منابع مشابه
Instantaneous venous oxygenation estimation using Photoplethysmograph (PPG) waveform
In this study oesophageal photoplethysmograph data from eight patients under positive pressure ventilation was analysed to test the hypothesis that the modulations created by the ventilation in the AC PPG single could be used to estimate the venous saturation. In order to estimate the instantaneous arterial and venous saturation Smoothed-pseudo WignerVille Distribution (SPWVD) was utilised. The...
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Photoplethysmography is a simple measurement of the variation in blood volume in tissue. It detects the pulse signal of heart beat as well as the low frequency signal of vasoconstriction and vasodilation. The transmission type measurement is limited to only a few specific positions for example the index finger that have a short path length for light. The reflectance type measurement can be conv...
متن کامل1 Photoplethysmography ( PPG ) system
2 Basic implementation ......................................................................................................... 4 2.1 The optoelectronic parts ......................................................................................................... 4 2.2 The electronic circuit .........................................................................................................
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PPG12-Buteth16, PPG-9-Buteth12, PPG-26-Buteth-26, and PPG-28-Buteth-35 are polyoxypropylene, polyoxyethylene ethers of butyl alcohol that function as hair conditioning agents, miscellaneous skin conditioning agents, surfactant/emulsifying agents. In addition, PEG-12-Buteth-16 is used as a solvent in cosmetic formulations. This latter ingredient is used at concentrations up to 31% in hair groomi...
متن کاملLoose-fit polypseudorotaxanes constructed from γ-CDs and PHEMA-PPG-PEG-PPG-PHEMA
A pentablock copolymer was prepared via the atom transfer radical polymerization of 2-hydroxyethyl methacrylate (HEMA) initiated by 2-bromoisobutyryl end-capped PPO-PEO-PPO as a macroinitiator in DMF. Attaching PHEMA blocks altered the self-assembly process of the pentablock copolymer with γ-CDs in aqueous solution. Before attaching the PHEMA, the macroinitiator was preferentially bent to pass ...
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ژورنال
عنوان ژورنال: CIRCUIT: Jurnal Ilmiah Pendidikan Teknik Elektro
سال: 2017
ISSN: 2549-3701,2549-3698
DOI: 10.22373/crc.v1i2.2081