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Surgical oncology (Hardcover)
Rodolfo Bruhl Day, Maria Elena Martinez, Pablo Meyer, Juan Mangieri, Judith Bertran
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R2,100
Discovery Miles 21 000
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Ships in 9 - 15 working days
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Maria Elena Martinez's "Genealogical Fictions" is the first
in-depth study of the relationship between the Spanish concept of
"limpieza de sangre" (purity of blood) and colonial Mexico's
"sistema de castas," a hierarchical system of social classification
based primarily on ancestry. Specifically, it explains how this
notion surfaced amid socio-religious tensions in early modern
Spain, and was initially used against Jewish and Muslim converts to
Christianity. It was then transplanted to the Americas, adapted to
colonial conditions, and employed to create and reproduce identity
categories according to descent. Martinez also examines how the
state, church, Inquisition, and other institutions in colonial
Mexico used the notion of purity of blood over time, arguing that
the concept's enduring religious, genealogical, and gendered
meanings and the archival practices it promoted came to shape the
region's patriotic and racial ideologies.
Despite deepening poverty and environmental degradation throughout
rural Latin America, Mayan peasant farmers in Chiapas, Mexico, are
creating an environmental and economic success by growing organic
coffee. Organic Coffee: Sustainable Development by Mayan Farmers
provides a unique and vivid insight into how this coffee is grown,
harvested, processed, and marketed to consumers in the North. Maria
Elena Martinez-Torres explains how Mayan farmers have capitalized
on their ethnic networks to make a crucial difference in their
approach to agriculture. Taking us inside Chiapas, Mexico's poorest
state, scene of the 1994 Zapatista uprising, she examines the
anatomy of the on-going organic coffee boom and the efffects of the
free-trade movement. The energy behind this phenomenon arises from
very poor farmers forming cooperatives, revaluing their ethnic
identity, and adding value to their land through organic farming.
The result has been significant economic benefits for their
families and ecological benefits for the future sustainability of
agriculture in the region. Martinez-Torres explodes the myth that
organic farming is less productive than chemical-based agriculture,
and gives us reasons to be hopeful for indigenous peoples and
peasant farmers. Organic Coffee ultimately shows how sustainable
agriculture at the production end can make the coffee commodity
chain into a tool for bettering lives and ecologies in poor regions
of the world. ABOUT THE AUTHOR---Maria Elena Martinez-Torres is
from Mexico and is Global Alternatives Associate at the Center for
the Study of the Americas (CENSA) in Berkeley, California. She is
director of Desarrollo Alternativo, AC, a non-profit organization
in Mexicothat works towards alternative, sustainable development
practices.
La condicion electrica del cuerpo humano es hoy conocida y aceptada
en muchas de sus aplicaciones. Las senales electricas son
consideradas fundamentales para diagnostico de patologias
cardiacas, cerebrales y musculares, ademas del uso del
biomagnetismo en tecnicas como las imagenes de resonancia magnetica
y el uso de nanoparticulas magneticas como marcadores para
diagnostico y tratamiento en ingenieria de tejidos y administracion
de farmacos. En este manuscrito se presenta un poco de historia
sobre el nacimiento y renacimiento de la electricidad y el
magnetismo como una aplicacion en el area medica. Los fundamentos
teoricos que soportan el porque de la interaccion entre el
electromagnetismo y el tejido y su dificultad a la hora de predecir
dicha interaccion. Se presentan las caracteristicas electricas de
los tejidos reflejadas en sus propiedades y cambios ante diferentes
condiciones de frecuencia, temperatura, edad, patologias, etc. Y
finalmente se recopilan estudios de la aplicacion de electricidad y
magnetismo en el diagnostico y tratamiento del tejido oseo y la
piel, que no son aun completamente aceptados pero que evidencian y
motivan a investigar en el area del bioelectromagnetismo."
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