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Vanadium (V), released from both natural and anthropogenic sources, occurs in groundwater and surface waters at 0.2–100 µg L −1 (freshwater) and 0.2–29 µg L −1 (seawater). This work evaluates V removal with low-pressure membranes (MV020 and UP150) enhanced with FeCl 3 . The effects of Fe/V molar ratio, transmembrane pressures (TMPs), and membrane type on removal efficiency and flux performance were examined. In a 60-min operat...
Machine Learning–Based Identification of Target Groups for Thrombectomy in Acute StrokeNARA Subscribed
Whether endovascular thrombectomy (EVT) improves functional outcome in patients with large-vessel occlusion (LVO) stroke that do not comply with inclusion criteria of randomized controlled trials (RCTs) but that are considered for EVT in clinical practice is uncertain. We aimed to systematically identify patients with LVO stroke underrepresented in RCTs who might benefit from EVT. Following the premises that (i) patients witho...
Respiratory toxicity of persulphate salts and their adverse effects on airways in hairdressers: a systematic reviewNARA Subscribed
Objective To review the literature on respiratory effects of persulfate salts (PS) or hair bleaches in hairdressers and animal models exploring mechanisms behind PS-induced asthma. Methods A systematic review according to the PRISMA guidelines was performed. Studies published from 2000 to July 2021 that fulfilled predefined eligibility criteria were retrieved. Data were not quantitatively synthesized due to the heterogeneity o...
Light and depth dependency of nitrogen fixation by the non‐photosynthetic, symbiotic cyanobacterium UCYN‐ANARA Subscribed
Summary The symbiotic cyanobacterium UCYN‐A is one of the most globally abundant marine dinitrogen (N 2 )‐fixers, but cultures have not been available and its biology and ecology are poorly understood. We used cultivation‐independent approaches to investigate how UCYN‐A single‐cell N 2 fixation rates (NFRs) and nifH gene expression vary as a function of depth and photoperiod. Twelve‐hour day/night incubations showed that UCYN‐...
Latitudinal constraints on the abundance and activity of the cyanobacterium UCYN‐A and other marine diazotrophs in the North PacificNARA Subscribed
The number of marine environments known to harbor dinitrogen (N 2 )‐fixing (diazotrophic) microorganisms is increasing, prompting a reassessment of the biogeography of marine diazotrophs and N 2 fixation rates (NFRs). Here, we investigate the diversity, abundance, and activity of diazotrophic microorganisms in the North Pacific Subtropical Gyre (NPSG), a diazotrophic habitat, and the North Pacific Transition Zone (NPTZ), a reg...
Summary The symbiotic unicellular cyanobacterium Candidatus Atelocyanobacterium thalassa (UCYN‐A) is one of the most abundant and widespread nitrogen (N 2 )‐fixing cyanobacteria in the ocean. Although it remains uncultivated, multiple sublineages have been detected based on partial nitrogenase ( nifH ) gene sequences, including the four most commonly detected sublineages UCYN‐A1, UCYN‐A2, UCYN‐A3 and UCYN‐A4. However, very lit...
Differential effects of nitrate, ammonium, and urea as N sources for microbial communities in the North Pacific OceanNARA Subscribed
Nitrogen (N) is the major limiting nutrient for phytoplankton growth and productivity in large parts of the world's oceans. Differential preferences for specific N substrates may be important in controlling phytoplankton community composition. To date, there is limited information on how specific N substrates influence the composition of naturally occurring microbial communities. We investigated the effect of nitrate ( ), ammo...
Summary The potential link between the microbial dynamics and the environmental parameters was investigated in a semi‐enclosed and highly dynamic coastal system ( G ulf of T rieste, northern A driatic S ea, NE M editerranean S ea). Our comprehensive 2‐year time‐series study showed that despite the shallowness of this area, there was a significant difference between the surface and the bottom bacterial community structure. The...
Rates of dinitrogen fixation and the abundance of diazotrophs in North American coastal waters between Cape Hatteras and Georges BankNARA Subscribed
We coupled dinitrogen (N 2 ) fixation rate estimates with molecular biological methods to determine the activity and abundance of diazotrophs in coastal waters along the temperate North American Mid‐Atlantic continental shelf during multiple seasons and cruises. Volumetric rates of N 2 fixation were as high as 49.8 nmol N L −1 d −1 and areal rates as high as 837.9 µmol N m −2 d −1 in our study area. Our results suggest that N...