Micro magnetofluidics: droplet manipulation of double emulsions based on paramagnetic ionic liquids.

The ability to control and manipulate discrete fluid droplets by magnetic fields offers new opportunities in microfluidics. A surfactant-free and easy to realize technique for the continuous generation of double emulsion droplets, composed of an organic solvent and a paramagnetic ionic liquid, is applied. The inner phase of the emulsion droplet consists of imidazolium-based ionic liquids with either iron, manganese, nickel or dysprosium containing anions which provide paramagnetic behaviour.

Low temperature catalytic combustion of propane over Pt-based catalyst with inverse opal microstructure in a microchannel reactor.

A novel Pt-based catalyst with highly regular, periodic inverse opal microstructure was fabricated in a microchannel reactor, and catalytic testing revealed excellent conversion and stable activity for propane combustion at low temperatures.

Ca2+ sensitization of myocardial force and actomyosin ATPase by (D-Ala2, Met5) enkephalinamide.

The presence of proenkephalin mRNA and proenkephalin peptides in cardiac muscle cells suggests the local production of enkephalins in the myocardium. Yet, the effects of these peptides on the function of the contractile proteins are unknown. The effects of (D-Ala2, Met5) enkephalinamide (DALA) on the activity of the actin stimulated Ca, Mg-myosin ATPase in myofibrils and on the contractility and the activity of the related actomyosin ATPase of chemically skinned muscle fibres from pig myocardium were studied.

Spin trapping evidence for radical generation by isolated hearts and cultured heart cells.

The spin trap 5,5-dimethyl-1-pyrroline-1-oxide (DMPO) has been applied to monitor the generation of free oxy-radicals in samples derived from isolated hearts and heart cells. .OH was trapped in the effluent of isolated hearts in the early phase of reperfusion following an ischemia time of only 10 min.

[Cumulative functional rates of orthoptic dialysis fistulas and interposition grafts].

The function of 221 dialysis shunts was investigated retrospectively in 111 patients of an outpatient haemodialysis centre. The mean age of the patients was 58 years. Of 221 recorded shunts, 171 were direct arteriovenous fistulas, while 50 were interposition grafts.