Sodium nickel phosphate (NaNiPO4, NNP) is an attractive cathode material for high performance supercapacitors due to its abundance of active sites oxidation/reduction, highly stable framework structure, etc. However, disadvantages low electric conductivity, disturbances impure crystalline phase, and the numerous pores/gaps produced by agglomerated polycrystalline morphologies in this often limit electrochemical performance. Herein, single-crystalline NNP rod-like nanoparticles with phase...

Mn-based mixed phosphate Na4Mn3(PO4)2(P2O7) (NMPP) is a promising cathode for high-potential, low-cost and eco-friendly sodium-ion batteries. However, this material still faces some bottleneck issues in terms of low conductivity, disturbance impure crystalline phase, micron-sized agglomerated particles the Mn3+ Jahn-Teller effect. Herein, Mg-substituted NMPP (NM2.7Mg0.3PP)@C composite was constructed via modified solution combustion subsequent calcination treatment. The obtained NM2.7Mg0.3PP...

purpose. Adrenomedullin is a multifunctional regulatory peptide known to inhibit the migration of smooth muscle cells. In vitro studies were performed identify whether adrenomedullin (ADM) also inhibits RPE The aberrant behavior these cells an early event in proliferative vitreoretinopathy, and designed determine how ADM acts on at second-messenger level. methods. Migration cultured human was determined by Boyden chamber method, using 10% fetal calf serum (FCS) as chemotactic factor....

The infrared detection has been widely used in electrical industry with the safety, high sensitivity, efficiency and calculability. Referring to technical regulations such as Application rules of diagnosis for live equipment(DL/T 664-2008), only image feature temperature difference can be indicated heating equipment caused by voltage. quantitative analysis internal defects parameters capacitance dielectric loss images hasn't developed. In order guide precise detective diagnose electical...

Two winding insulation breakdown failures in Extra High Voltage transformers are investigated. The discovered cause, partial discharge development between turns, which is normally considered rare, studied through lab simulation. Simplified samples tested under a combination of various environmental conditions, including the electric field, temperature and humidity. Studies revealed that deterioration oil-paper transformer can be defined four stages from initiation to final according detected...

This paper makes in-depth research on the vibration of distribution transformer in operation. It points out mainly from iron core and winding, sets up mechanical model winding. The ANSYS software is used to conduct finite element simulation for enclosure affected by internal transformer. results show that most serious occurs central tank's top part, so this part should be considered as important test experimental study physical transformer, arranges several acceleration sensors tank...

Moisture has strong influence on insulation performance of oil-pressboard system in power transformer. oil and pressboard can be obtained from Oommen paper equilibrium curves under constant temperature condition. Temperature transformer is related to its load the atmospheric temperature. If or changed, will work transient In present, there are few attentions disequilibrium moisture this paper, a test been set up which consists programmable oven, Karl Fischer meter samples. Two kinds...

Moisture has strong influence on insulation performance of oil pressboard system in power transformer. immersed is uniform under constant temperature condition. can be calculated according Oommen paper equilibrium curves. Temperature transformer related to the atmospheric and load. If or load changed, will work transient increased, moisture move from oil; if decreased, pressboard. In this case, distribution un-uniform. The ununiform ignored very thin However, it important understand thick...

In this paper the key problems related to structural theory of sheet space system are discussed. The principles for selection structure form and mechanical analysis described briefly. For purpose simplifying design main functions professional software is narrated at end some diagrams showing influence imperfection on stability also attached paper.

Warship electrical power propulsion system is researched, multi-phase permanent magnet synchronous motor control has expectant optimal dynamic performance under appointed condition, through modeling of screw propeller load application inverse methods nonlinear and optimization design controller parameters, based on the mathematic model characteristics system. The uncertainty parameters can worsen feedback linearization effect system, not achieving performance, even make unstable. extent...

With the rapid development of urban-rural integration, distributed generation and electric vehicles, distribution network presents characteristics multisource, interconnection ubiquity, which puts forward higher requirements for security, reliability, interactivity adaptability power system. Based on urgent demand transformer short-circuit test, this paper combines energy storage supply technology high-power inverter multiple technology. The double feedback automatic constant voltage design...

Live detection and testing items are an indispensable method for diagnosing the status of substation equipment discovering hidden dangers defects. At present, input data is mainly by manual, there problems such as large workload, low efficiency, error-proneness. An automatic acquisition proposed in this paper. This captures screen images electric power meters, then uses OCR (Optical Character Recognition) to automatically identify from images, them into report automatically. The experimental...

: Energy consumption by small and medium enterprises (SMEs) is increasingly becoming a matter of profitability for many businesses source concern Government agencies. Recognizing the need to improve SME’s energy consumption, NSW - Office Environment Heritage (NSW-OEH) has successfully implemented business-focused efficiency program. The program involved individual audits conducted certified assessors, estimating actual use appliances providing recommendations retrofitting more efficient...

Following the investigation of two recent transformer failures in winding insulation, researchers have carried out experiments to identify cause failure, which was found be partial discharge initiation between turns under harsh environment and its development breakdown normal operation condition over a long period. Further studies were simulate entire `life' inter-turn discharges, i.e., from final oil-paper insulation. A lab test platform built evolution such discharge, record all necessary...

Abstract Infrared detection of substation equipment has become one the important means for live power grid equipment. The insulation fault and defect electrical in operation can be found by using infrared thermal imaging technology. image deep learning model usually needs a very large computational cost storage space, which greatly limits application embedded terminal. In order to apply well devices with limited resources, this paper proposes lossless compression method equipment, reduce...

Abstract In recent years, infrared detection technology is widely used in the field of state power equipment. It can timely and effectively find equipment defects avoid further development defects. However, conventional manual inspection has some problems, such as heavy workload, long time-consuming low efficiency. Based on research image intelligent substation based deep learning algorithm digital lossless compression technology, a set video diagnosis device edge calculation developed...

In this work, a magnetically recoverable SnFe2O4/Bi2WO6 (SFO/BWO) Z-scheme heterojunction was successfully prepared by simple one-step hydrothermal process. The 7.5%SFO/BWO nanocomposite exhibited excellent photocatalytic performance, with degradation efficiency of 96.12% for Rhodamine B (RhB) within 120 min, which were respectively 1.64 and 2.07 times greater than that pure Bi2WO6 (BWO) SnFe2O4 (SFO). This obvious improvement in the performance benefited from increase separation...

As a novel photocatalyst with visible light responsiveness, Bi2WO6 has excellent activity in treating wastewater containing organic pollutants and noble metals. However, its photocatalytic action is limited due to the rapid recombination of photogenerated electrons holes. Based on study Bi2WO6, type Ⅱ heterojunction (WO3/Bi2WO6) Z-scheme (CdS/Bi2WO6) were constructed. Composites exhibited higher catalytic than pure Bi2WO6. The degradation efficiency RhB(50mg/L) Cr(VI) (50mg/L) by...

Abstract Computer has been used as a new teaching means in various major fields. Compared with traditional culture courses, physical education is not closely related to computer. The application of computer-aided technology many zone quite different from that education. In order make the combination two produce best practical effect, students have interesting learning and their practice sports more efficient, this paper puts forward some special ideas for improvement by analyzing CAT teaching.