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Outstanding Characteristics (outstanding + characteristic)

Distribution by Scientific Domains

Polymers and Materials Science	50%

Selected Abstracts

Arrays of Electroplated Multilayered Co/Cu Nanowires with Controlled Magnetic Anisotropy

ADVANCED ENGINEERING MATERIALS, Issue 12 2005
R. Pirota
The controlled production of arrays of nanowires exhibiting outstanding characteristics is recently attracting much interest owing to their applications in a number of emerging technologies related with multifunctional biosensor applications, controlled optomagnetic response, magnetic storage, magnetotransport, or catalytic performance. While nanolitography methodes require sophisticated experimental facilities, an alternative technique that makes use of much simpler conventional anodization and electrodeposition methods in the fabrication of metallic nanowires arrays is increasingly employed. This method allows the preparation of arrays of highly-ordered nanopores induced by anodisation, and its filling with metallic elements by electrodepositon. [source]

A bit of prose about poetry

INTERNATIONAL JOURNAL OF APPLIED PSYCHOANALYTIC STUDIES, Issue 2 2008
Salman Akhtar
Abstract This brief communication delineates 10 outstanding characteristics of poetry. These include poetry's expression of preverbal experience, blending of primary and secondary processes, musical use of words, enhancement of mentalization, reduction of mental pain, cathexis of links and bonds, manifestation of culture, synthesis of neurophysiology, acceptance of the oedipal situation, and its location in the transitional realm. The paper then moves on to deconstruct the form of its message thus far and in the process sheds further light on the "work" of writing poetry. Copyright © 2008 John Wiley & Sons, Ltd. [source]

Synthesis and Structure,Efficiency Relations of 1,3,5-Benzenetrisamides as Nucleating Agents and Clarifiers for Isotactic Poly(propylene),

MACROMOLECULAR CHEMISTRY AND PHYSICS, Issue 2 2010
Frank Abraham
Abstract This paper presents the synthesis and properties of 1,3,5-benzenetrisamides with a particular focus on structure-efficiency relationships of nucleation and optical property enhancement of isotactic poly(propylene) (i -PP). A family of twenty 1,3,5-benzenetrisamide derivatives was synthesized, in which the direction of the amide linkage between the core and the peripheral substituents, as well as their length (C-3 to C-6) and flexibility were systematically varied. Dissolution- and recrystallization temperatures of the additives in the polymer melt, the crystallization temperature of i -PP, and the optical properties clarity and haze were determined in the additive concentration range from 200 to 2,500,ppm. Within the reported series of compounds, few exhibited very good nucleating and clarification abilities, only one with outstanding characteristics, whereas other, very closely related derivatives were found to be incapable to nucleate or clarify i -PP, although, intriguingly, most are structural isomers. We conclude that it is the particular chemical structure of the additive that determines its crystallization/self-assembly process, and, therewith, the structure of the heterogeneous nuclei, and at a higher hierarchical level the morphology of the poly(propylene) solid state and its final properties; and, hence, that a predictive understanding is still elusive. [source]

Mehraxiales mechanisches Ermüdungsmodell von Ultra-Hochfestem Beton: Experimentelle und analytische Untersuchungen

BETON- UND STAHLBETONBAU, Issue 6 2007
Jürgen Grünberg Prof. Dr.-Ing.
Die besonderen Eigenschaften von ultra-hochfestem Beton (UHPC) gegenüber normalfestem Beton erfordern für numerische Analysen die Entwicklung eines mehraxialen mechanischen Modells. Im Dreiphasenmodell werden sowohl sprödes als auch duktiles Baustoffverhalten durch charakteristische Verläufe der Hauptmeridiane, insbesondere des Druckmeridians der Bruchumhüllenden beschrieben. Die anisotrope Ermüdungsschädigung wird im Hauptspannungsraum durch unterschiedliche Schädigungsraten für den Zug- bzw. Druckmeridian berücksichtigt. In umfangreichen experimentellen Untersuchungen werden zur Kalibrierung des Dreiphasenmodells für UHPC die Modellparameter für die Beschreibung der Hauptmeridianverläufe bestimmt. In dynamischen Untersuchungen werden die Parameter für die anisotrope Schädigung bestimmt. Multiaxial Mechanical Model of Ultra-High-Performance Concrete The special and outstanding characteristics of ultra-high-performance concrete (UHPC) require the development of a multiaxial mechanical model for numerical investigations. With the three phases model it is possible to describe the behaviour of concrete from extremely brittle to more ductile using the characteristic development of the principal meridians, in particular the compressive meridian of the fracture surface. Furthermore, the anisotropic damage due to fatigue is considered in the principal-stressarea by different grades of damage in relation to the tensile and the compressive meridian. In experimental investigations, the necessary parameters are determined to calibrate the three phases model for UHPC by specifying the principal meridians for static loading. In further dynamic investigations the parameters for an anisotropic damage model are determined for fatigue loading. [source]