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In order to better understand the pathways and mechanisms of phosphorus (P) supply under different regimes, 12 sampling sites from 4 basins of 2 lakes were studied seasonally from October 2017 to July 2018 in Wuhan City, China. Concentrations of different forms of P and nitrogen (N) in surface and interstitial water, contents of carbon (C), N, P and iron (Fe) compounds as well as related extracellular enzymatic activities, phosphorus sorption, abundance of phosphorus-solubilizing bacteria (PSB), total and specific (containing phosphatase gene) microbial community composition in sediments were analyzed. In lakes with macrophyte dominance, P supply pathway from sediment to water column was blocked. In lakes being early period of regime shifting from macrophyte to algae, exogenous P input was the main P supply mode. In lakes being later period of regime shifting from macrophyte to algae, organic P hydrolysis and calcium-bound P dissociation driven by PSB contributed greatly to P regeneration, which was continuous and trickling. In this process, rapid C and N cycles fueled P regeneration. In lakes with algal dominance, given the significantly higher iron-bound P (Fe(OOH)~P), equilibriums phosphorus concentration and dehydrogenase activity, the main P regeneration pathway might be the desorption of Fe(OOH)~P driven by anoxia, showing the seasonal and pulsed characteristics. In addition, during the process of regime shift from macrophyte to algae, the dominant algal species switched from cyanobacteria to Chlorophyta. P-solubilizing microorganisms correlated with environmental factors, suggesting the coupling of multiple nutrient cycles, especially C, N, P, oxygen (O) and Fe, could effectively increase the pathways diversification and the strength of P regeneration.

This study aimed to evaluate the impact of isolation form on the recovery of psychological distress in patients with coronavirus disease 2019 (COVID-19) after being discharged from hospital.

Baseline survey was conducted from February 10, 2020 to February 25, 2020 in patients with COVID-19 in a designated hospital on the discharge day. After discharge, patients were free to choose whether isolate in a centralized isolation site (i.e. designated hotel) or their own home for another two weeks. A follow-up survey was conducted at the end of the 2-week post-discharge isolation. Depression, anxiety as well as self-rated health were assessed at both time points using the 9-item patient health questionnaire, 7-item generalized anxiety disorder scale and self-rated health scores, respectively.

Fifty centrally isolated and 45 home isolated patients completed both the baseline and the follow-up assessments. Significant effects of time and time by isolation form were found on depression and anxiety levels, with a ery.

Using six-wave data, the present study examined the influence of parent-child subsystem relational qualities (indexed by parental behavioral control, psychological control, and parent-child relationship) on the initial status and growth trajectory of meaning of life (MOL) in Chinese adolescents.

A total of 2023 high school students in Hong Kong (M age=12.53±0.66 years, 48.0% male students) responded to a questionnaire measuring their perceived parent-child subsystem relational qualities and meaning of life for six consecutive years from 2009/2010. Individual growth curve (IGC) analyses and multiple regression analyses were used.

Results of IGC analyses showed that parental behavioral control and parent-child relationship quality at Wave 1 positively predicted the initial level of adolescent MOL but negatively influenced the growth trajectory of MOL. Parental psychological control at the initial level negatively predicted the initial status of MOL but not the developmental trajectory of adolescent MOL. However, compared with adolescents experiencing poorer parent-child relational subsystem qualities, adolescents with better parent-child relational subsystem qualities showed significantly higher MOL at each time point. Multiple regression analyses also showed that while parent-child relationship quality and paternal behavioral control concurrently and longitudinally exhibited positive predictions on adolescent MOL, the impact of parental psychological control on adolescent MOL showed different patterns in early and late adolescence.

The pioneering findings underline the important role of different parent-child subsystem relational qualities in influencing adolescent MOL.

The pioneering findings underline the important role of different parent-child subsystem relational qualities in influencing adolescent MOL.Graphene oxide (GO) and GO-based materials have gained a significant interest in the membrane synthesis and functionalization sector in the recent years. Inspired by their unique and tuneable properties, several GO-based nanomaterials have been investigated and utilized as effective nanofillers for various membranes in the water treatment, purification and desalination sectors. This paper comprehensively reviews the recent advances of GO utilization in pressure, concentration and thermal-driven membrane processes. A brief overview on GO particles, properties, synthesis and functionalization methods was provided. The conventional and the state-of-art fabrication methods of GO-based membranes were summarized and discussed, and consequently the GO-based membranes were classified into different categories. The applications, types, and the performance in terms of flux and rejection were summarized and reviewed. selleck products The advantages of GO-based membranes in terms of antifouling properties, bactericidal effects, mechanical strength and stability have been reviewed, too. The review gives insights on the future perspectives of GO functional materials and their potential use in the various membrane processes discussed herein.Crop plants are exposed to a variety of contaminants through sewage sludge spreading but very little is known about the impact of emerging contaminants such as nanomaterials. To date their impact on plants is still very controversial with many works claiming negative impacts while some authors suggest their use as plant growth regulator in agriculture. In this study, aiming to better understand where these discrepancies may come from, we investigated the influence of plant species (tomato, rapeseed, cucumber and maize) on plant response to a carbon nanotube contamination in soil condition. Our results demonstrate that the same CNT contamination can lead to different effects depending on plant species with positive impacts on cucumber and rapeseed (more than 50% increase in leaf biomass and surface area and 29% increase in chlorophyll for cucumber) but negative impact on maize (-14% for plant height), while tomato was insensitive. FTIR analysis of biomacromolecule composition suggested that these differences could be related with plant cell wall composition (in particular pectins, xyloglucans and lignins).