Results 51 to 60 of about 624,198 (294)

Research and design of pulse wave sphygmomanometer based on RNN

Dianzi Jishu Yingyong, 2018
Aiming at the inconvenience and discontinuity of traditional cuff sphygmomanometer, a portable pulse wave sphygmomanometer is designed. The sphygmomanometer collects the pulse wave signal of the finger end through the photoelectric sensor，preprocesses ...
Liu Yanping, Li Jie, Jin Fei
doaj   +1 more source

Numerical Modeling of Pulse Wave Propagation in a Stenosed Artery using Two-Way Coupled Fluid Structure Interaction (FSI)

, 2018
As the heart beats, it creates fluctuation in blood pressure leading to a pulse wave that propagates by displacing the arterial wall. These waves travel through the arterial tree and carry information about the medium that they propagate through as well ...
Gamage, Peshala P. T, Khalili, Fardin, Mansy, Hansen A   +2 more
core   +1 more source

Aquaporin‐4 in Narcolepsy Type 1: Investigation of Perivascular Fluid Movement in Sleep Disorders

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Narcolepsy type 1 (NT1) is caused by the loss of hypocretin‐1 leading to excessive daytime sleepiness and cataplexy. Additionally, disrupted nighttime sleep has become an increasingly recognized feature of NT1. As the glymphatic fluid movement has been linked to sleep architecture, we investigated cerebrospinal fluid (CSF) Aquaporin‐4 (AQP4 ...
Jonas Ranke, Petra Steinacker, Steffen Halbgebauer, Patrick Oeckl, Geert Mayer, Markus Otto   +5 more
wiley   +1 more source

Near-field diffraction of fs and sub-fs pulses: super-resolutions of NSOM in space and time [PDF]

, 2003
The near-field diffraction of fs and sub-fs light pulses by nm-size slit-type apertures and its implication for near-field scanning optical microscopy (NSOM) is analyzed.
Ambrose, Bethe, Betzig, Betzig, Bromage, Drezet, Girard, Harrington, Hentschel, K. Janssens, Kaplan, Kukhlevsky, Kukhlevsky, Kukhlevsky, L. Csapo, Lewis, M. Mechler, Massey, McDonald, Mitrofanov, Mitrofanov, Nahata, Neerhoff, Novotny, Paul, S.V. Kukhlevsky, Weaver, Xie   +27 more
core   +1 more source

Neurovascular Contacts in the Pathophysiology of Neuralgic Amyotrophy: An Observational Study

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Neuralgic amyotrophy (NA) is a prevalent, monophasic, multifocal immune‐mediated neuropathy. A distinctive characteristic of the disease is the occurrence of nerve or fascicle constrictions and torsions (NA‐associated focal nerve lesions, NAFL). The pathophysiology underlying this phenomenon remains to be fully elucidated.
Johannes Fabian Holle, Andreas Leha, Volker Limmroth, Wolfram Windisch, Maximilian Zimmermann   +4 more
wiley   +1 more source

A learning-based image processing approach for pulse wave velocity estimation using spectrogram from peripheral pulse wave signals: An in silico study

Frontiers in Physiology, 2023
Carotid-to-femoral pulse wave velocity (cf-PWV) is considered a critical index to evaluate arterial stiffness. For this reason, estimating Carotid-to-femoral pulse wave velocity (cf-PWV) is essential for diagnosing and analyzing different cardiovascular ...
Juan M. Vargas, Mohamed A. Bahloul, Taous-Meriem Laleg-Kirati, Taous-Meriem Laleg-Kirati   +3 more
doaj   +1 more source

Propagation Failure in Excitable Media

, 1997
We study a mechanism of pulse propagation failure in excitable media where stable traveling pulse solutions appear via a subcritical pitchfork bifurcation. The bifurcation plays a key role in that mechanism.
A. F. M. Maree, A. Hagberg, A. Hagberg, A. Hagberg, A. Hagberg, A. Hagberg, A. Karma, A. V. Holden, C. B. Muratov, C. Elphick, D. A. Kessler, E. M. Kuznetsova, E. Meron, E. Meron, H. Sevcikova, J. D. Dockery, J. J. Taboada, J. J. Tyson, M. Bär, M. Bär, M. Courtemanche, M. Markus, P. Coullet, P. Schütz, R. E. Goldstein, S. P. Dawson, T. Ohta   +26 more
core   +1 more source

Thermoreflectance Detection of Point Defects Resulting from Focused Ion Beam Milling

Advanced Engineering Materials, EarlyView.
Focused ion beam (FIB) milling is a common tool for nanoscale material processing, however irradiation damage, redeposition, and contamination can occur. We use several characterization tools to show FIB‐induced effects beyond 1 mm from the milled area.
Thomas W. Pfeifer, Eric R. Hoglund, Anton V. Ievlev, Patrick E. Hopkins   +3 more
wiley   +1 more source

A Study on the Influence of Pulse Wave Shape and Pulse Rate Variation on the Menstrual Cycle and Dysmenorrhea [PDF]

BIO Web of Conferences
Background: Pulse wave, as a carrier of human hemodynamic parameters, can reflect the hemodynamic state of the menstrual cycle. Objective: To explore the influence of pulse wave shape and pulse rate variation on menstrual cycle and dysmenorrhea. Methods:
Lian Cuiting, Yang Lin, Li Ziwei, Zhao Hongyang, Li Yashuang, Hao Dongmei, Li Guangfei, Yang Yimin, Li Xuwen   +8 more
doaj   +1 more source

Nanoscale spin-wave wake-up receiver

, 2019
We present the concept of a passive spin-wave device which is able to distinguish different radio-frequency pulse trains and validate its functionality using micromagnetic simulations.
Brächer, Thomas, Chumak, Andrii V., Hillebrands, Burkard, Mohseni, Morteza, Pirro, Philipp, Vasyuchka, Vitaliy I., Wang, Qi   +6 more
core   +1 more source