Search

Your search keyword '"Shaw, S.L."' showing total 8 results
Start Over Author "Shaw, S.L."
8 results on '"Shaw, S.L."'

1. Diminishing productivity and hyperstable harvest in northern Wisconsin walleye fisheries.

Author

Mrnak, Joseph T., Embke, H.S., Wilkinson, M.V., Shaw, S.L., Vander Zanden, M.J., and Sass, G.G.

Subjects
LAKE management, FISHERY management, ECOSYSTEM dynamics, ECOLOGICAL disturbances, BIOMASS
Abstract

Managing fisheries in a changing socio-ecological environment may require holistic approaches for identifying and adapting to novel ecosystem dynamics. Using 32 years of Ceded Territory of Wisconsin (CTWI) walleye (Sander vitreus) data, we estimated production (P), biomass (B), biomass turnover (P/B), yield (Y), and yield over production (Y/P) and tested for hyperstability in walleye yield. Most CTWI walleye populations showed low P and B, and Y/P < 1. Yet, production overharvest (Y/P > 1) was prevalent among Wisconsin walleye recruitment-based management approaches (natural recruitment (NR), sustained only by stocking, combination). Production, B, and P/B have declined in NR populations, while Y and Y/P have remained constant. Walleye Y was hyperstable along a production gradient among all management approaches and fishery types (i.e., angling only, angling/tribal harvest combined). Diminishing productivity and hyperstable yield may be jointly contributing to observed walleye declines. We classified lakes into management groups of low, moderate, or high vulnerability to harvest based on Y/P and P/B dynamics and identify that harvest may benefit from declines to maintain or increase the adaptive capacity of CTWI walleye. [ABSTRACT FROM AUTHOR]

Published
2024
Full Text
View/download PDF

4. The response of 14 day weaned pigs to dietary lysine

Author

Kerton, D.J., Shaw, S.L., Pluske, J.R., Campbell, R.G., Cranwell, P.D., King, R.H., Dunshea, F.R., Kerton, D.J., Shaw, S.L., Pluske, J.R., Campbell, R.G., Cranwell, P.D., King, R.H., and Dunshea, F.R.

Abstract

This experiment was designed to investigate the interactions between weaning weight and dietary lysine in pigs weaned at 14 days.

Published
1996

6. Double-Blind, Randomized Study of Nalmefene and Naloxone in Emergency Department Patients With Suspected Narcotic Overdose

Author

Kaplan, J.L., Marx, J.A., Calabro, J.J., Gin-Shaw, S.L., Spiller, J.D., Spivey, W.L., Gaddis, G.M., Zhao, N., and Harchelroad, F.P.

Abstract

Study Objectives: To compare the efficacy, safety, and withdrawal symptoms in emergency department patients with suspected narcotic overdose treated with nalmefene, an opioid antagonist with a 4- to 10-hour duration of action, with those treated with naloxone. Methods: Adults in 9 centers who would otherwise receive naloxone for altered consciousness levels were randomly assigned to receive intravenous study drug (1 mg nalmefene, or 2 mg nalmefene or 2 mg naloxone, double-blinded) every 5 minutes as needed for up to 4 doses in a 4-hour study. Outcomes were 20-minute and 4-hour posttreatment changes in respiratory rates, Neurobehavioral Assessment Scale scores, Opioid Withdrawal Scale scores, and incidences of adverse events. Results: Opioid positivity was recorded for 30 of 63 (1-mg nalmefene), 23 of 55 (2-mg nalmefene), and 24 of 58 (naloxone) cases, 75% of whom also had nonopioid central nervous system depressants. Most patients received only 1 dose of study drug. Similar, clinically meaningful improvements in respiratory rates and Neurobehavioral Assessment Scale scores were seen with all treatments. No statistical differences in efficacy or withdrawal outcomes were seen between treatment groups, and no significant overall time-treatment interactions occurred, in either the entire patient group or among opioid-positive cases (P >.21, all comparisons). Adverse events occurred in 30.9% (2 mg nalmefene), 15.9% (1 mg nalmefene), and 15.5% (naloxone) of patients (P >.08); none were associated with morbidity. Conclusion: In this study of patients with varied potential causes of altered consciousness, nalmefene (1 mg and 2 mg) and naloxone (2 mg) appeared to be efficacious, safe, and to yield similar clinical outcomes. [Kaplan JL, Marx JA, Calabro JJ, Gin-Shaw SL, Spiller JD, Spivey WL, Gaddis GM, Zhao N, Harchelroad FP Jr: Double-blind, randomized study of nalmefene and naloxone in emergency department patients with suspected narcotic overdose. Ann Emerg Med July 1999;34:42-50.]

Published
1999
Full Text
View/download PDF

8. Increasing Isoprene Epoxydiol-to-Inorganic Sulfate Aerosol Ratio Results in Extensive Conversion of Inorganic Sulfate to Organosulfur Forms: Implications for Aerosol Physicochemical Properties

Author

Lei, Z., De Souza, R.A.F., Oliveira, R.L.E., Goldstein, A.H., Jimenez, J.-L., Ribeiro, I.O., Zhao, Y., Ault, A.P., Gold, A., Vizuete, W., Budisulistiorini, S.H., Machado, C.M.D., Narayan, S., Edgerton, E., Riva, M., Duvoisin Junior, S., Pye, H.O.T., Rose, C.A., Shaw, S.L., Martin, S.T., Alves, E.G., Szopa, S., Surratt, J.D., Green, H.S., Yee, L.D., Boyer, H.C., Knipping, E.M., Turpin, B.J., Hu, W., Baumann, K., Zhang, Z., Fort, M., Cui, T., Palm, B.B., Thornton, J.A., Zhang, Y., Dos Santos, E.O., Olson, N.E., Glasius, M., De Sá, S.S., Dutcher, C.S., and Chen, Y.

Subjects
13. Climate action
Abstract

Acid-driven multiphase chemistry of isoprene epoxydiols (IEPOX), key isoprene oxidation products, with inorganic sulfate aerosol yields substantial amounts of secondary organic aerosol (SOA) through the formation of organosulfur compounds. The extent and implications of inorganic-to-organic sulfate conversion, however, are unknown. In this article, we demonstrate that extensive consumption of inorganic sulfate occurs, which increases with the IEPOX-to-inorganic sulfate concentration ratio (IEPOX/Sulfinorg), as determined by laboratory measurements. Characterization of the total sulfur aerosol observed at Look Rock, Tennessee, from 2007 to 2016 shows that organosulfur mass fractions will likely continue to increase with ongoing declines in anthropogenic Sulfinorg, consistent with our laboratory findings. We further demonstrate that organosulfur compounds greatly modify critical aerosol properties, such as acidity, morphology, viscosity, and phase state. These new mechanistic insights demonstrate that changes in SO2 emissions, especially in isoprene-dominated environments, will significantly alter biogenic SOA physicochemical properties. Consequently, IEPOX/Sulfinorg will play an important role in understanding the historical climate and determining future impacts of biogenic SOA on the global climate and air quality.

Catalog

Books, media, physical & digital resources
See catalog results