Toxicity of Military Smokes and Obscurants

Toxicity of Military Smokes and Obscurants

Author: National Research Council

Publisher: National Academies Press

Published: 1999-09-24

Total Pages: 107

ISBN-13: 0309184290

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A variety of smokes and obscurants have been developed and used to screen armed forces from view, signal friendly forces, and mark positions. Smokes are produced by burning or vaporizing particular products. Obscurants are anthropogenic or naturally occurring particles suspended in the air. They block or weaken transmission of particular parts of the electromagnetic spectrum, such as visible and infrared radiation or microwaves. Fog, mist, and dust are examples of natural obscurants. White phosphorus and hexachloroethane smokes are examples of anthropogenic obscurants. The U.S. Army seeks to reduce the likelihood that exposure to smokes and obscurants during training would have adverse health effects on military personnel or civilians. To protect the health of exposed individuals, the Office of the Army Surgeon General requested that the National Research Council (NRC) independently review data on the toxicity of smokes and obscurants and recommend exposure guidance levels for military personnel in training and for the general public residing or working near military-training facilities.


Marine Insects

Marine Insects

Author: Lanna Cheng

Publisher: North-Holland

Published: 1976

Total Pages: 606

ISBN-13:

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This is the first exhaustive review of literature on marine insects, which are defined in this volume as those that spend at least part of their life in association with the marine environment. Not only are true insects, such as the Collembola and insect parasites of marine birds and mammals, considered, but also other kinds of intertidal air-breathing arthropods, notably spiders, scorpions, mites, centipedes and millipedes, which live and feed with, or even on, the insects of marine habitats. The chapters, written by leading authorities, are divided into two sections, the first treating primarily ecological aspects, the second dealing with major groups of insects in marine environments.


Biodiversity of Angola

Biodiversity of Angola

Author: Brian J. Huntley

Publisher: Springer

Published: 2019-02-20

Total Pages: 552

ISBN-13: 3030030830

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This open access multi-authored book presents a 'state of the science' synthesis of knowledge on the biodiversity of Angola, based on sources in peer-reviewed journals, in books and where appropriate, unpublished official reports. The book identifies Angola as one of the most biologically diverse countries in Africa, but notes that its fauna, flora, habitats and the processes that drive the dynamics of its ecosystems are still very poorly researched and documented. This 'state of the science' synthesis is for the use of all students of Angola's biodiversity, and for those responsible for the planning, development and sustainable management of the country's living resources. The volume brings together the results of expeditions and research undertaken in Angola since the late eighteenth century, with emphasis on work conducted in the four decades since Angola's independence in 1975. The individual chapters have been written by leaders in their fields, and reviewed by peers familiar with the region.


The Complete Guide to the Great Ocean Road

The Complete Guide to the Great Ocean Road

Author: Richard Everist

Publisher: BestShot

Published: 2009

Total Pages: 418

ISBN-13: 0975602349

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The Great Ocean Road region - the southwest coastline of Victoria - is simply extraordinary. This book unlocks the sights, activities and background context for visitors and locals - using maps, pictures and words. It is for everyone who is interested in exploring and learning about the region from Geelong to Portland. Sustainability depends first on knowledge, second on discerning customers and communities, and third on responsible businesses. This book features a number of businesses that are responding to the challenge, and: * details on hundreds of accessible sights * maps and information on over fify sustainable activities including beach and surf guides, walking track notes, national parks and reserves and over fifty cities, towns and villages with more than sixty heritage sites. * fascinating background context including environmental issues, Aboriginal and European heritage, geology, ecosystems, flora and fauna.


Timelines of Nearly Everything

Timelines of Nearly Everything

Author: Manjunath.R

Publisher: Manjunath.R

Published: 2021-07-03

Total Pages: 2658

ISBN-13:

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This book takes readers back and forth through time and makes the past accessible to all families, students and the general reader and is an unprecedented collection of a list of events in chronological order and a wealth of informative knowledge about the rise and fall of empires, major scientific breakthroughs, groundbreaking inventions, and monumental moments about everything that has ever happened.


Deep Time of the Media

Deep Time of the Media

Author: Siegfried Zielinski

Publisher: MIT Press

Published: 2008-02-15

Total Pages: 391

ISBN-13: 026274032X

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A quest to find something new by excavating the "deep time" of media's development—not by simply looking at new media's historic forerunners, but by connecting models, machines, technologies, and accidents that have until now remained separated. Deep Time of the Media takes us on an archaeological quest into the hidden layers of media development—dynamic moments of intense activity in media design and construction that have been largely ignored in the historical-media archaeological record. Siegfried Zielinski argues that the history of the media does not proceed predictably from primitive tools to complex machinery; in Deep Time of the Media, he illuminates turning points of media history—fractures in the predictable—that help us see the new in the old. Drawing on original source materials, Zielinski explores the technology of devices for hearing and seeing through two thousand years of cultural and technological history. He discovers the contributions of "dreamers and modelers" of media worlds, from the ancient Greek philosopher Empedocles and natural philosophers of the Renaissance and Baroque periods to Russian avant-gardists of the early twentieth century. "Media are spaces of action for constructed attempts to connect what is separated," Zielinski writes. He describes models and machines that make this connection: including a theater of mirrors in sixteenth-century Naples, an automaton for musical composition created by the seventeenth-century Jesuit Athanasius Kircher, and the eighteenth-century electrical tele-writing machine of Joseph Mazzolari, among others. Uncovering these moments in the media-archaeological record, Zielinski says, brings us into a new relationship with present-day moments; these discoveries in the "deep time" media history shed light on today's media landscape and may help us map our expedition to the media future.


How the Mind Works

How the Mind Works

Author: Steven Pinker

Publisher: W. W. Norton & Company

Published: 2009-06-02

Total Pages: 673

ISBN-13: 0393334775

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Explains what the mind is, how it evolved, and how it allows us to see, think, feel, laugh, interact, enjoy the arts, and ponder the mysteries of life.


500 Years of New Words

500 Years of New Words

Author: Bill Sherk

Publisher: Dundurn

Published: 2004-09

Total Pages: 315

ISBN-13: 1550025252

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If you ever use words and find yourself wondering where they came from, who wrote them first, and why they became necessary, then you will savour 500 Years of New Words, a new volume that takes you on an exciting journey through the English language from the days before Shakespeare to the first decade of the twenty-first century. The entries are arranged not alphabetically but in chronological order based on the earliest known year that each word was printed or written down.