Molecular Magnetic Materials On Solid Surfaces

Author : Matteo Mannini
Publisher : Firenze University Press
Page : 162 pages
File Size : 44,5 Mb
Release : 2009
Category : Science
ISBN : 9788884539007

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Molecular Magnetic Materials on Solid Surfaces by Matteo Mannini Pdf

This PhD thesis summarises a study of the nanostructuration of single molecule magnets and organic radicals on metallic surfaces, carried out by the author in collaboration with a number of research groups in Italy, France, Germany and Israel. A tailored approach was followed to graft individual molecules to the surface, to characterise the morphology of the functionalised surfaces with standard scanning probe microscopy and to investigate their magnetic properties using X-Ray circular dichroism. The aim of this project was to develop the initial basis for the organisation and addressing of magnetic molecules with a view to the development of single molecule devices for data storage and molecular-spintronic applications.

Author : Barbara Sieklucka,Dawid Pinkowicz
Publisher : John Wiley & Sons
Page : 512 pages
File Size : 50,7 Mb
Release : 2016-11-01
Category : Science
ISBN : 9783527694204

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Molecular Magnetic Materials by Barbara Sieklucka,Dawid Pinkowicz Pdf

A comprehensive overview of this rapidly expanding interdisciplinary field of research. After a short introduction to the basics of magnetism and molecular magnetism, the text goes on to cover specific properties of molecular magnetic materials as well as their current and future applications. Design strategies for acquiring molecular magnetic materials with desired physical properties are discussed, as are such multifunctional materials as high Tc magnets, chiral and luminescent magnets, magnetic sponges as well as photo- and piezo-switching magnets. The result is an excellent resource for materials scientists, chemists, physicists and crystal engineers either entering or already working in the field.

Author : Barbara Sieklucka,Dawid Pinkowicz
Publisher : John Wiley & Sons
Page : 508 pages
File Size : 55,6 Mb
Release : 2017-01-17
Category : Science
ISBN : 9783527339532

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Molecular Magnetic Materials by Barbara Sieklucka,Dawid Pinkowicz Pdf

A comprehensive overview of this rapidly expanding interdisciplinary field of research. After a short introduction to the basics of magnetism and molecular magnetism, the text goes on to cover specific properties of molecular magnetic materials as well as their current and future applications. Design strategies for acquiring molecular magnetic materials with desired physical properties are discussed, as are such multifunctional materials as high Tc magnets, chiral and luminescent magnets, magnetic sponges as well as photo- and piezo-switching magnets. The result is an excellent resource for materials scientists, chemists, physicists and crystal engineers either entering or already working in the field.

Author : Cristina Polito
Publisher : Firenze University Press
Page : 70 pages
File Size : 48,5 Mb
Release : 2011
Category : Medical
ISBN : 9788866550372

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Molecular Imaging in Parkinson's Disease by Cristina Polito Pdf

The present work explores brain functional changes in drug-naïve Parkinson's disease (PD) patients by means of molecular imaging techniques. Thirty-one consecutive drug-naïve PD patients from the Neurological Clinic of the University of Flor-ence underwent clinical assessment, neuropsychological assessment, MRI, [123I]FP-CIT SPECT, [18F]FDG PET. First, [18F]FDG-PET was employed to identify in drug-naïve PD patients brain metabolic alteration uniquely related to disease process and not modulated by anti-parkinsonian therapeutic intervention. Second, [18F]FDG-PET and [123I]FP-CIT SPECT were employed together to explore the early functional changes in brain function related to dopaminergic depletion in the putamen and in the caudate nucleus.

Author : Elisabetta Coppi
Publisher : Firenze University Press
Page : 194 pages
File Size : 53,9 Mb
Release : 2009
Category : Medical
ISBN : 9788884539045

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Purines as transmitter molecules. Electrophysiological studies on purinergic signalling in different cell systems by Elisabetta Coppi Pdf

Purinergic nucleotides and nucleosides (ATP, ADP, AMP and adenosine) are essential intracellular metabolites involved in a number of cellular processes, from energy supply to protein phosphorylation. However, in the last years, several studies demonstrated their involvement in cell signalling by the activation of specific membrane receptors (P1 and P2) and their role as neurotransmitters began to be investigated. The present work was aimed to clarify the effects of purinergic neurotransmission in different cell systems by using electrophysiological techniques. Relevant results of this research include the observation that P1 and P2 receptors play a deleterious role during "in vitro" ischemia in the rat brain, and the first demonstration of P2 receptor expression and function in a line of adult human mesenchymal stem cells.

Author : Sibel A. Ozkan,Afzal Shah
Publisher : Academic Press
Page : 430 pages
File Size : 43,9 Mb
Release : 2019-05-22
Category : Medical
ISBN : 9780128163788

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New Developments in Nanosensors for Pharmaceutical Analysis by Sibel A. Ozkan,Afzal Shah Pdf

New Developments for Nanosensors in Pharmaceutical Analysis presents an overview of developments in nanosensor usage in pharmaceutical analysis, thereby helping pharmaceutical companies attain reliable, precise, and accurate analysis of pharmaceuticals. This book presents very simple, precise, sensitive, selective, fast, and relatively inexpensive methods for pre-treatment, prior to analysis. These methods may be considered for further application in clinical studies and assays. The book includes the manufacturing of sensors for pharmaceutical analysis at nano- or smaller scales, and gives simple and relatable designs for the fabrication of sensors. Twelve chapters cover an introduction to the topic, immobilization techniques, mechanism effect of nanomaterials on structure, optical nanosensors for pharmaceutical detection, chemical nanosensors in pharmaceutical analysis, noble metal nanoparticles in electrochemical analysis of drugs, photo-electrochemical nanosensors for drug analysis, molecularly imprinted polymer based nanosensors for pharmaceutical analysis, nanomaterials for drug delivery systems, nanomaterials enriched nucleic acid-based biosensors, nanosensors in biomarker detection, and nanomaterials-based enzyme biosensors for electrochemical applications. Presents nanosensor types, synthesis, immobilizations and applications in different fields Gives simple repeatable designs for the fabrication of sensors for pharmaceutical analysis Details how to carry out sensitive analysis of pharmaceuticals using nanosensors Describes how to synthesize and immobilize nanosensors, and how nanosensors can be applied in drug assay Proposes innovative ways to optimize pharmaceutical processes with nanosensors

Author : Jinkui Tang,Peng Zhang
Publisher : Springer
Page : 211 pages
File Size : 48,9 Mb
Release : 2015-04-24
Category : Science
ISBN : 9783662469996

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Lanthanide Single Molecule Magnets by Jinkui Tang,Peng Zhang Pdf

This book begins by providing basic information on single-molecule magnets (SMMs), covering the magnetism of lanthanide, the characterization and relaxation dynamics of SMMs and advanced means of studying lanthanide SMMs. It then systematically introduces lanthanide SMMs ranging from mononuclear and dinuclear to polynuclear complexes, classifying them and highlighting those SMMs with high barrier and blocking temperatures – an approach that provides some very valuable indicators for the structural features needed to optimize the contribution of an Ising type spin to a molecular magnet. The final chapter presents some of the newest developments in the lanthanide SMM field, such as the design of multifunctional and stimuli-responsive magnetic materials as well as the anchoring and organization of the SMMs on surfaces. In addition, the crystal structure and magnetic data are clearly presented with a wealth of illustrations in each chapter, helping newcomers and experts alike to better grasp ongoing trends and explore new directions. Jinkui Tang is a professor at Changchun Institute of Applied Chemistry, Chinese Academy of Sciences. Peng Zhang is currently pursuing his PhD at Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, with a specific focus on the molecular magnetism of lanthanide compounds under the supervision of Prof. Jinkui Tang.

Author : Peter Day,Alan E Underhill
Publisher : Royal Society of Chemistry
Page : 332 pages
File Size : 41,5 Mb
Release : 2007-10-31
Category : Science
ISBN : 9781847551399

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Metal-Organic and Organic Molecular Magnets by Peter Day,Alan E Underhill Pdf

Traditionally, magnetic materials have been metals or, if inorganic compounds such as oxides, of continuous lattice type. However, in recent years chemists have synthesized increasing numbers of crystalline solids based on molecular building blocks in the form of coordination and organometallic complexes or purely organic molecules, which exhibit spontaneous magnetization. In striking contrast to conventional magnets, these materials are made from solutions close to room temperature rather than by metallurgical or ceramic methods. This book, which originates from contributions to a Discussion Meeting of The Royal Society of London, brings together many of the leading international practitioners in the field, who survey their own recent work and place it in the context of the wider fields of magnetism and supramolecular chemistry. All aspects of molecular-based magnets are addressed, including synthesis, structure-property relations and physical properties. Contents include details of the characterization of the first purely organic ferromagnet, the synthesis of high coercivity materials and a unique description of new materials with Curie temperatures well above ambient. A coherent survey of this rapidly developing field for the more general reader, Metal-Organic and Organic Molecular Magnets will also be welcomed by researchers and lecturers in materials science and inorganic or solid state chemistry.

Author : Laura Colzi
Publisher : Firenze University Press
Page : 232 pages
File Size : 55,5 Mb
Release : 2022
Category : Science
ISBN : 9788855183796

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Isotopic fractionation study towards massive star-forming regions across the Galaxy by Laura Colzi Pdf

One of the most important tools to investigate the chemical history of our Galaxy and our own Solar System is to measure the isotopic fractionation of chemical elements. In the present study new astronomical observations devoted to the study of hydrogen and nitrogen fractionation (D/H and 14N/15N ratios) of molecules, towards massive star-forming regions in different evolutionary phases, have been presented. Moreover, a new detailed theoretical study of carbon fractionation, 12C/13C ratios, has been done. One of the main results was the confirmation that the 14N/15N ratio increases with the galactocentric distance, as predicted by stellar nucleosynthesis Galactic chemical evolution models. This work gives new important inputs on the understanding of local chemical processes that favor the production of molecules with different isotopes in star-forming regions.

Author : Raffaella Valenti
Publisher : Firenze University Press
Page : 184 pages
File Size : 51,7 Mb
Release : 2018
Category : Electronic
ISBN : 9788864537788

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Cerebral Small Vessel Disease and Cerebral Amyloid Angiopathy by Raffaella Valenti Pdf

Author : Dalila De Vita
Publisher : Firenze University Press
Page : 68 pages
File Size : 44,5 Mb
Release : 2022
Category : Medical
ISBN : 9788855183437

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Functional validation of genetic variants identified by next generation sequencing in malformations of cortical development by Dalila De Vita Pdf

Malformations of cortical development (MCDs) result from a disruption in the process of the human brain cortex formation: currently, there are no pharmacological treatments for diffuse MCDs. Next-generation sequencing has accelerated the identification of MCDs causing genes: in some cases, functional studies are needed to clarify the role of genetic variants. The aim of this PhD project has been to apply a multidisciplinary approach to identify causative mutations in patients with MCDs, validate the pathogenic role of the identified mutations, and assess the effectiveness of novel in vitro treatment for mTOR pathway related MCDs.

Author : Maria Di Rosa
Publisher : Firenze University Press
Page : 224 pages
File Size : 47,7 Mb
Release : 2022
Category : Science
ISBN : 9788855184199

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Tectono-metamorphic evolution of the continental units along the edge between Alpine and Hercynian Corsica by Maria Di Rosa Pdf

In this work the central area of Corsica island was studied in order to reconstruct the tectono-metamorphic history of the continental and oceanic high pressure units that occupy the structurally deeper levels of the tectonic stacking of Alpine Corsica and their stratigraphic and structural relationship with the European margin (Hercynian Corsica). The study includes the geological mapping, the mesoscale and microscale structural analysis, the acquisition of chemical analyzes and micromaps with the microprobe, thermobarometric estimation through specific methodologies for metapelites, U-Th-Pb dating of zircons and allanites. The results obtained allows to reconstruct the geodynamic model of this sector of the Alpine belt from the Permian to the Burdigalian.

Author : Enzo Marino
Publisher : Firenze University Press
Page : 232 pages
File Size : 53,8 Mb
Release : 2010
Category : Coastal engineering
ISBN : 9788866550518

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An Integrated Nonlinear Wind-Waves Model for Offshore Wind Turbines by Enzo Marino Pdf

This thesis presents a numerical model capable of simulating offshore wind turbines exposed to extreme loading conditions. External condition-based extreme responses are reproduced by coupling a fully nonlinear wave kinematic solver with a hydro-aero-elastic simulator. First, a two-dimensional fully nonlinear wave simulator is developed. The transient nonlinear free surface problem is formulated assuming the potential theory and a high-order boundary element method is implemented to discretize Laplace's equation. For temporal evolution a second-order Taylor series expansion is used. The code, after validation with experimental data, is successfully adopted to simulate overturning plunging breakers which give rise to dangerous impact loads when they break against wind turbine substructures. Emphasis is then placed on the random nature of the waves. Indeed, through a domain decomposition technique a global simulation framework embedding the numerical wave simulator into a more general stochastic environment is developed. The proposed model is meant as a contribution to meet the more and more pressing demand for research in the offshore wind energy sector as it permits taking into account dangerous effects on the structural response so as to increase the global structural safety level.

Author : Francesca Di Patti
Publisher : Firenze University Press
Page : 128 pages
File Size : 53,8 Mb
Release : 2010
Category : Science
ISBN : 9788884539762

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Finite-Size Effects in Stochastic Models of Population Dynamics: Applications to Biomedicine and Biology by Francesca Di Patti Pdf

Author : Giovanni Colica
Publisher : Firenze University Press
Page : 128 pages
File Size : 51,6 Mb
Release : 2009
Category : Science
ISBN : 9788884539434

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Use of Microorganisms in the Removal of Pollutants from the Wastewater by Giovanni Colica Pdf

The aims of this thesis were to test the adsorption efficiency of cyanobacterial biomasses of polysaccharide producing strains and to realize a pilot plant for galvanic waste treatment based on biosorption. First of all the different strains were tested at laboratory scale with solutions containing one or more metals, in order to gradually approach the reality of galvanic industries, where several metals at different concentrations are present at the same time in the wastes. To realize the pilot plant we tried to combine the protocols established during laboratory experiments with the necessities of the final user, the industry, by designing and realizing three prototypes. It was moreover evaluated the possibility to recover the adsorbed metal in a form easy and convenient for recycling.