832 results on '"A. Balestrino"'
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2. Cervical sagittal balance in patients operated for degenerative cervical myelopathy: does the shape matter?
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A. Balestrino, I. Melloni, G. Zona, and E. Tessitore
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Neurology. Diseases of the nervous system ,RC346-429 - Published
- 2024
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3. Neural correlates of bradykinesia in Parkinson’s disease: a kinematic and functional MRI study
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Sarasso, Elisabetta, Gardoni, Andrea, Zenere, Lucia, Emedoli, Daniele, Balestrino, Roberta, Grassi, Andrea, Basaia, Silvia, Tripodi, Chiara, Canu, Elisa, Malcangi, Massimo, Pelosin, Elisa, Volontè, Maria Antonietta, Corbetta, Davide, Filippi, Massimo, and Agosta, Federica
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- 2024
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4. First detection of Leishmania major in dogs living in an endemic area of zoonotic cutaneous leishmaniasis in Tunisia
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Maurelli, Maria Paola, Zribi, Lilia, Fayala, Nour El Houda Ben, Manzillo, Valentina Foglia, Balestrino, Ines, Hamdi, Noureddine, Bouratbine, Aida, Gizzarelli, Manuela, Rinaldi, Laura, Aoun, Karim, and Oliva, Gaetano
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- 2024
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5. Efficiency assessment of a novel automatic mosquito pupae sex separation system in support of area-wide male-based release strategies
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Mamai, W., Bueno-Masso, O., Wallner, T., Nikièma, S. A., Meletiou, S., Deng, L., Balestrino, F., Yamada, H., and Bouyer, J.
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- 2024
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6. Mass irradiation of adult Aedes mosquitoes using a coolable 3D printed canister
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Balestrino, F., Bimbilé Somda, N. S., Samuel, M., Meletiou, S., Bueno, O., Wallner, T., Yamada, H., Mamai, W., Vreysen, M. J. B., and Bouyer, J.
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- 2024
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7. Editorial: Biomarkers of non-motor symptoms in Parkinson's disease and parkinsonisms
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Massimo Filippi, Roberta Balestrino, and Federica Agosta
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Parkinson ,parkinsonism ,biomarker ,non-motor symptoms ,neurodegeneration ,Neurology. Diseases of the nervous system ,RC346-429 - Published
- 2023
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8. Determining the Electron-Phonon Coupling in Superconducting Cuprates by Resonant Inelastic X-ray Scattering: Methods and Results on Nd$_{1+x}$Ba$_{2-x}$Cu$_3$O$_{7-\delta}$
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Braicovich, Lucio, Rossi, Matteo, Fumagalli, Roberto, Peng, Yingying, Wang, Yan, Arpaia, Riccardo, Betto, Davide, De Luca, Gabriella M., Di Castro, Daniele, Kummer, Kurt, Sala, Marco Moretti, Pagetti, Mattia, Balestrino, Giuseppe, Brookes, Nicholas B., Salluzzo, Marco, Johnston, Steven, Brink, Jeroen van den, and Ghiringhelli, Giacomo
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Condensed Matter - Superconductivity ,Condensed Matter - Strongly Correlated Electrons - Abstract
The coupling between lattice vibration quanta and valence electrons can induce charge density modulations and decisively influence the transport properties of materials, e.g. leading to conventional superconductivity. In high critical temperature superconductors, where electronic correlation is the main actor, the actual role of electron-phonon coupling (EPC) is being intensely debated theoretically and investigated experimentally. We present an in-depth study of how the EPC strength can be obtained directly from resonant inelastic x-ray scattering (RIXS) data through the theoretical approach derived by Ament et al. [EPL 95, 27008 (2011)]. The role of the model parameters (e.g. phonon energy $\omega_0$, intermediate state lifetime $1/\Gamma$, EPC matrix element $M$, and detuning energy $\Omega$) is thoroughly analyzed, providing general relations among them that can be used to make quantitative estimates of the dimensionless EPC $g = (M/\omega_0)^2$ without detailed microscopic modeling. We then apply these methods to very high resolution Cu $L_3$ edge RIXS spectra of three Nd$_{1+x}$Ba$_{2-x}$Cu$_3$O$_{7-\delta}$ films. For the insulating antiferromagnetic parent compound the value of $M$ as a function of the in-plane momentum transfer is obtained for Cu-O bond-stretching (breathing) and bond-bending (buckling) phonon branches. For the underdoped and the nearly optimally doped samples, the effects of Coulomb screening and of charge-density-wave correlations on $M$ are assessed. In light of the anticipated further improvements of the RIXS experimental resolution, this work provides a solid framework for an exhaustive investigation of the EPC in cuprates and other quantum materials., Comment: 21 pages, 16 figures
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- 2019
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9. Cerebro-cerebellar motor networks in clinical subtypes of Parkinson’s disease
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Silvia Basaia, Federica Agosta, Alessandro Francia, Camilla Cividini, Roberta Balestrino, Tanja Stojkovic, Iva Stankovic, Vladana Markovic, Elisabetta Sarasso, Andrea Gardoni, Rosita De Micco, Luigi Albano, Elka Stefanova, Vladimir S. Kostic, and Massimo Filippi
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Neurology. Diseases of the nervous system ,RC346-429 - Abstract
Abstract Parkinson’s disease (PD) patients can be classified in tremor-dominant (TD) and postural-instability-and-gait-disorder (PIGD) motor subtypes. PIGD represents a more aggressive form of the disease that TD patients have a potentiality of converting into. This study investigated functional alterations within the cerebro-cerebellar system in PD-TD and PD-PIGD patients using stepwise functional connectivity (SFC) analysis and identified neuroimaging features that predict TD to PIGD conversion. Thirty-two PD-TD, 26 PD-PIGD patients and 60 healthy controls performed clinical/cognitive evaluations and resting-state functional MRI (fMRI). Four-year clinical follow-up data were available for 28 PD-TD patients, who were classified in 10 converters (cTD-PD) and 18 non-converters (ncTD-PD) to PIGD. The cerebellar seed-region was identified using a fMRI motor task. SFC analysis, characterizing regions that connect brain areas to the cerebellar seed at different levels of link-step distances, evaluated similar and divergent alterations in PD-TD and PD-PIGD. The discriminatory power of clinical data and/or SFC in distinguishing cPD-TD from ncPD-TD patients was assessed using ROC curve analysis. Compared to PD-TD, PD-PIGD patients showed decreased SFC in temporal lobe and occipital lobes and increased SFC in cerebellar cortex and ponto-medullary junction. Considering the subtype-conversion analysis, cPD-TD patients were characterized by increased SFC in temporal and occipital lobes and in cerebellum and ponto-medullary junction relative to ncPD-TD group. Combining clinical and SFC data, ROC curves provided the highest classification power to identify conversion to PIGD. These findings provide novel insights into the pathophysiology underlying different PD motor phenotypes and a potential tool for early characterization of PD-TD patients at risk of conversion to PIGD.
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- 2022
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10. Depth-resolved resonant inelastic x-ray scattering at a superconductor/half-metallic ferromagnet interface through standing-wave excitation
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Kuo, Cheng-Tai, Lin, Shih-Chieh, Ghiringhelli, Giacomo, Peng, Yingying, De Luca, Gabriella Maria, Di Castro, Daniele, Betto, Davide, Gehlmann, Mathias, Wijnands, Tom, Huijben, Mark, Meyer-Ilse, Julia, Gullikson, Eric, Kortright, Jeffrey B., Vailionis, Arturas, Gauquelin, Nicolas, Verbeeck, Johan, Gerber, Timm, Balestrino, Giuseppe, Brookes, Nicholas B., Braicovich, Lucio, and Fadley, Charles S.
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Condensed Matter - Materials Science ,Condensed Matter - Strongly Correlated Electrons ,Condensed Matter - Superconductivity - Abstract
We demonstrate that combining standing-wave (SW) excitation with resonant inelastic x-ray scattering (RIXS) can lead to depth resolution and interface sensitivity for studying orbital and magnetic excitations in correlated oxide heterostructures. SW-RIXS has been applied to multilayer heterostructures consisting of a superconductor La$_{1.85}$Sr$_{0.15}$CuO$_{4}$(LSCO) and a half-metallic ferromagnet La$_{0.67}$Sr$_{0.33}$MnO$_{3}$ (LSMO). Easily observable SW effects on the RIXS excitations were found in these LSCO/LSMO multilayers. In addition, we observe different depth distribution of the RIXS excitations. The magnetic excitations are found to arise from the LSCO/LSMO interfaces, and there is also a suggestion that one of the dd excitations comes from the interfaces. SW-RIXS measurements of correlated-oxide and other multilayer heterostructures should provide unique layer-resolved insights concerning their orbital and magnetic excitations, as well as a challenge for RIXS theory to specifically deal with interface effects., Comment: 18 pages, 3 figures, plus supplemental materials (14 pages)
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- 2018
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11. Depth-resolved resonant inelastic x-ray scattering at a superconductor/half-metallic-ferromagnet interface through standing wave excitation
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Kuo, CT, Lin, SC, Ghiringhelli, G, Peng, Y, De Luca, GM, Di Castro, D, Betto, D, Gehlmann, M, Wijnands, T, Huijben, M, Meyer-Ilse, J, Gullikson, E, Kortright, JB, Vailionis, A, Gauquelin, N, Verbeeck, J, Gerber, T, Balestrino, G, Brookes, NB, Braicovich, L, and Fadley, CS
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cond-mat.mtrl-sci ,cond-mat.str-el ,cond-mat.supr-con - Abstract
We demonstrate that combining standing wave (SW) excitation with resonant inelastic x-ray scattering (RIXS) can lead to depth resolution and interface sensitivity for studying orbital and magnetic excitations in correlated oxide heterostructures. SW-RIXS has been applied to multilayer heterostructures consisting of a superconductor La1.85Sr0.15CuO4 (LSCO) and a half-metallic ferromagnet La0.67Sr0.33MnO3 (LSMO). Easily observable SW effects on the RIXS excitations were found in these LSCO/LSMO multilayers. In addition, we observe different depth distribution of the RIXS excitations. The magnetic excitations are found to arise from the LSCO/LSMO interfaces, and there is also a suggestion that one of the dd excitations comes from the interfaces. SW-RIXS measurements of correlated-oxide and other multilayer heterostructures should provide unique layer-resolved insights concerning their orbital and magnetic excitations, as well as a challenge for RIXS theory to specifically deal with interface effects.
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- 2018
12. Cerebro-cerebellar motor networks in clinical subtypes of Parkinson’s disease
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Basaia, Silvia, Agosta, Federica, Francia, Alessandro, Cividini, Camilla, Balestrino, Roberta, Stojkovic, Tanja, Stankovic, Iva, Markovic, Vladana, Sarasso, Elisabetta, Gardoni, Andrea, De Micco, Rosita, Albano, Luigi, Stefanova, Elka, Kostic, Vladimir S., and Filippi, Massimo
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- 2022
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13. Mark–Release–Recapture Trial with Aedes albopictus (Diptera, Culicidae) Irradiated Males: Population Parameters and Climatic Factors.
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Amaro, Fátima Isabel Falcão, Soares, Patricia, Velo, Enkelejda, Carvalho, Danilo Oliveira, Gomez, Maylen, Balestrino, Fabrizio, Puggioli, Arianna, Bellini, Romeo, and Osório, Hugo Costa
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AEDES albopictus ,DENGUE viruses ,WEATHER ,PARAMETERS (Statistics) ,INTRODUCED species - Abstract
Simple Summary: Aedes albopictus mosquitoes spread arboviruses like dengue, Zika, or chikungunya. The Sterile Insect Technique (SIT) can be used as a prevention and control tool against Ae. albopictus populations. Mark–release–recapture (MRR) trials are fundamental to estimate the size of the wild population in target areas and to determine the dispersal capacity and survival of sterile males in open field conditions. Environmental conditions can affect the MRR trial's results; thus, the influence of climatic factors on the first MRR trial with Ae. albopictus marked sterile males conducted in Portugal was analyzed. In October 2022, for three consecutive weeks at two different release points, 84,000 sterile males were released over 50 ha of the study area, in the municipality of Faro, Southern Portugal, and mosquitoes were recaptured by human landing collection (HLC) one, two, four, and six days after release. Distance travelled, daily survival, and life expectancy in the field were estimated for the released sterile males and the influence of climatic factors was analyzed. Despite no statistically significant association being found with humidity, temperature, and precipitation, it is crucial to plan MRRs, considering weather conditions for a more efficient application of the SIT in an integrated vector management program. Aedes albopictus is considered one of the major invasive species in the world and can transmit viruses such as dengue, Zika, or chikungunya. The Sterile Insect Technique (SIT) can be used to suppress the native populations of Ae. albopictus. Mark–release–recapture (MRR) studies are crucial to support the development of the release strategy during the SIT application. Meanwhile, weather conditions can affect the MRR trial's results and it is critical to understand the influence of climatic factors on the results. In October 2022, 84,000 irradiated sterile males were released for three consecutive weeks in Faro, Southern Portugal. Mosquitoes were recaptured by human landing collection (HLC) one, two, four, and six days after release. Generalized linear models with a negative binomial family and log function were used to estimate the factors associated with the number of recaptured mosquitoes, prevalence ratios, and the 95% confidence intervals (CIs). A total of 84,000 sterile male mosquitoes were released, with 528 recaptured (0.8%) by HLC. The prevalence of recaptured mosquitoes was 23% lower when the wind intensity was moderate. Marked sterile males had an average median distance travelled of 88.7 m. The median probability of daily survival and the average life expectancy were 61.6% and 2.1 days, respectively. The wild male population estimate was 443.33 males/ha. Despite no statistically significant association being found with humidity, temperature, and precipitation, it is important to consider weather conditions during MRR trial analyses to obtain the best determinant estimation and a more efficient application of the SIT in an integrated vector management program. [ABSTRACT FROM AUTHOR]
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- 2024
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14. Examining the Veterinary Electronic Antimicrobial Prescriptions for Dogs and Cats in the Campania Region, Italy: Corrective Strategies Are Imperative
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Valentina Foglia Manzillo, Maria Francesca Peruzy, Manuela Gizzarelli, Berardino Izzo, Paolo Sarnelli, Antonio Carrella, Giuseppina Vinciguerra, Claudia Chirollo, Nour El Houda Ben Fayala, Ines Balestrino, and Gaetano Oliva
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antimicrobials ,companion animals ,veterinary electronic prescription ,antimicrobial resistance ,Veterinary medicine ,SF600-1100 ,Zoology ,QL1-991 - Abstract
Companion animals are increasingly being recognised as important contributors to the spread of antimicrobial-resistant bacteria. The present work aimed to measure the antimicrobial drug prescribing in dogs and cats in the Campania Region, Italy by analysing the Veterinary Electronic Prescriptions (VEPs) between 2019 and 2020. The medical records associated with antimicrobial drug prescriptions were collected according to the drug administration (systemic or topical) and the rationale for the treatment chosen. In the period under investigation, 166,879 drugs were prescribed of which 129,116 (73.4%) were antimicrobial. A total of 83,965 (65%) antibiotics were prescribed to dogs, 40,477 (31.4%) to cats, and 4674 (3.6%) to other companion animals. In dogs, 90.5% of VEPs prescribed for systemic treatment included an antimicrobial Critically Important or Highly Important or Important for human medicine (WHO, 2018). The most widely prescribed class was fluoroquinolones. The antimicrobials prescribed were mainly metronidazole–spiramycin (29.7%), amoxicillin–clavulanic (19.6%), enrofloxacin and cephalexin in dogs (16.5%) and enrofloxacin (22.6%) and amoxicillin–clavulanic acid (21.4%) in cats. Based on the results, the widespread use of broad-spectrum antimicrobials and the use of molecules for which limitations should be observed according to the EMA guidelines has emerged.
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- 2023
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15. Longitudinal brain functional connectivity changes induced by neurosurgical thalamotomy for tremor in Parkinson’s disease
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Luigi Albano, Silvia Basaia, Daniele Emedoli, Roberta Balestrino, Edoardo Pompeo, Lina Raffaella Barzaghi, Antonella Castellano, Andrea Falini, Sandro Iannaccone, Pietro Mortini, Massimo Filippi, and Federica Agosta
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Neurology. Diseases of the nervous system ,RC346-429 - Published
- 2023
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16. Border Reconfigurations in Contagious Societies. Epidemics as Biopolitical Crises from the Decameron to Nemesis
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Alice Balestrino
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Literary representation of epidemics and contagion ,Biopolitics ,Border Studies ,Philip Roth’s Nemesis ,Decameron ,Language and Literature ,Literature (General) ,PN1-6790 - Abstract
This article aims at investigating two narratives about historical moments of sociopolitical, economic, and cultural crisis represented through literary descriptions of epidemics. I will focus on the subtext of the plague in one of the foundational texts of the Western canon, the Decameron, paying particular attention to the metaphor of contagion as a phenomenon allowing for the renegotiations of biopolitical borders in the Florentine society of the Trecento. Building on images of contamination as vehicles of contagion, I am interested in interrogating the roots and scope of the reconsideration of traditional norms and accustomed practices that Giovanni Bocaccio frames in biopolitical terms in the description of the 1348 plague in Florence. I will also take into consideration Philip Roth’s 2010 novel Nemesis, which is set against the background of the polio outbreak in Newark in 1944. Nemesis depicts a prophylactic measure identical to the country retreat that famously frames the main narrative in the Decameron, yet in Roth’s novel it represents a failed attempt to escape contagion. Another narrative trait that Nemesis shares with the Decameron is the context: a society on the verge of essential transformations in the political, cultural, and economic realm. Indeed, mercantile Florence of the Trecento was on the brink of a new era, the Early Modern period, likewise 1944 USA was involved in WWII, fighting for the geopolitical supremacy over a new world order (the Cold War) and shaping a new socio-economic model: neoliberalism.
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- 2022
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17. Selective Alteration of the Left Arcuate Fasciculus in Two Patients Affected by Creatine Transporter Deficiency
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Balestrino, Maurizio, primary, Adriano, Enrico, additional, Alì, Paolo Alessandro, additional, and Pardini, Matteo, additional
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- 2024
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18. Cognitive impairment assessment through handwriting (COGITAT) score: a novel tool that predicts cognitive state from handwriting for forensic and clinical applications
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Balestrino, Maurizio, primary, Brugnolo, Andrea, additional, Girtler, Nicola, additional, Pardini, Matteo, additional, Rizzetto, Cristiano, additional, Alì, Paolo Alessandro, additional, Cocito, Leonardo, additional, and Schiavetti, Irene, additional
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- 2024
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19. Alpha-1 Antitrypsin PI M Heterozygotes with Rare Variants: Do They Need a Clinical and Functional Follow-Up?
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Annunziata, Anna, primary, Fiorentino, Giuseppe, additional, Balestrino, Marco, additional, Rega, Roberto, additional, Spinelli, Sara, additional, Atripaldi, Lidia, additional, Sola, Alessio, additional, Massaro, Federica, additional, and Calabrese, Cecilia, additional
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- 2024
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20. Pulmonary rehabilitation in patients with interstitial lung diseases: Correlates of success
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Brunetti, Giuseppe, Malovini, Alberto, Maniscalco, Mauro, Balestrino, Antonella, Carone, Mauro, Visca, Dina, Capelli, Armando, Vitacca, Michele, Bellazzi, Riccardo, Piaggi, Giancarlo, Fuschillo, Salvatore, Aliani, Maria, Spanevello, Antonio, Prince, Ilaria, Paneroni, Mara, and Ambrosino, Nicolino
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- 2021
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21. Influence of apical oxygen on the extent of in-plane exchange interaction in cuprate superconductors
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Peng, Y. Y., Dellea, G., Minola, M., Conni, M., Amorese, A., Di Castro, D., De Luca, G. M., Kummer, K., Salluzzo, M., Sun, X., Zhou, X. J., Balestrino, G., Tacon, M. Le, Keimer, B., Braicovich, L., Brookes, N. B., and Ghiringhelli, G.
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Condensed Matter - Superconductivity - Abstract
In high Tc superconductors the magnetic and electronic properties are determined by the probability that valence electrons virtually jump from site to site in the CuO2 planes, a mechanism opposed by on-site Coulomb repulsion and favored by hopping integrals. The spatial extent of the latter is related to transport properties, including superconductivity, and to the dispersion relation of spin excitations (magnons). Here, for three antiferromagnetic parent compounds (single-layer Bi2Sr0.99La1.1CuO6+delta, double-layer Nd1.2Ba1.8Cu3O6 and infinite-layer CaCuO2) differing by the number of apical atoms, we compare the magnetic spectra measured by resonant inelastic x-ray scattering over a significant portion of the reciprocal space and with unprecedented accuracy. We observe that the absence of apical oxygens increases the in-plane hopping range and, in CaCuO2, it leads to a genuine 3D exchange-bond network. These results establish a corresponding relation between the exchange interactions and the crystal structure, and provide fresh insight into the materials dependence of the superconducting transition temperature., Comment: 9 pages, 4 figures, 1 Table, 42 references
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- 2016
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22. High Tc superconductivity at the interface between the CaCuO2 and SrTiO3 insulating oxides
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Di Castro, D., Cantoni, C., Ridolfi, F., Aruta, C., Tebano, A., Yang, N., and Balestrino, G.
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Condensed Matter - Superconductivity - Abstract
At interfaces between complex oxides it is possible to generate electronic systems with unusual electronic properties, which are not present in the isolated oxides. One important example is the appearance of superconductivity at the interface between insulating oxides, although, until now, with very low Tc. We report the occurrence of high Tc superconductivity in the bilayer CaCuO2/SrTiO3, where both the constituent oxides are insulating. In order to obtain a superconducting state, the CaCuO2/SrTiO3 interface must be realized between the Ca plane of CaCuO2 and the TiO2 plane of SrTiO3. Only in this case extra oxygen ions can be incorporated in the interface Ca plane, acting as apical oxygen for Cu and providing holes to the CuO2 planes. A detailed hole doping spatial profile has been obtained by STEM/EELS at the O K-edge, clearly showing that the (super)conductivity is confined to about 1-2 CaCuO2 unit cells close to the interface with SrTiO3. The results obtained for the CaCuO2/SrTiO3 interface can be extended to multilayered high Tc cuprates, contributing to explain the dependence of Tc on the number of CuO2 planes in these systems., Comment: 14 pages, 4 figures
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- 2016
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23. A Mark-Release-Recapture Study to Estimate Field Performance of Imported Radio-Sterilized Male Aedes albopictus in Albania
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Enkelejda Velo, Fabrizio Balestrino, Përparim Kadriaj, Danilo Oliveira Carvalho, Ahmadou Dicko, Romeo Bellini, Arianna Puggioli, Dusan Petrić, Antonios Michaelakis, Francis Schaffner, David Almenar, Igor Pajovic, Alfred Beqirllari, Migel Ali, Gjergji Sino, Elton Rogozi, Vjola Jani, Adelina Nikolla, Tanja Porja, Thanas Goga, Elena Fălcuă, Mihaela Kavran, Dubravka Pudar, Ognyan Mikov, Nadya Ivanova-Aleksandrova, Aleksandar Cvetkovikj, Muhammet Mustafa Akıner, Rados Mikovic, Lindita Tafaj, Silva Bino, Jeremy Bouyer, and Wadaka Mamai
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mosquitoes ,pest ,management ,survival ,dispersal ,competitiveness ,Biotechnology ,TP248.13-248.65 - Abstract
The pathogen transmitting Aedes albopictus mosquito is spreading rapidly in Europe, putting millions of humans and animals at risk. This species is well-established in Albania since its first detection in 1979. The sterile insect technique (SIT) is increasingly gaining momentum worldwide as a component of area-wide-integrated pest management. However, estimating how the sterile males will perform in the field and the size of target populations is crucial for better decision-making, designing and elaborating appropriate SIT pilot trials, and subsequent large-scale release strategies. A mark-release-recapture (MRR) experiment was carried out in Albania within a highly urbanized area in the city of Tirana. The radio-sterilized adults of Ae. albopictus Albania strain males were transported by plane from Centro Agricoltura Ambiente (CAA) mass-production facility (Bologna, Italy), where they were reared. In Albania, sterile males were sugar-fed, marked with fluorescent powder, and released. The aim of this study was to estimate, under field conditions, their dispersal capacity, probability of daily survival and competitiveness, and the size of the target population. In addition, two adult mosquito collection methods were also evaluated: BG-Sentinel traps baited with BG-Lure and CO2, (BGS) versus human landing catch (HLC). The overall recapture rates did not differ significantly between the two methods (2.36% and 1.57% of the total male released were recaptured respectively by BGS and HLC), suggesting a similar trapping efficiency under these conditions. Sterile males traveled a mean distance of 93.85 ± 42.58 m and dispersed up to 258 m. Moreover, they were observed living in the field up to 15 days after release with an average life expectancy of 4.26 ± 0.80 days. Whether mosquitoes were marked with green, blue, yellow, or pink, released at 3.00 p.m. or 6.00 p.m., there was no significant difference in the recapture, dispersal, and survival rates in the field. The Fried competitiveness index was estimated at 0.28. This mark-release-recapture study provided important data for better decision-making and planning before moving to pilot SIT trials in Albania. Moreover, it also showed that both BG-traps and HLC were successful in monitoring adult mosquitoes and provided similar estimations of the main entomological parameters needed.
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- 2022
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24. Effect of cage size on Aedes albopictus wing length, survival and egg production
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Pudar, Dubravka, Puggioli, Arianna, Balestrino, Fabrizio, Sy, Victoria, Carrieri, Marco, Bellini, Romeo, and Petrić, Dušan
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- 2021
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25. Efficiency assessment of a novel automatic mosquito pupae sex separation system in support of area-wide male-based release strategies
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Mamaï, Wadaka, Bueno-Masso, Odet, Wallner, Thomas, Nikièma, S.A., Meletiou, Sotiris, Deng, L., Balestrino, Fabrizio, Yamada, Hanano, Bouyer, Jérémy, Mamaï, Wadaka, Bueno-Masso, Odet, Wallner, Thomas, Nikièma, S.A., Meletiou, Sotiris, Deng, L., Balestrino, Fabrizio, Yamada, Hanano, and Bouyer, Jérémy
- Abstract
This study provides a comparative analysis of two state-of-the-art automatic mosquito pupae sex sorters currently available: the ORINNO and the WOLBAKI Biotech pupae sex separation systems, which both exploit the sexual size dimorphism of pupae. In Aedes aegypti, the WOLBAKI sex sorter and the ORINNO with a sieve mesh size of 1.050 mm achieved sex separation with female contamination rates below 1%, low pupae mortality rates and high male flight capacity. However, in Ae. albopictus, there was more variability, with female contamination rates above the 1% threshold and pupae mortality reaching 27% when using the ORINNO sorter. On the other hand, the WOLBAKI sorter achieved a male pupae recovery of 47.99 ± 8.81% and 50.91 ± 11.77% in Ae. aegypti and Ae. albopictus, respectively, while the ORINNO sorter with a smaller sieve size achieved male pupae recoveries of 38.08 ± 9.69% and 40.16 ± 2.73% in Ae. aegypti and Ae. albopictus, respectively. This study provides valuable information for researchers and practitioners in the field, assisting in the selection of the most suitable system for mosquito control, management and research programs depending on their specific requirements.
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- 2024
26. Mass irradiation of adult Aedes mosquitoes using a coolable 3D printed canister
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Balestrino, Fabrizio, Bimbilé Somda, Nanwintoum Séverin, Samuel, M., Meletiou, Sotiris, Bueno, O., Wallner, Thomas, Yamada, Hanano, Mamaï, Wadaka, Vreysen, Marc J.B., Bouyer, Jérémy, Balestrino, Fabrizio, Bimbilé Somda, Nanwintoum Séverin, Samuel, M., Meletiou, Sotiris, Bueno, O., Wallner, Thomas, Yamada, Hanano, Mamaï, Wadaka, Vreysen, Marc J.B., and Bouyer, Jérémy
- Abstract
In the last decade, the use of the sterile insect technique (SIT) to suppress mosquito vectors have rapidly expanded in many countries facing the complexities of scaling up production and procedures to sustain large-scale operational programs. While many solutions have been proposed to improve mass production, sex separation and field release procedures, relatively little attention has been devoted to effective mass sterilization of mosquitoes. Since irradiation of pupae en masse has proven difficult to standardise with several variables affecting dose response uniformity, the manipulation of adult mosquitoes appears to be the most promising method to achieve effective and reliable sterilization of large quantities of mosquitoes. A 3D-printed phase change material based coolable canister was developed which can compact, immobilize and hold around 100,000 adult mosquitoes during mass radio sterilization procedures. The mass irradiation and compaction treatments affected the survival and the flight ability of Aedes albopictus and Aedes aegypti adult males but the use of the proposed irradiation canister under chilled conditions (6.7–11.3 °C) significantly improved their quality and performance. The use of this cooled canister will facilitate adult mass irradiation procedures in self-contained irradiators in operational mosquito SIT programmes.
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- 2024
27. Field Performance Assessment of Irradiated Aedes albopictus Males Through Mark–Release–Recapture Trials With Multiple Release Points
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Fabrizio Balestrino, Arianna Puggioli, Marco Malfacini, Alessandro Albieri, Marco Carrieri, Jeremy Bouyer, and Romeo Bellini
- Subjects
sterile insect technique (SIT) ,dispersal ,survival rate (S) ,normalized difference vegetation index (NDVI) ,sterile to wild male ratio (S/W) ,Biotechnology ,TP248.13-248.65 - Abstract
Mark–release–recapture (MRR) trials have been conducted in Northern Italy to evaluate the capacity of radio-substerilized Aedes albopictus males to survive, disperse, and engage in mating in the field. Two MRR sessions with the human landing collection method (HLC) were conducted with the simultaneous release of irradiated males marked with four different pigment colors. The survival and dispersal rates seem to be influenced more by environmental factors such as barriers, shading, and vegetation rather than weather parameters. In this study, we confirmed a positive linear relationship between the sterile adult male’s daily survival rate and the relative humidity previously reported in similar experimental conditions and a different dispersal capacity of the released A. albopictus males in low- (NDVI index 0.4)-vegetated areas. Consistent with previous studies, A. albopictus males have their maximal dispersion in the first days after release, while in the following days the males become more stationary. The similar field performances obtained with marked and unmarked radio-sterilized and untreated A. albopictus males on similar environments confirm the negligible effects of irradiation and marking procedures on the quality of the males released. The similar sterile to wild (S/W) male ratio measured in high- and low-vegetation areas in the release sites indicates a similar distribution pattern for the wild and the released sterile males. According to the MRR data collected, the Lincoln index estimated different A. albopictus mean population densities in the study areas equal to 7,000 and 3,000 male/ha, respectively.
- Published
- 2022
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28. Impact of Irradiation on Vector Competence of Aedes aegypti and Aedes albopictus (Diptera: Culicidae) for Dengue and Chikungunya Viruses
- Author
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Fabrizio Balestrino, Jérémy Bouyer, Marc J. B. Vreysen, and Eva Veronesi
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sterile insect technique ,dissemination ,transmission ,arbovirus ,RRT-PCR ,Biotechnology ,TP248.13-248.65 - Abstract
Effective control strategies against arthropod disease vectors are amongst the most powerful tools to prevent the spread of vector-borne diseases. The sterile insect technique (SIT) is an effective and sustainable autocidal control method that has recently shown effective population suppression against different Aedes vector species worldwide. The SIT approach for mosquito vectors requires the release of radio-sterilized male mosquitoes only, but currently available sex separation techniques cannot ensure the complete elimination of females resulting in short-term risk of increased biting rate and arboviral disease transmission. In this study, we compared for the first time the transmission of dengue and chikungunya viruses in Aedes aegypti and Aedes albopictus females exposed as pupae to an irradiation dose of 40 Gy. Females of both species were fed on blood spiked with either dengue or chikungunya viruses, and body parts were tested for virus presence by real-time RT-PCR at different time points. No differences were observed in the dissemination efficiency of the dengue virus in irradiated and unirradiated Ae. albopictus and Ae. aegypti mosquitoes. The dissemination of the chikungunya virus was higher in Ae. albopictus than in Ae. Aegypti, and irradiation increased the virus load in both species. However, we did not observe differences in the transmission efficiency for chikungunya (100%) and dengue (8–27%) between mosquito species, and irradiation did not impact transmissibility. Further implications of these results on the epidemiology of vector-borne diseases in the field are discussed.
- Published
- 2022
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29. How do you manage ANTICOagulant therapy in neurosurgery? The ANTICO survey of the Italian Society of Neurosurgery (SINCH)
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Alessandro Prior, Pietro Fiaschi, Corrado Iaccarino, Roberto Stefini, Denise Battaglini, Alberto Balestrino, Pasquale Anania, Enrico Prior, and Gianluigi Zona
- Subjects
Anticoagulant ,Reversal therapy ,Neurosurgery ,Traumatic brain injury ,Spontaneous intracerebral hemorrhage ,Neurology. Diseases of the nervous system ,RC346-429 - Abstract
Abstract Background Anticoagulant assumption is a concern in neurosurgical patient that implies a delicate balance between the risk of thromboembolism versus the risk of peri- and postoperative hemorrhage. Methods We performed a survey among 129 different neurosurgical departments in Italy to evaluate practice patterns regarding the management of neurosurgical patients taking anticoagulant drugs. Furthermore, we reviewed the available literature, with the aim of providing a comprehensive but practical summary of current recommendations. Results Our survey revealed that there is a lack of knowledge, mostly regarding the indication and the strategies of anticoagulant reversal in neurosurgical clinical practice. This may be due a lack of national and international guidelines for the care of anticoagulated neurosurgical patients, along with the fact that coagulation and hemostasis are not simple topics for a neurosurgeon. Conclusions To overcome this issue, establishment of hospital-wide policy concerning management of anticoagulated patients and developed in an interdisciplinary manner are strongly recommended.
- Published
- 2021
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30. Sterile Insect Technique (SIT) field trial targeting the suppression of Aedes albopictus in Greece
- Author
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Balatsos, Georgios, primary, Karras, Vasileios, additional, Puggioli, Arianna, additional, Balestrino, Fabrizio, additional, Bellini, Romeo, additional, Papachristos, Dimitrios P., additional, Milonas, Panagiotis G., additional, Papadopoulos, Nikos T., additional, Malfacini, Marco, additional, Carrieri, Marco, additional, Kapranas, Apostolos, additional, Mamai, Wadaka, additional, Mastronikolos, George, additional, Lytra, Ioanna, additional, Bouyer, Jérémy, additional, and Michaelakis, Antonios, additional
- Published
- 2024
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- View/download PDF
31. Motor and non-motor outcomes of subthalamic deep brain stimulation in a case of juvenile PARK-PINK1
- Author
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Roberta Balestrino, Claudia Ledda, Alberto Romagnolo, Marco Bozzali, Giovanni Giulietti, Elisa Montanaro, Mario Rizzone, Maurizio Zibetti, Carlo Alberto Artusi, and Leonardo Lopiano
- Subjects
Neurosciences. Biological psychiatry. Neuropsychiatry ,RC321-571 - Published
- 2021
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32. Herida penetrante de corazón por arma blanca
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Martín Miqueo Narancio and E Balestrino Vogt
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heridas ,corazón ,arma blanca ,Surgery ,RD1-811 - Abstract
Presentado en sesión de 27 de agosto de 1952
- Published
- 2020
33. How do you manage ANTICOagulant therapy in neurosurgery? The ANTICO survey of the Italian Society of Neurosurgery (SINCH)
- Author
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Prior, Alessandro, Fiaschi, Pietro, Iaccarino, Corrado, Stefini, Roberto, Battaglini, Denise, Balestrino, Alberto, Anania, Pasquale, Prior, Enrico, and Zona, Gianluigi
- Published
- 2021
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34. Lack of Epileptogenic Effects of the Creatine Precursor Guanidinoacetic Acid on Neuronal Cultures In Vitro
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Fabio Poggio, Martina Brofiga, Mariateresa Tedesco, Paolo Massobrio, Enrico Adriano, and Maurizio Balestrino
- Subjects
guanidinoacetic acid ,creatine ,GAMT deficiency ,seizures ,epilepsy ,electrophysiology ,Microbiology ,QR1-502 - Abstract
The creatine precursor Guanidinoacetic Acid (GAA) accumulates in the genetic deficiency of the GuanidinoAcetate Methyl Transferase (GAMT) enzyme and it is believed to cause the seizures that often occur in this condition. However, evidence that it is indeed epileptogenic is scarce and we previously found that it does not cause neuronal hyperexcitation in in vitro brain slices. Here, we used Micro-Electrode Arrays (MEAs) to further investigate the electrophysiological effects of its acute and chronic administration in the networks of cultured neurons, either neocortical or hippocampal. We found that: (1) GAA at the 1 µM concentration, comparable to its concentration in normal cerebrospinal fluid, does not modify any of the parameters we investigated in either neuronal type; (2) at the 10 µM concentration, very similar to that found in the GAMT deficiency, it did not affect any of the parameters we tested except the bursting rate of neocortical networks and the burst duration of hippocampal networks, both of which were decreased, a change pointing in a direction opposite to epileptogenesis; (3) at the very high and unphysiological 100 µM concentration, it caused a decrease in all parameters, a change that again goes in the direction opposite to epileptogenesis. Our results confirm that GAA is not epileptogenic.
- Published
- 2022
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35. Raman spectroscopy study of the interface structure in (CaCuO2)n/(SrTiO3)m superlattices
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Di Castro, D., Caramazza, S., Innocenti, D., Balestrino, G., Marini, C., Dore, P., and Postorino, P.
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Condensed Matter - Superconductivity ,Condensed Matter - Materials Science - Abstract
Raman spectra of CaCuO2/SrTiO3 superlattices show clear spectroscopic marker of two structures formed in CaCuO2 at the interface with SrTiO3. For non-superconducting superlattices, grown in low oxidizing atmosphere, the 425 cm-1 frequency of oxygen vibration in CuO2 planes is the same as for CCO films with infinite layer structure (planar Cu-O coordination). For superconducting superlattices grown in highly oxidizing atmosphere, a 60 cm-1 frequency shift to lower energy occurs. This is ascribed to a change from planar to pyramidal Cu-O coordination because of oxygen incorporation at the interface. Raman spectroscopy proves to be a powerful tool for interface structure investigation.
- Published
- 2013
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36. Interface reconstruction in superconducting CaCuO2/SrTiO3 superlattices: A hard x-ray photoelectron spectroscopy study
- Author
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Aruta, Carmela, Schlueter, Christoph, Lee, Tien-Lin, Di Castro, Daniele, Innocenti, Davide, Tebano, Antonello, Zegenhagen, Jorg, and Balestrino, Giuseppe
- Subjects
Condensed Matter - Strongly Correlated Electrons ,Condensed Matter - Materials Science - Abstract
Here we report about the interface reconstruction in the recently discovered superconducting artificial superlattices based on insulating CaCuO2 and SrTiO3 blocks. Hard x-ray photoelectron spectroscopy shows that the valence bands alignment prevents any electronic reconstruction by direct charge transfer between the two blocks. We demonstrate that the electrostatic built-in potential is suppressed by oxygen redistribution in the alkaline earth interface planes. By using highly oxidizing growth conditions, the oxygen coordination in the reconstructed interfaces may be increased, resulting in the hole doping of the cuprate block and thus in the appearance of superconductivity., Comment: 9 pages, 6 figures
- Published
- 2013
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37. Charge localization at the interface between La1-xSrxMnO3 and the infinite layers cuprate CaCuO2
- Author
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Yang, Nan, Di Castro, D., Aruta, C., Mazzoli, C., Minola, M., Brookes, N., Sala, M. Moretti, Prellier, W., Lebedev, O. I., Tebano, A., and Balestrino, G.
- Subjects
Condensed Matter - Superconductivity - Abstract
(CaCuO2)m/(La0.7Sr0.3MnO3)n superlattices, consisting of the infinite layers cuprate CaCuO2 and the optimally doped manganite La1-xSrxMnO3, were grown by pulsed laser deposition. The transport properties are dominated by the manganite block. X-Ray Absorption spectroscopy measurements show a clear evidence of an orbital reconstruction at the interface, ascribed to the hybridization between the Cu 3d3z2-r2 and the Mn 3d3z2-r2 orbitals via interface apical oxygen ions. Such a mechanism localizes holes at the interfaces, thus preventing charge transfer to the CaCuO2 block. Some charge (holes) transfer occurs toward the La0.7Sr0.3MnO3 block in strongly oxidized superlattices, contributing to the suppression of the magnetotransport properties., Comment: 20 pages, 6 figures
- Published
- 2012
- Full Text
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38. Aedes albopictus Sterile Male Production: Influence of Strains, Larval Diet and Mechanical Sexing Tools
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Marco Malfacini, Arianna Puggioli, Fabrizio Balestrino, Marco Carrieri, Maria Luisa Dindo, and Romeo Bellini
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sterile insect technique ,Aedes albopictus ,sex separation ,mass rearing ,Science - Abstract
The sterile insect technique (SIT) is a biologically based method of pest control, which relies on the mass production, sterilization, and release of sterile males of the target species. Since females can transmit viruses, it is important to develop a mass rearing system to produce a large number of males with a low presence of females. We evaluated the effects of different strains, larval diets and sexing tools on male productivity and residual female presence for the application of SIT against Aedes albopictus. Strains coming from Italy, Germany, Greece, and Montenegro, with different levels of colonization, were reared with three larval diets: IAEA-BY, BLP-B and SLP-BY. Developed pupae were sexed using two different mechanical methods: sieve or Fay-Morlan separator. The results proved that adoption of the Fay-Morlan separator increased the productivity and limited the female presence. The IAEA-BY diet showed the lowest female contamination. Strains with a high number of breeding generations showed a decreased productivity and an increased female presence. Increased female presence was found only in extensively reared strains and only when the sorting operation was conducted with sieves. We hypothesize that extensive colonization may determine a size reduction which limits the sexing tool efficiency itself.
- Published
- 2022
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39. High Tc superconductivity in superlattices of insulating oxides
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Di Castro, D., Salvato, M., Tebano, A., Innocenti, D., Aruta, C., Prellier, W., Lebedev, O. I., Ottaviani, I., Brookes, N. B., Minola, M., Sala, M. Moretti, Mazzoli, C., Medaglia, P. G., Ghiringhelli, G., Cirillo, L. Braicovich M., and Balestrino, G.
- Subjects
Condensed Matter - Superconductivity - Abstract
We report the occurrence of superconductivity, with maximum Tc = 40 K, in superlattices (SLs) based on two insulating oxides, namely CaCuO2 and SrTiO3. In these (CaCuO2)n/(SrTiO3)m SLs, the CuO2 planes belong only to CaCuO2 block, which is an antiferromagnetic insulator. Superconductivity, confined within few unit cells at the CaCuO2/SrTiO3 interface, shows up only when the SLs are grown in a highly oxidizing atmosphere, because of extra oxygen ions entering at the interfaces. Evidence is reported that the hole doping of the CuO2 planes is obtained by charge transfer from the interface layers, which act as charge reservoir., Comment: 18 pages, 8 figures
- Published
- 2011
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40. Effect of cage size on Aedes albopictus wing length, survival and egg production
- Author
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Dubravka Pudar, Arianna Puggioli, Fabrizio Balestrino, Victoria Sy, Marco Carrieri, Romeo Bellini, and Dušan Petrić
- Subjects
Sterile insect technique ,Mosquito mass-rearing ,Adult cage size ,Colonization ,Space optimization ,Science (General) ,Q1-390 ,Social sciences (General) ,H1-99 - Abstract
Background: Aedes albopictus is currently the most widespread invasive mosquito species in the world. It has paramount medical importance since females are efficient vectors of important viruses affecting humans. The development of alternative control strategies to complement control measures has become an imperative and involves the Sterile Insect Technique (SIT). Research to improve the productivity of mass-rearing, as well as the quality of mass-reared males is of essential importance for the success of SIT. Methods: This study compared the influence of three differently sized cages for Ae. albopictus mass-rearing on wing length, adult survival and egg production during 20 generations of colonization. Plexiglas cages of 40x40x40 cm (C1), 100 × 20 × 100 cm (C2) and 100 × 65 × 100 cm (C3) were loaded with equal adult density, and sex ratio of 1:1. An open source image processing and analysis programme (ImageJ) was used for the wing measurement and egg counting. Results: In all tested cages, we identified two periods separated by the generation showing the minimum value of each considered parameter (wing length, adult survival and egg production). The wing length and adult survival passed through the phases of initial decrease to about intermediate colonization time, and increased afterwards. Fecundity was steady during the first period and increased in the second one. Cage C1 demonstrated not only the best values for all parameters but also the smallest decrease in the initial phase. Recovering of the caged mosquitoes in the second half of the study was higher in cages C1 and C2, than in C3. Conclusions: C1 provided the least negative selection pressure on wing length, adult survival and egg production for reared Ae. albopictus. Anyhow, since maximising mosquito density by exploiting the minimum space is a priority in mosquito mass-rearing, C2 might be a better choice for better fitting the space of mass-rearing rooms.
- Published
- 2021
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41. Energy and symmetry of $dd$ excitations in undoped layered cuprates measured by Cu $L_3$ resonant inelastic x-ray scattering
- Author
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Sala, M. Moretti, Bisogni, V., Aruta, C., Balestrino, G., Berger, H., Brookes, N. B., de Luca, G. M., Castro, D. Di., Grioni, M., Guarise, M., Medaglia, P. G., Granozio, F. Miletto, Minola, M., Perna, P., Radovic, M., Salluzzo, M., Schmitt, T., Zhou, K. J., Braicovich, L., and Ghiringhelli, G.
- Subjects
Condensed Matter - Superconductivity - Abstract
We measured high resolution Cu $L_3$ edge resonant inelastic x-ray scattering (RIXS) of the undoped cuprates La$_2$CuO$_4$, Sr$_2$CuO$_2$Cl$_2$, CaCuO$_2$ and NdBa$_2$Cu$_3$O$_6$. The dominant spectral features were assigned to $dd$ excitations and we extensively studied their polarization and scattering geometry dependence. In a pure ionic picture, we calculated the theoretical cross sections for those excitations and used them to fit the experimental data with excellent agreement. By doing so, we were able to determine the energy and symmetry of Cu-3$d$ states for the four systems with unprecedented accuracy and confidence. The values of the effective parameters could be obtained for the single ion crystal field model but not for a simple two-dimensional cluster model. The firm experimental assessment of $dd$ excitation energies carries important consequences for the physics of high $T_c$ superconductors. On one hand, having found that the minimum energy of orbital excitation is always $\geq 1.4$ eV, i.e., well above the mid-infrared spectral range, leaves to magnetic excitations (up to 300 meV) a major role in Cooper pairing in cuprates. On the other hand, it has become possible to study quantitatively the effective influence of $dd$ excitations on the superconducting gap in cuprates., Comment: 22 pages, 11 figures, 1 table
- Published
- 2010
- Full Text
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42. Orbital occupation, atomic moments and magnetic ordering at interfaces of manganite thin films
- Author
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Aruta, C., Ghiringhelli, G., Bisogni, V., Braicovich, L., Brookes, N. B., Tebano, A., and Balestrino, G.
- Subjects
Condensed Matter - Strongly Correlated Electrons ,Condensed Matter - Materials Science - Abstract
We have performed x-ray linear and circular magnetic dichroism experiments at the Mn L2,3-edge of the La0.7Sr0.3MnO3 ultra thin films. Our measurements show that the antiferromagnetic (AF) insulating phase is stabilized by the interfacial rearrangement of the Mn 3d orbitals, despite the relevant magnetostriction anisotropic effect on the double-exchange ferromagnetic (FM) metallic phase. As a consequence, the Mn atomic magnetic moment orientation and how it reacts to strain differ in the FM and AF phases. In some cases a FM insulating (FMI) phase adds to the AF and FM. Its peculiar magnetic properties include in-plane magnetic anisotropy and partial release of the orbital moment quenching. Nevertheless the FMI phase appears little coupled to the other ones., Comment: 18 pages, 7 figures
- Published
- 2009
43. Editorial: Biomarkers of non-motor symptoms in Parkinson's disease and parkinsonisms
- Author
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Filippi, Massimo, primary, Balestrino, Roberta, additional, and Agosta, Federica, additional
- Published
- 2023
- Full Text
- View/download PDF
44. Examining the Veterinary Electronic Antimicrobial Prescriptions for Dogs and Cats in the Campania Region, Italy: Corrective Strategies Are Imperative
- Author
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Foglia Manzillo, Valentina, primary, Peruzy, Maria Francesca, additional, Gizzarelli, Manuela, additional, Izzo, Berardino, additional, Sarnelli, Paolo, additional, Carrella, Antonio, additional, Vinciguerra, Giuseppina, additional, Chirollo, Claudia, additional, Ben Fayala, Nour El Houda, additional, Balestrino, Ines, additional, and Oliva, Gaetano, additional
- Published
- 2023
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45. Effect of 2 sex-sorting time schedules on SIT facility management
- Author
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Malfacini, Marco, primary, Puggioli, Arianna, additional, Balestrino, Fabrizio, additional, Carrieri, Marco, additional, Dindo, Maria Luisa, additional, and Bellini, Romeo, additional
- Published
- 2023
- Full Text
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46. Dispersing bimagnons and doping induced bimagnon-charge modes in superconducting cuprates
- Author
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Braicovich, L., Ament, L. J. P., Bisogni, V., Forte, F., Aruta, C., Balestrino, G., Brookes, N. B., De Luca, G. M., Medaglia, P. G., Granozio, F. Miletto, Radovic, M., Salluzzo, M., Brink, J. van den, and Ghiringhelli, G.
- Subjects
Condensed Matter - Strongly Correlated Electrons ,Condensed Matter - Materials Science - Abstract
In the early days of high temperature superconductivity it was already recognized that magnetic properties of these materials are intimately related to the superconducting ones . When doped, the long-range ordered antiferromagnetic background of pristine copper-oxide insulators melts away and makes room for a spin liquid and superconductivity. By resonant inelastic x-ray scattering (RIXS) in the soft regime we probe the hitherto inaccessible dynamical multiple-spin correlations of the magnetic background in a series of parent compounds and in high Tc materials [NCCO (Nd2-xCexCuO4) and LSCO (La2-xSrxCuO4)]. High resolution measurements allows the clear observation of dispersing bimagnon excitations. In the undoped compounds the theory, fits the data on these coherent spin excitations without free parameters. In nearly optimally doped LSCO we observe the appearance of a new collective excitation at an energy of 250 +/- 60 meV having the signature of a coupled bimagnon-charge mode. It has a strongly reduced dispersion and lies in a so far unexplored region of momentum and energy space in the mid-infrared., Comment: 16 pages, 3 figures embedded
- Published
- 2008
47. Observation of Spin Fluctuations in a High-Tc Parent Compound Using Resonant Inelastic X-ray Scattering
- Author
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Freelon, B., Medaglia, P. G., Tebano, A., Balestrino, G., Okada, K., Kotani, A., Vernay, F., Devereaux, T. P., Glans, P. A., Learmonth, T., Smith, K. E., Kilcoyne, A. L. D., Rude, B., Furtado, I., and Guo, J. -H.
- Subjects
Condensed Matter - Superconductivity - Abstract
We report the first observation of soft-x-ray scattering from spin fluctuations in a high-Tc parent compound. An antiferromagnetic charge transfer insulator, CaCuO2, was irradiated by Cu M-edge soft x-rays. Ultra-high resolution measurements of scattered intensity revealed magnon-magnon excitations, due to spin exchange scattering, as low-energy loss features. The process is analogous to optical Raman scattering. The spectra provide the first measurement of the two-magnon excitation energy and the antiferromagnetic exchange parameter in infinite-layer CaCuO2. The results reveal resonant inelastic soft x-ray scattering as a novel probe of the spin dynamics in cuprates., Comment: 11 pages, 5 figures
- Published
- 2008
48. Optimization of Aedes albopictus (Diptera: Culicidae) Mass Rearing through Cost-Effective Larval Feeding
- Author
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Mihaela Kavran, Arianna Puggioli, Sara Šiljegović, Dušan Čanadžić, Nikola Laćarac, Mina Rakita, Aleksandra Ignjatović Ćupina, Fabrizio Balestrino, Dušan Petrić, and Romeo Bellini
- Subjects
Aedes albopictus ,SIT ,larval diet ,mass rearing ,IAEA-BY ,BCWPRL ,Science - Abstract
Aedes (Stegomyia) albopictus (Skuse, 1895) is an invasive important medical and veterinary pest species. The sterile insect technique (SIT) involves the mass rearing of males, and their sterilization and release into the habitat to compete with wild males. Our research objective was to compare the effectiveness of three larval diet recipes (IAEA-BY, BCWPRL, and MIX-14) in the laboratory rearing of Ae. albopictus males to evaluate the available economical feeding alternatives. The separation of sexes was done in the pupal stage by sieving. Reared males were tested for flight capacity and longevity. The application of the BCWPRL diet resulted in a higher portion of sieved male pupae than females, but the development of males was the slowest, and the number of obtained males (pupae and adults) was lower compared to the other two diets. The adult mean survival time was the highest in males fed with MIX-14 and the lowest in males fed with IAEA-BY. Males fed by IAEA-BY also demonstrated higher initial mortality in the adult stage. The diets BCWPRL and MIX-14 are economically more convenient than IAEA-BY (2.28 and 5.30 times cheaper, respectively). The cheapest diet, MIX-14, might represent a candidate for replacing the effective but still expensive IAEA-BY larval diet, providing lower costs of sterile male production.
- Published
- 2022
- Full Text
- View/download PDF
49. Exploring protandry and pupal size selection for Aedes albopictus sex separation
- Author
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Romeo Bellini, Arianna Puggioli, Fabrizio Balestrino, Marco Carrieri, and Sandra Urbanelli
- Subjects
SIT ,Sterile male ,Genetic control ,Mosquito ,Dimorphism ,Infectious and parasitic diseases ,RC109-216 - Abstract
Abstract Background We explored the possibility to improve male/female separation (sexing) in Aedes albopictus by selection of two strains, one toward increasing sex dimorphism and another toward increasing protandry. In the laboratory we selected and crossed small males with large females to exploit dimorphism, and early pupating males with late pupating females to exploit protandry. Results While selection for enhanced dimorphism was not a profitable character, the selection for enhanced protandry up to F10 produced significant improvement in the time interval between male and female pupation. By collecting the pupae at 24 h from the beginning of pupation, without any sieving operation, we obtained about 28.50% of pupae (calculated in relation to the estimated initial number of first instar larvae used), vs 26.49% we had in the control strain, and, more interestingly, when checking the sex ratio of these pupae we observed a presence of females of 0.92% vs 23.02% in the control strain. We also modified our egg hatching protocol from the previous standard procedure that required keeping the eggs in the glass hatching container overnight (for about 14-16 h) to a new protocol where eggs are kept in the hatching container for 4 h in order to obtain more synchronized larvae. This was possible without any reduction in the egg hatching rate. Conclusions In Aedes albopictus it is possible to develop hyper-protandric strains useful to produce male pupae without applying other sexing systems. This represents a considerable achievement assisting the Sterile Insect Technique application, allowing improvement of the current sexing method based on mechanical separation. More investigations are under way in order to further enhance the male productivity capacity of the strain and to determine whether the selection has any impact on the male fitness parameters.
- Published
- 2018
- Full Text
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50. Evidence of orbital reconstruction at interfaces in La0.67Sr0.33MnO3 films
- Author
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Tebano, A, Aruta, C., Sanna, S., Medaglia, P. G., Balestrino, G., Sidorenko, A. A., De Renzi, R., Ghiringhelli, G., Braicovich, L., Bisogni, V., and Brookes, N. B.
- Subjects
Condensed Matter - Strongly Correlated Electrons ,Condensed Matter - Materials Science - Abstract
Electronic properties of transition metal oxides at interfaces are influenced by strain, electric polarization and oxygen diffusion. Linear dichroism (LD) x-ray absorption, diffraction, transport and magnetization on thin La0.7Sr0.3MnO3 films, allow identification of a peculiar universal interface effect. We report the LD signature of preferential 3d-eg(3z2-r2) occupation at the interface, suppressing the double exchange mechanism. This surface orbital reconstruction is opposite of that favored by residual strain and independent of dipolar fields, chemical nature of the substrate and capping., Comment: 13 pages, 5 figures
- Published
- 2007
- Full Text
- View/download PDF
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