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A visible light-driven plasmonic photocatalyst

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Light(Science & Applications) 2014年第1期3卷 349-354页

作者： francesca Pincella Katsuhiro Isozaki Kazushi Miki Polymer Materials Unit National Institute for Materials ScienceIbaraki 305-0044Japan Department of Pure and Applied Sciences University of TsukubaIbaraki 305-8571Japan Current address:International Research Center for Elements Science Institute for Chemical ResearchKyoto UniversityKyoto 611-0011Japan

We demonstrate a bottom-up approach to fabricating a visible light-driven titania photocatalyst device bearing an embeddedtwo-dimensional (2D) array of gold nanoparticles (AuNPs) as a near-field light-generating layer. The device is a layered structureprepared by depositing a 2D array of AuNPs on a transparent conductive substrate (10 nm indium tin oxide (ITO) layer on quartz),coating the 2D array of AuNPs with a monolayer of trimethoxyoctylsilane (TMOS), and depositing titania nanocrystals on the anchoringmolecule (TMOS) layer. The visible light activity of the device was tested using photocatalytic degradation of methylene blue (MB) byilluminating the device with visible light (700 nm light) and ultraviolet (UV) light (250–380 nm). The localized surface plasmonresonance peak of the 36 nm AuNP 2D array is around 700 nm with a full-width at half-maximum of 350 nm. In comparison with othercontrol samples, the device showed the highest photocatalytic activity with visible irradiation, which was 1.7 times higher than that oftitania with UV irradiation. The origin of the visible light activity was confirmed by both quadratic incident light power dependency andaction spectrum to be plasmon-induced (near-field enhancement by AuNPs) two-photon absorption.

关键词： gold nanoparticles near-field light plasmonics two-photon absorption visible photocatalysis

An Experimental Investigation of the Dissipation Mechanisms in the Suction Side Boundary Layer of a Turbine Blade

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Journal of Thermal Science 2008年第4期17卷 289-297页

作者： francesca Satta Daniele Simoni Marina Ubaldi Pietro Zunino Dipartimento di Macchine Sistemi Energetici e Trasporti-Università di Genova

The present work is part of an extensive experimental activity carried out by the authors in recent years aimed at investigating the boundary layer transition phenomenon in turbine blades. The large scale of the cascade and the use of advanced LDV instrumentation and precision probe traversing mechanism resulted in high degree of spatial resolution and high accuracy of measurements. The main dissipation mechanism determining the profile losses in turbomachinery blades is the work of deformation of the mean motion within the boundary layer operated by both viscous and turbulent shear stresses. In the present paper, the local viscous and turbulent deformation works have been directly evaluated from the detailed measurements of boundary layer mean velocity and Reynolds shear stress. The results show the distributions and the relative importance of the viscous and turbulent contributions to the loss production, in relation with the boundary layer states occurring along the turbine profile.

关键词： Axial flow turbines Profile boundary layer Energy dissipation mechanism Boundary layer transition Laser Doppler measurements.

Relationship between MRI pertusion and clinical severity in multiple sclerosis

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Neural Regeneration Research 2020年第4期15卷 646-652页

作者： Maria Marcella Laganà Laura Pelizzari francesca Baglio IRCCS Fondazione Don Carlo Gnocchi

Perfusion alterations within several brain regions have been shown in multiple sclerosis patients using different magnetic resonance imaging(MRI)***,MRI-derived brain perfusion metrics have been investigated in association with multiple sclerosis phenotypes,physical disability,and cognitive ***,a review focused on these aspects is still *** aim was to review all the studies investigating the relationship between perfusion MRI and clinical severity during the last fifteen years to understand the clinical relevance of these *** differences among phenotypes were observed both with 1.5T and 3T scanners,with progressive multiple sclerosis presenting with lower perfusion values than relapsing-remitting multiple sclerosis ***,only 3T scanners showed a statistically significant *** results about the association between MRI-derived perfusion metrics and physical disability scores were ***,the majority of the studies showed that lower brain perfusion and longer transit time are associated with more severe physical disability and worse cognitive performances.

关键词： brain perfusion cerebral blood flow cognition disability magnetic resonance imaging MRI multiple sclerosis phenotypes progressive relapsing remitting

Full recycling of spent lithium ion batteries with production of core-shell nanowires//exfoliated graphite asymmetric supercapacitor

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Journal of Energy Chemistry 2021年第7期30卷 336-344页

作者： Pier Giorgio Schiavi Pietro Altimari Robertino Zanoni francesca Pagnanelli Department of Chemistry Sapienza University of RomePiazzale Aldo Moro n.500185 RomeItaly

A novel process is reported which produces an asymmetric supercapacitor through the complete recycling of end-of-life lithium ion *** electrodic powder recovered by industrial scale mechanical treatment of spent batteries was leached and the dissolved metals were precipitated as mixed metals *** battery-type positive electrodes were produced by electrodeposition into nanoporous alumina templates from the electrolytic baths prepared by dissolution of the precipitated *** impact of the different metals contained in the electrodic powder was evaluated by benchmarking the electrochemical performances of the recovered nanowires-based electrodes against electrodes produced by using high-purity *** of inactive Cu in the nanowires lowered the final capacitance of the electrodes while Ni showed a synergistic effect with cobalt providing a higher capacitance with respect to synthetic Co *** carbonaceous solid recovered after leaching was indepth characterized and tested as negative *** the chemical and electrochemical characterization indicate that the recovered graphite is characterized by the presence of oxygen functionalities introduced by the leaching *** has led to the obtainment of a recovered graphite characterized by an XPS C/O ratio,Raman spectrum and morphology close to literature reports for reduced graphene *** asymmetric supercapacitor assembled using the recovered nanowires-based positive electrodes and graphite as negative electrodes has shown a specific capacitance of 42 F g^(-1), computed including the whole weight of the positive electrode and recovered graphite,providing a maximum energy density of ~9 Wh kg^(-1) and a power density of 416 W kg^(-1) at 2.5 mA cm^(-2).

关键词： Lithium ion battery recyling Core-shell nanowires Supercapacitors Closed-loop recycling process

What we should know about portal vein thrombosis in cirrhotic patients:A changing perspective

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World Journal of Gastroenterology 2012年第36期18卷 5014-5020页

作者： francesca Romana Ponziani Maria Assunta Zocco Matteo Garcovich francesca D'Aversa Davide Roccarina Antonio Gasbarrini Internal Medicine and Gastroenterology Policlinico A.GemelliCatholic University of Romelargo A.Gemelli800168 RomeItaly

Portal vein thrombosis(PVT) is one of the most common complications occurring during the natural course of liver *** though PVT is often asymptomatic,the worsening of liver function,an unexpected episode of gastrointestinal bleeding or ascitic decompensation may be landmarks of PVT *** these clinical manifestations,it is debated whether PVT really has an impact on liver cirrhosis natural history or rather represents only one of its *** PVT development should not only be considered as a matter of impaired blood flow or pro-coagulation *** one hand,PVT seems a consequence of the worsening in portal vein outflow due to the increased hepatic resistance in cirrhotic *** the other hand,vascular microthrombosis secondary to necroinflammation may cause liver ischemia and infarction,with loss of hepatic tissue(parenchymal extinction) which is replaced by fibrotic ***,PVT might also be considered as the overt manifestation of the liver fibrosing process evolution and anticoagulant therapy may thus have microscopic indirect effects also on the progression of liver *** present,a connection between PVT development and the progression of liver fibrosis/cirrhosis has not yet been ***,it is not clear if PVT development may worsen cirrhotic patients' outcome by *** authors tried to assess liver transplant benefit in PVT cirrhotic patients but data are *** this review,we will try to answer these questions,providing a critical analysis of data reported in literature.

关键词： Portal vein thrombosis Liver cirrhosis Liver fibrosis Microthrombi Survival

Multifaceted relationship between diabetes and kidney diseases:Beyond diabete

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World Journal of Diabetes 2023年第10期14卷 1450-1462页

作者： Pasquale Esposito Daniela Picciotto francesca Cappadona francesca Costigliolo Elisa Russo Lucia Macciò francesca Viazzi Department of Internal Medicine and Medical Specialties(DiMI) University of GenoaGenoa 16132Italy Unit of Nephrology Dialysis and TransplantationIRCCS Ospedale Policlinico San MartinoGenoa 16132Italy

Diabetes mellitus is one of the most common causes of chronic kidney *** involvement in patients with diabetes has a wide spectrum of clinical presentations ranging from asymptomatic to overt proteinuria and kidney *** development of kidney disease in diabetes is associated with structural changes in multiple kidney compartments,such as the vascular system and *** alterations include thickening of the glomerular basement membrane,loss of podocytes,and segmental mesangiolysis,which may lead to microaneurysms and the development of pathognomonic Kimmelstiel-Wilson *** lesions directly related to diabetes,awareness of the possible coexistence of nondiabetic kidney disease in patients with diabetes is *** nondiabetic lesions include focal segmental glomerulosclerosis,IgA nephropathy,and other primary or secondary renal *** diagnosis of these conditions is crucial in guiding clinical management and therapeutic ***,the relationship between diabetes and the kidney is bidirectional;thus,new-onset diabetes may also occur as a complication of the treatment in patients with renal ***,we review the complex and multifaceted correlation between diabetes and kidney diseases and discuss clinical presentation and course,differential diagnosis,and therapeutic opportunities offered by novel drugs.

关键词： Diabetes Diabetic kidney disease Nondiabetic kidney disease Biomarkers Glomerular disease Kidney biopsy Sodium-glucose cotransporter-2 inhibitors

Performance Assessment of Low-Temperature A-CAES(Adiabatic Compressed Air Energy Storage)Plants

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Journal of Thermal Science 2022年第5期31卷 1279-1292页

作者： TOLA Vittorio MARCELLO francesca Carolina COCCO Daniele CAU Giorgio Department of Mechanical Chemical and Materials EngineeringUniversity of Cagliari09123 CagliariItaly

The widespread diffusion of renewable energy sources calls for the development of high-capacity energy storage systems as the A-CAES(Adiabatic Compressed Air Energy Storage)*** this framework,low temperature(100℃–200℃)A-CAES(LT-ACAES)systems can assume a key role,avoiding some critical issues connected to the operation of high temperature *** this paper,two different LT-ACAES configurations are *** two configurations are characterized by the same turbomachines and compressed air storage section,while differ in the TES section and its integration with the *** particular,the first configuration includes two separated cycles:the working fluid(air)cycle and the heat transfer fluid(HTF)*** heat exchangers connect the two cycles allowing to recover thermal energy from the compressors and to heat the compressed air at the turbine *** different HTFs were considered:air(case A)and thermal oil(case B).The second configuration is composed of only one cycle,where the operating fluid and the HTF are the same(air)and the TES section is composed of three different packed-bed thermal storage tanks(case C).The tanks directly recover the heat from the compressors and heat the air at each turbine inlet,avoiding the use of heat *** LT-ACAES systems were modelled and simulated using the ASPEN-Plus and the MATLAB-Simulink *** main aim of this study was the detailed analysis of the reciprocal influence between the turbomachinery and the TES system;furthermore,the performance evaluation of each plant was carried out assuming both on-design and off-design operating ***,the different configurations were compared through the main performance parameters,such as the round-trip efficiency.A total power output of around 10 MW was set,leading to a TES tank volume ranging between 500 and 700 m^(3).The second configuration with three TES systems appears to be the most promising in terms of round-trip efficiency

关键词： compressed air energy storage low temperature A-CAES Thermal Energy Storage system integration

Sonic hedgehog signaling controls dentate gyrus patterning and adult neurogenesis in the hippocampus

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Neural Regeneration Research 2019年第1期14卷 59-61页

作者： francesca Antonelli Arianna Casciati Simonetta Pazzaglia Laboratory of Biomedical Technologies Agenzia Nazionale per le Nuove Tecnologie l'Energia e lo Sviluppo Economico Sostenibile(ENEA)

The morphogen Sonic Hedgehog(Shh)plays a critical role in the development of different tissues,both in invertebrates and *** mediates its action via a receptor complex associating two transmembrane proteins:Patched1(Ptch1)and Smoothened(Smo).The repression exerted by Ptch1 on Smo is relieved when Shh,the ligand,binds to Ptch1,which leads to a complex signaling cascade involving the transcription factors of the Gli family and finally,to

关键词：神经发生信号刺猬声音无脊椎动物回转牙齿控制

Review of incidence and outcomes of treatment of cholangiocarcinoma in patients with primary sclerosing cholangitis

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World Journal of Gastrointestinal Oncology 2021年第10期13卷 1336-1366页

作者： francesca Saffioti Vasileios K Mavroeidis Department of Gastroenterology and Hepatology Oxford University Hospitals NHS Foundation TrustOxford OX39DUOxfordshireUnited Kingdom UCL Institute for Liver and Digestive Health and Sheila Sherlock Liver Unit Royal Free HospitalUniversity College LondonLondon NW32QGUnited Kingdom Department of Surgery The Royal Marsden NHS Foundation TrustLondon SW36JJUnited Kingdom Department of Transplant Surgery North Bristol NHS TrustSouthmead HospitalBristol BS105NBUnited Kingdom

Primary sclerosing cholangitis(PSC)is a premalignant condition and a welldocumented risk factor for cholangiocarcinoma(CCA)which is the most common malignancy in this setting and the leading cause of deaths in the recent years,with an increasing ***-associated CCA has a geographical distribution that follows the incidence of PSC,with an observed ascending gradient from the Eastern to the Western and from the Southern to the Northern *** may arise at any location along the biliary tree but is most common in the perihilar *** with PSC and intrahepatic or perihilar CCA are typically not suitable for liver resection,which is otherwise the treatment of choice with curative intent in patients with resectable tumours,providing a radical resection with clear margins can be *** largely relates to the commonly advanced stage of liver disease at presentation,which allows consideration for liver resection only for a very limited number of suitable patients with *** the other hand,remarkable progress has been reached in the last decades with the implementation of a protocol combining neoadjuvant chemoradiation and orthotopic liver transplantation(OLT)for the treatment of perihilar CCA,within specific *** results have been achieved particularly for PSC patients with this cancer,who seem to benefit the most from this treatment,having converted this into an accepted indication for transplantation and the standard of care in several experienced *** CCA as an indication for OLT remains controversial and has not been accepted given disappointing previous ***,as recent studies have shown favourable outcomes in early intrahepatic CCA,it may be that under defined criteria,OLT may play a more prominent role in the *** CCA in the context of PSC requires aggressive surgical treatment with curative intent,when *** review provides insight about particular features of CCA in the setting of

关键词： Cholangiocarcinoma Primary sclerosing cholangitis Liver resection Liver transplantation Neoadjuvant therapy Adjuvant therapy