70 research outputs found
Echocardiogram reveals unexpected finding in the investigation of murmur in a hypertensive postpartum patient
Cardiovascular risk factors and increased carotid intima-media thickness in young patients with congenital adrenal hyperplasia due to 21-hydroxylase deficiency
Intraguild predation involving Harmonia axyridis: a review of current knowledge and future perspectives.
As an effective generalist predator of aphids and other hemipteran pests H. axyridis has been a successful biological control agent. However, the very functional traits that have contributed to its success in this regard also implicate it as an intraguild predator that poses a significant risk not only to the diversity of other natural enemies of Hemiptera (and their associated ecosystem services), but to biodiversity more widely. In this paper we will specifically review the existing data on intraguild predation involving H. axyridis, and consider the strength and symmetry of such interactions both within its native guild and within exotic guilds where it has established as an invasive alien. We will use these studies to interpret the observed population declines in predator diversity in the field, predict species at risk in regions not yet invaded and consider implications for resulting ecosystem services. We will also indicate gaps in our knowledge that require further study in order to identify opportunities for mitigation
Effect of applied stress on Îłâ-rafting behavior in a Ni-based single-crystal superalloy: experiments and finite element analysis
Carotid intima media thickness and other cardiovascular risk factors in children with congenital adrenal hyperplasia
An aldo-keto reductase is responsible for Fusarium toxin-degrading activity in a soil Sphingomonas strain
The Spectrum of Congenital Heart Disease and Outcomes After Surgical Repair Among Children With Turner Syndrome: A Single-Center Review
Microbial communities and arsenic biogeochemistry at the outflow of an alkaline sulfide-rich hot spring
Alkaline sulfide-rich hot springs provide a unique environment for microbial community and arsenic (As) biogeochemistry. In this study, a representative alkaline sulfide-rich hot spring, Zimeiquan in the Tengchong geothermal area, was chosen to study arsenic geochemistry and microbial community using Illumina MiSeq sequencing. Over 0.26 million 16S rRNA sequence reads were obtained from 5-paired parallel water and sediment samples along the hot springâs outflow channel. High ratios of As(V)/As(Sum) (total combined arsenate and arsenite concentrations) (0.59â0.78), coupled with high sulfide (up to 5.87âmg/L), were present in the hot springâs pools, which suggested As(III) oxidation occurred. Along the outflow channel, As(Sum) increased from 5.45 to 13.86âÎŒmol/L, and the combined sulfide and sulfate concentrations increased from 292.02 to 364.28âÎŒmol/L. These increases were primarily attributed to thioarsenic transformation. Temperature, sulfide, As and dissolved oxygen significantly shaped the microbial communities between not only the pools and downstream samples, but also water and sediment samples. Results implied that the upstream Thermocrinis was responsible for the transformation of thioarsenic to As(III) and the downstream Thermus contributed to derived As(III) oxidation. This study improves our understanding of microbially-mediated As transformation in alkaline sulfide-rich hot springs
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