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24 sie 2022 · SeisWind® 3D is an evolution of Fugro’s UUHR seismic service that consists of eight solid custom specification digital streamers, with proprietary sources and decimetre accuracy in-sea positioning systems.
In a recent study , the heart rate was derived from a smartphone SCG signal, and compared to that extracted from ECG. Results showed that the HR provided by SCG, particularly in the dorso-ventral direction of the supine position, was equivalent to that provided by conventional ECG.
31 sie 2010 · As secretory cells, cardiac myocytes are the source of multiple paracrine signals that can affect the coronary vasculature. Some of these—ET-1, FGF2, urocortin, adenosine, and the enzyme heme oxygenase, to name a few—regulate the vascular tone coordinating myocardial requirements for oxygen and nutrients with the blood flow.
2 sty 2015 · The human heart contains an estimated 2–3 billion CM cells, which constitute about 75 % of the total volume of the myocardium, although only about one third of the total cell number.[6,7] The major function of the CM is to carry out the cardiac contraction-relaxation cycle. Electrically, CM depolarise in response to signals from the ...
21 gru 2023 · Upon the initial ischemic event during myocardial infarction (MI), fibroblasts drive the formation of a robust scar that maintains cardiac integrity and function. However, prolonged ischemia...
Understanding the mechanisms through which extracellular stimuli modify the functions of cells in the heart and vascular wall gives valuable insights into how perturbations of signalling systems can cause pathological situations.
30 maj 2020 · The activity of the heart and vessels is permanently modulated in response to electrical, mechanical and chemical signals to maintain cardiovascular system homeostasis. Some effects are rapidly manifested (e.g. contraction after an electrical stimulus), while others...
