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659 results on '"Santo, Maria"'

1. Inversion Ring in Chromonic Twisted Hedgehogs: Theory and Experiment

Author

Ciuchi, Federica, De Santo, Maria Penelope, Paparini, Silvia, Spina, Lorenza, and Virga, Epifanio G.

Subjects
Condensed Matter - Soft Condensed Matter, Mathematical Physics
Abstract

Twisted hedgehogs are defects in spherical cavities with homeotropic anchoring for the nematic director that arise when twist distortions are sufficiently less energetic than splay (and bend) distortions. They bear a characteristic inversion ring, where the director texture changes the sense it spirals about the center of the cavity. This paper applies a quartic twist theory recently proposed to describe the elasticity of chromonics to explain a series of inversion rings observed in aqueous solutions of SSY at two different concentrations. The theory features a phenomenological length a, whose measure is extracted from the data and shown to be fairly independent of the cavity radius, as expected for a material constant.

Published
2024

2. Flexible Physical Unclonable Functions based on non-deterministically distributed Dye-Doped Fibers and Droplets

Author

Bruno, Mauro Daniel Luigi, Lio, Giuseppe Emanuele, Ferraro, Antonio, Nocentini, Sara, Papuzzo, Giuseppe, Forestiero, Agostino, Desiderio, Giovanni, De Santo, Maria Penelope, Wiersma, Diederik Sybolt, Caputo, Roberto, Golemme, Giovanni, Riboli, Francesco, and Barberi, Riccardo Cristoforo

Subjects
Condensed Matter - Materials Science, Condensed Matter - Soft Condensed Matter, Electrical Engineering and Systems Science - Image and Video Processing, Physics - Applied Physics, Physics - Chemical Physics, Physics - Optics
Abstract

The development of new anti-counterfeiting solutions is a constant challenge and involves several research fields. Much interest is devoted to systems that are impossible to clone, based on the Physical Unclonable Function (PUF) paradigm. In this work, new strategies based on electrospinning and electrospraying of dye-doped polymeric materials are presented for the manufacturing of flexible free-standing films that embed different PUF keys. Films can be used to fabricate anticounterfeiting labels having three encryption levels: i) a map of fluorescent polymer droplets, with non deterministic positions on a dense yarn of polymer nanofibers; ii) a characteristic fluorescence spectrum for each label; iii) a challenge-response pairs (CRPs) identification protocol based on the strong nature of the physical unclonable function. The intrinsic uniqueness introduced by the deposition techniques encodes enough complexity into the optical anti-counterfeiting tag to generate thousands of cryptographic keys. The simple and cheap fabrication process as well as the multilevel authentication makes such colored polymeric unclonable tags a practical solution in the secure protection of merchandise in our daily life.

Published
2023

4. Creation and robustness of quantized vortices in a dipolar supersolid when crossing the superfluid-to-supersolid transition

Author

Šindik, Marija, Recati, Alessio, Roccuzzo, Santo Maria, Santos, Luis, and Stringari, Sandro

Subjects
Condensed Matter - Quantum Gases
Abstract

Experiments on dipolar Bose-Einstein condensates have recently reported the observation of supersolidity. Although quantized vortices constitute a key probe of superfluidity, their observability in dipolar supersolids is largely prevented by the strong density depletion caused by the formation of droplets. We present a novel approach to the nucleation of vortices and their observation, based on the quenching of the s-wave scattering length across the superfluid-supersolid transition. Starting from a slowly rotating, vortex-free, configuration in the superfluid phase, we predict vortex nucleation as the system enters the supersolid phase, due to the strong reduction of the critical angular velocity in the supersolid. Once a vortex is created, we show that it is robustly preserved when the condensate is brought back to the superfluid phase, where it may be readily observed.

Published
2022
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9. Supersolid behaviour of a dipolar Bose-Einstein condensate confined in a tube

Author

Roccuzzo, Santo Maria and Ancilotto, Francesco

Subjects
Condensed Matter - Quantum Gases
Abstract

Motivated by a recent experiment [L.Chomaz et al., Nature Physics 14, 442 (2018)], we perform numerical simulations of a dipolar Bose-Einstein Condensate (BEC) in a tubular confinement at T=0 within Density Functional Theory, where the beyond-mean-field correction to the ground state energy is included in the Local Density Approximation. We study the excitation spectrum of the system by solving the corresponding Bogoliubov-de Gennes equations. The calculated spectrum shows a roton minimum, and the roton gap decreases by reducing the effective scattering length. As the roton gap disappears, the system spontaneously develops in its ground-state a periodic, linear structure formed by denser clusters of atomic dipoles immersed in a dilute superfluid background. This structure shows the hallmarks of a supersolid system, i.e. (i) a finite non-classical translational inertia along the tube axis and (ii) the appearance, besides the phonon mode, of the Nambu-Goldstone gapless mode corresponding to phase fluctuations, and related to the spontaneous breaking of the gauge symmetry. A further decrease in the scattering length eventually leads to the formation of a periodic linear array of self-bound droplets., Comment: 5 pages, 4 figures (version accepted for publication in PRA Rapid Communications)

Published
2018
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11. Surface Alignment of Liquid Crystal Films on Nanometer-Thick 3D-Printed Line Patterns with Arbitrary Topologies: Implications for Polarization Gratings, Q‑Plates, and Beam Steerers.

Author

Zappone, Bruno, Geloso, Marco Giuseppe, Ritacco, Tiziana, De Santo, Maria Penelope, Mamuk, Atilla Eren, and Giocondo, Michele

Abstract

Liquid crystal films play a key role in advancing next-generation optical and photonic devices that require a precise in-plane modulation of optical anisotropy. This study employs multiphoton direct laser writing, a high-resolution three-dimensional (3D) printing method, to fabricate pseudoperiodic patterns of lines and grooves on glass surfaces for the in-plane alignment of liquid crystal films. Single layers of lines with submicron thickness and line spacing were fabricated in less than half an hour and forced the in-plane alignment of a liquid crystal film with a thickness of about 10 μm. We validate the method on patterns with singular topologies designed to induce the nucleation of disclination defects with a predetermined spatial arrangement, orientation, and topological strength. Compared to other surface patterning methods, high-resolution 3D printing provides the unique advantage of direct surface fabrication, enabling the creation of nonflat geometries such as terraces and lenses and expanding the design and functionalities of liquid crystal devices. We anticipate that this method will be used to create thin-film devices such as polarization gratings, beam steerers, and q-plates for manipulating polarized and structured light. [ABSTRACT FROM AUTHOR]

Published
2024
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13. CONTROLE DE QUALIDADE NA INDÚSTRIA DE EXTRUSADOS EXPANDIDOS DE MILHO

Author

Almeida, Katcilanya Menezes de, primary, Novais, Danilo de Oliveira, additional, Silva, Júlio César Bezerra Vilar da, additional, Lira, Myrella Cariry, additional, Santo, Maria Luciete Barbosa do Espírito, additional, Rosa, Alessandra Veríssimo de Souza, additional, Neves, Bárbara Araújo, additional, Ribeiro, Radmila Raianni Alves, additional, Melo, Yenisei Bezerra de, additional, Silva, Maria Eduarda Paulino Da, additional, and Nutricionista, Rikaelly Vital Costa, additional

Published
2024
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17. Macroscopic Biaxial Order in Multilayer Films of Bent-Core Liquid Crystals Deposited by Combined Langmuir–Blodgett/Langmuir–Schaefer Technique

Author

Vita, Francesco, primary, Adamo, Fabrizio Corrado, additional, Campana, Mario, additional, Bordokas, Blake, additional, Ciuchi, Federica, additional, De Santo, Maria Penelope, additional, Hermida-Merino, Daniel, additional, Lisovsky, Angela, additional, Pisani, Michela, additional, Pontoni, Diego, additional, Scharrer, Eric, additional, and Francescangeli, Oriano, additional

Published
2024
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19. Impact of the SARS-CoV-2 pandemic and first lockdown on pregnancy monitoring in France: the COVIMATER cross-sectional study

Author

Doncarli, Alexandra, primary, Araujo-Chaveron, Lucia, additional, Crenn-Hébert, Catherine, additional, Demiguel, Virginie, additional, Boudet-Berquier, Julie, additional, Barry, Yaya, additional, Santo, Maria-Eugênia Gomes Do Espirito, additional, Guajardo, Andrea, additional, Menguy, Claudie, additional, Tabaï, Anouk, additional, Wyndels, Karine, additional, Benachi, Alexandra, additional, and Regnault, Nolwenn, additional

Published
2024
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20. IMPACTO DA DIETA VEGANA NA FASE INFANTIL

Author

Almeida, Katcilanya Menezes de, primary, Santo, Maria Luciete Barbosa do Espírito, additional, Paz, Luana Gomes Ribeiro, additional, Silva, Júlio César Bezerra Vilar da, additional, Rosa, Alessandra Veríssimo de Souza, additional, Veiga, Dêmia Kellyani Eleoterio, additional, Lira, Myrella Cariry, additional, Costa, Rikaelly Vital, additional, and Cabral, Ariane Rodrigues, additional

Published
2024
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22. COMPARAÇÃO FÍSICO-QUÍMICA DE FRUTOS DE CIRIGUELA EM DIFERENTES ESTÁGIOS DE MATURAÇÃO

Author

De Almeida, Katcilanya Menezes, primary, Pimentel, Gabriela Mariana Cruz, additional, Do Espírito Santo, Maria Luciete Barbosa, additional, Costa, Rikaelly Vital, additional, Baldanzi, Analu de Azevedo Silva, additional, Oliveira, Áquila Matheus de Souza, additional, Cabral, Ariane Rodrigues, additional, and Nogueira, Ariane Ragel dos Santos, additional

Published
2023
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27. Checklist da Flora de Portugal (Continental, Açores e Madeira)

Author

Aguiar, Carlos Francisco Gonçalves, Capelo, Jorge Henrique, Espírito Santo, Maria Dalila Paula Silva Lourenço do, Honrado, João José Pradinho, Sequeira, Miguel Pinto da Silva e Menezes de, Biblioteca Digital del Real Jardin Botanico de Madrid, Aguiar, Carlos Francisco Gonçalves, Capelo, Jorge Henrique, Espírito Santo, Maria Dalila Paula Silva Lourenço do, Honrado, João José Pradinho, and Sequeira, Miguel Pinto da Silva e Menezes de

Subjects
Flora, Península Ibérica
Published
2011

28. Prevalence of urologic sequelae and bladder and bowel dysfunctions in patients with congenital Zika syndrome: a multicenter evaluation of the Zika Virus Bladder and Bowel Sequelae Assistance Network

Author

Fontes, Juliana Marin, primary, Oliveira, Emmanuel Machado, additional, Monteiro de Melo Prazeres, Tereza Cristina, additional, Nisya de Oliveira Cruz, Glaura, additional, Rizzini, Marta, additional, Passos, Saulo Duarte, additional, Lisboa, Lilian Lira, additional, Ferreira de Araújo, Grace, additional, Azevedo de Almeida, Valéria, additional, Malacarne, Jociele, additional, Emília de Domenico Garcia, Maria, additional, Linhares Barreto, Lilian Cagliari, additional, Calado, Adriano Almeida, additional, Fernandes da Nóbrega, Luciana, additional, Moura Nascimento Santo, Maria Júlia, additional, Gonçalves, Rafael Pauletti, additional, Farache, Luana, additional, Feliciano da Silva, Maurício, additional, Rizzo, Fábio Valente, additional, Dias da Silva, Luiz, additional, Maria de Jesus Amorim, Nilgicy, additional, Guedes Pinheiro, Hannah Cavalcante, additional, Suely de Oliveira Melo, Adriana, additional, de Oliveira Melo, Fabiana, additional, Moreira, Rômulo Dias, additional, Santos da Costa, Benito Junior, additional, de Almeida Melo Maciel Mangueira, Melissa, additional, Varela, Margareth Catoia, additional, and Costa Monteiro, e Lucia Maria, additional

Published
2023
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29. Micro‐ and Nano‐Structured Bacteria Growth Media for Planar Bio‐Photonics

Author

Caligiuri, Vincenzo, primary, Leone, Francesca, additional, Favale, Olga, additional, De Santo, Maria, additional, Bruno, Mauro Daniel Luigi, additional, Mileti, Olga, additional, Pane, Alfredo, additional, Patra, Aniket, additional, Petti, Lucia, additional, Guzman‐Puyol, Susana, additional, Heredia‐Guerrero, José Alejandro, additional, Krahne, Roman, additional, Baldino, Noemi, additional, Bartolino, Roberto, additional, Galluccio, Michele, additional, Annesi, Ferdinanda, additional, and De Luca, Antonio, additional

Published
2023
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31. ANÁLISE DOS CONSERVANTES E SUAS CONSEQUÊNCIAS PRO GRUPO INFANTIL

Author

De Almeida, Katcilanya Menezes, primary, Do Espírito Santo, Maria Luciete Barbosa, additional, Silva, Micaela Maria de Souza, additional, Moura, Nathalia Santos, additional, Costa, Rikaelly Vital, additional, Baldanzi, Analu de Azevedo Silva, additional, De Melo, Yenisei Bezerra, additional, and Oliveira, Áquila Matheus de Souza, additional

Published
2023
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37. Fabrication of Electrospun Keratin Nanofiber Membranes for Air and Water Treatment

Author

Figoli, Alberto, Ursino, Claudia, Ramirez, Diego Omar Sanchez, Carletto, Riccardo Andrea, Tonetti, Cinzia, Varesano, Alessio, De Santo, Maria Penelope, Cassano, Alfredo, and Vineis, Claudia

Subjects
Porous Materials Inc., Keratin -- Mechanical properties, Nylon -- Mechanical properties, Permeability -- Mechanical properties, Methylene blue -- Mechanical properties, Adsorption -- Mechanical properties, Proteins -- Mechanical properties, Wool, Engineering and manufacturing industries, Science and technology
Abstract

Keratin proteins extracted from wool fibers by sulfitolysis were electrospun for the production of active nanofiber membranes (NFMs). The keratin NFMs were composited with nylon woven fabric for improving their mechanical properties as a filtration material. The prepared membranes were characterized in terms of morphology, pore size, contact angle, and performance of water and air permeability. Experimental data showed that most of investigated parameters were affected by the electrospinning time: that is, roughness rose by increasing the electrospinning time, while the narrowest pore size distribution was obtained at the longest electrospinning time (2 h). The pure water permeability (PWP) was greater for the produced NFMs than for the commercial microfiltration membranes and decreased by increasing the electrospinning time. At the longest electrospinning time, the produced NFMs showed a PWP of about 45.7 [m.sup.3]/[m.sup.2] h bar, which is a value greater than those obtained by conventional materials used in water filtration, including microfiltration membranes. According to the data of contact angle measurements, the high hydrophobicity of NFMs membranes could reinforce their stability in water. Other potential applications could be venting, adsorption of VOCs, and separation of oils from oil/water emulsions., INTRODUCTION Keratins are naturally fibrous proteins found in animal tissues, including hair, wool, and horns, characterized by high chemical stability due to the presence of many cysteine residues (7-20%) forming [...]

Published
2019
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38. The Existing Drug Nifuroxazide as an Antischistosomal Agent: In Vitro , In Vivo , and In Silico Studies of Macromolecular Targets

Author

Roquini, Vinícius, primary, Mengarda, Ana C., additional, Cajas, Rayssa A., additional, Martins-da-Silva, Milene F., additional, Godoy-Silva, Julia, additional, Santos, Gustavo A., additional, Espírito-Santo, Maria Cristina C., additional, Pavani, Thais F. A., additional, Melo, Vanusa A., additional, Salvadori, Maria C., additional, Teixeira, Fernanda S., additional, Rando, Daniela G. G., additional, and de Moraes, Josué, additional

Published
2023
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40. Liver Transplants from Donors with Schistosomiasis: Clinical and Epidemiological Profile of Patients at Clinics Hospital of São Paulo, Brazil.

Author

Santos de Almeida, Thiago Tadeu, Carvalho do Espírito Santo, Maria Cristina, and Abdala, Edson

Subjects
*LIVER surgery, *CROSS-sectional method, *PATIENTS, *TRANSPLANTATION of organs, tissues, etc., *HOSPITALS, *RETROSPECTIVE studies, *DESCRIPTIVE statistics, *RESEARCH methodology, *CASE studies, *DATA analysis software, *SCHISTOSOMIASIS, *LIVER transplantation, *DISEASE incidence
Abstract

Organ transplantation is a surgical procedure that consists of awarding an organ. Considering that the transplantation of an organ or tissue is very competitive, due to the low rate of donors and as the function of the liver is preserved even in controlled schistosomatic fibrosis, it is possible to donate the organ even with the liver infected by verminosis. By analyzing the prevalence and evolution of liver donors with schistosomiasis in liver transplants performed at Hospital das Clínicas, Faculty of Medicine, University of São Paulo - HCFMUSP. This is a descriptive study, consisting of a series of cases, with a retrospective and cross-sectional analysis. The study evaluated the medical records of patients being followed up at the Liver Transplant Outpatient Clinic, at HCFMUSP, from January 2002 to December 2020. The Department of Pathology at USP found 16 patients with records of schistosomiasis reports, of which only one was effective as a donor, since the other patients were excluded due to the state of law of the organ. An analysis showed that almost all donors were men with schistosomiasis with a mean age of 52.55 years. In this context, there was a prevalence of a case of a liver donor with the hepatointestinal form of schistosomiasis, later the organ was transplanted, and the recipient, presented a good evolution until this moment, having been analyzed clinically and laboratory. It is noteworthy that this is the first HCFMUSP study that evaluates liver donors with schistosomiasis mansoni and the evolution of the respective recipient. [ABSTRACT FROM AUTHOR]

Published
2024
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41. Micro‐ and Nano‐Structured Bacteria Growth Media for Planar Bio‐Photonics.

Author

Caligiuri, Vincenzo, Leone, Francesca, Favale, Olga, De Santo, Maria, Bruno, Mauro Daniel Luigi, Mileti, Olga, Pane, Alfredo, Patra, Aniket, Petti, Lucia, Guzman‐Puyol, Susana, Heredia‐Guerrero, José Alejandro, Krahne, Roman, Baldino, Noemi, Bartolino, Roberto, Galluccio, Michele, Annesi, Ferdinanda, and De Luca, Antonio

Subjects
PHOTONIC crystals, BIOMATERIALS, BACTERIAL growth, QUASICRYSTALS, BACTERIA, QUANTUM optics
Abstract

Bio‐inspired and biodegradable quantum optics scenarios constitute a pathway toward environmentally friendly front‐end technologies. Such an inspiring perspective necessitates the replacement of classic gain materials with a biological counterpart like photoluminescent bacteria. It is easy to imagine that, in this case, a planar and cell‐viable substitute of classic bulk solid‐states resonators can be highly beneficial. In this paper a micro‐ and nano‐photonic structuration of both a standard and a functionalized version of a typical bacterial growth medium (Luria‐Bertani Agar – LBA) is successfully realized. Three structures belonging to the categories of photonic crystals are replicated, such as quasi‐crystals and meta‐surfaces, demonstrating how the proposed media can be used as templates for high‐end photonic applications. The optical quality of the replicated structures is confirmed by far‐field diffraction measurements. The structured growth media allow for a broad control of the surface wettability by accessing a so‐called Wenzel state, in which the original hydrophilicity of a material is increased due to the photonic structuration. Finally, the suitability of the nano‐structured LBA as a plasmonic platform is evidenced. The proposed micro‐and nano‐structured photonic growth media constitute the first, fundamental step toward quantum optical frameworks from biological media. [ABSTRACT FROM AUTHOR]

Published
2024
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47. Supplementary Data from Immunogenicity and Safety of COVID-19 Vaccine BNT162b2 for Patients with Solid Cancer: A Large Cohort Prospective Study from a Single Institution

Author

Di Noia, Vincenzo, primary, Pimpinelli, Fulvia, primary, Renna, Davide, primary, Barberi, Vittoria, primary, Maccallini, Maria Teresa, primary, Gariazzo, Ludovica, primary, Pontone, Martina, primary, Monti, Alessandro, primary, Campo, Flaminia, primary, Taraborelli, Emanuela, primary, Di Santo, Maria, primary, Petrone, Fabrizio, primary, Mandoj, Chiara, primary, Ferraresi, Virginia, primary, Ferretti, Gianluigi, primary, Carlini, Paolo, primary, Di Bella, Ornella, primary, Conti, Laura, primary, La Malfa, Antonia Marina, primary, Pellini, Raul, primary, Bracco, Domenico, primary, Giannarelli, Diana, primary, Morrone, Aldo, primary, and Cognetti, Francesco, primary

Published
2023
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48. Data from Immunogenicity and Safety of COVID-19 Vaccine BNT162b2 for Patients with Solid Cancer: A Large Cohort Prospective Study from a Single Institution

Author

Di Noia, Vincenzo, primary, Pimpinelli, Fulvia, primary, Renna, Davide, primary, Barberi, Vittoria, primary, Maccallini, Maria Teresa, primary, Gariazzo, Ludovica, primary, Pontone, Martina, primary, Monti, Alessandro, primary, Campo, Flaminia, primary, Taraborelli, Emanuela, primary, Di Santo, Maria, primary, Petrone, Fabrizio, primary, Mandoj, Chiara, primary, Ferraresi, Virginia, primary, Ferretti, Gianluigi, primary, Carlini, Paolo, primary, Di Bella, Ornella, primary, Conti, Laura, primary, La Malfa, Antonia Marina, primary, Pellini, Raul, primary, Bracco, Domenico, primary, Giannarelli, Diana, primary, Morrone, Aldo, primary, and Cognetti, Francesco, primary

Published
2023
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49. État des connaissances géochimiques pour la détection de l’hydrogène naturel et inventaire des données géochimiques existantes permettant d’identifier des remontées de fluides profonds dans le sud du Québec

Author

Bordeleau, Geneviève, Moreira Dos Santo, Maria Luisa, Bordeleau, Geneviève, and Moreira Dos Santo, Maria Luisa

Abstract

Complémentaires aux méthodes d’investigation géologiques et géophysiques, les méthodes géochimiques permettent de raffiner l’évaluation du potentiel pour l’hydrogène d’une région donnée, soit par l’échantillonnage direct des gaz présents dans le sol, soit indirectement par l’examen des propriétés géochimiques des eaux souterraines. Pour cette dernière approche, les bassins sédimentaires du sud du Québec, et particulièrement les Basses-Terres du Saint-Laurent, représentent un terrain propice à ce genre d’études en raison de la densité des analyses d’eaux souterraines disponibles et de la relativement bonne compréhension que l’on a de la distribution des failles en profondeur. Il est ainsi possible d’examiner les bases de données hydrogéochimiques disponibles pour les aquifères superficiels, dans le but d’en extraire les informations qui pourraient indiquer que certaines failles sont perméables et agissent comme des conduits pour la migration de fluides profonds vers la surface. En effet, les roches sources potentielles pour l’hydrogène sont principalement situées en profondeur sous la couverture sédimentaire et cette couverture est susceptible de retenir l’hydrogène, qui ne sera donc pas (ou peu) détecté en surface à moins qu’une zone de fractures ou une faille perméable ne facilite sa migration. L’examen des bases de données hydrogéochimiques pour le sud du Québec a ainsi mis en évidence trois secteurs dans les Basses-Terres du Saint-Laurent, où des indicateurs suggèrent que des fluides profonds ont pu remontervers la surface le long de failles perméables ou partiellement perméables, soit : 1) le secteur de la Faille de la Rivière Jacques-Cartier près de Saint-Edouard-de-Lotbinière, 2) le secteur de la Faille d’Aston et de la Ligne de Logan à l’ouest de Drummondville et 3) le secteur au sud de Montréal. Une fois qu’un secteur géographiquement restreint a été identifié comme étant favorable pour la présence d’hydrogène naturel, des méthodes d’investigations géochimiq

Published
2023

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