Publications by authors named "A Shapira"
Article Synopsis
- Researchers study a 2D lattice gas that demonstrates a phase transition related to activity and absorption, characterized by a critical density (ρ_{c}).
- They derive a hydrodynamic equation that helps understand how large-scale behavior near the critical point depends on just two main critical exponents.
- The study reveals that as the density surpasses the critical level, different length scales emerge, differing from behavior observed when the density is below critical levels, with numerical simulations affirming these findings.
Article Synopsis
- Marmoset monkeys can vocally label each other using spontaneous "phee-calls," suggesting they possess a form of vocal communication similar to that of humans, dolphins, and elephants.
- When calls are directed specifically at them, marmosets respond more correctly, indicating a sophisticated understanding of social cues in their communication.
- The study's findings highlight the complexity of vocalizations among nonhuman primates and suggest that marmoset calls could help researchers understand the evolution of social communication and aspects of human language.
Overcoming the oxygen diffusion limit of approximately 200 µm remains one of the most significant and intractable challenges to be overcome in tissue engineering. The fabrication of hydrogel microtissues and their assembly into larger structures may provide a solution, though these constructs are not without their own drawbacks; namely, these hydrogels are rapidly degraded in vivo, and cells delivered via microtissues are quickly expelled from the area of action. Here, we report the development of an easily customized protocol for creating a protective, biocompatible hydrogel barrier around microtissues.
View Article and Find Full Text PDFTissue engineering is considered a promising approach to treating advanced degenerative maculopathies such as nonexudative age-related macular degeneration (AMD), the leading cause of blindness worldwide. The retina consists of several hierarchical tissue layers, each of which is supported by a layer underneath. Each of these layers has a different morphology and requires distinct conditions for proper assembly.
View Article and Find Full Text PDFThe survival and function of tissues depend on appropriate vascularization. Blood vessels of the tissues supply oxygen, and nutrients and remove waste and byproducts. Incorporating blood vessels into engineered tissues is essential for overcoming diffusion limitations, improving tissue function, and thus facilitating the fabrication of thick tissues.
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