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Institution

University of Saskatchewan

EducationSaskatoon, Saskatchewan, Canada
About: University of Saskatchewan is a education organization based out in Saskatoon, Saskatchewan, Canada. It is known for research contribution in the topics: Population & Health care. The organization has 25021 authors who have published 52579 publications receiving 1483049 citations. The organization is also known as: USask.


Papers
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Journal ArticleDOI
TL;DR: An increase in nodule biomass for plants infected with both rhizobia and mycorrhizal fungi was concluded to be the major factor increasing N2 fixation rates.
Abstract: Carbon flows to vesicular-arbuscular mycorrhizal fungi and rhizobial symbionts of 4- to 5-week-old faba beans, Vicia faba L., were measured by determining the distribution of 14CO2-C fixed by above-ground plant parts. Mycorrhizal fungi of both nodulated and non-nodulated hosts utilized ca. 4% of the C fixed by their hosts. Nodules utilized 6% of the C fixed by non-mycorrhizal hosts and 12% of the C fixed by mycorrhizal hosts. Measured rates of CO2 fixation for symbiotic beans were higher than for non-symbiotic beans. Nodulated root systems of mycorrhizal beans fixed more 15N2 than nodulated root systems of non-mycorrhizal plants. An increase in nodule biomass for plants infected with both rhizobia and mycorrhizal fungi was concluded to be the major factor increasing N2 fixation rates.

221 citations

Journal ArticleDOI
TL;DR: The mean incremental contributions of gender and the gender–by–risk level interactions in the prediction of criminal recidivism were minimal and the relatively strong validity of the LS/CMI risk level was strong, suggesting possible implications for test interpretation and policy.
Abstract: The Level of Service/Case Management Inventory (LS/CMI) and the Youth version (YLS/CMI) generate an assessment of risk/need across eight domains that are considered to be relevant for girls and boys and for women and men. Aggregated across five data sets, the predictive validity of each of the eight domains was gender-neutral. The composite total score (LS/CMI total risk/need) was strongly associated with the recidivism of males (mean r = .39, mean AUC = .746) and very strongly associated with the recidivism of females (mean r = .53, mean AUC = .827). The enhanced validity of LS total risk/need with females was traced to the exceptional validity of Substance Abuse with females. The intra-data set conclusions survived the introduction of two very large samples composed of female offenders exclusively. Finally, the mean incremental contributions of gender and the gender-by-risk level interactions in the prediction of criminal recidivism were minimal compared to the relatively strong validity of the LS/CMI risk level. Although the variance explained by gender was minimal and although high-risk cases were high-risk cases regardless of gender, the recidivism rates of lower risk females were lower than the recidivism rates of lower risk males, suggesting possible implications for test interpretation and policy.

220 citations

Journal ArticleDOI
TL;DR: Results suggest that SDG scavenges úOH and therefore has an antioxidant activity and is investigated using high pressure liquid chromatography method.
Abstract: Recently there has been a moderate resurgence in the use of flax-seed in a variety of ways including bread The scientific basis of its use is very limited There is some claim for beneficial effects in cancer and lupus nephritis These claims could be due to its ability to scavenge oxygen radicals However, its antioxidant activity is not known Recently a method has been developed to isolate secoisolariciresinol diglucoside (SDG) from defatted flax-seed in large quantity (patent pending) We investigated the ability of SDG to scavenge OH using high pressure liquid chromatography (HPLC) method OH was generated by photolysis of H2O2 (125-100 mumoles/ml) with ultraviolet light and was trapped with salicylic acid which is hydroxylated to produce OH-adduct products 2,3-dihydroxybenzoic acid (DHBA) and 2,5-DHBA H2O2 produced a concentration-dependent OH as estimated by 2,3-DHBA and 2,5-DHBA A standard curve was constructed for known concentrations of 2,3-DHBA and 2,5-DHBA against corresponding area under the peaks which then was used for measurement of 2,3-DHBA and 2,5-DHBA generated by UV irradiation of H2O2 in the presence of salicylic acid SDG in the concentration range of 25, 50, 100, 250, 500, 750, 1000 and 2000 micrograms/ml (364, 728, 1456, 3640, 7280, 10920, 14560 and 29120 microM respectively) produced a concentration-dependent decrease in the formation of 2,3-DHBA and 2,5-DHBA, the inhibition being 4 and 465% respectively with 25 micrograms/ml (364 microM) and 82 and 74% respectively with 2000 micrograms/ml (29120 microM) The decrease in OH-adduct products was due to scavenging of OH and not by scavenging of formed 2,3-DHBA and 2,5-DHBA SDG prevented the lipid peroxidation of liver homogenate in a concentration-dependent manner in the concentration range from 3193-25544 microM These results suggest that SDG scavenges OH and therefore has an antioxidant activity

220 citations

Journal ArticleDOI
TL;DR: Raman spectroscopy can be used for the rapid identification of a wide variety of minerals ranging from common iron oxy(hydroxides), such as ferrihydrite, to rare minerals, such as adelite.

220 citations

Journal ArticleDOI
TL;DR: The present scale of use of fipronil and neonicotinoid has resulted in widespread contamination of agricultural soils, freshwater resources, wetlands, non-target vegetation and estuarine and coastal marine systems, which means that many organisms inhabiting these habitats are being repeatedly and chronically exposed to these compounds.
Abstract: The side effects of the current global use of pesticides on wildlife, particularly at higher levels of biological organization: populations, communities and ecosystems, are poorly understood (Kohler and Triebskorn 2013). Here, we focus on one of the problematic groups of agrochemicals, the systemic insecticides fipronil and those of the neonicotinoid family. The increasing global reliance on the partly prophylactic use of these persistent and potent neurotoxic systemic insecticides has raised concerns about their impacts on biodiversity, ecosystem functioning and ecosystem services provided by a wide range of affected species and environments. The present scale of use, combined with the properties of these compounds, has resulted in widespread contamination of agricultural soils, freshwater resources, wetlands, non-target vegetation and estuarine and coastal marine systems, which means that many organisms inhabiting these habitats are being repeatedly and chronically expose...

220 citations


Authors

Showing all 25277 results

NameH-indexPapersCitations
Tomas Hökfelt158103395979
Frederick Wolfe119417101272
Christopher G. Goetz11665159510
John P. Giesy114116262790
Helmut Kettenmann10438040211
Paul M. O'Byrne10460556520
Susan S. Taylor10451842108
Keith A. Hobson10365341300
Mark S. Tremblay10054143843
James F. Fries10036983589
Gordon McKay9766161390
Jonathan D. Adachi9658931641
Wenjun Zhang9697638530
William C. Dement9634043014
Chris Ryan9597134388
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
2023173
2022350
20213,129
20202,913
20192,665
20182,479