Análisis de varianza del contenido en metales pesados de suelos presumiblemente contaminados por actividad industrial PDF Download
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Author: Julia Noriega Galán
Publisher:
ISBN:
Category :
Languages : es
Pages : 82
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Author: Julia Noriega Galán
Publisher:
ISBN:
Category :
Languages : es
Pages : 82
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Author: Francisco Bautista Zúñiga
Publisher: UADY
ISBN: 9789687556819
Category : Science
Languages : es
Pages : 116
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Author: Eduardo de Miguel
Publisher: IGME
ISBN: 9788478404391
Category :
Languages : es
Pages : 188
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Author:
Publisher:
ISBN:
Category :
Languages : es
Pages :
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Entre las actividades potencialmente contaminantes del suelo se encuentra la industria de obtención de cinc, que, a lo largo de la historia, ha generado cantidades importantes de residuos con elevados contenidos de metales pesados depositados en las inmediaciones de sus instalaciones hasta épocas recientes. Después de la promulgación del RD 9/2005, dicha contaminación y el riesgo que conlleva deberán ser evaluados en los diferentes emplazamientos. El objetivo de esta tesis es el estudio de la movilización natural y forzada de plomo, cadmio y arsénico bajo distintas condiciones medioambientales en residuos procedentes de la hidrometalurgia del cinc y en suelos industriales contaminados por los productos de alteración de dichos residuos, así como la relación que existe entre la movilización y las características químicas y mineralógicas de los mismos, ya que el conocimiento de estos materiales y de las condiciones de movilización de los metales estudiados puede ayudar al estudio metodológico de evaluación de la contaminación así como al análisis de riesgos que permita la toma de decisiones ante la posible recuperación de tales terrenos. ABSTRACT Among the industries that mar be considered potential contaminators of the soil is that dedicated to obtaining zinc, which, during its time, has generated substantial quantities ofheavy metal-containing wastes which, until recently, were simply dumped in the irnmediate environs. Following the Spanish law RD 9/2005, the resulting contamination and any associated risks have to be evaluated. The object ofthis thesis was to study the natural and forced mobilization oflead, cadmium and arsenic in a variety of environmental conditions in wastes resulting from the zinc hydrometallurgy indus1ry and in soils contaminated by fue alteration products of these wastes, together with fue relation between such mobilization and fue chemical and mineralogical characteristics of the same. Knowledge of these material s and of the metal mobilizati.
Author: Sukhada Mohandas
Publisher: Springer
ISBN: 9811015856
Category : Science
Languages : en
Pages : 345
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Book Description
Bananas and plantains are among the most important food and cash crops in the world. They are cultivated in more than 135 countries, across the tropics and subtropics, with an annual global production of ca. 130 million metric tonnes. Though bananas are one of the most important components of food security in many developing countries, banana production is threatened by both abiotic and biotic stresses. These include a wide range of diseases and pests, such as bunchy top virus, burrowing nematodes, black Sigatoka or black leaf streak, Fusarium wilt, etc. In recent years, considerable progress has been made and several biotechnological and genomic tools have been employed to help understand and unravel the mysterious banana genome. Molecular and genomic studies have helped to decipher the Musa genome and its evolution. Genetic linkage map and whole genome sequencing of both Musa acuminata and Musa balbisiana (progenitors of cultivated banana) have completely changed the way of thinking and the approach on banana crop improvement. Whole-genome sequencing has helped to improve the selection of quantitative traits such as yield, as well as the selection of optimal parents for developing required hybrids in breeding programs. Gene isolation and the analysis of mutants have helped in the characterization of genes of agronomic value and the associated regulatory sequences. With the advent of molecular markers and new statistical tools, it is now possible to measure the diversity, identify genes and useful alleles linked to important agronomic traits. Further these alleles can be incorporated into cultivars through marker assisted selection or through transgenic approach. Transgenic approaches are potential tools for direct transfer of these genes into popular cultivars, which are generally not amenable for conventional breeding techniques, in specific with crops such as bananas which are sterile, triploid and heterozygous thereby making it difficult to reconstruct the recurrent genotypes in banana. Transgenic techniques thus have helped overcome the difficulty of working with sterile, triploid banana crop. In the last five years, enormous amount of new information and techniques have been generated for banana. A comprehensive book entitled “Banana: Genomics and Transgenic Approaches for Genetic improvement” on banana genomics, latest transgenic technologies and tools available for improved crop development in banana will address all these requirements.
Author: M. Ivanovich
Publisher: Oxford University Press, USA
ISBN:
Category : Science
Languages : en
Pages : 956
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Book Description
The second edition of this book reflects the rapid growth in the field of uranium-series disequilibrium during the past decade. The new edition presents a comprehensive discussion of theory and analytical methodology, emphasizing applications to problems in the Earth, marine, and environmental sciences where the phenomenon of disruption in naturally occurring decay series has facilitated so much productive research. To this end, the editors have drawn upon the experience and expertise of leading practitioners in each specialized area. This book should thus serve both as a reference text and a practical manual for graduate students and researchers in geochemistry, isotope hydrology, environmental science, sedimentology, Earth science, and archaeology.
Author:
Publisher:
ISBN:
Category : Marine pollution
Languages : en
Pages : 176
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Author: Khalid Rehman Hakeem
Publisher: Springer Science & Business Media
ISBN: 1461470285
Category : Science
Languages : en
Pages : 504
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Book Description
The improvement of crop species has been a basic pursuit since cultivation began thousands of years ago. To feed an ever increasing world population will require a great increase in food production. Wheat, corn, rice, potato and few others are expected to lead as the most important crops in the world. Enormous efforts are made all over the world to document as well as use these resources. Everybody knows that the introgression of genes in wheat provided the foundation for the “Green Revolution”. Later also demonstrated the great impact that genetic resources have on production. Several factors are contributing to high plant performance under different environmental conditions, therefore an effective and complementary use of all available technological tools and resources is needed to meet the challenge.
Author: Johan Reinhard
Publisher: Cotsen Institute of Archaeology Press
ISBN: 1938770927
Category : History
Languages : en
Pages : 201
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Book Description
Machu Picchu, recently voted one of the New Wonders of the World, is one of the world's most famous archaeological sites, yet it remains a mystery. Even the most basic questions are still unanswered: What was its meaning and why was it built in such a difficult location? Renowned explorer Johan Reinhard attempts to answer such elusive questions from the perspectives of sacred landscape and archaeoastronomy. Using information gathered from historical, archaeological, and ethnographical sources, Reinhard demonstrates how the site is situated in the center of sacred mountains and associated with a sacred river, which is in turn symbolically linked with the sun's passage. Taken together, these features meant that Machu Picchu formed a cosmological, hydrological, and sacred geological center for a vast region.
Author: Hiram Bingham
Publisher: Weidenfeld & Nicolson
ISBN: 0297865331
Category : Biography & Autobiography
Languages : en
Pages : 299
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Book Description
First published in the 1950s, this is a classic account of the discovery in 1911 of the lost city of Machu Picchu. In 1911 Hiram Bingham, a pre-historian with a love of exotic destinations, set out to Peru in search of the legendary city of Vilcabamba, capital city of the last Inca ruler, Manco Inca. With a combination of doggedness and good fortune he stumbled on the perfectly preserved ruins of Machu Picchu perched on a cloud-capped ledge 2000 feet above the torrent of the Urubamba River. The buildings were of white granite, exquisitely carved blocks each higher than a man. Bingham had not, as it turned out, found Vilcabamba, but he had nevertheless made an astonishing and memorable discovery, which he describes in his bestselling book LOST CITY OF THE INCAS.
