Management of Sedimentation and Degradation Problems of the Nile River in Egypt

Reliability of Bridge Foundations in Unstable Alluvial Channels

Heavy Metals in the First-Flush of Highway Nonpoint Pollutants

Agricultural Chemical Contamination of Shallow, Large Diameter Wells in Illinois

Hydrodynamics and Chemical Transport in the Root Zone and Shallow Ground Water System: Modeling

Demolishing NAPLs
Dynamic Underground Stripping is a combination of in situ steam injection, electrical resistance heating, and fluid extraction for rapid removal...

Liquefaction and Dynamic Properties of Grouted Sand

Removing Metals From Soil
Metals-contaminated soils have been among the most intractable hazardous-waste remediation problems. Conventional mitigation methods of capping, stabilization and landfilling all have...

Rest in Peace
Engineers working on a subway connection project in the nation's capital successfully employed chemical grouting techniques--some never tried before--to protect a historically...

Computer-Assisted Coal Mining — An Overview
The U.S. Bureau of Mines was created to conduct research to improve the health, safety, and efficiency of the coal and metal mining industries. In 1986, the Bureau embarked on a new, major...

Automation Concepts for In-Situ Waste Containment
The isolation of chemical and radioactive contaminants from groundwater supplies is a topic of increasing concern and urgency. In-situ containment of hazardous wastes is preferable if...

Overview of Space Environmental Effects
The natural environment for low Earth orbit subjects satellites to various forms of damage, ranging from particulate impacts, ultraviolet light, atomic oxygen erosion and charged particle...

Propulsion Systems for Future Space Exploration
There are many types of propulsion that are being considered for future space travel needs. These include nuclear, solar sail, magnetoplasmadynamic (MPD) thrusters, and laser propulsion...

JSC-1: A New Lunar Soil Simulant
A new lunar soil simulant, JSC-1, has been developed and characterized under the auspices of the NASA Johnson Space Center. This simulant was produced in large quantities to satisfy the...

Mineral Liberation and Beneficiation of Lunar High-Ti Mare Basalt, 71055: Digital-Imaging Analyses
Knowledge of the abundance of various lunar minerals and the ability to effectively beneficiate thee minerals are important requirements for effective utilization of lunar resources. SEM/EMP...

Kinetic Interpretations of First Reactivity Experiments on Lunar Basalt Samples
For the first time, water/oxygen production from Apollo program lunar samples has been experimentally demonstrated. The experiments gave extremely encouraging results as all ilmenite was...

Feasibility of Treating Synthetic Greywater by Culturing Waldmann's Dark Green Lettuce in a Hydroponic System
The objective of the research was to treat synthetic greywater in a hydroponic system culturing Waldmanns dark green lettuce (Lactuca Stavia L Var. Crispa L). The process is designed as...

Fiber Optic Chemical Sensors on Mars
A fiber optic chemical sensing instrument is described that will measure the reactivity of the martian soil and atmosphere. The self-contained instrument monitors reflectivity changes...

An Inflatable Antenna for Space-Based Low-Frequency Radio Astronomy
Antennas for a low-frequency orbiting radio telescope must have minimal problems in deployment, a directional beam, and a wide-angle scanning capability. Inflatable antennas with deposited...

Safety Assessment of a Chemical Reactor Vessel
The potential explosion loadings on a chemical reactor vessel is described in this paper. The potential loads presented provide a basis for designing spherical storage vessels which will...

 

 

 

 

Return to search