1,737,876 research outputs found
Letter, 1848 July 7, Thomas R. Dew to Benjamin F. Dew, King and Queen County, Virginia
No full textIncludes typed transcription of handwritten letter.July 7, 1848 letter from Thomas R. Dew to his brother, Benjamin Franklin Dew describing new professor, Charles Minnigerode and 4th of July speeches
Harvesting dew to supplement drinking water supply in arid coastal villages of Gujarat
Get PDFShortage of drinking water is chronic, sever and widespread in Kutch - a hot and very arid region. It is specially acute in coastal villages where surface sources dry up rapidly and groundwater is not potable. Many of these are listed as “no source” villages and are supplied water on tanker-trucks daily from long distances. The conventional efforts to conserve and augment water resources are all in place. But one potential resource - dew - had remained unnoticed. The possibility that it may also be a supplementary resource was first noticed in the summer of 2001 when it was observed that dew condensed frequently on a plastic- clad greenhouse in Kothara, a village 15 km from the coast. That led us first, to carry out systematic measurement, and then to develop practical ways to harvest dew for human use. Measurement at Kothara was followed by measurements at two other locations along the coast - Panandhro and Mithapur. Data showed that dew occurred over an eight-month season (October- May) spanning the entire dry part of the year. Quantity was more in summer months than in winter. Dew water was found potable and safe. In the next three years development of dew harvest systems was carried out, prototypes were made and tested. After successful field trial three models were launched. The key component of the systems is the condenser, made of thin plastic film which can harvest 15 – 20 mm of dew water in the season. Condenser cools itself by radiative exchange with sky, without the use of any external energy. Working installations have been made on large roofs and on open ground. While the devices are specifically engineered to condense dew, these routinely harvest rain as well. These are being promoted as “dewrain” harvest systems that deliver useful but varying amount of water through all the months of the year.
Letter, 1837 October 18, Thomas Dew, Williamsburg, Va. to William H. Harrison, Elkhill, Amelia, Va.
No full textLetter from Thomas Dew, Williamsburg, Virginia to William H. Harrison, principal of the Academy at the Wigwam in Amelia, Virginia, dated October 18, 1837, defending the institution of slavery in the United States. From Acc. 2013.026, Series 4, Office of the President. Thomas Roderick Dew, UA 2.05, Special Collections Research Center, Swem Library, College of William and Mary
Lindsay Dew and family
No full text"[VX117404] L/Cpl Lindsay Dew. 20th Aust. Fld. Coy.
>Lucy Thelma Dew.
Priscilla. T. Dew.
Lindsay Dew. Jnr.
Coral Dew."[VX117404] Lance Corporal Lindsay Dew. 20th Australian Field Company.
Lucy Thelma Dew.
Priscilla. T. Dew.
Lindsay Dew, Junior.
Coral Dew
Modeling and Simulation of Condensation on Plastic Condenser Cooling under Night Sky
Get PDFThe Kutch region of north-west India is hot and semiarid, chronically short of drinking water. Dew forms frequently in the areas near the coast, over a span of eight-month (October- May) coinciding with the entire dry part of the year. Dew water is potable and safe. Dew harvest systems - devices to condense and collect dew - have been developed which could be installed on building roofs (condenser-on-roof), open ground (condenser-on-ground) and on frames (condenser-on-frames). The key component is the condenser, made of thin plastic film insulated underneath, which cools at night by radiative exchange with cloud-free sky. Condensation occurs when the film cools to or below the dew point of the surrounding air and humidity level is high - upwards of 85%. Over the season of eight months, 15 – 20 mm of dew water can be harvested. In this region where rainfall is very erratic and in normal years only 300 mm, harvested dew water can be an appreciable supplement. It can also be a small but critical supply for plants in nurseries. Design principle of efficient dew condenser is discussed and dew water collection in some recently installed working systems reported.
M. Dew
No full text"[SX23931] Sgt. M. Dew 27th Aust. Inf. Bn (A.I.F.) "Winellie." & 49 1/2 Mile."[SX23931] Sergeant M. Dew. 27th Australian Infantry Battalion, (Australian Imperial Forces) "Winnellie." & 49 1/2 Mile
Thomas R. Dew Estate Documents, 1838-1858
No full textDocuments, 1838-1858, relating to Thomas Roderick Dew's estate such as his wills, inventories of personal property, court degrees, and accounts. Includes his wife, Lucy Dew's estate documents
Sensitivity analysis of leaf wetness duration within a potato canopy
No full textA description and analysis is given of a wetness duration experiment, carried out in a potato field in the centre of the Netherlands in September 2005. The observations are used to design and evaluate a within-canopy dew model which provides the leaf wetness distribution within the canopy caused by dew processes and by precipitation. This withincanopy dew model consists of three layers (bottom, centre, top) each with equal contribution to the leaf area index. The model results compared favourably with experimental evidence. The sensitivity of the dew and precipitation interception on the amount of free water and the duration of the leaf wetness was analysed by varying the leaf area index and some important weather variables. The findings suggest that the leaf area index affects the amount of free water, but is barely sensitive to leaf wetness duration. Wind speed has hardly any effect on the amount of free water collection as well as on leaf wetness duration. The net radiation, however, appears to be sensitive to the amount of collected free water as well as the leaf wetness duratio
Researcher Profile: An Interview with Dr. Jeff Dew
Get PDF<p><em>Jeff Dew earned a dual-title Ph.D. in Human Development and Family Studies and Demography from Pennsylvania State University. He then completed a two-year research post-doctoral position in Sociology at the University of Virginia. He has been an assistant professor in the department of Family, Consumer, and Human Development at Utah State University for three years.</em> <em>Dr. Dew sees himself as a family studies researcher who is interested in how financial issues are associated with relationship quality. </em></p>
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