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| 1 | Damage evolution and dynamic response of cement asphalt mortar layer of slab track under vehicle dynamic load显示文摘The damage evolution and dynamic performance of a cement asphalt(CA)mortar layer of slab track subjected to vehicle dynamic load is investigated in this paper.Initially,a statistical damage constitutive model for the CA mortar layer is developed using continuous damage mechanics and probability theory.In this model,the strength of the CA mortar elements is treated as a random variable,which follows the Weibull distribution.The inclusion of strain rate dependence affords considering its influence on the damage development and the transition between viscosity and elasticity.Comparisons with experimental data support the reliability of the model.A three-dimensional finite element(FE)model of a slab track is then created with the commercial software ABAQUS,where the devised model for the CA mortar is implemented as a user-defined material subroutine.Finally,a vertical vehicle model is coupled with the FE model of the slab track,through the wheel-rail contact forces,based on the nonlinear Hertzian contact theory.The evolution of the damage and of the dynamic performance of the CA mortar layer with various initial damage is investigated under the train and track interaction.The analysis indicates that the proposed model is capable of predicting the damage evolution of the CA mortar layer exposed to vehicle dynamic load.The dynamic compressive strain,the strain rate,and the induced damage increase significantly with an increase in the initial damage,whereas the dynamic compressive stress exhibits a sharp decrease with the increasing initial damage.Also,it is found that the strain rate dependence significantly influences the damage evolution and the dynamic behavior of the CA mortar layer. | ZHU ShengYang FU Qiang CAI ChengBiao SPANOS Pol D | 2014 | Science China(Technological Sciences)2014,57,10: | 19 |
| 2 | Synthesis of accelerograms compatible with the Chinese GB 50011-2001 design spectrum via harmonic wavelets: artifi cial and historic records显示文摘A versatile approach is employed to generate artifi cial accelerograms which satisfy the compatibility criteria prescribed by the Chinese aseismic code provisions GB 50011-2001.In particular,a frequency dependent peak factor derived by means of appropriate Monte Carlo analyses is introduced to relate the GB 50011-2001 design spectrum to a parametrically defi ned evolutionary power spectrum(EPS).Special attention is given to the def inition of the frequency content of the EPS in order to accommodate the mathematical form of the aforementioned design spectrum.Further,a one-to-one relationship is established between the parameter controlling the time-varying intensity of the EPS and the effective strong ground motion duration.Subsequently,an effi cient auto-regressive moving-average(ARMA) fi ltering technique is utilized to generate ensembles of non-stationary artifi cial accelerograms whose average response spectrum is in a close agreement with the considered design spectrum.Furthermore,a harmonic wavelet based iterative scheme is adopted to modify these artifi cial signals so that a close matching of the signals' response spectra with the GB 50011-2001 design spectrum is achieved on an individual basis.This is also done for fi eld recorded accelerograms pertaining to the May,2008 Wenchuan seismic event.In the process,zero-phase high-pass f iltering is performed to accomplish proper baseline correction of the acquired spectrum compatible artifi cial and f ield accelerograms.Numerical results are given in a tabulated format to expedite their use in practice. | P.D. Spanos A. Giaralis Li Jie | 2009 | Earthquake Engineering and Engineering Vibration2009,8,2: | 3 |
| 3 | Sustained attention in psychosis:Neuroimaging findings显示文摘To provide a systematic review of scientific literatureon functional magnetic resonance imaging(fMRI) stud-ies on sustained attention in psychosis. We searchedPubMed to identify fMRI studies pertaining sustainedattention in both affective and non-affective psycho-sis. Only studies conducted on adult patients using asustained attention task during fMRI scanning wereincluded in the final review. The search was conductedon September 10 th, 2013. 15 fMRI studies met our in-clusion criteria: 12 studies were focused on Schizophre-nia and 3 on Bipolar Disorder Type Ⅰ(BDI). Only halfof the Schizophrenia studies and two of the BDI stud-ies reported behavioral abnormalities, but all of themevidenced significant functional differences in brain re-gions related to the sustained attention system. Alteredfunctioning of the insula was found in both Schizophre-nia and BDI, and therefore proposed as a candidate trait marker for psychosis in general. On the other hand, other brain regions were differently impaired in affective and non-affective psychosis: alterations of cingulate cortex and thalamus seemed to be more common in Schizophrenia and amygdala dysfunctions in BDI. Neural correlates of sustained attention seem to be of great interest in the study of psychosis, highlight-ing differences and similarities between Schizophrenia and BDI. | Gianna Sepede Maria Chiara Spano Marco Lorusso Domenico De Berardis Rosa Maria Salerno Massimo Di Giannantonio Francesco Gambi | 2014 | World Journal of Radiology2014,6,6: | 2 |
| 4 | Lactic acid bacteria as pro-technological,bioprotective and health-promoting cultures in the dairy food industry显示文摘Lactic acid bacteria (LAB) constitute pivotal microorganisms for the food industry due to their considerable technological and functional potential.Fermented dairy products,that is ancient traditions worldwide,still have been accepted and consumed today for their nutritional and organoleptic attributes.In accordance with the current trends in the market and greater awareness of consumer well-being,a detailed assessment of the health effects of dairy product consumption has been undertaken with particular reference to the production of bioactive metabolites including i.e.,γ-aminobutyric acid,conjugated linoleic acid,bioactive peptides,exopolysaccharides as well as vitamins during LAB fermentation.The long histories of yogurt,kefir,and traditional fermented milk drink as sources of some certain probiotic bacteria as well as the opportunity to bio-fortify the matrix with bioactive microbial compounds in situ make fermented dairy products an attractive model in the efforts to develop sustainable functional food systems.Therefore,this review provides the main biochemical characteristics and biotechnological application of LAB as pro-technological,bioprotective,and health-promoting in the food chain. | Duygu Ağagündüz Teslime Özge Şahin Şerife Ayten Birsen Yılmaz Bartu Eren Güneşliol Pasquale Russo Giuseppe Spano Fatih Özogul | 2022 | Food Bioscience2022,47,3: | 2 |
| 5 | Controlling cardiac chaos显示文摘 | Carfinkel A Spano M L Ditto W L | 1992 | SCIENCE1992,257,: | 2 |
| 6 | Detection of human papillomavirus DNA in esophageal carcinoma in Greece显示文摘AIM:To detect human papillomavirus(HPV)in theesophageal mucosa and the possible relationship with esophageal cancer in Greece.METHODS:Forty-nine patients underwent esophagogastroduodenoscopy(EGD)and esophageal biopsy at a university hospital that acts as a referral center for Northern Greece.Nineteen of these patients(14 male and 5 female)had esophageal squamous cell carcinoma(ESCC)and 30(15 male and 15 female)did not have any reported esophageal malignancy.Histopathological assessment was followed by polymerase chain reaction analysis of all the samples.Patient demographic data(age,sex,and place of birth)and information regarding smoking habits,alcohol consumption or sexual habits were collected.A method of statistical interference,verification of hypotheses based on homogeneity and independentχ2 test,was used.RESULTS:From the 49 patients that underwent EGD and biopsy,19 had ESCC and 30 had normal esophageal mucosa,with a mean age of 65.2 years.Regarding the prevalence of oncogenic risk factors for esophageal carcinoma,an interesting conclusion was that 78%of the patients used tobacco and almost one-third had multiple sexual partners,whereas only 20%of the patients consumed alcohol,which was not statistically significant,when compared to the control group.In the ESCC group,the only two positive samples were among the male patients(2/14 male patients with ESCC,14.5%).No HPV was identified in the control group.The predominant HPV types identified were 11 and 31,which have a low malignancy potential.The presence of HPV DNA in the ESCC group was not statistically significant,95%confidence interval(χ2=3.292,P=0.07).CONCLUSION:This is the first relevant study in Greece,and despite the lack of statistical significance,the issue of HPV infection and ESCC does merit further investigation. | Georgios Georgantis Theodoros Syrakos Theodoros Agorastos Spiridon Miliaras Asterios Gagalis Georgios Tsoulfas Konstantinos Spanos Georgios Marakis | 2015 | World Journal of Gastroenterology2015,21,8: | 2 |
| 7 | Environmetric modeling of emission sources for dry and wet precipitation from an urban area显示文摘 | Spanos T Simeonov V Andreev G | 2002 | Talanta2002,58,2: | 1 |
| 8 | A fuel dryness index for grassland fire danger assessment 显示文摘 | SNYDER R L SPANO D DUCE P | 2006 | Agricultural and Forest Meteorology2006,139,: | 1 |
| 9 | Speculation on whether a vaccine against cryptosporidiosis is a reality or fantasy 显示文摘 | De Graaf D C Spano F Petry F | 1999 | Int J Parasitol1999,29,8: | 1 |
| 10 | Speculation on whether a vaccine against cryptosporidiosis is a reality or fantasy显示文摘 | GRAAF D SPANO F PETRY F | 1999 | Int J Parasitol1999,29,8: | 1 |
| 11 | An examination into the causal logic of rent generation : Contrasting porter competitive strategy framework and the resource - based perspective 显示文摘 | Y E SPANOS S LIOUKAS | 2001 | Strategic Management Journal2001,22,10: | 1 |
| 12 | VEGF signalling inhibition-induced proteinuria: Mechanisms, significance and management显示文摘 | Izzedine H Massard C Spano J P | 2010 | Eur J Cancer2010,46,2: | 1 |
| 13 | Priority of resection in concomitant abdominal aortic aneuryam (AAA) and colorectal cancer (CRC):review of the literature and experience of our clinic显示文摘 | Kiskinis D Spanos C Melas N | 2004 | Tech Coloprectol2004,,: | 1 |
| 14 | Stress-induced intracranial mast cell degranulation: A corticotropin-releasing homone-mediated effect 显示文摘 | Spanos C Pang X et ol | 1995 | Endocrinology1995,136,12: | 1 |
| 15 | Supercritical CO2 Extraction of β-Carotene from Sweet Potatoes显示文摘 | chen H Schwartz S J | 1993 | Journal of Food Science1993,4,58: | 1 |
| 16 | A multiscale Monte Carlo finite element method for determining mechanical properties of polymer nanocompoaites显示文摘 | Spanos P D Kontsos A | 2008 | Probabillstic Engineering Mechanics2008,23,: | 1 |
| 17 | Red cell alloantibodies in patients with thalassemia显示文摘 | Spanos Th Karageorga M Ladis V | 1990 | Vox Sang1990,58,1: | 1 |
| 18 | Advances in the mecha- nism of deposition of the CrO4^2-, HCrO4-, and Cr2O72 species on the surface of titania consisting of anatase and rutile显示文摘 | Bourikas K Spanos N Lycourghiotis A | 1997 | Langrnuir1997,13,3: | 1 |
| 19 | Experimental control of chaos 显示文摘 | Ditto W L Rauseo S N Spano M L | 1990 | Physical Review Letters1990,65,26: | 1 |
| 20 | Measurement of transition dipole moments in lithium dimers using electromagnetically induced transparency 显示文摘 | QI J SPANO F C KIROVE T | 2002 | Phys Rev Lett2002,88,17: | 1 |