Results 61 to 70 of about 71,707 (286)
Design of PLC-controlled Control System for Non-beam Pumping Unit
Shiyou jixie, 2018 The beam pumping unit cannot realize automatic control, and is unable to be adjusted with the external environment and incapable of predicting the fault in time, resulting in many inevitable faults in the pumping equipment.
Cao Zhongliang +3 more
doaj
An insight into polarization states of solid-state organic lasers
, 2012 The polarization states of lasers are crucial issues both for practical applications and fundamental research. In general, they depend in a combined manner on the properties of the gain material and on the structure of the electromagnetic modes.
A. Brosseau +18 more
core +2 more sources
Mesoporous Carbon Thin Films with Large Mesopores as Model Material for Electrochemical Applications
Advanced Functional Materials, EarlyView.Mesoporous carbon thin films possessing 70 nm mesopores are prepared on titanium substrates by soft templating of resol resins with a self‐synthesized poly(ethylene oxide)‐block‐poly(hexyl acrylate) block copolymer. A strategy to avoid corrosion of the metal substrate is presented, and the films are extensively characterized in terms of morphology ...
Lysander Q. Wagner +9 more
wiley +1 more source
Plunger Motion Law of Downhole Oil Well Pump under the Condition of Flexible Control
Shiyou jixie, 2022 The flexible control technology of beam pumping system is a kind of variable-speed drive technology.Its purpose is to change the working process of pumping unit and improve the efficiency of oil production,so it is somewhat advanced.However,the previous ...
Duan Zhigang +6 more
doaj
The Effect of Purcell Cavities on the Lifetime of Thermally Activated Delayed Fluorescent Emitters
Advanced Functional Materials, EarlyView.A pressing challenge to OLED displays and lighting is to balance high efficiency and long operational lifetime in the deep blue spectrum. The Purcell effect can reduce the triplet density and hence the probability for destructive energy‐driven triplet annihilation events that limit the OLED lifetime. Here we study of the Purcell effect on two different
Sritoma Paul +4 more
wiley +1 more source
Research and Analysis of the Energy Saving Pulley Reducer
Jixie chuandong, 2016 In order to solve the problem of existing beam pumping unit reducer,the belt transmission mechanism is difficult to meet the long stroke and low speed,the contradiction of the energy requirements and form a complete set of small power motor,and the start
Fan Shiyao, Ren Xiaoming
doaj
Advanced Functional Materials, EarlyView.Fibrous benzenetrispeptide (BTP) hydrogels, fabricated via strain‐promoted azide‐alkyne cycloaddition (SPAAC) crosslinking, form robust, bioinert networks. These hydrogels can support 3D cell culture, where cell viability and colony growth depend on the fiber content.
Ceren C. Pihlamagi +5 more
wiley +1 more source
Low field vortex matter in YBCO: an atomic beam magnetic resonance study
, 2002 We report measurements of the low field structure of the magnetic vortex lattice in an untwinned YBCO single-crystal platelet. Measurements were carried out using a novel atomic beam magnetic resonance (ABMR) technique.
A. Oral +24 more
core +1 more source
Chiral Nanohoops as an Efficient Spin Polarization System
Advanced Functional Materials, EarlyView.Chiral conjugated nanohoops with a central dibenzopentalene unit exhibit 90% spin polarization at low voltage and high conductivity. These properties make them ideal components in molecular spintronics applications. Abstract A central challenge in molecular spintronics is to achieve a high spin polarization at low operating voltages and ambient ...
Anu Gupta +4 more
wiley +1 more source
Kinematic Analysis of Long Stroke Pumping Unit with Post Pulley
Jixie chuandong, 2017 In view of the shortcomings of high peak of crank torque and polished rod load,short stroke and serious wear of steel wire rope,the structural characteristics of the conventional beam pumping unit are analyzed.
Sun Wenbin +3 more
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