through laser powder bed fusion—now openly accessible for the entire additive manufacturing community—is studied. Laser powder bed fusion is a cornerstone technology for additive manufacturing (AM) of metals and polymers, yet challenges in achieving ...
Ihsan Murat Kuşoğlu   +73 more
wiley   +1 more source

Laser Additive Manufacturing of Oxide‐Dispersion‐Strengthened Steels: A Simulation‐Based Comparison Between Powder Bed Fusion and Direct Energy Deposition

open access: yesAdvanced Engineering Materials, EarlyView.
Controlling the size and distribution of dispersoids is essential for optimizing the performance of oxide‐dispersion‐strengthened steels. This study focuses on nanoparticle dispersion and agglomeration during laser additive manufacturing of Fe20Cr alloy reinforced with ZrO 2 nanoparticles. Utilizing multiphysics phase‐field simulations and nanoparticle
Somnath Bharech   +6 more
wiley   +1 more source

Anti-ample bundle, nef vector bundle, big vector bundle [PDF]

open access: yesarXiv
We prove that the direct image of an anti-ample vector bundle is anti-ample under any finite flat morphism of non-singular projective varieties. In the second part we prove some properties of big and nef vector bundles. In particular it is shown that the tensor product of a nef vector bundle with a nef and big vector bundle is again nef and big.
arxiv  

On a Lie Algebraic Characterization of Vector Bundles

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 2012
We prove that a vector bundle π: E→M is characterized by the Lie algebra generated by all differential operators on E which are eigenvectors of the Lie derivative in the direction of the Euler vector field.
Pierre B.A. Lecomte   +2 more
doaj   +1 more source

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