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[Sunflower, 2016]

Description: Photograph of a sunflower which stands in front of a clear, white sky. Large leaves break off from the flower, somewhat obscuring it's center from view. [2016, Dallas, TX]
Date: 2016
Creator: Doherty, Richard, 1951-
Item Type: Refine your search to only Photograph
Partner: UNT Libraries Special Collections

[Nancy and Laura Yard, 2013]

Description: Photograph of Nancy and Laura posing beside each other in a backyard. One woman wears a white button up and black pants while the other wears a "Party USA" long-sleeved shirt and white pants. There is a tree to their left, a fence behind them, and a decorative windmill surrounded by sunflowers to their right. The photograph is contained within a circle which blacks out it's edges. [2013, Dallas, TX]
Date: 2013
Creator: Doherty, Richard, 1951-
Item Type: Refine your search to only Photograph
Partner: UNT Libraries Special Collections
open access

A Comparison of the First Two Sequenced Chloroplast Genomes in Asteraceae: Lettuce and Sunflower

Description: Asteraceae is the second largest family of plants, with over 20,000 species. For the past few decades, numerous phylogenetic studies have contributed to our understanding of the evolutionary relationships within this family, including comparisons of the fast evolving chloroplast gene, ndhF, rbcL, as well as non-coding DNA from the trnL intron plus the trnLtrnF intergenic spacer, matK, and, with lesser resolution, psbA-trnH. This culminated in a study by Panero and Funk in 2002 that used over 13… more
Date: January 20, 2006
Creator: Timme, Ruth E.; Kuehl, Jennifer V.; Boore, Jeffrey L. & Jansen, Robert K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Field Test Program for Evaluation of Sorbent Injection for Mercury Control, Quarterly Technical Report: October - December 2003

Description: The power industry in the U.S. is faced with meeting new regulations to reduce the emissions of mercury compounds from coal-fired plants. These regulations are directed at the existing fleet of nearly 1,100 boilers. These plants are relatively old with an average age of over 40 years. Although most of these units are capable of operating for many additional years, there is a desire to minimize large capital expenditures because of the reduced (and unknown) remaining life of the plant to amortiz… more
Date: February 12, 2004
Creator: Sjostrom, Sharon
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

COFIRING OF BIOMASS AT THE UNIVERSITY OF NORTH DAKOTA

Description: A project funded by the U.S. Department of Energy's National Energy Technology Laboratory was completed by the Energy & Environmental Research Center to explore the potential for cofiring biomass at the University of North Dakota (UND). The results demonstrate how 25% sunflower hulls can be cofired with subbituminous coal and provide a 20% return on investment or 5-year payback for the modifications required to enable firing biomass. Significant outcomes of the study are as follows. A complete … more
Date: January 1, 2002
Creator: Hutton, Phillip N.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

COFIRING OF BIOMASS AT THE UNIVERSITY OF NORTH DAKOTA

Description: Combustion testing of sunflower-coal blends on Boilers No. 3 and 5 at the University of North Dakota (UND) Steam Plant facility was completed. A total of four combustion tests were performed. In each boiler, a baseline combustion test was performed on subbituminous coal and a combustion test was performed on a sunflower-coal blend of approximately 25 wt% sunflower hulls. A cold-flow test was also performed on the boiler feed system. A summary review of the test results is included in this repor… more
Date: April 1, 2001
Creator: Hutton, Phillip N.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
captions transcript

[Flirting With Power: Texas beauty shots]

Description: Video footage from the Jo Streit Film Footage Collection consisting of original Betacam footage from filmmaker Jo Streit's documentary "Flirting with Power."
Date: August 2, 1999
Duration: 11 minutes 06 seconds
Creator: Streit, Jo
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections

[Lee Elementary Banister 1, 1999]

Description: Photograph showing the side of a staircase in Lee Elementary School. A wooden banister borders the staircase. There is a large construction-paper poster at the far end of the room. [1999, Dallas, TX]
Date: 1999
Creator: Doherty, Richard
Item Type: Refine your search to only Photograph
Partner: UNT Libraries Special Collections
open access

Effects of an Acute Dose of Gamma Radiation Exposure on Stem Diameter Growth, Carbon Gain, and Biomass Partitioning in Helianthus annuus

Description: Nineteen-day-old dwarf sunflower plants (Helianthus annuus, variety NK894) received a variable dose (0-40 Gy) from a cobalt-60 gamma source. A very sensitive stem monitoring device, developed at Battelle's Pacific Northwest Laboratories, Richland, Washington was used to measure real-time changes in stem diameter. Exposure of plants caused a significant reduction in stem growth and root biomass. Doses as low as 5 Gy resulted in a significant increase in leaf density, suggesting that nonreversibl… more
Date: May 25, 1988
Creator: Thiede, M. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department

[Champion of the Grasslands: A Member of the Native Prairie Association of Texas]

Description: In this serene photograph, a member of the Native Prairie Association of Texas stands amidst a vast grassland field, embodying the dedication and passion for conserving these valuable ecosystems. Their commitment to preserving native prairies shines through, as they work towards safeguarding the natural beauty and ecological significance of these landscapes for generations to come.
Date: 1986
Item Type: Refine your search to only Photograph
Partner: UNT Libraries Special Collections

[Preserving the Prairie: Native Prairie Association of Texas Champions Conservation Efforts]

Description: In this photograph, two dedicated preservers proudly hold a banner of the Native Prairie Association of Texas, an organization committed to restoring and preserving native prairies and grasslands. Their efforts are a testament to the importance of conserving these precious ecosystems and protecting the rich biodiversity they sustain.
Date: 1986
Item Type: Refine your search to only Photograph
Partner: UNT Libraries Special Collections
open access

Search for a bridge to the energy future: Proceedings

Description: The alarming effects, concerns, and even the insights into long-range energy planning that grew out of the OPEC oil embargo of 1973 are fading from the view of a shortsighted public. The enthusiastic initiatives taken in many countries for the development of alternative energy sources have withered due to lack of economic and/or ideological incentive. The events since December 1985, when the members of OPEC decided to increase production in an effort to capture their share of market, have broug… more
Date: January 1, 1986
Creator: Saluja, S.S. (ed.)
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Root adaptations at stress levels of nitrate, phosphate, or both simultaneously

Description: Sunflowers in flowing hydroponic culture show reduced growth rates at nitrate levels below 10 ..mu..M nitrate or phosphate levels below 0.3 ..mu..F. At least for phosphate, this level is a very small fraction (0.003) of the K/sub m/ for the uptake systems. We have quantified four major adaptations that enable high growth rates under incipient stress: increased root:shoot ratio; increased uptake capacity (V/sub max/) per unit root mass; nocturnal uptake of nutrients; and (only partially adaptive… more
Date: August 1, 1984
Creator: Gutschick, V.P. & Kay, L.E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Detroit Lakes Energy Systems Study: Phase I extension. Final report, August 1, 1978-January 15, 1979. [Biomass for power plant]

Description: An assessment of the resource availability of biomass and the potential of utilization of renewable energy systems in Detroit Lakes, Minnesota is presented. The feasibility of retrofitting the existing power plant to house a biomass energy system is discussed. Survey and evaluation of current off-the-shelf farm implement equipment which can be adapted to the handling of selected biomass materials is presented. Density studies on sunflower stalks, grain straw, and forest residues are included. (… more
Date: January 31, 1979
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Nutrient content of certain crop residues and possible losses with removal. Appendices A-H

Description: The following are included: nutrient content of certain crop residues and possible losses with removal, biomass distribution and availability, biomass equipment survey and evaluation, condition of present municipal power plant, fluidized bed burners, heat balances, selection of best alternate solution for burning biomass, summary and conclusions of potential for oil sunflower production and processing in North Dakota, and a proposed amendment to a DOE grant. (MHR)
Date: December 1, 1978
Creator: Clambey, G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Effects of 4-Chloroglutaranilic Acid on Growth and Development of Sunflower Seedlings

Description: The potential growth-regulating compound 4-chloroglutaranilic acid (CGA) was tested in whole-plant bioassay systems which utilized sunflower seedlings (Helianthus annuus, L.). Test systems included the growth of plants in soil , solid inert (Vermiculite) substrate, and hydroponic (Seed-Pak) pouches.
Date: August 1972
Creator: Larsen, Stephen P. (Stephen Page), 1933-
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

[Close-up of a sunflower]

Description: Photograph of a close-up of a sunflower. The flower's petals and center are yellow while its other leaves are green. Another sunflower can be seen out of focus in the background.
Date: 197X
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Photograph
Partner: UNT Libraries Special Collections
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