Classification of some nilpotent class of leibniz superalgebras

The aim of this work is to present the description of Leibniz superalgebras up to isomorphism with characteristic sequence (n|m − 1, 1) and nilindex n + m

Los medios de comunicación social y las drogas

Las investigaciones evidencian que el inadecuado tratamiento por los medios de comunicación de los temas relacionados con las drogas desemboca en problemas que más que prevenir dificultan la tarea educativa. En este artículo su autora presenta reflexiones críticas para resaltar la importancia y la gran responsabilidad de los medios de comunicación como poderosos instrumentos que influyen decisivamente en la conducta de las personas.The researches show that the inappropriate treatment the media gives to the topics related to drugs leads to problems that instead of preventing, complicate the educational task. In this article, the author shows critical reflections to highlight the importance and huge responsibility of the media as a powerful resource that has a decisive influence over the behavior of people

La criminología de América Latina y su obieto de estudio

La criminología de América Latina y su obieto de estudi

Las drogas, la mujer y la farmacia

Las drogas, la mujer y la farmaci

Drogas: ¿percepciones o realidad?

Drogas: ¿percepciones o realidad

I Seminari Internacional sobre Paisatge. Les estètiques del paisatge : Olot, 13-15 de novembre del 2003

Entre els dies 13 i 15 de novembre del 2003, al Casal Marià d'Olot, se celebrà el I Seminari Internacional sobre Paisatge. Un seminari eclèctic i transversal que portava com a títol «Les estètiques del paisatge». L'objectiu de l'encontre va ser donar a conèixer i posar en comú, des d'una perspectiva conceptual, els diferents àmbits des dels quals es treballa i s'analitza un terme tan assumit socialment com és el paisatge.Entre los días 13 y 15 de noviembre de 2003, en el Casal Marià d'Olot, se celebró el I Seminario Internacional sobre Paisaje. Un seminario ecléctico y transversal que llevaba como título «Las estéticas del paisaje». El objetivo del encuentro fue dar a conocer y poner en común, desde una perspectiva conceptual, los diferentes ámbitos desde los cuales se trabaja y se analiza un término tan asumido socialmente como es el paisaje.Le premier Séminaire International sur le Paysage a eu lieu au Casal Marià d'Olot (Catalogne) entre le 13 et le 15 novembre 2003. Il s'agît d'un séminaire éclectique et transversal intitulé «Les esthétiques du paysage». Le but de cette rencontre a été rendre public et mettre en commun les différentes approches avec lesquelles on est habitué à travailler et à analyser un terme si interiorisé par la société comme est celui du paysage. Le séminaire s'est déroulé tout en adoptant un point de vue conceptuel.Between the 13th and the 15th of November 2003, the First International Landscape Seminar was held in Casal Marià of Olot (Catalonia). The seminary was named «The Aesthetics of Landscape» and the target of this meeting was, from a conceptual approach, to learn and share the knowledge of the different fields of work common to lanscape

Dental Student Readiness to Treat Special Care Patients upon Graduation

Open Access via the Wiley Agreement We would like to thank all the participants who took part in the study.Peer reviewe

Shadows and photon rings of regular black holes and geonic horizonless compact objects

The optical appearance of a body compact enough to feature an unstable bound orbit, when surrounded by an accretion disk, is expected to be dominated by a luminous ring of radiation enclosing a central brightness depression typically known as the shadow. Despite observational limitations, the rough details of this picture have been now confirmed by the results of the EHT Collaboration on the imaging of the M87 and Milky Way supermassive central objects. However, the precise characterization of both features - ring and shadow - depends on the interaction between the background geometry and the accretion disk, thus being a fertile playground to test our theories on the nature of compact objects and the gravitational field itself in the strong-field regime. In this work we use both features in order to test a continuous family of solutions interpolating between regular black holes and horizonless compact objects, which arise within the Eddington-inspired Born-Infeld theory of gravity, a viable extension of Einstein's General Relativity (GR). To this end we consider seven distinctive classes of such configurations (five black holes and two traversable wormholes) and study their optical appearances under illumination by a geometrically and optically thin accretion disk, emitting monochromatically with three analytic intensity profiles previously suggested in the literature. We build such images and consider the sub-ring structure created by light rays crossing the disk more than once and existing on top of the main ring of radiation. We discuss in detail the modifications as compared to their GR counterparts, the Lyapunov exponents of unstable nearly-bound orbits, as well as the differences between black hole and traversable wormholes for the three intensity profiles.Comment: 25 pages, 53 individual figures; v2: many modifications and additions, changes to the styles of figures, new tables; version accepted for publication on Class. Quant. Grav special issue"CQG - Focus issue on Quantum Gravity Phenomenology in the Multi-Messenger Era: Challenges and Perspectives extension

Improved antitumor effect of paclitaxel administered in vivo as pH and glutathione-sensitive nanohydrogels.

Most antitumor drugs usually affect not only rapidly dividing cells, such as those in tumors, but also highly proliferative cells in normal tissues. This nonspecific drawback could be successfully solved by using nanocarriers as controlled drug delivery systems. In this work, pH and redox-responsive nanohydrogels (NG) based on N-isopropylacrilamide (NIPA), N-hydroxyethyl acrylamide (HEEA) 2-acrylamidoethyl carbamate (2AAECM) and N,N′-cystaminebisacrylamide (CBA) as crosslinker were evaluated as bioreducible paclitaxel (PTX) nanocarriers for improving the accumulation of the drug within the tumor tissue and avoiding its conventional side effects. A single dose of PTX solution, unloaded-NHA 80/15/5CBA NG and PTX-loaded NHA 80/15/5-CBA NG (30 mg/kg PTX equivalent) were subcutaneously injected in female athymic nude mice bearing HeLa human tumor xenografts. PTX-loaded nanohydrogels showed higher antitumor activity than free PTX, as tumor evolution and Ki67 detection demonstrated. Histological tumor images revealed a higher content of defective mitotic figures and apoptotic bodies in PTX- treated tumors than in control or unloaded NG treated tumor samples. Nanohydrogels injection did not change any biochemical blood parameters, which means no liver or kidney damage after NG injection. However, differences in antioxidant defenses in MPS systems (liver, kidney and spleen) were observed among treatments, which may indicate an oxidative stress response after PTX injection.pre-print2904 K