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Deposition - Europe PMC

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Last Updated: 03 August 2022

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Effects of simulated nitrogen deposition on the soil microbial community diversity of a Deyeuxia angustifolia wetland in the Sanjiang Plain, Northeastern China

The soil microbial community is a key bioactive component of terrestrial ecosystems. In a wetland with different nitrogen deposition conditions, this report was intended to investigate the variations in soil bacterial communities' diversity and composition. RESULT: Higher N deposition results resulted in an increase in u03b1-diversity followed by a decrease, with drastic reductions in the HN treatment. In changes in the morphology and occurrence of bacterial communities in wetland soils, Simulated nitrogen deposition resulted in changes in the structure and abundance of bacterial colonies. The relative abundance of Chloroflexi increased significantly under HN treatment compared to CK, while the relative abundance of Firmicutes and Bacteroidetes decreased dramatically. CONCLUSION: This research provides a theoretical basis for predicting the effects of atmospheric nitrogen deposition on soil microorganisms and soil microorganisms, as well as changes in the Sanjiang Plain wetland ecosystem.

Source link: https://europepmc.org/article/MED/IND607702419


Yunpi Heluo decoction reduces ectopic deposition of lipids by regulating the SIRT1-FoxO1 autophagy pathway in diabetic rats.

Context Yunpi Heluo decoction is a Chinese herbal product with particular benefits for treating type 2 diabetes. The aim is to investigate the clinical effect of YPHL on ectopic lipid deposition in Zucker diabetic fatty rats and the underlying mechanism. By transmission electron microscopy, pancreatic u03b2-cells obtained from high-lipid-high-glucose fed rats were treated with YPHL for 48 h. Lipid deposition and autophagosomes were determined by transmission electron microscopy. By flow cytometry, Intracellular H 2 O 2 and ROS concentrations were determined. Result Compared to the control group, blood glucose levels in the YPHL and siRT1 groups were reduced by 19. 3% and 27. 9%, respectively. H2O 2 and ROS values were observed in high-lipid-rich glucose cells treated with YPHL, lipid droplets were reduced and reduced in apoptosis rate, as well as decrease in apoptosis rate. The expression of proteins in SIRT1 and LC3 in model, siRT1, si-NC, and si-SIRT1 + YPHL groups was lower than those in the control group, although FoxO1 was raised.

Source link: https://europepmc.org/article/MED/35244516


Large-area high spatial resolution albedo retrievals from remote sensing for use in assessing the impact of wildfire soot deposition on high mountain snow and ice melt

Soot deposition spawns algal formation, which in turn reduces snow and ice altitude, which also reduces snow and ice altitude. ice algal growth is also promoted by algal bloom, which further reduces snow and ice altitude. In recent years, more frequent and widespread wildfire fires have raged in western Canada in association with climate change. Westerly winds carried smoke from large record-breaking wildfires in British Columbia eastward to the Canadian Rockies, where substantial amounts of soot were deposit on high mountain glaciers, snowfields, and icefields. Several studies have addressed the issue of soot deposition on snow and ice, but the spatiotemporal resolution used has not been appropriate for analyzing mountain icefields that are large but have high internal variability and dynamical albedos. This report examines spatial trends in the albedo decline and net shortwave radiation rise in Western Canada deposited on the Columbia Icefield, Canadian Rockies, during 2017 and 2018. Using a MODIS bidirectional reflectance distribution function model, which was used to model the snow and ice reflectance anisotropy, four summers, twelve Sentinel-2 images were used to produce high spatial resolution albedo retrievals during four summers. The highest inter-annual spatially averaged soot-induced shortwave radiative force in the snow plateau was 203 W/m/u00b2 for southeast-facing glaciers and 106 W/mu00b2 for the snow plateau. Large-area high spatial resolution albedo studies are used to investigate the effects of wildfire soot deposition on snow and ice albedo and K* on icefields, which is not feasible using other methods.

Source link: https://europepmc.org/article/MED/IND607786878


Agricultural ammonia dry deposition and total nitrogen deposition to a Swiss mire

This report was designed to measure and evaluating total N inputs to a mire in the Swiss Alpine foothills during 2007-2013, focusing on NHu2083 dry deposition. Using three surfaceu2013vegetationu2013atmosphere transfer models were used to determine dry deposition of NH2083 based on micrometeorological results in conjunction with monthly passive sampler NH 2083 concentration data. According to N ho's edification, the prime N load for raised bogs was 1. 5 kg/u2013. u2013. b9 aab9 (u2013)u00b9 aab9, much higher than the lower limits for oligotrophic fens and mountain hay meadows, which was also higher than the lower limits for oligotrophic fens and mountain hay meadows.

Source link: https://europepmc.org/article/MED/IND607765077


Comprehensive rear surface passivation of superstrate Sb 2 Se 3 solar cells via post-deposition selenium annealing treatments and the application of an electron blocking layer.

However, the possibility of Se deficiency following a high-temperature deposition of Sb 2 Se 3 during cooling may result in Se deficiency, as well as the development of deep-level donor-like defects, such as Se vacancies and Sb on Se antisite defects. Sb 2 Se 3 solar cells' rear interface in a superstrate structure, including a post-deposition annealing process under Se, and the addition of an electron-blocking layer between Sb 2 Se 3 solar cells' rear interface and the rear metal contact. PAT effectively passedivated the defects associated with Se deficiency, resulting in a large increase in the open-circuit voltage and fill factor of Sb 2 Se 3 solar cells. With the addition of a poly electron-blocking layer, the Sb 2 Se 3 solar cell's efficiency increased by 7. 0%.

Source link: https://europepmc.org/article/MED/35916303


Initial levels of β-amyloid and tau deposition have distinct effects on longitudinal tau accumulation in Alzheimer’s disease

Background: defining the relative roles of u03b2-amyloid plaques and tau tangles in longitudinal tau replication and dissemination within and outside the medial temporal lobe, as well as how age, sex, APOE-4, and Klotho-VS heterozygosity influence their interactions in Alzheimer's disease can influence human reproduction and dissemination of Alzheimer's disease. We compared the baseline and slopes of A+/T- and A+/T-t + people without neurodegeneration of 162 A+/T-tangles and Temporal-metaROI tau tangles with those of 162 A-/T-t-scientific individuals with neurodegeneration. A+/T- participants' t-test results in entorhinal, amygdala, and parahippocampal were positively associated with greater tau deposition gains in A+/T-test participants. In addition, KL-VS het+ carriers demonstrated significantly less longitudinal tau accumulation in the fusiform and inferior temporal regions compared to the KL-VS hetu2212 group.

Source link: https://europepmc.org/article/PPR/PPR526628


Performance enhancement of nitrogen-polar GaN-based light-emitting diodes prepared by metalorganic chemical vapor deposition.

However, the poor quality of N-polar nitride materials hinders the manufacture of N-polar devices. During the growth of the quantum barrier layers, we improved the quality of the In-polar InGaN/GaN DQWs by raising the growth temperature and adding hydrogen as the carrier gas during the process. The optimized N-polar DQWs have a significantly longer emission wavelength than Ga-polar DQWs grown at the same QW growth temperature, which is particularly noteworthy. This research provides a cost-effective solution to improving the quality of the N-polar InGaN/GaN QW unit, as well as the development of N-polar GaN-based long-wavelength light-emitting systems for micro-LED displays.

Source link: https://europepmc.org/article/MED/35913275

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions