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Classification and Behavior of Meander Migration
Meander migrations on the Mississippi River between Cairo, Illinois and Baton Rouge, Louisiana for the time period between the years 1765 and 1930 were classified into six categories based...

Building on Muck
The Craney Island Disposal Area at Norfolk, Va. is a 2,500 acre depository for material dredged from ports and channels in the Hampton Roads. The U.S. Army Corps of Engineers extended...

A Modified RBC Design: Performance Evaluation
An RBC (rotating biological contactor) system was designed using Pall rings type 40, and tested under high organic surface conditions. Influent soluble BOD averaged at 55 mg/l, equivalent...

Measurement of Activated Sludge Rheology
Rheological measurements provide fundamental information on the physical properties of activated sludge. Such properties influence the behavior of activated sludge in wastewater and sludge...

Probabilistic Analysis of Impact Loading Conditions
Probabilistic methods are developed for the analysis of random impact loading conditions that arise from oblique, noncollinear, and spinning missile impacts. Models are developed for the...

Toward Interactive Color-Shaded Rendering in CAD
A software package (CATSIG) is described which allows the user to interactively color shade geometric objects created on a sophisticated commercial CAD system (CATIA). The novel features...

Word Processing: Office Personnel's Friend or Foe?
The introduction of word processing centers into the workplace brought about the restructuring of office duties and new demands on workers. Word processing received blame for a variety...

Space Shuttle
In modifying the decade-old Apollo man-to-the-moon launch facilities at Cape Kennedy, FL, for the forthcoming Space Shuttle mission NASA and contractors made two major innovations: To...

New Telescope has Innovative Structural Design
The new optical telescope at Mt. Hopkins, Arizona, is the third largest in the world, but one of the most economical to build. The savings is the result of using 6 lightweight, small mirrors...

Largest Rotating Biological Contactor Plant Also First to Remove Nitrogen
Orlando, Florida is now constructing a new advanced waste treatment plant that removes both nitrogen and phosphorus to a high level. The plant is notable because it is the largest rotating...

The Modernization of a Small Hydro Plant
The Cornell Hydro in Northern Wisconsin was torn down, rebuilt, re-equipped and put into profitable operation. After extensive structural modifications to the old plant, three new 10,000...

 

 

 

 

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