Transcutaneous O2 and Toe Pressure Changes During Endovascular Revascularisation in Chronic Limb Threatening Ischaemia patients

Abstract:This paper proposes a method for decomposing heart rate fluctuations into background, respiratory and blood pressure oriented fluctuations. A signal cancellation scheme using the adaptive RLS algorithm has been introduced for canceling respiration and blood pressure oriented changes in the heart rate fluctuations. The computer simulation confirmed the validity of the proposed method. Then, heart rate fluctuations, instantaneous lung volume and blood pressure changes are simultaneously recorded from eight normal subjects aged 20-24 years. It was shown that after signal decomposition, the power spectrum of the heart rate showed a consistent monotonic 1/fa type pattern. The proposed method enables a clear interpretation of heart rate spectrum removing uncertain large individual variations due to the respiration and blood pressure change.

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Impact of Reservoir Pressure Changes on 4D Seismic Responses in Carbonates: Special Rock Physics Core Study

10.2523/11418-ms ◽

2007 ◽

Author(s):

William L. Soroka ◽

Taha Al-Dayyani ◽

Christian J. Strohmenger ◽

Hafez H. Hafez ◽

Mahfoud Salah Al-Jenaibi

Keyword(s):

Rock Physics ◽

Reservoir Pressure ◽

Seismic Responses ◽

Core Study ◽

Pressure Changes ◽

4D Seismic

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A comparative cross-sectional study of blood pressure changes in postmenopausal and premenopausal women

MedPulse International Journal of Physiology ◽

10.26611/1031221 ◽

2019 ◽

Vol 12 (2) ◽

pp. 20-23

Author(s):

Padmakar Sasane ◽

◽

Pandurang Narhare ◽

Keyword(s):

Blood Pressure ◽

Premenopausal Women ◽

Cross Sectional Study ◽

Sectional Study ◽

Cross Sectional ◽

Pressure Changes

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Diagnosis of in Situ Air Sparging Performance Using Groundwater Pressure Changes During Startup and Shutdown

10.21236/ada406092 ◽

2001 ◽

Author(s):

Richard L. Johnson ◽

Paul C. Johnson ◽

Tim L. Johnson ◽

Neil Thomas ◽

Andrea Leason

Keyword(s):

Air Sparging ◽

Pressure Changes

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Hydrodynamic Stresses Driving Pore Pressure Changes in Sandy Coastal Sediments

10.21236/ada629408 ◽

1997 ◽

Author(s):

Richard H. Bennett

Keyword(s):

Pore Pressure ◽

Coastal Sediments ◽

Hydrodynamic Stresses ◽

Pressure Changes

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The deuterium interaction with tungsten and iridium in the UHV system

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc19852656 ◽

1985 ◽

Vol 50 (12) ◽

pp. 2656-2664

Author(s):

Karel Kuchynka ◽

Zlatko Knor

Keyword(s):

Partial Pressure ◽

Chemical Reactions ◽

Pressure Range ◽

Tungsten Filament ◽

Different Temperatures ◽

Pressure Changes

The behaviour of hydrogen, in its contact with the iridium and the tungsten filament kept at different temperatures, was studied in the pressure range 1.3 . 10-6 - 1.3 . 10-3 Pa, in a glass apparatus. The effects of adsorption, atomization, desorption, recombination of atoms and chemical reactions were investigated as a function of temperature of the filaments. The named individual processes were used for interpretation of the partial pressure changes in the apparatus. The significance of the above individual phenomena in the UHV experiments is pointed out in this paper.

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Pressure variation in a fluid at rest (hydrostatics)

10.1093/oso/9780198719878.003.0004 ◽

2018 ◽

Author(s):

Marcel Escudier

Keyword(s):

Equation Of State ◽

Static Pressure ◽

Applied Pressure ◽

Pressure Variation ◽

Constant Density ◽

Fluid Temperature ◽

Earth’S Atmosphere ◽

Hydrostatic Equation ◽

Depth Increase ◽

Pressure Changes

The three fundamental principles for the variation of static pressure p throughout a body of fluid at rest are (a) the pressure at a point is the same in all directions (Pascal’s law), (b) the pressure is the same at all points on the same horizontal level, and (c) the pressure increases with depth z according to the hydrostatic equation. dp/dz= ρ‎g For a fluid with constant density ρ‎, the increase in pressure over a depth increase h is ρ‎gh, a result which can be used to analyse the response of simple barometers and manometers to applied pressure changes and differences. In situations where very large changes in pressure occur an equation of state may be required to relate pressure and density together with an assumption about the fluid temperature. The hydrostatic equation is still valid but more difficult to integrate, as illustrated by consideration of the earth’s atmosphere.

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