Mechanically strong poly (vinyl alcohol) hydrogel with macropores and high porosity

Publication date: Available online 14 February 2020Source: Materials LettersAuthor(s): Heng Li, Cheng-wei Wu, Sen Wang, Wei ZhangAbstractThe macroporous, high porosity and mechanically strong poly (vinyl alcohol) (PVA) hydrogels were developed using agarose (AG) as the pore inducing agent. The AG not only incurs the formation of macropores by promoting the nucleation and growth of ice particles, but also strengthens the mechanical properties by increasing the crystallinity of PVA and the inter-molecular hydrogen bonds. The in vitro cell experiments imply that the obtained PVA hydrogels is cytocompatible and the chondrocytes can proliferate in the macropores.Graphical abstract
Source: Materials Letters - Category: Materials Science Source Type: research

Related Links:

Purpose of review This review attempts to give an update of epidemiological knowledge on head and neck cancers (HNC). Recent findings Worldwide, from 1990 to 2017, incidence rates for larynx and nasopharyngeal cancers decreased, whereas they increased for oro/hypopharyngeal cancers and lip/oral cavity cancers. They are still markedly higher among men than women. South Asia has the highest HNC incidence rate, followed by Europe, North America, and Australasia. Tobacco and alcohol remain the major risk factors. Rate of cancers attributable to human papillomavirus (HPV) among HNCs is highly depending on world region and...
Source: Current Opinion in Oncology - Category: Cancer & Oncology Tags: HEAD AND NECK: Edited by Joël Guigay Source Type: research
Org. Biomol. Chem., 2020, Accepted Manuscript DOI: 10.1039/D0OB00083C, PaperMrinal K Bera, S. Antony Savarimuthu, D.G. Leo Prakash, S. Augustine Thomas, Thirumanavelan Gandhi DBU mediated 5-exo-dig cyclization of isothiocyanate and propargyl alcohol leading to valuable heterocyclic compounds has been accomplished. Different mode of nucleophilicity (either S-selective or N-selective) of isothiocyanates was found to... The content of this RSS Feed (c) The Royal Society of Chemistry
Source: RSC - Organic and Biomolecular Chemistry - Category: Molecular Biology Authors: Source Type: research
Jeffrey A. SingerBack in November the Centers for Disease Control and Prevention announced a “breakthrough” in its investigation into the cause of what is now called EVALI (e‑cigarette vaping associated lung injury): fluid samples from patients revealed the overwhelming majority of cases were due to Vitamin E acetate, used as the solvent in THC ‐​containing vaping liquids. I argued that this discovery provided yet another reason to legalize cannabis.Because cannabis is federally banned, most THC vapers use bootleg cartridges obtained on the black market. Shortly after the discovery that inhaling...
Source: Cato-at-liberty - Category: American Health Authors: Source Type: blogs
Aug 25 - 27, 2020. Sheraton Birmingham, Birmingham, AL. Sponsored by National Association of State Alcohol and Drug Abuse Directors, National Prevention Network
Source: Rural events via the Rural Assistance Center - Category: Rural Health Source Type: events
We present a curious effect observed during the dissolution process of immersed long-chain alcohol drops with an entrapped air bubble. In our experiments a water-immersed sessile droplet of these partially... The content of this RSS Feed (c) The Royal Society of Chemistry
Source: RSC - Soft Matter latest articles - Category: Chemistry Authors: Source Type: research
BACKGROUND: We determined the prevalence of and risk factors for alcohol misuse and illicit drug use among young Ugandans in fishing communities, a recognised "key population" for human immunodeficiency virus (HIV) infection. METHODS: We conducted ...
Source: SafetyLit - Category: International Medicine & Public Health Tags: Age: Adolescents Source Type: news
BACKGROUND: Youth who experience puberty earlier than their peers are at heightened risk for substance use during adolescence. However, little is known about whether pubertal timing exacerbates effects of relevant early risk factors, such as family substan...
Source: SafetyLit - Category: International Medicine & Public Health Tags: Age: Adolescents Source Type: news
BACKGROUND: Suicide is a global issue among the elderly. The number of older people committing suicide is proliferating, and the elderly suicide rate is the highest among all age groups in China. A better understanding of the possible protective factors ag...
Source: SafetyLit - Category: International Medicine & Public Health Tags: Alcohol and Other Drugs Source Type: news
Substance use and misuse is a significant global health issue that requires a sex- and gender-based analysis. Substance use patterns and trends are gendered: that is, women and men, girls and boys, and gender-diverse people often exhibit different rates of...
Source: SafetyLit - Category: International Medicine & Public Health Tags: Alcohol and Other Drugs Source Type: news
Firefighters are an understudied population that reports high rates of alcohol use and hazardous drinking. Pain, which is also commonly experienced by firefighters, may be associated with alcohol use and alcohol use motives, as research among the general p...
Source: SafetyLit - Category: International Medicine & Public Health Tags: Alcohol and Other Drugs Source Type: news
More News: Alcoholism | Materials Science