A5027368018- Galaxies: Formation, Evolution, Phenomena
- Stellar, planetary, and galactic studies
- Astronomy and Astrophysical Research
- Photodynamic Therapy Research Studies
- Astrophysical Phenomena and Observations
- Astrophysics and Star Formation Studies
- Photoacoustic and Ultrasonic Imaging
- Gold and Silver Nanoparticles Synthesis and Applications
- Radiomics and Machine Learning in Medical Imaging
- Helicobacter pylori-related gastroenterology studies
- Medical Imaging Techniques and Applications
- Nanoplatforms for cancer theranostics
- Lung Cancer Diagnosis and Treatment
- Advanced Radiotherapy Techniques
- Spectroscopy Techniques in Biomedical and Chemical Research
- Radiation Therapy and Dosimetry
- Bee Products Chemical Analysis
- Phytochemicals and Antioxidant Activities
- Laser Applications in Dentistry and Medicine
- Tendon Structure and Treatment
- COVID-19 diagnosis using AI
- Gamma-ray bursts and supernovae
- Eosinophilic Esophagitis
- Conservation Techniques and Studies
- Biosensors and Analytical Detection
University of Florence
2014-2024
We show that the mass-metallicity relation observed in local universe is due to a more general between stellar mass M*, gas-phase metallicity and SFR. Local galaxies define tight surface this 3D space, Fundamental Metallicity Relation (FMR), with small residual dispersion of ~0.05 dex metallicity, i.e, ~12%. At low mass, decreases sharply increasing SFR, while at high does not depend on High redshift galaxies, up z~2.5 are found follow same FMR defined by SDSS no indication evolution. The...
We present the first results of a project, LSD, aimed at obtaining spatially-resolved, near-infrared spectroscopy complete sample Lyman-Break Galaxies z~3. Deep observations with adaptive optics resulted in detection main optical lines, such as [OII], Hbeta and [OIII], which are used to study sizes, SFRs, morphologies, gas-phase metallicities, gas fractions effective yields. Optical, near-IR Spitzer/IRAC photometry is measure stellar mass. obtain that morphologies usually complex, presence...
We present a SINFONI integral field kinematical study of 33 galaxies at z~3 from the AMAZE and LSD projects which are aimed studying metallicity dynamics high-redshift galaxies. The number analyzed in this paper constitutes significant improvement compared to existing data literature is first time that dynamical analysis obtained for relatively large sample z~3. 11 show ordered rotational motions (~30% sample), these cases we estimate masses by modeling gas kinematics with rotating disks...
The interest for gold nanorods in biomedical optics is driven by their intense absorbance of near infrared light, biocompatibility and potential to reach tumors after systemic administration. Examples applications include the photoacoustic imaging photothermal ablation cancer. In spite great current efforts, selective delivery through bloodstream remains a formidable challenge. Their bio-conjugation with targeting units, particular antibodies, perceived as hopeful solution, but complexity...
Voltammetry of Microparticles (VMP) is a solid-state electrochemical technique that has proven to be helpful in the examination cultural heritage metallic objects. Herein, VMP procedure was firstly applied characterization standard bronze corrosion products, such as tenorite (CuO), cuprite (Cu2O) and gerhardtite (Cu2(NO3)(OH)3), among others. Once library fingerprints had been created, surface materials Warrior with Shield by Henry Moore. Principal component analysis used order discriminate...
Galaxy dynamical masses are important physical quantities to constrain galaxy evolutionary models, especially at high redshifts. However, z~2 the limited signal noise ratio and spatial resolution of data usually do not allow spatially resolved kinematical modeling very often only virial can be estimated from line widths. But even such estimates require a good knowledge size, which may smaller than resolution. Spectroastrometry is technique combines spectral probe scales significantly...
We measure the black hole mass in nearby active galaxy Centaurus A (NGC 5128) using a new method based on spectroastrometry of rotating gas disk. The spectroastrometric approach consists measuring photocenter position emission lines for different velocity channels. In previous paper we focused basic methodology and advantages with detailed set simulations demonstrating possibilities measurements going below conventional spatial resolution. this apply to multiple longslit integral field near...
We present new CRIRES spectroscopic observations of BrGamma in the nuclear region Circinus galaxy, obtained with aim measuring black hole (BH) mass spectroastrometric technique. The galaxy is an ideal benchmark for technique given its proximity and secure BH measurement observation H2O maser disk. kinematical data have been analyzed both classical method based on analysis rotation curves developed by us spectroastrometry. indicates that gas disk rotates gravitational potential extended...
This is the first in a series of papers which we study application spectroastrometry context gas kinematical studies aimed at measuring mass supermassive black holes. The spectroastrometrical method consists photocenter light emission different wavelength or velocity channels. In particular explore potential lines galaxy nuclei to constrain kinematics rotating disks and measure putative By means detailed simulations test cases, show that fundamental advantage it can provide information on...
Aim: The objective of this study was to investigate the possible synergy between doxycycline and photodynamic therapy against Helicobacter pylori evaluate side effects on adenocarcinoma gastric cells with without protoporphyrin IX. Materials & methods: Three H. strains (ATCC 700392, 43504 49503) were grown solid medium either with, or without, at subinhibitory concentrations, irradiated for 10, 20 30 minutes a 400 nm-peaked light source. phototoxicity tests AGS evaluated by MTT assay....
Pâté is a by-product of olive oil production which represents an abundant source phenolic compounds and can be used for food formulation, reducing its environmental impact promoting circular economy. In this context, the effects hydroalcoholic extract pâté were evaluated first time in AGS human cell line commonly as model gastric mucosa. was obtained from Tuscan olives; total content 16.6 mg/g dried extract, with verbascoside secoiridoid derivatives most phenols. The did not alter viability,...
The effects of the phenolic compounds extra virgin olive oil (EVOO) on AGS cells have never been studied so far, which is aim this study. profiles main components in EVOOs, mainly secoiridoid derived from transformation oleuropein during milling process, were evaluated and compared. Oils different origins aiming at verifying whether chemical differences composition dry extracts played a role metabolism maintaining cellular redox state cells. following key enzymes some metabolic pathways...
Helicobacter pylori gastric infections are among the most diffused worldwide, suffering from a rising rate of antibiotic resistance. In this context, some authors have previously designed an ingestible device in form luminous capsule to perform antibacterial photodynamic inactivation stomach. study, light-emitting capsules were tested verify safety use prior clinical efficacy studies. First, laboratory tests measured temperature while function and verified its chemical resistance conditions...
Spartium junceum L. is a typical species of Mediterranean shrubland areas, also grown in gardens and parks as an ornamental. In recent years Europe, S. has been recurrently found to be infected by different subspecies genotypes the quarantine regulated bacterium Xylella fastidiosa (Xf). This work presents for first time anatomy plants that we found, means genetic immunochemistry analysis, naturally Xf subsp. multiplex ST87 (XfmST87) Monte Argentario (Grosseto, Tuscany, Italy), new outbreak...
Introduction: Laser therapy is widely used in the management of tendon diseases and injuries, being effective reducing pain promoting tissue repair.However, laser transmission properties different biological tissues are not completely known.Our aims were: 1) define a method to model measure penetration depth (PD), fundamental optical parameter describing tissues; 2) verify whether PD depends on type.Methods: Ex-vivo specimens (horse) were collected from superficial flexor (SDFT) suspensory...
We present a darkfield optical microspectroscopy technique devoted to the disentangled measurement of absorption and scattering cross sections nanoparticle (NP) samples with variable concentration. The robustness method, including needed instrumental calibrations, is examined in detail by analyzing quantifying major sources statistic systematic errors. As an exemplary case, results are presented on gold NP colloid. takes advantage simple inverted microscope, coupled spectrograph equipped...