Results 81 to 90 of about 148,026 (279)

MODELING OF DYNAMOMETER CARDS IN QUASISTEADY OPERATION MODES OF SUCKER ROD PUMPS

Известия высших учебных заведений: Нефть и газ, 2015
The article presents the dependences, permitting to calculate the fluid level in the annulus of the sucker rod pump (SRP) at step changing of the beam-pumping unit actions number and to simulate the SRP dynamometer cards .
V. D. Kovshov, M. E. Sidorov, S. V. Svetlakova   +2 more
doaj   +1 more source

On‐Water Surface Synthesis of 2D Conjugated Metal–Organic Framework Films With Controllable Layer Orientation Enabling High‐Performance Chemiresistive Sensing

Advanced Materials, EarlyView.
Layer orientation dictates charge transport in 2D conjugated metal–organic frameworks, yet controllable methods remain scarce. We report surfactant monolayer‐assisted on‐water synthesis of cm2‐scale Ni‐HHTP films with programmable face‐on and edge‐on orientations.
Jianjun Zhang, Víctor García‐López, Yutong Wu, Shuai Fu, Yucong Chen, Arsh S. Hazrah, Petko Petkov, Mike Hambsch, Feng Ni, Alina Müller, Ye Yang, Leif Riemenschneider, Shirong Huang, Albertus Mattheüs Sandee, Yilv Guo, David Silva‐Brea, Jan‐Ole Joswig, Stefan C. B. Mannsfeld, Thomas Heine, Gianaurelio Cuniberti, Mischa Bonn, Zhiyong Wang, Xinliang Feng   +22 more
wiley   +1 more source

Motion Analysis of Double Crank 2K-H Gear Train Large Swing Angle Reversing Device

Jixie chuandong, 2021
Aiming at the shortcomings of current beam pumping units with small stroke，large energy consumption，and poor movement performance，as well as the general problem of low reliability and unstable transmission of beam less pumping units，a design scheme of ...
Bingyi Li, Shimin Dong, Jiani Zhang, Yü Yang, Qin Li, Yong Wu, Yang Zhang   +6 more
doaj  

A Dual‐Bioresponsive and Programmable Microneedle Matrix as a Bioinspired Coupler for Orchestrating Diabetic Bone Regeneration

Advanced Materials, EarlyView.
This project developed a smart bandage‐like patch (a microneedle array) for repairing diabetic bone damage. It intelligently senses signals from infection and inflammation, then releases its medicines in a specific, timed sequence: first an antibacterial agent, then an anti‐inflammatory agent, and finally growth factors.
Yu Wang, Rui Chen, Yu Chen, Haowen Lu, Yuchen Qian, Zhiheng Gao, Zheming Shen, Xiaofei Zheng, Huilin Yang, Jun Zou, Yusen Qiao   +10 more
wiley   +1 more source

Research on Power Saving Positive Torque and Constant Power Pumping Unit and Tracking Technique System

, 2012
Based on the analysis of the negative torque of the common beam pumping unit resulting in lower system efficiency, energy consumption, load alternating amplitude, poor working conditions, the theory of pumping unit with positive torque is proposed, a ...
Li, Juhui, Han, Xiuting, Han, Mei, Li, Juan, Chen, Jian, Xu, Jinchao   +5 more
core   +1 more source

Numerical Study on the Influence of Combined Rectification Facilities on the Flow in the Forebay of Pumping Station

, 2023
The flow pattern of the forebay of the pumping station has a considerable effect on the operating efficiency and stability of the pump unit. A good forebay flow pattern can enable the pump unit to improve efficiency and operating conditions.
Yaping Zhao, Pengli Zhang, Xiaobo Zheng, Wenjing Zhang, Yue Yu   +4 more
core   +1 more source

Experimental Study on Hydraulic Coupling for Pumping Unit

Shiyou jixie, 2016
Using the hydraulic coupling gearbox power unit, and integrating the adjustable speed motor, coupling and gearbox to one power unit could reduce the energy consumption of the beam pumping unit.
Fu Yarong, Wang Pengju, Yu Zhiming, Sun Xuefeng, Gao Boxiang, Wang Junwen, Guo Qingqun   +6 more
doaj  

Robust characterization of microfabricated atomic beams on a six-month time scale

Physical Review Research, 2020
Miniature atomic beams can provide new functionalities for atom-based sensing instruments such as atomic clocks and interferometers. We recently demonstrated a planar silicon device for generating well-collimated thermal atomic beams [Nat. Commun.
Chao Li (李超), Bochao Wei (魏博超), Xiao Chai (柴啸), Jeremy Yang, Anosh Daruwalla, Farrokh Ayazi, C. Raman   +6 more
doaj   +1 more source

End‐to‐End Sensing Systems for Breast Cancer: From Wearables for Early Detection to Lab‐Based Diagnosis Chips

Advanced Materials Technologies, EarlyView.
This review explores advances in wearable and lab‐on‐chip technologies for breast cancer detection. Covering tactile, thermal, ultrasound, microwave, electrical impedance tomography, electrochemical, microelectromechanical, and optical systems, it highlights innovations in flexible electronics, nanomaterials, and machine learning.
Neshika Wijewardhane, Lyn I. Jones, Richard M. Martin, Helen Winter, Faezeh Arab Hassani   +4 more
wiley   +1 more source

Faraday Rotation of Pulsed and Continuous-wave Light in Atomic Vapour [PDF]

, 2011
The absorptive and dispersive properties of a Doppler-broadened vapour of rubidium atoms is investigated. A detailed model of the atom-light interaction is developed and found to be in excellent agreement with experiment in the regime where the ...
SIDDONS, PAUL
core