Results 121 to 130 of about 227,128 (319)
Argon Cold Plasma Modification of Polyethylene Films to Tailor Surface and Barrier Properties
Journal of Applied Polymer Science, EarlyView.Argon cold plasma treatment of low‐density polyethylene (LDPE) and high‐density polyethylene (HDPE) films induces major changes in surface chemistry and morphology. Contact angles decrease significantly while surface energy increases, improving wettability. FTIR confirms the formation of polar functional groups, while pronounced etching, roughness, and
Aikaterini Spanou +11 more
wiley +1 more source
Optimal Inequalities among Various Means of Two Arguments
Abstract and Applied Analysis, 2009 We establish two optimal inequalities among power mean Mp(a,b)=(ap/2+bp/2)1/p, arithmetic mean A(a,b)=(a+b)/2, logarithmic mean L(a,b)=(a−b)/(loga−logb), and geometric mean G(a,b)=ab.
Ming-yu Shi, Yu-ming Chu, Yue-ping Jiang
doaj +1 more source
On the Arithmetic-Geometric mean inequality
Tamkang Journal of Mathematics, 2013 We obtain some refinements of the Arithmetic--Geometric mean inequality. As an application, we find the maximum value of a multi-variable function.
openaire +2 more sources
The Anatomical Record, EarlyView.Abstract Dental microwear texture analysis (DMTA) has emerged as a valuable method for investigating the feeding ecology of vertebrates. Over the past decade, three‐dimensional topographic data from microscopic regions of tooth surfaces have been collected, and surface texture parameters have been published for both extant and fossil species.
Mugino O. Kubo +4 more
wiley +1 more source
The relationship between form and function of the carnivore mandible
The Anatomical Record, EarlyView.Abstract Dietary morphology diversified extensively in Carnivoraformes (living Carnivora and their stem relatives) during the Cenozoic (the last 66 million years) as they evolved to capture, handle, and process new animal and plant diets. We used 3D geometric morphometrics, mechanical advantage, and finite element analysis to test the evolutionary ...
Charles J. Salcido, P. David Polly
wiley +1 more source
Arithmetic and geometric mean rates of return in discrete time [PDF]
This memorandum presents some basic equalities and inequalities about rates of return in discrete time, without auto-correlation. The arithmetic and geometric means are discussed.
Arie ten Cate
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The Anatomical Record, EarlyView.Abstract Walruses have been an important subsistence and cultural resource for humans and have been exploited for millennia across their distribution. This exploitation has contributed to severe declines in several populations and local extirpations.
Katrien Dierickx +6 more
wiley +1 more source
Arithmetic–Geometric Mean and Related Inequalities for Operators
Journal of Functional Analysis, 1998 The author discusses the matrix inequalities \(||| A^*XB||| \leq {1\over 2} |||AA^*X+ XBB^*|||\) and \(||| AXB|||\leq |||A^pX|||^{1/p} |||XB^q|||^{1/q}\) (with \(A,B\geq 1\), \(1 ...
openaire +1 more source
From armadillos to sloths: Patterns and variations in xenarthran coronary anatomy
The Anatomical Record, EarlyView.Abstract Species of the superorder Xenarthra play a vital ecological role in the Neotropics. Despite their evolutionary significance, anatomical studies on their coronary circulation remain scarce. This study investigated the coronary anatomy of 82 hearts from nine Xenarthra species across the Dasypodidae, Myrmecophagidae, and Bradypodidae.
Wilson Viotto‐Souza +5 more
wiley +1 more source
Using a Constant Elasticity of Substitution Index to Estimate a Cost of Living Index: From Theory to Practice [PDF]
Indexes often incorporate various biases due to their methods of construction. The Constant Elasticity of Substitution (CES) index can potentially eliminate substitution bias without needing current period expenditure data.
Erwin Diewert +2 more
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