Results 51 to 60 of about 3,955 (225)

Highly Sensitive Electrochemical Biosensor Based on Hairy Particles with Controllable High Enzyme Loading and Activity

open access: yesAdvanced Functional Materials, EarlyView.
For the first time, a highly sensitive electrochemical biosensor based on SiO2‐based hairy particles with a grafted PDMAEMA polymer brush containing a quantifiable and large amount of immobilized Laccase is reported. The fabricated biosensor exhibits a sensitivity of 0.14 A·m⁻¹, a limit of detection (LOD) of 0.1 µm, and a detection range of 0.3–750 µm,
Pavel Milkin   +7 more
wiley   +1 more source

The organic complexation of iron in the marine environment: a review [PDF]

open access: yes, 2012
Iron (Fe) is an essential micronutrient for marine organisms, and it is now well established that low Fe availability controls phytoplankton productivity, community structure, and ecosystem functioning in vast regions of the global ocean.
Gledhill, Martha, Buck, Kristen N.
core   +2 more sources

Substrate Stress Relaxation Regulates Cell‐Mediated Assembly of Extracellular Matrix

open access: yesAdvanced Functional Materials, EarlyView.
Silicone‐based viscoelastic substrates with tunable stress relaxation reveal how matrix mechanics regulates cellular mechanosensing and cell‐mediated matrix remodelling in the stiff regime. High stress relaxation promotes assembly of fibronectin fibril‐like structures, increased nuclear localization of YAP and formation of β1 integrin‐enriched ...
Jonah L. Voigt   +2 more
wiley   +1 more source

Voltammetric and impedance studies of phenols and Its derivatives at carbon nanotubes/Prussian bluefilms platinum modified electrode [PDF]

open access: yes, 2012
The electrochemical oxidation of phenol (Ph), 4-chlorophenol (4-ClPh) and 4-nitrophenol (4-NPh) at a platinum electrode modified with and without multi-walled carbon nanotubes/Prussian blue nanocomposite in a pH 7.0 phosphate buffer electrolyte was ...
Adekunle, Abolanle S.   +4 more
core  

Shapes of Differential Pulse Voltammograms and Level of Metallothionein at Different Animal Species [PDF]

open access: yes, 2007
Metallothioneins play a key role in maintaining homeostasis of essential metals and in protecting of cells against metal toxicity as well as oxidative damaging.
Jaromir Hubalek   +5 more
core   +3 more sources

Electroactive Metal–Organic Frameworks for Electrocatalysis

open access: yesAdvanced Functional Materials, EarlyView.
Electrocatalysis is crucial in sustainable energy conversion as it enables efficient chemical transformations. The review discusses how metal–organic frameworks can revolutionize this field by offering tailorable structures and active site tunability, enabling efficient and selective electrocatalytic processes.
Irena Senkovska   +7 more
wiley   +1 more source

Electrochemically reduced graphene oxide pencil-graphite in situ plated bismuth-film electrode for the determination of trace metals by anodic stripping voltammetry [PDF]

open access: yes, 2014
An electrochemical platform was developed based on a pencil-graphite electrode (PGE) modified with electrochemically reduced graphene oxide (ERGO) sheets and in conjunction with an in situ plated bismuth-film (ERGO-PG-BiE).
Baker, Priscilla   +5 more
core   +1 more source

3D‐Printed Sulfur‐Derived Polymers With Controlled Architectures for Lithium‐Sulfur Batteries

open access: yesAdvanced Functional Materials, EarlyView.
Rheology‐guided formulation design for direct ink writing enables the fabrication of 3D sulfur copolymer cathodes with controlled architectures for lithium‐sulfur batteries. The printed electrodes exhibit multiscale porosity and high sulfur utilization, delivering enhanced electrochemical performance compared to conventional cast electrodes.
Bin Ling   +7 more
wiley   +1 more source

Spectrofluorimetric determination of sildenafil: a new analytical alternative for its analysis [PDF]

open access: yes, 2012
In aqueous solutions, sildenafil presents a very low fluorescence emission and a limited linear range. In presence of a cationic surfactant hexadecyltrim ethylammonium bromide (HTAB, method A) and anionic surfactant sodium dodecyl sulfate (SDS, method B)
Fernandez, Liliana Patricia   +1 more
core  

Determination of rare earth elements in natural water samples – A review of sample separation, preconcentration and direct methodologies [PDF]

open access: yes, 2016
publisher: Elsevier articletitle: Determination of rare earth elements in natural water samples – A review of sample separation, preconcentration and direct methodologies journaltitle: Analytica Chimica Acta articlelink: http://dx.doi.org/10.1016/j.aca ...
Fisher, A, Kara, D
core   +2 more sources

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