Author: Keith R. SheaPublisher:
ISBN:
Category : Dwarf mistletoes
Languages : en
Pages : 8
Book Description
Hemlock Dwarf Mistletoe
Author: Keith R. SheaPublisher:
ISBN:
Category : Dwarf mistletoes
Languages : en
Pages : 8
Book Description
Physical Consequences of Large Organic Debris in Pacific Northwest Streams
Author: Frederick John SwansonPublisher:
ISBN:
Category : Aquatic ecology
Languages : en
Pages : 20
Book Description
Climate Change and Indigenous Peoples in the United States
Author: Julie Koppel MaldonadoPublisher: Springer
ISBN: 3319052667
Category : Science
Languages : en
Pages : 178
Book Description
With a long history and deep connection to the Earth’s resources, indigenous peoples have an intimate understanding and ability to observe the impacts linked to climate change. Traditional ecological knowledge and tribal experience play a key role in developing future scientific solutions for adaptation to the impacts. The book explores climate-related issues for indigenous communities in the United States, including loss of traditional knowledge, forests and ecosystems, food security and traditional foods, as well as water, Arctic sea ice loss, permafrost thaw and relocation. The book also highlights how tribal communities and programs are responding to the changing environments. Fifty authors from tribal communities, academia, government agencies and NGOs contributed to the book. Previously published in Climatic Change, Volume 120, Issue 3, 2013.
Backpacker
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 140
Book Description
Backpacker brings the outdoors straight to the reader's doorstep, inspiring and enabling them to go more places and enjoy nature more often. The authority on active adventure, Backpacker is the world's first GPS-enabled magazine, and the only magazine whose editors personally test the hiking trails, camping gear, and survival tips they publish. Backpacker's Editors' Choice Awards, an industry honor recognizing design, feature and product innovation, has become the gold standard against which all other outdoor-industry awards are measured.
Backpacker
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 96
Book Description
Backpacker brings the outdoors straight to the reader's doorstep, inspiring and enabling them to go more places and enjoy nature more often. The authority on active adventure, Backpacker is the world's first GPS-enabled magazine, and the only magazine whose editors personally test the hiking trails, camping gear, and survival tips they publish. Backpacker's Editors' Choice Awards, an industry honor recognizing design, feature and product innovation, has become the gold standard against which all other outdoor-industry awards are measured.
Forest Giants of the Pacific Coast
Author: Robert Van PeltPublisher: Global Forest Press
ISBN:
Category : Nature
Languages : en
Pages : 228
Book Description
Timber Bridges
Author: Michael A. RitterPublisher:
ISBN: 9781410221919
Category : Technology & Engineering
Languages : en
Pages : 500
Book Description
Timber's strength, light weight, and energy-absorbing properties furnish features desirable for bridge construction. Timber is capable of supporting short-term overloads without adverse effects. Contrary to popular belief, large wood members provide good fire resistance qualities that meet or exceed those of other materials in severe fire exposures. From an economic standpoint, wood is competitive with other materials on a first-cost basis and shows advantages when life cycle costs are compared. Timber bridges can be constructed in virtually any weather conditions, without detriment to the material. Wood is not damaged by continuous freezing and thawing and resists harmful effects of de-icing agents, which cause deterioration in other bridge materials. Timber bridges do not require special equipment for installation and can normally be constructed without highly skilled labor. They also present a natural and aesthetically pleasing appearance, particularly in natural surroundings. The misconception that wood provides a short service life has plagued timber as a construction material. Although wood is susceptible to decay or insect attack under specific conditions, it is inherently a very durable material when protected from moisture. Many covered bridges built during the 19th century have lasted over 100 years because they were protected from direct exposure to the elements. In modem applications, it is seldom practical or economical to cover bridges; however, the use of wood preservatives has extended the life of wood used in exposed bridge applications. Using modem application techniques and preservative chemicals, wood can now be effectively protected from deterioration for periods of 50 years or longer. In addition, wood treated with preservatives requires little maintenance and no painting. Another misconception about wood as a bridge material is that its use is limited to minor structures of no appreciable size. This belief is probably based on the fact that trees for commercial timber are limited in size and are normally harvested before they reach maximum size. Although tree diameter limits the size of sawn lumber, the advent of glued-laminated timber (glulam) some 40 years ago provided designers with several compensating alternatives. Glulam, which is the most widely used modem timber bridge material, is manufactured by bonding sawn lumber laminations together with waterproof structural adhesives. Thus, glulam members are virtually unlimited in depth, width, and length and can be manufactured in a wide range of shapes. Glulam provides higher design strengths than sawn lumber and provides better utilization of the available timber resource by permitting the manufacture of large wood structural elements from smaller lumber sizes. Technological advances in laminating over the past four decades have further increased the suitability and performance of wood for modern highway bridge applications.
American Forest Trees
Author: Henry H. GibsonPublisher:
ISBN:
Category : Timber
Languages : en
Pages : 734
Book Description
Historic Highway Bridges of Oregon
Author: Dwight A. SmithPublisher:
ISBN: 9780875952055
Category : History
Languages : en
Pages : 323
Book Description
Handsome illustrations of more than two hundred bridges, including Columbia River Scenic Highway bridges, covered bridges, and magnificent coastal bridges.
A History of the Rectangular Survey System
Author: C. Albert WhitePublisher:
ISBN:
Category : Government publications
Languages : en
Pages : 794
Book Description