La continuidad de la empresa familiar, ¿es posible?

Las empresas familiares son de difícil manejo dado que están conformadas por sus fundadores, si todavía siguen con vida, y sus herederos, los cuales no siempre logran acuerdos. Esto se manifiesta en la organización de la empresa, en su desarrollo y en sus posibilidades de continuidad. Por este motivo se busca analizar los factores que inciden en dicha continuidad y la importancia de la profesionalización de la administración. Además se explica la forma en que se realizan las incorporaciones de los herederos.Fil: Gil, Alejandro. Universidad Nacional de Cuyo. Facultad de Ciencias Económicas. Delegación San Rafael.Fil: Falcone, Cristian. Universidad Nacional de Cuyo. Facultad de Ciencias Económicas. Delegación San Rafael.Fil: Runco, Leonardo. Universidad Nacional de Cuyo. Facultad de Ciencias Económicas. Delegación San Rafael.Fil: Bielli, Marco. Universidad Nacional de Cuyo. Facultad de Ciencias Económicas. Delegación San Rafael

Catanionic reverse micelles as an optimal microenvironment to alter the water electron donor capacity in a SN2 reaction

The effect of interfacial water entrapped in two types of catanionic reverse micelles (RMs) on the kinetic parameters of the SN2 reaction between dimethyl-4-nitrophenylsulfonium trifluoromethanesulfonate (S+) and n-butylamine (BuNH2) was explored. Two catanionic surfactants, composed of a mixture of oppositely charged ionic surfactants without their original counterions, were used to create the RMs. Thus, benzyl-n-hexadecyldimethylammonium 1,4-bis(2-ethylhexyl) sulfosuccinate (BHD-AOT) and cetyltrimethylammonium 1,4-bis(2-ethylhexyl) sulfosuccinate (CTA-AOT) were formed. Also, the well-known anionic surfactant sodium 1,4-bis(2-ethylhexyl) sulfosuccinate (Na-AOT) was employed as a comparison. Our results showed an important catalytic-like effect of all RMs investigated in comparison with a water-benzene mixture, and the rate constant values depend on the type of surfactant used. Faster reaction in BHD-AOT RMs than in CTA-AOT and Na-AOT RMs was observed. This behavior was attributed to the strong interaction (by hydrogen bonding with AOT anion and ion-dipole interaction with BHD+) between the entrapped water and the BHD-AOT interface, which reduces the solvation capacity of water on S+. In CTA-AOT (and Na-AOT) RMs, the water-interface interaction is weaker and the electron pairs of water can solvate S+ ions. In summary, the chemical structure of the counterion on the catanionic surfactant alters the interfacial region, allowing the progress of a reaction inside the RMs to be controlled. ©Fil: Villa, Cristian C.. Universidad del Quindio; ColombiaFil: Correa, Nestor Mariano. Universidad Nacional de Río Cuarto. Instituto para el Desarrollo Agroindustrial y de la Salud. - Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto para el Desarrollo Agroindustrial y de la Salud; ArgentinaFil: Silber, Juana J.. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química; ArgentinaFil: Falcone, Ruben Dario. Universidad Nacional de Río Cuarto. Instituto para el Desarrollo Agroindustrial y de la Salud. - Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto para el Desarrollo Agroindustrial y de la Salud; Argentina. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química; Argentin

How the cation 1-butyl-3-methylimidazolium impacts the interaction between the entrapped water and the reverse micelle interface created with an ionic liquid-like surfactant

The behavior of the interfacial water entrapped in reverse micelles (RMs) formed by the ionic liquid-like surfactant 1-butyl-3-methylimidazolium 1,4-bis-2-ethylhexylsulfosuccinate (bmim-AOT) dissolved in benzene (or chlorobenzene) was investigated using noninvasive techniques such as dynamic light scattering (DLS), static light scattering (SLS), FT-IR and 1H NMR. The DLS and SLS results reveal the formation of discrete spherical and non-interacting water droplets stabilized by the bmim-AOT surfactant. Moreover, since the droplet size increases as the W0 (W0 = [water]/[surfactant]) value increases, water interacts with the RM interface. From FT-IR and 1H NMR data, a weaker water-surfactant interaction in bmim-AOT RMs in comparison with the RMs created by sodium 1,4-bis-2-ethylhexylsulfosuccinate (Na-AOT) is detected. Consequently, there are less water molecules interacting with the interface in bmim-AOT RMs, and their hydrogen bond network is not completely disrupted as they are in Na-AOT RMs. The results show how the nature of the new cation impacts the interaction between the entrapped water and the RM interface, modifying the interfacial water structure in comparison with the results known for Na-AOT.Fil: Lépori, Cristian Marcelo Oscar. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; ArgentinaFil: Correa, Nestor Mariano. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; ArgentinaFil: Silber, Juana J.. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química; ArgentinaFil: Falcone, R. Darío. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química; Argentin

Biocompatible Solvents and Ionic Liquid-Based Surfactants as Sustainable Components to Formulate Environmentally Friendly Organized Systems

In this review, we deal with the formation and application of biocompatible water-in-oil microemulsions commonly known as reverse micelles (RMs). These RMs are extremely important to facilitate the dissolution of hydrophilic and hydrophobic compounds for biocompatibility in applications in drug delivery, food science, and nanomedicine. The combination of two wisely chosen types of compounds such as biocompatible non-polar solvents and ionic liquids (ILs) with amphiphilic character (surface-active ionic liquids, SAILs) can be used to generate organized systems that perfectly align with the Green Chemistry concepts. Thus, we describe the current state of SAILs (protic and aprotic) to prepare RMs using non-polar but safe solvents such as esters derived from fatty acids, among others. Moreover, the use of the biocompatible solvents as the external phase in RMs and microemulsions/nanoemulsions with the other commonly used biocompatible surfactants is detailed showing the diversity of preparations and important applications. As shown by multiple examples, the properties of the RMs can be modified by changes in the type of surfactant and/or external solvents but a key fact to note is that all these modifications generate novel systems with dissimilar properties. These interesting properties cannot be anticipated or extrapolated, and deep analysis is always required. Finally, the works presented provide valuable information about the use of biocompatible RMs, making them a green and promising alternative toward efficient and sustainable chemistryFinancial support was received from the Consejo Nacional de Investigaciones Científicas y Técnicas (PIP CONICET 112-2015-0100283), Universidad Nacional de Río Cuarto (PPI-UNRC 2016–2019, 2020–2022), Agencia Nacional de Promoción Científica y Técnica (PICT 2015-0585, PICT 2018-0508), and Ministerio de Ciencia y Tecnología, Gobierno de la Provincia de Córdoba (PID 2018) is gratefully acknowledged. R.D.F., N.M.C. and J.J.S. hold a research position at CONICET. N.D. and C.M.O.L. thank CONICET for a research fellowship. L.G.-R. thanks the Ministerio de Economia y Competitividad of Spain (project CTQ2017-84354-P), Xunta de Galicia (GR 2007/085; IN607C 2016/03 and Centro singular de investigación de Galicia accreditation 2016–2019, ED431G/09), and the European Regional Development Fund (ERDF) is gratefully acknowledgedS

Use of Ionic Liquids-like Surfactants for the Generation of Unilamellar Vesicles with Potential Applications in Biomedicine

The goal of this work is to understand the influence of the counterion nature on the organized systems formed by 1,4-bis-2-ethylhexylsulfosuccinate surfactants in aqueous solutions and how these aggregates will influence the deoxyribonucleic acid (DNA)-surfactant interactions. With this in mind, two ionic liquid-like surfactants were investigated: 1-butyl-3-methylimidazolium 1,4-bis-2-ethylhexylsulfosuccinate (bmim-AOT) and 1-hexyl-3-methylimidazolium 1,4-bis-2-ethylhexylsulfosuccinate (hmim-AOT). Measurements of dynamic light scattering, ζ-potential, transmission electron microscopy, and fluorescence and UV-visible spectroscopy were performed to study the characteristics of the vesicles formed by bmim-AOT and hmim-AOT. Regarding the determination of the interaction of the surfactants with DNA, circular dichroism was used. The results obtained showed that bmim-AOT and hmim-AOT ionic liquid-like surfactants spontaneously form unilamellar vesicles in water at very low surfactant concentrations. The characteristics of these aggregates are dependent on the length of the tail of the counterions. The length of the hydrophobic chains of the counterions also influences the DNA-surfactant interactions through hydrophobic effects.Fil: Lépori, Cristian Marcelo Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; ArgentinaFil: Correa, Nestor Mariano. Universidad Nacional de Río Cuarto. Instituto para el Desarrollo Agroindustrial y de la Salud. - Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto para el Desarrollo Agroindustrial y de la Salud; Argentina. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química; ArgentinaFil: Silber, Juana J.. Universidad Nacional de Río Cuarto. Instituto para el Desarrollo Agroindustrial y de la Salud. - Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto para el Desarrollo Agroindustrial y de la Salud; Argentina. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química; ArgentinaFil: Falcone, Ruben Dario. Universidad Nacional de Río Cuarto. Instituto para el Desarrollo Agroindustrial y de la Salud. - Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto para el Desarrollo Agroindustrial y de la Salud; Argentina. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química; ArgentinaFil: López López, Manuel. Universidad de Huelva; EspañaFil: Moyá, María Luisa. Universidad de Sevilla; Españ

The impact that catatonic surfactants have on the soft matter world

Catanionic surfactants are a class of amphiphile which result from the equimolar mixture of a cationic and an anionic surfactant, where the salt formed by the counterions is removed. In our group, for the first time, we have synthetized the unique catanionic surfactant: benzyl-n-hexadecyldimethylammonium 1,4-bis-2-ethylhexylsulfosuccinate (BHD-AOT), which has a tremendous impact in the soft matter field. This came out because it can form reverse micelles (RMs) or spontaneous large unilamellar vesicles, depending on the solvent used. RMs are supramolecular assemblies of surfactants formed in nonpolar solvents, in which the polar head groups of the surfactants point inward and the hydrocarbon chains point toward to the nonpolar medium. Vesicles are spherical aggregates formed by some amphiphilic compounds in water, in which the bilayer surrounds an aqueous void volume that can be ?loaded? with a wide variety of water-soluble marker molecules. In this review, we will show the synthesis, characterization, and properties of the different organized media created by BHD-AOT and, exciting applications since, as we proved, it is non-toxic and results especially interesting for drug delivery system.Fil: Villa, Cristian C.. Universidad Nacional de Río Cuarto; ArgentinaFil: Cobo Solis, Airam Katiza. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Stagnoli, Antonela Soledad. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Luna, Maria Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química; ArgentinaFil: Moyano, Fernando. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química; ArgentinaFil: Molina, Patricia Gabriela. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química; Argentina. Universidad Nacional de Río Cuarto. Instituto para el Desarrollo Agroindustrial y de la Salud. - Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto para el Desarrollo Agroindustrial y de la Salud; ArgentinaFil: Falcone, Ruben Dario. Universidad Nacional de Río Cuarto. Instituto para el Desarrollo Agroindustrial y de la Salud. - Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto para el Desarrollo Agroindustrial y de la Salud; ArgentinaFil: Correa, Nestor Mariano. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química; Argentin

Influence of the AOT counterion chemical structure in the generation of organized systems

The impact of the imidazolium counterion structure on the organized systems formed by the surfactant 1,4-bis-2-ethylhexylsulfosuccinate, AOT, both in aqueous solutions and in nonpolar solvents is investigated. With this in mind, we investigated if the ionic liquid-like (IL-like) surfactant 1-ethyl-3-methylimidazolium 1,4-bis-2-ethylhexylsulfosuccinate, emim-AOT, forms direct micelles or vesicles in water. Dynamic light scattering, zeta potential, conductivity, fluorescence spectroscopy, and UV-visible spectroscopy measurements were performed to characterize the organized systems in aqueous solutions. We also studied the self-aggregation of emim-AOT, 1-butyl-3-methylimidazolium 1,4-bis-2-ethylhexylsulfosuccinate, bmim-AOT, and of 1-hexyl-3-methylimidazolium 1,4-bis-2-ethylhexylsulfosuccinate, hmim-AOT, in nonpolar solvents. The results obtained showed that the IL-like surfactant emim-AOT forms direct micelles in water, as sodium 1,4-bis-2-ethylhexylsulfosuccinate (Na-AOT) does. However, emim-AOT aggregates are larger, have a lower surface charge, are more stable, and have a more polar and less fluid micellar interface than Na-AOT micelles. It was also observed that emim-AOT and hmim-AOT form reverse micelles in nonpolar solvents. The size of the imidazolium cations dramatically influences the size of the reverse micelles and their ability to solubilize water.Fil: Lépori, Cristian Marcelo Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; Argentina. Universidad Nacional de Córdoba; ArgentinaFil: Correa, Nestor Mariano. Universidad Nacional de Río Cuarto. Instituto para el Desarrollo Agroindustrial y de la Salud. - Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto para el Desarrollo Agroindustrial y de la Salud; ArgentinaFil: Silber, Juana J.. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química; ArgentinaFil: Falcone, Ruben Dario. Universidad Nacional de Río Cuarto. Instituto para el Desarrollo Agroindustrial y de la Salud. - Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto para el Desarrollo Agroindustrial y de la Salud; ArgentinaFil: López-López, Manuel. Universidad de Huelva; EspañaFil: Moyá, María Luisa. Universidad de Sevilla; Españ

Environmental performance of countries. Examining the effect of diverse institutional factors in a Metafrontier approach

This study employs an innovative metafrontier methodology, inspired by Huang et al. (2014), to investigate the combined impact of economic policy uncertainty, political orientation, and institutional quality on the environmental performance of 136 emergent and non-emerging countries from 1990 to 2018. Using such a parametric approach, the research evaluates countries’ efficiency both within specific geographical contexts and on an individual basis. The empirical findings reveal that North America and the Middle East & North Africa are more efficient at implementing environmental pollution-reduction technology. Furthermore, in a metafrontier scenario, economic policy uncertainty, institutional quality, and political orientation significantly affect regional environmental inefficiencies. Notably, economic policy uncertainty reduces environmental inefficiency in South Asia but improves it elsewhere, while better institutions are associated with reduced CO2 emissions and enhanced efficiency. Additionally, a left-leaning approach demonstrates a positive impact on reducing environmental inefficiencies in South Asia and Latin America & Caribbean. By shedding light on the intricate interplay between economic policies, environmental outcomes, and global disparities, this study advances our understanding and poses key research inquiries while offering potential policy implications

Unraveling the impact of economic policy uncertainty on environmental efficiency: How do institutional quality and political orientation matter?

Economic policy uncertainty significantly influences governmental decisions regarding environmental sustainability, particularly in CO2 emissions reduction efforts. This study examines the impact of economic policy uncertainty on environmental inefficiency across 136 emergent and non‐emerging countries from 1990 to 2018, using an unbalanced and heterogeneous sample. Additionally, we explore the moderating effects of institutional quality and political orientation on this relationship. Employing a directional distance function in a parametric context, our analysis reveals that economic policy uncertainty exacerbates environ- mental inefficiency. However, we find that institutional quality and political orientation act as important moderating factors, fostering greater environmental sustainability. Sensitivity analyses support these empirical findings, providing insights into potential implications for economic policy and guiding regulatory and policymaking efforts toward achieving enhanced environmental sustainability

Institutional quality and bioeconomy performance in European countries: Unveiling the evidence

The bioeconomy, emerging as a beacon of sustainable development and global competitiveness, relies on renewable biological resources. This study investigates the interplay between institutional quality and bio- economy performance in 28 European countries. By employing a Fixed Effect Regression and different sensitivity analyses, we unveil a robust, positive, and statistically significant relationship between the institutional quality and the socio-economic indicator for bioeconomy. The six institutional quality pillars - political stability, control of corruption, government effectiveness, regulatory quality, rule of law, and voice and accountability - positively impact the bioeconomy in Europe. These findings underscore the pivotal role of institutions in shaping bio- economy performance, emphasizing the profound impact of political stability, regulatory standards, and anti- corruption measures. As a result, our research provides valuable insights for policymakers, highlighting the significance of enhancing institutional quality as a means to advance sustainability and stimulate economic growth through bioeconomy development