Results 41 to 50 of about 6,064,789 (390)

Effect of pulse pressure on borehole stability during shear swirling flow vibration cementing. [PDF]

PLoS ONE, 2017
The shear swirling flow vibration cementing (SSFVC) technique rotates the downhole eccentric cascade by circulating cementing fluid. It makes the casing eccentrically revolve at high speed around the borehole axis.
Zhihua Cui, Chi Ai, Lei Lv, Fangxian Yin
doaj   +1 more source

Extraction and Evaluation of Discriminative Indexes of the Wearing Condition for High-Precision Blood Pressure Pulse Wave Measurement

Micromachines, 2022
In this paper, we report a new discriminant index for evaluating the wearing condition of a blood pressure pulse wave measurement device with small variability.
Yosuke Osawa, Tetsuji Dohi
doaj   +1 more source

Association between preoperative pulse pressure and perioperative myocardial injury: an international observational cohort study of patients undergoing non-cardiac surgery

British Journal of Anaesthesia, 2017
Background The management of elevated blood pressure before non-cardiac surgery remains controversial. Pulse pressure is a stronger predictor of cardiovascular morbidity in the general population than systolic blood pressure alone.
T. Abbott, R. Pearse, R. Archbold, A. Wragg, E. Kam, T. Ahmad, A. Khan, E. Niebrzegowska, R. Rodseth, P. Devereaux, G. Ackland   +10 more
semanticscholar   +1 more source

Picosecond ionization dynamics in femtosecond filaments at high pressures [PDF]

, 2017
We investigate the plasma dynamics inside a femtosecond-pulse-induced filament generated in an argon gas for a wide range of pressures up to 60 bar. At higher pressures, we observe ionization immediately following a pulse, with up to a threefold increase
Gaeta, AL, Gao, X, Kapteyn, HC, Levis, RJ, Murnane, MM, Patwardhan, G, Popmintchev, T, Romanov, DA, Schrauth, S, Zhu, D   +9 more
core   +1 more source

Wearable Multi-Channel Pulse Signal Acquisition System Based on Flexible MEMS Sensor Arrays with TSV Structure

Biomimetics, 2023
Micro-electro-mechanical system (MEMS) pressure sensors play a significant role in pulse wave acquisition. However, existing MEMS pulse pressure sensors bound with a flexible substrate by gold wire are vulnerable to crush fractures, leading to sensor ...
Xiaoxiao Kang, Lin Huang, Yitao Zhang, Shichang Yun, Binbin Jiao, Xin Liu, Jun Zhang, Zhiqiang Li, Haiying Zhang   +8 more
doaj   +1 more source

Relationship between Resting Heart Rate, Blood Pressure and Pulse Pressure in Adolescents

Arquivos Brasileiros de Cardiologia, 2017
Background High resting heart rate is considered an important factor for increasing mortality chance in adults. However, it remains unclear whether the observed associations would remain after adjustment for confounders in adolescents.
D. Christofaro, J. Casonatto, L. Vanderlei, G. Cucato, R. M. R. Dias   +4 more
semanticscholar   +1 more source

Relation between respiratory variations in pulse oximetry plethysmographic waveform amplitude and arterial pulse pressure in ventilated patients. [PDF]

, 2005
IntroductionRespiratory variation in arterial pulse pressure is a reliable predictor of fluid responsiveness in mechanically ventilated patients with circulatory failure.
Besnard, Cyril, Bohé, Julien, Cannesson, Maxime, Durand, Pierre G, Jacques, Didier   +4 more
core   +2 more sources

Development of a Simulator Capable of Generating Age-Specific Pulse Pressure Waveforms for Medical Palpation Training

Applied Sciences, 2022
With the emergence of the metaverse and other human–computer interaction technologies, promising applications such as medical palpation training are growing for training and education purposes.
Dong-Jun Kim, Gwanghyun Jo, Jeong-Hoi Koo, Tae-Heon Yang, Young-Min Kim   +4 more
doaj   +1 more source

Pulse pressure as a predictor of stroke [PDF]

Expert Review of Neurotherapeutics, 2008
The current guidelines for the detection and management of high blood pressure depend exclusively on the measurement of systolic and diastolic blood pressure, although these are only two specific p...
Chamila Geeganage, Gillian M. Sare, Philip M.W. Bath   +2 more
openaire   +3 more sources

Numerical study of the collapse of a bubble subjected to a lithotripter pulse [PDF]

, 2006
The collapse of a bubble subjected to a lithotripter pulse is studied numerically. The goal is to record the pressure exerted along the stone, as a measure of potential stone damage. It is found that the pressure due to buble collapse is much larger than
Colonius, Tim, Johnsen, Eric
core   +1 more source