A technique is proposed to enhance microfluidic immuno-sensors, for example, immunoassays, in which a ligand immobilized on a microchannel wall specifically binds analyte flowing through the channel. These sensors can be limited in both response time and sensitivity by the diffusion of analyte to the sensing surface. In certain applications, the sensitivity and response of these heterogeneous i...

Abstract The paper describes the technique and results of experiments on introduction SiC BN nanoparticles into an aluminum melt contained in a cylindrical crucible with water-cooled bottom heated walls. was placed MHD stirrer, which generated travelling rotating magnetic fields ensuring such way bidirectional stirring liquid metal crucible. After introducing reinforcing particles, stirred dire...

[1] Global variations of stirring in the surface ocean are quantified using finite-time Lyapunov exponents (FTLEs) calculated from currents derived from satellite altimetry. It is shown that the stirring is highly non-uniform, and the probability distribution functions (PDFs) of the FTLEs are broad, asymmetric, and have long high-stretch tails. The characteristics of the PDFs vary with mesoscal...

BACKGROUND Microbioreactors have emerged as novel tools for early bioprocess development. Mixing lies at the heart of bioreactor operation (at all scales). The successful implementation of micro-stirring methods is thus central to the further advancement of microbioreactor technology. The aim of this study was to develop a micro-stirring method that aids robust microbioreactor operation and fac...

Scale-up of oxygenase catalyzed reactions is often challenging due to the limited oxygen mass transfer in aqueous solutions. To overcome such limitation, we studied different scale-up conditions using recombinant resting cells E. coli JM109(DE3), harboring cumene dioxygenase Pseudomonas fluorescens IP01, for dihydroxylation naphthalene (1R,2S)-cis-1,2-dihydro-1,2-naphthalenediol. Thereby, vigor...

Plunge depth is one of the most important process parameters that affect joint strength in refill friction stir spot welding (refill FSSW). In this study, a three-dimensional numerical model developed using Lagrangian incremental formulation DEFORM-3D to simulate FSSW thin AA7075-T6 sheets. The verified by comparing obtained temperatures at specific locations with from previous experimental stu...

Adding high carbon ferromanganese in the early decarburization stage of 200 series stainless steel can reduce electrolytic manganese added during alloying; however, oxidation loss is severe. This paper studies CO2 and O2 mixed blowing thermodynamics kinetics on retention steel. The thermodynamic study indicates that reduces when used instead part molten decarburization. Meanwhile, kinetic deter...

UNLABELLED BACKGROUND This study aims to investigate the influence of different stirring times on antibacterial activity of silver nanoparticles in polyethylene glycol (PEG) suspension. The silver nanoparticles (Ag-NPs) were prepared by green synthesis method using green agents, polyethylene glycol (PEG) under moderate temperature at different stirring times. Silver nitrate (AgNO3) was taken...

1,3-Propanediol (1,3-PD) production is favored by high amount of glycerol which also contributes to the lethal 3-hydroxypropionaldehyde (3PA) accumulation. The influences of three culture conditions including initial glycerol concentration, stirring rate, and oxidoreduction potential ORP) regulation on 3-HPA accumulation and 1,3-PD production were investigated. 3-HPA detoxification was availabl...