Author: Stan T. Lebow
Publisher:
ISBN:
Category : Balsam fir
Languages : en
Pages : 8

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Author:
Publisher:
ISBN:
Category : Forest products
Languages : en
Pages : 26

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The value of some northeastern tree species could be increased if they could be adequately treated with preservatives and shown to be durable in outdoor exposures. This paper reports on research to evaluate the ground-contact durability of northeastern species treated with copper-based preservatives. Stakes (19 by 19 by 457 mm) cut from balsam fir, eastern hemlock, eastern spruce, white pine, or red maple were treated with one of four concentrations of chromated copper arsenate, copper citrate, alkaline copper quat, or copper azole and placed into the ground at a test site in southern Mississippi. Similarly treated Southern Pine stakes were included for comparison. For 5 years, the stakes were rated annually for decay and termite attack. Untreated stakes of all wood species failed rapidly, indicating that none of the species evaluated have significant natural durability. Occasional failures have occurred in treated stakes, typically at the lower preservative retentions. Treated Southern Pine and eastern hemlock stakes have experienced the fewest failures, with treated white pine stakes performing nearly as well. Treated eastern spruce and red maple stakes had the most failures, and treated balsam fir stakes also had substantial failures. The failures in eastern spruce and balsam fir stakes appear to be attributable to poor preservative penetration and retention within individual stakes. Failures in the red maple stakes may be attributable to the differences in hardwood anatomy and the distribution of preservative within the wood structure. Of the northeastern species evaluated, eastern hemlock and white pine appear to perform most similarly to Southern Pine when treated with the copper-based preservatives. However, further exposure time is needed to allow more definitive conclusions.

Author:
Publisher:
ISBN:
Category : Traffic signs and signals
Languages : en
Pages : 88

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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 80

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Author: Food and Agriculture Organization of the United Nations
Publisher: Food & Agriculture Org.
ISBN: 925131411X
Category : Technology & Engineering
Languages : en
Pages : 325

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Book Description
This illustrated volume identifies the challenges and opportunities facing food and agriculture in the context of the 2030 Agenda, presents solutions for a more sustainable world and shows how FAO has been working in recent years to support its Member Nations in achieving the Sustainable Development Goals.

Author: National Research Council
Publisher: National Academies Press
ISBN: 0309260329
Category : Science
Languages : en
Pages : 247

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Book Description
Biofuels made from algae are gaining attention as a domestic source of renewable fuel. However, with current technologies, scaling up production of algal biofuels to meet even 5 percent of U.S. transportation fuel needs could create unsustainable demands for energy, water, and nutrient resources. Continued research and development could yield innovations to address these challenges, but determining if algal biofuel is a viable fuel alternative will involve comparing the environmental, economic and social impacts of algal biofuel production and use to those associated with petroleum-based fuels and other fuel sources. Sustainable Development of Algal Biofuels was produced at the request of the U.S. Department of Energy.

Author:
Publisher:
ISBN:
Category : Wood poles
Languages : en
Pages : 618

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Author: Bernan
Publisher: Energy Information Administration
ISBN: 9780160809200
Category :
Languages : en
Pages : 0

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Book Description
Summarizes U.S. energy history 1949-2007 in tables and figures. Covers all major forms of energy (fossil fuels, nuclear, and renewable energy) and total energy by activity (e.g., production, consumption, trade, stocks, and prices). Also includes financial indicators related to energy; international energy; environmental indicators; and data unit conversions. Key long-term trends are graphically illustrated in special section called Energy Perspectives.

Author: Michael Mendez
Publisher: Yale University Press
ISBN: 0300249373
Category : Nature
Languages : en
Pages : 305

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Book Description
An urgent and timely story of the contentious politics of incorporating environmental justice into global climate change policy Although the science of climate change is clear, policy decisions about how to respond to its effects remain contentious. Even when such decisions claim to be guided by objective knowledge, they are made and implemented through political institutions and relationships—and all the competing interests and power struggles that this implies. Michael Méndez tells a timely story of people, place, and power in the context of climate change and inequality. He explores the perspectives and influence low†‘income people of color bring to their advocacy work on climate change. In California, activist groups have galvanized behind issues such as air pollution, poverty alleviation, and green jobs to advance equitable climate solutions at the local, state, and global levels. Arguing that environmental protection and improving public health are inextricably linked, Mendez contends that we must incorporate local knowledge, culture, and history into policymaking to fully address the global complexities of climate change and the real threats facing our local communities.

Author: James A. Kent
Publisher: Springer Science & Business Media
ISBN: 1461442591
Category : Science
Languages : en
Pages : 1560

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Book Description
Substantially revising and updating the classic reference in the field, this handbook offers a valuable overview and myriad details on current chemical processes, products, and practices. No other source offers as much data on the chemistry, engineering, economics, and infrastructure of the industry. The Handbook serves a spectrum of individuals, from those who are directly involved in the chemical industry to others in related industries and activities. It provides not only the underlying science and technology for important industry sectors, but also broad coverage of critical supporting topics. Industrial processes and products can be much enhanced through observing the tenets and applying the methodologies found in chapters on Green Engineering and Chemistry (specifically, biomass conversion), Practical Catalysis, and Environmental Measurements; as well as expanded treatment of Safety, chemistry plant security, and Emergency Preparedness. Understanding these factors allows them to be part of the total process and helps achieve optimum results in, for example, process development, review, and modification. Important topics in the energy field, namely nuclear, coal, natural gas, and petroleum, are covered in individual chapters. Other new chapters include energy conversion, energy storage, emerging nanoscience and technology. Updated sections include more material on biomass conversion, as well as three chapters covering biotechnology topics, namely, Industrial Biotechnology, Industrial Enzymes, and Industrial Production of Therapeutic Proteins.