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...

Over the last two decades, a range of minimal invasive surgery (MIS) techniques have been presented to reduce patient recovery time and risks of infection during the surgery. In MIS, incisions are significantly small, as opposed to conventional surgery [1]. The operating range of the needle insertion is limited by the reachability of the needle tip within the human body due to the presence of o...

Experimental details Preparation of Fe3O4 micro-spheres The mono-dispersed Fe3O4 micro-spheres were synthesized by a one-pot hydrothermal method. In a typical synthesis, FeCl3.6H2O (0.54 g), sodium citrate (1.2 g), and urea (0.2 g) were dissolved in distilled water (40 mL). Then, PAAS (0.2 g) was added under continuous stirring until it was totally dissolved. The solution was transferred to a 5...

In this research, a highly sensitive, selective, rapid and simple micro-funnel magnetic stirringassisted liquid–liquid microextraction (MF-MSA-LLME) method combined with flame atomic absorption spectrometry (FAAS) was introduced for the preconcentration, extraction, and measurement of trace amounts of silver ion. In this method 1-(2–Pyridylazo)-2-naphthol (PAN) and 1-octanol were used as chelat...

A simple manual micro-titration method is proposed for the potentiometric and conductometric titration of 200 to 800 µL liquid samples. The sample be titrated dispensed into chamber; bottom section a plastic test tube that glued center small stirring magnet. After inserting sensing probe tip titrant delivery chamber, chamber-stirring magnet assembly spun at low speed using conventional magnetic...

It is well established that the bulk etch rates for solid state nuclear track detectors are a ected by the concentration and the temperature of the etchant. Recently, we found that the bulk etch rate for the LR 115 detector to be a ected by stirring during etching. In the present work, the e ects of stirring on the bulk etch rate of the CR-39 detector is investigated. One set of sample was etch...

Three experiments were conducted to find out the feeding type and age structure of nematodes in different soil habitats; to know the efficiency of different extraction techniques of nematodes and to observe the hatching behavior of Meloidogyne juvenile in a Baermann device. Bacterivore, Omnivore, Predator, Fungivore and Plant Parasitic nematodes were recorded in the soil of flower, vegetable, m...

In this study, electrochemical deposition of Ni-SiC-Gr nano composites was studied. The Watts bath was used for electrodeposition. The SiC and graphite powders were suspended in the electrolyte and stirred. The effects of changes in bath stirring rate on the composite coating were investigated. The X-Ray diffraction (XRD), scanning electron microscopy (SEM) and field emission scanning electron ...

Context. Spectroscopic observations and theoretical models suggest resonant wave-particle interactions, involving high-frequency ion-cyclotron waves, as the principal mechanism for heating and accelerating ions in the open coronal holes. However, the mechanism responsible for the generation of the ion-cyclotron waves remains unclear. One possible scenario is that ion beams originating from smal...