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Air-core fiber distribution of hybrid vector vortex-polarization entangled states

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Advanced Photonics 2019年第4期1卷 42-50页

作者： Daniele Cozzolino Emanuele Polino Mauro Valeri Gonzalo Carvacho Davide Bacco NicoloSpagnolo Leif K.Oxenløwe Fabio Sciarrino Technical University of Denmark CoE SPOCDepartment of Photonics EngineeringLyngbyDenmark Sapienza Universitàdi Roma Dipartimento di FisicaRomaItaly consiglio nazionale delle ricerche Istituto dei Sistemi ComplessiRomaItaly

Entanglement distribution between distant parties is one of the most important and challenging tasks in quantum *** of photonic entangled states using optical fiber links is a fundamental building block toward quantum *** the different degrees of freedom,orbital angular momentum(OAM)is one of the most promising due to its natural capability to encode high dimensional quantum *** experimentally demonstrate fiber distribution of hybrid polarization-vector vortex entangled photon *** this end,we exploit a recently developed air-core fiber that supports OAM *** fidelity distribution of the entangled states is demonstrated by performing quantum state tomography in the polarization-OAM Hilbert space after fiber propagation and by violations of Bell inequalities and multipartite entanglement *** results open new scenarios for quantum applications where correlated complex states can be transmitted by exploiting the vectorial nature of light.

关键词： orbital angular momentum quantum communication structured light multimode fiber multipartite entanglement

Experimental characterization and CFD simulation of gas maldistribution in turbulent fluidization of Group A particles

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Particuology 2023年第11期82卷 192-203页

作者： Maurizio Troiano Benjamin Amblard Sina Tebianian Roberto Solimene Piero Salatino Thierry Gauthier Dipartimento di Ingegneria Chimica dei Materiali e della Produzione IndustrialeUniversitàdegli Studi di Napoli Federico IIPiazzale Vincenzo Tecchio 8080125NapoliItaly IFP Energies nouvelles Rond-point de l'échangeur de Solaize BP 369360SolaizeFrance Istituto di Scienze e Tecnologie per l’Energia e la MobilitàSostenibili(STEMS) Consiglio Nazionale delle Ricerche(CNR)Piazzale Vincenzo Tecchio 8080125NapoliItaly

The study presented hereby investigates experimentally and with CFD simulations the gas distribution effect on the hydrodynamic of a Geldart Group A turbulent fluidized bed. Experiments were carried out on a cold flow fluidized bed column with an even and uneven gas distribution. Local solid volume fraction profiles were measured using optical probes at different bed heights and along two radial directions. Optical probe measurements allow catching a clear hydrodynamic difference between both even and uneven gas distributions. These results were then used to assess CFD simulations with the code Barracuda^(TM) (MP-PIC approach). It is noteworthy that the choice of drag correlation and boundary conditions strongly influences the agreement between the experimental and CFD results. Once the correct parameters are chosen, CFD simulations captured the effect of gas distribution changes.

关键词： Characterization of multiphase reactors Fluidized bed Turbulent Gas distribution Jet Optical probe CFD simulations

Factors influencing the drug release from calcium phosphate cements

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Bioactive Materials 2022年第1期7卷 341-363页

作者： Marco Fosca Julietta V.Rau Vuk Uskokovi Istituto di Struttura della Materia Consiglio Nazionale delle Ricerche(ISM-CNR)Via del Fosso del Cavaliere 10000133RomeItaly I.M.Sechenov First Moscow State Medical University Institute of PharmacyDepartment of AnalyticalPhysical and Colloid ChemistryTrubetskaya 8build.2119991MoscowRussia Advanced Materials and Nanobiotechnology Laboratory TardigradeNano LLCIrvineCA 92604United States

Thanks to their biocompatibility,biodegradability,injectability and self-setting properties,calcium phosphate cements(CPCs)have been the most economical and effective biomaterials of choice for use as bone void *** have also been extensively used as drug delivery carriers owing to their ability to provide for a steady release of various organic molecules aiding the regeneration of defective bone,including primarily antibiotics and growth *** review provides a systematic compilation of studies that reported on the controlled release of drugs from CPCs in the last 25 *** chemical,compositional and microstructural characteristics of these systems through which the control of the release rates and mechanisms could be achieved have been *** doing so,the effects of(i)the chemistry of the matrix,(ii)porosity,(iii)additives,(iv)drug types,(v)drug concentrations,(vi)drug loading methods and(vii)release media have been distinguished and discussed *** specificities of in vivo release of drugs from CPCs have been reviewed,*** the kinetic and mechanistic correlations between the CPC properties and the drug release is a prerequisite for the design of bone void fillers with drug release profiles precisely tailored to the application area and the clinical *** goal of this review has been to shed light on these fundamental correlations.

关键词： Calcium phosphate cements Drug release Release rate Antibiotics release Bone fillers

Seamless integration of bioelectronic interface in an animal model via in vivo polymerization of conjugated oligomers

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Bioactive Materials 2022年第4期7卷 107-116页

作者： Giuseppina Tommasini Gwennael Dufil Federica Fardella Xenofon Strakosas Eugenio Fergola Tobias Abrahamsson David Bliman Roger Olsson Magnus Berggren Angela Tino Eleni Stavrinidou Claudia Tortiglione Istituto di Scienze Applicate e Sistemi Intelligenti“E.Caianiello” Consiglio Nazionale delle RicercheVia Campi Flegrei 3480078PozzuoliItaly Laboratory of Organic Electronics Department of Science and TechnologyLinkoping UniversitySE-60174NorrkopingSweden Department of Chemistry and Molecular Biology University of GothenburgSE-40530GothenburgSweden Chemical Biology&Therapeutics Department of Experimental Medical ScienceLund UniversitySE-22184LundSweden

Leveraging the biocatalytic machinery of living organisms for fabricating functional bioelectronic interfaces,in vivo,defines a new class of micro-biohybrids enabling the seamless integration of technology with living biological ***,we have demonstrated the in vivo polymerization of conjugated oligomers forming conductors within the structures of ***,we expand this concept by reporting that Hydra,an invertebrate animal,polymerizes the conjugated oligomer ETE-S both within cells that expresses peroxidase activity and within the adhesive material that is secreted to promote underwater surface *** resulting conjugated polymer forms electronically conducting and electrochemically activeμm-sized domains,which are inter-connected resulting in percolative conduction pathways extending beyond 100μm,that are fully integrated within the Hydra tissue and the secreted ***,the introduction and in vivo polymerization of ETE-S can be used as a biochemical marker to follow the dynamics of Hydra budding(reproduction)and *** work paves the way for well-defined self-organized electronics in animal tissue to modulate biological functions and in vivo biofabrication of hybrid functional materials and devices.

关键词： In vivo polymerization Bioelectronics interfaces Conjugated oligomers Model organism

Modification of titanium surface via Ag-,Sr-and Si-containing micro-arc calcium phosphate coating

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Bioactive Materials 2019年第1期4卷 224-235页

作者： Mariya B.Sedelnikova Ekaterina G.Komarova Yurii P.Sharkeev Anna V.Ugodchikova Tatiana V.Tolkacheva Julietta V.Rau Evgeny E.Buyko Vladimir V.Ivanov Vladimir V.Sheikin Institute of Strength Physics and Materials Science of SB RAS Academicheskii Prospect 2/4Tomsk634055Russia National Research Tomsk Polytechnic University Lenina Prospect 30Tomsk634050Russia Istituto di Struttura della Materia Consiglio Nazionale delle Ricerche(ISM-CNR)Via del Fosso del Cavaliere 10000133 RomaItaly Siberian State Medical University Moscovskii Tract 2Tomsk634050Russia

The current research is devoted to the study of the modification of the titanium implants by the micro-arc oxidation with bioactive calcium phosphate coatings containing Ag or Sr and Si *** coatings’microstructure,phase composition,morphology,physicochemical and biological properties were examined by scanning electron microscopy(SEM),transmission electron microscopy(TEM),energy-dispersive X-ray spectroscopy(EDX)and X-ray diffraction(XRD).Ag-containing and Sr-Si-incorporated coatings were formed in alkaline and acid electrolytes,*** formation of the coatings occurred at different ranges of the applied voltages,which led to the significant difference in the coatings *** trace elements Ag,Sr and Si participated intensively in the plasma-chemical reactions of the micro-arc coatings ***-containing coatings demonstrated strong antibacterial effect against Staphylococcus aureus AТСС*** in vitro test with 3T3-L1 fibroblasts showed no cytotoxicity appearance on Sr-Si-incorporated coatings.

关键词： Trace elements Biocoatings Micro-arc oxidation Titanium substrate Antibacterial activity

Towards efficient near-infrared fluorescent organic light-emitting diodes

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Light(Science & Applications) 2021年第2期10卷 166-175页

作者： Alessandro Minotto Ibrahim Bulut Alexandras G.Rapidis Giuseppe Carnicella Maddalena Patrini Eugenio Lunedei Harry L.Andersonand Franco Cacialli Department of Physics and Astronomy and London Centre for Nanotechnology University College LondonLondon WC1E 6BTUK Department of Chemistry Chemistry Research LaboratoryUniversity of OxfordMansfield RoadOxford OX13TAUK Dipartimento di Fisica University degli Studi di PaviaVia A.Bassi6Pavia 27100Italy. CNR-ISMN Istituto per lo Studio dei Materiali NanostrutturatiConsiglio Nazionale delle RicercheVia P Gobetti 101Bologna 40129Italy

The energy gap law(E_(G)-law)and aggregation quenching are the main limitations to overcome in the design of near-infrared(NIR)organic ***,we achieve unprecedented results by synergistically addressing both of these ***,we propose porphyrin oligomers with increasing length to attenuate the effects of the E_(G)-law by suppressing the non-radiative rate growth,and to increase the radiative rate via enhancement of the oscillator ***,we design side chains to suppress aggregation *** find that the logarithmic rate of variation in the non-radiative rate vs.E_(G)is suppressed by an order of magnitude with respect to previous studies,and we complement this breakthrough by demonstrating organic light-emitting diodes with an average external quantum efficiency of-1.1%,which is very promising for a heavy-metal-free 850 nm *** also present a novel quantitative model of the internal quantum efficiency for active layers supporting triplet-to-singlet *** results provide a general strategy for designing high-luminance NIR emitters.

关键词： radiative limitations aggregation

The Arabidopsis COP9 SIGNALOSOME INTERACTING F-BOX KELCH 1 Protein Forms an SCF Ubiquitin Ligase and Regulates Hypocotyl Elongation

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Molecular Plant 2013年第5期6卷 1616-1629页

作者： Anna Franciosini Benedetta Lombardi Silvia lafrate Valeria.Pecce Giovanni Mele Leonardo Lupacchini Gianmarco Rinaldi Youichi Kondou Giuliana Gusmaroli Shiori Aki Tomohiko Tsuge Xing-Wang Deng Minami Matsui Paola Vittorioso Paolo Costantin Giovanna Serino Dipartimento di Biologia e Biotecnologie Sapienza Universita di Roma Italy Istituto di Biologia e Biotecnologia Agraria Consiglio Nazionale delle Ricerche Italy RIKEN Plant Science Center Yokohama Japan Department of Molecular Cellular and Development Biology Yale University New Haven CT USA Present address: Department of Biology University of South Carolina Beaufort Bluff'ton AC USA Molecular Biology Laboratory Institute for Chemical Research Kyoto University Japan The New York Botanical Garden Bronx NY USA

The regulation of protein turnover by the ubiquitin proteasome system （UPS） is a major posttranslational mechanism in eukaryotes. One of the key components of the UPS, the COP9 signalosome （CSN）, regulates ＇cullin-ring＇ E3 ubiquitin ligases. In plants, CSN participates in diverse cellular and developmental processes, ranging from light signaling to cell cycle control. In this work, we isolated a new plant-specific CSN-interacting F-box protein, which we denominated CFK1 （COP9 INTERACTING F-BOX KELCH 1）. We show that, in Arabidopsis thaliana, CFK1 is a component of a functional ubiquitin ligase complex. We also show that CFK1 stability is regulated by CSN and by proteasome-dependent proteoly- sis, and that light induces accumulation of the CFK1 transcript in the hypocotyl. Analysis of CFK1 knockdown, mutant, and overexpressing seedlings indicates that CFK1 promotes hypocotyl elongation by increasing cell size. Reduction of CSN levels enhances the short hypocotyl phenotype of CFKl-depleted seedlings, while complete loss of CSN activity sup- presses the Iong-hypocotyl phenotype of CFKl-overexpressing seedlings. We propose that CFK1 （and its regulation by CSN） is a novel component of the cellular mechanisms controlling hypocotyl elongation.

关键词： Arabidopsis thaliana ubiquitin COP9 signalosome proteasome F-box protein hypocotyl elongation seed-ling development.

Magnetically-coated silica nanospheres for dual-mode imaging at low ultrasound frequency

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World Journal of Radiology 2013年第11期5卷 411-420页

作者： Fernanda Chiriacò Giulia Soloperto Antonio Greco Francesco Conversano Andrea Ragusa Luca Menichetti Sergio Casciaro consiglio nazionale delle ricerche Istituto di Fisiologia Clinica (CNR-IFC) c/oCampus Ecotekne via per Monteroni National Research Council Istituto di Nanoscienze National Research Council Institute of Clinical Physiology

AIM: To experimentally investigate the acoustical behavior of different dual-mode nanosized contrast agents(NPCAs) for echographic medical imaging at low ultrasound(US) frequency. METHODS: We synthesized three different nanosized structures:(1) Pure silica nanospheres(SiNSs);(2) FePt-iron oxide(FePt-IO)-coated SiNSs; and(3) IOcoated SiNSs, employing three different diameter of SiNS-core(160, 330 and 660 nm). Tissue mimicking phantoms made of agarose gel solution containing 5 mg of different NPCAs in 2 mL-Eppendorf tubes, were insonified by a commercial echographic system at three different low US pulse values(2.5, 3.5 and 4.5 MHz). The raw radiofrequency signal, backscattered from each considered NPCA containing sample, has been processed in order to calculate the US average backscatter intensity and compare the acoustic behavior of the different NPCA types. RESULTS: The highest US contrast was exhibited by pure SiNSs; FePt-IO-coated SiNSs acoustical behavior followed a similar trend of pure SiNSs with a slight difference in terms of brightness values. The acoustic response of the examined NPCAs resulted function of both SiNS diameter and US frequency. Specifically, higher US frequencies determined higher value of the backscatter for a given SiNS diameter. Frequencydependent enhancement was marked for pure SiNSs and became less remarkable for FePt-IO-coated SiNSs, whereas IO-coated SiNSs resulted almost unaffected by such frequency variations. Pure and FePt-IO-coated SiNSs evidenced an image backscatter increasing with the diameter up to 330 nm. Conversely, among the types of NPCA tested, IO-coated SiNSs showed the lowest acoustical response for each synthesized diameter and employed US frequency, although a diameter-dependent raising trend was evidenced. CONCLUSION: The US characterization of magnetically covered SiNS shows that FePt-IO, rather than IO, was the best magnetic coating for realizing NPCAs suitable for dual mode imaging of deep organs, combining US and

关键词： Ultrasound Magnetic resonance Nanocomposite Dual-mode Imaging Contrast agent Diagnostic imaging

Free triiodothyronine level correlates with statin responsiveness in acute myocardial infarction

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Journal of Geriatric Cardiology 2018年第4期15卷 290-297页

作者： Wen-Yao WANG Kuo ZHANG Wei ZHAO A. Martin Gerdes Giorgio Iervasi Yi-Da TANG Departments of Cardiology State Key Laboratory of Cardiovascular Disease Fuwai Hospital National Center for Cardiovascular Diseases Chinese Academy of Medical Sciences and Peking Union Medical College Beijing China Fuwai Hospital National Center for Cardiovascular Diseases Chinese Academy of Medical Sciences and Peking Union Medical College Beijing China Department of Biomedtcal Sciences New York Institute of Technology-College of Osteopathic Medicine Northern Blvd. Old Westbury New York USA Clinical Physiology Institute Consiglio Nazionale delle Ricerche (CNR) Pisa Italy

Background Although thyroid hormone （TH） has important effects on lipid metabolism, the relationship between TH and statin responsiveness has never been investigated. We hypothesize that TH plays an important role in statin responsiveness in patients with acute myocardial infarction （AMI）. Methods Consecutive 1091 hospitalized AMI patients in Fuwai hospital （Beijing, China） were enrolled into this current study. The study population was divided into three groups based on the intensity of statin treatment： low-intensity （n = 221）, moderate-intensity （n = 712） and high-intensity （n = 158）. Lipid levels were measured after statin therapy lasting for 10-14 days. The association between TH, lipid profile levels and achievement of low-density lipoprotein cholesterol （LDL-C） lowering goals was explored in patients with AMI on statin therapy. Results By general linear analysis, a significant linear trend between free triiodothyronine （FT3） and LDL-C level （linear coefficient r = -0.082, P = 0.001） and FT3 and total cholesterol （TC） level （r = -0.105, P = 0.031） was observed in the moderate-intensity statin group. A more apparent linear trend was detected in the high-intensity statin group （for LDL-C： r = -0.113, P = 0.005; for TC： r = -0.172, P = 0.029, respectively）. However, no significant correlation was observed in the low-intensity statin group. Compared with the low-FT3 group （defined as FT3 〈 1.79 pg/mL）, the OR （95% CI） for attaining a LDL-C 〈 3.0mmol/L was found to be 2.217 （1.001–4.839） in the higher FT3 group （〉 2.95 pg/mL）. The OR （95% CI） for attaining the more intensive goal （LDL-C 〈 1.8mmol/L） was 2.836 （1.014–5.182）. Conclusions Our study reveals that variation in FT3 levels is related to the cholesterol-lowering responsiveness of statins in AMI patients. These findings suggest that low FT3 may be a factor responsible for lack of LDL-C goal attainment and patients’ poor responsiveness to statin treatment.

关键词： Acute myocardial infarction Free triiodothyronine Hypothyroid Statin