منابع مشابه
PERIODIC SOLUTIONS OF CERTAIN THREE DIMENSIONAL AUTONOMOUS SYSTEMS
There has been extensive work on the existence of periodic solutions for nonlinear second order autonomous differantial equations, but little work regarding the third order problems. The popular Poincare-Bendixon theorem applies well to the former but not the latter (see [2] and [3]). We give a necessary condition for the existence of periodic solutions for the third order autonomous system...
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There are two main methods for preparing the PuraMatrix (PM) as a three-dimensional (3-D) scaffold for supporting the cells including surface plating and encapsulation. In the surface-plating procedure, the scaffold is created by adding an ionic agent such as medium to PM. After adjusting the PH by changing the medium, cells are seeded on top of the scaffold. In the encapsulation method, PM and...
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We describe the characterization of a chip-based platform (3(D)-KITChip) for the three-dimensional cultivation of cells under perfusion conditions via magnetic resonance imaging (MRI). Besides the chip, the microfluidic system is comprised of a bioreactor housing, a medium supply, a pump for generating active flow conditions as well as a gas mixing station. The closed circulation loop is ideall...
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A mathematical model for cell movement in multicellular systems has been developed that allows us to simulate and visualize, in three dimensions, individual cell movements in a number of multicellular systems. These include cell movement during aggregation and slug stage of Dictyostelium discoideum, embryogenesis, limb formation and wound healing. The model is quite adaptable to a number of sys...
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Bioreactors allowing direct perfusion of culture medium through tissueengineered constructs may overcome diffusion limitations associated with static culturing, and may provide flow-mediated mechanical stimuli. The hydrodynamic stress imposed on cells in these systems will depend not only on the culture medium flow rate but also on the scaffold three-dimensional (3D) micro-architecture. We perf...
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ژورنال
عنوان ژورنال: Biopolymers and Cell
سال: 2020
ISSN: 0233-7657,1993-6842
DOI: 10.7124/bc.000a29