Skip to main content
U.S. flag

An official website of the United States government

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search Results

184937 results.

Alternate formats: RIS file of the first 3000 search results  |  Download all results as CSV | TSV | Excel  |  RSS feed based on this search  |  JSON version of this page of results

Page 3473, results 86801 - 86825

Show results on a map

Publication Extents

Not all publications have extents, not all extents are completely accurate
Anaerobic benzene oxidation in the Fe(III) reduction zone of petroleum-contaminated aquifers
Robert T. Anderson, Juliette N. Rooney-Varga, Catherine V. Gaw, Derek R. Lovley
1998, Environmental Science & Technology (32) 1222-1229
The potential for anaerobic benzene oxidation in the Fe(III)-reduction zone of petroleum-contaminated aquifers was evaluated. Sediments were incubated under strict anaerobic conditions without any amendments in order to simulate in situ conditions. [14C]Benzene was not oxidized to 14CO2 at most sites examined, which...
Anaerobic oxidation of [1,2-14C]dichloroethene under Mn(IV)-reducing conditions
Paul Bradley, James Landmeyer, Richard S. Dinicola
1998, Applied and Environmental Microbiology (64) 1560-1562
Anaerobic oxidation of [1,2-14C]dichloroethene to14CO2 under Mn(IV)-reducing conditions was demonstrated. The results indicate that oxidative degradation of partially chlorinated solvents like dichloroethene can be significant even under anoxic conditions and demonstrate the potential importance of Mn(IV) reduction for remediation of chlorinated groundwater contaminants....
The Whakamaru group ignimbrites, Taupo Volcanic Zone, New Zealand: Evidence for reverse tapping of a zoned silicic magmatic system
S. J. A. Brown, C. J. N. Wilson, J. W. Cole, J. Wooden
1998, Journal of Volcanology and Geothermal Research (84) 1-37
The Whakamaru group ignimbrites are widespread voluminous welded ignimbrites which crop out along the eastern and western margins of the Taupo Volcanic Zone (TVZ), New Zealand. The ignimbrites have a combined volume exceeding 1000 km3, and were erupted from a large caldera in the central TVZ around 340 ka, following...
Triton
William B. McKinnon, Randolph L. Kirk
Paul R. Weissman, editor(s)
1998, Book chapter, Encyclopedia of the Solar System
No abstract available....
Factors influencing cattail abundance in the northern Everglades
S. Newman, J. Schuette, James B. Grace, K. Rutchey, T. Fontaine, K.R. Reddy, M. Pietrucha
1998, Aquatic Botany (60) 265-280
Since the early 1900s, the Everglades have been influenced by anthropogenic actions including altered hydrology and increased nutrient loading. In the northern Everglades an apparent effect of these disturbances has been the development and proliferation of dense cattail (Typha spp. ) stands in areas previously dominated by sawgrass (Cladium jamaicense Crantz) and...
Evaluation of the toxicity and efficacy of hydrogen peroxide treatments on eggs of warm- and coolwater fishes
Jeffrey J. Rach, Mark P. Gaikowski, George E. Howe, Theresa M. Schreier
1998, Aquaculture (165) 11-25
The use of hydrogen peroxide in aquaculture is growing and there is a need to develop fundamental guidelines to effectively treat diseased fish. The safety (toxicity) of hydrogen peroxide treatments was determined on eggs of representative warm- and coolwater fish species. Eggs of northern pike (Esox lucius), walleye (Stizostedion vitreum),...
Enhanced dissolution of cinnabar (mercuric sulfide) by dissolved organic matter isolated from the Florida Everglades
Mahalingam Ravichandran, George R. Aiken, Michael M. Reddy, Joseph N. Ryan
1998, Environmental Science & Technology (32) 3305-3311
Organic matter isolated from the Florida Everglades caused a dramatic increase in mercury release (up to 35 μM total dissolved mercury) from cinnabar (HgS), a solid with limited solubility. Hydrophobic (a mixture of both humic and fulvic) acids dissolved more mercury than hydrophilic acids and other nonacid fractions of dissolved...
Comparing sea-ice sediment load with Beaufort Sea shelf deposits: Is entrainment selective?
Erk Reimnitz, Michael McCormick, J. Bischof, D. A. Darby
1998, Journal of Sedimentary Research (68) 777-787
Modern dispersal of sea-ice-rafted debris (IRD) is important for the Arctic Ocean sediment budget from sources to sinks. Sediment entrainment occurs mainly through the action of small ice crystals (frazil) attaching to sedimentary particles in shallow water, a mechanism that could be selective. The principal source for entrainment of IRD...
The Holocene sea-level highstand in the equatorial Pacific: Analysis of the insular paleosea-level database
E. E. Grossman, C. H. Fletcher, B. M. Richmond
1998, Coral Reefs (17) 309-327
A review of the literature provides 92 estimates of the middle to late Holocene sea-level highstand on Pacific Islands. These data generally support geophysical model calculations that predict a +1 to 3 m relative sea-level highstand on oceanic islands due to the Earth’s rheological response to the melting of the last...
Effects of landcover, water redistribution, and temperature on ecosystem processes in the South Plate Basin
Jill Baron, M.D. Hartman, Timothy G.F. Kittel, L.E. Band, D. S. Ojima, R.B. Lammers
1998, Ecological Applications (8) 1037-1051
Over one-third of the land area in the South Platte Basin of Colorado, Nebraska, and Wyoming, has been converted to croplands. Irrigated cropland now comprises 8% of the basin, while dry croplands make up 31%. We used the RHESSys model to compare the changes in plant productivity and vegetation-related hydrological...
Water-quality assessment of the lower Illinois River Basin: Environmental setting
Kelly L. Warner
1998, Water-Resources Investigations Report 97-4165
The lower Illinois River Basin (LIRB) encompasses 18,000 square miles of central and western Illinois. Historical and recent information from Federal, State, and local agencies describing the physiography, population, land use, soils, climate, geology, streamflow, habitat, ground water, water use, and aquatic biology is summarized to describe the environmental setting...