Results 111 to 120 of about 9,155,379 (405)

Optical spectra in condensed phases: how the medium polarizability affects charge-transfer dyes [PDF]

arXiv, 2020
When designing molecular functional materials, the properties of the active specie, the dye, must be optimized fully accounting for environmental effects. Here we present an effective model to account for the spectroscopic effects of the medium electronic polarizability on the properties of charge-transfer dyes.
arxiv  

Comparison of neutral oral contrast versus positive oral contrast medium in abdominal multidetector CT [PDF]

, 2018
To determine whether neutral contrast agents with water-equivalent intraluminal attenuation can improve delineation of the bowel wall and increase overall image quality for a non-selected patient population, a neutral oral contrast agent (3% mannitol ...
Berther, Ralph, Eckhardt, Boris, Erturk, Sukru, Patak, Michael, Zollikofer, Christoph   +4 more
core  

Self-Consistent Effective-Medium Approximations with Path Integrals

, 2000
We study effective-medium approximations for linear composite media by means of a path integral formalism with replicas. We show how to recover the Bruggeman and Hori-Yonezawa effective-medium formulas. Using a replica-coupling ansatz, these formulas are
Barthelemy, Marc, Pellegrini, Yves-Patrick   +1 more
core   +2 more sources

In vivo evidence for glycyl radical insertion into a catalytically inactive variant of pyruvate formate‐lyase

FEBS Letters, EarlyView.
Dimeric pyruvate formate‐lyase cleaves pyruvate using a radical‐based mechanism. G734 serves as a radical storage location, and the radical is transferred to the catalytic C419 residue. Mutation of the C418‐C419 pair causes loss of enzyme activity, but does not impede radical introduction onto G734. Therefore, cis‐ but not trans‐radical transfer occurs
Michelle Kammel, A. F. Volker Wagner, R. Gary Sawers   +2 more
wiley   +1 more source

An analysis of the NLMC upscaling method for high contrast problems [PDF]

arXiv, 2019
In this paper we propose simple multiscale basis functions with constraint energy minimization to solve elliptic problems with high contrast medium. Our methodology is based on the recently developed non-local multicontinuum method (NLMC). The main ingredient of the method is the construction of suitable local basis functions with the capability of ...
arxiv  

P‐glycoprotein modulates the fluidity gradient of the plasma membrane of multidrug resistant CHO cells

FEBS Letters, EarlyView.
To explore the impact of the overexpression of the multidrug‐transporter P‐glycoprotein (ABCB1) on membrane fluidity, we compared the transversal gradient of mobility and microviscosity in plasma membranes of drug‐sensitive Chinese hamster ovary cells (AuxB1) and their multidrug‐resistant derivatives (B30) using the fluorescent n‐(9‐anthroyloxy) fatty ...
Roger Busche, John R. Riordan, Burkhard Tümmler   +2 more
wiley   +1 more source

PROFILAXIS DE LA NEFROPATÍA INDUCIDA POR CONTRASTE EN PACIENTES DE ALTO RIESGO CON SÍNDROME CORONARIO AGUDO SIN ELEVACIÓN DEL SEGMENTO ST / Prophylaxis of contrast-induced nephropathy in high risk patients with non-ST-segment elevation acute coronary syndrome [PDF]

CorSalud, 2012
ResumenIntroducción y objetivos: La eficacia de la administración conjunta de suero salino isotónico y N-acetilcisteína presenta resultados dispares en la prevención de la nefropatía por contraste yodado.
Pilar Portero Pérez, Tatiana Matajira Chia, Ramón Bascompte Claret, Pilar Artero Bello, Antonela Lukic, Jose A. Linares Vicente, Pablo Revilla Martí, Jose R. Ruiz Arroyo   +7 more
doaj  

Evaluation of QCD sum rules for light vector mesons at finite density and temperature

, 2002
QCD sum rules are evaluated at finite nucleon densities and temperatures to determine the change of mass parameters for the lightest vector mesons $\rho$, $\omega$ and $\phi$ in a strongly interacting medium.
Kampfer, B., Pavlenko, O. P., Zschocke, S.   +2 more
core   +1 more source

A comparative study of circulating tumor cell isolation and enumeration technologies in lung cancer

Molecular Oncology, EarlyView.
Lung cancer cells were spiked into donor blood to evaluate the recovery rates of the following circulating tumor cell (CTC) enrichment technologies: CellMag™, EasySep™, RosetteSep™, Parsortix® PR1, and Parsortix® Prototype systems. Each method's advantages and disadvantages are described.
Volga M Saini, Ezgi Oner, Mark P. Ward, Sinead Hurley, Brian David Henderson, Faye Lewis, Stephen P. Finn, Gerard J. Fitzmaurice, John J. O'Leary, Sharon O'Toole, Lorraine O'Driscoll, Kathy Gately   +11 more
wiley   +1 more source

Post-contrast acute kidney injury. Part 2: risk stratification, role of hydration and other prophylactic measures, patients taking metformin and chronic dialysis patients

European Radiology, 2018
ObjectivesThe Contrast Media Safety Committee (CMSC) of the European Society of Urogenital Radiology (ESUR) has updated its 2011 guidelines on the prevention of post-contrast acute kidney injury (PC-AKI).
A. J. van der Molen, P. Reimer, I. Dekkers, G. Bongartz, M. Bellin, M. Bertolotto, O. Clément, G. Heinz-Peer, F. Stacul, J. Webb, H. Thomsen   +10 more
semanticscholar   +1 more source