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Hydrodynamic time-correlation functions of a Heisenberg ferrofluid

Mryglod, I.; Folk, R.; Dubyk, S.; Rudavskii, Yu. - In: Physica A: Statistical Mechanics and its Applications 277 (2000) 3, pp. 389-404

Using our previous results [Physica A 220 (1995) 325 and A 234 (1996) 129], where the generalized transport equations for a Heisenberg-like model of a ferrofluid were obtained and the hydrodynamic collective mode spectrum has been studied, we derive the analytical expressions for hydrodynamic...

Persistent link: https://www.econbiz.de/10011058724

SYNTHESIS AND CHARACTERIZATION OF α-Fe2O3@ATO NANOCOMPOSITE PARTICLES

ZHU, YIN-CUN; JIANG, JI-SEN - In: Surface Review and Letters (SRL) 15 (2008) 05, pp. 545-550

(weight ratio) = 70%, n(Sb)/n(Sn) = 10%, calcined at 700°C for 1 h were optimal for the conductivity of the nanocomposite. …

Persistent link: https://www.econbiz.de/10005050539

DC CONDUCTION MECHANISMS IN Al–SnO2–Al STRUCTURE DEPOSITED BY THERMAL EVAPORATION

ANWAR, M.; GHAURI, I. M.; SIDDIQI, S. A.; AFZAL, NAVEED - In: Surface Review and Letters (SRL) 15 (2008) 03, pp. 207-216

increase in electrical conductivity with film thickness is caused by the oxygen vacancies and ${\rm SnO}_{2-x}({\rm V …}_{\rm \ddot{O}})_{x}\, {\rm e}_{2x}^\prime$ defects which generate carriers in the films. The increase in electrical conductivity … ionized oxygen vacancies are thought to be responsible for the increase in electrical conductivity at higher annealing …

Persistent link: https://www.econbiz.de/10005050595

Monitoring the Influence of Chemical Composition of Electrical and Dielectric Properties of Special Glasses

Jozef, Psota; BoÅ¡Ã¡k Ondrej; LabaÅ¡ VladimÃr; … - In: Research Papers Faculty of Materials Science and … 19 (2011) 30, pp. 9-15

The paper deals with the results of experimentally determined influence of the chemical composition change of pure Ge-Se-Te glasses systems with the rare earths elements additions (Pr, Er and Ho in oxide or pure metal form) on electrical and dielectric properties of the glasses. We used...

Persistent link: https://www.econbiz.de/10010534202

Energy Renovation of Buildings Utilizing the U-value Meter, a New Heat Loss Measuring Device

Sørensen, Lars Schiøtt - In: Sustainability 2 (2010) 2, pp. 461-474

A new device with the ability to measure heat loss from building facades is proposed. Yet to be commercially developed, the U-value Meter can be used as stand-alone apparatus, or in combination with thermographic-equipment. The U-value meter complements thermographs, which only reproduce surface...

Persistent link: https://www.econbiz.de/10008683217

STUDY OF ELECTRICAL CONDUCTIVITY FOR COPPER NANOPARTICLES WITH VAPOR-DEPOSITED SAMs

LEE, GYE-YOUNG; SEONG, MI-RYN; KWON, JINHYEONG; KIM, … - In: Surface Review and Letters (SRL) 16 (2009) 04, pp. 519-523

A self-assembled monolayer (SAM) of octanethiol was vapor-deposited onto the surface of copper (Cu) nanoparticles as a means of preventing oxidation. The presence of octanethiol on the surface of Cu nanoparticles was verified using Fourier transform infrared spectroscopy and transmission...

Persistent link: https://www.econbiz.de/10008481947

A transport theory contribution to the understanding of conductivity in metals

Mostacci, D.; Molinari, V.; Giusti, D.; Maritato, L. - In: Physica A: Statistical Mechanics and its Applications 291 (2001) 1, pp. 345-361

In the transport of conduction electrons different types of scattering interaction can be recognized, with cross-sections that behave differently and give rise to collision frequencies that, in turn, depend on electron momentum with different laws. A few of such diverse collision frequencies are...

Persistent link: https://www.econbiz.de/10010589472

Effective scalar properties of the critical region in functionally graded materials

Van Siclen, C.D - In: Physica A: Statistical Mechanics and its Applications 322 (2003) C, pp. 5-12

The critical region in a compositionally graded material occurs where the dominant phase ceases to percolate, and so is poorly treated by effective medium theories. To address this problem, equations for the size and effective scalar properties of that region are obtained from percolation theory.

Persistent link: https://www.econbiz.de/10010589938

Surface dynamics and breakdown patterns of a random solid subject to a biased 3D etching

Reverberi, A.P.; Maga, L.; Barbucci, A.; Bruzzone, A.G. - In: Physica A: Statistical Mechanics and its Applications 388 (2009) 1, pp. 51-58

, we analyse the effects of the etchant particle motion on the topology and conductivity of the residual substrate and we …

Persistent link: https://www.econbiz.de/10010591472

Relationships Between Conductivity and pH in Channels Exposed to Acid Mine Drainage Processes: Study of a Large Mass of Data Using Classical Statistics

Grande, Jose; Jiménez, Antonio; Borrego, José; Torre, … - In: Water Resources Management 24 (2010) 15, pp. 4579-4587

The lack of statistical interdependence relationships between pH and conductivity in channels exposed to Acid Mine …,000 records of pH and conductivity taken in a typical mining channel in the Iberian Pyrite Belt in SW Spain, the present work …

Persistent link: https://www.econbiz.de/10010998180