El centenario de La Plata en la bibliografía

Un centenario de revista platense es el título de la contribución a su bibliografía realizada por la Prof. María del Carmen Manes de Della Motta. Es una lista de revistas platenses que consigna el título, el subtítulo, el número y fecha de iniciación, el nombre del director y algunos datos que ayudan a su caracterización o consulta: nombres de colaboradores en algunos casos o la existencia de índices en otrosDepartamento de Bibliotecologí

Orthotropic Piezoelectricity in 2D Nanocellulose

The control of electromechanical responses within bonding regions is essential to face frontier challenges in nanotechnologies, such as molecular electronics and biotechnology. Here, we present I\b{eta}-nanocellulose as a potentially new orthotropic 2D piezoelectric crystal. The predicted in-layer piezoelectricity is originated on a sui-generis hydrogen bonds pattern. Upon this fact and by using a combination of ab-initio and ad-hoc models, we introduce a description of electrical profiles along chemical bonds. Such developments lead to obtain a rationale for modelling the extended piezoelectric effect originated within bond scales. The order of magnitude estimated for the 2D I\b{eta}-nanocellulose piezoelectric response, ~pm V-1, ranks this material at the level of currently used piezoelectric energy generators and new artificial 2D designs. Such finding would be crucial for developing alternative materials to drive emerging nanotechnologies.Comment: 5 figures included. Supp. Mat. available on the online version: https://www.nature.com/articles/srep34616, Others on: http://www.nanowerk.com/nanotechnology-news/newsid=44806.ph

Unveiled electric profiles within hydrogen bonds suggest DNA base pairs with similar bond strengths

Electrical forces are the background of all the interactions occurring in biochemical systems. From here and by using a combination of ab-initio and ad-hoc models, we introduce the first description of electric field profiles with intrabond resolution to support a characterization of single bond forces attending to its electrical origin. This fundamental issue has eluded a physical description so far. Our method is applied to describe hydrogen bonds (HB) in DNA base pairs. Numerical results reveal that base pairs in DNA could be equivalent considering HB strength contributions, which challenges previous interpretations of thermodynamic properties of DNA based on the assumption that Adenine/Thymine pairs are weaker than Guanine/Cytosine pairs due to the sole difference in the number of HB. Thus, our methodology provides solid foundations to support the development of extended models intended to go deeper into the molecular mechanisms of DNA functioning

Reseñas

Reseñas de las siguientes obras: Guía del lector; The role of national libraries: a reassesment por Maurice B. Une; Management by objectives por Ceorge S. Odióme; The moving finger "accesses" por Susan Spaeth Cherry; SCICON comes to San José por Richard E. Rendier; Library of Congress information bulletin, 1981; Zero-base budgeting and the management of library change por Lois Jennings.Departamento de Bibliotecologí

Reseñas

Reseñas de las siguientes obras: Guía del lector; The role of national libraries: a reassesment por Maurice B. Une; Management by objectives por Ceorge S. Odióme; The moving finger "accesses" por Susan Spaeth Cherry; SCICON comes to San José por Richard E. Rendier; Library of Congress information bulletin, 1981; Zero-base budgeting and the management of library change por Lois Jennings.Departamento de Bibliotecologí

Reseñas

Reseñas de las siguientes obras: Guía del lector; The role of national libraries: a reassesment por Maurice B. Une; Management by objectives por Ceorge S. Odióme; The moving finger "accesses" por Susan Spaeth Cherry; SCICON comes to San José por Richard E. Rendier; Library of Congress information bulletin, 1981; Zero-base budgeting and the management of library change por Lois Jennings.Departamento de Bibliotecologí

Reseñas

Reseña de los siguientes libros: Library administration's responsibilities outside the library: the consortium for public library innovation / Ernest R. DeProspo, Jr.; Catálogo de la Biblioteca Zonal no 1 / Universidad Nacional de Lomas de Zamora; Ergebnísse der ausgrabung in Isin: 4. Kampagne: winter 1975-76 / B. Hrouda; Isin: 4. Kampagne, 1973: die texte / C.B.F. Waiker; Elemente des Buch und Bibliothekswesens: 1. Deutsche Bibliotheksgeschíchte des Mittelalters / Ladislaus Buzas; El libro y el bibliotecario / por Domingo Buonocore; The microcomputer at Oakridge, Oregon / by Deborah Christian; Free online searches are feasible / by Paula J. Crawford and Judith A. Thompson; Rapport sur une visite des services de catalogage de cinq bibliothéques américaines / Monique Pelletier.Departamento de Bibliotecologí

Reseñas

Reseña de los siguientes libros: Library administration's responsibilities outside the library: the consortium for public library innovation / Ernest R. DeProspo, Jr.; Catálogo de la Biblioteca Zonal no 1 / Universidad Nacional de Lomas de Zamora; Ergebnísse der ausgrabung in Isin: 4. Kampagne: winter 1975-76 / B. Hrouda; Isin: 4. Kampagne, 1973: die texte / C.B.F. Waiker; Elemente des Buch und Bibliothekswesens: 1. Deutsche Bibliotheksgeschíchte des Mittelalters / Ladislaus Buzas; El libro y el bibliotecario / por Domingo Buonocore; The microcomputer at Oakridge, Oregon / by Deborah Christian; Free online searches are feasible / by Paula J. Crawford and Judith A. Thompson; Rapport sur une visite des services de catalogage de cinq bibliothéques américaines / Monique Pelletier.Departamento de Bibliotecologí