320 results match your criteria: "Complesso Universitario di Monte S Angelo[Affiliation]"

In this paper we analyze the impact of vaccinations on spread of the COVID-19 virus for different age groups. More specifically, we examine the deployment of vaccines in the Nordic countries in a comparative analysis where we focus on factors such as healthcare stress level and severity of disease through new infections, hospitalizations, intensive care unit (ICU) occupancy and deaths. Moreover, we analyze the impact of the various vaccine types, vaccination rate on the spread of the virus in each age group for Denmark, Finland, Iceland, Norway and Sweden from the start of the vaccination period in December 2020 until the end of September 2021.

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A novel experimental approach to characterize neutron fields at high- and low-energy particle accelerators.

Sci Rep

October 2022

Albert Einstein Center for Fundamental Physics (AEC), Laboratory for High Energy Physics (LHEP), University of Bern, Sidlerstrasse 5, 3012, Bern, Switzerland.

Article Synopsis
  • Scientists study neutron fields created by particle accelerators to help protect against radiation and improve devices that measure neutrons.
  • This research looked at two places: CERN in Geneva and a medical lab in Bern, using a special tool called DIAMON that quickly measures neutron energy without guessing.
  • The results showed that DIAMON works really well for different types of neutron fields, which is important for safely shutting down old nuclear facilities and making medical treatments.
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Single cell classification of macrophage subtypes by label-free cell signatures and machine learning.

R Soc Open Sci

September 2022

Interdisciplinary Research Centre on Biomaterials (CRIB) and Dipartimento di Ingegneria Chimica, dei Materiali e della Produzione Industriale, Università degli Studi di Napoli 'Federico II', Piazzale Tecchio 80, Naples 80125, Italy.

Pro-inflammatory (M1) and anti-inflammatory (M2) macrophage phenotypes play a fundamental role in the immune response. The interplay and consequently the classification between these two functional subtypes is significant for many therapeutic applications. Albeit, a fast classification of macrophage phenotypes is challenging.

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Cross-section measurement for an optimized Cu production at an 18 MeV medical cyclotron from natural Zn and enriched Zn solid targets.

Appl Radiat Isot

December 2022

Albert Einstein Center for Fundamental Physics (AEC), Laboratory for High Energy Physics (LHEP), University of Bern, Sidlerstrasse 5, CH-3012 Bern, Switzerland.

The availability of novel medical radionuclides is a key point in the development of personalised nuclear medicine. In particular, copper radioisotopes are attracting considerable interest as they can be used to label various molecules of medical interest, such as proteins and peptides, and offer two of the most promising true theranostic pairs, namely Cu/Cu and Cu/Cu. Although Cu (t = 12.

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The interplay between light absorption and the molecular environment has a central role in the observed photophysics of a wide range of photoinduced chemical and biological phenomena. The understanding of the interplay between vibrational and electronic transitions is the focus of this work, since it can provide a rationale to tune the optical properties of charge transfer (CT) materials used for technological applications. A clear description of these processes poses a nontrivial challenge from both the theoretical and experimental points of view, where the main issue is how to accurately describe and probe drastic changes in the electronic structure and the ultrafast molecular relaxation and dynamics.

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The reduced transition probabilities for the 4_{1}^{+}→2_{1}^{+} and 2_{1}^{+}→0_{1}^{+} transitions in ^{92}Mo and ^{94}Ru and for the 4_{1}^{+}→2_{1}^{+} and 6_{1}^{+}→4_{1}^{+} transitions in ^{90}Zr have been determined in this experiment making use of a multinucleon transfer reaction. These results have been interpreted on the basis of realistic shell-model calculations in the f_{5/2}, p_{3/2}, p_{1/2}, and g_{9/2} proton valence space. Only the combination of extensive lifetime information and large scale shell-model calculations allowed the extent of the seniority conservation in the N=50 g_{9/2} orbital to be understood.

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Article Synopsis
  • - The growing interest in eco-friendly tech is shifting focus from a fossil-based economy to a bioeconomy, with renewable biomasses being recognized for their potential in producing valuable chemicals.
  • - The study emphasizes the importance of finding robust biocatalysts to replace harmful chemical catalysts in this transition, which involves enriching microbial cultures from energy crops.
  • - Researchers discovered over 300 glycoside hydrolases and characterized a new α-glucosidase (Aglu1) from a hyperthermophilic archaeon, showing promise for applications like starch liquefaction and saccharification due to its unique enzymatic properties.
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First post-Newtonian -body problem in Einstein-Cartan theory with the Weyssenhoff fluid: equations of motion.

Eur Phys J C Part Fields

September 2022

Scuola Superiore Meridionale, Largo San Marcellino 10, 80138 Naples, Italy.

We derive the equations of motion for an -body system in the Einstein-Cartan gravity theory at the first post-Newtonian order by exploiting the Weyssenhoff fluid as the spin model. Our approach consists in performing the point-particle limit of the continuous description of the gravitational source. The final equations provide a hint for the validity of the effacing principle at 1PN level in Einstein-Cartan model.

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Sc and Sc cross-section measurement for an optimized Sc production with an 18 MeV medical PET cyclotron.

Appl Radiat Isot

November 2022

Albert Einstein Center for Fundamental Physics (AEC), Laboratory for High Energy Physics (LHEP), University of Bern, Sidlerstrasse 5, CH-3012 Bern, Switzerland.

The availability of novel radionuclides plays a fundamental role in the development of personalized nuclear medicine. In particular, there is growing interest in pairs formed by two radioisotopes of the same element, the so-called true theranostic pairs, such as Cu/Cu, Sc/Sc and Tb/Tb. In this case, the two radionuclides have identical kinetics and chemical reactivity, allowing to predict whether the patient will benefit from a therapeutic treatment on the basis of nuclear imaging data.

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Article Synopsis
  • The study investigates compact binary coalescences with at least one component mass between 0.2 and 1.0 solar masses using data from Advanced LIGO and Advanced Virgo detectors over six months in 2019, but they found no significant gravitational wave candidates.
  • The analysis leads to an upper limit on the merger rate of subsolar binaries ranging from 220 to 24,200 Gpc⁻³ yr⁻¹, based on the detected signals’ false alarm rate.
  • The researchers use these limits to set new constraints on two models for subsolar-mass compact objects: primordial black holes (suggesting they make up less than 6% of dark matter) and
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Proteomic Characterization of Collagen-Based Animal Glues for Restoration.

J Proteome Res

September 2022

Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte S. Angelo, Via Cinthia 21, 80126 Naples, Italy.

Animal glues are widely used in restoration as adhesives, binders, and consolidants for organic and inorganic materials. Their variable performances are intrinsically linked to the adhesive properties of collagen, which determine the chemical, physical, and mechanical properties of the glue. We have molecularly characterized the protein components of a range of homemade and commercial glues using mass spectrometry techniques.

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Gravitational waves at the first post-Newtonian order with the Weyssenhoff fluid in Einstein-Cartan theory.

Eur Phys J C Part Fields

July 2022

Scuola Superiore Meridionale, Largo San Marcellino 10, 80138 Napoli, Italy.

The generation of gravitational waves from a post-Newtonian source endowed with a quantum spin, modeled by the Weyssenhoff fluid, is investigated in the context of Einstein-Cartan theory at the first post-Newtonian level by resorting to the Blanchet-Damour formalism. After having worked out the basic principles of the hydrodynamics in Einstein-Cartan framework, we study the Weyssenhoff fluid within the post-Newtonian approximation scheme. The complexity of the underlying dynamical equations suggests to employ a discrete description via the point-particle limit, a procedure which permits the analysis of inspiralling spinning compact binaries.

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The analytic structure of the fixed charge expansion.

J High Energy Phys

June 2022

Dipartimento di Fisica "E. Pancini", Universita di Napoli Federico II - INFN sezione di Napoli, Complesso Universitario di Monte S. Angelo, Edificio 6, via Cintia, 80126 Napoli, Italy.

We investigate the analytic properties of the fixed charge expansion for a number of conformal field theories in different space-time dimensions. The models investigated here are () and . We show that in = 3 dimensions the contribution to the () fixed charge conformal dimensions obtained in the double scaling limit of large charge and vanishing is non-Borel summable, doubly factorial divergent, and with order optimal truncation order.

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A Two-Dimensional Superconducting Electron Gas in Freestanding LaAlO/SrTiO Micromembranes.

Nano Lett

June 2022

Center for Quantum Devices, Niels Bohr Institute, University of Copenhagen, Universitetsparken 5, 2100 Copenhagen, Denmark.

Freestanding oxide membranes constitute an intriguing material platform for new functionalities and allow integration of oxide electronics with technologically important platforms such as silicon. Sambri et al. recently reported a method to fabricate freestanding LaAlO/SrTiO (LAO/STO) membranes by spalling of strained heterostructures.

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Never before such a vast amount of data, including genome sequencing, has been collected for any viral pandemic than for the current case of COVID-19. This offers the possibility to trace the virus evolution and to assess the role mutations play in its spread within the population, in real time. To this end, we focused on the Spike protein for its central role in mediating viral outbreak and replication in host cells.

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Optimization of Ga production at an 18 MeV medical cyclotron with solid targets by means of cross-section measurement of  Ga, Ga and Ga.

Appl Radiat Isot

August 2022

Albert Einstein Center for Fundamental Physics (AEC), Laboratory for High Energy Physics (LHEP), University of Bern, Sidlerstrasse 5, CH-3012 Bern, Switzerland.

The future development of personalized nuclear medicine relies on the availability of novel medical radionuclides. In particular, radiometals are attracting considerable interest since they can be used to label both proteins and peptides. Among them, the β-emitter Ga is widely used in nuclear medicine for positron emission tomography (PET).

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Effective mathematical modelling of health passes during a pandemic.

Sci Rep

April 2022

Scuola Superiore Meridionale, Largo S. Marcellino, 10, 80138, Naples, NA, Italy.

We study the impact on the epidemiological dynamics of a class of restrictive measures that are aimed at reducing the number of contacts of individuals who have a higher risk of being infected with a transmittable disease. Such measures are currently either implemented or at least discussed in numerous countries worldwide to ward off a potential new wave of COVID-19. They come in the form of Health Passes (HP), which grant full access to public life only to individuals with a certificate that proves that they have either been fully vaccinated, have recovered from a previous infection or have recently tested negative to SARS-Cov-2.

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Mediterranean grasslands are semi-natural, fire-prone, species-rich ecosystems that have been maintained for centuries through a combination of fire, grazing, and mowing. Over the past half century, however, grasslands have faced numerous threats, including the abandonment of traditional agro-pastoral practices. Our hypothesis was that mowing and prescribed burning are management practices potentially effective in counteracting the reduction of plant diversity triggered by land abandonment.

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Cross section measurement of terbium radioisotopes for an optimized Tb production with an 18 MeV medical PET cyclotron.

Appl Radiat Isot

June 2022

Albert Einstein Center for Fundamental Physics (AEC), Laboratory for High Energy Physics (LHEP), University of Bern, Sidlerstrasse 5, CH-3012 Bern, Switzerland.

Tb [t = 5.32 d, E = 87 keV (32%); 105 keV (25%) (IAEA, 2021)] is a novel promising radionuclide for theranostic applications in nuclear medicine. Its physical properties make it suitable for single photon emission computed tomography (SPECT) imaging, while its chemistry allows it to be used as a diagnostic partner for therapeutic radiolanthanides or pseudo-radiolanthanides, such as Lu and Y.

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Background: Neonatal infections represent one of the six main types of healthcare-associated infections and have resulted in increasing mortality rates in recent years due to preterm births or problems arising from childbirth. Although advances in obstetrics and technologies have minimized the number of deaths related to birth, different challenges have emerged in identifying the main factors affecting mortality and morbidity. Dataset characterization: We investigated healthcare-associated infections in a cohort of 1203 patients at the level III Neonatal Intensive Care Unit (ICU) of the "Federico II" University Hospital in Naples from 2016 to 2020 (60 months).

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Purpose: Although oncological advances have improved survival rates of female cancer patients, they often suffer a reduced fertility due to treatment side effects. In the present study, we evaluated the potential fertoprotective effects of the specific inhibitor of SIRT1, EX-527, on the gonadotoxic action exerted by cyclophosphamide (CPM) on loss of primordial follicles (PFs).

Methods: The effects of the CPM metabolite phosphoramide mustard (PM) on follicle activation, growth and viability and the protective action of EX-527 against PM effects were evaluated on bovine ovarian cortical strips in vitro cultured for 1 or 6 days.

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Ultra-sensitive measurement of transverse displacements with linear photonic gears.

Nat Commun

February 2022

Dipartimento di Fisica, Università degli studi di Napoli Federico II, Complesso Universitario di Monte S. Angelo, Via Cintia, 80126, Napoli, Italy.

Accurately measuring mechanical displacements is essential for a vast portion of current technologies. Several optical techniques accomplish this task, allowing for non-contact sensing even below the diffraction limit. Here we introduce an optical encoding technique, dubbed "linear photonic gears", that enables ultra-sensitive measurements of a transverse displacement by mapping it into the polarization rotation of a laser beam.

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An Instantaneous Recombination Rate Method for the Analysis of Interband Recombination Processes in ZnO Crystals.

Materials (Basel)

February 2022

Istituto di Scienze Applicate e Sistemi Intelligenti "E. Caianiello", Consiglio Nazionale delle Ricerche (CNR-ISASI), Complesso Universitario di Monte S. Angelo, Via Cupa Cintia 21, 80126 Napoli, Italy.

Time-resolved photoluminescence (TRPL) analysis is often performed to assess the qualitative features of semiconductor crystals using predetermined functions (e.g., double- or multi-exponentials) to fit the decays of PL intensity.

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TiO-Based Nanostructures, Composites and Hybrid Photocatalysts.

Materials (Basel)

February 2022

Department of Chemical Sciences, University of Naples "Federico II", Complesso Universitario di Monte Sant'Angelo, Via Cupa Cintia 21, 80126 Napoli, Italy.

The field of materials sciences has always been strongly interconnected with the most significant technological developments in the modern era, and such an interconnection is absolutely evident at least since the 1950s revolution of electronics and microelectronics, driven by advances in the science of semiconductors [...

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Effect of Oxidative Stress on Reproduction and Development.

Antioxidants (Basel)

February 2022

Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte S. Angelo, via Cinthia 4, 80126 Naples, Italy.

There is a growing amount of literature on the effects of oxidative stress resulting from the imbalance between prooxidants and antioxidants [...

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