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Showing 25 to 36 of 1040 entries
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Enhancing the Charge Separation in Nanocrystalline Cu2ZnSnS4 Photocathodes for Photoelectrochemical Application: The Role of Surface Modifications.

The journal of physical chemistry letters

Guijarro N, Prévot MS, Sivula K.
PMID: 26278767
J Phys Chem Lett. 2014 Nov 06;5(21):3902-8. doi: 10.1021/jz501996s. Epub 2014 Oct 24.

Cu2ZnSnS4 (CZTS) colloidal inks were employed to prepare thin-film photocathodes that served as a model system to interrogate the effect of different surface treatments, viz. CdS, CdSe, and ZnSe buffer layers along with methylviologen (MV) adsorption, on the photoelectrochemical...

Supersymmetric Ruijsenaars-Schneider model.

Physical review letters

Blondeau-Fournier O, Desrosiers P, Mathieu P.
PMID: 25860733
Phys Rev Lett. 2015 Mar 27;114(12):121602. doi: 10.1103/PhysRevLett.114.121602. Epub 2015 Mar 24.

An integrable supersymmetric generalization of the trigonometric Ruijsenaars-Schneider model is presented whose symmetry algebra includes the super Poincaré algebra. Moreover, its Hamiltonian is shown to be diagonalized by the recently introduced Macdonald superpolynomials. Somewhat surprisingly, the consistency of the...

Conformational impact of structural modifications in 2-fluorocyclohexanone.

Beilstein journal of organic chemistry

Martins FA, Silla JM, Freitas MP.
PMID: 28904621
Beilstein J Org Chem. 2017 Aug 24;13:1781-1787. doi: 10.3762/bjoc.13.172. eCollection 2017.

2-Haloketones are building blocks that combine physical, chemical and biological features of materials and bioactive compounds, while organic fluorine plays a fundamental role in the design of performance organic molecules. Since these features are dependent on the three-dimensional chemical...

On the nature of magnetic state in the spinel Co₂SnO₄.

Journal of physics. Condensed matter : an Institute of Physics journal

Thota S, Narang V, Nayak S, Sambasivam S, Choi BC, Sarkar T, Andersson MS, Mathieu R, Seehra MS.
PMID: 25817434
J Phys Condens Matter. 2015 Apr 29;27(16):166001. doi: 10.1088/0953-8984/27/16/166001. Epub 2015 Mar 30.

In the spinel Co2SnO4, coexistence of ferrimagnetic ordering below T(N) ≃ 41 K followed by a spin glass state below T(SG) ≃ 39 K was proposed recently based on the temperature dependence of magnetization M(T) data. Here new measurements...

Size-dependent surface effects in maghemite nanoparticles and its impact on interparticle interactions in dense assemblies.

Nanotechnology

Andersson MS, Mathieu R, Lee SS, Normile PS, Singh G, Nordblad P, Toro JA.
PMID: 26536047
Nanotechnology. 2015 Nov 27;26(47):475703. doi: 10.1088/0957-4484/26/47/475703. Epub 2015 Nov 04.

The question of the dominant interparticle magnetic interaction type in random closely packed assemblies of different diameter (6.2-11.5 nm) bare maghemite nanoparticles (NPs) is addressed. Single-particle magnetic properties such as particle anisotropy and exchange bias field are first of...

Detergent-Mediated Formation of β-Hematin: Heme Crystallization Promoted by Detergents Implicates Nanostructure Formation for Use as a Biological Mimic.

Crystal growth & design

Sandlin RD, Fong KY, Stiebler R, Gulka CP, Nesbitt JE, Oliveira MP, Oliveira MF, Wright DW.
PMID: 27175104
Cryst Growth Des. 2016 May 04;16(5):2542-2551. doi: 10.1021/acs.cgd.5b01580. Epub 2016 Apr 11.

Hemozoin is a unique biomineral that results from the sequestration of toxic free heme liberated as a consequence of hemoglobin degradation in the malaria parasite. Synthetic neutral lipid droplets (SNLDs) and phospholipids were previously shown to support the rapid...

Extrapulmonary tuberculosis in the northeastern suburbs of Paris: 141 cases.

European journal of internal medicine

Fain O, Lortholary O, Lascaux V, Amoura I, Babinet P, Beaudreuil J, Boudon P, Cruaud P, Desrues J, Djouab M, Glowinski J, Lhote F, Kettaneh A, Malbec D, Mathieu E, Taleb C, Guillevin L, Thomas M.
PMID: 10854820
Eur J Intern Med. 2000 Jun;11(3):145-150. doi: 10.1016/s0953-6205(00)00076-5.

Background: Big cities were particularly affected by tuberculosis in the 1990s. Methods: We studied 141 cases of extrapulmonary tuberculosis in patients not infected by HIV in the northeastern suburbs of Paris. Results: A total of 84 men and 57...

Increased pulmonary epithelial permeability in systemic sclerosis is associated with enhanced cutaneous nerve growth factor expression.

European journal of internal medicine

Piga M, Passiu G, Carta P, Satta L, Cherchi V, Pala R, Sanna G, Cauli A, Tuveri MA, Aloe L, Mathieu A.
PMID: 10854822
Eur J Intern Med. 2000 Jun;11(3):156-160. doi: 10.1016/s0953-6205(00)00084-4.

Background: Nerve growth factor (NGF), a neurotrophic factor that indirectly induces fibroblast proliferation and collagen production, has been found to be increased in the affected dermis of patients with systemic sclerosis (SSc). To investigate the possibility of a relationship...

Defect-induced magnetic structure in (Ga(1)-(x)Mn(x))As.

Physical review letters

Korzhavyi PA, Abrikosov IA, Smirnova EA, Bergqvist L, Mohn P, Mathieu R, Svedlindh P, Sadowski J, Isaev EI, Vekilov YKh, Eriksson O.
PMID: 12005716
Phys Rev Lett. 2002 May 06;88(18):187202. doi: 10.1103/PhysRevLett.88.187202. Epub 2002 Apr 18.

We show that magnetic structures involving partial disorder of local magnetic moments on the Mn atoms in (Ga(1)-(x)Mn(x))As lower the total energy, compared to the case of perfect ferromagnetic ordering, when As defects on the Ga sublattice are present....

The reduction of the beam gas interactions in the variable pressure scanning electron microscope with the use of helium gas.

Scanning

Adamiak B, Mathieu C.
PMID: 10888124
Scanning. 2000 May;22(3):178-81. doi: 10.1002/sca.4950220306.

This paper presents experimental observations on electron scattering by gases (helium and air) in the specimen chamber of a variable pressure scanning electron microscope. It shows an important reduction of the beam scattering with the use of helium gas,...

The anomalous Hall effect and magnetic monopoles in momentum space.

Science (New York, N.Y.)

Fang Z, Nagaosa N, Takahashi KS, Asamitsu A, Mathieu R, Ogasawara T, Yamada H, Kawasaki M, Tokura Y, Terakura K.
PMID: 14526076
Science. 2003 Oct 03;302(5642):92-5. doi: 10.1126/science.1089408.

Efforts to find the magnetic monopole in real space have been made in cosmic rays and in particle accelerators, but there has not yet been any firm evidence for its existence because of its very heavy mass, approximately 10(16)...

Electrocatalytic dimerisation of non-heteroatom-substituted manganese alkynylcarbene complexes.

Chemical communications (Cambridge, England)

Ortin Y, Sournia-Saquet A, Lugan N, Mathieu R.
PMID: 12772902
Chem Commun (Camb). 2003 May 07;(9):1060-1. doi: 10.1039/b300623a.

Upon controlled potential electrolysis (-1.30 V vs. SCE), the alkynylcarbene complexes MeCp(CO)2Mn=C(R)C [triple bond]CR' are seen to undergo an electrocatalytic dimerisation by coupling of the remote alkynyl carbon atoms to afford the ene-diyne dimanganese complexes [MeCp(CO)2Mn]2[eta 4-(E)-RC [triple bond]...

Showing 25 to 36 of 1040 entries