• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 241
  • 143
  • 18
  • 9
  • 6
  • 4
  • 4
  • 4
  • 2
  • 2
  • 1
  • 1
  • 1
  • 1
  • 1
  • Tagged with
  • 611
  • 611
  • 139
  • 119
  • 114
  • 97
  • 92
  • 78
  • 76
  • 75
  • 71
  • 62
  • 58
  • 54
  • 52
  • 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.
21

Suitability Layers for Mesonet Stations in Tennessee

Holmes, Tristan, Joyner, Andrew, Tollefson, Will 25 April 2023 (has links) (PDF)
Mesonet stations are environmental monitoring systems used to examine environmental features such as Precipitation, Temperature, Insolation, Soil Moisture, and Localized Hazards. network of Mesonet stations is an integral part of weather and climate monitoring and the data produced are essential for agriculture, planning, transportation, and other industries. Tennessee is one of the few states without a Mesonet; a bill currently before the state assembly includes funding for such a system. Therefore, this research describes development of a Mesonet suitability layer for Tennessee that can be used to guide placement of individual Mesonet stations across the state, taking into account spacing, terrain, land use, construction suitability, and other factors. Land cover, road centerline, roughness, elevation, flood zone, building footprint, and soil type data were obtained from USGS, FEMA, NLCD, and the Tennessee state database to create each layer. Using ArcGIS Pro, each data layer was converted to a raster and then masked to the state of Tennessee at 30-meter resolution to ensure proper alignment of data overlays. The combined overlay map will identify zones that meet suitability criteria, and it is expected that multiple areas in each county will meet the such that a complete Mesonet network can be sited across the state. This study provides important information needed for final placement of Tennessee’s future Mesonet stations, which will provide essential weather and environmental monitoring data important for Tennessee.
22

Characterisation of nanocrystalline tin oxide sensor materials

Davis, Steven January 1997 (has links)
No description available.
23

Evaluation of the AERMOD model and examination of required length of meteorological data for computing concentrations in urban areas /

Masuraha, Anand. January 2006 (has links)
Thesis (M.S.C.E.)--University of Toledo, 2006. / Typescript. "A thesis [submitted] as partial fulfillment of the requirements of the Master of Science degree in Civil Engineering." Bibliography: leaves 104-108.
24

Environmental surveillance monitoring XYZ-La Crosse

Gono, Charles Saye. January 2001 (has links) (PDF)
Thesis--PlanB (M.S.)--University of Wisconsin--Stout, 2001. / Includes bibliographical references.
25

Examination of the performance of AERMOD model under different world conditions /

Danish, Farzana. January 2006 (has links)
Thesis (M.S.C.E.)--University of Toledo, 2006. / Typescript. "Submitted as partial fulfillment of the requirements for Masters of Science degree in Civil Engineering." Bibliography: leaves 53-55.
26

Comparison, evaluation, and use of AERMOD model for estimating ambient air concentrations of sulfur dioxide, nitrogen dioxide and particulate matter for Lucas County /

Jampana, Siva S. January 2004 (has links)
Thesis (M.S.V.)--University of Toledo, 2004. / Typescript. "A thesis [submitted] as partial fulfillment of the requirements of the Master of Science degree in Civil Engineering." Includes bibliographical references (leaves 87-91).
27

Optimizing hybrid wireless sensor network performance using mobile nodes /

Portnoy, Michael. January 2008 (has links)
Thesis (M.Sc.)--York University, 2008. Graduate Programme in Computer Science. / Typescript. Includes bibliographical references (leaves 147-152). Also available on the Internet. MODE OF ACCESS via web browser by entering the following URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pqdiss&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&rft_dat=xri:pqdiss:MR51580
28

Derivation of environmental quality guidelines based on tissue burden of toxic pollutants in the green lipped mussel Perna viridis /

Chu, King-hei, Vincent. January 2006 (has links)
Thesis (M. Sc.)--University of Hong Kong, 2006.
29

Active biomonitoring (ABM) of the Rietvlei Wetland System using antioxidant enzymes, non-enzymatic antioxidants and histopathology as biomarkers

Mlambo, Sibonani Sandra 14 October 2008 (has links)
M.Sc. / The main objective of this study was to perform active biomonitoring in the Rietlvlei Wetland System. Active biomonitoring, which can be defined as “the translocation of organisms from one place to another and quantifying their biochemical, physiological and/or organismal responses for the purpose of water quality monitoring” (De Kock and Kramer, 1994), has several advantages over the chemical monitoring system. Effluents often are complex and poorly characterized mixtures of a large number of chemicals. A combination of many chemicals being present in very small amounts (even below detection limits) can have a substantial impact on organisms, and a chemical-based approach may not identify the source of pollution nor will effect of synergism or antagonism be taken into account (Smolders et al., 2003). A suite of biomarkers of oxidative stress and histopathology were investigated in the fish Oreochromis mossambicus and the mollusk Melanoides tuberculata. The organisms were bred under laboratory conditions. They were deployed during the high-flow and low-flow periods, in cages at three sites down the flow gradient of the Rietvlei wetland system, to determine spatial and temporal variations in biomarker responses and general water chemistry in the system. The oxidative stress biomarkers analyzed were catalase (CAT), superoxide dismutase (SOD), peroxidase (GPx), as well as levels of reduced glutathione (GSH) and lipid peroxidation as malondialdehyde (MDA). There was evidence of presence of chemicals inducing oxidative stress in the organisms as indicated by the high levels of MDA, GSH and GPx. Induction of CAT and SOD was not substantial due to possible inhibitory factors. This study established that organism transplantation is a feasible strategy for biomonitoring. Overall, no distinct variations were observed in the spatial and temporal comparisons in all the biomarker responses. The findings of this investigation also provide a basis for further investigation into the application of these biomarkers in ecological risk assessment. / Dr. V. Wepener
30

Application of Protein-based Biosensors in Detection of Novel Therapeutics and Environmental Monitoring

Baretto, Jeevan 23 September 2014 (has links)
No description available.

Page generated in 0.0332 seconds