A new strategy to simultaneously improve the permeability and antifouling properties of EVAL membranes via surface segregation of macrocyclic supra-amphiphiles

Publication date: Available online 16 October 2019Source: Journal of Membrane ScienceAuthor(s): Sisi Ma, Ligang Lin, Qi Wang, Yuhui Zhang, Honglei Zhang, Yixin Gao, Fusheng Pan, Yuzhong ZhangAbstractHerein, we propose a new strategy to improve the flux and antifouling properties of ethylene vinyl alcohol (EVAL) membranes by blending with macrocyclic supra-amphiphiles (cyclodextrin; CD). The amphiphilic ‘molecular cage’ geometry of CD, consisting of a hydrophobic cavity segment and hydrophilic rim segment, induces spontaneous surface segregation of CD to form a CD-enriched layer on the membrane surface. The membrane matrix structure was observed by SEM-EDX, wherein elemental composition indicated a gradient distribution of elemental O content from the top to the bottom layer of the cross-section. The layer segregation was governed by the synergistic interactions with hydrophobic and hydrophilic segments of amphiphilic CD polymer during the phase inversion process. When clickable azide-β-CD was fixed into the clickable alkyne-EVAL matrix as a comparative experiment, no surface segregation was observed. The aggregation of hydrophilic CD on the membrane surface increased the surface roughness, hydrophilicity, and water flux (200 L/m2h) of the membrane. Furthermore, the macrocyclic supra-amphiphile-blended membrane showed better antifouling performance than raw EVAL membrane, with a lower water flux decline (21%) and higher water flux recovery (89%). The propose...
Source: Journal of Membrane Science - Category: Materials Science Source Type: research

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Publication date: Available online 18 November 2019Source: Innovative Food Science &Emerging TechnologiesAuthor(s): Marina Al Daccache, Mohamed Koubaa, Dominique Salameh, Eugène Vorobiev, Richard G. Maroun, Nicolas LoukaAbstractThe effect of moderate pulsed electric fields (PEF) on Hanseniaspora sp. fermentations in apple juice was examined. The treatments were applied prior to or during the fermentation using a field strength of 285 V/cm. A significant increase (p 
Source: Innovative Food Science and Emerging Technologies - Category: Food Science Source Type: research
Publication date: Available online 19 November 2019Source: Social Science &MedicineAuthor(s): Cristian Carmeli, Johan Steen, Dusan Petrovic, Benoît Lepage, Cyrille Delpierre, Michelle Kelly-Irving, Murielle Bochud, Mika Kivimäki, Paolo Vineis, Silvia StringhiniAbstractDisadvantaged socioeconomic conditions in childhood heighten systemic inflammatory levels in adulthood; however, life-course mechanisms underlying this association are largely unknown. In the present observational study, we investigated the roles of adulthood socioeconomic and lifestyle factors in mediating this association.Participants were fr...
Source: Social Science and Medicine - Category: Psychiatry & Psychology Source Type: research
Conclusions: Smoking and substance abuse are common among industrial workers. Tramadol and cannabis are the most commonly abused substances. Smoking, older age, and male sex are correlates of substance abuse. Alcohol abuse is associated with dependence.
Source: Addictive Disorders and Their Treatment - Category: Addiction Tags: Original Articles Source Type: research
Conclusions: These findings show that in Brazil problems related to alcohol use by the elderly remain relatively unknown. There was a high heterogeneity of methodologies in the studies, making it difficult to summarize the findings and produce prevalence estimates for the different patterns of consumption. More homogenous studies using similar definitions of patterns of alcohol consumption are required to allow comparisons to be made between different Brazilian regions and other countries.
Source: Addictive Disorders and Their Treatment - Category: Addiction Tags: Original Articles Source Type: research
Energy&FuelsDOI: 10.1021/acs.energyfuels.9b02811
Source: Energy and Fuels - Category: Chemistry Authors: Source Type: research
(Florida State University) Research from Florida State University is giving physicians a better understanding of ketamine, a potentially useful tool in treating depression that still has unanswered questions. A team of researchers working in the laboratory of Mohamed Kabbaj, a professor of Biomedical Sciences and Neuroscience in the College of Medicine, showed that ketamine can decrease alcohol consumption in male rats that previously had consumed high amounts of alcohol when given unrestricted access several times a week.
Source: EurekAlert! - Medicine and Health - Category: International Medicine & Public Health Source Type: news
CONCLUSION: Starting to drink alcohol in the early teen years predicted current alcohol use, current binge drinking and mixing of alcohol with energy drinks when students were in Grade 12. Findings indicate a need for development of novel alcohol prevention efforts. PMID: 31729312 [PubMed - in process]
Source: Health Promotion and Chronic Disease Prevention in Canada - Category: International Medicine & Public Health Tags: Health Promot Chronic Dis Prev Can Source Type: research
Conclusions: Marked effects of selection on gene expression were detected. The NOT line was characterized by the increased expression of hub nodes associated with mitochondrial function. Genes overexpressed in the SOT aligned with previous findings e.g. Colville et al. (2017) that high ethanol preference and consumption is associated with effects on cell adhesion and glutamate synaptic plasticity.
Source: GEO: Gene Expression Omnibus - Category: Genetics & Stem Cells Tags: Expression profiling by high throughput sequencing Mus musculus Source Type: research
Alcohol consumption is increasing in many countries, and excessive alcohol consumption is particularly increasing among older adults. Excessive alcohol consumption causes morbidity and mortality, especially among older adults, including an increased risk o...
Source: SafetyLit - Category: International Medicine & Public Health Tags: Age: Elder Adults Source Type: news
BACKGROUND: Exposure to interpersonal trauma is highly prevalent within individuals with alcohol use disorder (AUD); however, the mechanisms underlying the pathway between trauma exposure and AUD are unclear. Preliminary evidence suggests that heightened r...
Source: SafetyLit - Category: International Medicine & Public Health Tags: Alcohol and Other Drugs Source Type: news
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