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Boccalon E, Nocchetti M, Pica M, Romani A, Casciola M. Layered double hydroxide and zirconium phosphate as ion exchangers for the removal of ‘black crusts’ from the surface of ancient monuments. Dalton Trans 2018; 47:2976-2985. [DOI: 10.1039/c7dt03957c] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two ion exchanger solids (LDH and ZrP) as an innovative tool to remove gypsum from ancient monuments.
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Affiliation(s)
- E. Boccalon
- Dipartimento di Chimica Biologia e Biotecnologie
- University of Perugia
- 06123 Perugia
- Italy
| | - M. Nocchetti
- Dipartimento di Scienze Farmaceutiche
- University of Perugia
- Perugia
- Italy
| | - M. Pica
- Dipartimento di Scienze Farmaceutiche
- University of Perugia
- Perugia
- Italy
| | - A. Romani
- Dipartimento di Chimica Biologia e Biotecnologie
- University of Perugia
- 06123 Perugia
- Italy
| | - M. Casciola
- Dipartimento di Chimica Biologia e Biotecnologie
- University of Perugia
- 06123 Perugia
- Italy
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Denzi A, Merla C, Casciola M, Hwang JCM, Cheng X, Apollonio F, Liberti M. Microchambers for cell exposure: from the design to applications. Annu Int Conf IEEE Eng Med Biol Soc 2017; 2016:4232-4235. [PMID: 28269216 DOI: 10.1109/embc.2016.7591661] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
In the last decades, the advances in the micro and nano fabrication techniques have led to the development of microdevices that improved the possibility of analysis at cell level. These devices can be used in different applications (e.g., cell detection and identification, manipulation, cell treatments). The requisites, that are necessary to achieve, are different for various applications and represent the starting point of the project. The numerical multiphysics models can be very advantageous to analyze the performances of such devices and to predict their operation. Aim of this work is to give a look of the design rules of microchamber devices in particular for their application in electric field exposure. Two different applications for cell discrimination and characterization are reported considering time and frequency domain measurements.
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Casciola M, Bonhenry D, Liberti M, Apollonio F, Tarek M. A molecular dynamic study of cholesterol rich lipid membranes: comparison of electroporation protocols. Bioelectrochemistry 2014; 100:11-7. [DOI: 10.1016/j.bioelechem.2014.03.009] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2013] [Revised: 03/20/2014] [Accepted: 03/20/2014] [Indexed: 01/25/2023]
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Merla C, Denzi A, Paffi A, Casciola M, d'Inzeo G, Apollonio F, Liberti M. Novel passive element circuits for microdosimetry of nanosecond pulsed electric fields. IEEE Trans Biomed Eng 2012; 59:2302-11. [PMID: 22692873 DOI: 10.1109/tbme.2012.2203133] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Microdosimetric models for biological cells have assumed increasing significance in the development of nanosecond pulsed electric field technology for medical applications. In this paper, novel passive element circuits, able to take into account the dielectric dispersion of the cell, are provided. The circuital analyses are performed on a set of input pulses classified in accordance with the current literature. Accurate data in terms of transmembrane potential are obtained in both time and frequency domains for different cell models. In addition, a sensitivity study of the transfer function for the cell geometrical and dielectric parameters has been carried out. This analysis offers a new, simple, and efficient tool to characterize the nsPEFs' action at the cellular level.
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Affiliation(s)
- C Merla
- Italian Inter-University Centre of Electromagnetic Fieldsand Bio-Systems, Italian National Agency for New Technologies, Energy,and Sustainable Economic Development, Rome, Italy.
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Di Vona M, Sgreccia E, Donnadio A, Casciola M, Chailan J, Auer G, Knauth P. Composite polymer electrolytes of sulfonated poly-ether-ether-ketone (SPEEK) with organically functionalized TiO2. J Memb Sci 2011. [DOI: 10.1016/j.memsci.2010.12.044] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Bongiovanni R, Casciola M, Di Gianni A, Donnadio A, Malucelli G. Epoxy-nanocomposites containing exfoliated zirconium phosphate: Preparation via cationic photopolymerisation and physicochemical characterisation. Eur Polym J 2009. [DOI: 10.1016/j.eurpolymj.2009.06.022] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Paciaroni A, Casciola M, Cornicchi E, Marconi M, Onori G, Pica M, Narducci R. Temperature-Dependent Dynamics of Water Confined in Nafion Membranes. J Phys Chem B 2006; 110:13769-76. [PMID: 16836322 DOI: 10.1021/jp0572176] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We performed a neutron scattering study to investigate the dynamical behavior of water absorbed in Nafion at low hydration level as a function of temperature in the range 200-300 K. To single out the spectral contribution of the confined water, the measurements were done on samples hydrated with both H(2)O and D(2)O. Due to the strong incoherent scattering cross section of hydrogen atoms with respect to deuterium, in the difference spectra, the contribution from the Nafion membrane is subtracted out and the signal originates essentially from protons in the liquid phase. The main quantities we extracted as a function of the momentum transfer are the elastic incoherent structure factor (EISF) and the line width of the quasielastic component. Their trend suggests that the motion of hydrogen atoms can be schematized as a random jumping inside a confining region, which can be related to the boundaries of the space where water molecules move in the cluster they form around the sulfonic acid site. Through the calculated EISF, we obtained information on the size of such a region, which increases up to 260 K and then attains a constant value. Above this temperature, the number of water protons that are dynamically activated in the accessible time window increases with a faster rate. The jump diffusion dynamics is characterized by a typical jumping time which is stable at 5.3 ps up to approximately 260 K and then gradually decreases. The ensemble of the findings indicates that, within the limits of the energy resolution of the present experiment, water absorbed in the Nafion membrane undergoes a dynamical transition at around 260 K. We discuss the possible relationship of this dynamical onset with the behavior of the electrical conductivity of the membrane as a function of the temperature.
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Affiliation(s)
- A Paciaroni
- Dipartimento di Fisica dell'Università di Perugia and INFM-CRS SOFT Unità di Perugia, Via A. Pascoli, I-06123 Perugia, Italy.
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Alberti G, Casciola M, Vivani R, Biswas RK. Preparation and characterization of zirconium phosphate phosphonates, ZrPO4(H2PO4)1-x(RPO2OH)x.nH2O, with .gamma.-layer structure (R = CH3, C3H7, C6H11). Inorg Chem 2002. [DOI: 10.1021/ic00073a022] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Reh�kov� M, Sopkov� A, Casciola M, Failla S. A study of the silver form of a natural zeolitic material of the clinoptilolite type. J INCL PHENOM MACRO 1995. [DOI: 10.1007/bf00708769] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Casciola M, Andersen EK, Andersen IGK, Dahl O, Nielsen M, Lehmann MS, Tokii T. Formation and Intercalation of Hexamethylenetetramine in the Layered Structure of alpha-Zirconium Phosphate. ACTA ACUST UNITED AC 1990. [DOI: 10.3891/acta.chem.scand.44-0459] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Alberti G, Bernasconi M, Casciola M. Preparation of γ-zirconium phosphate microcrystals with high degree of crystallinity and proton conductivity of their hydrogen and ammonium forms. ACTA ACUST UNITED AC 1989. [DOI: 10.1016/0923-1137(89)90110-3] [Citation(s) in RCA: 50] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Alberti G, Bernasconi M, Casciola M, Costantino U. Ion exchange of some divalent and trivalent cations on the surface of zirconium acid phosphate micro-crystals. J Chromatogr A 1978. [DOI: 10.1016/s0021-9673(00)91786-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Alberti G, Casciola M, Costantino U, Levi G. Inorganic ion exchange membranes consisting of microcrystals of zirconium phosphate supported by Kynar®. J Memb Sci 1978. [DOI: 10.1016/s0376-7388(00)83021-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Alberti G, Bertrami R, Casciola M, Costantino U, Gupta J. Crystalline insoluble acid salts of tetravalent metals—XXI ion exchange mechanism of alkaline earth metal. ACTA ACUST UNITED AC 1976. [DOI: 10.1016/0022-1902(76)80368-5] [Citation(s) in RCA: 42] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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