Results 11 to 20 of about 2,564,040 (287)

Antioxidative, cytotoxic, and antibacterial properties of self-assembled glycine-histidine-based dipeptides with or without silver nanoparticles in bio-inspired film

open access: yesArhiv za Higijenu Rada i Toksikologiju, 2022
Recent years have seen much attention being given to self-assembly of dipeptide-based structures, especially to self-regulation of dipeptide structures with different amino acid sequences.
Eylul Kiymaci Merve   +2 more
doaj   +1 more source

Antimicrobial Properties of the Ag, Cu Nanoparticle System

open access: yesBiology, 2021
Simple Summary The antimicrobial properties of Ag and Cu nanoparticles, their mixtures and their alloys, are reviewed. Abstract Microbes, including bacteria and fungi, easily form stable biofilms on many surfaces.
Xinzhen Fan, L. Yahia, E. Sacher
semanticscholar   +1 more source

To age or not to age

open access: yesProceedings of the Royal Society of London. Series B: Biological Sciences, 2004
According to the antagonistic pleiotropy theory of ageing, natural selection has favoured genes conferring short-term benefits to the organism at the cost of deterioration in later life. The 'disposable soma' theory expresses this as a life-history strategy in which somatic maintenance is below the level required to prevent ageing, thus enabling higher
Peter D, Sozou, Robert M, Seymour
openaire   +3 more sources

Thickness-dependent humidity sensing by poly(vinyl alcohol) stabilized Au–Ag and Ag–Au core–shell bimetallic nanomorph resistors [PDF]

open access: yesRoyal Society Open Science, 2018
We herein report a simple chemical route to prepare Au–Ag and Ag–Au core–shell bimetallic nanostructures by reduction of two kinds of noble metal ions in the presence of a water-soluble polymer such as poly(vinyl alcohol) (PVA).
Parag Adhyapak   +10 more
doaj   +1 more source

Determination of 14 Trace Elements in Geochemical Samples by ICP-MS Using Kinetic Energy Discrimination Mode

open access: yesYankuang ceshi, 2019
BACKGROUND Traditional inductively coupled plasma-mass spectrometry (ICP-MS) determination of trace elements such as Ag and Cd in geochemical samples is seriously affected by the matrix effect and multiple polyatomic ions, making it difficult to measure ...
XU Jin-li   +6 more
doaj   +1 more source

Plant-inspired adhesive and tough hydrogel based on Ag-Lignin nanoparticles-triggered dynamic redox catechol chemistry

open access: yesNature Communications, 2019
Adhesive hydrogels have gained popularity in biomedical applications, however, traditional adhesive hydrogels often exhibit short-term adhesiveness, poor mechanical properties and lack of antibacterial ability.
Donglin Gan   +8 more
semanticscholar   +1 more source

MARK-AGE biomarkers of ageing [PDF]

open access: yesMechanisms of Ageing and Development, 2015
Many candidate biomarkers of human ageing have been proposed in the scientific literature but in all cases their variability in cross-sectional studies is considerable, and therefore no single measurement has proven to serve a useful marker to determine, on its own, biological age.
Bürkle, Alexander   +29 more
openaire   +7 more sources

Age and Ageing: An Overview [PDF]

open access: yesOccupational Medicine, 2000
Europe is ageing, as exemplified by the UK population where, in the foreseeable future, more people will be over than under age 50: industry appears slow to recognise and appreciate all that older workers still have to offer: bundling them off into early retirement wastes precious talents. Memory difficulty is not an inevitable part of ageing.
openaire   +2 more sources

Structural Sensitivities in Bimetallic Catalysts for Electrochemical CO2 Reduction Revealed by Ag-Cu Nanodimers.

open access: yesJournal of the American Chemical Society, 2019
Understanding the structural and compositional sensitivities of the electrochemical CO2 reduction reaction (CO2RR) is fundamentally important for developing highly efficient and selective electrocatalysts.
Jianfeng Huang   +4 more
semanticscholar   +1 more source

The future of Age and Ageing [PDF]

open access: yesAge and Ageing, 2002
The delivery of healthcare in the United Kingdom is going through a period of change, with many new developments. Some of these represent the aspirations of politicians and those who manage the National Health Service, and others are being forced upon us because of the shortage of resources (not always financial).
openaire   +2 more sources

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