نتایج جستجو برای: competencyvalue measurements

تعداد نتایج: 367154  

Journal: :Journal of the American Chemical Society 2016
Jochen R Brandt Xuhua Wang Ying Yang Alasdair J Campbell Matthew J Fuchter

Circularly polarized (CP) light is of interest in areas such as quantum optical computing, optical spintronics, biomedicine, and high efficiency displays. Direct emission of CP light from organic light-emitting diodes (OLEDs) has been a focus of research as it has the immediate application of increasing efficiency and simplifying device architecture in OLED based displays. High dissymmetry (gEL...

Journal: :Medical physics 1999
M Vilches J C Zapata D Guirado D Fernández D Burgos

We propose and analyze in detail a method to measure the in-air spatial spread parameter of clinical electron beams. Measurements are performed at the center of the beam and below the adjustable collimators sited in asymmetrical configuration in order to avoid distortions due to the presence of the applicator. The main advantage of our procedure lies in the fact that the dose profiles are fitte...

2001
D. Alesini S. Bertolucci C. Biscari M. Boscolo G. Di Pirro A. Drago A. Gallo A. Ghigo S. Guiducci F. Marcellini G. Mazzitelli C. Milardi M. A. Preger

This paper summarizes the results of experimental observations and measurements of beam-beam interactions in DAΦNE, the Frascati Phi-factory. The achieved results are reported with analysis of present limitations in both single and multibunch operation modes and compared with numerical simulations.

2012
Igor Shulman Bradley Penta Mark A. Moline Steven H. D. Haddock Stephanie Anderson Matthew J. Oliver Peter Sakalaukus

[1] Extensive AUVs surveys showed that during the development of upwelling, bioluminescent dinoflagellates from the northern part of the Monterey Bay, California (called the upwelling shadow area), were able to avoid advection by southward flowing currents along the entrance to the Bay, while non-bioluminescent phytoplankton were advected by currents. It is known that vertical swimming of dinof...

2014
David Filgueiras-Rama Martín Arceluz Sergio Castrejón Alejandro Estrada Jorge Figueroa Marta Ortega-Molina Reina Delgado José L. Merino PALABRAS CLAVE

Catheter-based ablation of isthmus-dependent common atrial flutter results in very high success rates and almost no complications. However, bidirectional conduction block through the isthmus may be challenging in a small percentage of patients regarding the use of high power and high temperature settings during radiofrequency delivery. Anatomical and physiological circumstances may be the reaso...

Journal: :Chemical science 2015
Sheng Lin Wei Gao Zeru Tian Chao Yang Lihua Lu Jean-Louis Mergny Chung-Hang Leung Dik-Lung Ma

A series of luminescent iridium(iii) complexes were synthesised and evaluated for their ability to act as luminescent G-quadruplex-selective probes. The iridium(iii) complex 9 [Ir(pbi)2(5,5-dmbpy)]PF6 (where pbi = 2-phenyl-1H-benzo[d]imidazole; 5,5-dmbpy = 5,5'-dimethyl-2,2'-bipyridine) exhibited high luminescence for G-quadruplex DNA compared to dsDNA and ssDNA, and was employed to construct a...

2004
Yuan Yuan Pei Yu Liviu Librescu Piergiovanni Marzocca

Determination of the nature of the critical flutter boundary (benign/catastrophic) and its control constitute important issues that can be addressed within the nonlinear formulation of lifting surface theory. The main attention of this paper consists in the development of a computational approach enabling one to get a better understanding on time-delayed dynamics as applied to this important ae...

2002
E. G. BROADBENT E. V. HARTLEY

This Paper attempts to give some guidance on the question, of how best to approximate to an aircraft with an asymmetric elevator control for the purpose of flutter calculations. Two examples of asymmetric controls that are.common in practice are (1) the design case of a partitioned elevator each part having its own separate power unit and with one such unit having failed, and (2) the asymmetric...

Journal: :Dalton transactions 2012
Santo Di Bella Ivan Pietro Oliveri Alessia Colombo Claudia Dragonetti Stefania Righetto Dominique Roberto

A luminescent bis(salicylaldiminato)zinc(II) Schiff-base complex, 1, is characterized by a concentration dependent second-order nonlinear optical response, related to the degree of aggregation of the complex in a dichloromethane solution. The formation of the monomeric adduct, by addition of a Lewis base, such as pyridine, to concentrated solutions of 1, leads to a switch-on of the quadratic hy...

2010
Carsten Keßler Krzysztof Janowicz

The Sensor Web provides access to observations and measurements through standardized interfaces defined by the Open Geospatial Consortium’s Sensor Web Enablement (SWE) initiative. While clients compliant to these standards have access to the generated sensor data, it remains partially hidden from other knowledge infrastructures building on higher-level W3C standards. To overcome this problem, i...

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