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Origins of Circular Dichroism bands in Bowman--Birk soybean trypsin inhibitor

Description: The spectral properties of Bowman-Birk soybean trypsin inhibitor (BBI) were investigated by analyzing difference absorption spectra and difference circular dichroism (CD) spectra and by comparing them with those of tyrosyl model compounds. The O-acetylation of tyrosyl side chains showed that the ultraviolet CD bands of BBI above 225 nm originate from disulfide side chains and tyrosyl phenolic groups. A broad negative CD band centered around 280 nm in BBI arises mainly from disulfide bonds (epsi… more
Date: January 1, 1975
Creator: Kay, E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Response of Plant Carbohydrates to Elevated CO2: What Have We Learnt From Face Studies?

Description: Atmospheric CO{sub 2} concentration ([CO{sub 2}]) is expected to rise from a current level of 372 {micro}mol mol{sup -1} to about 550 {micro}mol mol{sup -1} by the middle of the century (Prentice 2001). Accumulation of foliar carbohydrates is one of the most pronounced and universal changes observed in the leaves of C{sub 3} plants grown at elevated [CO{sub 2}] (Drake et al 1997). Carbohydrates are the product of photosynthetic cells and the substrate for sink metabolism. However, carbohydrates… more
Date: August 29, 2004
Creator: Rogers, A.; Ainsworth, E. A.; Bernacchi, C. J.; Gibon, Y.; Stitt, M. & Long, S. P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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[Genetic engineering with a gene encoding a soybean storage protein to identify DNA sequences to control its expression]: Annual report, 1993

Description: The {beta}-conglycinins are soybean storage proteins encoded by genes that are tightly regulated both spatially and temporally. The author has studied the Soybean Embryo Factors that bind to the cis elements that are presumably involved in regulating the expression of these gene promoters using both in vitro binding assays and in vivo expression assays in transgenic plants. The results obtained to date have made it evident that there are no clear correlations between the in vivo and the in vitr… more
Date: December 31, 1993
Creator: Beachy, R. N.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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[Iron regulation of gene expression in the Bradyrhizobium japonicum/soybean symbiosis]. Progress report

Description: We wish to address the question of whether iron plays a regulatory role in the Bradyrhizobium japonicum/soybeam symbiosis. Iron may be an important regulatory signal in planta as the bacteria must acquire iron from their plant hosts and iron-containing proteins figure prominently in all nitrogen-fixing symbioses. For example, the bacterial partner is believed to synthesize the heme moiety of leghemoglobin, which may represent as much as 25--30% of the total soluble protein in an infected plant … more
Date: June 1, 1992
Creator: Guerinot, M. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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[Plant growth with limited water]. [Annual report, December 15, 1992--December 14, 1993]

Description: We used a soybean seedling system to explore the mechanism of growth limitation by water deficiency (low {Psi}{sub W}). Our prior work had show that (low {Psi}{sub W} inhibited plant growth initially because of a physical limitation to water uptake that appeared to result from a decrease in the {Psi}{sub W} gradient feeding water to the enlarging cells. The gradient was shown to originate from cell wall yielding and was altered primarily at the vascular tissue. In the present grant, we reported… more
Date: December 1, 1993
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Energy in synthetic fertilizers and pesticides: Revisited. Final project report

Description: Agricultural chemicals that are derived from fossil-fuels are the major energy intensive inputs in agriculture. Growing scarcity of the world`s fossil resources stimulated research and development of energy-efficient technology for manufacturing these chemicals in the last decade. The purpose of this study is to revisit the energy requirements of major plant nutrients and pesticides. The data from manufacturers energy survey conducted by The Fertilizer Institute are used to estimate energy requ… more
Date: January 1, 1994
Creator: Bhat, M. G.; English, B. C.; Turhollow, A. F. & Nyangito, H. O.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Evaluation of the potential for using old-field vegetation as an energy feedstock: Biomass yield, chemical composition, environmental concerns, and economics

Description: The major focus of current research on production of biomass for use as energy feedstock involves selection of species and genotypes best suited for specific regions of the United States and development of crop management techniques that maximize biomass productivity while minimizing environmental impacts and economic costs. The two experimental sites, and abandoned soybean field (AS) and an abandoned pasture (AP) were studied. At the AS site, the effects of two harvest frequencies (1 or 2 harv… more
Date: July 1, 1990
Creator: Johnston, J.W. Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Estimates of process energy use in four key food products industries

Description: Process energy profiles were developed for a representative plant in each of four selected food processing industries. These were: wet corn milling, hog slaughtering and processing, potato dehydration, and soybean crushing. Estimates of total energy consumption per pound of raw product input to each process were derived from in-plant studies. These energy coefficients were found to be: 4100 Btu/lb corn milled; 3200 Btu/lb live hog processed; 1500 Btu/lb raw potatoes granulated; and 800 Btu/lb s… more
Date: January 1, 1977
Creator: Divine, T. E.; Alzheimer, D. P. & Smith, W. F.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Strip mine reclamation: criteria and methods for measurement of revegetation success. Progress report, April 1, 1980-March 31, 1981

Description: During this contract period research was continued at finding suitable methods and criteria for determining the success of revegetation in Midwestern prime ag lands strip mined for coal. Particularly important to the experimental design was the concept of reference areas, which were nearby fields from which the performance standards for reclaimed areas were derived. Direct and remote sensing techniques for measuring plant ground cover, production, and species composition were tested. 15 mine si… more
Date: December 1, 1980
Creator: Carrel, J. E.; Kucera, C. L.; Johannsen, C. J. & Blanchar, R. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Levelized life-cycle costs for four residue-collection systems and four gas-production systems

Description: Technology characterizations and life-cycle costs were obtained for four residue-collection systems and four gas-production systems. All costs are in constant 1981 dollars. The residue-collection systems were cornstover collection, wheat-straw collection, soybean-residue collection, and wood chips from forest residue. The life-cycle costs ranged from $19/ton for cornstover collection to $56/ton for wood chips from forest residues. The gas-production systems were low-Btu gas from a farm-size gas… more
Date: January 1, 1983
Creator: Thayer, G. R.; Rood, P. L.; Williamson, K. D., Jr. & Rollett, H.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Radiological and Environmental Research Division. Annual report, January-December 1979

Description: Research programs conducted during 1979 are summarized. Areas of study included the collection of meteorological data and air samples from southern Lake Michigan, trace metal analyses of pollutants such as cadmium in the Great Lakes ecosystem, the environmental and biological effects of pollutants and thermal discharges on aquatic ecosystems, the effects of SO/sub 2/ on soybeans, and the behavior of transuranic elements in the environment. (ACR)
Date: January 1, 1979
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Air pollution effects on food quality. 2nd annual progress report

Description: Progress is reported in studies to determine the effect of acute, toxic exposures of ozone to alfalfa, potato, and soybean plants. The objective has been to correlate the foliar response with alterations in quality of the edible portion of the plant viz. the leaf, tuber and seed of alfalfa, potato and soybean, respectively. In 1977 we (1) modified our fumigation facilities, (2) developed protocol for studies with alfalfa and potato, and (3) conducted studies on flavonoid status of alfalfa and a… more
Date: February 1, 1979
Creator: Pell, E.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Effects of Sulfur Dioxide and Nitrogen Dioxide on Vegetation: Progress Report, 1 June 1977--28 February 1978

Description: The areas of research selected are related to fossil fuel combustion and are believed or are known to occur in the field: the mode of action of SO/sub 2/ in relation to its metabolic fate; the influence of NO/sub 2/ on the phytotoxicity of SO/sub 2/, and the combined effects of these pollutants on crop yield under field conditions; the effect of SO/sub 2/ on the plant with respect to its susceptibility to plant diseases; and the effect of SO/sub 2/ on the behavior and development of the Mexican… more
Date: February 1, 1978
Creator: Weinstein, L. H.; McCune, D. C. & MacLean, D. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Effects of Sulfur Dioxide and Nitrogen Dioxide on Vegetation: Progress Report, 1 June--30 September 1978

Description: Progress is reported on the following research projects: effects of NO/sub 2/ on the phytotoxicity of SO/sub 2/; interactions of air pollutants, plants, and plant pathogens; effects of SO/sub 2/ on plant-insect interactions; and mode of action and metabolism of SO/sub 2/ in plants. (HLW)
Date: January 1, 1979
Creator: Weinstein, L. H.; McCune, D. C. & MacLean, D. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Measuring the efficacy of a root biobarrier with x-ray computed tomography

Description: X-ray computed tomography is a useful tool for investigating soil physical properties nondestructively. There is a need to develop proper calibration relationships between soil properties and the x-ray absorption coefficient. The objective of the work was to evaluate soil factors affecting the x-ray absorption coefficient. Based on a theoretical analysis, experimental data from five soils and on results of several other investigators, it was concluded that for many applications, one calibration… more
Date: August 16, 1990
Creator: Tollner, E. W. & Murphy, C. E. Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Some preliminary notes concerning the impact of fossil fuel combustion on crop plants

Description: A project concerning SO/sub 2/ effects on midwestern crop species is being pursued. Three 80' x 100' field plots of soybeans were periodically fumigated by controlled release of SO/sub 2/ through a system of pipes suspended over the plant canopy. The fumigations were performed on 24 days between early July and late August for an average of 4.75 hours per day. The 1978 experiment was similar with 5 plots exposed to 18 fumigations averaging 4.1 hours per day. The mean SO/sub 2/ concentrations dur… more
Date: unknown
Creator: Miller, J.E. & Sprugel, D.G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Soil fertility and soil loss constraints on crop residue removal for energy production

Description: A summary of the methodologies used to estimate the soil fertility and soil loss constraints on crop residue removal for energy production is presented. Estimates of excess residue are developed for wheat in north-central Oklahoma and for corn and soybeans in central Iowa. These sample farming situations are analyzed in other research in the Analysis Division of the Solar Energy Research Institute.
Date: July 1, 1979
Creator: Flaim, S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Studies on the control of plant cell enlargement by cellular parameters

Description: The overall goal of this grant was to conduct research that would illuminate the mechanisms by which the plant hormone auxin induces plant cells to enlarge. A large body of knowledge already existed concerning this process. To begin with, it had been demonstrated, primarily by this laboratory during previous grant periods, that the effect of auxin is to cause a loosening of the cell wall, which is followed by turgor-driven wall expansion and water uptake. The wall contains a series of load-bear… more
Date: December 6, 1991
Creator: Cleland, R.E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Plant growth is influenced by glutamine synthetase-catalyzed nitrogen metabolism

Description: Ammonia assimilation has been implicated as participating in regulation of nitrogen fixation in free-living bacteria. In fact, these simple organisms utilize an integrated regulation of carbon and nitrogen metabolism; we except to observe an integration of nitrogen and carbon fixation in plants; how could these complex systems grow efficiently and compete in the ecosystem without coordinating these two crucial activities We have been investigating the role of ammonia assimilation regulating the… more
Date: June 11, 1991
Creator: Langston-Unkefer, P.J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Air pollution effects on food quality. Final progress report. CAES No. 555-80

Description: The impact of ozone on the qualitative characteristics of potatoes, alfalfa and soybeans is discussed. The impact on yield, total solids, sugar status and tuber glycoalkaloid (TGA) content was measured. The effects of ozone on the leaves were also noted. Field trials were conducted as well as laboratory experiments. (DC)
Date: January 1, 1980
Creator: Pell, E.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Agricultural sector impacts of making ethanol from grain

Description: This report presents the results of a model of the effects on the agricultural sector of producing ethanol from corn in the United States between 1979 and 1983. The model is aggregated at the national level, and results are given for all of the major food and feed crops, ethanol joint products, farm income, government payment, and agricultural exports. A stochastic simulation was performed to ascertain the impacts of yield and demand variations on aggregate performance figures. Results indicate… more
Date: March 1, 1980
Creator: Hertzmark, D.; Ray, D. & Parvin, G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Validation of the Cumberland Energyplex concept. Volumes 1 and 2. Executive summary and analysis detail. Final report

Description: The definition and goal of the Energyplex, available and required resources, Energyplex elements and their economics, Energyplex products and markets, environmental residuals, electricity in Illinois, and have the goals are met are included. Elements of the Energyplex described are: ammonia from coal, synthetic natural gas plant, coal liquefaction, enhanced oil recovery, use of reject heat from power generation units, greenhouse environmental control, aquaculture, livestock enclosures, and corn… more
Date: June 1, 1979
Creator: Barkhordar, P. M.; Chatterjee, A. K.; Clark, C. F.; Crooks, G.; Dore, J. S.; Martin, P. J. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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