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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.
811

Assessing the Variability of Phytoplankton Assemblages in Old Woman Creek, Ohio

Bonini, Nick 08 August 2016 (has links)
No description available.
812

SOFT-TEMPLATING SYNTHESIS OF MESOPOROUS SILICA-BASED MATERIALS FOR ENVIRONMENTAL APPLICATIONS

Gunathilake, Chamila Asanka 19 April 2017 (has links)
No description available.
813

Ecology and Epidemiology of Human Pathogen Clostridium difficile in Foods, Food Animals and Wildlife

Rodriguez-Palacios, Alexander 20 October 2011 (has links)
No description available.
814

Exploring the feasibility of seawater flush toilets for rural, coastal areas

Conroy, Kristen M. 08 September 2022 (has links)
No description available.
815

An analysis of the implemenation of activity based costing at the Water Trading Entity

Bvumbi, Mulalo Naome 02 1900 (has links)
The Water Trading Entity (WTE) is a subdivision of the Department of Water and Sanitation responsible for water infrastructure and resource management. Despite ABC implementation at the WTE, the water resource management charge remains high, raising concern. This study aimed to establish what influence ABC implementation has on this charge. Through semi-structured interviews, the study found that the steps and factors generally associated with successful ABC implementation are partially followed, but undefined duplicated activities exist, due to insufficient training and limited technology. The study found that ABC implementation has minimal influence on the increase of the charge. When deciding on the charge, factors such as capping play a role, therefore limiting ABC use. Further research on ABC implementation in government departments can be conducted to ascertain how they can adhere to policies without compromising the use of ABC and identify the skills and training needs for an effective ABC implementation / Management Accounting / M.A. (Accounting Sciences)
816

The Response of Zooplankton Communities in Montane Lakes of Different Fish Stocking Histories to Atmospheric Nitrogen Deposition Simulations

Brittain, Jeffrey Thomas 21 May 2015 (has links)
Freshwater ecosystems are subject to a wide variety of stressors, which can have complex interactions and result in ecological surprises. Non-native fish introductions have drastically reduced the number of naturally fishless lakes and have resulted in cascading food web repercussions in aquatic and terrestrial habitats. Additional anthropogenic influences that result from increases in global airborne emissions also threaten wildlife habitat. Atmospheric nitrogen deposition has been recognized as an anthropogenic contributor to acidification and eutrophication of wilderness ecosystems. Planktonic communities have shown declines in response to predation and shifts in composition as a result of nutrient inputs and acidification, both of which are potential fates of nitrogen deposition. This study identified the response of zooplankton communities from two lakes (fish present vs. absent) in Mount Rainier National Park to manipulations simulating an episodic disturbance event in mesocosms. The experiment used a 2 x 2 factorial design with acid and nitrogen treatments. Treatments resulted in significantly elevated nitrogen and decreased pH conditions from control mesocosms over 42 days, indicating that the treatment effects were achieved. Results indicate that zooplankton communities from lakes with different food web structure respond differently to the singular effects of acid and nitrogen addition. Surprisingly, the interaction of the two stressors was related to increases in community metrics (e.g., abundance, biomass, body size, richness, and Shannon-Weiner diversity) for both lake types. This work can aid management decisions as agencies look to restore more aquatic montane habitats to their historic fishless states, and assess their abilities to recover and afford resistance to atmospheric pollution.

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