Compression Device for 3D Spheroids in Microgravity

ME450 Capstone Design and Manufacturing Experience: Winter 2021As space travel and space colonization become increasingly feasible, there is recent interest in the physiological impacts of changes in cellular systems induced by micro gravity. The Liu group is in collaboration with the Center for Advancement of Science in Space (CASIS) to examine cellular mechanotransduction of human osteoblasts on the International Space Station. Part of this project aims to develop a device that can apply a compressive load in microgravity to 3D spheroids (aggregates of cells) embedded in hydrogel. This project aims to design a compressive device compatible with microgravity condition that would provide pre-defined strains to the 3D spheroids.Grace Cai, Allen Liu: Liu Lab, Space Tangohttp://deepblue.lib.umich.edu/bitstream/2027.42/167656/1/Team_14-Compression_Device_for_3D_Spheroids_in_Microgravity.pd

Developments in the negative-U modelling of the cuprate HTSC systems

The paper deals with the many stands that go into creating the unique and complex nature of the HTSC cuprates above Tc as below. Like its predecessors it treats charge, not spin or lattice, as prime mover, but thus taken in the context of the chemical bonding relevant to these copper oxides. The crucial shell filling, negative-U, double-loading fluctuations possible there require accessing at high valent local environment as prevails within the mixed valent, inhomogeneous two sub-system circumstance of the HTSC materials. Close attention is paid to the recent results from Corson, Demsar, Li, Johnson, Norman, Varma, Gyorffy and colleagues.Comment: 44 pages:200+ references. Submitted to J.Phys.:Condensed Matter, Sept 7 200