Results 101 to 110 of about 2,813,006 (349)

Can dynamic contour tonometry and ocular pulse amplitude help to detect severe cardiovascular pathologies?

Clinical Ophthalmology, 2014
T Bertelmann,1 S Langanke,1 M Potstawa,2 I Strempel11Department of Ophthalmology, Philipps-University of Marburg, Marburg, 2Section Cardiology, Internal Medicine Clinic, Schwalmstadt, GermanyAbstract: We demonstrate the close relationship between a ­ ...
Bertelmann T, Langanke S, Potstawa M, Strempel I   +3 more
doaj  

Pulsatility analysis of the circle of Willis

Aging Brain
Purpose: To evaluate the phenomenological significance of cerebral blood pulsatility imaging in aging research. Methods: N = 38 subjects from 20 to 72 years of age (24 females) were imaged with ultrafast MRI with a sampling rate of 100 ms and ...
Henning U. Voss, Qolamreza R. Razlighi
doaj   +1 more source

Comparação entre as variações respiratórias da amplitude de onda pletismográfica da oximetria de pulso e do pulso arterial em pacientes com e sem uso de norepinefrina Comparison between respiratory pulse oximetry plethysmographic waveform amplitude and arterial pulse pressure variations among patients with and without norepinephrine use

Revista Brasileira de Terapia Intensiva, 2009
OBJETIVOS: A variação respiratória da pressão arterial é um bom preditor da resposta a fluidos em pacientes ventilados. Foi recentemente demonstrado que a variação respiratória na pressão arterial de pulso se correlaciona com a variação da amplitude da ...
Guilherme Loures de Araújo Penna, Paula Araujo Rosa, Pedro Martins Pereira Kurtz, Fabricio Braga, Gustavo Ferreira Almeida, Marcia Freitas, Luis Eduardo Drumond, Ronaldo Vegni e Souza, Michel Schatkin Cukier, André Salgado, Clóvis Faria, José Kezen, André Miguel Japiassú, Marcelo Kalichsztein, Gustavo Nobre   +14 more
doaj   +1 more source

Multiscale Cross-Approximate Entropy Analysis as a Measurement of Complexity between ECG R-R Interval and PPG Pulse Amplitude Series among the Normal and Diabetic Subjects

Comput. Math. Methods Medicine, 2013
Physiological signals often show complex fluctuation (CF) under the dual influence of temporal and spatial scales, and CF can be used to assess the health of physiologic systems in the human body.
Hsien-Tsai Wu, Chih-Yuan Lee, Cyuan-Cin Liu, An‐Bang Liu   +3 more
semanticscholar   +1 more source

Synchrotron Radiation for Quantum Technology

Advanced Functional Materials, EarlyView.
Materials and interfaces underpin quantum technologies, with synchrotron and FEL methods key to understanding and optimizing them. Advances span superconducting and semiconducting qubits, 2D materials, and topological systems, where strain, defects, and interfaces govern performance.
Oliver Rader, Sakura Pascarelli, Klaus Attenkofer, Anna A. Makarova, Karsten Holldack, Kai Rossnagel, Kristiaan Temst, George Kourousias, Stefano Carretta, Caterina Biscari, Helmut Dosch   +10 more
wiley   +1 more source

Influence of frequency on the surface discharge characteristics of PEEK under positive repetitive square voltage

High Voltage, 2020
In this study, the surface discharge current pulses of polyetheretherketone (PEEK) material under positive repetitive square voltage in a nitrogen atmosphere are measured.
Zhuodong Yang, Xuebao Li, Xiangrui Meng, Xiangrui Meng, Zhibin Zhao, Pengyu Fu, Bin Zhai, Bin Zhai, Xiang Cui   +8 more
doaj   +1 more source

Amplitude to phase conversion of InGaAs pin photo-diodes for femtosecond lasers microwave signal generation

, 2011
When a photo-diode is illuminated by a pulse train from a femtosecond laser, it generates microwaves components at the harmonics of the repetition rate within its bandwidth.
A. Bartels, A. Joshi, A.D. Ludlow, B. Lorbeer, D. Kuhl, D.R. Leibrandt, E.N. Ivanov, E.N. Ivanov, G. Santarelli, J. Kim, J. Kim, J. Kim, J. Millo, J. Millo, J. Millo, J. Taylor, J.J. McFerran, K. Wu, K.J. Williams, M. Dentan, M. Lours, M.A. Preciato, M.S. Kirchner, R. Holzwarth, S. Min, S. Seidelin, S. Weyers, S.A. Webster, T. Li, T. Steinmetz, T.M. Fortier, T.M. Ramond, W. Zhang, W. Zhang, W. Zhang, Y. Le Coq, Y.Y. Jiang   +36 more
core   +2 more sources

Cu‐Based MOF/TiO2 Composite Nanomaterials for Photocatalytic Hydrogen Generation and the Role of Copper

Advanced Functional Materials, EarlyView.
HKUST‐1/TiO2 composite materials show a very high photocatalytic hydrogen evolution rate which increases as a function of the irradiation time until reaching a plateau and even surpasses the performance of the 1%Pt/TiO2 material after three photocatalytic cycles.
Alisha Khan, Marie Le Pivert, Alireza Ranjbari, Diana Dragoe, Daniel Bahena‐Uribe, Christophe Colbeau‐Justin, Christian Herrero, Dorota Rutkowska‐Zbik, Johnny Deschamps, Hynd Remita   +9 more
wiley   +1 more source

The Dynamics of Prosthetically Elicited Vestibulo-Ocular Reflex Function Across Frequency and Context in the Rhesus Monkey

Frontiers in Neuroscience, 2018
Electrical vestibular neurostimulation may be a viable tool for modulating vestibular afferent input to restore vestibular function following injury or disease.
James O. Phillips, James O. Phillips, James O. Phillips, Leo Ling, Leo Ling, Amy L. Nowack, Amy L. Nowack, Christopher M. Phillips, Christopher M. Phillips, Christopher M. Phillips, Kaibao Nie, Kaibao Nie, Kaibao Nie, Jay T. Rubinstein, Jay T. Rubinstein, Jay T. Rubinstein, Jay T. Rubinstein   +16 more
doaj   +1 more source

pulse amplitude selector

, 2014
Citation: 'pulse amplitude selector' in the IUPAC Compendium of Chemical Terminology, 3rd ed.; International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. 10.1351/goldbook.P04946 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms. Requests for
openaire   +1 more source