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| 1 | Experimental Investigation of Separation and Transition Processes on a High-Lift Low-Pressure Turbine Profile Under Steady and Unsteady Inflow at Low Reynolds Number显示文摘The effects induced by the presence of incoming wakes on the boundary layer developing over a high-lift low-pressure turbine profile have been investigated in a linear cascade at mid-span.The tested Reynolds number is 70000,typical of the cruise operating condition.The results of the investigations performed under steady and unsteady inflow conditions are analyzed.The unsteady investigations have been performed at the reduced frequency of f+=0.62,representative of the real engine operating condition.Profile aerodynamic loadings as well as boundary layer velocity profiles have been measured to survey the separation and transition processes.Spectral analysis has been also performed to better understand the phenomena associated with the transition process under steady inflow.For the unsteady case,a phase-locked ensemble averaging technique has been employed to reconstruct the time-resolved boundary layer velocity distributions from the hot-wire instantaneous signal output.The ensemble-averaging technique allowed a detailed analysis of the effects induced by incoming wakes-boundary layer interaction in separation suppression.Time-resolved results are presented in terms of mean velocity and unresolved unsteadiness time-space plots. | Satta F Simoni D Ubaldi M Zunino P Bertini F | 2010 | Journal of Thermal Science2010，19，1： | 9 |
| 2 | Management of liver cirrhosis between primary care and specialists显示文摘This article discusses a practical, evidence-based approach to the diagnosis and management of liver cirrhosis by focusing on etiology, severity, presence of complications, and potential home-managed treatments. Relevant literature from 1985 to 2010 (PubMed) was reviewed. The search criteria were peer-reviewed full papers published in English using the following MESH headings alone or in combination: 'ascites', 'liver fibrosis', 'cirrhosis', 'chronic hepatitis', 'chronic liver disease', 'decompensated cirrhosis', 'hepatic encephalopathy', 'hypertransaminasemia', 'liver transplantation' and 'portal hypertension'. Forty-nine papers were selected based on the highest quality of evidence for each section and type (original, randomized controlled trial, guideline, and review article), with respect to specialist setting (Gastroenterology, Hepatology, and Internal Medicine) and primary care. Liver cirrhosis from any cause represents an emerging health issue due to the increasing prevalence of the disease and its complications worldwide. Primary care physicians play a key role in early identification of risk factors, in the management of patients for improving quality and length of life, and for preventing complications. Specialists, by contrast, should guide specific treatments, especially in the case of complications and for selecting patient candidates for liver transplantation. An integrated approach between specialists and primary care physicians is essential for providing better outcomes and appropriate home care for patients with liver cirrhosis. | Ignazio Grattagliano Enzo Ubaldi Leonilde Bonfrate Piero Portincasa | 2011 | World Journal of Gastroenterology2011，17，18： | 5 |
| 3 | Profile and Secondary Flow Losses in a High-Lift LPT Blade Cascade at Different Reynolds Numbers under Steady and Unsteady Inflow Conditions显示文摘The aerodynamic flow field downstream of a Low-Pressure High-Lift(HL)turbine cascade has been experimentally investigated for different Reynolds numbers under both steady and unsteady inflows,in order to analyse the cascade performance under real engine operating conditions.The Reynolds number has been varied in the range 100000 | Satta F. Simoni D. Ubaldi M. Zunino P. Bertini F. | 2012 | Journal of Thermal Science2012，21，6： | 5 |
| 4 | Experimental Investigation of Flow Instabilities in a Laminar Separation Bubble显示文摘The present paper reports the results of a detailed experimental study aimed at investigating the dynamics of a laminar separation bubble, from the origin of separation up to the breakdown to turbulence of the large scale coherent structures generated as a consequence of the Kelvin-Helmholtz instability process. Measurements have been performed along a flat plate installed within a double contoured test section, designed to produce an adverse pressure gradient typical of Ultra-High-Lift turbine blade profiles, which induces the formation of a laminar separation bubble at low Reynolds number condition. Measurements have been carried out by means of complementary techniques: hot-wire(HW) anemometry, Laser Doppler Velocimetry(LDV) and Particle Image Velocimetry(PIV). The high accuracy 2-dimensional LDV results allow investigating reverse flow magnitude and both Reynolds normal and shear stress distributions along the separated flow region, while the high frequency response of the HW anemometer allows analyzing the amplification process of flow oscillations induced by instability mechanisms. PIV results complement the flow field analysis providing information on the generation and evolution of the large scale coherent structures shed as a consequence of the separated shear layer roll-up, through instantaneous velocity vector maps. The simultaneous analysis of the data obtained by means of the different measuring techniques allows an in depth view of the instability mechanisms involved in the transition/reattachment processes of the separated shear layer. | Simoni D. Ubaldi M. Zunino P. | 2014 | Journal of Thermal Science2014，23，3： | 4 |
| 5 | 减少卵子老化对于补救性卵母细胞单精子显微注射结局的影响显示文摘Objective: To evaluate the results of a novel protocol that allows to rescue IVF unfertilized oocytes by intracytoplasmic sperm injection (ICSI).Design: Prospective clinical trial.Setting: Private reproductive medical center.Patient(s): Thirty patients undergoing IVF.Intervention(s): Controlled ovarian stimulation (COS), conventional IVF, rescue ICSI, embryo culture, and embryo transfer.Main Outcome Measure(s): Identification of unfertilized IVF oocytes 6 hours after insemination and fertilization, and developmental rates of those oocytes after rescue microinjection, as well implantation and pregnancy rates (PR).Result(s): All oocytes (392) from 30 patients were inseminated with standard IVF 3 hours after ovum pick- up.Polar body (PB) status was checked at decumulation and rechecked 3 hours later.Eighty- two oocytes were fertilized after IVF alone and 184 nonactivated oocytes (failed fertilization) were rescue microinjected and 166 of them fertilized (20 patients).Cleavage stage on day 2 was significantly more advanced and embryo grade was higher after standard IVF fertilization than after rescue ICSI.Eight of the 30 embryos transferred were implanted in the IVF- only patients (27% )- and 8 of 68 embryos in the rescue ICSI patients (12% ).Conclusion(s): Rescue ICSI of unfertilized IVF oocytes 6 hours after insemination (9 hours after egg retrieval) can provide normal fertilization, embryo development, and pregnancy; however, corresponding outcome parameters tend to be impaired in comparison to the standard IVF fertilization results. | Nagy Z.P. Rienzi L.F. Ubaldi F.M. 朱亮 | 2006 | 世界核心医学期刊文摘(妇产科学分册)2006，2，9： | 2 |
| 6 | Cumulative pregnancy rates after transfer of fresh and thawed embryos显示文摘 | Ubaldi CF Rienzi L Baroni E | 2004 | Eur J Obstetrics Gynecol Reprod Biol2004，115，7： | 1 |
| 7 | Premature luteinization in in vitro fertilization cycles using gonadotropin-releasing hormone agonist (GnRH-a) and recombinant follicle-stimulating hormone (FSH) and GnRH-a and urinary FSH显示文摘 | Ubaldi F Camus M Smitz J | 1996 | Fertil Steril JT-Fertility and Sterility1996，66，2： | 1 |
| 8 | Predictive value of oocyte morphology in human IVF : a systematic review of the lite- ratureHum显示文摘 | Rienzi L Vajta G Ubaldi F | 2011 | Reprod Update2011，17，1： | 1 |
| 9 | Effect of reduced oocyte aging on the outcome of recue intracytoplasmic sperm injection显示文摘 | Nagy ZP Rienzi LF Ubaldi FM | 2006 | Fertil Steril2006，85，4： | 1 |
| 10 | Morphological selection of gametes显示文摘 | UBALDI F RIENZI L | 2008 | Placenta2008，29，： | 1 |
| 11 | Predictive value of oocyte morphology in human IVP: a systematic review of the literature显示文摘 | Rienzi L Vajta G Ubaldi F | 2011 | Hum Reprod Update2011，17，1： | 1 |
| 12 | Relationship between meiotic spindle location with regard to the polar body position and oocyte developmental potential after 1CSI显示文摘 | RienziL Ubaldi F Martinez F | 2003 | Hum Re- prod2003，18，6： | 1 |
| 13 | Neurokinin 1 receptor blockade in the medial amygdala attenuates alcohol drinking in rats with innate anxiety but not in Wistar rats显示文摘 | Ayanwuyi LO Stopponi S Ubaldi M | 2015 | Br J Pharmacol2015，172，21： | 1 |
| 14 | Developmental potential of fully intact and partially damaged cryopreserved embryos after laser-assisted removal of necrotic blastomeres and post-thaw cuhure selection显示文摘 | RIENZI L UBALDI F IACOBELLI M | 2005 | Fertil Steril2005，84，4： | 1 |
| 15 | Effect of reduced oocyte aging on the outcome of rescue intracytoplasmic sperm injection 显示文摘 | Nagy Z Rienzi L Ubaldi F | 2006 | Fertil Steri12006，85，： | 1 |
| 16 | Caspase-dependent and -independent DNA fragmentation in Sertoli and germ cells from men with primary testicular failure:relationship with histological diagnosis显示文摘 | Tesarik J Ubaldi F Rienzi L | 2004 | Hum Reprod2004，19，2： | 1 |
| 17 | Preincubation of human oocytes may improve fertilization and embryo quality after intracytoplasmic sperm injection显示文摘 | Rienzi L Ubaldi F Anniballo R | 1998 | Hum Reprod1998，13，4： | 1 |
| 18 | Predictive value of oocyte morphology in human IVF显示文摘 | Rienzi L Vajta G Ubaldi F | | A systematic review of the literature0，，： | 1 |
| 19 | Premature luteinization in vitro fertilization cycles using gonadotropin-releasing hormone agonist(GnRH-a) and recombinant follicle-stimulating hormone (FSH)and GnRH-a and urinary FSH显示文摘 | Ubaldi F Camus M Smitz J | 1996 | Fertil Steril1996，66，： | 1 |
| 20 | Laser assisted removal of necrotic blastomeres from cryopreserved embryos that were partially damaged 显示文摘 | Rienzi L Nagy ZP Ubaldi F | 2002 | Fertil Steril2002，77，6： | 1 |
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