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EQUAL AMOUNTS. “Two of these three models, Dirac–Milne Cosmology (that incorporates CPT violation) and the Lattice Universe (based on CPT symmetry), assume a symmetric Universe composed of equal amounts of matter and antimatter, with antimatter somehow “hidden” in cosmic voids; this hypothesis produced encouraging preliminary results.” (CPT = Charge, parity, and time reversal symmetry). https://lnkd.in/dHEhKX8Z View in LinkedIn

The Green Fuse (Dylan Thomas) — part of an abstract sculpture on the theme. View in LinkedIn

UNSOLVED QUARK MATTER. “The problem is that the complete QCD equations describing all the quarks in a nucleus are too difficult to solve. Modern supercomputers are about 100 years away from being fast enough for the task. And even if supercomputers were fast enough today, the equations haven't advanced to the point where you could plug them into a computer.” (QCD = quantum chromodynamics, rules governing the behavior of quarks). https://lnkd.in/d77B2d8s View in LinkedIn

LITMUS TEST WITH LIGHT. “The prediction that light emitted by antimatter is repelled by the matter gravitational field. This prediction is an invertible consequence of the main feature of the studies reviewed here, namely, the classical conjugation from neutral matter to neutral antimatter that evidently also applied to light. The prediction can mainly be used to ascertain whether a faraway galaxy is made up of matter or antimatter.” https://lnkd.in/drUkrKWz View in LinkedIn

NEWTONIAN. “Antimatter asteroids must be treated classically since they are large and isolated in space.” https://lnkd.in/drUkrKWz View in LinkedIn

BESPOKE APPLICATIONS. “These limitations prevent their reuse and rapid incorporation into larger biological systems to achieve more complex logic functions.” https://lnkd.in/dsEUY4ZP View in LinkedIn

MODULAR GOAL. “However, most of these gene circuits are not modular (that is, they are limited by having to use specific inputs and outputs) or are not insulated from their host chassis (that is, they are limited by having to operate in a specific genetic background to avoid potential cross-talk or at the cost of affecting the host genetic machinery).” https://lnkd.in/dsEUY4ZP View in LinkedIn

EXPANDING REPERTOIRE. “To date, a number of synthetic gene circuits have been constructed to perform various digital logic functions and have demonstrated the great potential of using biological computational circuits to customize cell signalling.” https://lnkd.in/dsEUY4ZP View in LinkedIn

FRAGMENT FROM NATURE continues from last weekend and ends this weekend on the use of the biological equivalent of logic gates in electronics. Since nature was not built from scratch, but by often clunky bolt-on random hybridizations, its control systems can look byzantine at best, and at other times inspired inventions, often side by side. Overprinting that biochemical and genetic tangle with a logical system is, to say the least, not without its challenges. https://www.nature.com/articles/ncomms1516 View in LinkedIn

FLEXIBILITY. “Having a similar role as their electronic counterparts, the engineered AND and NAND gates are the fundamental components in designing biologically based digital systems to control cell signalling and can be easily applied in different contexts, owing to their modularity and orthogonality, to implement human-designed intra- and extra-cellular control functions.” https://lnkd.in/dsEUY4ZP View in LinkedIn