Results 51 to 60 of about 3,632,287 (380)
Real-Time Smart-Digital Stethoscope System for Heart Diseases Monitoring
Sensors, 2019 One of the major causes of death all over the world is heart disease or cardiac dysfunction. These diseases could be identified easily with the variations in the sound produced due to the heart activity.
Muhammad E.H. Chowdhury +6 more
doaj +1 more source
Fetal Heart Sounds Detection Using Wavelet Transform and Fractal Dimension. [PDF]
Front Bioeng Biotechnol, 2017 Phonocardiography is a non-invasive technique for the detection of fetal heart sounds (fHSs). In this study, analysis of fetal phonocardiograph (fPCG) signals, in order to achieve fetal heartbeat segmentation, is proposed.
Koutsiana E +3 more
europepmc +2 more sources
Heart energy signature spectrogram for cardiovascular diagnosis
BioMedical Engineering OnLine, 2007 A new method and application is proposed to characterize intensity and pitch of human heart sounds and murmurs. Using recorded heart sounds from the library of one of the authors, a visual map of heart sound energy was established.
Roy Douglas L +2 more
doaj +1 more source
, 2022 This thesis investigated the relationship between heart sounds and diseased conditions through animal and human studies. The researchers proposed a novel algorithm to estimate the second heart sound splitting which was proven to be related to uncoordinated heart contraction.
openaire +1 more source
Isolated Fourth Heart Sound [PDF]
Circulation: Heart Failure, 2017 A 77-year-old man with a history of coronary artery bypass grafting presented with general fatigue and dyspnea on effort. He was classified as having New York Heart Association functional classification III heart failure symptoms. His brain natriuretic peptide level was elevated at 569 pg/mL.
Shun, Yokota +8 more
openaire +2 more sources
Advanced Engineering Materials, EarlyView.This article presents the NFDI‐MatWerk Ontology (MWO), a Basic Formal Ontology‐based framework for interoperable research data management in materials science and engineering (MSE). Covering consortium structures, research data management resources, services, and instruments, MWO enables semantic integration, Findable, Accessible, Interoperable, and ...
Hossein Beygi Nasrabadi +4 more
wiley +1 more source
Advanced Functional Materials, EarlyView.Metal‐tetracene dimeric complexes are synthesized through the pyridyl coordination to either Pt(II) or Pd(II). Photophysical properties are systematically compared as a function of the metal using steady‐state and time‐resolved spectroscopy. The Pt(II) dimer exhibits efficient intramolecular singlet fission and subsequent intramolecular up‐conversion ...
Yifan Bo +4 more
wiley +1 more source
A framework for automatic heart sound analysis without segmentation
BioMedical Engineering OnLine, 2011 Background A new framework for heart sound analysis is proposed. One of the most difficult processes in heart sound analysis is segmentation, due to interference form murmurs.
Tungpimolrut Kanokvate +3 more
doaj +1 more source
Computerized heart sounds analysis [PDF]
Computers in Biology and Medicine, 2008 This paper is concerned with a synthesis study of the fast Fourier transform (FFT), the short-time Fourier transform (STFT), the Wigner distribution (WD) and the wavelet transform (WT) in analysing the phonocardiogram signal (PCG). It is shown that these transforms provide enough features of the PCG signals that will help clinics to obtain qualitative ...
S M, Debbal, F, Bereksi-Reguig
openaire +2 more sources
Quantum Emitters in Hexagonal Boron Nitride: Principles, Engineering and Applications
Advanced Functional Materials, EarlyView.Quantum emitters in hexagonal boron nitride have emerged as a promising candidate for quantum information science. This review examines the fundamentals of these quantum emitters, including their level structures, defect engineering, and their possible chemical structures.
Thi Ngoc Anh Mai +8 more
wiley +1 more source