State educational spending policies strongly impact the funding of local schools. While some US states have removed school spending authority from local residents, others continue to encourage local control. In this paper we explore the effects of changes in state educational spending policies on Tiebout sorting by examining the location choice of young and elderly households, both within and a...

The isolation and sorting of cells has become an increasingly important step in chemical and biological analyses. As a unit operation in more complex analyses, isolating a phenotypically pure cell population from a heterogeneous sample presents unique challenges. Microfluidic systems are ideal platforms for performing cell separations, enabling integration with other techniques and enhancing tr...

This paper reports a new continuous-flow and label-free sorting scheme based on biocompatible ferrofluid hydrodynamics (ferrohydrodynamics) for the separation of mammalian cells (HeLa cells and mouse whole blood). Ferrofluids are stable magnetic nanoparticles suspensions used as sorting media in microfluidics for both particles and cells. Here we develop a biocompatible ferrofluid that can sust...

Systems biology along with what is now classified as cytomics provides an excellent opportunity for cytometry to become integrated into studies where identification of functional proteins in complex cellular mixtures is desired. The combination of cell sorting with rapid protein-profiling platforms offers an automated and rapid technique for greater clarity, accuracy, and efficiency in identifi...

cell sorting technology plays an important role in detailed analysis of these cells as reticulocytes account for about 1% of all erythrocytes. Electron microscopy is the only means available for direct observation of the ultramicrostructure 2 of cells and tissues. However, specific pretreatment of samples is needed for some analyses (localisation 3 of cell protein, etc.) using an electron micro...

We present here a microfluidic approach to achieve length-dependent sorting of rod-like particles/cells. We have previously developed a technique for continuous and size-dependent separation of particles, named “hydrodynamic filtration (HDF)” [1], and applied it to the shape-based particle sorting [2]. To enhance the effect of either the particle length or width, microchannels having tilted bra...

Separations represent a fundamental unit operation in biology and biotechnology. Commensurate with their importance is the diversity of methods that have been developed for performing them. One important class of separations are equilibrium gradient methods, wherein a medium with some type of spatial nonuniformity is combined with a force field to focus particles to equilibrium positions relate...

Separation of plastic from various types of waste streams represents one of major problematic process in energy recovery through different thermochemical processes. The sorting of plastics is a very essential step in different waste management technique. Manual sorting is suitable when plastic component are present in large amount but it is a labor intensive process. In automated sorting techni...

The ability to rapidly and accurately sort multiple types of biological targets-such as molecules, viruses, bacteria or mammalian cells-from complex sample mixtures is an essential component for a wide range of diagnostic and therapeutic strategies. However, most current selection methods for cell separation are either limited with regard to throughput, as is the case for Fluorescence Assisted ...