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These publications showcase the significant science conducted in our Science Centers.

Filter Total Items: 16759

PCR-based assays for the fish pathogen Aeromonas salmonicida: Further evaluation and validation of three PCR primer sets with infected fish PCR-based assays for the fish pathogen Aeromonas salmonicida: Further evaluation and validation of three PCR primer sets with infected fish

Two Aeromonas salmonicida-specific polymerase chain reaction (PCR) tests and 1 A. salmonicida subsp. salmonicida-specific PCR test were used to screen salmonid populations that were either overtly or covertly infected with A. salmonicida subsp. salmonicida. It was demonstrated that these PCR assays could be used to replace the biochemical testing currently employed to confirm the...
Authors
H.K. Byers, R. C. Cipriano, N. Gudkovs, J Crane . St

Ball clay Ball clay

Part of the 2000 annual review of the industrial minerals sector. A general overview of the ball clay industry is provided. In 2000, sales of ball clay reached record levels, with sanitary ware and tile applications accounting for the largest sales. Ball clay production, consumption, prices, foreign trade, and industry news are summarized. The outlook for the ball clay industry is also...
Authors
R.L. Virta

Industrial diamond Industrial diamond

An overview of the industrial diamond industry is provided. More than 90 percent of the industrial diamond consumed in the U.S. and the rest of the world is manufactured diamond. Ireland, Japan, Russia, and the U.S. produce 75 percent of the global industrial diamond output. In 2000, the U.S. was the largest market for industrial diamond. Industrial diamond applications, prices for...
Authors
D.W. Olson

Preface Preface

No abstract available.
Authors
D. H. Ellis

Factors affecting pesticide occurrence and transport in a large Midwestern river basin Factors affecting pesticide occurrence and transport in a large Midwestern river basin

Several factors affect the occurrence and transport of pesticides in surface waters of the 29,400 km2 White River Basin in Indiana. A relationship was found between pesticide use and the average annual concentration of that pesticide in the White River, although this relationship varies for different classes of pesticides. About one percent of the mass applied of each of the commonly...
Authors
Charles G. Crawford

Construction aggregates Construction aggregates

The estimated production during 2000 of construction aggregates, crushed stone, and construction sand and gravel increased by about 2.6% to 2.7 Gt (3 billion st), compared with 1999. The expansion that started in 1992 continued with record production levels for the ninth consecutive year. By commodity, construction sand and gravel production increased by 4.5% to 1.16 Gt (1.28 billion st)...
Authors
W.P. Bolen, V.V. Tepordei

Aquatic vegetation and trophic condition of Cape Cod (Massachusetts, USA) kettle ponds Aquatic vegetation and trophic condition of Cape Cod (Massachusetts, USA) kettle ponds

The species composition and relative abundance of aquatic macrophytes was evaluated in five Cape Cod, Massachusetts, freshwater kettle ponds, representing a range of trophic conditions from oligotrophic to eutrophic. At each pond, aquatic vegetation and environmental variables (slope, water depth, sediment bulk density, sediment grain size, sediment organic content and porewater...
Authors
C. T. Roman, N. E. Barrett, J. W. Portnoy

Seasonal habitat-use patterns of nekton in a tide-restricted and unrestricted New England salt marsh Seasonal habitat-use patterns of nekton in a tide-restricted and unrestricted New England salt marsh

Many New England salt marshes remain tide-restricted or are undergoing tidal restoration. Hydrologic manipulation of salt marshes affects marsh biogeochemistry and vegetation patterns, but responses by fishes and decapod crustaceans (nekton) remain unclear, This study examines nekton habitat-use patterns in the tide-restricted Hatches Harbor salt marsh (Provincetown, Massachusetts)...
Authors
K.B. Raposa, C. T. Roman

Hunting statistics: what data for what use? An account of an international workshop Hunting statistics: what data for what use? An account of an international workshop

Hunting interacts with the underlying dynamics of game species in several different ways and is, at the same time, a source of valuable information not easily obtained from populations that are not subjected to hunting. Specific questions, including the sustainability of hunting activities, can be addressed using hunting statistics. Such investigations will frequently require that...
Authors
J.D. Nichols, R.A. Lancia, J.D. Lebreton
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