Cat Logo De Tesis De La Regi N Central Ciencias Biom Dicas

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Allelopathy In Agroecosystems

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Author : Ravinder Kumar Kohli
language : en
Publisher: CRC Press
Release Date : 2001-08-17

Allelopathy In Agroecosystems written by Ravinder Kumar Kohli and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001-08-17 with Science categories.

Discover environmentally safe ways to control weeds and pests! Until now farmers have had to choose between using expensive herbicides and fertilizers, which pollute the water table, or watching crop yields drop. All too often, crop yields dropped anyway, despite intensive farming. Allelopathy in Agroecosystems offers fresh hope. It provides an in-depth understanding of allelopathy-the mysterious, complex biochemical interactions among plants and microbes. This little-understood phenomenon plays a large role in agriculture, for good or ill. It can lead to changes in nutrient dynamics, vegetation structure, and species diversity. This comprehensive treatise is the first compendium devoted to explaining and exploring these chemical interactions in agricultural crop systems. Allelopathy in Agroecosystems explains how these interactions can make soil “sick,” especially in intensively cropped areas. This leads to less growth and lower yield. On the other hand, it has great potential as an environmentally safe method of weed and pest management. The fascinating original research presented here will help you understand the complexities of this invisible yet potent force in agriculture. Allelopathy in Agroecosystems examines this interaction as it affects the most important concerns of farmers and agronomists, including: beneficial interactions between crops weed control using crop residues crop rotation natural herbicides genetic engineering soil rhizosphere bacteria improving pastures forest/crop interactions sustainable management of agroecosystems new directions for research International in scope, Allelopathy in Agroecosystems offers an abundance of scientific data on this revolutionary new concept. It offers incalculable potential for rescuing farmed-out land, increasing crop yields, and cutting back on expensive soil additives. Every agronomist, environmental scientist, policymaker, agricultural librarian, and advocate of sustainable farming needs this book.

A I D Research And Development Abstracts

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Author :
language : en
Publisher:
Release Date : 1984

A I D Research And Development Abstracts written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1984 with Economic development categories.

The Cutter Incident

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Author : Paul A. Offit
language : en
Publisher: Yale University Press
Release Date : 2007-09-18

The Cutter Incident written by Paul A. Offit and has been published by Yale University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-09-18 with History categories.

Vaccines have saved more lives than any other single medical advance. Yet today only four companies make vaccines, and there is a growing crisis in vaccine availability. Why has this happened? This remarkable book recounts for the first time a devastating episode in 1955 at Cutter Laboratories in Berkeley, California, thathas led many pharmaceutical companies to abandon vaccine manufacture. Drawing on interviews with public health officials, pharmaceutical company executives, attorneys, Cutter employees, and victims of the vaccine, as well as on previously unavailable archives, Dr. Paul Offit offers a full account of the Cutter disaster. He describes the nation's relief when the polio vaccine was developed by Jonas Salk in 1955, the production of the vaccine at industrial facilities such as the one operated by Cutter, and the tragedy that occurred when 200,000 people were inadvertently injected with live virulent polio virus: 70,000 became ill, 200 were permanently paralyzed, and 10 died. Dr. Offit also explores how, as a consequence of the tragedy, one jury's verdict set in motion events that eventually suppressed the production of vaccines already licensed and deterred the development of new vaccines that hold the promise of preventing other fatal diseases.

Nothing About Us Without Us

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Author : James I. Charlton
language : en
Publisher: Univ of California Press
Release Date : 1998-03-27

Nothing About Us Without Us written by James I. Charlton and has been published by Univ of California Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998-03-27 with Social Science categories.

James Charlton has produced a ringing indictment of disability oppression, which, he says, is rooted in degradation, dependency, and powerlessness and is experienced in some form by five hundred million persons throughout the world who have physical, sensory, cognitive, or developmental disabilities. Nothing About Us Without Us is the first book in the literature on disability to provide a theoretical overview of disability oppression that shows its similarities to, and differences from, racism, sexism, and colonialism. Charlton's analysis is illuminated by interviews he conducted over a ten-year period with disability rights activists throughout the Third World, Europe, and the United States. Charlton finds an antidote for dependency and powerlessness in the resistance to disability oppression that is emerging worldwide. His interviews contain striking stories of self-reliance and empowerment evoking the new consciousness of disability rights activists. As a latecomer among the world's liberation movements, the disability rights movement will gain visibility and momentum from Charlton's elucidation of its history and its political philosophy of self-determination, which is captured in the title of his book. Nothing About Us Without Us expresses the conviction of people with disabilities that they know what is best for them. Charlton's combination of personal involvement and theoretical awareness assures greater understanding of the disability rights movement.

The Middle Paran River

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Author : Martin H. Iriondo
language : en
Publisher: Springer Science & Business Media
Release Date : 2007-06-03

The Middle Paran River written by Martin H. Iriondo and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-06-03 with Science categories.

The Middle Paraná river is one of the largest in the world. Exceptionally rich in fauna and flora, it provides researchers with a glimpse into an ecosystem yet undisturbed by human civilization. This fascinating book covers all the key aspects of the Paraná’s fluvial limnology and ecology, arranged in discrete and easily navigable sections. First, the physical and chemical environment is explained, then the river’s plant life, followed by its invertebrate life, and finally the vertebrates that inhabit the river.

Birth In Four Cultures

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Author : Brigitte Jordan
language : en
Publisher:
Release Date : 1980

Birth In Four Cultures written by Brigitte Jordan and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1980 with Health & Fitness categories.

Gastrointestinal Emergencies

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Author : Tony C. K. Tham
language : en
Publisher: John Wiley & Sons
Release Date : 2009-01-26

Gastrointestinal Emergencies written by Tony C. K. Tham and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009-01-26 with Medical categories.

The definitive reference guide for the management ofgastrointestinal emergencies and endoscopic complications When you are caring for a patient with a gastrointestinalemergency – during a procedure or after emergencystabilization – you can count on this updated reference tosupply the specific how-to guidance you need. Written and edited by leading international experts in thefield, the second edition of Gastrointestinal Emergencies: now reflects the many diagnostic and therapeutic advances sincepublication of the first edition covers the full range of gastrointestinal emergenciesencountered in daily clinical practice gives evidence-based approaches to the presentation, diagnosis,investigation, and management of patients features the important contributions of new editor RoySoetikno, Associate Professor of Medicine at the VA Health CareSystem, Palo Alto, California All practitioners involved in gastrointestinal emergency carewill find clear and succinct advice in this concise reference.Every Emergency Department and every endoscopy unit should keep acopy close at hand for quick reference.

Economics And The Law

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Author : Nicholas Mercuro
language : en
Publisher: Princeton University Press
Release Date : 1997

Economics And The Law written by Nicholas Mercuro and has been published by Princeton University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with Business & Economics categories.

By providing readers with a noncritical description of the broad contours of each school of thought, Mercuro and Medema convey a strong sense of the important elements of each of these interrelated yet varied traditions.

The Behavioral Ecology Of Callimicos And Tamarins In Northwestern Bolivia

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Author : Leila M. Porter
language : en
Publisher: Routledge
Release Date : 2016-12-05

The Behavioral Ecology Of Callimicos And Tamarins In Northwestern Bolivia written by Leila M. Porter and has been published by Routledge this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-12-05 with Social Science categories.

The Behavioral Ecology of Callimicos and Tamarins in Northwestern Bolivia offers students a scholary and relevant study of these rainforest dwellers.

Qualitative Inquiry And The Politics Of Research

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Author : Norman K Denzin
language : en
Publisher: Left Coast Press
Release Date : 2015-05-31

Qualitative Inquiry And The Politics Of Research written by Norman K Denzin and has been published by Left Coast Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-05-31 with Education categories.

Cover -- Half Title -- Title Page -- Copyright Page -- Table of Contents -- Dedication -- Acknowledgments -- Introduction: Qualitative Inquiry and the Politics of Research -- 1. An Unfinished Dialogue about Problematizing Knowledge Production in the Peer Review Process -- 2. Critical Qualitative Research in Global Neoliberalism: Foucault, Inquiry, and Transformative Possibilities -- 3. Practices for the 'New' in the New Empiricisms, the New Materialisms, and Post Qualitative Inquiry -- 4. The Work of Thought and the Politics of Research: (Post)qualitative Research -- 5. Qualitative Data Analysis 2.0: Developments, Trends, Challenges -- 6. Critical Autoethnography as Intersectional Praxis: A Performative Pedagogical Interplay on Bleeding Borders of Identity -- 7. Writing Myself into Winesburg, Ohio -- 8. The Three Rs-Remembering, Revisiting, Reworking: How We Think, but Not in Schools -- 9. Teaching Reflexivity in Qualitative Research: Fostering a Research Life Style -- 10. Coda: The Death of Data -- Index -- About the Authors