Results 51 to 60 of about 601,437 (304)

Super-reflection of light from a random amplifying medium with disorder in the complex refractive index : Statistics of fluctuations

, 1999
The probability distribution of the reflection coefficient for light reflected from a one-dimensional random amplifying medium with {\it cross-correlated} spatial disorder in the real and the imaginary parts of the refractive index is derived using the ...
A. K. Sen, A. Rubio, B. Doucot, B. Raghavendra Prasad, D. S. Wiersma, D. S. Wiersma, D. S. Wiersma, E. Krishna Das, E. Novikov, G. V. Vijayagovindan, H. Cao, J. C. J. Paaschens, M. Siddique, M. Siddique, N. G. van Kampen, N. Kumar, N. Kumar, N. M. Lawandy, P. Sheng, Prabhakar Pradhan, R. Rammal, S. Anantha Ramakrishna, S. John, S. Tanosaki, S. V. Frolov, V. E. Shapiro, Xunya Jiang, Z. Q. Zhang   +27 more
core   +1 more source

Predictive Ability of Plasma p‐tau217 for β‐Amyloid Status: A Prospective Multicenter Study

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Plasma tau phosphorylated at threonine 217 (p‐tau217) measured with fully automated platforms has shown high accuracy for Alzheimer's disease (AD) diagnosis, but real‐world multicenter data remain limited. We aimed to validate the diagnostic performance of p‐tau217 for identifying AD pathology in a real‐world multicenter cohort ...
Miquel Massons, Nuria Guillen, Jordi Sarto, Neus Falgàs, Sergi Borrego‐Écija, Diana Esteller‐Gauxax, Magda Castellví, Adrià Tort‐Merino, Agnès Pérez‐Millan, Anna Antonell, Josep M. Augè Fradera, Gerard Piñol, Iolanda Riba, Anna Carnes‐Vendrell, Marta Cullell, Maria Teresa Osuna, Lorena Bajo, Teresa Romero, Eva Bonjoch, Joan Bello, Susana Fernández, Marta Balagué, Isabel Gómez‐Ruiz, Anuncia Boltes, Claustre Pont, Raquel Cuevas, Sara Carrillo, Laura Iglesias, Teresa Maria Casadevall Codina, Lorena Grau Guinea, Fernando Jose Espada, Raquel Sánchez‐Valle, Mircea Balasa, Albert Lladó   +33 more
wiley   +1 more source

Quantitative Assessment of Wave Reflection from Oscillating Water Column Devices and Empirical Prediction of Reflection Coefficients

Journal of Marine Science and Engineering
This study experimentally investigated the wave reflection characteristics of a vertical-type OWC installed by partially removing a section of an existing rubble mound breakwater under irregular wave conditions.
Su-Young Lee, Kwang-Ho Lee
doaj   +1 more source

Delamination thickness measurement based on Stoneley wave in bilayered composite structure

Acta Acustica, 2023
Introduction: For composite structures, delamination usually occurs at the interface. Ultrasonic guided waves have been widely used to detect the delamination.
Zhou Tao, Li Ming-hang, Li Bing
doaj   +1 more source

Experimental Procedure for the Determination of the Number of Paramagnetic Centers [PDF]

, 1961
The determination of the number of paramagnetic centers in a given crystal is usually performed by comparing the resonance signal of the unknown centers with that of a calibrated standard. The two most often used standards are CuSO4·5H2O and DPPH. In the
Gordon, J. P., Yariv, A.
core   +1 more source

Retractions in Rheumatology: Trends, Causes, and Implications for Research Integrity

Arthritis Care &Research, EarlyView.
Objective We aimed to describe the trends and main reasons for study retraction in rheumatology literature. Methods We reviewed the Retraction Watch database to identify retracted articles in rheumatology. We recorded the main study characteristics, authors’ countries, reasons for retraction, time from publication to retraction, and trends over time ...
Anna Maria Vettori, Michele Iudici
wiley   +1 more source

Investigation of electromagnetic radiation transmission and reflection coefficients of powder materials based on electrocorund

Доклады Белорусского государственного университета информатики и радиоэлектроники, 2019
The investigation results of the shielding properties of powder materials based on electrocorund in frequency range 0.7…17 GHz are presented.
D. I. Penaloza Ovalles
doaj  

Gravity waves as a mechanism of troposphere–stratosphere–mesosphere coupling during sudden stratospheric warming [PDF]

Atmospheric Chemistry and Physics
The propagation of gravity waves (GWs) and their role in the coupling of the troposphere–stratosphere–mesosphere atmospheric layers during sudden stratospheric warming (SSW) are studied. A standard set of hydrodynamic (HD) equations is used to derive the
G. Jovanovic
doaj   +1 more source

Revisiting Stability Criteria in Ball‐Milled High‐Entropy Alloys: Do Hume–Rothery and Thermodynamic Rules Equally Apply?

Advanced Engineering Materials, Volume 27, Issue 6, March 2025.
The stability criteria affecting the formation of high‐entropy alloys, particularly focusing in supersaturated solid solutions produced by mechanical alloying, are analyzed. Criteria based on Hume–Rothery rules are distinguished from those derived from thermodynamic relations. The formers are generally applicable to mechanically alloyed samples.
Javier S. Blázquez, Alejandro F. Manchón‐Gordón, Antonio Vidal‐Crespo, Rafael Caballero‐Flores, Jhon J. Ipus, Clara F. Conde   +5 more
wiley   +1 more source

Numerical and Experimental Study on the Wave-Attenuation Effect According to the Height of a Two-Row Submerged Rectangular Structure

한국해양공학회지
Coastal erosion, exacerbated by climate change and coastal development, presents increasing challenges for shoreline protection. This study investigates the effectiveness of submerged structures, specifically underwater breakwaters, in mitigating wave ...
Seonghee Yu, Sanghun Lee, Sanghwan Heo, Weoncheol Koo   +3 more
doaj   +1 more source