Results 61 to 70 of about 14,432 (265)

Szegő kernel asymptotics for high power of CR line bundles and Kodaira embedding theorems on CR manifolds [PDF]

open access: yesMemoirs of the American Mathematical Society, 2018
Let X X be an abstract not necessarily compact orientable CR manifold of dimension
openaire   +2 more sources

Oxidation behaviour of NiAl intermetallics with embedded Cr and Mo

open access: yesCorrosion Science, 2020
The isothermal oxidation of directionally solidified NiAl-34Cr and NiAl alloys with embedded Cr bar and Mo wire were studied in a thermobalance at 800 °C, 1200 °C and 1300 °C for 50 h (Ar/ 13 vol.% O$_{2}$). NiAl-Cr showed formation of a continuous Al$_{2}$O$_{3}$-Cr$_{2}$O$_{3}$ solid solution in the vicinity of the interface of NiAl and Cr in which ...
Geramifard, Golnar   +3 more
openaire   +2 more sources

Cumulative Social Disadvantage and Disease Activity in Juvenile Idiopathic Arthritis: A Childhood Arthritis and Rheumatology Research Alliance Registry Study

open access: yesArthritis Care &Research, EarlyView.
Objective Social determinants of health (SDOH) contribute to juvenile idiopathic arthritis (JIA) disparities, but most studies have assessed SDOH independently rather than cumulatively across individual, family, and neighborhood levels. Using a socioecological framework, we investigated the relationship among cumulative social disadvantage ...
William Daniel Soulsby   +448 more
wiley   +1 more source

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

open access: yesAdvanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth   +6 more
wiley   +1 more source

Tackling Few-Shot Challenges in Automatic Modulation Recognition: A Multi-Level Comparative Relation Network Combining Class Reconstruction Strategy

open access: yesSensors
Automatic Modulation Recognition (AMR) is a key technology in the field of cognitive communication, playing a core role in many applications, especially in wireless security issues.
Zhao Ma   +4 more
doaj   +1 more source

A Comparative Study on Cu2+, Zn2+, Ni2+, Fe3+, and Cr3+ Metal Ions Removal from Industrial Wastewaters by Chitosan-Based Composite Cryogels

open access: yesMolecules, 2020
Materials coming from renewable resources have drawn recently an increased attention in various applications as an eco-friendly alternative in the synthesis of novel functional materials.
Doina Humelnicu   +3 more
doaj   +1 more source

Null electromagnetic fields and relative CR embeddings

open access: yes, 2001
26 pages, 1 figure keywords: CR manifolds; CR embeddings; null electromagnetic fields; shear-free congruences; twistor ...
Holland, Jonathan Earl, Sparling, George
openaire   +2 more sources

Creating Ti–Fe α/β Alloys by Diffusion‐Driven Solid‐State Processing

open access: yesAdvanced Engineering Materials, EarlyView.
This study proposes making alloys containing fast diffusing elements that are difficult to produce by ingot metallurgy, by diffusion‐driven solid‐state HIP processing of elemental powders and low‐temperature homogenisation. Here, novel Fe‐Ti α–β alloys are formed having fine α–β lamellae, a small β prior grain size without significant intermetallics ...
Jiaqi Xu   +10 more
wiley   +1 more source

Simultaneous enhancement of CO2 adsorption capacity and kinetics on a novel micro-mesoporous MIL-101(Cr)-based composite: Experimental and DFT study

open access: yesJournal of CO2 Utilization
MIL-101(Cr), a class of metal-organic framework, is a potential candidate for CO2 capture applications because of its high capacity of adsorption and separation capability.
Mohammad Bazmi   +7 more
doaj   +1 more source

Super-rigidity for CR embeddings of real hypersurfaces into hyperquadrics

open access: yesAdvances in Mathematics, 2008
Let $Q^N_l\subset \bC\bP^{N+1}$ denote the standard real, nondegenerate hyperquadric of signature $l$ and $M\subset \bC^{n+1}$ a real, Levi nondegenerate hypersurface of the same signature $l$. We shall assume that there is a holomorphic mapping $H_0\colon U\to \bC\bP^{N_0+1}$, where $U$ is some neighborhood of $M$ in $\bC^{n+1}$, such that $H_0(M ...
Baouendi, M.S.   +2 more
openaire   +3 more sources

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