Results 61 to 70 of about 82,654 (305)

Experimental Evaluation of 100Cr6 Steel Microindented Surfaces Under Lubricated Nonconformal Point Contacts

open access: yesAdvanced Engineering Materials, EarlyView.
The tribological behavior of 100Cr6 steel spheres textured via Vickers microindentation is evaluated under lubricated sliding by varying both dimple size and density. Fine and dense textures significantly reduce friction across all lubrication regimes, while large dimples increase it.
Farideh Davoodi   +3 more
wiley   +1 more source

Low‐Cost, Large‐Scale Nanoporous Metals by Mechanical Alloying, Oxide Reduction, and Dealloying of Powders

open access: yesAdvanced Engineering Materials, EarlyView.
Powder metal processing provides scalable advantages in nanoporous (np) metal development. Mechanical alloying is used to produce unique precursors for hybrid nanopore formation by oxide reduction and dealloying. As demonstrated in np Ag, this approach improves process efficiency while promoting smaller ligaments and larger pores, both of which are ...
Mark A. Atwater, Oliver A. Fowler
wiley   +1 more source

ON HARDY TYPE SPACES IN SOME DOMAINS IN Cn AND RELATED PROBLEMS [PDF]

open access: yesVestnik KRAUNC: Fiziko-Matematičeskie Nauki, 2019
We discuss some new problems in several new mixed norm Hardy type spaces in products of bounded pseudoconvex domains with smooth boundary in Cn and then prove some new sharp decomposition theorems for multifunctional Hardy type spaces in the unit ball ...
R. F. Shamoyan, V.V. Loseva
doaj   +1 more source

A Carleson inequality for $BMOA$ functions with their derivatives on the unit ball [PDF]

open access: yes, 1998
summary:The main purpose of this note is to give a new characterization of the well-known Carleson measure in terms of the integral for $BMOA$ functions with their derivatives on the unit ...
Wulan, Hasi
core  

Resistance Rapid Heating of Aluminum Coatings in an Extreme High Vacuum–Adequate Atmosphere for Hot Stamping

open access: yesAdvanced Engineering Materials, EarlyView.
The subject of this work is the development of a corrosion‐protective coating on steel sheets for form hardening. Rapid heating in an extreme high vacuum (XHV)‐adequate atmosphere is a useful method to prevent oxidation during alloying of 22MnB5 and aluminum to obtain a metallurgical bonding.
Lorenz Albracht   +5 more
wiley   +1 more source

Sufficient conditions for univalence in ℂ n

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2002
The method of subordination chains is used to establish new univalence criteria for holomorphic mappings in the unit ball of ℂ n. Various criteria involving the first and the second derivative of a holomorphic mapping in the unit ball of ℂ n are ...
Dorina Rãducanu
doaj   +1 more source

Unit ball in high dimensions

open access: yes, 2008
In this article, we compute the volume V n of the unit ball in an n-dimensional space. For n = 1, 2, 3, the volumes are respectively 2, π 4π /3, which are the length of interval [-1,1], area of a unit circle and volume of the unit sphere.
Athreya, K. B.
core   +1 more source

Moduli of smoothness and approximation on the unit sphere and the unit ball

open access: yesAdvances in Mathematics, 2010
63 pages, to appear in Advances in ...
Dai, Feng, Xu, Yuan
openaire   +3 more sources

Parameter Variation in Planetary Ball Milling of Titanium Aluminide Powder in XHV‐Adequate Atmosphere

open access: yesAdvanced Engineering Materials, EarlyView.
This study investigates the effects of milling parameters, including rotational speed, milling duration, and ball‐to‐powder ratio, on TiAl particle size and morphology in an XHV‐equivalent atmosphere. The creation of oxide‐free surfaces enhances the mechanical properties of green bodies.
Jytte Möckelmann   +4 more
wiley   +1 more source

Properties of Toeplitz Operators on Some Holomorphic Banach Function Spaces

open access: yesJournal of Function Spaces and Applications, 2012
We characterize complex measures 𝜇 on the unit ball of ℂ𝑛, for which the general Toeplitz operator 𝑇𝛼𝜇 is bounded or compact on the analytic Besov spaces 𝐵𝑝(𝔹𝑛), also on the minimal Möbius invariant Banach spaces 𝐵1(𝔹𝑛) in the unit ball 𝔹𝑛.
Ahmed El-Sayed Ahmed, Mahmoud Ali Bakhit
doaj   +1 more source

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