A rechargeable zinc-air battery based on zinc peroxide chemistry
Rechargeable alkaline zinc-air batteries promise high energy density and safety but suffer from the sluggish 4 electron (e–)/oxygen (O2) chemistry that requires participation of water and from the electrochemical irreversibility originating from parasitic reactions caused by caustic electrolytes and atmospheric carbon dioxide. Here, we report a zinc-O2/zinc peroxide (ZnO2) chemistry that proceeds through a 2e–/O2 process in nonalkaline aqueous electrolytes, which enables highly reversible redox reactions in zinc-air batteries. This ZnO2 chemistry was made possible by a water-poor and zinc ion (Zn2+)–rich ...
Source: ScienceNOW - December 31, 2020 Category: Science Authors: Sun, W., Wang, F., Zhang, B., Zhang, M., Küpers, V., Ji, X., Theile, C., Bieker, P., Xu, K., Wang, C., Winter, M. Tags: Chemistry, Materials Science r-articles Source Type: news
Steps toward translocation-independent RNA polymerase inactivation by terminator ATPase {rho}
Factor-dependent transcription termination mechanisms are poorly understood. We determined a series of cryo–electron microscopy structures portraying the hexameric adenosine triphosphatase (ATPase) on a pathway to terminating NusA/NusG-modified elongation complexes. An open ring contacts NusA, NusG, and multiple regions of RNA polymerase, trapping and locally unwinding proximal upstream DNA. NusA wedges into the ring, initially sequestering RNA. Upon deflection of distal upstream DNA over the RNA polymerase zinc-binding domain, NusA rotates underneath one capping subunit, which subsequently captures RNA. After detach...
Source: ScienceNOW - December 31, 2020 Category: Science Authors: Said, N., Hilal, T., Sunday, N. D., Khatri, A., Bürger, J., Mielke, T., Belogurov, G. A., Loll, B., Sen, R., Artsimovitch, I., Wahl, M. C. Tags: Biochemistry, Online Only r-articles Source Type: news
Extracting precious zinc from waste ash
(Chalmers University of Technology) Incineration of solid waste produces millions of tonnes of waste fly ash in Europe each year, that most commonly ends up in landfill. But this ash often contains significant amounts of precious metals, such as zinc. A unique method developed by researchers at Chalmers University of Technology, Sweden, can now help extract these precious metals, potentially leading to reductions in environmental pollution, landfill and transport. (Source: EurekAlert! - Biology)
Source: EurekAlert! - Biology - December 16, 2020 Category: Biology Source Type: news
Voco Introduces Provicol QM Aesthetic Translucent Zinc Oxide, Non-Eugenol Temporary Cement with Calcium Hydroxide
Introducing Provicol QM Aesthetic, a zinc oxide-based transparent non-eugenol temporary cement that secures provisional crowns and bridges without affecting the overlying color of the restoration.This zinc oxide-based formula promotes anti-bacterial properties as well as an ideal adhesion and strength with a semi-elastic consistency that allows for easy clean up. Distinct from resin-based temporary cements, zinc-oxide cements do not permanently bond to composite core build-ups, therefore simplifying the removal of temporaries..The new and innovative glass matrix with polyhedral particles allows for a translucency only achi...
Source: Dental Technology Blog - December 16, 2020 Category: Dentistry Source Type: news
Abbott Develops New Pedialyte(R) Hydration Solution to Help Support Immune Health
New product contains zinc, prebiotics and vitamins B12, C and E
Abbott expands its Pedialyte product portfolio with four new product introductions: Pedialyte with Immune Support, Pedialyte Sport, Pedialyte Organic and Pedialyte Electrolyte Water with Ze... Biopharmaceuticals, Product Launch Abbott, Pedialyte, Immune Health (Source: HSMN NewsFeed)
Source: HSMN NewsFeed - December 14, 2020 Category: Pharmaceuticals Source Type: news
Abbott Develops New Pedialyte ® Hydration Solution to Help Support Immune Health
- New product contains zinc, prebiotics and vitamins B12, C and E (Source: Abbott.com)
Source: Abbott.com - December 14, 2020 Category: Pharmaceuticals Source Type: news
Hair loss treatment: Increasing your iron and zinc could help to increase hair growth
HAIR loss treatment: To help combat a person's thinning hair, going to the root of the problem is best. Health experts advise most hair loss could be due to a deficiency in macronutrients. Iron and zinc are integral for healthy hair growth and by increasing your levels you could help increase hair growth. How? (Source: Daily Express - Health)
Source: Daily Express - Health - December 12, 2020 Category: Consumer Health News Source Type: news
Best supplements: Zinc supplementation could help reduce a cold, diarrhoea and diabetes
BEST supplements: Zinc is a trace element that is necessary for a healthy immune system. Studies suggest supplementation with zinc can help with colds, diarrhoea and diabetes risk. (Source: Daily Express - Health)
Source: Daily Express - Health - November 29, 2020 Category: Consumer Health News Source Type: news
Nature's toolkit for killing viruses and bacteria
(American Physical Society) Engineers reveal how zinc oxide nanoneedles and droplet hydrodynamics can stop pathogens. (Source: EurekAlert! - Infectious and Emerging Diseases)
Source: EurekAlert! - Infectious and Emerging Diseases - November 23, 2020 Category: Infectious Diseases Source Type: news
A rich source of nutrients under the Earth's ice sheets
(GFZ GeoForschungsZentrum Potsdam, Helmholtz Centre) Trace elements such as iron and zinc are essential micronutrients for all kinds of organisms. Below ice sheets, which cover around ten percent of the Earth's land surface, larger quantities of these substances are mobilised than previously assumed. This is shown by new data from Greenland and Antarctica, which were collected and analysed by an international research team led by Jon Hawkings from the GFZ German Research Centre for Geosciences and Florida State University (USA). (Source: EurekAlert! - Medicine and Health)
Source: EurekAlert! - Medicine and Health - November 23, 2020 Category: International Medicine & Public Health Source Type: news
Why Not Try Melatonin, Zinc, Vit C? COVID-19 and Pascal's Wager Why Not Try Melatonin, Zinc, Vit C? COVID-19 and Pascal's Wager
Should patients be free to try relatively low-risk therapies for COVID-19 if they lack evidence of benefit?Medscape (Source: Medscape Today Headlines)
Source: Medscape Today Headlines - November 17, 2020 Category: Consumer Health News Tags: Infectious Diseases Commentary Source Type: news
Gut check: Teff grain boosts stomach microbiome health
(Cornell University) Cornell University food scientists confirm that the grain teff helps the stomach and enhances the nutritional value of iron and zinc, according to a new modeling method. (Source: EurekAlert! - Medicine and Health)
Source: EurekAlert! - Medicine and Health - November 13, 2020 Category: International Medicine & Public Health Source Type: news
Effects of Transient Receptor Potential Cation 5 (TRPC5) Inhibitor, NU6027, on hippocampal neuronal death after traumatic brain injury - Park MK, Choi BY, Kho AR, Lee SH, Hong DK, Jeong JH, Kang DH, Kang BS, Suh SW.
Traumatic brain injury (TBI) can cause physical, cognitive, social, and behavioral changes that can lead to permanent disability or death. After primary brain injury, translocated free zinc can accumulate in neurons and lead to secondary events such as oxi... (Source: SafetyLit)
Source: SafetyLit - November 11, 2020 Category: International Medicine & Public Health Tags: Economics of Injury and Safety, PTSD, Injury Outcomes Source Type: news
Low Zinc Levels Linked to Increased Risk of Death in COVID-19 Low Zinc Levels Linked to Increased Risk of Death in COVID-19
New research suggests that lower levels of baseline plasma zinc are associated with poorer survival outcomes in patients hospitalised with COVID-19.Medscape Medical News (Source: Medscape Medical News Headlines)
Source: Medscape Medical News Headlines - October 8, 2020 Category: Consumer Health News Tags: Infectious Diseases News Source Type: news
Donald Trump receiving Covid-19 treatment yet to be peer-reviewed
President ’s doctor reveals treatment with experimental antibody cocktail REGN-COV2Coronavirus – latest updatesSee all our coronavirus coverageDonald Trump is being treated with an experimental antibody drug that has shown promising initial early results but has yet to be peer-reviewed. According to statement from his doctor, the president has received a single eight-gram dose of anantibody cocktail called REGN-COV2– a combination of two human neutralising antibodies against the virus.The treatment was developed by Regeneron Pharmaceuticals, which previously developed a similar antibody drug against Ebola. He is also...
Source: Guardian Unlimited Science - October 2, 2020 Category: Science Authors: Melissa Davey, Ian Sample and agencies Tags: Donald Trump Coronavirus outbreak US news Infectious diseases Microbiology Medical research Science Source Type: news
