Se hace una reseña de los diferentes logros alcanzados, durante los últimos veinte años de investigaciones desarrolladas, en la localidad tipo de la faja paleoflorística de Paraca. La edad del afloramiento en La Mina es Viseana y produjo una biozona única. La evidencia de varios ambientes de deposición contienen al menos seis comunidades vegetales, incluyendo bosques monoespecíficos de Lycopsida en posición erguida, Sphenopsida y Pteridospermas y además de varios conjuntos de flora aloctónicos. La vegetación se extendió a lo largo de planicies costeras, meandros fluviales, canales tidales e islas barreras.

Activated carbon samples were prepared and characterized from two novel forestry precursors by one-step chemical activationwith ZnCl2. The adsorption capacities of the adsorbents were tested with methylene blue in monocomponent synthetic solutionand with heavy metals from polluted river water. The specific surface areas (SBET) of the produced activated carbons were 1278and 1404 m2/g. Further characterization was carried out by FTIR, RAMAN spectroscopy, XRD and FESEM analysis. The porestructure of both activated carbons was predominantly microporous with presence of mesopores. The maximum methylene blue(MB) adsorption capacities for both activated carbons were 250 mg/g and 357 mg/g. MB kinetic experiments were carried outand the influence of the initial MB concentration and the activated carbon dosage was evaluated. The samples reached removallevels close to 100% during the first 5 min of...

One of the most important problems in our society is the lack of clean energy sources to overcome the energetic crisis and global warming. For this reason, I enrolled “Master en Energías Renovables y Eficiencia Energética” at UNI. This master gave me a good training and knowledge to face real problems concerning renewable energies. I chose photovoltaic solar energy because my major interest in physics are solid state physics and material science, in this manner I could bring together my two passions for material science and green energy.

We thank the leadership of the Reserva National de Paracas, the Institute Nacional de Recursos Naturales, and the Ministerio de Ambiente for permissions and support during our research at the Paracas site. We acknowledge partial support for this research by CONCYTEC to V.A., the National Science Foundation (EAR-8916826), and the University of Pennsylvania Research Foundation to H.W.P., and CAPES (Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior, Process no. BEX 0461/03-2) and CNPq (Conselho Nacional de Pesquisa, Process no. PQ 309211/2013-1) to R.I. Also, we would like to thank the reviewers H.A. Carrizo and R. Rohn for their fruitful suggestions. R. Jones helped with the photography and D. Wang and B. Trenk assisted with the rendition of figures.

This work was supported by grants from the National Science Foundation (EAR-8916826) and the Research Foundation of the University of Pennsylvania to H.W.P., grants from the Consejo Nacional de Ciencia y Tecnologia (CONCYTEC) and the Alexander von Humboldt-Stiftung to V.A., and grants from the Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq-PQ305687/2010-7) to R.I. We acknowledge the interest and support by former and current Directors of the Paracas Reserva for our paleontological studies; permissions to work in the Reserva Nacional de Paracas by the Instituto Nacional de Recursos Naturales, INRENA; and former students of the Universidad Ricardo Palma for their assistance in the field. Grace Maloney, Dan Ke, and Joanna Karaman prepared the figures.

Palma for their assistancien the field; G. Christian Amstutz for help in early phaseso f the project; Winfried Remy for assistanceg etting literature; Sarah A. Riley for plant illustrations;P hillip M. Willson for drafting the sectiona nd locality maps; and Manoj Aggarwal for photographica ssistance. This research was supportedb y grants from the National ScienceF oundation( EAR-8916826a) nd the Research Foundation of the University of Pennsylvaniat o HWP, and a grant from the Consejo Nacional de Ciencia y Tecnologia (CONCYTEC) to VA.