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Online since: June 2009
Authors: Pradyot Datta
Furthermore, the electrolyte must retain these properties over a wide range of oxygen partial pressure.
A site selective substitution in a host crystal is governed by the following factors.
Mechanical properties Besides ionic conductivity, chemical stability and thermal expansion, one more important property to be evaluated for practical applications of electrolytes is creep for the following reasons. 1.
Composite anode The material selection for an SOFC anode is determined by a number of factors.
They show excellent properties as interconnects.
Online since: October 2011
Authors: N. Sankar, K. Ramachandran, M. Ragam
Such theoretical investigations were also mostly for bulk systems, as in every model, the atomistic migration, periodicity of the lattice and other properties of bulk materials are considered.
For example Zaluska et al. [10] have reported the atomistic reactions to the nanoscale in a systematic way to enhance the hydrogenation properties of metal hydrides.
The displacement of the diffusing atom is given by (2) M is the host mass, n is the number of atoms in the crystals, is the mass difference factor, is the distribution function for the squared frequencies, and is the Hilbert transform of .
Self diffusion in nano ZnS: In the absence of perturbations such as electric fields, mechanical stresses or chemical potentials, the self diffusion in ZnS can be visualized through simple defects, single vacancy, vacancy-interstitial, neutral defect pair, Frenkel defect pair, substitutional and etc.
Table 1 Modified rigid ion model parameters for nano ZnS Parameters Bulk ZnS Nano ZnS A -4.65 -3.93 B -6.55 -1.19 C1 1.28 0.03 C2 0.40 0.01 D1 -0.50 -0.01 D2 -1.71 -0.05 E1 0.00 0.00 E2 0.00 0.00 F1 -2.04 -0.06 F2 -0.05 -0.01 Z 0.94 0.94 (All parameters except Z are in units of 104 dynes/cm) Green’s Function: When a lattice plane wave is incident on the defect space consisting of the defect and the m neighbours affected by it, then this may be treated as a scattering problem with u1 as the matrix which gives the displacement of the scattered wave and can be expressed as u1 = + W1 (4) Where the matrix corresponds to a perfect lattice.
Online since: February 2024
Authors: Chairul Chairul, Yusnimar Yusnimar, Khairat Khairat, Drastinawati Drastinawati, Syamsu Herman, Suci Ramadhana
Its mechanical and physical properties include a 56% water absorption rate, a tensile strength of 268 MPa, and an elastic modulus of 15 Gpa.
Table 3 Viscosity, brightness and α-cellulose of bleached pulps (dissoving pulps) Materials Bleaching sequences Viscosity (cP) Brightness (% ISOa) α-Cellulose (%) DP of ST ECF; D0–Ep–D1) 9.3 90.1 97.7 DP of ST ECF:Psa–D0–Ep–D1) 8.7 89.8 97.4 DP of EFB ECF; D0–Ep–D1) 10.3 89.2 98.2 DP of EFB ECF:Psa–D0–Ep–D1) 8.5 90.7 98.6 DP of ST TCF;O–Psa–Ep–Psa–E 7.9 88.3 95.9 DP of EFB TCF;O–Psa–Ep–Psa–E 9.6 81.6 95.9 Bleaching conditions: D0 Chlorine dioxide ClO2 dosage: kappa factor 0.30 (2.9 %), 60 min, 70 oC, pH 3.4, PCb: 10 % Psa Peroxymonosulfuric acid Psa dosage: 0.2 %, 60 min, 70 oC, pH 3.0, PC: 10 % Ep Extraction with peroxide NaOH dosage: 1 %, H2O2 dosage: 1.4 %, 60 min, 70 oC, PC: 10 % D1&D2 Chlorine dioxide ClO2 dosage: 0.5 %, 60 min, 70 _C, PC: 10 % O Oxygen Oxygen pressure: 0.5 MPa, NaOH dosage: 1 %, 60 min, 115 oC, PC: 30 % E Extraction NaOH dosage: 1 %, 60 min, 70 oC, PC: 10 % aInternational Organization for Standardization
Conclusions The pre-hydrolysis, soda-AQ cooking, and pulp washing treatments are affected by the kappa number, pulp yield, and DP viscosity.
Varadhan, Impact of wood storage on pulp and paper making properties, IPPTA J. 23 (2011) 161–164
Online since: September 2017
Authors: Krzysztof Jan Kurzydlowski, Tomasz Wejrzanowski
Reduction of grain size in metals usually results in enhancement of mechanical properties [[30]].
For this reasons, thermal stability of the structure (properties) in nanomaterials is decreased.
Unfortunately, little is known about properties of GBs in nanomaterials.
Kurzydlowski, Microstructure of ECAP severely deformed iron and its mechanical properties, Mater.
Wong, Size-dependent melting properties of tin nanoparticles, Chem.
Online since: July 2014
Authors: Mohammad A. Jafar Mazumder, Md. Hasan Zahir, Sharif F. Zaman
The non-viral vectors show advantageous properties in their low immunogenicity, the absence of endogenous virus recombination, low production cost and reproducibility [35].
These unique properties of cationic CDs have been utilized for several therapeutic applications [83].
These intriguing properties allow the PEG coated particles to circulate in the blood for an extended period of time for preferential accumulation in affected areas in the body [127].
The stability of the micelle could also enhance through covalent cross-linking in the shell without affecting the loading capacity in the core [133].
Ulbrich, Polyelectrolyte vectors for gene delivery: influence of cationic polymer on biophysical properties of complexes formed with DNA, Bioconjugate Chem. 10 (1999) 993-1004
Online since: March 2015
Authors: Mikhail Kashchenko, Vera Chashchina
On the one hand, an MT modifies the properties of a material and therefore plays an important practical role (it suffices to mention the process of quenching steels or a shape memory effect in NiTi alloys).
In the approximation of the isotropic elastic properties, the pairs of the wave normals can be matched especially simply with the observed habit planes, since in this case we obviate the need for calculating the parameter æ = 1.
Structure, Phase Transformations, and Properties [in Russian], Publishing House of the Ural Branch of the Russian Academy of Sciences, Ekaterinburg (2006) [20] V. 
Kondrat’ev, Special elastic properties of B2-titanium compounds with unstable lattice, Metallofizika, 10 (1988) 102 - 104 [in Russian]
Kashchenko, The role ofanisotropy factor in selection of B19 martensite nucleation center in Ti-Ni-Cu alloy, Phys.
Online since: July 2013
Authors: Inés Reyero, Gurutze Arzamendi, Luis M. Gandía
These properties are in turn greatly affected by the composition and the way by which the solid has been obtained.
Characterization and physicochemical properties This section aims at presentinga brief description of the most relevant physicochemical properties of HTs, with emphasis on their basic properties which are the ones most influencing their performance as transesterification catalysts.
The preparation method has strong influence on the textural properties.
Basic properties Basic properties are of the outmost importance from the point of view of the catalytic performance of LDHs as transesterification catalysts.
Vaccari, Catalytic properties of hydrotalcite-type anionic clays, in: F.
Online since: December 2013
Authors: Hardev Singh Virk, K.A. Koparkar, Shreeniwas K. Omanwar
TLD Properties 4.1 CaSO4: Dy Phosphor 4.1.1 Thermoluminescence Glow Curve.
However, some experiments indicate that short duration (approximately 12s) heating above 240°C, as in the case during TL readout, can significantly reduce the residual signal without affecting the sensitivity [75].
Slight variation in this can alter the dosimetric properties of the phosphor.
The linearity of the TL response of the phosphor to radiation dose is one of the important properties for a dosimeter.
Ishinoseb, Optical and scintillation properties of LiCaAlF6:Eu crystal, J. of Lumin. 102 (2003) 815-818
Online since: October 2016
Authors: Arush Sharma, Amit Kumar, Zia Mahmood Siddiqi, Gaurav Sharma, Gaurav Sharma
Equilibrium time is the essential factor intended for the treatment of waste water system.
The separation factor RL used to analyze that whether the adsorption is favorable or not.
The rate of sorption strongly affected by various parameters such as state of adsorbent, heterogeneous reactive surface and physico-chemical conditions under which the adsorption carried out.
Sheldon, Coagulation and precipitation of a mechanical pulping effluent-1, Removal of carbon and turbidity, Water Res. 30 (1996) 781–792
Sillanpää, Polyacrylamide@Zr(IV) vanadophosphate nanocomposite: Ion exchange properties, antibacterial activity, and photocatalytic behavior, J.
Online since: January 2022
Authors: Si Meng Zhang
What’s more, Chemical doping of graphene is another method to improve the electrochemical properties of graphene-based electrodes.
Self-discharge is an important factor that impedes supercapacitor to deeper use.
Supercapacitors should also have good mechanical properties, which can effectively resist tension and pressure.
Mechanical Engineering, 139(1), 10–11
Capacitance properties of ordered porous carbonmaterials prepared by a templating procedure.
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