检索结果-南通市图书馆

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

进行中的弗洛凯能带工程

Science Bulletin 2023年第8期68卷 751-752页

作者： Hannes Hübener umberto de giovannini Shunsuke A.Sato Angel Rubio Max Planck Institute for the Structure and Dynamics of Matter and Center for Free-Electron Laser Science Hamburg 22761Germany Universitàdegli Studi di Palermo Dipartimento di Fisica e Chimica—Emilio SegrèPalermo I-90123Italy Center for Computational Sciences University of TsukubaTsukuba 305-8577Japan Center for Computational Quantum Physics(CCQ) The Flatiron InstituteNew York NY 10010USA

In a recent article in Nature,Zhou et al.[1]reported an impressive demonstration of Floquet materials *** this field researchers aim at creating properties in materials that they do not usually exhibit in their equilibrium *** scope ranges from inducing phase transitions in out-of-equilibrium that can otherwise only be achieved by pressure or doping.

关键词：能带工程 equilibrium otherwise

Dynamical amplification of electric polarization through nonlinear phononics in 2D SnTe

在线全文

学校读者我要写书评

暂无评论

npj Computational Materials 2020年第1期6卷 155-162页

作者： Dongbin Shin Shunsuke A.Sato Hannes Hübener umberto de giovannini Noejung Park Angel Rubio Max Planck Institute for the Structure and Dynamics of Matter and Center for Free-Electron Laser Science Luruper Chaussee 149Hamburg 22761Germany Center for Computational Sciences University of TsukubaTsukuba 305-8577Japan Nano-Bio Spectroscopy Group Departamento de Fisica de MaterialesUniversidad del Pas VascoSan Sebastian 20018Spain department of Physics Ulsan National Institute of Science and TechnologyUNIST-gil 50Ulsan 44919Korea Center for Computational Quantum Physics(CCQ) The Flatiron Institute162 Fifth AvenueNew YorkNY 10010USA

Ultrafast optical control of ferroelectricity using intense terahertz fields has attracted significant *** we show that the nonlinear interactions between two optical phonons in SnTe,a two-dimensional in-plane ferroelectric material,enables a dynamical amplification of the electric polarization within subpicoseconds time *** first-principles time-dependent simulations show that the infrared-active out-of-plane phonon mode,pumped to nonlinear regimes,spontaneously generates in-plane motions,leading to rectified oscillations in the in-plane electric *** suggest that this dynamical control of ferroelectric material,by nonlinear phonon excitation,can be utilized to achieve ultrafast control of the photovoltaic or other nonlinear optical responses.

关键词： nonlinear ferroelectric phonon

What China's Medal Tally Tells Us

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Beijing Review 2024年第34期67卷 26-26页

作者： Matteo giovannini Beijing-based think tank Center for China and Globalization

Team China's performance at the Paris 2024Olympic SummerGameswas *** from the Chinese mainland took home 91 medals,their greatest achievement in an overseas Olympic *** audiences consider this feat a reflection of Chi... 详细信息

关键词： mainland breaking competitive

Vortex　Simulation　of　Axisymmetrical　Flows　in　Cylindrical　***：Application　to　Pipes　Incorporating　an　Orifice　Plate

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Thermal Science 1995年第4期4卷 221-228页

作者： André giovannini Yves Gagnon Université Paul Sabatier and Centre d’études et de recherches de Toulouse Toulouse France Université de Moncton Campus d’Edmundston Edmundston Canada

ＶｏｒｔｅｘＳｉｍｕｌａｔｉｏｎｏｆＡｘｉｓｙｍｍｅｔｒｉｃａｌＦｌｏｗｓｉｎＣｙｌｉｎｄｒｉｃａｌＧｅｏｍｅｔｒｉｅｓ．ＰａｒｔＩＩ：ＡｐｐｌｉｃａｔｉｏｎｔｏＰｉｐｅｓＩｎｃｏｒｐｏｒａｔｉｎｇａｎＯｒｉｆｉｃｅ... 详细信息

ＶｏｒｔｅｘＳｉｍｕｌａｔｉｏｎｏｆＡｘｉｓｙｍｍｅｔｒｉｃａｌＦｌｏｗｓｉｎＣｙｌｉｎｄｒｉｃａｌＧｅｏｍｅｔｒｉｅｓ．ＰａｒｔＩＩ：ＡｐｐｌｉｃａｔｉｏｎｔｏＰｉｐｅｓＩｎｃｏｒｐｏｒａｔｉｎｇａｎＯｒｉｆｉｃｅＰｌａｔｅ￥ＡｎｄｒＧｉｏｖａｎｎ...

关键词：涡流轴向对称流孔板

Kounis syndrome:a clinical entity penetrating from pediatrics to geriatrics

在线全文

学校读者我要写书评

暂无评论

Journal of Geriatric Cardiology 2020年第5期17卷 294-299页

作者： Mattia giovannini Ioanna Koniari Francesca Mori Silvia Ricci Luciano de Simone Silvia Favilli Sandra Trapani Giuseppe Indolfi Nicholas George Kounis Elio Novembre Allergy Unit Department of Pediatrics Meyer Children’s University Hospital Electrophysiology and device department University Hospital of South Manchester NHS Foundation Trust department of Health Sciences University of Florence Meyer Children’s Hospital Pediatric Cardiology Unit Meyer Children’s University Hospital department of Neurofarba University of Florence Meyer Children’s Hospital department of Cardiology Patras University School of Medicine

1 Introduction Kounis syndrome constitutes a coronary hypersensitivity disorder defined by the association of an anaphylactoid,anaphylactic,allergic or hypersensitivity reaction with an acute coronary syndrome,in a physiopathological context involving various interrelated and interacting inflammatory cells,such as mast-cells,eosinophils and platelets.[1,2]Similar entities to Kounis syndrome might involve cerebral and mesenteric arteries.

关键词： Age Classification Coronary artery disease Kounis syndrome Myocardial infarction

dectin- 1 isoforms contribute to distinct Th 1/Th 17 cell activation in mucosal candidiasis

在线全文

学校读者我要写书评

暂无评论

Cellular & Molecular Immunology 2012年第3期9卷 276-286页

作者： Agostinho Carvalho Gloria giovannini AntoneUa de Luca Carmen D＇Angelo Andrea Casagrande Rossana G Iannitti Giovanni Ricci Cristina Cunha Luigina Romani department of Experimental Medicine and Biochemical Sciences University of Perugia Perugia Italy Life and Health Sciences Research Institute （ICVS） School of Health Sciences University of Minho Braga Portugal CVS/3B＇s--PT Government Associate Laboratory Braga/Guimaraes Portugal

The recognition of p-glucans by dectin-1 has been shown to mediate cell activation, cytokine production and a variety of antifungal responses. Here, we report that the functional activity of dectin-1 in mucosal immunity to Candida albicans is influenced by the genetic background of the host. dectin-1 was required for the proper control of gastrointestinal and vaginal candidiasis in C57BIJ6, but not BALB/c mice; in fact, the latter showed increased resistance in the absence of dectin-1. The susceptibility of dectin-l-deficient C57BL/6 mice to infection was associated with defects in IL-17A and aryl hydrocarbon receptor-dependent IL-22 production and in adaptive Th I responses. In contrast, the resistance of dectin- 1-deficient BALB/c mice was associated with increased IL-17A and IL-22 production and the skewing towards Thl/Treg immune responses that provide immunological memory. Disparate canonical/ noncanonical NF-KB signaling pathways downstream of dectin-1 were activated in the two different mouse strains. Thus, the net activity of dectin-1 in antifungal mucosal immunity is dependent on the host＇s genetic background, which affects both the innate cytokine production and the adaptive Th1/Th17 cell activation upon dectin-1 signaling.

关键词： dectin-1 Mucosal candidiasis, Th1/Th17, 11-22, genetic background

Combined Experimental and Numerical Investigations on the Roughness Effects on the Aerodynamic Performances of LPT Blades

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Thermal Science 2016年第1期25卷 32-42页

作者： Marco Berrino Fabio Bigoni Daniele Simoni Matteo giovannini Michele Marconcini Roberto Pacciani Francesco Bertini DIME-Universita di Genova Via Montallegro116145GenovaItaly DIEF-Universita di Firenze Via Santa Marta350139FirenzeItaly GE Avio R&D Via I Maggio9910140Rivalta(TO)Italy

The aerodynamic performance of a high-load low-pressure turbine blade cascade has been analyzed for three different distributed surface roughness levels(Ra) for steady and unsteady inflows. Results from CFD simulations and experiments are presented for two different Reynolds numbers(300000 and 70000 representative of take-off and cruise conditions, respectively) in order to evaluate the roughness effects for two typical operating conditions. Computational fluid dynamics has been used to support and interpret experimental results, analyzing in detail the flow field on the blade surface and evaluating the non-dimensional local roughness parameters, further contributing to understand how and where roughness have some influence on the aerodynamic performance of the blade. The total pressure distributions in the wake region have been measured by means of a five-hole miniaturized pressure probe for the different flow conditions, allowing the evaluation of profile losses and of their dependence on the surface finish, as well as a direct comparison with the simulations. Results reported in the paper clearly highlight that only at the highest Reynolds number tested(Re=300000) surface roughness have some influence on the blade performance, both for steady and unsteady incoming flows. In this flow condition profile losses grow as the surface roughness increases, while no appreciable variations have been found at the lowest Reynolds number. The boundary layer evolution and the wake structure have shown that this trend is due to a thickening of the suction side boundary layer associated to an anticipation of transition process. On the other side, no effects have been observed on the pressure side boundary layer.

关键词：表面粗糙度涡轮叶片性能影响气动性能数值研究实验流体力学模拟计算流体动力学

Endoscopic ultrasonography:Transition towards the futureof gastro-intestinal diseases

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2016年第5期22卷 1779-1786页

作者： Stefania de Lisi Marc giovannini department of Gastroenterology A.O.Fatebenefratelli e Oftalmico20121 MilanItaly department of Gastroenterology Paoli-Calmettes Institute13009 MarseilleFrance

Endoscopic ultrasonography(EUS) is a technique with an established role in the diagnosis and staging of gastro-intestinal tumors. In recent years, the spread of new devices dedicated to tissue sampling has improved the diagnostic accuracy of EUS fine-needle aspiration. The development of EUS-guided drainage of the biliopancreatic region and abdominal fluid collections has allowed EUS to evolve into an interventional tool that can replace more invasive procedures. Emerging techniques applying EUS in pancreatic cancer treatment and in celiac neurolysis have been described. Recently, confocal laser endomicroscopy has been applied to EUS as a promising technique for the in vivo histological diagnosis of gastro-intestinal, bilio-pancreatic and lymph node lesions. In this state-of-the-art review, we report the most recent data from the literature regarding EUS devices, interventional EUS, EUS-guided confocal laser endomicroscopy and EUS pancreatic cancer treatment, and we also provide an overview of their principles, clinical applications and limitations.

关键词： Endoscopic ultrasonography Endoscopicultrasonography fine-needle aspiration Confocal laserendomicroscopy Biliary drainage Pancreatic cancertreatment

The Digital Yuan on The Daily Commute

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Beijing Review 2021年第29期64卷 28-29页

作者： Matteo giovannini the Industrial and Commercial Bank of China the China Task Force at the Italian Ministry of Economic development

The People's Bank of China has been stepping up promotion of the digital yuan,a so-called Central Bank Digital Currency that aims to replace some of the cash in *** represents an argument that places the country at the feverish center of a hot debate engaging international government officials,economists,bankers and business executives *** crucial question remains:How will this digital currency fare in daily life?

关键词： replace promotion argument