Search results for "Umana"
showing 10 items of 657 documents
Moroccans and Ecuadorians in the Mediterranean litoral intensive agriculture
2002
Desde el final de los años 1990 hay cambios importantes en el panorama migratorio español. Entre éstos cabe destacar la llegada de nuevos colectivos y la generalización del fenómeno en regiones y en sectores económicos que hasta el momento no conocían la mano de obra extranjera. Entre los nuevos grupos sobresalen los ecuatorianos que ya son el segundo colectivo de extranjeros en España y que en ciertas zonas entran en competencia con los marroquíes. Esta situación se aprecia especialmente bien en las comarcas agrarias del litoral mediterráneo. Since the end of the 1990s, there have been significant changes in the Spanish migration scene. Among them it is important to highlight the arrival o…
Nebulization of pharmacological solutions with an innovative medical device based on microvaporization
2023
The currently available nebulization devices have a slow aerosol flow and produce vapor with large microdrops. Improved devices that achieve higher airflow and produce smaller microdrops are needed to improve the clinical care of patients. To address this critical need, we developed a novel system for the molecular vaporization of liquids. This device vaporizes an active pharma-cological substance dissolved in water, alcohol, or a mixture of water and alcohol using two energy sources at the same time: high-frequency ultrasound and thermal induction. Application of energy to a solution contained in the device's tank allows, within tens of seconds, for the vaporization of the solution itself,…
La nueva sociedad contra el viejo Estado
2004
Reseña de dos de los volúmenes del programa "Europa-Mundi", dirigido y coordinado por José Vidal-Beneyto: "La ventana global" (2002), y "Hacia una sociedad civil global" (2003). Además de estos dos volúmenes, se publicó un tercero: "Derechos humanos y diversidad cultural" (2006). Existe un cuarto volumen inédito: "Ciudadanía mundial y poder global".
Bienes públicos mundiales / Bienes comunes de la humanidad
2003
Ejemplar dedicado al XXV Aniversario de la Constitución Española
Introduzione
2009
Della Natura Umana
2009
Role of oxidative and nitrosative stress biomarkers in chronic heart failure
2009
In this review, we present recent insights on chronic heart failure (CHF) and the potential role of tumor necrosis factor (TNF)-alpha, interleukins, myeloperoxidase (MPO), and nitrosative stress in the progression of this disease process. Reactive oxygen species (ROS) are produced as a consequence of aerobic metabolism. Under physiologic conditions, their unfavourable effect in causing oxidative damage is counteracted by antioxidants. An imbalance in favour of oxidants leads to oxidative stress, and contributes to myocyte apoptosis, direct negative inotropic effects, and reduced bioavailability of nitric oxide (NO). Together, these effects lead to impaired vasodilatation of the coronary, pu…
Balance del año 2020 y nuevos propósitos de 2021 para abordar los objetivos propuestos en el Plan Estratégico 2020-2022 de la Revista Española de Nut…
2021
Assessment of Toxic Effects of Ochratoxin A in Human Embryonic Stem Cells
2019
Ochratoxin A (OTA) is a mycotoxin produced by different Aspergillus and Penicillium species, and it is considered a common contaminant in food and animal feed worldwide. On the other hand, human embryonic stem cells (hESCs) have been suggested as a valuable model for evaluating drug embryotoxicity. In this study, we have evaluated potentially toxic effects of OTA in hESCs. By using in vitro culture techniques, specific cellular markers, and molecular biology procedures, we found that OTA produces mild cytotoxic effects in hESCs by inhibiting cell attachment, survival, and proliferation in a dose-dependent manner. Thus, we suggest that hESCs provide a valuable human and cellular model for to…
The Human Biodiversity in the Middle of the Mediterranean. Study of native and settlers populations on the Sicilian context
2020
[IT] Negli ultimi 200.000 anni, la specie umana si è diffusa in tutta la Terra, adattando la sua morfologia e fisiologia a un'ampia gamma di habitat. Lo scheletro umano ha quindi registrato i principali effetti ambientali e di conseguenza i reperti scheletrici assumono grande importanza nell'indagine dei processi evolutivi. Oggi le moderne tecniche di indagini quantitative delle principali caratteristiche morfologiche consentono di metterle in relazione con la variabilità genetica. La posizione geografica della Sicilia, l'isolamento e la sua lunga e dinamica storia di colonizzazione (diversi e numerosi contributi culturali e biologici) hanno creato un contesto peculiare che consente uno stu…