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| 1 | Combined Experimental and Numerical Investigations on the Roughness Effects on the Aerodynamic Performances of LPT Blades显示文摘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. | Marco Berrino Fabio Bigoni Daniele Simoni Matteo Giovannini Michele Marconcini Roberto Pacciani Francesco Bertini | 2016 | Journal of Thermal Science2016,25,1: | 3 |
| 2 | Changes in foliar carbon isotope composition and seasonal stomatal conductance reveal adaptive traits in Mediterranean coppices affected by drought显示文摘We estimated water-use efficiency and potential photosynthetic assimilation of Holm oak(Quercus ilex L.) on slopes of NW and SW aspects in a replicated field test examining the effects of intensifying drought in two Mediterranean coppice forests. We used standard techniques for quantifying gas exchange and carbon isotopes in leaves and analyzed total chlorophyll, carotenoids and nitrogen in leaves collected from Mediterranean forests managed under the coppice system. We postulated that responses to drought of coppiced trees would lead to differential responses in physiological traits and that these traits could be used by foresters to adapt to predicted warming and drying in the Mediterranean area. We observed physiological responses of the coppiced trees that suggested acclimation in photosynthetic potential and water-use efficiency:(1) a significant reduction in stomatal conductance(p<0.01) wasrecorded as the drought increased at the SW site;(2) foliar δ13C increased as drought increased at the SW site(p<0.01);(3) variations in levels of carotenoids and foliar nitrogen, and differences in foliar morphology were recorded, and were tentatively attributed to variation in photosynthetic assimilation between sites. These findings increase knowledge of the capacity for acclimation of managed forests in the Mediterranean region of Europe. | Giovanni Di Matteo Luigi Perini Paolo Atzori Paolo De Angelis Tiziano Mei Giada Bertini Gianfranco Fabbio Giuseppe Scarascia Mugnozza | 2014 | Journal of Forestry Research2014,25,4: | 2 |
| 3 | Findings from Left Ventricular Strain and Strain Rate Imaging in Asymptomatic Patients With Type 2 Diabetes Mellitus显示文摘 | Arnold C.T. Ng Victoria Delgado Matteo Bertini Rutger W. van der Meer Luuk J. Rijzewijk Miriam Shanks Gaetano Nucifora Johannes W.A. Smit Michaela Diamant Johannes A. Romijn Albert de Roos Dominic Y. Leung Hildo J. Lamb Jeroen J. Bax | 2009 | The American Journal of Cardiology2009,,10: | 1 |
| 4 | Clinical implications of left superior vena cava persistence in candidates for pacemaker or cardioverter-defibrillator implantation显示文摘 | Mauro Biffi Matteo Bertini Matteo Ziacchi Cristian Martignani Cinzia Valzania Igor Diemberger Angelo Branzi Giuseppe Boriani | 2009 | Heart and Vessels2009,,2: | 1 |
| 5 | Prevalence and characteristics of patients with clinical improvement but not significant left ventricular reverse remodeling after cardiac resynchronization therapy显示文摘 | Dominique Auger Rutger J. van Bommel Matteo Bertini Victoria Delgado Arnold C.T. Ng See Hooi Ewe Miriam Shanks Nina Ajmone Marsan Eline A.Q. Mooyaart Tomasz Witkowski Don Poldermans Martin J. Schalij Jeroen J. Bax | 2010 | American Heart Journal2010,,4: | 1 |
| 6 | Myocardial Steatosis and Biventricular Strain and Strain Rate Imaging in Patients With Type 2 Diabetes Mellitus显示文摘 | Arnold C.T. Ng Victoria Delgado Matteo Bertini Rutger W. van der Meer Luuk J. Rijzewijk See Hooi Ewe Hans-Marc Siebelink Johannes W.A. Smit Michaela Diamant Johannes A. Romijn Albert de Roos Dominic Y. Leung Hildo J. Lamb Jeroen J. Bax | 2010 | Circulation2010,,24: | 1 |
| 7 | Left Ventricular Rotational Mechanics in Acute Myocardial Infarction and in Chronic (Ischemic and Nonischemic) Heart Failure Patients显示文摘 | Matteo Bertini Gaetano Nucifora Nina Ajmone Marsan Victoria Delgado Rutger J. van Bommel Giuseppe Boriani Mauro Biffi Eduard R. Holman Ernst E. Van der Wall Martin J. Schalij Jeroen J. Bax | 2009 | The American Journal of Cardiology2009,,: | 1 |
| 8 | Impact of chronic kidney disease on mortality in older adults treated with pacemaker implantation显示文摘ObjectiveTo 调查长期的肾疾病是否能否定地在为 31 愠汢瑡潩 n 跟随起来的在为回顾的观察学习连续地考虑了 538 个更老的成年人的 bradyarrhythmias.MethodsThis 的承认承认了以后。 | Fabio Fabbian Alfredo De Giorgi Matteo Guarino Michele Malagu Matteo Bertini | 2017 | Journal of Geriatric Cardiology2017,14,10: | 1 |
| 9 | Acute Effects of Right Ventricular Apical Pacing on Left Ventricular Synchrony and Mechanics显示文摘 | Victoria Delgado Laurens F. Tops Serge A. Trines Katja Zeppenfeld Nina Ajmone Marsan Matteo Bertini Eduard R. Holman Martin J. Schalij Jeroen J. Bax | 2009 | Circulation: Arrhythmia and Electrophysiology2009,,2: | 1 |
| 10 | Incremental Prognostic Value of Novel Left Ventricular Diastolic Indexes for Prediction of Clinical Outcome in Patients With ST-Elevation Myocardial Infarction显示文摘 | Miriam Shanks Arnold C.T. Ng Nico R.L. van de Veire M. Louisa Antoni Matteo Bertini Victoria Delgado Gaetano Nucifora Eduard R. Holman Jonathan B. Choy Dominic Y. Leung Martin J. Schalij Jeroen J. Bax | 2010 | The American Journal of Cardiology2010,,: | 1 |
| 11 | Impact of time to reperfusion after acute myocardial infarctionon myocardial damage assessed by left ventricular longitudinal strain 显示文摘 | Matteo Bertini Sjoerd Molle MA Victoria Delgado | 2009 | Am J Cardiol2009,104,4: | 1 |
| 12 | Single lead catheter of implantable cardioverterdefibrillator with floating atrial sensing dipole implanted via persistent left superior vena cava显示文摘Persistent left superior vena cava(LSVC) is a congenital anomaly with 0.3%-1% prevalence in the general population. It is usually asymptomatic but in case of transvenous lead positioning, i.e., for pacemaker or implantable cardioverter defibrillator(ICD), may be a cause for significant complications or unsuccessful implantation. Single lead ICD with atrial sensing dipole(ICD DX) is a safe and functional technology in patients without congenital abnormalities. We provide a review of the literature and a case report of successful implantation of an ICD DX in a patient with LSVC and its efficacy in treating ventricular arrhythmias. | Michele Malagù Tiziano Toselli Matteo Bertini | 2016 | World Journal of Cardiology2016,8,4: | 1 |
| 13 | Impact of time to reperfusion after acute myocardial infarction on myocar- dial damage assessed by left ventricutar longitudinal strain显示文摘 | Matteo Bertini Mollema SA Victoria Delgado | 2009 | Am J Cardio12009,104,: | 1 |
| 14 | Myocardial Steatosis and Biventricular Strain and Strain Rate Imaging in Patients With Type 2 Diabetes Mellitus显示文摘 | Arnold C.T. Ng Victoria Delgado Matteo Bertini Rutger W. van der Meer Luuk J. Rijzewijk See Hooi Ewe Hans-Marc Siebelink Johannes W.A. Smit Michaela Diamant Johannes A. Romijn Albert de Roos Dominic Y. Leung Hildo J. Lamb Jeroen J. Bax | 2010 | Circulation2010,,24: | 1 |
| 15 | Phrenic Stimulation: A Challenge for Cardiac Resynchronization Therapy显示文摘 | Mauro Biffi Carlotta Moschini Matteo Bertini Davide Saporito Matteo Ziacchi Igor Diemberger Cinzia Valzania Giulia Domenichini Elena Cervi Cristian Martignani Diego Sangiorgi Angelo Branzi Giuseppe Boriani | 2009 | Circulation: Arrhythmia and Electrophysiology2009,,4: | 1 |
| 16 | Carbon concentrations and carbon storage capacity of three old-growth forests in the Sila National Park,Southern Italy显示文摘Old-growth forests play a key-role in reducing atmospheric carbon dioxide(CO_(2)) concentrations by storing large CO_(2)amounts in biomass and soil over time.This quantifies the carbon pool into different forest compartments in three Mediterranean old-growth forests of Southern Italy populated by Pinus laricio,Fagus sylvatica and Abies alba.Ecosystem carbon pools have been assessed per compartment,i.e.,living trees,dead wood,litterfall(foliar and woody),roots and 0-20 cm topsoil,combining the whole old-growth forest mass,(i.e.,using tree allometric relationships,deadwood factor conversions,root-to-shoot ratios,litterfall and soil samplings) by the respective organic carbon concentrations.The results show the considerable capacity of these forest ecosystems in storing CO_(2)in biomass and soil,with carbon pool values ranging from 532.2to 596.5 Mg C ha-1.Living trees and 0-20 cm topsoil had larger carbon pool,contributing 53.0 and 22.1%,respectively.In most cases,organic carbon concentration was higher(more than 60%) than the average carbon conversion rate of 50%,especially in living trees,deadwood,and woody litterfall.This study contributes further scientific evidence of the capacity of old-growth forests in storing CO_(2)in their different compartments,with special evidence on tree biomass,litterfall and mineral soil,thereby highlighting the key role of old-growth forests within the challenge of climate change mitigation. | Giovanni Di Matteo Giuseppe Luzzi Antonio Basile Angelo Sposato Giada Bertini Ulderico Neri Bruno Pennelli Rosario Napoli Pierfrancesco Nardi | 2023 | Journal of Forestry Research2023,34,1: | 0 |
| 17 | Hemorrhagic cardiac tamponade after percutaneous laser ablation of a liver metastasis in segment II显示文摘Despite percutaneous laser thermal ablation(LTA)of liver tumors being regarded as a safe technique,major complications can occur.We report the first case of hemorrhagic cardiac tamponade after LTA of a colorectal metastasis in segment II of the liver.Unpredictable heat diffusion causing indirect thermal injury to the pericardium with resultant hemorrhagic reaction was hypothesized as the most likely cause of tamponade.A pericardial drain was emergently placed,200 mL of bright red blood were drained,and the patient showed rapid hemodynamic improvement.For lesions located in segment II of the liver and strictly close to the pericardium,a careful risk/benefit analysis should be made by the multidisciplinary team to identify the best treatment option,taking into account both effectiveness and complications of each available technique. | Paola Tombesi Francesca Di Vece Silvia Rinaldi Matteo Bertini Sergio Sartori | 2016 | Hepatoma Research2016,2,1: | 0 |