Armida Torreggiani, Michele Di Foggia, Immacolata Manco, Anna De Maio, Shiraz A. Markarian, Sergio Bonora,
Tópico(s): Biochemical effects in animals
2008 - Elsevier BV | Journal of Molecular Structure
Shiraz A. Markarian, Sergio Bonora, Karine Bagramyan, Valery B Arakelyan,
In this work the thermal properties of diethyl sulphoxide (Et2SO), as well as its cryoprotective ability are studied and related to other well-known cryoprotectant substances, like dimethyl sulphoxide (Me2SO). We have investigated the thermal properties of Et2SO/water systems using Differential Scanning Calorimetry at a very low heating/cooling rate (2 °C/min). Liquid/solid or glassy/crystalline transitions have been observed only for the solutions with content of Et2SO ranging from 5 up to 40% w/w ...
Tópico(s): Spectroscopy and Quantum Chemical Studies
2004 - Elsevier BV | Cryobiology
Shiraz A. Markarian, Ashkhen L. Zatikyan, Sergio Bonora, C. Fagnano,
The Raman and FT IR ATR spectra of diethylsulfoxide (DESO)-water mixtures in the SO and C–H stretching vibration regions at different molar ratios are considered. Noticeable changes are observed in the νSO region, suggesting the existence of strong H-bonds between DESO and water molecules; on the contrary the νCH bands change only in a less extent, supporting the existence of SO⋯HC hydrogen bonds in pure DESO that gradually break in the presence of water. In addition, FT IR measurements confirm ...
Tópico(s): Phase Equilibria and Thermodynamics
2003 - Elsevier BV | Journal of Molecular Structure
Shiraz A. Markarian, Liana S. Gabrielian, Sergio Bonora, C. Fagnano,
FT IR and Raman spectroscopic studies of pure diethylsulfoxide (DESO) in the liquid and in the solid states and its solutions in various solvents have been performed. Analysis of SO- and CH-stretching regions in a wide range of concentration shows that the bands may be fitted satisfactorily by considering seven components. In addition, fundamental frequencies have been assigned using ab initio calculations at the RHF/3–21G* levels. The results obtained confirm a viewpoint on a self-associative structure ...
Tópico(s): Chemical and Physical Properties in Aqueous Solutions
2003 - Elsevier BV | Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy
Shiraz A. Markarian, Liana S. Gabrielian, Sergio Bonora,
FTIR and Raman spectra analysis of pure dipropylsulfoxide (DPSO), binary mixtures of DPSO/CCl4, and DPSO/water has been first performed. The complex pattern of spectra has been explained on the basis of molecular interactions between DPSO and other molecules and, in the aqueous solutions, the role of both hydrophilic and hydrophobic interactions have been discussed depending on the concentrations. The changes in the intensities and in the frequencies of DPSO bands on concentration have been considered. ...
Tópico(s): Analytical Chemistry and Chromatography
2007 - Elsevier BV | Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy
Shiraz A. Markarian, Lilit Gabrielyan, Sergio Bonora,
Tópico(s): Chemical Thermodynamics and Molecular Structure
2010 - Springer Science+Business Media | Journal of Solution Chemistry
Sergio Bonora, Shiraz A. Markarian, Andrea Trinchero, Karine R. Grigorian,
In this paper, the DSC thermal behaviour of DMPC and DMPE liposomes in the presence of increasing amounts of both DMSO and DESO was investigated. In the presence of low amounts of both dialkylsulfoxides (DASO), the main effect was an increase in the transition temperatures, more enhanced in the presence of DMSO, together with an increase in the ΔH values, more enhanced in the presence of DESO. With a high sulfoxide content, a noticeable increase, with marked differences between the two compounds, ...
Tópico(s): Spectroscopy and Quantum Chemical Studies
2005 - Elsevier BV | Thermochimica Acta
Shiraz A. Markarian, Liana S. Gabrielian, Ashkhen L. Zatikyan, Sergio Bonora, Andrea Trinchero,
Solutions of lithium salts LiCl, LiClO4 and LiNO3 in diethylsulfoxide (DESO) have been studied by means of both FT-IR and Raman spectroscopy. The curve fitting procedure has been performed in the νSO and νCH stretching regions. The broad SO stretching bands of DESO (1100–950 cm−1) were resolved in seven or eight components by deconvolution. On the basis of the previous studies of DESO in aqueous and non-aqueous solutions, the various components are assigned to free and associated species of DESO. ...
Tópico(s): Solid-state spectroscopy and crystallography
2005 - Elsevier BV | Vibrational Spectroscopy
Sergio Bonora, Michele Di Foggia, Shiraz A. Markarian, Vitaliano Tugnoli,
In this paper, the effect of increasing amounts of DPSO on the behaviour of lecithins (DMPC, DPPC) and cephalin (DMPE) liposomes was investigated by means of Raman, FT-IR and DSC techniques. The results show that DPSO strongly affect, but in a different way, both lecithins and cephalin liposomes. In presence of low DPSO amounts, the main effect was a small decrease followed by an increase in the transition temperatures of all lipids; on the contrary, marked differences between the two classes were ...
Tópico(s): Spectroscopy and Quantum Chemical Studies
2009 - Elsevier BV | Journal of Molecular Structure
Sergio Bonora, Markarian S.a., Andrea Trinchero, Grigorian K.r.,
2005 - Elsevier BV | Thermochimica Acta
Sergio Bonora, Markarian S.a., Adriana Trinchero, Grigorian K.r.,
2005 - Elsevier BV | Thermochimica Acta
Ioannis Liodakis, Alan P. Marscher, I. Agudo, A. Berdyugin, M. Bernardos, G. Bonnoli, Г. А. Борман, C. Casadio, V. Casanova, E. Cavazzuti, Nicole Rodriguez Cavero, Laura Di Gesu, Niccolò Di Lalla, I. Donnarumma, Steven R. Ehlert, M. Errando, Juan Escudero, Maya García‐Comas, Beatriz Agı́s-González, C. Husillos, Jenni Jormanainen, Svetlana G. Jorstad, Masato Kagitani, E. N. Kopatskaya, Vadim Kravtsov, H. Krawczynski, E. Lindfors, Е. Г. Ларионова, G. Madejski, Frédéric Marin, Alessandro Marchini, Herman L. Marshall, D. A. Morozova, F. Massaro, J. Masiero, Dimitri Mawet, R. Middei, Maxwell A. Millar‐Blanchaer, I. Myserlis, Michela Negro, K. Nilsson, Stephen L. O’Dell, N. Omodei, L. Pacciani, A. Paggi, G. V. Panopoulou, Abel L. Peirson, M. Perri, Pierre-Olivier Petrucci, Juri Poutanen, Simonetta Puccetti, Roger W. Romani, Takeshi Sakanoi, S. S. Савченко, A. Sota, F. Tavecchio, Samaporn Tinyanont, A. A. Vasilyev, Z. R. Weaver, А. В. Жовтан, L. A. Antonelli, Matteo Bachetti, L. Baldini, W. H. Baumgartner, R. Bellazzini, S. Bianchi, Stephen D. Bongiorno, R. Bonino, A. Brez, N. Bucciantini, Fiamma Capitanio, Simone Castellano, S. Ciprini, E. Costa, Alessandra De Rosa, E. Del Monte, Alessandro Di Marco, Victor Doroshenko, Michal Dovčiak, Teruaki Enoto, Y. Evangelista, Sergio Fabiani, Riccardo Ferrazzoli, Javier A. García, Shuichi Gunji, Kiyoshi Hayashida, Jeremy Heyl, W. Iwakiri, V. Karas, Takao Kitaguchi, Jeffery J. Kolodziejczak, Fabio La Monaca, L. Latronico, S. Maldera, Alberto Manfreda, Andrea Marinucci, G. Matt, Ikuyuki Mitsuishi, Tsunefumi Mizuno, Fabio Muleri, Stephen C.-Y. Ng, C. Oppedisano, Alessandro Papitto, George G. Pavlov, M. Pesce-Rollins, M. Pilia, Andrea Possenti, Brian D. Ramsey, John Rankin, Ajay Ratheesh, C. Sgrò, Patrick Slane, P. Soffitta, G. Spandre, Toru Tamagawa, Roberto Taverna, Yuzuru Tawara, Allyn F. Tennant, Nicolas E. Thomas, Francesco Tombesi, A. Trois, Sergey S. Tsygankov, R. Turolla, Jacco Vink, Martin C. Weisskopf, Kinwah Wu, Fei Xie, Silvia Zane,
... detection of X-ray polarization from the blazar Markarian 501 (Mrk 501). We measure an X-ray ...
Tópico(s): Neutrino Physics Research
2022 - Nature Portfolio | Nature
... The State University of New Jersey, 2007; Vania Markarian, ‘Debating Tlatelolco: Thirty Years of Public Debates About ... London and New York, Zed Books, 2002; and Sergio Aguayo Quezada, La Charola: Una Historia de los ... Fundación Diego Lucero. See Cedillo's article. 18. Sergio Aguayo Quezada, 1968: Los Archivos de la violencia. ...
Tópico(s): Mexican Socioeconomic and Environmental Dynamics
2013 - Routledge | Journal of Iberian and Latin American Research