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  • ENEA - Centro Ricerche Trisaia
    è Se questo non fosse possibile ad esempio perché hai dimenticato il tuo nome utente o perché hai cambiato indirizzo email contatta l amministrazione del sito Il Centro La storia La trisaia in cifre Dove siamo Visite al Centro Dati naturalistici Sito archeologico Tour virtuale Registrazione EMAS Attività di Ricerca Biotecnologie Fonti rinnovabili Tecnologie ambientali Tecnologie dei materiali Radioprotezione I Consorzi Laboratori e Impianti Agrobiopolis Hall Tecnologica di Gassificazione Impianto

    Original URL path: http://www.trisaia.enea.it/acl_users/credentials_cookie_auth/mail_password_form?userid= (2016-02-10)
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  • ENEA - Centro Ricerche Trisaia
    consisting of a signal contributes to the NMR spectrum An analysis of the spectrum is therefore possible to obtain information on the quality and quantity of substances that constitute the mixture CHEMICAL REACTIONS In the event of a chemical reaction takes place in time more than a few minutes you can follow the reaction by NMR as a function of time determining the quality and quantity of both reagents and reaction products of identifying the presence and role of intermediate reaction In the case of faster reactions can still follow the reaction in the case where this can be interrupted periodically Characterization of the metabolism of plant and animal species The NMR analysis of biological fluids can get information on the metabolic content of living organisms By inducing different kinds of stress or by changing the power you can follow as you change your metabolism It is also possible to make correlations between the content and the possible metabolic disease state of an organism This may provide a valuable method for early diagnosis of certain diseases and non invasive PROFILING Since the chemical content profile characterizes the single living organism can be used to locate its chemical profile Then you can use the chemical profile as a barcode for sample identification In addition it is possible using appropriate statistical techniques to classify the chemical profiles in classes For example using the profile NMR can determine the geographical origin botanical and zoological animals and plants of different products In the case of NMR profiling there is a need to identify individual compounds present in the profile but simply using the spectrum as a bar code RELEASE OF ACTIVE SUBSTANCES BY MATERIAL Some materials are called active because of their ability to release or adsorb chemicals in a controlled way to or

    Original URL path: http://www.trisaia.enea.it/en/attivita-di-ricerca/laboratori-e-impianti/laboratori-biotecnologici/laboratorio-di-risonanza-magnetica-nucleare/laboratorio-di-risonanza-magnetica-nucleare-1/laboratorio-di-risonanza-magnetica-nucleare/nmr-ad-alta-risoluzione-di-liquidi (2016-02-10)
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  • ENEA - Centro Ricerche Trisaia
    SYSTEMS The study of porous systems is via NMR diffusive and thermodynamic properties and magnetic relaxation of molecules of a liquid inside the pores In fact the relaxation times and freezing of the liquid depend on the size of the pores The freezing point curves of the liquid can be easily followed in NMR because the liquid phase and solid phase substances contained in the pores of the signals have very different widths In fact it is possible to correlate relaxation times and freezing curves with the porosity of the system The diffusive properties allow you to have more detailed information involving the size geometry and the interconnection between the pores In particular NMR can measure the mean square displacement x 2 of the solvent molecules as a function of time to get this information on the geometry of the system even if it is of such fractional fractal HETEROGENEOUS SYSTEMS The first source of information on the type of gaming heterogeneous liquid liquid liquid solid liquid solid gas comes from the NMR spectrum allows to estimate the composition and dynamics of each phase Moreover as in the case of porous systems the study of diffusive and relaxation properties of the liquid phase formed information on the structure and dynamics of the system POLYSACCHARIDES The polysaccharides in the presence of water can be dispersed both solutions and gels The composition structure and dynamics of these systems can be studied by HR MAS In particular the gel can be elucidated gellificazione mechanisms through the study of diffusion relaxation and chemical shift These mechanisms are of fundamental importance in various fields such as food pharmaceutical chemical and medical TRANSITION PHASE Most of the phase transitions involve drastic changes in the internal dynamics of the constituents The extent of relaxation times and the

    Original URL path: http://www.trisaia.enea.it/en/attivita-di-ricerca/laboratori-e-impianti/laboratori-biotecnologici/laboratorio-di-risonanza-magnetica-nucleare/laboratorio-di-risonanza-magnetica-nucleare-1/laboratorio-di-risonanza-magnetica-nucleare/nmr-ad-alta-risoluzione-di-semisolidi-high-resolution-magic-angle-spinning-hr-mas (2016-02-10)
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  • ENEA - Centro Ricerche Trisaia
    detailed level of information is obtained on the conformation of polymer that can be extracted from the chemical shift The organization of the polymer chains to a larger scale length 20 200A can be measured by exploiting the phenomenon of spin diffusion Since polymers in different environments have different molecular dynamics and hence different NMR relaxation times is possible to study and observe selectively multiphase polymer solid polymer crystalline phase amorphous rubber and interfacial regions In addition some polymers are stable in more than a single conformation and the crystalline solid state NMR provides an effective means to monitor solid solid transitions Aluminum silicon In the study of alumino silicates such as zeolites pozzolana cement ceramics etc spectroscopy joint 17Al 29Si and 23Na provides important information on the crystalline structure and defects in such materials In particular it is possible to evaluate the relationship Si Al symmetry and the degree of coordination of each atom and the composition of the cell POLYSACCHARIDES NMR can study the composition of lignin cellulosic material In particular it is possible to determine the content of cellulose lignin hemicellulose and other polysaccharides present in the fiber and to study the mobility and structure As in the more general case of the polymers can be observed selectively crystalline regions the interfacial amorphous and those that constitute the microfibrils of the fiber plant In addition through the phenomenon of spin diffusion is possible to characterize the extent of micro regions where the cellulose is distributed in the different phases showing the regions in which the polysaccharide is exposed to water COMPOSITE MATERIALS In the case of composite materials is possible to determine the size of the domains of each component consider the type of interaction that exists between them and its dynamics In addition when the composite

    Original URL path: http://www.trisaia.enea.it/en/attivita-di-ricerca/laboratori-e-impianti/laboratori-biotecnologici/laboratorio-di-risonanza-magnetica-nucleare/laboratorio-di-risonanza-magnetica-nucleare-1/laboratorio-di-risonanza-magnetica-nucleare/nmr-ad-alta-risoluzione-di-solidi (2016-02-10)
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  • ENEA - Centro Ricerche Trisaia
    particular hydrogen The relaxation times are sensitive to various chemical and physical factors and in particular to the dynamics and structure of nuclei in materials in which they are inserted From the measurement of relaxation times and especially their distribution is possible to obtain important information In the case of porous systems containing a solvent is possible to connect the magnetic relaxation to the porosity and tortuosity of the system and possibly to assess the state of the liquid in terms of inhibitory connections with the solid structure Information obtained through rilassometria are useful in various disciplines such as materials science the food industry and the cultural heritage Unlike the high resolution NMR riloassometria requires relatively inexpensive equipment and especially laptops This allows you to perform NMR analysis on site in industrial environments back Il Centro La storia La trisaia in cifre Dove siamo Visite al Centro Dati naturalistici Sito archeologico Tour virtuale Registrazione EMAS Attività di Ricerca Biotecnologie Fonti rinnovabili Tecnologie ambientali Tecnologie dei materiali Radioprotezione I Consorzi Laboratori e Impianti Agrobiopolis Hall Tecnologica di Gassificazione Impianto CRISMAT Impianto Steam Explosion Impianto Terre Rare Istituto di Radioprotezione Laboratori Biomasse Laboratori Biotecnologici Laboratorio Solare Metrologia Monitoraggio ambientale Stazione Laser Trattamento

    Original URL path: http://www.trisaia.enea.it/en/attivita-di-ricerca/laboratori-e-impianti/laboratori-biotecnologici/laboratorio-di-risonanza-magnetica-nucleare/laboratorio-di-risonanza-magnetica-nucleare-1/laboratorio-di-risonanza-magnetica-nucleare/rilassometria-nmr (2016-02-10)
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