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Predicting total petroleum hydrocarbons in field soils with Vis-NIR models developed on laboratory-constructed samples.
J Environ Qual
July 2020
Dep. of Plant and Soil Science, Texas Tech Univ., Lubbock, TX, 79409, USA.
Accurate quantification of petroleum hydrocarbons (PHCs) is required for optimizing remedial efforts at oil spill sites. While evaluating total petroleum hydrocarbons (TPH) in soils is often conducted using costly and time-consuming laboratory methods, visible and near-infrared reflectance spectroscopy (Vis-NIR) has been proven to be a rapid and cost-effective field-based method for soil TPH quantification. This study investigated whether Vis-NIR models calibrated from laboratory-constructed PHC soil samples could be used to accurately estimate TPH concentration of field samples.
View Article and Find Full Text PDFBioaccumulation and trophodynamics of the antidepressants sertraline and fluoxetine in laboratory-constructed, 3-level aquatic food chains.
Environ Toxicol Chem
April 2017
Aquatic Ecology, Department of Biology, Lund University, Lund, Sweden.
Although reports of pharmaceutical bioconcentration in aquatic organisms are increasing, less is known about trophic transfer in aquatic food webs. The bioaccumulation and trophodynamics of sertraline and fluoxetine, 2 selective serotonin reuptake inhibitors (SSRIs) frequently detected in aquatic environments, were tested by exposing constructed aquatic food chains to SSRIs under controlled laboratory conditions. Both of these ionizable, weak base pharmaceuticals showed lower bioaccumulation factors (BAFs) with increasing trophic level (i.
View Article and Find Full Text PDFThe relationship between access to and use of dental services following expansion of a primary care service to embrace dental team training.
Public Health
November 2013
Department of Dental Public Health, King's College London, UK. Electronic address:
Objectives: To investigate changes in the patient population and treatment case-mix within an expanded primary care dental training facility in Southern England.
Study Design: Cross-sectional analysis of patient management system data.
Method: Electronic data for patients with a closed/completed treatment plan in the 12-month period prior to, and following, dental service expansion were extracted for analysis (n = 4343).
In vivo capsular switch in Streptococcus pneumoniae--analysis by whole genome sequencing.
PLoS One
April 2013
Center for Genomic Sciences, Allegheny Singer Research Institute, Pittsburgh, Pennsylvania, United States of America.
Two multidrug resistant strains of Streptococcus pneumoniae - SV35-T23 (capsular type 23F) and SV36-T3 (capsular type 3) were recovered from the nasopharynx of two adult patients during an outbreak of pneumococcal disease in a New York hospital in 1996. Both strains belonged to the pandemic lineage PMEN1 but they differed strikingly in virulence when tested in the mouse model of IP infection: as few as 1000 CFU of SV36 killed all mice within 24 hours after inoculation while SV35-T23 was avirulent.Whole genome sequencing (WGS) of the two isolates was performed (i) to test if these two isolates belonging to the same clonal type and recovered from an identical epidemiological scenario only differed in their capsular genes? and (ii) to test if the vast difference in virulence between the strains was mostly - or exclusively - due to the type III capsule.
View Article and Find Full Text PDFPhysiological and genetic stability of hybrids of industrial wine yeasts Saccharomyces sensu stricto complex.
J Appl Microbiol
June 2011
Institute of Fermentation Technology and Microbiology, Technical University of Lodz, Lodz, Poland.
Aims: The aim of this study was to examine the physiological and genetic stability of hybrids of industrial wine yeasts Saccharomyces sensu stricto complex subjected to acidic stress during fermentation.
Methods And Results: Laboratory-constructed yeast hybrids, one intraspecific Saccharomyces cerevisiae × S. cerevisiae and three interspecific S.
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