La mujer sin nombre, La Cenicienta china y Amo los dólares

Quinzenes Jornades de Foment de la Investigació de la FCHS (Any 2009-2010

Repercusiones laborales de la estrategia neoliberal en la industria Poblana del vestido

La subcontratación y la inestabilidad laboral son dos fenómenos sociales íntimamente ligados desde los orígenes del sistema capitalista mundial. Ambos se incrementaron, tanto en los países centrales como en los periféricos, a raíz de la crisis capitalista detonada por Richard Nixon en 1971 al devaluar el dólar. La restructuración de la industria manufacturera mundial provocada por la estrategia neoliberal ha tenido repercusiones estructurales ante todo en las industrias intensivas en mano de obra barata. La industria del vestido poblana es un caso evidente que demuestra la multiplicación de las maquiladoras y la creciente inestabilidad laboral durante la era neoliberal

Role of Electrospinning Parameters on Poly(Lactic-co-Glycolic Acid) and Poly(Caprolactone-co-Glycolic acid) Membranes

[EN] Poly(lactic-co-glycolic acid) (PLGA) and poly(caprolactone-co-glycolic acid) (PCLGA) solutions were electrospun into membranes with tailored fiber diameter of 1.8 mu m. This particular fiber diameter was tuned depending on the used co-polymer by adjusting the electrospinning parameters that mainly influence the fiber diameter. The greatest setting of the fiber diameter was achieved by varying the polymer solution parameters (polymer concentration, solvents and solvents ratio). PLGA was adequately electrospun with 1,1,1,3,3,3-hexafluoro-2-propanol (HFIP), whereas PCLGA required a polar solvent (such as chloroform) with a lower dielectric constant. Moreover, due to the amorphous morphology of PCLGA, pyridine as salt had to be added to the starting solution to increase its conductivity and make it electrospinnable. Indeed, the electrospinning of this co-polymer presents notable difficulties due to its amorphous structure. Interestingly, PCLGA, having a higher glycolic acid molar fraction than commonly electrospun co-polymers (caprolactone:glycolic acid ratio of 45:55 instead of 90:10), could be successfully electrospun, which has not been reported to date. To an accurate setting of fiber diameter, the voltage and the distance from needle to collector were varied. Finally, the study of the surface tension, conductivity and viscosity of the polymer solutions allowed to correlate these particular characteristics of the solutions with the electrospinning variables so that prior knowledge of them enables predicting the required processing conditions.M. Herrero acknowledges the Spanish Ministerio de Economia y Competitividad for the BES-2016-078024 grant. A.Valles acknowledges the support of the Generalitat Valenciana, Conselleria de Educacion, Investigacion, Cultura y Deporte through project AEST/2020/052. CIBER-BBN is an initiative funded by the VI National R&D & I Plan 2008-2011, Iniciativa Ingenio 2010, Consolider Program. CIBER actions are financed by the Instituto de Salud Carlos III with assistance from the European Regional Development Fund.Herrero-Herrero, M.; Gómez-Tejedor, J.; Vallés Lluch, A. (2021). Role of Electrospinning Parameters on Poly(Lactic-co-Glycolic Acid) and Poly(Caprolactone-co-Glycolic acid) Membranes. Polymers. 13(5):1-11. https://doi.org/10.3390/polym13050695S11113

Morphology of the larval stages of Macropodia czernjawskii (Brandt, 1880) (Decapoda, Brachyura, Inachidae) reared in the laboratory

The complete larval development of Macropodia czernjawskii (Brandt, 1880), is described and illustrated for the first time. Larvae were reared in the laboratory and development consisted of two zoeal stages and a megalopa. The main difference in the zoeal stages is the absence of lateral spines on the telson furcae, which allow it to be distinguished from the remaining species of Macropodia as well as from the zoeae of most majoids.This study was funded by the Spanish “Ministerio de Ciencia e Innovación, Plan Nacional I+D” and the European FEDER funds through project MEGALOPADN (CGL2009–11225).Peer reviewe

Estimation of slip rates and seismic hazard parameters using conventional techniques of structural geology in a slow-moving fault: Alhama de Murcia – Alcantarilla segment of the Alhama de Murcia Fault (Murcia, SE Spain)

The convergence between Nubian and Eurasian plates in the Western Mediterranean is being accommodated by the Eastern Betic Shear Zone, located in Southeastern Iberia. This is a low strain region whose faults show low slip rates and long recurrence periods of their maximum earthquakes, so they do not provide clear evidence of their seismogenic activity. The Alhama de Murcia - Alcantarilla segment, defined as the NE end of the Alhama de Murcia Fault, is one of the structures of the Eastern Betic Shear Zone and there are few in-depth studies about its seismic potential. In order to assess the seismogenic potential and slip-rate of this segment we have carried out a structural analysis. We have built a 3D geological model of the area where the fault is currently bounding the Neogene Fortuna basin. The structural model is based on seismic reflection profiles which have been later input in MOVE, structural modelling and analysis software. The analysis of the model has revealed several structural features related to positive inversion tectonics in Fortuna basin, specifically a typical "harpoon" structure whose deformation is estimated to have begun since Upper Miocene (Messinian). Geometric models and area balance methods (e.g. depth-to-detachment method) applied to the previously mentioned structure have allowed to estimate the heave of the fault, representing the amount of shortening observed in the fault section during its recent activity. The horizontal shortening rate estimated is between 0.09 and 0.26 mm/yr during the last 5.3 - 2.6 Ma. Projecting the obtained shortening onto the fault plane and considering the present regional tectonic shortening it has been possible to obtain a net slip rate between 0.13 and 0.37 mm/yr. Such parameters suggest that the Alhama de Murcia - Alcantarilla segment has less activity than other segments of the fault. The result obtained is consistent with the fact that the Carrascoy Fault, oriented parallel and located to the south of the Alhama de Murcia - Alcantarilla segment, seems to absorb part of the regional tectonic shortening. That is why the relief uplifted by the Alhama de Murcia - Alcantarilla segment during the Quaternary is significantly less prominent than the mountains fronts generated by the Carrascoy Fault. Even so, Alhama de Murcia - Alcantarilla segment should be considered as an active structure with implications for seismic hazard. The maximum size of earthquake is calculated to be Mw 6.3 - 6.6 according to magnitude-area and magnitude-length scaling relationships, with a mean recurrence interval lower than 10.000 years for the slip rate obtained. In the same way, Mw 5.0 earthquakes, such as those recorded in the historical seismic catalog, are estimated to have a recurrence interval lower than 50 years. These earthquakes could be very destructive in densely populated areas, as is the case of SE Spain, so they should be considered in seismic-hazard analysis