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Showing 1 to 12 of 240 entries
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Dynamics and Structure of Bitumen-Water Mixtures.

The journal of physical chemistry. B

Lemarchand CA, Greenfield ML, Hansen JS.
PMID: 27248331
J Phys Chem B. 2016 Jun 23;120(24):5470-80. doi: 10.1021/acs.jpcb.6b01451. Epub 2016 Jun 09.

Systems of Cooee bitumen and water up to 4% mass are studied by molecular dynamics simulations. The cohesive energy density of the system is shown to decrease with an increasing water content. This decrease is due mainly to an...

Erratum to: ADAMTS-4 promotes neurodegeneration in a mouse model of amyotrophic lateral sclerosis.

Molecular neurodegeneration

Lemarchant S, Pomeshchik Y, Kidin I, Kärkkäinen V, Valonen P, Lehtonen S, Goldsteins G, Malm T, Kanninen K, Koistinaho J.
PMID: 26858022
Mol Neurodegener. 2016 Feb 08;11:15. doi: 10.1186/s13024-016-0080-9.

No abstract available.

Minimum size for a nanoscale temperature discriminator based on a thermochemical system.

Physical chemistry chemical physics : PCCP

Gorecki J, Nowakowski B, Gorecka JN, Lemarchand A.
PMID: 26807977
Phys Chem Chem Phys. 2016 Feb 14;18(6):4952-60. doi: 10.1039/c5cp07347b.

What are the limits of size reduction for information processing devices based on chemical reactions? In this paper, we partially answer this question. We show that a thermochemical system can be used to design a discriminator of the parameters...

Piezoelectric tantalum pentoxide studied for optical tunable applications.

Applied optics

Parmentier R, Lemarchand F, Cathelinaud M, Lequime M, Amra C, Labat S, Bozzo S, Bocquet F, Charaï A, Thomas O, Dominici C.
PMID: 12064412
Appl Opt. 2002 Jun 01;41(16):3270-6. doi: 10.1364/ao.41.003270.

Piezoelectric transparent thin films are of great interest for use in tunable filters. We present experimental results on Ta2O5 single layers coated on fused-silica substrates with an electron-beam deposition process. Above 450 degrees C, coatings change from an amorphous...

Stochastic effects in a thermochemical system with Newtonian heat exchange.

Physical review. E, Statistical, nonlinear, and soft matter physics

Nowakowski B, Lemarchand A.
PMID: 11736172
Phys Rev E Stat Nonlin Soft Matter Phys. 2001 Dec;64(6):061108. doi: 10.1103/PhysRevE.64.061108. Epub 2001 Nov 27.

We develop a mesoscopic description of stochastic effects in the Newtonian heat exchange between a diluted gas system and a thermostat. We explicitly study the homogeneous Semenov model involving a thermochemical reaction and neglecting consumption of reactants. The master...

Influence of structural parameters on magnetoresistive properties of CuFeNi melt spun ribbons.

Ultramicroscopy

Cazottes S, Danoix F, Fnidiki A, Lemarchand D, Baricco M.
PMID: 19168287
Ultramicroscopy. 2009 Apr;109(5):625-30. doi: 10.1016/j.ultramic.2008.12.004. Epub 2008 Dec 11.

The microstructure of Cu(80)Fe(10)Ni(10) (at%) granular ribbon was investigated by means of atom probe tomography (APT). A granular system is composed of magnetic precipitates embedded in a non-magnetic matrix. In this ribbon, the magnetic precipitates have a diameter smaller...

Experimental demonstration of a narrowband, angular tolerant, polarization independent, doubly periodic resonant grating filter.

Optics letters

Fehrembach AL, Talneau A, Boyko O, Lemarchand F, Sentenac A.
PMID: 17671606
Opt Lett. 2007 Aug 01;32(15):2269-71. doi: 10.1364/ol.32.002269.

Resonant grating filters are promising components for free-space narrowband filtering. Unfortunately, due to their weak angular tolerance, their performances are strongly deteriorated when they are illuminated with a standard collimated beam. Yet this problem can be overcome by resorting...

Heterocyclic amines content of meat and fish cooked by Brazilian methods.

Journal of food composition and analysis : an official publication of the United Nations University, International Network of Food Data Systems

Iwasaki M, Kataoka H, Ishihara J, Takachi R, Hamada GS, Sharma S, Le Marchand L, Tsugane S.
PMID: 20383312
J Food Compost Anal. 2010 Feb 01;23(1):61-69. doi: 10.1016/j.jfca.2009.07.004.

Heterocyclic amine (HCA) concentrations were measured in meat and fish samples cooked by pan-frying, grilling and churrasco (Brazilian barbecue) to various levels of doneness in accordance with the cooking methods most commonly used in Brazil. HCAs were extracted by...

Response to a temperature modulation as a signature of chemical mechanisms.

Physical review. E, Statistical, nonlinear, and soft matter physics

Berthoumieux H, Jullien L, Lemarchand A.
PMID: 18233723
Phys Rev E Stat Nonlin Soft Matter Phys. 2007 Nov;76(5):056112. doi: 10.1103/PhysRevE.76.056112. Epub 2007 Nov 15.

We consider n reactive species involved in unimolecular reactions and submitted to a temperature modulation of small amplitude. We determine the conditions on the rate constants for which the deviations from the equilibrium concentrations of each species can be...

Tunable double-cavity solid-spaced bandpass filter.

Optics express

Floriot J, Lemarchand F, Lequime M.
PMID: 19488275
Opt Express. 2004 Dec 13;12(25):6289-98. doi: 10.1364/opex.12.006289.

In this paper, we introduce the principle and demonstrate the feasibility of a tunable multiple-cavity solid-spaced bandpass filter for WDM (Wavelength Division Multiplexing) applications, which uses a vernier effect since the two cavities have different thermal sensitivities. A set...

Four-component united-atom model of bitumen.

The Journal of chemical physics

Hansen JS, Lemarchand CA, Nielsen E, Dyre JC, Schrøder T.
PMID: 23485314
J Chem Phys. 2013 Mar 07;138(9):094508. doi: 10.1063/1.4792045.

We propose a four-component united-atom molecular model of bitumen. The model includes realistic chemical constituents and introduces a coarse graining level that suppresses the highest frequency modes. Molecular dynamics simulations of the model are carried out using graphic-processor-units based...

Cooee bitumen. II. Stability of linear asphaltene nanoaggregates.

The Journal of chemical physics

Lemarchand CA, Schrøder TB, Dyre JC, Hansen JS.
PMID: 25318723
J Chem Phys. 2014 Oct 14;141(14):144308. doi: 10.1063/1.4897206.

Asphaltene and smaller aromatic molecules tend to form linear nanoaggregates in bitumen. Over the years bitumen undergoes chemical aging and during this process, the size of the nanoaggregate increases. This increase is associated with an increase in viscosity and...

Showing 1 to 12 of 240 entries