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137 results on '"Cau M"'

1. Diffuse Radio Sources in a Statistically Complete Sample of High Redshift Galaxy Clusters

Author

Giovannini, G., Cau, M., Bonafede, A., Ebeling, H., Feretti, L., Girardi, M., Gitti, M., Govoni, F., Ignesti, A., Murgia, M., Taylor, G. B., and Vacca, V.

Subjects
Astrophysics - Cosmology and Nongalactic Astrophysics, Astrophysics - Astrophysics of Galaxies
Abstract

Non-thermal properties of galaxy clusters have been studied with detailed and deep radio images in comparison with X-ray data. While much progress has been made, most of the studied clusters are at a relatively low redshift (z < 0.3). We here investigate the evolutionary properties of the non-thermal cluster emission using two statistically complete samples at z > 0.3. We obtained short JVLA observations at L-band of the statistically complete sample of very X-ray luminous clusters from the Massive Cluster Survey (MACS) presented by Ebeling et al. (2010), and redshift range 0.3 - 0.5. We add to this list the complete sample of the 12 most distant MACS clusters (z > 0.5) presented in Ebeling et al. (2007). Most clusters show evidence of emission in the radio regime. We present the radio properties of all clusters in our sample and show images of newly detected diffuse sources. A radio halo is detected in 19 clusters, and five clusters contain a relic source. Most of the brightest cluster galaxies (BCG) in relaxed clusters show radio emission with powers typical of FRII radio galaxies, and some are surrounded by a radio mini-halo. The high frequency of radio emission from the BCG in relaxed clusters suggests that BCG feedback mechanisms are in place already at z about 0.6. The properties of radio halos and the small number of detected relics suggest redshift evolution in the properties of diffuse sources. The radio power (and size) of radio halos could be related to the number of past merger events in the history of the system. In this scenario, the presence of a giant and high-power radio halo is indicative of an evolved system with a large number of past major mergers., Comment: Accepted for publication by Astronomy & Astrophysics. 19 pages, 24 Figures

Published
2020
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9. Spatial Distributions of Metal Atoms During Carbon SWNTs Formation: Measurements and Modelling

Author

Cau, M, Dorval, N, Attal-Tretout, B, Cochon, J. L, Loiseau, A, Farhat, S, Hinkov, I, and Scott, C. D

Subjects
Metals And Metallic Materials
Abstract

Experiments and modelling have been undertaken to clarify the role of metal catalysts during single-wall carbon nanotube formation. For instance, we wonder whether the metal catalyst is active as an atom, a cluster, a liquid or solid nanoparticle [1]. A reactor has been developed for synthesis by continuous CO2-laser vaporisation of a carbon-nickel-cobalt target in laminar helium flow. The laser induced fluorescence technique [2] is applied for local probing of gaseous Ni, Co and CZ species throughout the hot carbon flow of the target heated up to 3500 K. A rapid depletion of C2 in contrast to the spatial extent of metal atoms is observed in the plume (Fig. 1). This asserts that C2 condenses earlier than Ni and Co atoms.[3, 4]. The depletion is even faster when catalysts are present. It may indicate that an interaction between metal atoms and carbon dimers takes place in the gas as soon as they are expelled from the target surface. Two methods of modelling are used: a spatially I-D calculation developed originally for the arc process [5], and a zero-D time dependent calculation, solving the chemical kinetics along the streamlines [6]. The latter includes Ni cluster formation. The peak of C2 density is calculated close to the target surface where the temperature is the highest. In the hot region, C; is dominant. As the carbon products move away from the target and mix with the ambient helium, they recombine into larger clusters, as demonstrated by the peak of C5 density around 1 mm. The profile of Ni-atom density compares fairly well with the measured one (Fig. 2). The early increase is due to the drop of temperature, and the final decrease beyond 6 mm results from Ni cluster formation at the eutectic temperature (approx.1600 K).

Published
2004

13. DUCHENNE MUSCULAR DYSTROPHY - GENETICS

Author

Neri, M., primary, Mauro, A., additional, Gualandi, F., additional, Bruno, C., additional, Santorelli, F., additional, Tedeschi, S., additional, D'Amico, A., additional, Giardina, E., additional, Castori, M., additional, Cau, M., additional, Scuderi, C., additional, Sansone, V., additional, Messina, S., additional, Pegoraro, E., additional, Politano, L., additional, Bertini, E., additional, Comi, G., additional, Nigro, V., additional, Mercuri, E., additional, and Ferlini, A., additional

Published
2018
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14. Document Presence of Contracaecum spp. in teleosts cultured and fished in Sardinia

Author

SALATI, FULVIO, Meloni M., Cau M., Angelucci G., Salati F., Meloni M., Cau M., and Angelucci G.

Subjects
Contracaecum spp, Anisakidae
Abstract

This study reports the results of the finding of Contracaecum spp. during a survey on endoparasites isolated from cultured and wild fish and also from some cephalopods caught in Sardinian waters. Contracaecum spp. is a nematode belonging to the Anisakidae, and is reported to cause zoonosis in humans. Nematodes were detected after visual inspection and enzymatic digestion and then identified by morphologic observation, which was confirmed by PCR. The results show that Contracaecum spp. were found in both fish caught from sea or lagoon, and in both cultured and wild fish: 33 of the parasitized samples were wild fish (24 caught in the sea and 9 in lagoons) and 11 were cultured ones. The prevalence of Contracaecum spp. was higher in Diplodus spp. (16.0%), Sparus aurata (15.8%) and Mullus spp. (14.6%). Larvae were also found by enzymatic digestion at muscular level in 5 species, with the highest prevalence in S. aurata (10.5%). The results of this study indicate that Contracaecum spp. was present in cultured fish such as S. aurata, Diplodus spp. and Dicentrarchus labrax. All cultured fish with parasites were collected from land-based semi-intensive tanks whose water came from an adjacent lagoon. Finally, the evidence that this parasite is found in both cultured and wild fish leads us to re-consider the zoonotic potential of Contracaecum spp., in particular when one bears in mind its dimensions at the L3 stage, when it is barely visible to the human eye. © 2013 Elsevier B.V.

Published
2013

16. Archaeological evidence for the introduction of Emys orbicularis (Testudines: Emydidae) in the Balearic Islands, Western Mediterranean

Author

Universidad de Barcelona, Generalitat de Catalunya, Ministerio de Educación, Cultura y Deporte (España), Ministerio de Ciencia e Innovación (España), Valenzuela, Alejandro, Cau, M. A., Alcover, Josep Antoni, Universidad de Barcelona, Generalitat de Catalunya, Ministerio de Educación, Cultura y Deporte (España), Ministerio de Ciencia e Innovación (España), Valenzuela, Alejandro, Cau, M. A., and Alcover, Josep Antoni

Abstract

Among the different anthropogenic processes that affected the current distribution of the European pond turtle (Emys orbicularis), the timing of the human-mediated translocations is rarely known. Here we present data derived from an archaeological specimen of E. orbicularis obtained at the Roman site of Pollentia (Mallorca, Balearic Islands) using direct radiocarbon dating. These remains correspond to the early Roman period and represent the first reliable evidence for the ancient introduction of this turtle species in a Western Mediterranean Island.

Published
2016

18. INVESTIGATING THE PROVENANCE OF THE BAETICAN AMPHORAE DRESSEL 23: NEW ARCHAEOMETRIC EVIDENCE FROM LATE ROMAN CONSUMPTION CENTRES.

Author

Fantuzzi, L. and Cau, M. A.

Subjects
*ROMANS, *AMPHORAS, *ARCHAEOLOGICAL finds, *X-ray diffraction, *PETROLOGY, *HISTORY
Abstract

Baetican amphorae of the type Dressel 23 found in Late Roman consumption centres from the northeastern Iberian Peninsula and the Balearic Islands were archaeometrically investigated in order to characterise the materials and examine their provenance. A combination of analytical techniques was used, including optical microscopy (thin-section analysis), X-ray fluorescence, X-ray diffraction and scanning electron microscopy. The results show two main fabrics and a number of other less represented fabrics. Some of these fabrics comprise all the samples of the variants Dressel 23a and 23c, and can be related to a provenance in the Guadalquivir/Genil valleys, while other fabrics include all the Dressel 23d samples and their provenance must be situated in the coastal area of Málaga, based on their petrographic composition and the integration of the archaeological information. Some samples of Almagro 51A-B amphorae are also analysed, and show the same chemical-petrographic composition as the Dressel 23d individuals, this indicating that they both come from the same workshops. The results suggest that the arrival of Dressel 23 amphorae from the Málaga area to the analysed consumption centres may have been more significant in the Late Roman period than usually acknowledged. [ABSTRACT FROM AUTHOR]

Published
2017
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20. A report on 528 intragenic deletions detected in DMD and BMD patients by an Italian collaborative study

Author

Mioni, F, Danieli, Ga, Cao, A, Cau, M, Colonna Romano, S, Covone, Ae, De Leonardis, P, De Leo, R, Esposito, Mg, Felicetti, L, Ferlini, A, Forabosco, Galluzzi, G, Melis, Ma, Mostacciuolo, MARIA LUISA, Nigro, V, Ottolini, V, Politano, L, Romeo, G, Tedeschi, S, Vitiello, Libero, Zanetti, A., Mioni, F., Danieli, G. A., Cao, A., Cau, M., COLONNA R, S., Covone, A. E., Leonardis, P. DE, DE LEO, R., Esposito, M. G., Felicetti, L., Ferlini, A., Nigro, Vincenzo, and Politano, Luisa

Subjects
Dystrophin, Genetic Markers, Genetic Heterogeneity, Gene Frequency, Italy, Humans, Introns, Muscular Dystrophies, Sequence Deletion
Abstract

The results of a collaborative study involving about one third of the total DMD and BMD cases living in the Italian territory are reported. The analysis of the breakpoint frequency by intron revealed significant differences among regional groups of DMD patients (for introns 2, 11 and 50 in Sardinia and for introns 9 and 45 in northeastern Italy), whereas no regional differences were observed among regional groups of BMD patients. These differences involve the same Italian regions which previous studies, performed by different markers, identified as "genetically differentiated". The data support the possibility of a differential distribution among populations of some intronic sequences, facilitating the origin of deletion breakpoints within the dystrophin gene.

Published
1994

23. Randomized phase III clinical trial of two different arms of a combined treatment with carnitine plus celecoxib with or without megestrol acetate for patients with cancer-related anorexia/cachexia syndrome (CACS).

Author

Madeddu, C., primary, Panzone, F., additional, Serpe, R., additional, Antoni, G., additional, Cau, M. C., additional, Tanca, F. M., additional, Dessi', M., additional, Mura, M., additional, Mela, Q., additional, Macciò, A., additional, and Mantovani, G., additional

Published
2011
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34. Dystrophin gene abnormalities in two patients with idiopathic dilated cardiomyopathy

Author

Muntoni, F, Muntoni, F, Di Lenarda, A, Porcu, M, Sinagra, G, Mateddu, A, Marrosu, G, Ferlini, A, Cau, M, Milašin, Jelena, Melis, MA, Marrosu, MG, Cianchetti, C, Sanna, A, Falaschi, A, Camerini, F, Giacca, M., Mestroni, L, Muntoni, F, Muntoni, F, Di Lenarda, A, Porcu, M, Sinagra, G, Mateddu, A, Marrosu, G, Ferlini, A, Cau, M, Milašin, Jelena, Melis, MA, Marrosu, MG, Cianchetti, C, Sanna, A, Falaschi, A, Camerini, F, Giacca, M., and Mestroni, L

Abstract

Two new cases of dilated cardiomyopathy (DC) caused by dystrophinopathy are reported. One patient, a 21 year old man, had a family history of X linked DC, while the other, a 52 year old man, had sporadic disease. Each had abnormal dystrophin immunostaining in muscle or cardiac biopsy specimens, but neither had muscle weakness. Serum creatine kinase activity was raised only in the patient with familial disease. Analysis of dystrophin gene mutations showed a deletion of exons 48-49 in the patient with familial DC and of exons 49-51 in the other. Dystrophin transcription in cardiac tissue from the patient with sporadic disease showed abundant expression, predominantly of the muscle isoform. This study, together with previous reports, suggests that some patients with DC have a dystrophinopathy that can be diagnosed using a combination of biochemical and genetic analyses.

Published
1997

37. Dystrophin gene abnormalities in two patients with idiopathic dilated cardiomyopathy

Author

Muntoni, F., primary, Di Lenarda, A., additional, Porcu, M., additional, Sinagra, G., additional, Mateddu, A., additional, Marrosu, G., additional, Ferlini, A., additional, Cau, M., additional, Milasin, J., additional, Melis, M. A., additional, Marrosu, M. G., additional, Cianchetti, C., additional, Sanna, A., additional, Falaschi, A., additional, Camerini, F., additional, Giacca, M., additional, and Mestroni, L., additional

Published
1997
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41. ON STATISTICAL APPROACHES TO THE STUDY OF CERAMIC ARTEFACTS USING GEOCHEMICAL AND PETROGRAPHIC DATA.

Author

BAXTER, M. J., BEARDAH, C. C., PAPAGEORGIOU, I., CAU, M. A., DAY, P. M., and KILIKOGLOU, V.

Subjects
CERAMICS, ANALYTICAL geochemistry, MULTIVARIATE analysis, PETROGRAPHIC microscope, THIN sections (Geology)
Abstract

The scientific analysis of ceramics often has the aim of identifying groups of similar artefacts. Much published work focuses on analysis of data derived from geochemical or mineralogical techniques. The former is more likely to be subjected to quantitative statistical analysis. This paper examines some approaches to the statistical analysis of data arising from both kinds of techniques, including ‘mixed-mode’ methods where both types of data are incorporated into analysis. The approaches are illustrated using data derived from 88 Late Bronze Age transport jars from Kommos, Crete. Results suggest that the mixed-mode approach can provide additional insight into the data. [ABSTRACT FROM AUTHOR]

Published
2008
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43. Ultrasound evaluation of uterine wound healing following laparoscopic myomectomy: preliminary results.

Author

Seinera, P, Gaglioti, P, Volpi, E, Cau, M A, and Todros, T

Subjects
DOPPLER ultrasonography, CLINICAL trials, COMPARATIVE studies, LAPAROSCOPY, LONGITUDINAL method, RESEARCH methodology, MEDICAL cooperation, RESEARCH, RHEOLOGY, UTERINE fibroids, UTERINE tumors, WOUND healing, EVALUATION research
Abstract

The purpose of our work was to study the evolution of the uterine scar following laparoscopic myomectomy, as imaged by ultrasonography and Doppler velocimetry of the uterine arteries. We prospectively studied 30 patients. In the first phase, 15 patients were submitted to two-dimensional (2D) endovaginal ultrasound on day -1, 1, 7, 30 and 60 (surgery = day 0). In the second phase an additional 15 patients were studied by both 2D ultrasound and by Doppler velocimetry. The resistance index (RI) was calculated from the flow velocity waveform of the uterine arteries, at the origin of their ascending branch. Only one ultrasonic pattern was found, which was a dense echogenic area having an ill-defined, heterogeneous texture. In one case a small anechoic area (1 cm) was detected in the scar, possibly due to a haematoma. The evolution of uterine healing showed a progressive reduction in the size of the scar. On day 1 its mean diameter was 37.04% less than the myoma diameter and on day 30 71.7% less. The difference was significant at P < 0.001. A further significant (P < 0.001) reduction was found at day 60 in the 15 patients studied in phase I. On both day 1 and day 30 following surgery, there was no correlation between the sizes of the myoma and the scar. There was a statistically significant increase (P < 0.01) in the RI value of the ipsilateral uterine artery from 0.64 on day -1 to 0.79 on day 1. On day 30, 12/15 (80%) cases had RI values ranging between 0.80 and 0.98, while in three cases there was absence of end diastolic flow. The RI values of the contralateral uterine artery were high (0.90) before surgery and did not change afterwards. There was no correlation between the size of the myoma and the increase in the uterine artery RI value following surgery. Considering the velocimetric findings, 30 days are a reference point for assessing the healing process. Ultrasound imaging and Doppler velocimetry can be used for studying the evolution of the uterine scar following myomectomy. [ABSTRACT FROM AUTHOR]

Published
1999
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45. Dystrophin gene abnormalities in two patients with idiopathic dilated cardiomyopathy

Author

Porcu, M., Muntoni, F., Sanna, A., Ferlini, A., Mateddu, A., Lenarda, A.D., Marrosu, G., Sinagra, G., Marrosu, M.G., Milasin, J., Cianchetti, C., Falaschi, A., Cau, M., Camerini, F., Merlis, M.A., Giacca, M., and Mestroni, L.

Abstract

Two new cases of dilated cardiomyopathy (DC) caused by dystrophinopathy are reported. One patient, a 24 year old man, had a family history of X linked DC, while the other, a 52 year old man, had sporadic disease. Each had abnormal dystrophin immunostaining in muscle or cardiac biopsy specimens, but neither had muscle weakness. Serum creatine kinase activity was raised only in the patient with familial disease. Analysis of dystrophin gene mutations showed a deletion of exons 48-49 in the patient with familial DC and of exons 49-51 in the other. Dystrophin transcription in cardiac tissue from the patient with sporadic disease showed abundant expression, predominantly of the muscle isoform. This study, together with previous reports, suggests that some patients with DC have a dystrophinopathy that can be diagnosed using a combination of biochemical and genetic analyses.

Published
1997

46. Diclofenac Sodium in Ureteral Colic: A Double-Blind Comparison Trial with Placebo

Author

Vignoni, A, Fierro, A, Moreschini, G, Cau, M, Agostino, A, Daniele, E, Foti, G, and Grossi, E

Abstract

A randomized prospective double-blind study of the analgesic effect of 75 mg intramuscular diclofenac sodium (Voltaren®), a potent prostaglandin synthetase inhibitor, versus placebo (saline solution) was carried out in 131 consecutive patients with acute ureteral colic. Diclofenac provided complete relief of pain 25 minutes after the injection in 59% of the cases, while placebo provided relief in 29% (p < 0·01).Forty patients in the placebo group and seventeen patients in the diclofenac group needed an open injection of 75 mg diclofenac intramuscularly after 25 minutes due to persistent pain.Fifty-four of the fifty-seven patients treated with an open injection of diclofenac achieved complete relief of pain after 30 minutes.There were no side-effects of the treatment.

Published
1983
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