1—elastic and thermal properties of mass concrete

... interactions between nanofillers and polymer chains Therefore, this led to a reduction of the lubricating effect of nanofillers as well as an increase of the effect of the formation of the nanomaterial ... carbonyl groups and hydroxyl groups indicated that the addition of NBR and N15 filler into re-ABS enhanced the thermal stability of the materials The change of the peak position of -CN and =CH vibrations ... dynamometer in terms of the viscosity of materials 3 Results and Discussion 3.1 Morphology and mechanical performance of the re-ABS/NBR blend The mechanical properties of the re-ABS/NBR blends

Ngày tải lên: 16/12/2017, 10:26

... morphology of OPC and POFA concrete mixtures with and without carpet fibers at designated temperatures Fig 11 reveals the SEM of unheated and heated concrete specimens exposed to 200 and 800
C The SEM of ... mechanical properties of the concrete, stated byDü
genci et al (2015)andMa et al (2015).Xiao and Falkner (2006)interpreted the structural integrity offiber-reinforced concrete in terms of mass loss ... quality and homogeneity of concrete specimens to determine the existence of pores and cracks.Fig 6displays the variations in the UPV of the concrete mixtures containing carpet fibers and POFA exposed

Ngày tải lên: 12/01/2020, 03:46

... presence of ONieAl LDH nanofiller (1, 3, 5, and 7 wt.%) The PS nanocomposites were characterized for their structural, thermal and mechanical properties The dispersion and morphology of the obtained ... studies involved evaluation of impact strength, tensile, and flexural properties of the nanocomposites Specimens having dimensions of 168 13  3 mm3of pristine PS and the nanocomposites were ... investigated by X-ray diffraction (XRD) and transmission electron microscopy (TEM) Mechanical and thermal properties of the PS nanocomposites as a function of LDH content were examined by tensile

Ngày tải lên: 27/01/2021, 06:25

... elastic properties of z-GaN and hexagonal AlN, GaN and InN By using DFT and plane-wave calculations, the author [8] obtained elastic properties of these materials at zero pressure Sherwin and Drummond ... experimental and theoretical studies of elastic and mechanical properties of w-GaN under high-pressure are very limited Therefore, the main goal of this work is to give a comprehensive study of the ... previous studies Figure 3 Variations of Pugh’s ratio and Poisson’s ratio of w-GaN with pressure Figure 4 Variations of Kleinman parameter and Zener anisotropy factor of w-GaN with pressure Additionally,

Ngày tải lên: 29/05/2022, 02:47

... morphology, porosity and the thermal properties The correlation between aluminum proportions in CrAlN coatings and his thermal properties revealed that the conductivity and the diffusivity are ... modulus of substrate,Ȟs: Poisson’s ratio of substrate, es: Thikness of substrate, ef : Thickness of the film,R0: radius of curvature before deposition, R: radius of curvature after deposition, And ... towards a stabilizing values of 2,8 W.m-1.K- 1for the thermal conductivity and 5×10-7m2.s-1for the thermal diffusivity The thermal properties became constant for a percentage of aluminium higher than

Ngày tải lên: 02/11/2022, 10:39

... GCMM 2014 Mechanical and thermal properties of horn fibre reinforced polypropylene composites a Department of Mechanical Engineering, C.Abdul Hakeem College of Engineering and Technology, Melvisharam, ... fibre (HF) and polypropylene (PP) Physical, mechanical, thermal and micro-structural properties of HF/PP composites with varying fibre wt% (5%, 10%, 15% and 20%) have been characterized and compared ... by Tasneem Zahra Rizvi and Muhammad Abdullah Khan [2] Structure and mechanical properties of proteins have been discussed by Marc Andre Meyers et al [3] Tensile properties of various plant-based

Ngày tải lên: 02/11/2022, 14:30

... This guide reports data on the thermal properties of concrete and masonry constituents, masonry units, and systems of materials and products that form building components. This guide includes consideration of thermal  massintertia ...  adopted energy­conservation building codes and standards that apply to the design and construction of buildings. Thedesign of energy­conserving buildings now requires an expanded understanding of the thermal properties ofthe building envelope and the materials that comprise the envelope system ... the individual thermal resistances of the inside surface air film, the inner wythe of concrete, the insulation,the outer wythe of concrete, and the outside surface air film and then take the reciprocal of this sum. The

Ngày tải lên: 18/10/2022, 20:34

... dimensions: σ=E/j=neµ) Ohms/square ⇒ Note, if L=W, then R= ρ /t independent of magnitude of L and W Useful for working with films of thickness, t R R R © H.L Tuller-2001 R=V/I; How to Make Resistance ... Conductivity of Metals? • Drude model: Sea of electrons – all electrons are bound to ion atom cores except valence electrons – ignore cores – electron gas © E.A Fitzgerald-1999 Schematic model of ... electron! Constant E gives ever-increasing v Trang 53.225 9 Equation of Motion - Impact of Collisions Assume: • probability of collision in time dt = dt/τ • time varying field F(t) v(t+dt) = (1-

Ngày tải lên: 11/08/2014, 14:20

... genotypic and functional properties of HIV-1 env shortly after transmission We present the first detailed comparisons of the macrophage tropism of infant and maternal env variants and their sensitivity ... the geno-types and phenogeno-types of full-lengthenv molecular clones from HIV-1 infected mother-infant pairs Better under-standing of the genotypic and functional properties of transmittedenv ... between maternal and infant clones The V3 loop charge and glycosylation are predictive of co-receptor tropism [19,20] Examination of charge and glycosylation of the V3 loops of ourenv clones

Ngày tải lên: 13/08/2014, 01:21

... Institute of Infection, Immunity and Inflammation, School of Molecular Medical Sciences, The University of Nottingham, Nottingham NG7 2UH, UK † Division of Otorhinolaryngology, School of Medical and ... mDCs and moDCs [12] and moDCs and KG-1 cells [13], but no studies have compared the proteomes of all three cell types In this study we compare the proteomes of mDCs, moDCs and KG-1 cells, and ... higher levels of key inflammatory (IL-1β, IL-6 and IL-8) and regulatory (IL-10) cytokines, compared to moDCs and KG-1 cells Levels of IL-1β, IL-6, IL-8 and IL-10 were dose depend-ent, and following

Ngày tải lên: 14/08/2014, 18:20

... Research and Information AssociationChartered Institution of Building Services EngineersDepartment of Energy (Energy Efficiency Office)Department of Energy (Gas Standards) Department of the Environment ... drafting of the standard, through sub-committees and panels: Association of Consulting EngineersBritish Paper and Board Industry Federation (PIF)Institution of Chemical Engineers Institution of Mechanical ... prepared under the direction of the Refrigeration, Heating and Air Conditioning Standards Committee, was published under the authority of the Board of BSI and comes The following BSI references

Ngày tải lên: 28/09/2014, 23:11

... Thermal Stresses and Temperature Control of Mass Concrete Thermal Stresses and Temperature Control of Mass Concrete Zhu Bofang China Institute of Water Resources and Hydropower Research and ... Variation of Temperature and Thermal Stress of Mass Concrete with Time The Variation of Temperature of Mass Concrete with Time Because of the large size, the variation of temperature in a mass concrete ... of thermal stress and temperature control of mass concrete, including two basic theorems of creep of nonhomogeneous concrete structures, the law of variation, and the methods of computation of...

Ngày tải lên: 21/04/2015, 13:38

... MWCNT in case of former and with wt% in case of the latter Electrical Properties Fig SEM images of a raw, b acid modified-MWCNTs and c amide-MWCNTs As in the case of TS, the YM of the amide-MWCNTs/ ... readings of voltage drops at different portions of the sample Result and Discussion FTIR Studies Characterization Fourier Transform Infrared Spectroscopy Functionalization of MWCNTs and conversion of ... duration and prolonged use between 200 and 350 °C without much deterioration in mechanical and other properties Polyimides are produced by the condensation reaction of an aromatic dianhydride and...

Ngày tải lên: 22/06/2014, 01:20

... (2009) 4:420–430 and ‘c’ is the amount (phr) of prevulcanized SBR gel added into the NR latex Characterization of Gelled Latex Samples and Measurements of Various Properties of Gel Filled Rubbers ... increase in the amount of crosslinking tends to level off, as evident from gel content and crosslink density values of SBS2/SBS3 and NS2/NS3 systems This is because of the saturation of sites available ... matrix and SBS gels were mixed with NR at a given concentration, to investigate their effect on the morphology, mechanical, dynamic mechanical and thermal properties of raw SBR and NR Morphology of...

Ngày tải lên: 22/06/2014, 01:20

... (b)] and x= 0.5 [(c) and (d)] and x= 0.6 [(e) and (f)] compounds 106 Figure 3.23: Temperature dependence of ′ and ′′ at f = 100 kHz [(a) and (b)] and f = MHz [(c) and (d)] under 0H ... [(a) and (b)] and x= 0.2 [(c) and (d)] compounds 105 Figure 3.22: Temperature dependence of  and ’’ under zero field for selected frequencies (f = 0.1-5 MHz) for x= 0.4 [(a) and (b)] and x= ... Magnetocaloric effect and magnetothermopower in xLaxSr0.3MnO3 Sm0.7- 196 6.1.2 Electrical, magnetic and magnetothermal properties of La0.7-xPrxCa0.3MnO3 198 6.1.3 Electrical and thermal transport...

Ngày tải lên: 10/09/2015, 09:11

... (a) Volume fraction of polymer (Φ) as a function of no showing fraction of chains in the random conformation(ξ) of 0.5, 0.7 and 0.9 ξ is obtained from quantitative modeling of each UV-vis solution-state ... length of PBTTT repeat unit; Mn,o is the number average molecular weight given by [(no* molar mass of repeat unit) + molar mass of end unit) 30 2.3.2 Determination of chain conformational properties ... 63 Figure 3.5 d-spacings of (100), (200) and (010) as a function of temperature (010) spacing of rrP3HT of 3.76Å is also shown 64 Figure 3.6 Dependence of crystallinity on temperature...

Ngày tải lên: 11/09/2015, 09:57

... Hot Topics in Thermal Analysis and Calorimetry Volume Series Editor: Judit Simon, Budapest University of Technology and Economics, Hungary Thermal Properties of Green Polymers and Biocomposites ... CHARACTERIZATION OF GREEN POLYMERS Thermal Analysis 13 Other Characterization Methods 25 Chapter THERMAL PROPERTIES OF CELLULOSE AND ITS DERIVATIVES Introduction 39 Thermal Properties ... high profile research subjects in academic and industrial fields The authors of this book have continuously made efforts to investigate the properties, especially thermal properties, of green...

Ngày tải lên: 11/08/2014, 06:20

... characteristics of the "Sassi of Matera" and "Trulli of Alberobello" In the South of Italy, the sites of the "Sassi of Matera" (Figure 1a) (classified as humanity world heritage in 1993) and "Trulli of Alberobello" ... consisted of the measurement of thermal conductance of two different typologies of building wall: a wall in blocks of calcarenite sandstone assembled with mortar, typical of the constructions of "Sassi ... Polytechnic of Bari, were performed on some samples of calcarenite sandstone and calcareous stone of Fasano The goal of the laboratory tests was to experimentally find the thermophysical properties of...

Ngày tải lên: 05/09/2013, 14:58

... mRNA and also of its own transcript For this reason, the level of mRNA for the wildtype form of MCPIP and the level of mRNA for IL-1b (Fig 5A, lane 3) were lower in comparison to the level of mRNA ... clarify the dynamics and features of this protein Role of MCPIP in regulation of the endogenous IL-1b transcript level After identification of a PIN domain in the MCPIP by use of bioinformatics, ... lanes 2,3 and 4, lower band) The levels of mutant and wild-type MCPIP mRNAs were higher when these vectors were co-transfected with a vector overexpressing IL-1b (Fig 5, lanes and 4, upper bands)...

Ngày tải lên: 18/02/2014, 14:20

... ultrasonication time effects on sediment and the thermal conductivity of the carbon nanotubeethylene glycol nanofluids and found that thermal conductivity of the nanofluids increased with sonication ... B and n are constants, and t is the sonication time The data in Figures 13 and 14 were fit to curves of the forms given by (Equations and 2) The values of the constants and the coefficients of ... Ultrasonication effects on thermal and rheological properties of carbon nanotube suspensions Binglu Ruan*1,2 and Anthony M Jacobi1 Mechanical Science and Engineering, University of Illinois, Urbana,...

Ngày tải lên: 21/06/2014, 17:20