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Evaluation of Layered Inorganic Nano-powder modified Bitumen

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武汉理工大学学报 2010年第17期32卷 51-54页

作者： HAN J WU S P CHEN m y yu m Key Laboratory of Silicate materials Science and Engineering Wuhan University of TechnologyWuhan 430070China

Thermal oxidative and aging as an inevitable process in the practical application of road asphalt has great effect on the properties of asphalt. In this paper,the influences of short-term thermal oxidative ageing and ultraviolet radiation(UV) aging on the dynamic viscosity,penetration,softening point and rheological properties of two kinds of layered inorganic nano-powder including organo-modified montmorillonite (OmmT) and nanometer brucite (mg(OH)2) modified asphalts were studied respectively. The rheological properties of these binders have been determined using a dynamic shear rheometer (DSR) through temperatures sweep *** rheological and physical analysis showed the two major influences of ageing on the properties for two kinds of layered inorganic nano-powder modified bitumens. On one hand,ageing decreased the viscous behaviors of modified binders,on the other hand,ageing improved the elastic behaviors of modified binders. The performances of binders after aging depended on the combined effect between the modifier and the bitumen. Both the two modifiers resisted the aging of bitumens and the effect of OmmT was better.

关键词： ageing evaluation layered inorganic nano-powder modified bitumen

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Pathway to turbulence as governed by a generalized nonlinear Schrodinger equation

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Pathway to turbulence as governed by a generalized nonlinear...

SIGNIFICANCE OF PRE-S2 PROTEIN AND ITS ANTIBODy IN CHILDREN WITH HBV INFECTIONS

第十六届全国等离子体科学技术会议暨第一届全国等离子体医学研讨会

作者： Shaoyan Cui m.y.yu School of mathematics and Statistics Science Ludong University Institute for Fusion Theory and Simulation Department of PhysicsZhejiang University

Evolution of a localized large-amplitude pulse in an isotropic external potential well is investigated in two dimensions using a cubic nonlinear Schrodinger equation generalized to allow for complex *** a result,the generalized equation is also in the form of a generalized reaction-diffusion *** equations are ubiquitous in physics, chemistry,biology,engineering,as well as in economics and *** this work,viscous heating and nonlinear damping are *** is found that the initial pulse first suffers modulational instability and then collapses into the shortest-wavelength modes of very large amplitudes because of the enhanced viscous *** cascading back into the longer wavelength modes then takes place until the system finally settles down into a state of fairly homogeneous stationary *** a scenario can occur because,for the parameters chosen,balance of the total system energy can take place during the evolution even though the system is open.

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中华医学杂志(英文版) 1991年第2期104卷 124-127页

作者： m X Zou m y yu H F Zhang J Q Huang J m Chen 302 Hospital of PLA Beijing.

Pre-S2 protein and its antibody were detected in 130 children with hepatitis B virus (HBV) infection and 30 with T6 hepatitis B (HB) vaccination. The resuits showed that pre-S2 was positive in most chronic persistent hepatitis (CPH) and chronic active hepatitis(CAH) patients, while anti-pre-S2 was positive in only 8% (2/92 cases) and 11.5% (3/26 cases) respectively. The positive rate of anti-pre-S2 was 78.9%(15/19 cases) in cases at the convalescent stage of acute hepatitis B, 91.7% (55/60 cases) in eases with T6 HB vaccination and 83.3%(25.30 cases) in naturally acquired anti-HBs children, while pre-S2 was not noted. Anti-pre-S2 was negatively related to ALT and positively to anti-HBs (Pmarker for HBV infection, and anti-pre-S2 may indicate a favourable prognosis of HBV infection. There was no correlation between anti-pre-S2 and pathogenic damages induced by HBV.

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Nonlinear branched flow of intense laser light in randomly uneven media

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matter and Radiation at Extremes 2023年第2期8卷 25-32页

作者： K.Jiang T.W.Huang C.N.Wu m.y.yu H.Zhang S.Z.Wu H.B.Zhuo A.Pukhov C.T.Zhou S.C.Ruan College of Applied Sciences Shenzhen UniversityShenzhen 518060People’s Republic of China Shenzhen Key Laboratory of Ultraintense Laser and Advanced material Technology Center for Advanced Material Diagnostic Technologyand College of Engineering PhysicsShenzhen Technology UniversityShenzhen 518118People’s Republic of China Institut für Theoretische Physik I Heinrich-Heine-Universität Düsseldorf40225 DüsseldorfGermany

Branched flow is an interesting phenomenon that can occur in diverse *** is usually linear in the sense that the flow does not alter the properties of the *** flow of light on thin films has recently been *** is therefore of interest to know whether nonlinear light branching can also ***,using particle-in-cell simulations,we find that in the case of an intense laser propagating through a randomly uneven medium,cascading local photoionization by the incident laser,together with the response of freed electrons in the strong laser fields,triggers space–time-dependent optical *** resulting branching pattern depends dramatically on the laser *** is,the branching here is distinct from the existing linear *** observed branching properties agree well with theoretical analyses based on the Helmholtz *** branched propagation of intense lasers potentially opens up a new area for laser–matter interaction and may be relevant to other branching phenomena of a nonlinear nature.

关键词： laser intense flow

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THE ACTION OF RADIX REHmANNIAE AND PLASTRUm TESTUDINIS ON BETA- ADRENERGIC RECEPTOR-cAmP SySTEm

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中华医学杂志(英文版) 1987年第11期100卷 898-898页

作者： N y yi G P Feng y m yu y Z Lin Z X Rong Z Q Xia S D Zhang y E Hu Department of Pharmacology Shanghai Second Medical University Isotope Laboratory Shanghai Second Medical University Shanghai

mouse and rat pathological models were produced by injections of thyroid hormone (T3 or T4, model I) or hydrocortisone (HC, model II). A single subcutaneous dose of isoproterenol (ISO) caused plasma cAmP to peak in 5-15 min which was significantly higher in mouse models I and II than in normal mice. Daily oral administration of a decoction of two yin tonics-Radix Rehmanniae (RR) and Plastrum Testudinis (PT) reduced peak cAmP in both models.3H-DHA binding assay re vealed significant elevations of the number of β-adrenergic receptors in rat models I and II. Decoction RR and PT restored the peaks to normal range. yang tonics Radix Aconiti praeparata (RAP) and Cortex Cinnamomi (CC) showcd contradictory effects on these models. It seems unlikely that the action of the two tonics promotes the clearance of injected hormones, since injected hormone RIA in plasma showed no differences between yin tonics treated and untreated models. The therapeutic effects of these two yin tonics on "yin deficiency" syndrome of hyperthyroidism or hyperfunction of the adrenal cortex is very probably related to their actions on the β-adrenoreceptor-cAmP system as stated.

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Attitude surveying of the tunnel shield

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Attitude surveying of the tunnel shield

The effect of coefficients in the Generalized nonlinear Schrodinger equation on turbulence

作者： y.m.yu Shanghai Tunnel Engineering Co.,Ltd.,Shanghai,P.R.China J.X.Wang Dept.of Surveying and Geo-Informatics,Tongji University,Shanghai,P.R.China

The paper presents an attitude determination method for the tunnel shield in the tunnel construction. Before the construction,the relation between the characteristic points of the tunnel shield and the reflectors is determined by the initial *** corresponding parameters are taken as the initial *** the construction,the transformation between the real-time locations and the initial conditions of the reflectors is determined by measuring the coordinates of the reflectors in the project coordinate ***,the real-time positions of the characteristic points of the tunnel shield can be *** to the designed axis,the deviation of the tunnel shield is calculated,which will be employed to control the direction of the tunnel *** numerical results show that the presented method is feasible and efficient in the real tunnel construction application.

关键词： Attitude surveying of the tunnel shield

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The effect of coefficients in the Generalized nonlinear Schr...

Boosting bidirectional sulfur conversion enabled by introducing boron-doped atoms and phosphorus vacancies in Ni2P for lithium-sulfur batteries

第十五届全国等离子体科学技术会议

作者： Shaoyan Cui1,~ DianZhao2 m.y.yu2 1.School of mathematics and Information,Ludong University,yantai 264025,China 2.Institute for Fusion Theory and Simulation,Department of Physics,Zhejiang University, Hangzhou 310027,China

A two-dimensional generalized cubic nonlinear Schrodinger equation with complex coefficients is used to investigate the evolution of a finite-amplitude localized initial *** is found that the coefficients in the nonli...

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Journal of Energy Chemistry 2025年第1期100卷 760-769页

作者： Lin Peng yu Bai Hang Li meixiu Qu Zhenhua Wang Kening Sun Advanced Research Institute of multidisciplinary Science Beijing Institute of Technology Beijing Key Laboratory of Chemical Power Source and Green Catalysis School of Chemistry and Chemical Engineering Beijing Institute of Technology

Lithium-sulfur （Li-S） batteries have gained great attention due to the high theoretical energy density and low cost,yet their further commercialization has been obstructed by the notorious shuttle effect and sluggish redox ***,we supply a strategy to optimize the electron structure of Ni2P by concurrently introducing B-doped atoms and P vacancies in Ni2P （Vp-B-Ni2P）,thereby enhancing the bidirectional sulfur *** study indicates that the simultaneous introduction of B-doped atoms and P vacancies in Ni2P causes the redistribution of electron around Ni atoms,bringing about the upward shift of d-band center of Ni atoms and effective d-p orbital hybridization between Ni atoms and sulfur species,thus strengthening the chemical anchoring for lithium polysulfides （LiPSs） as well as expediting the bidirectional conversion kinetics of sulfur ***,theoretical calculations reveal that the incorporation of B-doped atoms and P vacancies in Ni2P selectively promotes Li2S dissolution and nucleation ***,the Li-S batteries with Vp-B-Ni2P-separators present outstanding rate ability of 777 m A h g-1at 5 C and high areal capacity of 8.03 mA h cm-2under E/S of 5μL mg-1and sulfur loading of 7.20 mg *** work elucidates that introducing heteroatom and vacancy in metal phosphide collaboratively regulates the electron structure to accelerate bidirectional sulfur conversion.

关键词： Lithium sulfur batteries

Fluorinated poly(p-triphenylene isatin) anion exchange membranes based on hydrophilic hydroxyl side chain modulation for fuel cells

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Journal of Energy Chemistry 2025年第1期100卷 702-709页

作者： yiman Gu yanchao Zhang Zhanyu Li yijia Lei Baozeng Sun Xiaoyu yu Zhe Wang College of Chemistry and Life Science Changchun University of Technology College of Chemical Engineering Changchun University of Technology School of materials Science and Engineering Changchun University of Technology Key Laboratory of Advanced Functional Polymer membrane materials of Jilin Province

The development of alkaline fuel cells is moving forward at an accelerated pace,and the application of ether-free bonded polymers to anion exchange membranes （AEms） has been widely ***,the question of the“trade-off”between AEm ionic conductivity and dimensional stability remains *** strategy of inducing microphase separation to improve the performance of AEm has attracted much attention recently,but the design of optimal molecular structures is still being ***,this work introduced different ratios of 3-bromo-1,1,1-trifluoroacetone （x=40,50,and 60） into the main chain of poly（p-terphenylene isatin）.Because fluorinated groups have excellent hydrophobicity,hydrophilic hydroxyl-containing side chains are introduced to jointly adjust the formation of phase separation *** results show that PTI-PTF50-NOH AEm with the appropriate fluorinated group ratio has the best ionic conductivity and alkali stability under the combined effect of *** has an ionic conductivity of 133.83 mS cm-1at 80°*** addition,the OH-conductivity remains at 89%of the initial value at 80°C and 3 m KOH for 1056 h of *** cell polarization curve based on PTI-PTF50-NOH shows a power density of 734.76 mW cm-2at a current density of 1807.7 mA cm-2.

关键词： Anion exchange membranes Poly(p-terphenylene isatin) Hydrophilic-hydrophobic phase separation Fluorinated group