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| 1 | Data-aided Frequency Estimation for Burst Digital Transmission显示文摘 | Mengali Umberto Morelli M | | 0，，01： | 2 |
| 2 | 钆特醇及钆喷替酸葡甲胺在1.5、3.0 TMR下鼠脑胶质瘤模型增强扫描中的应用比较研究显示文摘目的 对比钆特醇及Gd-DTPA在1.5及3.0 T MR下的增强效果,比较两者在增强扫描中的应用价值.方法 42只CDF Fisher 344雄性大鼠,采用经皮导管脑内接种胶质瘤细胞,培育1周,制作鼠脑胶质瘤模型.将大鼠采用数字表法随机分为4组,分别为12、10、10、10只,进行1.5及3.0 T MR下注射钆特醇及Gd-DTPA增强效果对比、注射钆特醇在1.5及3.0 T两种场强下增强效果对比、1.5 T MR下使用标准剂量钆特醇与3.0 T下使用半剂量增强效果对比.两次扫描间隔24 h.选取注射对比剂前及注射后第1、3、5、7、9分钟时间点的T1加权图像,利用影像工作站分析计算各图像的信噪比(signal to noise ratio,SNR),对比噪声比(contrast to noise ratio,CNR)及对比增强比(contrast enhancement,CE),所得数据选用Student配对双尾t检验行统计学分析.结果 1.5 T MR下,注射Gd-DTPA后各时间点图像SNR、CNR和CE平均值分别为54.4±3.2、17.0±3.3、20.8±3.4;注射钆特醇后各值分别为53.2±3.2、17.2±3.1、20.8±3.2,两者差异无统计学意义(t值分别为2.247、0.403、0.076,P值均>0.05).3.0 T MR下,注射Gd-DTPA后各时间点图像SNR、CNR和CE平均值分别为94.8±7.1、38.0±6.0、45.0±6.3;注射钆特醇后各值分别为95.5±2.9、37.2±2.7、45.6±2.8,两者差异亦无统计学意义(t值分别为0.303、0.573、0.357,P值均>0.05).注射钆特醇在1.5 T MR下增强扫描后各时间点图像SNR、CNR和CE平均值分别为51.9±3.0、15.6±3.0、18.6±3.0;在3.0 T MR下图像各值分别为86.1±4.9、27.4±5.0、37.3±5.3,均高于1.5 T MRI图像,差异有统计学意义(t值分别为36.227、11.977、17.106,P值均<0.05).1.5 T MR下注射标准剂量钆特醇增强扫描后,各时间点图像SNR、CNR和CE平均值分别为53.8±1.6、17.7±1.7、20.3±1.6;3.0 T MR下注射半剂量钆特醇增强图像各值分别为72.2±2.4、15.4±2.4、21.1±2.4,两者SNR、CNR均值差异有统计学意义(t值分别为31.503、5.137,P值均<0.05),而两者CE均值差异无统计学意义(t=2.033,P>0.05).结论 利用鼠脑胶质瘤模型,在1.5及3.0 T MR下注射钆特醇和Gd-DTPA行增强扫描,两者增强效果无明显差异;3.0 T MR下注射钆特醇行增强扫描,效果明显优于在1.5 T条件下使用;3.0 T MR下使用半剂量钆特醇与在1.5 T下使用标准剂量增强效果相仿,同样能取得满意的增强效果.因此,使用钆特醇可在保证增强效果的同时,在一定程度上降低使用MRI对比剂的风险,增加安全性. | 艾飞 Val M Runge John N Morelli Lan.Vu Jeremy Cannel Alan T Loynachan 漆剑频 李小明 | 2010 | 中华放射学杂志2010，44，11： | 2 |
| 3 | Competition between fusion-evaporation and multifragmentation in central collisions in ^(58)Ni+^(48)Ca at 25A MeV显示文摘The experimental data concerning the58Ni+48Ca reaction at Elab(Ni)=25A MeV,collected by using the CHIMERA 4π device,have been analyzed in order to investigate the competition among different reaction mechanisms for central collisions in the Fermi energy domain.As a main criterion for centrality selection we have chosen the flow angle(flow) method,making an event-by-event analysis that considers the shape of events,as it is determined by the eigenvectors of the experimental kinetic-energy tensor.For the selected central events(flow >60°) some global variables,good to characterize the pattern of central collisions have been constructed.The main features of the reaction products were explored by using different constraints on some of the relevant observables,like mass and velocity distributions and their correlations.Much emphasis was devoted,for central collisions,to the competition between fusion-evaporation processes with subsequent identification of a heavy residue and a possible multifragmentation mechanism of a well defined(if any) transient nuclear system.Dynamical evolution of the system and pre-equilibrium emission were taken into account by simulating the reactions in the framework of transport theories.Different approaches have been envisaged(dynamical stochastic BNV calculations + sequential SIMON code,QMD,CoMD,etc.).Preliminary comparison of the experimental data with BNV calculations shows reasonable agreement with the assumption of sequential multifragmentation emission in the mass region of IMFs close to the heavy residues.Possible deviations from sequential processes were found for those IMFs in the region of masses intermediate between the mass of heavy residues and the mass of light IMFs.Further simulations are in progress.The experimental analysis will be enriched also by information obtained inspecting the IMF-IMF correlation function,in order to elucidated the nature of space-time decay property of the emitting source associated with events having the largest IMF multiplicity. | FRANCALANZA L ABBONDANNO U AMORINI F BARLINI S BINI M BOUGAULT R BRUNO M CARDELLA G CASINI G AGOSTINO M D' De FILIPPO V De SANCTIS J GERACI E GIUSSANI A GRAMEGNA F GUIOT B KRAVCHUK V La GUIDARA E LANZALONE G Le NEINDRE N MAIOLINO C MARINI P MORELLI L OLMI A PAGANO A PAPA M PIANTELLI S PIRRONE S POLITI G POGGI G PORTO F RUSSOTTO P RIZZO F VANNINI G VANNUCCI L | 2013 | Nuclear Science and Techniques2013，24，5： | 2 |
| 4 | Flavans and A-Type proanthocyanidines from Prunus prostrata 显示文摘 | BILIA A R MORELLI I HAMBURGER M | 1996 | Phytochemistry1996，43，4： | 1 |
| 5 | Atmospheric input of inorganic nitrogen to the wastem Mediterranean 显示文摘 | Loye-Pilot M D Martin J M Morelli J | 1990 | Biogeochemistry1990，9，： | 1 |
| 6 | Non-alcoholic fatty liver disease (NAFLD) and its connection with insulin resistance, dysllpidemia, atheroscle,vsis and co,~na,T heart disease 显示文摘 | Gaggini M Morelli M Buzzigoli E | 2013 | Nutrients2013，5，5： | 1 |
| 7 | Chemical stability of CdSe quantum dots in seawater and their effects on a marine microalga显示文摘 | Morelli E Cioni P Posarelli M | 2012 | Aquatic Toxicology2012，，： | 1 |
| 8 | Laparoscopic lymphadenectomy as treatment of endometrial cancer显示文摘 | Morelli M Noia R Costantino A | 2007 | Minerva Ginecol2007，59，2： | 1 |
| 9 | Animal transmissible spongiform encephalopathies and genetics 显示文摘 | AGRIMI U CONTE M MORELLI L | 2003 | Vet Res Commun2003，27，1： | 1 |
| 10 | Decomposition of M-ray CPM signals into PAM waveforms显示文摘 | Mengali U Morelli M | 1995 | IEEE Trans Information Theory1995，41，： | 1 |
| 11 | An Improved Frequency Offset Estimator for OFDM Applications 显示文摘 | Morelli M Mengali U | 1999 | IEEE Transactions on Communications1999，3，3： | 1 |
| 12 | Decomposition of M-ary CPM Signals into PAM Waveforms 显示文摘 | MENGALI U MORELLI M | 1995 | IEEE Transac- tions on Information Theory1995，41，05： | 1 |
| 13 | KLF4 is a novelcandidate tumor suppressor gene in pancreatic ductal carcinoma显示文摘 | Zammarchi F Morelli M Menicagli M | 2011 | Am J Pathol2011，178，1： | 1 |
| 14 | Timing and frequency synchronization for the uplink of an OFDMA system 显示文摘 | Morelli M | 2004 | IEEE Trans Commun2004，52，29： | 1 |
| 15 | Inhibition of cyclin D1 expression by androgen receptor in breast cancer cells - indentification of a novel androgen response element显示文摘 | Lanzino M Sisci D Morelli C | 2010 | Nucleic Acids Res2010，38，16： | 1 |
| 16 | Geopolymer foams by gelcasting显示文摘 | Cilla S M Colombo P Morelli M R | 2014 | Ceram Int2014，，40： | 1 |
| 17 | An improved frequency offset estimator for OFDM applications显示文摘 | Morelli M Mengali U | 1999 | Communications Letters IEEE1999，3，3： | 1 |
| 18 | A comparative evaluation of thermodilution and partial CO2 rebreathing techniques for cardiac output assessment in critically ill patients during assisted ventilation 显示文摘 | Rocco M Spadetta G Morelli A | 2004 | Intensive Care Med2004，8287，： | 1 |
| 19 | Electric Force Microscopy Investigations of Barrier Formations in ZnO-based Varistors显示文摘 | Gheno S M Kiminami R H G A Morelli M R | 2010 | Journal of the European Ceramic Society Electroceramics XI Special Issue2010，30，2： | 1 |
| 20 | Vertebral artery dissection onset mimics migraine with aura in a graphic designer显示文摘 | Morelli N Mancuso M Gori S | 2008 | Headache2008，48，： | 1 |
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