51
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Antolini F, Trave E, Mirenghi L, Re M, Mattei G, Tapfer L, Mazzoldi P. CdS and ZnS Nanoparticles Growth in Different Reaction Media: Synthesis and Characterization. ACTA ACUST UNITED AC 2011. [DOI: 10.1557/proc-879-z3.32] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
AbstractIn this work we report on the growth of cadmium sulfide and zinc sulfide nanocrystals by thermolysis, starting from a metal thiolate in a (i) solventless way, (ii) by a novel route in tryoctilphosphine oxide (TOPO), and (iii) by direct synthesis in a polystyrene matrix. The x-ray diffraction (XRD) and transmission electron microscopy (TEM) show that the nanocrystals fabricated by the different methods are under optimized growth conditions single crystals of zincblende structure and of regular spherical shape. The average size was estimated to be between 2.0-3.0 nm with a size dispersion that depends on the synthesis route and is in the range between 10% and 20%. The XPS results indicate that for the nanoparticles obtained via solventless strategy the sulfur is present both as bonded to the metal atom and to the organic residue, while in the TOPO synthesized nanoparticles the sulfur signal has only one component associated to the metal-sulfide bond. The photoluminescence spectroscopy (PL) analysis of CdS crystals clearly evidences the typical emissions of nanosized zincblende CdS monocrystalline particles. Furthermore, the optical spectroscopy data indicate that the size distribution of the Cdsulfide - TOPO nanoparticles seems to be generally larger than that ones grown directly in polymer matrix. For all the CdS samples, the metal-sulfide nanocrystals exhibit a trap-related radiative transition at about 2eV that can be attributed to the hole-electron recombination at particle surface defect-center.
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de Julián Fernández C, Mattei G, Paz E, Novak RL, Cavigli L, Bogani L, Palomares FJ, Mazzoldi P, Caneschi A. Coupling between magnetic and optical properties of stable Au-Fe solid solution nanoparticles. NANOTECHNOLOGY 2010; 21:165701. [PMID: 20348591 DOI: 10.1088/0957-4484/21/16/165701] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Au-Fe nanoparticles constitute one of the simplest prototypes of a multifunctional nanomaterial that can exhibit both magnetic and optical (plasmonic) properties. This solid solution, not feasible in the bulk phase diagram in thermal equilibrium, can be formed as a nanostructure by out-of-equilibrium processes. Here, the novel magnetic, optical and magneto-optical properties of ion-implanted Au-Fe solid solution nanoparticles dispersed in a SiO(2) matrix are investigated and correlated. The surface plasmon resonance of the Au-Fe nanoparticles with almost equicomposition is strongly damped when compared to pure Au and to Au-rich Au-Fe nanoparticles. In all cases, the Au atoms are magnetically polarized, as measured by x-ray magnetic circular dichroism, and ferromagnetically coupled with Fe atoms. Although the chemical stability of Au-Fe nanoparticles is larger than that of Fe nanoparticles, both the magnetic moment per Fe atom and the order temperature are smaller. These results suggest that electronic and magnetic properties are more influenced by the hybridization of the electronic bands in the Au-Fe solid solution than by size effects. On the other hand, the magneto-optical transitions allowed in the vis-nIR spectral regions are very similar. In addition, we also observe, after studying the properties of thermally treated samples, that the Au-Fe alloy is stabilized, not by surface effects, but by the combination of the out-of-equilibrium nature of the ion implantation technique and by changes in the properties due to size effects.
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Cattaruzza E, Battaglin G, Gonella F, Polloni R, Mattei G, Maurizio C, Mazzoldi P, Sada C, Montagna M, Tosello C, Ferrari M. On the optical absorption and nonlinearity of silica films containing metal nanoparticles. ACTA ACUST UNITED AC 2009. [DOI: 10.1080/13642810208224363] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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54
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Pellegrini G, Mattei G, Mazzoldi P. Tunable, directional and wavelength selective plasmonic nanoantenna arrays. NANOTECHNOLOGY 2009; 20:065201. [PMID: 19417373 DOI: 10.1088/0957-4484/20/6/065201] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Linear arrays of noble metal nanoparticles, supporting Bragg plasmonic resonances, are proposed as optical nanoantennae. Electrodynamic calculations show that tunable, directional and wavelength selective emission enhancement is obtained throughout the visible and near-infrared spectrum by varying the dielectric environment and the array geometrical parameters, and thus tuning the Bragg modes. Large quantum efficiency enhancements are possible even in the case of poor emitters (1% intrinsic efficiency), spanning wavelengths that are relevant in lighting (lambda approximately equal 400 nm) and telecommunication (lambda approximately equal 1.5 microm) applications. Nanoantenna array angular emission is highly directional and extremely sensitive to the array geometrical parameters and the dielectric environment.
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Albuquerque M, Pegoraro M, Mattei G, Reis A, Loguercio AD. Effect of Double-application or the Application of a Hydrophobic Layer for Improved Efficacy of One-step Self-etch Systems in Enamel and Dentin. Oper Dent 2008; 33:564-70. [DOI: 10.2341/07-145] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Clinical Relevance
The double-application and placement of a hydrophobic resin coat can improve the performance (μTBS) of one-step self-etch systems to tooth substrates, mainly in dentin.
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56
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Yakovlev VA, Novikova NN, Mattei G, Teplov AA, Shaĭtura DC, Dolgiĭ DI, Ol’shanskiĭ ED. Reflection spectra and optical constants of quasicrystalline Al-Pd-Re films in the IR region. CRYSTALLOGR REP+ 2007. [DOI: 10.1134/s106377450706017x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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57
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Vitale F, Mirenghi L, Piscopiello E, Pellegrini G, Trave E, Mattei G, Fratoddi I, Russo M, Tapfer L, Mazzoldi P. Gold nanoclusters–organometallic polymer nanocomposites: Synthesis and characterization. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2007. [DOI: 10.1016/j.msec.2006.06.041] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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58
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Tagliente M, Massaro M, de Julián Fernández C, Mattei G, Mazzoldi P. Annealing effects on the structural and magnetic properties of Fe–Al silica nanocomposites prepared by sequential ion implantation. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2006. [DOI: 10.1016/j.msec.2005.09.076] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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59
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Buso D, Guglielmi M, Martucci A, Mattei G, Mazzoldi P, Sada C, Post ML. Au and NiO nanocrystals doped into porous sol-gel SiO(2) films and the effect on optical CO detection. NANOTECHNOLOGY 2006; 17:2429-2433. [PMID: 21727486 DOI: 10.1088/0957-4484/17/10/001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Thin-film composites comprised of NiO and NiO/Au nanoparticles in a porous SiO(2) matrix have been prepared using the sol-gel technique. When at elevated temperatures (200 °C< T<350 °C) and exposed to carbon monoxide, the films undergo reversible changes in optical transmittance at wavelengths in the visible-near IR region. For NiO composite films heated at 330 °C and exposed to 1% CO in air, there is an increase in transmittance which approaches 2-4% over most of the visible range. For NiO/Au composite films the transmittance increase exhibits a wavelength dependence, with a maximum change which is close to 6% at λ≈630 nm and which is close to zero in the Au plasmon resonance range (λ≈550 nm).
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60
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de Julian Fernandez C, Manera MG, Spadavecchia J, Buso D, Pellegrini G, Mattei G, Martucci A, Rella R, Vasanelli L, Guglielmi M, Mazzoldi P. Gold/titania nanocomposites thin films for optical gas sensing devices. ACTA ACUST UNITED AC 2005. [DOI: 10.1117/12.608964] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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61
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Brouzi K, Ennaciri A, Capitelli F, Valentini V, Mattei G, Harcharras M. Vibrational Study of Manganese Ammonium Dihydrogendiphosphate Hydrated Mn 0.5NH 4H 2P 2O 7·H 2O. PHOSPHORUS SULFUR 2005. [DOI: 10.1080/104265090517307] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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62
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Saber A, Dal Toè S, Lo Russo S, Mattei G. Multilayer adsorption of gases in solids. Colloids Surf A Physicochem Eng Asp 2003. [DOI: 10.1016/s0927-7757(03)00033-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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63
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Maurizio C, Longo A, Martorana A, Cattaruzza E, D'Acapito F, Gonella F, de Julian C, Mattei G, Mazzoldi P, Padovani S, Boesecke P. Grazing-incidence small-angle X-ray scattering and X-ray diffraction from magnetic clusters obtained by Co + Ni sequential ion implantation in silica. J Appl Crystallogr 2003. [DOI: 10.1107/s0021889803006137] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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64
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Harcharras M, Ennaciri A, Assaaoudi H, Mattei G, D’Orazio V, Moliterni A, Capitelli F. Crystal structure and vibrational spectra of tetrasodium dimagnesium dihydrogen diphosphate octahydrate Na4Mg2(H2P2O7)4·8H2O. J SOLID STATE CHEM 2003. [DOI: 10.1016/s0022-4596(03)00007-0] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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65
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Mattei G, de Marchi G, Maurizio C, Mazzoldi P, Sada C, Bello V, Battaglin G. Chemical- or radiation-assisted selective dealloying in bimetallic nanoclusters. PHYSICAL REVIEW LETTERS 2003; 90:085502. [PMID: 12633436 DOI: 10.1103/physrevlett.90.085502] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2002] [Indexed: 05/24/2023]
Abstract
A selective dealloying in bimetallic nanoclusters prepared by ion implantation has been found upon thermal annealing in oxidizing atmosphere or irradiation with light ions. In the first process, the incoming oxygen interacts preferentially with copper promoting Cu2O formation, therefore extracting copper from the alloy. In the second process the irradiation with Ne ions promotes a preferential extraction of Au from the alloy, resulting in the formation of Au-enriched "satellite" nanoparticles around the original AuxCu1-x cluster.
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67
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Zucchini C, Strippoli P, Rosati G, Del Governatore M, Milano E, Ugolini G, Solmi R, Mattei G, Caira A, Zanotti S, Carinci P, Valvassori L. Expression analysis and mutational screening of the epithelium-specific ets gene-1 (ESE-1) in patients with squamous anal cancer. Int J Oncol 2000; 17:265-70. [PMID: 10891534 DOI: 10.3892/ijo.17.2.265] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
To investigate whether ESE-1 gene abnormalities are involved in alterations of epithelial cell differentiation in squamous anal cancer ESE-1 expression and structure were screened in six patients by reverse transcriptase-polymerase chain reaction (RT-PCR) and automated sequence analysis. The complete cDNA of isoform ESE-1b was always expressed and correctly spliced, with single nucleotide polymorphism being observed in two cases. Presence of ESE-1b point mutations was excluded. Expression of SPRR2A and ENDOA/CK8, two epithelium-specific ESE-1 target genes, were revealed by RT-PCR in all cases. This first report of expression of ESE-1, and of SPRR2A and ENDOA/CK8 (both related to terminal differentiation in different types of epithelia lining) in anal cancer excludes the hypothesis that these genes influenced carcinogenesis in our patients. Despite selecting of patients without clinical evidence of HPV infection, PCR consistently revealed HPV-16 DNA, highlighting the importance of HPV infection in anal cancer.
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68
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Cattaruzza E, d'Acapito F, Gonella F, Longo A, Martorana A, Mattei G, Maurizio C, Thiaudière D. GISAXS study of Cu–Ni alloy clusters obtained by double ion implantation in silicate glasses. J Appl Crystallogr 2000. [DOI: 10.1107/s0021889800099878] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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69
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Alieva EV, Knippels GMH, Kuzik LA, Mattei G, van der Meer AFG, Yakovlev VA. Sum-Frequency Generation Spectra of Thin Organic Films on Silver Enhanced Due to Surface Plasmon Excitation. ACTA ACUST UNITED AC 1999. [DOI: 10.1002/(sici)1521-396x(199909)175:1<109::aid-pssa109>3.0.co;2-q] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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70
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Tucci MG, Ricotti G, Giardino R, Carraro S, Mattei G, Cataldi I, Lucarini G, Solmi R, Tosi L, Biagini G. An experimental pilot study of tacalcitol activities during modulation of parakeratotic skin features. Cell Mol Biol (Noisy-le-grand) 1997; 43:1213-20. [PMID: 9489947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Establishing guidelines and experimental models preclinical and clinical evaluations of new agents for treatment, and/or prevention of human diseases has become a task of crucial importance. Psoriasis is such one disease holding great interest for dermatology owing to its high rate of incidence and complexity of treatment. However the absence of psoriatic lesions in animals and the inability to induce them, calls for experimental techniques both in vitro and in vivo. The purpose of this study was to evaluate experimentally the effects of tacalcitol on cell proliferation and differentiation process. Thereafter a human pilot study on psoriatic patients has been developed.
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71
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Mattei G, Mazzone A. Analysis of the capability of HREM applied to quantum heterostructures. Ultramicroscopy 1996. [DOI: 10.1016/0304-3991(96)00031-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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72
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Aho H, Schwemmer M, Tessman D, Murphy D, Mattei G, Engel W, Adham IM. Isolation, expression, and chromosomal localization of the human mitochondrial capsule selenoprotein gene (MCSP). Genomics 1996; 32:184-90. [PMID: 8833144 DOI: 10.1006/geno.1996.0104] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
The mitochondrial capsule selenoprotein (MCS) (HGMW-approved symbol MCSP) is one of three proteins that are important for the maintenance and stabilization of the crescent structure of the sperm mitochondria. We describe here the isolation of a cDNA, the exon-intron organization, the expression, and the chromosomal localization of the human MCS gene. Nucleotide sequence analysis of the human and mouse MCS cDNAs reveals that the 5'- and 3 '-untranslated sequences are more conserved (71%) than the coding sequences (59%). The open reading frame encodes a 116-amino-acid protein and lacks the UGA codons, which have been reported to encode the selenocysteines in the N-terminal of the deduced mouse protein. The deduced human protein shows a low degree of amino acid sequence identity to the mouse protein (39%). The most striking homology lies in the dicysteine motifs. Northern and Southern zooblot analyses reveal that the MCS gene in human, baboon, and bovine is more conserved than its counterparts in mouse and rat. The single intron in the human MCS gene is approximately 6 kb and interrupts the 5'-untranslated region at a position equivalent to that in the mouse and rat genes. Northern blot and in situ hybridization experiments demonstrate that the expression of the human MCS gene is restricted to haploid spermatids. The human gene was assigned to q21 of chromosome 1.
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73
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Lulli G, Parisini A, Mattei G. Influence of electron-beam parameters on the radiation-induced formation of graphitic onions. Ultramicroscopy 1995. [DOI: 10.1016/0304-3991(95)00074-x] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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74
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Merli P, Migliori A, Nacucchi M, Govoni D, Mattei G. On the resolution of semiconductor multilayers with a scanning electron microscope. Ultramicroscopy 1995. [DOI: 10.1016/0304-3991(95)00069-6] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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75
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Dum�nil G, Mattei G, Sergent M, Bertrand J, Laget M, Phan-Tan-Luu R. Application of a Doehlert experimental design to the optimization of microbial degradation of crude oil in sea water by continuous culture. Appl Microbiol Biotechnol 1988. [DOI: 10.1007/bf00251777] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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76
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Pagannone M, Fornari B, Mattei G. Molecular structure and orientation of chemisorbed aromatic carboxylic acids: Surface enhanced Raman spectrum of benzoic acid adsorbed on silver sol. ACTA ACUST UNITED AC 1987. [DOI: 10.1016/0584-8539(87)80143-5] [Citation(s) in RCA: 71] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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77
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Bertrand JC, Mattei G, Parra C, Giordani R, Gilewicz M. Influence of oxygen on the microsomal electron transport system in Saccharomyces cerevisiae. Biochimie 1984; 66:583-8. [PMID: 6442167 DOI: 10.1016/0300-9084(84)90155-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
The influence of oxygen on the level of microsomal electron transport chain components has been studied during the growth of Saccharomyces cerevisiae. Enzyme activities and cytochrome content were assayed in microsomal fractions prepared from a protoplast lysate free from mitochondrial contamination. It was found that the cytochrome P-450 and cytochrome b5 content, to get her with the NADPH-cytochrome (P-450)-reductase and NADH-cytochrome (b5)-reductase activities, were increased in the cells as the pO2 of the medium was decreasing. At the same time an increase in the membrane surface of the endoplasmic reticulum can be observed.
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78
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Bertrand JC, Rambeloarisoa E, Rontani JF, Giusti G, Mattei G. Microbial degradation of crude oil in sea water in continuous culture. Biotechnol Lett 1983. [DOI: 10.1007/bf01184950] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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79
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Mattei G, Di Nuovo S, Rossi P. [Clinical study of acetyldigoxin]. Minerva Cardioangiol 1972; 20:290-6. [PMID: 5024116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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80
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Dioguardi N, Lotto A, Levi GF, Rota M, Proto C, Mannucci PM, Rossi P, Lomanto B, Mattei G, Fiorelli G, Agostini A. Controlled trial of streptokinase and heparin in acute myocardial infarction. Lancet 1971; 2:891-5. [PMID: 4106657 DOI: 10.1016/s0140-6736(71)92501-3] [Citation(s) in RCA: 65] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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81
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Rossi P, Floris B, Giovannini E, Gianpaolo P, Piccardo G, Mattei G, Morabito A. [Temporary electric stimulation of the heart in acute and chronic atrio-ventricular blocks]. CUORE E CIRCOLAZIONE 1969; 53:300-12. [PMID: 5401036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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82
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Rossi P, Floris B, Piccardo G, Giovannini E, Malinconico U, Mattei G. [Xylocaine in the treatment of some cardiac arrhythmias]. CUORE E CIRCOLAZIONE 1969; 53:233-42. [PMID: 5369757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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83
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Rossi P, Floris B, Piccardo G, Giovannini E, De Rubertis C, Mattei G. [Pharmacological therapy and temporary intracardiac electrostimulation in treatment of atrioventricular block in acute myocardial infarct]. ATTI DELLA SOCIETA ITALIANA DI CARDIOLOGIA 1969; 2:282-5. [PMID: 5406544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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