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[Zach Hess, Greg Johnson, Sammey Mihos, Lance Avery Morgan, and Rob Giardinelli at the Aging Mind Foundation Gala]

Photograph of (l-r) Zach Hess, Greg Johnson, Sammey Mihos, Lance Avery Morgan, and Rob Giardinelli at the Aging Mind Foundation 2018 Gala in Dallas, Texas.
Date: March 21, 2018
Creator: unknown
Object Type: Photograph
System: The UNT Digital Library
Zero Discharge Water Management for Horizontal Shale Gas Well Development (open access)

Zero Discharge Water Management for Horizontal Shale Gas Well Development

Hydraulic fracturing technology (fracking), coupled with horizontal drilling, has facilitated exploitation of huge natural gas (gas) reserves in the Devonian-age Marcellus Shale Formation (Marcellus) of the Appalachian Basin. The most-efficient technique for stimulating Marcellus gas production involves hydraulic fracturing (injection of a water-based fluid and sand mixture) along a horizontal well bore to create a series of hydraulic fractures in the Marcellus. The hydraulic fractures free the shale-trapped gas, allowing it to flow to the well bore where it is conveyed to pipelines for transport and distribution. The hydraulic fracturing process has two significant effects on the local environment. First, water withdrawals from local sources compete with the water requirements of ecosystems, domestic and recreational users, and/or agricultural and industrial uses. Second, when the injection phase is over, 10 to 30% of the injected water returns to the surface. This water consists of flowback, which occurs between the completion of fracturing and gas production, and produced water, which occurs during gas production. Collectively referred to as returned frac water (RFW), it is highly saline with varying amounts of organic contamination. It can be disposed of, either by injection into an approved underground injection well, or treated to remove contaminants so …
Date: March 31, 2012
Creator: Ziemkiewicz, Paul; Hause, Jennifer; Lovett, Raymond; Johnson, David Locke Harry & Patchen, Doug
Object Type: Report
System: The UNT Digital Library
Zinc Transporter YiiP Escherichia coli (open access)

Zinc Transporter YiiP Escherichia coli

None
Date: March 26, 2010
Creator: Fu, D.
Object Type: Book
System: The UNT Digital Library
Zirconium Evaluations for ENDF/B-VII.2 for the Fast Region (open access)

Zirconium Evaluations for ENDF/B-VII.2 for the Fast Region

N/A
Date: March 4, 2013
Creator: Brown, D. A.; Arcilla, R.; Capote Noy, R.; Mughabghab, S.; Herman, M. W.; Trkov, A. et al.
Object Type: Article
System: The UNT Digital Library