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Filter Total Items: 13164

Particulate Matter Identification in Lung Tissue from Deployers, Positive, and Negative controls Using Scanning Electron Microscopy and Energy Dispersive Spectroscopy (2013-2016)

We developed and tested a new method for in situ characterization of the types and distribution of inorganic particles in biopsied lung tissue from three diverse human subject groups using field emission scanning electron microscopy with an energy dispersive analyzer. Backscattered electron and secondary electron images of particulate matter in lung tissue were acquired. Inorganic particulate matt

Chemical and isotopic analyses of Mount Shasta, California

The dataset consists of chemical analyses and some isotopic analyses of rock samples collected from Mount Shasta, California, and its immediate surroundings.

USGS StreamStats for Washington

StreamStats is a Web application that incorporates a Geographic Information System (GIS) to provide users with access to an assortment of analytical tools that are useful for a variety of water-resources planning and management purposes, and for engineering and design purposes.

Residence Times and Alluvial Architecture of a Sediment Superslug in Response to Unsteady-flow Conditions

This data release consists of four Excel files (one for each cross section) containing worksheets corresponding to each channel cross-section survey (~25-31) between 1996 and 2014. These worksheets contain the basic survey data (dates, instruments, reference elevations, foresights, distances from reference pins, and elevations). An additional worksheet contains the measured unit-volume (m^3/m) o

Rare Earth Element Occurrence Database of the Tien Shan Region, Central Asia

Central Asia, site of the historic Silk Road trade network, has long been a conduit for the movement of people, energy, and mineral resources between Europe and Asia. Once part of the former Soviet Union, this region was and continues to be an important producer of base and precious metals, rare metals (RM), including niobium, tantalum, and beryllium, and a past producer of rare earth elements (RE

GIS shapefiles for Kilauea's episode 61g lava flow, Pu`u `O`o eruption: May 2016 to May 2017

This dataset contains shapefiles and associated metadata for Kīlauea volcano's Puu Ōō episode 61g lava flow from May 24, 2016 through May 31, 2017. Episode 61g began with a breakout from the east flank of Puu Ōō on May 24, 2016. Lava reached the Pacific Ocean at Kamokuna on July 26, 2017, and began building a lava delta that extended seaward from the original coastline. This lava delta collapsed i

Occurrence of plague epizootics in colonies of black-tailed prairie dogs, Pawnee National Grassland, Colorado, 1982-2005

Data on the occurrence of plague epizootics in colonies of black-tailed prairie dogs, Pawnee National Grassland, Colorado 1982-2005. Data are derived from annual prairie dog surveys conducted by staff of the Pawnee National Grassland, U.S. Forest Service. The data includes information on the year of sampling, colony identification, UTM coordinates of colony centroids, weather (precipitation and te

Count of Sockeye Salmon (Oncorhynchus nerka), River Temperature, and River Height in the Pilgrim River, Nome, Alaska, 2003-2014

The dataset is the daily count of Sockeye Salmon (Oncorhynchus nerka) passing through a fish counting weir on the Pilgrim River from 2003 to 2014. Also, included in the data set is the daily temperature and river height measured at the weir (65.103071°, -164.824046°).The fish weir was operated during the summer (late June to mid-September) by the Norton Sound Economic Development Corporation.

Soil, geomorphology and pre-European settlement vegetation associations of Southwest Louisiana

Defining the pre-European range of vegetation communities can enhance our understanding of the role soil, hydrology, and climate had on climax plant communities within southwest Louisiana. Coastal prairie grasslands were in a perpetual state of succession due to two primary disturbances; grazing, primarily by bison and other ungulates, and fires ignited by lightning and Native Americans. Along its

Titanium-vanadium deposits hosted in mafic-ultramafic layered intrusions and massif anorthosite intrusions from around the world

This data release includes four .csv files and one Esri shapefile which contain data on titanium-vanadium deposits hosted in mafic-ultramafic layered intrusions and massif anorthosite intrusions from around the world. Some of the data was used to create a grade and tonnage model for titanium-vanadium deposits hosted in mafic-ultramafic layered intrusions. Only deposits with reported grade and tonn

Fluid Inclusion Noble Gas Data From Goldfield and Tonopah Epithermal Au-Ag Deposits

Twenty-five ore and gangue mineral separates from the Miocene-age Goldfield and Tonopah epithermal Au-Ag deposits in southwestern Nevada were analyzed to determine the helium, neon, and argon (He, Ne, and Ar) isotopic compositions contained in fluid inclusions. Four mineral separates from the Butte Main Stage vein deposit and two from the Bingham pyrite-enargite vein deposits were also analyzed. F

Oregon OCS Seafloor Mapping: Selected Lease Blocks Relevant to Renewable Energy

This data release about Oregon Offshore Wind Pilot Project includes multibeam echosounder bathmetry and backscatter intensity data, and observations of seafloor substrate from a towed bottom video camera. The Offshore Wind Pilot Project was proposed by Principle Power, Inc, in May 2013. The proposed lease request is approximately 15 nautical miles offshore Coos Bay, Oregon with an area of approxim