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Electrostatic force of dust deposition originating from contact between particles and photovoltaic glass

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Chinese Physics B 2021年第10期30卷 267-273页

作者： Xing-Cai Li juan Wang Guo-Qing su School of Physics and Electronic-Electrical Engineering Ningxia UniversityYinchuan 750021China Ningxia Key Laboratory of Intelligent Sensing&Desert Information Ningxia UniversityYinchuan 750021China Xinhua College of Ningxia University Yinchuan 750021China

Charged photovoltaic glass produces an electrostatic *** electrostatic field exerts an electrostatic force on dust particles,thus making more dust particles deposited on the *** this paper,the contact electrification between the deposited dust particles and the photovoltaic glass is ***,the surface charge density model of the photovoltaic glass and the electrostatic force of charged particles are *** results show that with the increasing of the particle impact speed and the inclination angle of the photovoltaic panel,the charges on particles increase to different *** a given condition,the electrostatic forces acting on the charged particles at different positions above the glass plate form a bell-shaped distribution at a macro level,and present a maximum value in the center of the *** the distance between the particle and the charged glass decreases,the electrostatic force exerted on the particle increases significantly and fluctuates ***,its mean value is still higher than the force caused by gravity and the adhesion force,reported by some ***,we suggest that photovoltaic glass panels used in the severe wind-sand environment should be made of an anti-static transparent material,which can lessen the dust particles accumulated on the panels.

关键词： particle electrification electrostatic force photovoltaic glass dust deposition

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气囊导尿管插管方法的改进与护理

天津护理 2004年第2期12卷 94-94页

作者：吴素娟广州中医药大学附属深圳医院广东深圳518033

目的 :观察改进气囊导尿管插入方法的效果。方法 :随机将 6 0例男性急诊患者分为插管改进组 34例和对照组 2 6例。结果 :插管改进组无 1例发生肉眼血尿 ,镜下血尿 2例 ;对照组尿道流血 4列 ,肉眼血尿 4例 ,镜下血尿 7例。结论

关键词：气囊导尿管尿道损伤护理

Critical size effect of sand particles on cavitation damage

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Journal of Hydrodynamics 2013年第1期25卷 165-166页

作者： wu Jian-hua GOU Wen-juan College of Water Conservancy and Hydropower Engineering Hohai University

The critical size of the sand particles in liquid is determined by means of the special vibratory apparatus, and it is related to various effects on the cavitation damage. The increase of the sand size or concentration would aggravate the cavitation damage if their sizes are larger than this critical size, conversely, this damage would be relieved.

关键词： cavitation damage sand particle sand size abrasion

Effect of cyclic wetting-drying on tensile mechanical behavior and microstructure of clay-bearing sandstone

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International Journal of Coal Science & Technology 2021年第5期8卷 956-968页

作者： Pingye Guo juan Gu Yi su Jiong Wang Zhanwen Ding State Key Laboratory for Geo-Mechanics and Deep Underground Engineering Beijing 100083China School of Mechanics Architecture and Civil EngineeringChina University of Mining and TechnologyBeijing 100083China Tang Steel International Engineering Technology Corp Tangshan 063000China China Henan Geological and Mineral Resources Construction Engineering(Group)Co. LtdZhengzhou 450007China

The understanding of the weakening mechanism of tensile strength of rock subjected to cyclic wetting-drying is critical for rock *** strength tests were conducted on a total of 35 sandstone specimens with different wetting-drying *** crack propagation process and acoustic emission characteristics of the tested samples were obtained through a high-speed camera and acoustic emission *** results indicate that the tensile strength is observably reduced after cyclic wetting-drying,and the extent of the reduction is not only related to the number of wettingdrying cycle,but also closely related to the clay mineral content of the *** addition,as the cycles of wetting-drying increase,the effect of each single cycle on tensile strength get reduced until it becomes ***,the crack initiation and penetration time is prolonged as the number of wetting-drying cycle increases,which indicates that cyclic wetting-drying weakens the rock stiffness and enhances the ductility of ***,the acoustic emission characteristics of the tested samples further confirmed the ductile behaviour of the sandstone samples with increasing wetting-drying ***,through the analysis of the microstructure and mineral composition of the samples with different wetting-drying cycles,it is concluded that the main weakening mechanisms of sandstones containing clay minerals are frictional reduction,chemical and corrosive deterioration.

关键词： Sandstone Wetting-drying cycle Tensile strength Weakening mechanism Failure characteristics

Potassium channel AKT1 is involved in the auxin-mediated root growth inhibition in Arabidopsis response to low K^+stress

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Journal of Integrative Plant Biology 2017年第12期59卷 895-909页

作者： juan Li Wei-Hua wu Yi Wang State Key Laboratory of Plant Physiology and Biochemistry(SKLPPB) College of Biological SciencesChina Agricultural UniversityBeijing 100193China

The changes in external K^＋ concentration affect plant root growth. However, the molecular mechanism for perceiving a K^＋ signal to modulate root growth remains unknown. It is hypothesized that the K^＋ channel AKTI is involved in low K^＋ sensing in the Arabidopsis root and subsequent regulation of root growth. Along with the decline of external K^＋ concentration, the primary root growth of wild-type plants was gradually inhibited. However, the primary root of the akt1 mutant could still grow under low K^＋（LK） conditions. Application of NAA inhibited akt1 root growth, but promoted wild-type root growth under LK conditions. By using the ProDR5：GFP and ProPIN1：PIN1-GFP lines, we found that LK treatment reduced auxin accumulation in wild-type root tips by degrading PIN1 proteins, which did not occur in the akt1 mutant. The LK-induced PIN1 degradation may be due to the inhibition of vesicle trafficking of PIN1 proteins. In conclusion, our findings indicate that AKT1 is required for an Arabidopsis response to changes in external K^＋, and subsequent regulation of K^＋-dependent root growth by modulating PINt degradation and auxin redistribution in the root.

关键词： Potassium channel AKT1 is involved in the auxin-mediated root growth inhibition in Arabidopsis response to low K stress LK Figure

Novel mutation c.980_983delATTA compound with c.986C>A mutation of the FRMD7 gene in a Chinese family with X-linked idiopathic congenital nystagmus

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2013年第6期14卷 479-486页

作者： Feng-wei SONG Bin-bin CHEN Zhao-hui suN Li-ping wu su-juan ZHAO Qi MIAO Xia-jing TANG Eye Center the Second Affiliated HospitalSchool of MedicineZhejiang University Department of Ophthalmology the First Affiliated Hospital of Huzhou Teachers College Department of Otolaryngology-Head and Neck surgery the First Affiliated HospitalWenzhou Medical College

Objective:To screen mutations in FERM domain-containing protein 7(FRMD7) gene in two Chinese families with X-linked idiopathic congenital nystagmus(XLICN).Methods:Common ophthalmic data and peripheral blood of two Chinese XLICN families(families A and B) were collected after informed *** DNA was prepared from the peripheral blood of members of the two families and from 100 normal *** in the FRMD7 gene were determined by directly sequencing polymerase chain reaction(PCR) ***:We identified a novel mutation c.980_983delATTA compound with c.986C>A mutation in the 11th exon of FRMD7 in family B,and a previously reported splicing mutation c.782G>C(p.R261G) in family *** mutations were detected in patients and female carriers,while they were absent in other relatives or in the 100 normal ***:Our results expand the spectrum of FRMD7 mutations in association with XLICN,and further confirm that the mutations of FRMD7 are the underlying molecular mechanism for XLICN.

关键词： Mutation Idiopathic congenital nystagmus FERM domain-containing protein 7(FRMD7)

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A hydrophilic poly(methyl vinyl ether-alt-maleic acid) polymer as a green, universal, and dual-functional binder for high-performance silicon anode and sulfur cathode

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Journal of Energy Chemistry 2021年第11期30卷 127-135,I0003页

作者： Hao Chen Zhenzhen wu Zhong su Luke Hencz su Chen Cheng Yan Shanqing Zhang Centre for Clean Environment and Energy School of Environment and ScienceGold Coast CampusGriffith UniversityGold CoastQueensland 4222Australia School of Mechanical Medical&Process EngineeringQueensland University of Technology(QUT)BrisbaneQueensland 4000Australia

Binders could play crucial or even decisive roles in the fabrication of low-cost, stable and high-capacity electrodes. This is especially the case for the silicon (Si) anodes and sulfur (S) cathodes that undergo large volume change and active material loss in lithium-ion batteries during prolonged cycles. Herein, a hydrophilic polymer poly(methyl vinyl ether-alt-maleic acid) (PMVEMA) was explored as a dual-functional aqueous binder for the preparation of high-performance silicon anode and sulfur cathode. Benefiting from the dual functions of PMVEMA, i.e., the excellent dispersion ability and strong binding forces, the as-prepared electrodes exhibit improved capacity, rate capability and long-term cycling performance. In particular, the as-prepared Si electrode delivers a high initial discharge capacity of 1346.5 mAh g^(−1) at a high rate of 8.4 A/g and maintains 834.5 mAh g^(−1) after 300 cycles at 4.2 A/g, while the as-prepared S cathode exhibits enhanced cycling performance with high remaining discharge capacities of 663.4 mAh g^(−1) after 100 cycles at 0.2 C and 487.07 mAh g^(−1) after 300 cycles at 1 C, respectively. These encouraging results suggest that PMVEMA could be a universal binder to facilitate the green manufacture of both anode and cathode for high-capacity energy storage systems.

关键词： Dual-functional Aqueous binder Silicon anode sulfur cathode Lithium-ion batteries Lithium-sulfur batteries

A Study of surfactant-Induced Growth of Ag on Ag (111)

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Communications in Theoretical Physics 2008年第12期50卷 1439-1442页

作者： wu Li-Li HU juan-Mei wu Feng-Min College of Mathematics and Physics Information Engineering Zhejiang Normal University Jinhua 321004 China

A new growth model is introduced to describe surfactant-induced growth of Ag on Ag （111） with realistic physical parameters. In this model, the A-S exchange mechanism is considered for the first time. Using the Monte Carlo simulations, the influence of exchange mechanism, surface temperature T, the exchange barrier Eεx, and the coverage of surfactant θM on the growth mode and morphology during multilayer film growth of Ag/Ag （111） are studied in detail Both the referenced value of surfactant coverage and the method to obtain perfect layer-by-layer film in surfactantinduced Ag/Ag （111） system are provided. Our simulation results are consistent with many experimental observations for surfactant-induced growth of Ag on Ag （111）.

关键词： surfactant surface roughness exchange Monte Carlo simulation

NEW DESIGN METHOD FOR HYPOID GEARS

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Chinese Journal of Mechanical Engineering 2005年第3期18卷 325-328页

作者： su Zhijiang wu Xutang Mao Shimin School of Mechanical Engineering Xi＇an Jiaotong University Xi＇an 710049 China

A digital model is presented for the purpose of design, manufacture and measurement of hypoid gear, based on the non-uniform rational B-spline surface （NURBS） method. The digital model and the function-oriented active design technique are combined to form a new design method for hypoid gears. The method is well adaptable to CNC bevel gear cutting machines and CNC-controlled gear inspection machines, and can be used to create the initial machine tool cutting location data or program measurement path. The presented example verifies the method is correct.

关键词： Hypoid gear Digital design Non-uniform rational B-spline surface (NURBS) Function-oriented active design