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Sodium alginate/polyvinyl alcohol semi-interpenetrating hydrogels reinforced with PEG-grafted-graphene oxide

Author(s): Mehrjou A; Hadaeghnia M; Ehsani Namin P; Ghasemi I;

Semi-interpenetrating polymer network (SIPN) hydrogels composed of sodium alginate/poly (vinyl alcohol), reinforced by PEG-grafted-graphene oxide (GO-g-PEG) were prepared by ionic crosslinking of sodium alginate. The impact of grafted PEG molecular weight with two molecular weights, i.e. 400 and 2000 g/mol, and component composition were studied on the mo ...

Article GUID: 38423903


Negative Affect and Drinking among Indigenous Youth: Disaggregating Within- and Between-Person Effects

Author(s): Ashley Reynolds

Negative affect (depression/anxiety) and alcohol use among Indigenous youth in Canada remain a concern for many communities. Disparate rates of these struggles are understood to be a potential outcome of colonization and subsequent intergenerational trauma experienced by individuals, families, and communities. Using a longitudinal design, we examined chan ...

Article GUID: 38407776


Patterns of language switching and bilingual children's word learning: An experiment across two communities

Author(s): Tsui RK; Kosie JE; Fibla L; Lew-Williams C; Byers-Heinlein K;

Language switching is common in bilingual environments, including those of many bilingual children. Some bilingual children hear rapid switching that involves immediate translation of words (an 'immediate-translation' pattern), while others hear their languages most often in long blocks of a single language (a 'one-language-at-a-time' patt ...

Article GUID: 38405269


The role of frailty in the relationships between social relationships and health outcomes: a longitudinal study

Author(s): Fereshteh Mehrabi

CONCLUSIONS: The findings suggest that changes in social support have a protective and compensatory role in decreasing depressive symptoms and enhancing cognitive health among older adults with increasing frailty. Public health policy and strategies should consider the impact of social support on multiple health outcomes among older adults with increasing ...

Article GUID: 38402184


Antimicrobial photodynamic therapy against a dual-species cariogenic biofilm using a ruthenium-loaded resin-based dental material

Author(s): Leite ML; Comeau P; Aghakeshmiri S; Lange D; Rodrigues LKA; Branda N; Manso AP;

Background: Streptococcus mutans and Candida albicans are associated with caries recurrence. Therefore, this study evaluated the combination of a Ru(II)-loaded resin-based dental material (RDM) and antimicrobial photodynamic therapy (aPDT) against a dual-species biofilm of S. mutans and C. albicans. Methods: An aPDT protocol was established evaluating Ru ...

Article GUID: 38395246


The burnout-depression conundrum: investigating construct-relevant multidimensionality across four countries and four patient samples

Author(s): Leon T De Beer

This research seeks to contribute to the ongoing discussion about the distinctive nature of burnout and depression. In a first study, we relied on employee samples from four European countries (N = 5199; 51.27% women; M(age) = 43.14). In a second study, we relied on a large sample of patients (N = 5791; 53.70% women; M(age) = 39.54) who received a diagnos ...

Article GUID: 38400520


Microbially Induced Calcium Carbonate Precipitation as a Bioremediation Technique for Mining Waste

Author(s): Wilcox SM; Mulligan CN; Neculita CM;

Mining waste represents a global issue due to its potential of generating acidic or alkaline leachate with high concentrations of metals and metalloids (metal(loid)s). Microbial-induced calcium carbonate precipitation (MICP) is an engineering tool used for remediation. MICP, induced via biological activity, aims to precipitate calcium carbonate (CaCO3) or ...

Article GUID: 38393202


Iron Deposition and Distribution Across the Hippocampus Is Associated with Pattern Separation and Pattern Completion in Older Adults at Risk for Alzheimer's Disease

Author(s): Zhou J; Wearn A; Huck J; Hughes C; Baracchini G; Tremblay-Mercier J; Poirier J; Villeneuve S; Tardif CL; Chakravarty MM; Daugherty AM; Gauthier CJ; Turner GR; Spreng RN;

Elevated iron deposition in the brain has been observed in older adult humans and persons with Alzheimer's disease (AD), and has been associated with lower cognitive performance. We investigated the impact of iron deposition, and its topographical distribution across hippocampal subfields and ...

Article GUID: 38388425


Fear of depression recurrence among individuals with remitted depression: a qualitative interview study

Author(s): Stephanie T Gumuchian

CONCLUSIONS: The concept of FoDR may present a window into understanding the unique cognitive and behavioural changes that occur following MDD remission and underlie depression recurrence. Future research should aim to identify underlying individual differences and characteristics of the disorder that may influence the presence and impact of FoDR. Finally ...

Article GUID: 38383311


Ending the overdose epidemic by ending the war on drug users: Can this work?

Author(s): Leyton M; Krausz RM;

No abstract available

Article GUID: 38383036


Hydrothermal synthesis and electrochemical properties of Sn-based peanut shell biochar electrode materials

Author(s): Wang Y; Wang H; Ji J; You T; Lu C; Liu C; Song Y; Chen Z; Zhu S;

Using activated-carbon-based electrodes derived from waste biomass in super-capacitor energy technologies is an essential future strategy to achieve sustainable energy and environmental protection. Biomass feed-stocks such as bamboo and straw have been used to prepare activated carbon-based electrodes. This experiment used peanut shells (waste biomass) as ...

Article GUID: 38380232


Cone allometry and seed protection from fire are similar in serotinous and nonserotinous conifers

Author(s): Greene DF; Kane JM; Pounden E; Michaletz ST;

Serotiny is an adaptive trait that allows certain woody plants to persist in stand-replacing fire regimes. However, the mechanisms by which serotinous cones avoid seed necrosis and nonserotinous species persist in landscapes with short fire cycles and serotinous competitors remain poorly understood. To investigate whether ovulate cone traits that enhance ...

Article GUID: 38375897


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