A5100762193- High-Energy Particle Collisions Research
- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- Particle Detector Development and Performance
- Nuclear reactor physics and engineering
- Nuclear physics research studies
- Radiation Detection and Scintillator Technologies
- Particle accelerators and beam dynamics
- Dark Matter and Cosmic Phenomena
- Nuclear Physics and Applications
- Particle Accelerators and Free-Electron Lasers
- Atomic and Molecular Physics
- Stochastic processes and statistical mechanics
- CCD and CMOS Imaging Sensors
- Photonic and Optical Devices
- Statistical Methods and Bayesian Inference
- Cosmology and Gravitation Theories
- Photonic Crystals and Applications
- X-ray Spectroscopy and Fluorescence Analysis
- Superconducting Materials and Applications
- Multilevel Inverters and Converters
- Vehicle Dynamics and Control Systems
- Advanced DC-DC Converters
- Silicon Carbide Semiconductor Technologies
- Laser-induced spectroscopy and plasma
Universidade Estadual de Campinas (UNICAMP)
2016-2025
A. Alikhanyan National Laboratory
2015-2024
University of Bergen
2015-2024
Mitsubishi Electric (Japan)
2003-2024
University of Pavol Jozef Šafárik
2022-2024
Austrian Academy of Sciences
2023
Central China Normal University
2016-2023
Hitachi (Japan)
1990-2022
Lund University
2017-2022
Technical University of Munich
2021
We reveal experimentally waveguiding characteristics and group-velocity dispersion of line defects in photonic crystal slabs as a function defect widths. The have modes with two types cutoff within the band gap. Interference measurements show that they exhibit extraordinarily large group dispersion, we found whose traveling speed is 2 orders magnitude slower than air. These can be tuned by controlling width, results agree well theoretical calculations, indicating design light paths...
The effects of fluctuating initial conditions are studied in the context relativistic heavy ion collisions where a rapidly evolving system is formed. Two-particle correlation analysis applied to events generated with NEXSPHERIO hydrodynamic code, starting nonsmooth (IC). results show that nonsmoothness IC survives hydroevolution and can be seen as topological features angular function particles emerging from system. A long range observed longitudinal direction azimuthal double peak structure...
Heavy-ion collisions, such as Pb-Pb or p-Pb, produce extreme conditions in temperature and density that make the hadronic matter transition to a new state, called quark-gluon plasma (QGP). Simulations of heavy-ion collisions provide way improve our understanding QGP's properties. These simulations are composed hybrid description results final observables agreement with accelerators like LHC RHIC. However, recent works pointed out these hydrodynamic can display acausal behavior during...
Excitation functions for sub- and near-barrier total (complete + incomplete) fusion cross sections are presented the 6,7Li+59Co reactions. Evaporation residues were identified by their characteristic γ rays corresponding yields measured with both IReS Garel array at Vivitron facility São Paulo Ge 8UD Pelletron tandem using standard γ-ray techniques. The data extend to medium-mass systems previous works exploring coupling effects (hindrance versus enhancement) in reactions of lighter heavier...
Object The authors evaluated the clinical impact of combining functional neuronavigation with subcortical electrical stimulation to preserve motor function following removal brain tumors. Methods Forty patients underwent surgery for treatment tumors located near pyramidal tracts that had been identified by fiber tracking. distances between electrically stimulated white matter and were measured intraoperatively tractography-integrated neuronavigation, correlated evoked potentials (MEPs)...
It is demonstrated experimentally that a single missing-hole line defect photonic crystal waveguide fabricated on silicon-on-insulator substrate can support waveguiding mode within the bandgap if width properly tuned.
We report here that a neutralizing mouse monoclonal antibody against basic FGF inhibited both anchorage‐dependent and anchorage‐independent growth of U‐87MG T98G human glioblastoma cells HeLa cells, all which express the remptor genes. In addition, subcutaneous administration this significantly suppressed tumor development or these in nude mice. Therefore, plays an important role neoplastic cells. The neutralization will be effective controlling tumors, such as other cancer bear receptors.
The purpose of this report was to investigate the potential positron emission tomography using F-18 fluorodeoxythymidine (FLT-PET) in evaluating primary brain tumors.FLT-PET performed 25 patients with tumors. FLT uptake lesion semiquantitatively evaluated by measuring maximal standardized value (SUVmax) and tumor-to-normal tissue ratio (TNR). SUVmax TNR were compared histologic grade expression proliferation marker (Ki-67).FLT normal parenchyma very low, resulting visualization tumors high...
We investigate the effects of pre-hydrodynamic evolution on final-state observables in heavy-ion collisions using state-of-the art event simulations coupled to different scenarios, which include recently-developed effective kinetic transport theory model KoMPoST. Flow are found be insensitive details evolution. The main effect we observe is $p_T$ spectra, particularly mean transverse momentum. However, at least part this a consequence underlying conformal invariance assumption currently...
We performed a systematic study on the formation of vorticity rings as process for jet thermalization in medium created high-energy nuclear collisions. In this work, we expanded our previous analysis to more realistic framework by considering noncentral events and fluctuations initial condition. simulate evolution flow vortex structure relativistic viscous hydrodynamic model sensitivity proposed ``ring observable'' $({\mathcal{R}}_{\mathrm{\ensuremath{\Lambda}}}^{t})$ that can be measured...
Complete fusion of light radioactive nuclei is predicted to be hindered at near-barrier energies. This feature investigated in the case least bound stable nuclei. Evaporation residues resulting from ${}^{6,7}\mathrm{Li}{+}^{9}\mathrm{Be}$ and ${}^{6,7}\mathrm{Li}{+}^{12}\mathrm{C}$ reactions have been measured order study common features involving weakly The experimental excitation functions revealed that cross section significantly smaller than total reaction also expected available...
E896 has measured Lambda production in 11.6A GeV/c Au-Au collisions over virtually the whole rapidity phase space. The midrapidity p(t) distributions have been for first time at this energy and appear to indicate that hyperons different freeze-out conditions than protons. A comparison with relativistic quantum molecular dynamics model shows while there is good shape agreement high predicts significantly slopes of m(t) spectra midrapidity. data, where overlap occurs, are consistent previously...
We examine the formation of vortical "smoke rings" as a result thermalization energy lost by jet. simulate and evolution these rings using hydrodynamics define an observable that allows to probe this phenomenon experimentally. argue observation vorticity associated with jets would be experimental confirmation quenched jets, also shear viscosity.
Relativistic p+A collisions may produce droplets of quark gluon plasma (QGP) that quickly develop a toroidal vortex structure similar to an expanding smoke ring. We present viscous relativistic hydrodynamic calculations ultra-central and experimental observable probe the structure, correlating polarization momentum hyperons emitted from collision. The effect is robust against changes in definition vorticity used calculate polarization. Experiments at RHIC LHC test existence strength toroids,...
We extend our previous investigation of the effects prehydrodynamic evolution on final-state observables in heavy-ion collisions [38] to smaller systems. use a state-of-the-art hybrid model for numerical simulations with optimal parameters obtained from Bayesian study. By studying $p\text{\ensuremath{-}}\mathrm{Pb}$ collisions, we find that due assumption conformal prehydrodynamical stage are even more important small also show this effect depends time duration pre-equilibrium stage, which...
The elastic scattering for the $^{6,7}\mathrm{Li}+^{59}\mathrm{Co}$ systems was investigated in bombarding energy range $12\phantom{\rule{0.3em}{0ex}}\text{MeV}\ensuremath{\leqslant}{E}_{\mathrm{lab}}\ensuremath{\leqslant}30\phantom{\rule{0.3em}{0ex}}\text{MeV}$ by means of an analysis using S\~ao Paulo potential, through which behavior real and imaginary parts as function established. experimental results suggest that overall there is evidence usual threshold anomaly both systems, although...
An outstanding problem in heavy-ion collisions is the inability for models to accurately describe ultracentral experimental flow data, despite that being precisely regime where a hydrodynamic description should be most applicable. We reassess status of this puzzle by computing obtained from multiple recent Bayesian were tuned various observables different collision systems at typical centralities. While central data can now described with better accuracy than previous calculations, tension...
Long duration phosphorescent SrAl2O4 phosphors doped with various auxiliary activators (Y, La, Ce, Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu) have been evaluated for the fiber-optic thermometer application. In this thermometer, temperature was measured based on dependence of lifetime and/or intensity afterglow phosphorescence which dominated by thermal excitation trapped carriers. Characteristics long are quite different from those conventional using fluorescent phosphors. Lifetime...
A multiple PWM GTO line-side converter with low switching frequency has been developed for industrial uses needing both higher capacity and performance. The is composed of two units connected in parallel through an interphase reactor. the thyristors can be reduced to a quarter that single converter. It verified by simulations experiments 2750 kVA inverter system 500 Hz has: (1) unity power factor, (2) harmonics, (3) bidirectional flow, (4) speed regulatory performance equal advanced...
A fiber-optic thermometer is developed based on the temperature dependence of afterglow phosphorescence intensity which dominated by thermal excitation trapped carriers using long duration phosphor, The from phosphorescent sensor head increases greatly and linearly with ranging 270 to 320 K coefficient 1.3 % K−1. materials are potentially useful phosphors for sensitive in thermometers. © 2002 Electrochemical Society. All rights reserved.
In heavy-ion collisions, momentum-dependent pair correlations can be characterized by a principal component analysis (PCA), in which subleading modes are expected to reveal new information on flow fluctuations. However, we find that, as currently measured, these dominated multiplicity fluctuations, serve an unwanted background. Here, propose PCA observables that robust against fluctuations and isolate novel sources of thus being suited provide fresh insight into the initial stages system at...
By analyzing the dynamical properties of particle production in relativistic heavy ion collisions, it is possible to characterize final stage equilibration process occurring collision fireball. In this work, we use Hagedorn model coupled with non-extensive statistics evaluate transverse momentum spectra positive pions for various event centrality classes Au+Au collisions at RHIC center-of-mass energies 62.4 and 200 . We find that, by assuming an energy distribution that incorporates...