Results 61 to 70 of about 32,518 (302)

RELIABILITY STUDY OF PISTON PUMPS IN MOBILE PUMPING UNITS

ETM Equipment Technologies Materials
The article presents the results of a reliability study of piston pumps in mobile pumping units used in technological operations in the oil and gas industry. The relevance of the work is due to the operation of piston pumps under conditions of variable loads, vibration impact, temperature fluctuations, and varying intensities of factors affecting the ...
Ali Hikmat Ahmadov Ali Hikmat Ahmadov, Shahin Hasanov Shahin Hasanov   +1 more
openaire   +1 more source

Structure Design and Analysis of Multi-Stage High Efficiency Linear Pumping Unit

, 2017
A multi-section high efficient pumping unit was designed. The pumping unit has a multi-stage structure including forcer part of the use of linear motor and four-stage linear motor extract oil one after another.
Sen Wang, Yan Long Ren, Si Yang Li, Jia Cheng Guo, Hong Kui Yan, Xiu Min Yang, Yang Yang Zhao, Feng Guo   +7 more
core   +1 more source

Ultrasensitive Anti‐Stokes Luminescence Thermometry in Transition Metal Dichalcogenide Monolayers

Advanced Functional Materials, EarlyView.
We demonstrate a highly sensitive nanothermometer using anti‐Stokes photoluminescence, also known as photoluminescence upconversion (UPL), in monolayer tungsten disulfide. A strong resonantly enhanced UPL is observed, confirming the central role of optical phonons in the PL upconversion mechanism.
Sharada Nagarkar, Fahrettin Sarcan, Elanur Hut, Emiliano R. Martins, Stuart A. Cavill, Thomas F. Krauss, Yue Wang   +6 more
wiley   +1 more source

Experiments and Simulation on a Late-Model Wind-Motor Hybrid Pumping Unit

Energies, 2020
Many oil fields are full of wind energy. At present, wind power generation technology has catered to oil fields. A larger wind turbine is used to supply power to several pumping units.
Chunyou Zhang, Liang Wang, Hong Li
doaj   +1 more source

THE EFFICIENCY OF GAS-PUMPING UNITS

ENERGETIKA. Proceedings of CIS higher education institutions and power engineering associations, 2016
. The reliability of the gas transmission network of the JSC “Gazprom Transgaz Belarus” depends on the efficiency of gas compressor units. Pipeline transport takes the first place among all the other ways to deliver gas because it ensures a uniform and uninterrupted supply of gas at minimum costs.
E. I. Kupreev, N. B. Karnitzki
openaire   +3 more sources

PMSM Control Simulation Based on Pumping Unit

, 2014
To study direct drive pumping unit of operating state, permanent magnet synchronous motor open-loop control system was used to model and simulate based on Matlab/Simulink software, and analyzed the waveforms change with different torque.
Zhang, Zikuan, He, Lin
core  

Mechanoluminescent HOF Nanotransducers Enabled Sono‐Optogenetics in Parkinsonian Rats

Advanced Functional Materials, EarlyView.
We present a mechanoluminescent system utilizing porous hydrogen‐bonded organic frameworks (HOFs) as a toolkit for focused ultrasound‐triggered, non‐invasive light delivery to the deep brain in rats. This approach enables the specific activation of PV‐GPe neurons in dopamine‐depleted Parkinson's disease rat models, resulting in a comparable alleviation
Wenliang Wang, Ilya Pyatnitskiy, Yanshu Shi, Kai Wing Kevin Tang, Yi Xie, Sihan Yu, Thomas Wynn, Xiangping Liu, Ju‐Chun Hsieh, Jinmo Jeong, Weilong He, Brinkley Artman, Anakaren Romero Lozano, Xi Shi, Arjun Sangani, Lief E Fenno, Samantha Santacruz, Banglin Chen, Huiliang Wang   +18 more
wiley   +1 more source

Finite Element Modeling and Analysis of Hydraulic Pumping Unit Frame for Offshore Platform

Shiyou jixie, 2016
In view of the low efficiency of the electric submersible pump in offshore heavy oil production, the overall design scheme of new hydraulic pumping unit for offshore platform was proposed. The model for this pumping unit frame has been built and analyzed
Xue Xin, Qi Yaoguang, Yu Yanqun, Zhang Guofu, Meng Shangzhi, Liu Wenbao, Lu Hailong   +6 more
doaj  

Design and analysis for a new energy-saving hydraulic pumping unit

, 2017
With the increasing concern over global energy crisis, energy saving in pumping units is becoming a significant subject. In terms of energy-saving and working efficiency, hydraulic pumping units outperform conventional pumping units.
Jianwen Chen, Zhenhe Li, Yungong Li, Yanjun Huang, Jinchun Song   +4 more
core   +1 more source

Microfabricated Anisotropic Myobundles for the Scalable Production of Cardiac Tissue Grafts

Advanced Functional Materials, EarlyView.
Controlling the anisotropy of cardiac tissue remains an outstanding challenge in the field of cardiac tissue engineering. Here, we introduce an approach to generate anisotropic cardiac myobundles using cell‐adhesive, synthetic, electrospun fibers and stem cell‐derived cardiac fibroblasts.
Maggie E. Jewett, Javiera Jilberto, Margaret E. Stanley, David O. Ntim, Siddhi M. Bhirud, Avianna T. Schroeder, Gonzola X. Anyosa Galvez, Jingyi Xia, Samuel J. DePalma, Emmanouil Agrafiotis, Susan S. Xi, Amanda S. Bluem, Courtney M. Lestock, Adam S. Helms, David A. Nordsletten, Brendon M. Baker   +15 more
wiley   +1 more source