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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
41

Theoretical determination of subcritical sequent depths for complete and incomplete hydraulic jumps in closed conduits of any shape /

Lowe, Nathan John, January 2008 (has links) (PDF)
Thesis (M.S.)--Brigham Young University. Dept. of Civil and Environmental Engineering, 2008. / Includes bibliographical references (p. 39-43).
42

Culvert inventory and effects on fish assemblages in a central Appalachian watershed

Poplar-Jeffers, Ira O. January 2005 (has links)
Thesis (M.S.)--West Virginia University, 2005. / Title from document title page. Document formatted into pages; contains xi, 153 p. : ill., maps. Includes abstract. Includes bibliographical references.
43

Increased roughness in reinforced concrete box culverts

Hill, Adam Samuel, January 2006 (has links) (PDF)
Thesis (M.S. in civil engineering)--Washington State University, August 2006. / Includes bibliographical references (p. 33-34).
44

Turbulence characteristics of flow in a full-scale spiral corrugated culvert fitted and sloped- and slotted-weir baffles

Morrison, Ryan Richard, January 2006 (has links) (PDF)
Thesis (M.S. in civil engineering)--Washington State University, December 2006. / Includes bibliographical references (p. 17-19).
45

An evaluation of culverts on low volume forest roads in the Oregon Coast Range /

Piehl, Bradley T. January 1986 (has links)
Thesis (M.S.)--Oregon State University, 1987. / Typescript (photocopy). Includes bibliographical references (leaves 56-57). Also available on the World Wide Web.
46

Use of Highway Culverts, Box Bridges, and Caves by Winter-Roosting Bats in Mississippi

Katzenmeyer, Jessica B 07 May 2016 (has links)
White-nose Syndrome (WNS) has caused declines in bat populations in many areas of North America. To understand bat use and fungus presence in caves and culverts in Mississippi, I recorded bat species and abundance in these sites, roosting site characteristics, and incidence of WNS in selected caves and culverts used by bats. Sixteen caves and 214 culverts were surveyed from November-March 2010-2015. Five bat species were detected, and tricolor bats (Perimyotis subflavus) and southeastern myotis (Myotis austroriparius) were most abundant. Over five years, 3,789 roosting bats were recorded in caves and 16,812 were detected in culverts. I found significant relationships between bat numbers in culverts and microclimate conditions, dimensions, and proximity to public lands (P < 0.03). This study can help biologists with prioritization of protection and monitoring of culvert and cave roost sites and provide a greater understanding WNS incidence in these sites.
47

Culverts as potential barriers to fish movement

Haughey, Joanne Lee. January 2007 (has links)
Thesis (M.E.S.)--University of Delaware, 2007. / Principal faculty advisor: Clifford Keil, Dept. of Entomology & Wildlife Ecology. Includes bibliographical references.
48

Forest road hydrology : the influence of forest roads on stream flow at stream crossings /

Toman, Elizabeth Myers. January 1900 (has links)
Thesis (M.S.)--Oregon State University, 2004. / Printout. Includes bibliographical references (leaves 74-78). Also available on the World Wide Web.
49

Assessment of exhaustion-threshold curves for fish volitionally swimming in culverts a thesis presented to the faculty of the Graduate School, Tennessee Technological University /

Harvey, James A., January 2009 (has links)
Thesis (M.S.)--Tennessee Technological University, 2009. / Title from title page screen (viewed on Aug. 19, 2009). Bibliography: leaves 37-41.
50

Investigating the Regional Variation in Rules and Best Management Practices for Forestry in New Zealand

Pendly, Melissa Lin January 2014 (has links)
Under the Resource Management Act 1991, the interpretation and implementation of environmental policy is primarily the responsibility of local government. The management of forestry operations may be influenced via two written means: statutory rules published in regional and district plans, and recommended best management practices (BMPs) published in guidelines. There are concerns that inconsistency between jurisdictions’ regulations have a negative impact on the forestry industry; both in terms of cost and achieving positive environmental outcomes. This research has investigated and quantified the variation in Permitted Activity rules and BMPs between the sixteen Regional Councils of New Zealand, with a focus on culvert installation and earthworks. This research quantified variation on both a national scale and between neighbouring councils. A peer review exercise was carried out to test the possible subjectivity of results, and found that an expert panel largely agreed with the results produced. It has been found that there is significant variation in these regional rules and BMPs. Variation in both the level of control, i.e., the number of rules and BMPs per council, and the nature of control, i.e., the proportion of rules or BMPs utilised, is considerable. Further, the rules and BMPs of one council are seldom the same as another. This variation is apparent on both a national scale and when considering only neighbouring pairs of councils. The findings on levels of variation between councils show that the variation is high, given that the parameters of this research excluded rules and BMPs which pertained to areas of special significance or value. As only ‘general’ rules and BMPs were examined, one would expect variation between councils to be low. The results, however, indicate that there is only limited agreement between Regional Councils. New Zealand’s resource management rules and policies regarding plantation forestry are currently under review. By highlighting the existing regional variation, this research may help to promote the need for a more consistent and effective approach to the regulation of forestry operations.

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