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The David W. Fentress Family Letters, 1856-1969
No full textTranscript of a letter by an unidentified author to David Fentress regarding sharing federal newspapers and the banning of federal newspapers in some areas. The author passes on the news of the war including the destruction of the Federal merchantmen by the Confederate fleet. He passes along world news: Russia preparing to go to War with Europe and how that could negatively affect the Confederacy. There is also speculation on the future of the war
The David W. Fentress Family Letters, 1856-1969
No full textTranscript of a letter by an unidentified author to David Fentress regarding sharing federal newspapers and the banning of federal newspapers in some areas. The author passes on the news of the war including the destruction of the Federal merchantmen by the Confederate fleet. He passes along world news: Russia preparing to go to War with Europe and how that could negatively affect the Confederacy. There is also speculation on the future of the war
Recommended from our members
The David W. Fentress Family Letters, 1856-1969
No full textLetter by an unidentified author to David Fentress regarding sharing federal newspapers and the banning of federal newspapers in some areas. The author passes on the news of the war including the destruction of the Federal merchantmen by the Confederate fleet. He passes along world news: Russia preparing to go to War with Europe and how that could negatively affect the Confederacy. There is also speculation on the future of the war
The David W. Fentress Family Letters, 1856-1969
No full textLetter by an unidentified author to David Fentress regarding sharing federal newspapers and the banning of federal newspapers in some areas. The author passes on the news of the war including the destruction of the Federal merchantmen by the Confederate fleet. He passes along world news: Russia preparing to go to War with Europe and how that could negatively affect the Confederacy. There is also speculation on the future of the war
Social Designs: Tank Irrigation Technology and Agrarian Transformation in Karnataka, South India
No full textTank Irrigation of South India is largely considered “traditional”, “alternative”, or “appropriate” form of irrigation in the current academic and policy circles. Policy reforms have been underway in South India to rehabilitate tanks and hand them over to communities for management and maintenance. These efforts are guided by a premise that communities are better managers of natural resources. However, these efforts are not based on a careful inquiry about how internal power dynamics in the community results in inequitable distribution of the resource. Social Designs is based on a central argument that tank irrigation technology is shaped as a result of power relations in a particular historical, agrarian and social context. This technology as a matter of fact institutionalizes a particular pattern of resource utilization that favors only some users, and discriminates against some others. This book proposes that technological designs are socially shaped, and that through the means of technological designs society orders itself. By means of shaping and reproducing technology, a certain form of social organization or social arrangement is also reproduced. Extensive social anthropological research on tank irrigation technology and agrarian practices in Karnataka enriches this book. Shah has also drawn upon rich empirical material on the social and agrarian context of tank irrigation technology
Alternate operating methods for improving the performance of a continuous stirred tank reactor
No full textThe effect of the pumping direction of an axial flow impeller, the feeding rate and the number of feed inlets on the operation of a continuously-fed stirred tank has been studied using CFD. The flow patterns generated by the up-pumping and down-pumping impeller, under both ‘typical’ and ‘intensified’ operating conditions, are compared. The effect of various tank configurations on the performance of the vessel is assessed by analysing the flow and power numbers, as well as the concentration field of a non-reactive tracer. Furthermore, the inlet feed jets are reduced using traditional jet similarity analysis and are compared with that of a typical round jet. The results show that up-pumping impellers improve circulation in the upper part of the tank and reduce shortcircuiting of the feed stream with only a small increase in power consumption. Furthermore, by using multiple feed inlets to increase the total throughput capacity, the amplitude of torque fluctuations is decreased and impeller bypassing is also decreased. The ensemble of conclusions suggest that the throughput capacity and mixing quality of a CSTR can be improved, without problems of short-circuiting, by employing up-pumping impellers coupled with multiple surface feed points
PIV measurements in an aerated tank stirred by a down- and up-pumping axial flow impeller
No full textLiquid phase hydrodynamics in an aerated tank stirred by a down- and an up-pumping pitched blade turbine have been investigated using Particle Image Velocimetry. The effect of agitator configuration and the gas phase on the mean velocity fields and turbulent quantities in the vessel have been investigated. The global mean gas holdup has also been evaluated for the two pumping conditions. For the gas flow rate used, the presence of gas only slightly alters the liquid flow patterns produced by both the down- and up-pumping configurations and causes a general decrease in the mean liquid velocities. The turbulent kinetic energy in the impeller discharge region was not affected by the presence of gas, but in the bulk of the tank, aeration caused a decrease in this value. Global gas holdup was found to be ~36% greater for the up-pumping impeller and a large amount of gas was found to be entrained by the primary circulation loop
Trumpocracy : a conversation with David Frum
No full textJoin us for a Q&A with David Frum moderated by GRC Director Peter Klein. Frum is the author of TRUMPOCRACY: The Corruption of the American Republic. He is also a Senior Editor at The Atlantic. From 2014 through 2017, he served as chairman of the board of trustees of the leading UK center-right think tank, Policy Exchange. In 2001-2002, he served as speechwriter and special assistant to President George W. Bush; in 2007-2008, as senior adviser to the Rudy Giuliani presidential campaigns.Non UBCUnreviewedOthe
Investigation by laser doppler velocimetry of the effects of liquid flow rates and feed positions on the flow patterns induced in a stirred tank by an axial-flow impeller
No full textThe (ow patterns established in a continuously-fed stirred tank, equipped with a Mixel TT axial-(ow impeller, have been investigated bylaser Doppler velocimetry, for a high and a low value of mean residence time—mixing time ratio. The pseudo-two-dimensional axial–radial-velocityvector plots, as well as the spatial distributions of the tangential velocitycomponent and the velocitypro;les around the impeller, show that the interaction between the incoming liquid and the liquid entrained bythe agitator rotation cause the (ow pattern in the vessel to become stronglythree-dimensional, especiallyin the region between the plane, where the feeding tube lies, and the 180◦-downstream plane. The increase in the liquid (ow rate and the location of the feed entryboth aect. The overall process, in this mode of operation, depends upon the appropriate con;guration and choice of parameters: for conditions corresponding to high liquid (ow rates, the (ow patterns indicate the possibilityof short-circuiting, when the liquid is fed into the stream being drawn bythe agitator and when the outlet is located at the bottom of the vessel
Risk-Based Pricing and Risk-Reducing Effort: Does the Private Insurance Market Reduce Environmental Accidents?
No full textThis paper examines whether risk-based pricing promotes risk-reducing effort. Such mechanisms are common in private insurance markets, but are rarely incorporated in government assurance programs. We analyze accidental underground fuel tank leaks--a source of environmental damage to water supplies--over a fourteen-year period, using disaggregate (facility-level) data and policy variation in financing the cleanup of tank leaks over time. The data suggest that eliminating a state-level government assurance program and switching to private insurance markets to finance cleanups reduced the frequency of costly underground fuel tank leaks by more than 20 percent. This corresponds to more than 3,000 avoided fuel-tank release accidents over eight years in one state alone, a benefit in avoided cleanup costs and environmental harm exceeding $400 million. These benefits arise because private insurers mitigate moral hazard by providing financial incentives for tank owners to close or replace leak-prone tanks prior to costly accidents.
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