Search Results - "Hayes, D.G."

Mechanical formation of micro- and nano-plastic materials for environmental studies in agricultural ecosystems by Astner, A.F., Hayes, D.G., O'Neill, H., Evans, B.R., Pingali, S.V., Urban, V.S., Young, T.M.

“…Release of microplastics (MPs) and nanoplastics (NPs) into agricultural fields is of great concern due to their reported ecotoxicity to organisms that provide…”
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On the temperature and carrier density dependence of electron saturation velocity in an AlGaN/GaN HEMT by Oxley, C.H., Uren, M.J., Coates, A., Hayes, D.G.

“…The temperature and carrier density dependence of electron intrinsic saturation velocity (v/sub si/) in a 0.3-/spl mu/m gate length AlGaN/GaN HEMT was…”
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Analysis of DC-RF Dispersion in AlGaN/GaN HFETs Using RF Waveform Engineering by Roff, C., Benedikt, J., Tasker, P.J., Wallis, D.J., Hilton, K.P., Maclean, J.O., Hayes, D.G., Uren, M.J., Martin, T.

“…This paper describes how dc-radio-frequency (RF) dispersion manifests itself in AlGaN/GaN heterojunction field-effect transistors when the devices are driven…”
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catalytic activity of lipases toward hydroxy fatty acids--a review by Hayes, D.G

“…Hydroxy fatty acids, derived from several natural and synthetic sources, have many applications. Lipases have been employed to catalyze reactions involving…”
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Assessment of cryogenic pretreatment for simulating environmental weathering in the formation of surrogate micro- and nanoplastics from agricultural mulch film by Astner, A.F., Hayes, D.G., O'Neill, H., Evans, B.R., Pingali, S.V., Urban, V.S., Schaeffer, S.M., Young, T.M.

“…Microplastics (MPs) and nanoplastics (NPs) from mulch films and other plastic materials employed in vegetable and small fruit production pose a major threat to…”
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Melittin exerts opposing effects on short- and long-range dynamics in bicontinuous microemulsions by Sharma, V.K., Hayes, D.G., Urban, V.S., O'Neill, H., Tyagi, M., Mamontov, E.

“…[Display omitted] Bicontinuous microemulsions (BμEs) are a promising biomembrane mimetic system for investigating the behavior of antimicrobial peptides (AMPs)…”
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Efficient Reduction of Chitosan Molecular Weight by High-Intensity Ultrasound: Underlying Mechanism and Effect of Process Parameters by Wu, Tao, Zivanovic, Svetlana, Hayes, Douglas G, Weiss, Jochen

“…The degradation of chitosan by high-intensity ultrasound (HIU) as affected by ultrasound parameters and solution properties was investigated by gel permeation…”
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Integration of a superlattice limiter into the HBT emitter for improved operational reliability by Hayes, D.G., Higgs, A.W., Smith, G.W., Birbeck, J.C.H., Wilding, P.J.

“…A common problem limiting the output power of multiple finger heterojunction bipolar transistors (HBT's) is nonuniform current flow in the fingers, resulting…”
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Enzyme-catalyzed modification of oilseed materials to produce eco-friendly products by Hayes, D.G

“…Novel products produced from seed oil materials (TAG, phospholipids, and minor components such as tocopherols, sterols, stanols, and fatty acyl esters of the…”
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Effect of temperature programming on the performance of urea inclusion compound-based free fatty acid fractionation by Hayes, D.G

“…The effect of cooling rate on the degree of removal of saturated acyl groups from FFA derived from canola oil and the isolation of di‐ and polyunsaturated acyl…”
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Mechanism of protein extraction from the solid state by water-in-oil microemulsions by Hayes, Douglas G.

“…The extraction of solid‐phase α‐chymotrypsin, bovine serum albumin (BSA), and lysozyme by water‐in‐oil microemulsion (w/o‐ME) solution containing Aerosol‐OT…”
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Urea complexation for the rapid, ecologically responsible fractionation of fatty acids from seed oil by Hayes, D.G. (University of Alabama, Huntsville, AL.), Bengtsson, Y.C, Alstine, M.M.V, Setterwall, F

“…Urea complex formation is a classic method for fractionating fatty acids from seed and other oils. The method’s simplicity, ease of scaling, and ecological…”
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Ethylene Glycol and a Fatty Acid Have a Profound Impact on the Behavior of Water-in-Oil Microemulsions Formed by the Surfactant Aerosol-OT by Hayes, Douglas G, Gulari, Erdogan

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Lipase-catalyzed synthesis and properties of estolides and their esters by Hayes, D.G. (University of Alabama-Huntsville, AL.), Kleiman, R

“…Eight lipases were screened for their ability to synthesize estolides from a mixture that contained lesquerolic (14‐hydroxy‐11‐eicosenoic) acid and…”
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Urea-based fractionation of seed oil samples containing fatty acids and acylglycerols of polyunsaturated and hydroxy fatty acids by Hayes, D.G, Van Alstine, J.M, Setterwall, F

“…The selectivity and efficiency of urea complex (UC) formation‐based fractionation of free fatty acids (FFA) were examined. A rapid, simple, and inexpensive…”
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Expulsion of proteins from water-in-oil microemulsions by treatment with cosurfactant by Hayes, Douglas G., Marchio, Christina

“…A quick and simple method has been developed for the recovery of proteins from water‐in‐oil microemulsions (w/o‐MEs), which is needed to further the use of…”
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Indium Antimonide Based Technology for RF Applications by Ashley, T., Buckle, L., Emeny, M.T., Fearn, M., Hayes, D.G., Hilton, K.P., Jefferies, R., Martin, T., Phillips, T.J., Powell, J., Tang, A.W.H., Wallis, D., Wilding, P.J.

“…Indium antimonide has the highest electron mobility and saturation velocity of any semiconductor, so gives the prospect of extremely high frequency operation…”
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Lipase-catalyzed synthesis of lesquerolic acid wax and diol esters and their properties by Hayes, D.G. (University of Alabama-Huntsville, Huntsville, AL.), Kleiman, R

“…Lesquerolic acid was and α,Ω‐diol esters were synthesized via immobilizedRhizomucor miehei lipase‐(Lipozyme) catalyzed esterification of lesquerolic acid and…”
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Utilization of waveform measurements for degradation analysis of AlGaN/GaN HFETs by Roff, Chris, Bennedikt, J., Tasker, Paul J., Wallis, D.J., Hilton, K.P., Maclean, J.O., Hayes, D.G., Uren, M. J., Martin, T.

“…This paper employs, for the first time, RF waveform engineering to monitor device degradation over an RF "burn in" period. Measured RF current and voltage…”
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A detailed triglyceride analysis of Lesquerella fendleri oil: column chromatographic fractionation followed by supercritical fluid chromatography by HAYES, D. G, KLEIMAN, R

“…Abstract The triglyceride structure of oil from Lesquerella fendleri , a potential new U.S. crop, rich in C 20 hydroxy fatty acids, was examined by silica gel…”
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