The magnetoresistance Rxx was investigated in arrays of abutted square cavities with lengths L ranging from 500 nm to 1.2 mm near filling factor n ­ 1y2. Maxima in Rxx occur for effective magnetic field values satisfying the magnetic focusing condition between the cavity spacing and the cyclotron radius of composite fermions, also for the effective magnetic field direction when composite fermio...

Virulence of several species of enteropathogenic bacteria has been correlated with the ability of isolates to take up the dye Congo red. To determine whether Congo red uptake might be a useful marker for virulence of motile Aeromonas species, we examined 50 strains of diverse clinical origin on a medium containing 50 micrograms of Congo red per ml. All of the strains took up the dye to various ...

A modest in-plane magnetic field Bk is sufficient to destroy the fractional quantized Hall states at 1⁄4 5=2 and 7=2 and replace them with anisotropic compressible phases. Remarkably, we find that at larger Bk these anisotropic phases can themselves be replaced by isotropic compressible phases reminiscent of the composite fermion fluid at 1⁄4 1=2. We present strong evidence that this transition...

The increasing interest in epidermal patches for wearable monitoring makes it urgent to move toward “greener” and recyclable materials printed electronics. However, combining scalable fabrication, stretchable function, material architecture is challenging achieve. Here, this article introduces a printable biphasic liquid metal (LM)-based composite that combines excellent electrical conductivity...

the applicability of fe3o4 nanoparticles (fe3o4nps) for removing alizarin and purpurin from aqueous solutions has been reported. the influence of nanoparticle dosage, ph of the sample solution, individual dye concentration, contact time between the sample and the adsorbent, temperature, and ionic strength of the sample solution were studied by performing a batch adsorption technique. the maximu...

Azoreductases reduce the azo bond (N=N) in azo dyes to produce colorless amine products. Crude cell extracts from Enterococcus faecalis have been shown to utilize both NADH and NADPH as electron donors for azo dye reduction. An azoreductase was purified from E. faecalis by hydrophobic, anion exchange and affinity chromatography. The azoreductase activity of the purified preparation was tested o...