A systematic study of the effects of cell geometry on the dynamics of large-scale flows in turbulent thermal convection is carried out in horizontal cylindrical cells of different lengths filled with water. Four different flow modes are identified with increasing aspect ratio Γ . For small aspect ratios (Γ 6 0.16), the flow is highly confined in a thin disc-like cell with a quasi-two-dimensiona...

We demonstrate the use of a microfluidic stagnation point flow to trap and extend single molecules of double-stranded (ds) genomic DNA for detection of target sequences along the DNA backbone. Mutant EcoRI-based fluorescent markers are bound sequence-specifically to fluorescently labeled ds lambda-DNA. The marker-DNA complexes are introduced into a microfluidic cross slot consisting of flow cha...

Flow resistance in open channels determines the average flow velocity a river, with important implications for downstream and at-a-station hydraulic geometry sediment transport natural channels. However, steep mountain is challenging to understand predict due heterogeneous channel morphology spatially variable flow. Using double-averaging approach appropriate very rough channels, width, reach, ...

Ten patients with asthma were treated with different doses of oral corticosteroids during three separate exacerbations. Prednisolone was given in doses of 0.2, 0.4, and 0.6 mg/kg body weight daily for two weeks in a double blind randomised order (equivalent to 14, 28, and 42 mg of prednisolone daily in a person weighing 70 kg). Patients developing an exacerbation recorded peak expiratory flow r...

Multi-channel wireless networks are being studied as a means to increase wireless network capacity. The implicit assumption is that network throughput increases in direct proportion with the number of non-overlapping channels used. But there have been very few studies which have experimentally verified this premise. In this paper we characterize the performance of multi-channel wireless network...

Noncontact retinal blood flow measurements are performed with a Fourier domain optical coherence tomography (OCT) system using a circumpapillary double circular scan (CDCS) that scans around the optic nerve head at 3.40 mm and 3.75 mm diameters. The double concentric circles are performed 6 times consecutively over 2 sec. The CDCS scan is saved with Doppler shift information from which flow can...

Double criticality and its nonlinear implications are considered for stratified N−layer shallow water flows with N = 1, 2, 3. Double criticality arises when the linearization of the steady problem about a uniform flow has a double zero eigenvalue. We find that there are two types of double criticality: non-semisimple (one eigenvector, and one generalized eigenvector), and semi-simple (two indep...

The flow environment in inner cores of water-in-oil-in-water (w/o/w) microfluidic double emulsions has a significant impact on industrial applications of such systems. For example, in the case of shear sensitive cells compartmentalised in the cores, high shear conditions may be deleterious. This study reports on the flow characteristics of w/o/w inner cores in comparison to those in single wate...

Numerical study of double-diffusive natural convective heat transfer in a curved cavity filledwith a porous medium has been carried out in the current study. Polar system has beenselected as coordinate system. As a result, all equations have been discredited in r and θdirections. Brinkmann extended Darcy model has been utilized to express fluid flow inporous matrix in the enclosure. Smaller and...