Results 101 to 110 of about 776,948 (400)

Designing Physical Unclonable Functions From Optically Active Materials

open access: yesAdvanced Materials, EarlyView.
Assigning unforgeable “fingerprints” to manufactured goods is a key strategy to fight global counterfeiting. Optical physical unclonable functions (PUFs) are chemically generated random patterns of optically active materials serving as unique authenticators.
Maxime Klausen   +2 more
wiley   +1 more source

Electronic Spectroscopy of Isolated DNA Polyanions

open access: yes, 2018
In solution, UV-vis spectroscopy is often used to investigate structural changes in biomolecules (i.e., nucleic acids), owing to changes in the environment of their chromophores (i.e., the nucleobases).
Daly, Steven   +3 more
core   +2 more sources

Separation of Oligosaccharides from Lotus Seeds via Medium-pressure Liquid Chromatography Coupled with ELSD and DAD [PDF]

open access: yes, 2017
peer-reviewedLotus seeds were identified by the Ministry of Public Health of China as both food and medicine. One general function of lotus seeds is to improve intestinal health.
AD Orozco-Cortes   +39 more
core   +1 more source

Direct Photopatterning of Green Solvent‐Processed 2D Nanomaterials for Wafer‐Scale Electronics

open access: yesAdvanced Materials, EarlyView.
A photocross‐linking strategy is proposed for the patterning and integration of scalable vertical van der Waals heterostructures such as field‐effect transistors, logic gates, and memory devices composed of 2D nanomaterials by UV light‐sensitive cross‐linker in isopropyl alcohol.
In Cheol Kwak   +13 more
wiley   +1 more source

Generic sample preparation combined with high-resolution liquid chromatography- time-of-flight mass spectrometry for unification of urine screening in doping-control laboratories [PDF]

open access: yes, 2010
A unification of doping-control screening procedures of prohibited small molecule substances—including stimulants, narcotics, steroids, ß2-agonists and diuretics—is highly urgent in order to free resources for new classes such as banned proteins ...
Georgakopoulos, C.G.   +4 more
core   +3 more sources

Nanobubbles in Electrospray Ionization Mass Spectrometry

open access: yesAnalytical Chemistry
Nanobubbles (NBs) are very small gas-filled cavities in solvents, and when their sizes reach diameters around 200 nm, they remain in solution for extended periods of time, featuring special chemical and physical properties. Here, we investigate the application of NBs in electrospray ionization.
George Joseph   +2 more
openaire   +2 more sources

Recent Advances in Reactive Microdroplets for Clean Water and Energy

open access: yesAdvanced Materials, EarlyView.
Reactive microdroplets enable precise and sustainable chemistry at small scales. This review explores their role as confined reactors and dynamic interfaces for synthesizing functional materials, fuels, and microdevices. It offers a critical perspective on how droplet‐based platforms can drive next‐generation technologies in clean energy, environmental
Qiuyun Lu   +4 more
wiley   +1 more source

The analysis of the Saltzman Collection of Peruvian dyes by high performance liquid chromatography and ambient ionisation mass spectrometry

open access: yesHeritage Science, 2019
Yarn samples from the Saltzman Collection of Peruvian dyes were characterized by several different analytical techniques: high performance liquid chromatography with both diode array detection (HPLC-DAD) and electrospray ionisation with tandem mass ...
Ruth Ann Armitage   +3 more
doaj   +1 more source

Characterisation of antibacterial peptides from the venom of Cupiennius salei (Araneae: Ctenidae). Diplomarbeit am Zoologischen Institut der Universität Bern, 19 S. [PDF]

open access: yes, 2013
The characterisation of the antimicrobial activity of six antibacterial peptides, isolated from the venom of the neotropical wandering spider Cupiennius salei is reported.
Haeberli, Stefanie
core  

Disruption of Sulfur Metabolism and Redox Homeostasis in Staphylococcus aureus Using Mechanically Robust Antibiofilm Ti‐Bi Alloys

open access: yesAdvanced Materials Interfaces, EarlyView.
Titanium (Ti) and bismuth (Bi) are selected as alloying elements for the preparation of the Ti‐Bi binary alloy system. Biofilm formation is found to be inhibited by bismuth through the disruption of sulfur metabolism and redox homeostasis, as well as through the direct downregulation of biofilm‐associated proteins.
Lei Shi   +10 more
wiley   +1 more source

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