Results 131 to 140 of about 449,272 (181)

Negative impact of reduced exocrine pancreatic function on sarcopenia risk in the asymptomatic general population. [PDF]

Front Nutr
Wiese ML, Paradiso G, Frost F, von Rheinbaben S, Bahls M, Ittermann T, Völzke H, Lerch MM, Weiss FU, Aghdassi AA.   +9 more
europepmc   +1 more source

A study protocol for a randomised controlled trial assessing the effects of daily supplementation with defatted almond protein powder on fitness training adaptations and metabolic health in overweight and obese post-menopausal women. [PDF]

Nutr J
Tran V, Urwin CS, Tieland M, Tan SY, Fyfe JJ, Feros S, Bruce C, Mason S, Snipe R, Allsopp G, Hamilton DL, Huschtscha Z.   +11 more
europepmc   +1 more source

A cross-modal epidermal sensor enables single-channel fusion of biopotential and biomechanical signals

Liu Y, Wu X, Wang J, Zhu C, Zheng L, Song Y, Zhang X, Yao Z, Han Y, Wang Z, Jiang Z, Liu Z.   +11 more
europepmc   +1 more source

Diagnosis of sucker rod pumping based on dynamometer card decomposition and hidden Markov model

Transactions of the Institute of Measurement and Control, 2018
In oil field production, dynamometer card is the key source of information to analyze the down-hole operating conditions of sucker rod pumping. However, under different operating conditions, most of the existing diagnostic technologies are incapable to extract features from dynamometer cards automatically and comprehensively.
Xianwen Gao
exaly   +4 more sources

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Dynamometer-Card Classification Uses Machine Learning

Journal of Petroleum Technology, 2020
This article, written by JPT Technology Editor Chris Carpenter, contains highlights of paper SPE 194949, “Beam-Pump Dynamometer Card Classification Using Machine Learning,” by Sayed Ali Sharaf, Tatweer Petroleum; Patrick Bangert, SPE, Algorithmica Technologies; and Mohamed Fardan, Tatweer Petroleum, et al., prepared for the 2019 SPE Middle East Oil and
Sayed Ali Sharaf, Patrick Bangert, Mohamed Fardan, Khalil Alqassab, Mohamed Abubakr, Mahmood Ahmed   +5 more
openaire   +1 more source

A Simple Method for Data Processing of Surface Dynamometer Card

Applied Mechanics and Materials, 2013
The surface dynamometer card is considered as the primary data for a computer analysis of a sucker rod pumping well. There are many problems in the information retrieved from the surface dynamometer card involving duplicated data and reverse direction data (RDD) ,and discontinuous data of the upstroke or the downstroke , etc.
San Min Wang
exaly   +2 more sources

Diagnosis of Sucker Rod Pump based on generating dynamometer cards

Journal of Process Control, 2019
Abstract The dynamometer cards (DC) are the data shown as closed curves collected from Sucker Rod Pumps, which are essential evidence to monitor the working states in modern oil are engineering. To meet the actual needs of oil fields, recently, the computer-aided diagnosis techniques are becoming useful measurements to help engineers monitoring the ...
Boyuan Zheng, Xianwen Gao
exaly   +2 more sources

A qualitative balance of shape descriptors on dynamometer cards

ETFA2011, 2011
The precision and the fast identification of abnormalities of bottom hole are essential to prevent damage and increase production in the oil industry. This article presents a study about a new automatic approach to the detection and the diagnosis of faults in the Sucker-rod Pumping through dynamometric cards of bottom hole.
Fábio Soares de Lima, Diego Rodrigo Cabral Silva, Luiz Affonso H. G. de Oliveira   +2 more
openaire   +1 more source

Pattern Recognition Applied to Dynamometer Cards

SPE Annual Technical Conference and Exhibition, 1989
Abstract Petroleum engineers have traditionally used downhole dynamometer cards1 to diagnose the operation of sucker rod pumps. Specific problems have characteristic cards. The analysis procedure typically compares the unknown card with a library of known cards.
J. F. Keating, R. E. Laine, J. W. Jennings   +2 more
openaire   +1 more source