Vortex Suppression in Wet-Pit Pump Intakes
Two distinct examples to suppress both air-entraining and boundary-attached subsurface vortices in large vertical pump intakes are presented that were developed by means of hydraulic model...
Effect of Water on the Consolidation of Crushed Rock Salt
The consolidation behavior of crushed rock salt, as the backfill in the under-ground disposal of nuclear waste, will be important in controlling room closure rates and local permeability....
Lumped Parameter Model for the Dynamics of the Pulmonary Circulation
The pulmonary circulation is a low pressure system such that respiration has an important effect on pulmonary hemodynamics and has to be taken into account when predicting its behavior....
Environmental Aspects of Lunar Helium-3 Mining
Three potential detrimental effects of lunar 3He mining have been identified; visual changes, atmospheric contamination, and solid waste disposal....
Strength and Fracture of Glass in the Lunar Environment
Due to the lack of water on the moon, the effects of hydrolytic depolymerization - stress corrosion cracking - will be nonexistent in glasses produced and used on the moon. This would...
Extraction of Potable Water from Urine for Space Applications
A regenerative technology capable of managing water and wastewater on-board long-term manned space platforms is essential if the Bush Administration's Space Exploration Initiative (SEI)...
Space Station & Lunar/Mars Life Support Research
The first part of this paper will report on the tests now being conducted by the Environmental Control and Life Suport Systems (ECLSS) at Marshall Space Flight Center. The findings of...
Regenerative Life Support Technology Challenges for the Space Exploration Initiative
Regenerative life support systems have been identified as one of the critical enabling technologies for future human exploration of space. This discipline encompasses processes and subsystems...
A Systems Approach to Water Recycling Research
Because of the cost of Earth resupply, water recycling from wastewater is a critical enabling technology for long duration space missions. The need and the fact that water quality is not...
Plot-scale Field Experiment of Surface Hydrologic Processes with EOS Implications
Plot-scale hydrologic field studies were initiated at NASA Marshall Space Flight Center to a) investigate the spatial and temporal variability of surface and subsurface hydrologic processes,...
Rocket Fuel to Earth Orbits from Near-Earth Asteroids and Comets
The analysis describes an architecture to bring 10,000 tons units of rocket fuel ore, propellant and construction mass back to low Earth orbit from newly discovered near-Earth comets or...
In Situ Recovery of Water from Dormant Comet Cores & CI Carbonaceous Chondrites
Water and volatiles may be produced by drill holes into dormant comet cores or class CI or CM asteroids. This is modeled after in-situ mining as in the Frasch process sulfur mines of the...
Effective Airport Environs Planning in the 1990s
A properly coordinated environs planning effort provides a guide for development and redevelopment of the land and facilities surrounding the airport. Airport environs planning, coupled...
Minneapolis/St. Paul International (MSP) Part 150 Implementation Design Overview
In February 1991, Matropolitan Airports Commission (MAC) selected the consulting team of Aviation Planning Inc., Wyle LAboratories Inc. and the Center for Energy and the Urban Environment...
Traffic Impact Analysis Standardization?The Orange County, California Experience
Traffic Impact Analysis (TIA) procedures can vary significantly from one agency to another. In Orange County, many cities and the county have adopted their own specialized techniques and...
Uniform Traffic Impact Assessment Studies?A Case History of Riverside County, California
A publication was issued by the Transportation Department of Riverside County, California, in December of 1989 which required all traffic impact studies performed for new development to...
Urban Transportation Management?Jersey City, New Jersey
This paper will describe the multi-year process undertaken to implement physical roadway improvements and transportation management policies in a constrained urban environment. Specifically...
Colgate Palmolive Transportation Impact Case Study
The Colgate Palmolive Company owns eleven city blocks of land in the Exchange Place area of downtown Jersey City, New Jersey. Colgate Palmolive operated manufacturing facilities on their...
Corridor Planning and Traffic Assessment: Small Sites and Neighborhoods
Determining the appropriate use of a piece of property, or the uses for larger land areas in a portion of a city, requires consideration of many facts. A recently completaed project was...
The Application and Use of Impact Fees: Legal Issues
Local governments in the United States are empowered, in varying degrees to regulate land use and to provide adequate public facilities to serve new growth. To meet the substantial costs...
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