Results 81 to 90 of about 255,812 (300)
Novel physical network algorithm for indirect measurement of polished rod load of beam-pumping unit
The Journal of Engineering, 2019 A novel neural network algorithm for indirect measurement of the polished rod load of the beam-pumping unit is proposed. The dynamometer card is a two-dimension graph of polished rod load versus horse head position, and it is widely used for working ...
Ke Wang +6 more
doaj +1 more source
A Fourier Approximation Method for the Multi-Pump Multi-Piston Power Take-Off System [PDF]
, 2018 In this work, a frequency-domain method for the numerical solution of the nonlinear dynamics of a wave energy converter with a pumping system is presented. To this end, a finite Fourier series is used to describe the nonlinear force components, i.e., the
Barradas Berglind, Jose de Jesus +6 more
core
Tailoring the Properties of Functional Materials With N‐Oxides
Advanced Functional Materials, EarlyView.The properties of materials bearing N‐oxide groups are often dominated by the polar N+─O− bond. It provides hydrophilicity, selective ion‐binding, electric conductivity, or antifouling properties. Many of the underlying mechanisms have only recently been discovered, and the interest in N‐oxide materials is rapidly growing.
Timo Friedrich +5 more
wiley +1 more source
Vacuum Technology for Ion Sources
, 2014 The basic notions of vacuum technology for ion sources are presented, with emphasis on pressure profile calculation and choice of pumping technique. A Monte Carlo code (Molflow+) for the evaluation of conductances and the vacuum-electrical analogy for ...
Chiggiato, P.
core +1 more source
DIAGNOSTIC RESULTS OF PUMPING UNITS
Irrigatsiya va Melioratsiya, 2018 One of the main requirements for reliable operation of pumping units is continuous monitoring, analysis of technical condition and timely troubleshooting. Development of modern and perfect ways to determine the technical status of pumping units to prevent the occurrence of malfunctions. This article presents the results of experimental research carried
O Glovatsky, R Ergashev, F Bekchanov
openaire +1 more source
Advanced Functional Materials, EarlyView.This research presents a novel implantable bio‐battery, GF‐OsG, tailored for diabetic bone repair. GF‐OsG generates microcurrents in high‐glucose conditions to enhance vascularization, shift macrophages to the M2 phenotype, and regulate immune responses.
Nanning Lv +10 more
wiley +1 more source
Jixie chuandong, 2010 The mathematical model of non-circular gear crank-rocker mechanism is established,and the dynamic characters of this organization are analyzed.Taking the energy saving as a starting point,the design method applicable to the beam pumping unit of non ...
赵娟娟, 苏智剑
doaj
Kinematic and Dynamic Analysis of Eccentric Balanced Positive Torque Pumping Unit
MachinesBeam pumping units have numerous energy transfer links, significant net torque fluctuations and negative net torque in gear boxes, which lead to a high installed power and low system efficiency.
Jinchao Xu +4 more
doaj +1 more source
, 2005 We utilize a time-periodic ratchet-like potential modulation imposed onto a two-dimensional electron system inside a GaAs/Al$_x$Ga$_{1-x}$As heterostructure to evoke a net dc pumping current. The modulation is induced by two sets of interdigitated gates,
A. D. Wieck +5 more
core +1 more source
Advanced Functional Materials, EarlyView.In this research, it is demonstrated that dual nitrogen and sulfur doping in hollow carbon spheres creates a tunable coordination environment that stabilizes cationic Pd single atoms as robust organometallic complexes, enabling high selectivity and stability for electrochemical hydrogen peroxide production under harsh acidic and peroxide‐rich ...
Guilherme V. Fortunato +16 more
wiley +1 more source