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238篇 您的检索式:作者名="Altamura"
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1Post-synthesis phase and shape evolution of CsPbBr3 colloidal nanocrystals: The role of ligands显示文摘The surface chemistry of colloidal cesium lead bromide (CsPbBr3) nanocrystals is decisive in determining the stability and the final morphology of this class of materials,characterized by ionic structure and a high defect tolerance factor.Here,the high sensitivity of purified colloidal nanocubes of CsPbBr3 to diverse environmental condition (solvent dilution,ageing,ligands post synthetic treatment) in ambient atmosphere is investigated by means of a comprehensive morphological (electron microscopy),structural (θ/2θ X-ray diffraction (XRD) and grazing incidence wide angle scattering (GIWAXS)),and spectroscopic chemical (1H nuclear magnetic resonance (NMR),nuclear Overhauser effect spectroscopy (NOESY),absorption and emission spectroscopy) characterization.The aging and solvent dilution contribute to modify the nanocrystal morphology,due to a modification of the ligand dynamic.Moreover,we establish the ability of aliphatic carboxylic acids and aikyl amines ligands to induce,even in a post preparative process at room temperature,structural,morphological and spectroscopic variations.Upon post synthesis alkyl amine addition,in particular of oleyl amine and octyl amine,the highly green emitting CsPbBr3 nanocubes effectively tum into one-dimensional (1 D) thin tetragonal nanowires or lead halide deficient rhombohedral zero-dimensional (0D) Cs4PbBr6 structures with a complete loss of fluorescence.The addition of an alkyl carboxylic acid,as oleic and nonanoic acid,produces the transformation of nanocubes into still emitting orthorombic two-dimensional (2D) nanoplates.The acid/base equilibrium between the native and added ligands,the edsorbed/free ligands dynamic in solution and the ligand solubility in non-polar solvent contribute to render CsPbBr3 particularly sensitive to environmental and processing conditions and,therefore prone to undergo to structural,morphological and,hence spectroscopic,transformations.Elisabetta Fanizza Francesca Cascella Davide Altamura Cinzia Giannini Annamaria Panniello Leonardo Triggiani Francesca Panzarea Nicoletta Depalo Roberto Grisorio Gian Paolo Suranna Angela Agostiano M.Lucia Curri Marinella Striccoli 2019Nano Research2019,12,5:2
2ABCB1 and ABCB19 auxin transporters have synergistic effects on early and late Arabidopsis anther development显示文摘Arabidopsis abcb1 abcb19 double mutants defective in the auxin transporters ABCB1/PGP1 and ABCB19/PGP19 are altered in stamen elongation, anther dehiscence and pollen maturation. To assess the contribution of these transporters to stamen development we performed phenotypic, histological analyses, and in situ hybridizations on abcb1 and abcb19 single mutant fl owers. We found that pollen maturation and anther dehiscence are precocious in the abcb1 but not in the abcb19 mutant. Accordingly, endothecium ligni fication is altered only in abcb1 anthers. Both abcb1 and abcb1 abcb19 stamens also show altered early development, with asynchronous anther locules and a multilayer tapetum. DAPI staining showed that the timing of meiosis is asynchronous in abcb1 abcb19 anther locules, while only a small percentage of pollen grains are nonviable according to Alexander's staining. In agreement, TAM(TARDY ASYNCHRONOUS MEIOSIS), as well as BAM2(BARELY ANY MERISTEM)—involved in tapetal cell development—are overexpressed in abcb1 abcb19 young fl ower buds. Corre spondingly, ABCB1 and ABCB19 mRNA localization supports the observed phenotypes of abcb1 and abcb1 abcb19 mutant anthers. In conclusion, we provide evidence that auxin transport plays a signi ficant role both in early and late stamen development: ABCB1 plays a major role during anther development, while ABCB19 has a synergistic role.Valentina Cecchetti Patrizia Brunetti Nadia Napoli Laura Fattorini Maria Maddalena Altamura Paolo Costantino Maura Cardarelli 2015Journal of Integrative Plant Biology2015,57,12:2
3Integrin-targeting with peptide-bioconjugated semiconductor-magnetic nanocrystalline heterostructures显示文摘二进制不对称的 nanocrystals (BNC ) ,加入的光敏的 TiO 2 nanorod 填写了 superparamagnetic -Fe2O3 球形的领域,在聚乙烯乙二醇被嵌入修改 phospholipid micelle 并且成功地 bioconjugated 到包含一个 RGD 主题的合适设计的肽。BNC 表示由于在一个粒子的二个不同领域的共存,相关多功能的 nanomaterial 由高 photoactivity 和磁性描绘了,那特别地在生物成像用作光线疗法和过高热代理人以及一根磁性的探针被适合。我们选择了 RGD 主题以便指向在激活的 endothelial 房间和癌症房间的几种类型上表示的 integrin。准备 RGD-peptide/BNC 结合,包括地由使用互补光、结构的技术监视了,在生物媒介表明了高稳定性和一致可分散性。RGD-peptide/BNC 的 cytotoxicity 结合在 vitro 被学习。RGD 肽的细胞的举起在房间结合,在房间 lysates 借助于二条不同途径,也就是共焦的显微镜学分析和排放光谱学决心估计了, RGD-peptide-BNC 的显示的选择为 v3 integrin 结合。这些 RGD-peptide-BNC 结合为癌症的 theranostic 治疗有一个高潜力。Gianpiero Valente Nicoletta Depalo Ivan de Paola Rosa Maria lacobazzi Nunzio Denora Valentino Laquintana Roberto Comparelli Emiliano Altamura Tiziana Latronico Michele Altomare Elisabetta Fanizza Marinella Striccoli Angela Agostiano Michele Saviano Annarita Del Gatto Laura Zaccaro Maria Lucia Curri 2016Nano Research2016,9,3:2
4Impact of closed-loop stimulation,overdrive pacing,DDDR pacing mode on atrial tachyarrhythmia burden in brady-tachy syndrome:A randomized study显示文摘Puglisi A Altamura G Capestro F 2003Eur Heart J2003,24,:1
5The second AT-hook of the architectural tran- scription factor HMGA2 is determinant for nuclear localization and function显示文摘GIACOMO CATFARUZZI SANDRO ALTAMURA MICHELA A TESSARI et at 2007Nucleic Acids Research2007,35,6:1
6A novel series of potent and selective ketone histone deacetylase inhibitors with antitumor activity in vivo显示文摘Jones P Altamura S Francesco R 2008J Med Chem2008,51,:1
7Carotid wall thickness and stroke risk in patients with asymptomatic internal carotid stenosis显示文摘Mauro Silvestrini Claudia Cagnetti Patrizio Pasqualetti Carlo Albanesi Claudia Altamura Chiara Lanciotti Marco Bartolini Francesca Mattei Leandro Provinciali Fabrizio Vernieri 2010Atherosclerosis2010,,2:1
8Inactivation of the phloem-specific Dof zinc finger gene DAG1 affects response to light and integrity of the testa of Arabidopsis seeds 显示文摘Papi M Sabatini S Altamura M M Hennig L Schafer E Costantino P Vittorioso P 2002Plant Physiology2002,128,2:1
9Severe carotid stenosis and impaired cerebral hemodynamics can influence cognitive deterioration 显示文摘BALESTRINI S PEROZZI C ALTAMURA C 2013Neurology2013,80,23:1
10Quetiapine and classical mood stabilizers in the long-term treatment ofbipolar disorder: a 4-year follow-up naturalistic study 显示文摘Altamura AC Mundo E Dell'Osso B 2008J Affect Disord2008,110,12:1
11Transcriptional Activation of the Cyclin A Gene by the Architectural Transcription Factor HMGA2显示文摘Tessari MA Gostissa M Altamura S 0,,24:1
12Transcrip- tional activation of the cyclin A gene by the architectural tran- scription factor HMGA2显示文摘TESSAR IM A GOSTISSA M ALTAMURA S et at 2003Mol Cell Biol2003,23,24:1
13A rapid and quantitative assay for measuring antibody-mediated neutralization of West Nile virus infection显示文摘Theodore C. Pierson Melissa D. Sánchez Bridget A. Puffer Asim A. Ahmed Brian J. Geiss Laura E. Valentine Louis A. Altamura Michael S. Diamond Robert W. Doms 2005Virology2005,,1:1
14Auxin photoperiod and puterscine affect flower information in normal and rolbtransformed tobacco thin cell layers显示文摘ALTAMURA M M TOMASSI M 1998Plant Physiol Biochem1998,36,6:1
15Guidelines for depot antipsychotic treatment in schizophrenia显示文摘KANE JM AGUGLIA E ALTAMURA AC 1998Eur Neuropsychopharmacol1998,8,1:1
16What is the relationship among atherosclerosis markers,apolipoprotein E polymorphism and dementia?显示文摘Altamura C Squitti R Pasqualetti P 2007Eur J Neurol2007,14,:1
17Metall-opro- teinases-2, -9 and TIMP-1 expression in stable and unstable coronary plaques undergoing PCI 显示文摘Fiotti N Altamura N Orlando C 2008Int J Cardiol2008,127,3:1
18Diffusion - weighted lesions after carotid artery stenting are associated with cognitive impairment显示文摘MAGGIO P ALTAMURA C LANDI D 2013J Neurol Sci2013,328,12:1
19Alcohol reduces MMP- 2 in humans and isolated smooth muscle Cells显示文摘Fiotti N Tubaro F Altamura N 2008Alcohol2008,42,5:1
20Augmentative transcranial magnetic stimulation(TMS)eombined with brain navigation in drug resis- tant rapid cycling bipolar depression:A case report of acute and maintenance efficacy显示文摘Dell'osso B Altamura A C 2009World J Biol Psychiatry2009,10,4:1
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