Search results for "PICO"

Ultrafast Optical Demagnetization manipulates Nanoscale Spin Structure in Domain Walls

2012

During ultrafast demagnetization of a magnetically ordered solid, angular momentum has to be transferred between the spins, electrons, and phonons in the system on femto- and picosecond timescales. Although the intrinsic spin-transfer mechanisms are intensely debated, additional extrinsic mechanisms arising due to nanoscale heterogeneity have only recently entered the discussion. Here we use femtosecond X-ray pulses from a free-electron laser to study thin film samples with magnetic domain patterns. We observe an infrared-pump-induced change of the spin structure within the domain walls on the sub-picosecond timescale. This domain-topography-dependent contribution connects the intrinsic dem…

En recuerdo de Vidal-Beneyto

2010

Designing dicyanamide bridged 1D molecular architecture from a mononuclear copper(II) Schiff base precursor: Syntheses, structural variations and mag…

2009

International audience; A new tridentate N2O donor Schiff base ligand [(C6H5C(OH)CHC(CH3)NCH2C5H4N)LH] was obtained by 1:1 condensation of benzoylacetone with 2-picolylamine and has been used to synthesise a mononuclear [CuLCl] (1) and an end-to-end dicyanamide bridged polynuclear {[Cu2(μ-L)2(μ2-1,5-(CN)2N)]ClO4}n (2) copper(II) complexes. The ligand, 1 and 2 were clearly characterised by elemental analysis, FT-IR, 1H NMR, UV–Vis spectral studies, electrochemical studies and in addition single crystal X-ray diffraction studies were performed for 1 and 2. The Schiff base ligand [LH] shows a significant variation in its coordination behaviour with copper(II) ion in absence and in presence of …

Audiovisual constructs of Paralympic Games : scalarity and camera angle

2014

This research will analyze the variables differentiating between the audiovisual television of the XIII edition of the Paralympic Games and the Games of the XXIX Olympiad, held in Beijing from the 7th of September to the 17th, 2008. This study will serve as a methodological basis for similar future research. By means of a qualitative and quantitative methodology, this study also focuses on determining if TV representations of Paralympic sportspersons favour their social integration or if, on the contrary, lead to higher stigmatization.

Identification of picobirnavirus from faeces of Italian children suffering from acute diarrhea

1996

Polyacrylamide gel electrophoresis of nucleic acid extracted from stool samples of diarrhoeic children revealed in 3 out of 690 (0.43 %) specimens two electrophoretic bands with a migration pattern characteristic of picobirnavirus ds-RNA. In none of the 92 control children were similar bands detected. No other potential enteric pathogens were found in the patients with picobirnavirus infection.

Spatiotemporal reaction kinetics of an ultrafast photoreaction pathway visualized by time-resolved liquid x-ray diffraction.

2006

We have studied the reaction dynamics for HgI 2 in methanol by using time-resolved x-ray diffraction (TRXD). Although numerous time-resolved spectroscopic studies have provided ample information about the early dynamics of HgI 2 , a comprehensive reaction mechanism in the solution phase spanning from picoseconds up to microseconds has been lacking. Here we show that TRXD can provide this information directly and quantitatively. Picosecond optical pulses triggered the dissociation of HgI 2 , and 100-ps-long x-ray pulses from a synchrotron probed the evolving structures over a wide temporal range. To theoretically explain the diffracted intensities, the structural signal from the solute, the…

“Extracorporeal shock wave therapy for lateral epicondylitis—a double blind randomized controlled trial” by C. A. Speed et al., J Orthop Res 2002;20:…

2003

Cambios en la activación electromiográfica de la musculatura de codo en sujetos sanos comparada con la activación muscular en sujetos con tendinopatí…

2021

La tendinopatía es uno de los problemas de tendón más frecuente de lesión en la actualidad. En el caso de miembros superiores, la alteración en los tendones es bastante significativa tanto en deportistas como en personas que no practican deporte. Sin embargo, hay pocos estudios que reflejen cómo repercute esto en las personas que lo padecen. Objetivos: el objetivo de este estudio es examinar y comparar la actividad electromiografia, la fuerza y la calidad de vida en personas con alteración tendinosa epicondílea del músculo extensor corto de carpo entre personas sanas, además de comprobar el efecto de la punción seca como rama de tratamiento en la actividad muscular, fuerza y dolor. Material…

Studio videocapillaroscopico del microcircolo orale in pazienti ex-fumatori.

2011

A European multicentre evaluation of detection and typing methods for human enteroviruses and parechoviruses using RNA transcripts

2020

Polymerase chain reaction (PCR) detection has become the gold standard for diagnosis and typing of enterovirus (EV) and human parechovirus (HPeV) infections. Its effectiveness depends critically on using the appropriate sample types and high assay sensitivity as viral loads in cerebrospinal fluid samples from meningitis and sepsis clinical presentation can be extremely low. This study evaluated the sensitivity and specificity of currently used commercial and in‐house diagnostic and typing assays. Accurately quantified RNA transcript controls were distributed to 27 diagnostic and 12 reference laboratories in 17 European countries for blinded testing. Transcripts represented the four human EV…