Results 41 to 50 of about 531,139 (281)

Dispersive Methods

, 2014
This chapter discusses dispersive means of obtaining spectral resolution in spectrophotometry. These methods are used to spatially disperse or separate the various wavelengths of optical electromagnetic radiation to enable analysis of material properties in wavelength bandwidths that are appropriate to the material, the material property, and the ...
Gaertner, Arnold A., Yoon, Howard W., Germer, Thomas A.   +2 more
openaire   +3 more sources

Time decay estimates for the wave equation with potential in dimension two [PDF]

, 2014
We study the wave equation with potential $u_{tt}-\Delta u+Vu=0$ in two spatial dimensions, with $V$ a real-valued, decaying potential. With $H=-\Delta+V$, we study a variety of mapping estimates of the solution operators, $\cos(t\sqrt{H})$ and $\frac ...
Green, William R.
core   +1 more source

Atmospheric dispersion and the implications for phase calibration [PDF]

, 2009
The success of any ALMA phase-calibration strategy, which incorporates phase transfer, depends on a good understanding of how the atmospheric path delay changes with frequency (e.g. Holdaway & Pardo 2001).
Curtis, Emily I., Nikolic, Bojan, Pardo, Juan R., Richer, John S.   +3 more
core  

Coulomb Blockade with Dispersive Interfaces

, 2002
What quantity controls the Coulomb blockade oscillations if the dot--lead conductance is essentially frequency--dependent ? We argue that it is the ac dissipative conductance at the frequency given by the effective charging energy. The latter may be very
A. I. Larkin, A. Kamenev, D. V. Averin, G. Goeppert, G. Mahan, K. A. Matveev, K. A. Matveev, L. I. Glazman, L. I. Glazman, L. I. Glazman, S. Iida, S. E. Korshunov, S. E. Korshunov   +12 more
core   +1 more source

The HIT Network for Children and Adolescents With CNS Tumors Facilitates Improvements of Diagnostic Assessments, Multimodal Treatments, Individual Counseling, and Research in Germany, Austria, and Switzerland

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background The HIT network was established in 2000 to create a population‐based structure aiming to improve survival rates and reduce late effects for children with central nervous system (CNS) tumors by conducting comprehensive clinical trials.
Stefan Rutkowski, Michael C. Frühwald, Gudrun Fleischhack, Stephan Tippelt, Pablo Hernáiz‐Driever, Olaf Witt, Astrid Gnekow, Christof Kramm, Matthias Eyrich, Johannes E. A. Wolf, Hermann Müller, Carsten Friedrich, Uwe R. Kordes, Denise Obrecht‐Sturm, Petra Ketteler, Barbara von Zezschwitz, Pascal Johann, Dominik Sturm, Karoline Nemes, Stefan Schönberger, Till Milde, Brigitte Bison, Monika Warmuth‐Metz, Torsten Pietsch, Ulrich Schüller, Arend Koch, David Capper, Martin Hasselblatt, Christian Thomas, Christian Hagel, Stefan M. Pfister, Felix Sahm, David T. W. Jones, Martin U. Schuhmann, Jürgen Krauss, Pedram Emami, Ahmed El Damaty, Rolf D. Kortmann, Rudolf Schwarz, Jürgen Debus, Mechthild Krause, Fabian Pohl, Holger Ottensmeier, Lisa Bußenius, Katja Baust, Andreas Faldum, Cecile Ronckers, Desiree Grabow, Martin Benesch, Thomas Perwein, Karin Dieckmann, Irene Slavc, Johannes Gojo, Nicolas U. Gerber, André O. von Bueren, Katrin Scheinemann, Gabriele Calaminus, Beate Timmermann, Ulrich‐Wilhelm Thomale, Martin Mynarek   +59 more
wiley   +1 more source

Spectral Theory of Time Dispersive and Dissipative Systems

, 2004
We study linear time dispersive and dissipative systems. Very often such systems are not conservative and the standard spectral theory can not be applied.
A. Figotin, A. Tip, F. Gesztesy, H. Lamb, J. H. Schenker, MA. Naimark   +5 more
core   +3 more sources

Utility of Computed Tomography Surveillance of Asymptomatic Infection in Children and Young Adults Before Allogeneic Hematopoietic Stem Cell Transplant

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Asymptomatic infection poses a significant risk for children undergoing hematopoietic stem cell transplantation (HSCT). Pre‐transplant surveillance computed tomography (CT) is commonly used to identify occult infection, though its diagnostic yield remains uncertain.
Tyler Obermark, Pradipta Debnath, Rama S. Ayyala, Lara A. Danziger‐Isakov, Jane Koo, Kasiani C. Myers, William R. Otto, Aki Tanimoto, Andrew T. Trout, Cara E. Morin   +9 more
wiley   +1 more source

Sol – Gel Modelling Associated with the Rheology of Polymeric Precursors of Ceramic Materials

Applied Rheology, 2003
A general constitutive relation describing the change of viscoelastic behavior during the liquid - solid (sol - gel) transition which takes place in preceramic polymers is derived on the basis of Jeffrey’s 3-constants model with time dependent ...
Balan Corneliu, Riedel Ralf
doaj   +1 more source

Pseudo-Hermiticity and Electromagnetic Wave Propagation in Dispersive Media

, 2010
Pseudo-Hermitian operators appear in the solution of Maxwell's equations for stationary non-dispersive media with arbitrary (space-dependent) permittivity and permeability tensors.
Agranovich, Ali Mostafazadeh, Mostafazadeh, Mostafazadeh, Mostafazadeh, Mostafazadeh, Mostafazadeh, Mostafazadeh, Scholtz   +8 more
core   +1 more source

Dispersive approach in Sudakov resummation [PDF]

, 2006
The dispersive approach to power corrections is given a precise implementation, valid beyond single gluon exchange, in the framework of Sudakov resummation for deep inelastic scattering and the Drell-Yan process.
Grunberg, Georges
core   +2 more sources