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Showing 1 to 12 of 225 entries
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Coherent structural dynamics of a prototypical charge-density-wave-to-metal transition.

Physical review letters

Huber T, Mariager SO, Ferrer A, Schäfer H, Johnson JA, Grübel S, Lübcke A, Huber L, Kubacka T, Dornes C, Laulhe C, Ravy S, Ingold G, Beaud P, Demsar J, Johnson SL.
PMID: 25062214
Phys Rev Lett. 2014 Jul 11;113(2):026401. doi: 10.1103/PhysRevLett.113.026401. Epub 2014 Jul 11.

Using femtosecond time-resolved x-ray diffraction, we directly monitor the coherent lattice dynamics through an ultrafast charge-density-wave-to-metal transition in the prototypical Peierls system K(0.3)MoO(3) over a wide range of relevant excitation fluences. While in the low fluence regime we directly...

Cutaneous leishmaniasis in French Guiana: revising epidemiology with PCR-RFLP.

Tropical medicine and health

Simon S, Nacher M, Carme B, Basurko C, Roger A, Adenis A, Ginouves M, Demar M, Couppie P.
PMID: 28265182
Trop Med Health. 2017 Feb 28;45:5. doi: 10.1186/s41182-017-0045-x. eCollection 2017.

BACKGROUND: The development of polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) technique for species identification among patients presenting leishmaniasis allowed to better determine the main circulating species in French Guiana.METHODS: A descriptive study of the RESULTS: The average proportions...

Multisystem involvement in neuromyelitis optica.

Annals of Indian Academy of Neurology

Langille MM, Desai J.
PMID: 26538850
Ann Indian Acad Neurol. 2015 Sep;18:S56-8. doi: 10.4103/0972-2327.164830.

We describe a case of pediatric neuromyelitis optica (NMO) with muscle and lung involvement in addition to central nervous system disease. Our patient initially presented with features of area postrema syndrome, then subsequently with optic neuritis. The patient also...

Sensing with optical vortices in photonic-crystal fibers.

Optics letters

Demas J, Grogan MD, Alkeskjold T, Ramachandran S.
PMID: 23041853
Opt Lett. 2012 Sep 15;37(18):3768-70. doi: 10.1364/ol.37.003768.

We demonstrate optical polarization vortex generation in a photonic-crystal fiber (PCF) by means of a CO(2) laser-induced long period grating. Vortices are a special subclass of fiber modes that result in polarization-insensitive resonances even when grating perturbations are asymmetric,...

Impact of Diabetes Status and Medication on Presentation, Treatment, and Outcome of Stage II Colon Cancer Patients.

Journal of cancer epidemiology

Bae S, Wong HL, Tie J, Desai J, Field K, Kosmider S, Fourlanos S, Jones I, Skinner I, Gibbs P.
PMID: 26074965
J Cancer Epidemiol. 2015;2015:189132. doi: 10.1155/2015/189132. Epub 2015 May 05.

Diabetes is a risk factor for colorectal cancer and several reports suggest worse cancer-specific outcomes in diabetes patients. Recent studies in multiple tumour types indicate metformin may positively impact on cancer-specific and overall survival. A population-based series of stage...

Collective Modes and Structural Modulation in Ni-Mn-Ga(Co) Martensite Thin Films Probed by Femtosecond Spectroscopy and Scanning Tunneling Microscopy.

Physical review letters

Schubert M, Schaefer H, Mayer J, Laptev A, Hettich M, Merklein M, He C, Rummel C, Ristow O, Großmann M, Luo Y, Gusev V, Samwer K, Fonin M, Dekorsy T, Demsar J.
PMID: 26317735
Phys Rev Lett. 2015 Aug 14;115(7):076402. doi: 10.1103/PhysRevLett.115.076402. Epub 2015 Aug 13.

The origin of the martensitic transition in the magnetic shape memory alloy Ni-Mn-Ga has been widely discussed. While several studies suggest it is electronically driven, the adaptive martensite model reproduced the peculiar nonharmonic lattice modulation. We used femtosecond spectroscopy...

Patterns of care for patients with advanced soft tissue sarcoma: experience from Australian sarcoma services.

Clinical sarcoma research

Bae S, Crowe P, Gowda R, Joubert W, Carey-Smith R, Stalley P, Desai J.
PMID: 27403280
Clin Sarcoma Res. 2016 Jul 11;6:11. doi: 10.1186/s13569-016-0052-4. eCollection 2016.

BACKGROUND: There is a paucity of data on the current management of patients with advanced soft tissue sarcoma (STS) in the Australian health care setting. This study utilised the Australian sarcoma database to evaluate the patterns of care delivered...

Self-assembly of subnanometer-diameter single-wall MoS2 nanotubes.

Science (New York, N.Y.)

Remskar M, Mrzel A, Skraba Z, Jesih A, Ceh M, Demsar J, Stadelmann P, Levy F, Mihailovic D.
PMID: 11313488
Science. 2001 Apr 20;292(5516):479-81. doi: 10.1126/science.1059011.

We report on the synthesis, structure, and self-assembly of single-wall subnanometer-diameter molybdenum disulfide tubes. The nanotubes are up to hundreds of micrometers long and display diverse self-assembly properties on different length scales, ranging from twisted bundles to regularly shaped...

First Mixed Fluoro-Chloro Group 4 Organometallics: Synthesis and Spectroscopic and Structural Characterization of [{(C(5)Me(5))ZrF(2)Cl}(4)], [{(C(5)Me(5))HfF(2)Cl}(4)], [(C(5)Me(5))(4)Zr(4)(&mgr;-F)(2)(&mgr;-F(2))(2)(&mgr;-Cl)(2)Cl(4)], [(C(5)Me(5))(4)Hf(4)(&mgr;-F)(2)(&mgr;-F(2))(2)(&mgr;-Cl)(2)Cl(4)], [(C(5)Me(4)Et)(2)ZrClF], and [(C(5)Me(5))(2)HfClF].

Inorganic chemistry

Murphy EF, Lübben T, Herzog A, Roesky HW, Demsar A, Noltemeyer M, Schmidt HG.
PMID: 11666158
Inorg Chem. 1996 Jan 03;35(1):23-29. doi: 10.1021/ic950822a.

Tetrameric [{(C(5)Me(5))MF(3)}(4)] (M = Zr, Hf) react smoothly with Me(3)SiCl in CH(2)Cl(2) at room temperature to give [{(C(5)Me(5))ZrF(2)Cl}(4)] (1) and [{(C(5)Me(5))HfF(2)Cl}(4)] (2), respectively, in high yield. Treatment of [{(C(5)Me(5))MF(3)}(4)] (M = Zr, Hf) with Me(2)AlCl in toluene gives mixtures...

Decorrelation of cerebral visual inputs as the sufficient cause of infantile esotropia.

The American orthoptic journal

Tychsen L, Richards M, Wong AM, Demer J, Bradley D, Burkhalter A, Foeller P.
PMID: 21149178
Am Orthopt J. 2008;58:60-9. doi: 10.3368/aoj.58.1.60.

BACKGROUND AND PURPOSE: Human infants at greatest risk for esotropia are those who suffer cerebral insults that could decorrelate signals from the two eyes during an early critical period of binocular, visuomotor development. The authors reared normal infant monkeys...

Snapshots of cooperative atomic motions in the optical suppression of charge density waves.

Nature

Eichberger M, Schäfer H, Krumova M, Beyer M, Demsar J, Berger H, Moriena G, Sciaini G, Miller RJ.
PMID: 21107321
Nature. 2010 Dec 09;468(7325):799-802. doi: 10.1038/nature09539. Epub 2010 Nov 24.

Macroscopic quantum phenomena such as high-temperature superconductivity, colossal magnetoresistance, ferrimagnetism and ferromagnetism arise from a delicate balance of different interactions among electrons, phonons and spins on the nanoscale. The study of the interplay among these various degrees of freedom...

Ultrafast transient generation of spin-density-wave order in the normal state of BaFe2As2 driven by coherent lattice vibrations.

Nature materials

Kim KW, Pashkin A, Schäfer H, Beyer M, Porer M, Wolf T, Bernhard C, Demsar J, Huber R, Leitenstorfer A.
PMID: 22484832
Nat Mater. 2012 Apr 08;11(6):497-501. doi: 10.1038/nmat3294.

The interplay among charge, spin and lattice degrees of freedom in solids gives rise to intriguing macroscopic quantum phenomena such as colossal magnetoresistance, multiferroicity and high-temperature superconductivity. Strong coupling or competition between various orders in these systems presents the...

Showing 1 to 12 of 225 entries