A comparative numerical evaluation of linear anode arrangements for enhancing above ground storage tank cathodic protection via mesh grid and concentric ring designs.

Cathodic protection as a complementary method is one of the most effective ways to prevent corrosion, along with coating and choosing the suitable material. There are different ways to protect the storage tank bottom. Due to the presence of the geo membrane layer and its effective and pivotal role, the use of mixed metal oxide (MMO) anodes is highly recommended.

Assessing the aneurysm occlusion efficacy of a shear-thinning biomaterial in a 3D-printed model.

Metallic coil embolization is a common method for the endovascular treatment of visceral artery aneurysms (VAA) and visceral artery pseudoaneurysms (VAPA); however, this treatment is suboptimal due to the high cost of coils, incomplete volume occlusion, poor reendothelialization, aneurysm puncture, and coil migration. Several alternative treatment strategies are available, including stent flow diverters, glue embolics, gelfoam slurries, and vascular mesh plugs-each of which have their own disadvantages. Here, we investigated the in vitro capability of a shear-thinning biomaterial (STB), a nanocomposite hydrogel composed of gelatin and silicate nanoplatelets, for the minimally-invasive occlusion of simple necked aneurysm models.

Ionic current magnetic fields in 3D finite-length nanopores and nanoslits.

Deoxyribonucleic acid (DNA) encodes all genetic information, and in genetic disorders, DNA sequencing is used as an effective diagnosis. Nanopore/slit is one of the recent and successful tools for DNA sequencing. Passage of DNA along the pores creates non-uniform ionic currents which creates non-uniform electric and magnetic fields, accordingly.

Three-dimensional modeling of in-ground cathodic protection systems with deforming anodes.

The design of sacrificial cathodic protection (CP) systems conventionally involves steady-state assumptions, which means design parameters are considered constant during the in-service life of CP systems. In contrast, it is evident by experimental observations (including field measurements) that cathodic protection is a transient process due to variations in electrolyte properties such as seasonal changes in electrical conductivity of soil, depletion of anodes, and formation of corrosion deposits on anode material surface, to name a few. The lack of practical time-dependent models on this critical issue is apparent in the literature; accordingly, in this study, a pseudo transient electrochemical model is adopted to highlight the transient behavior of cathodic protection systems and investigate key differences with steady-state behavior.

Publisher Correction: Maximizing Electrokinetic Energy Conversion via the Intersecting Asymptotes Method.

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Maximizing Electrokinetic Energy Conversion via the Intersecting Asymptotes Method.

It has been shown in earlier studies that the maximum electrokinetic conversion efficiency between flow and electric work (e.g., electrokinetic power generation) occurs when electric double-layer (λ) overlaps and there is no electroneutral zone in a nanometer-scale channel.

Streaming current magnetic fields in a charged nanopore.

Magnetic fields induced by currents created in pressure driven flows inside a solid-state charged nanopore were modeled by numerically solving a system of steady state continuum partial differential equations, i.e., Poisson, Nernst-Planck, Ampere and Navier-Stokes equations (PNPANS).

High-power electrokinetic energy conversion in a glass microchannel array.

The electrokinetic conversion of flow work to electricity using a glass microchannel array coated with nano-layers of gold that serve as electrodes on both its ends was studied and a maximum power output of 1 mW at an efficiency of 1.3% is reported. The establishment of such a high power generation capability in combination with a low pressure drop (26 kPa) makes this electrokinetic work conversion device more practical than those previously reported in literature.

Temperature gradient focusing in miniaturized free-flow electrophoresis devices.

Temperature gradient focusing is a method to separate and focus any charged analytes even without accessible isoelectric point, and has been already widely used in CE. In this paper, we demonstrate the application of temperature gradient focusing to free-flow electrophoresis. Besides focusing and separation experiments of proteins, the stability of the temperature gradient under flow conditions and the temperature dependence of fluorescence dyes have also been investigated.