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Self-adaptive catch-up injection of positrons in plasma wakefield acceleration

Efficient positron injection in plasma wakefield acceleration is challenging because it requires a field structure that can both focus and accelerate positrons. Here, we propose a self-adaptive catch-up injection scheme, in which a positron source placed in front of a hollow, positively charged driver is naturally captured as the wake catches up. Analytical modeling and 3D PIC simulations show that positrons with broad initial conditions can be injected into similar accelerating phases and further accelerated to multi-GeV energies. These results provide a proof-of-principle demonstration for a new positron injection and acceleration scheme in plasma wakefields.

Scientists Studying Earth’s Flowering Plants Issue a Stark Warning to Humanity

From the beloved vanilla orchid, whose pods flavor many of our favorite desserts, to the nose-twisting corpse flower, whose gigantic flower draws crowds with every fetid bloom, even the world’s most treasured flowering plants are in grave danger.

And scientists are only just coming to terms with just how much we stand to lose.

In a recent paper published in Science, an international team of biologists warns that we risk losing more than a fifth of the evolutionary history of flowering plants, as a result of ever-increasing human pressures.

MIT’s 1000TB/s Photonic Chip Finally Puts an End to NVIDIA’s AI Domination!

MIT engineers are building a chip reaching one petabit per second. See how this hardware processes data faster than any current consumer tech. This video examines the technical details behind the new MIT processor chip designed to push data limits. We explore how researchers are utilizing interferometer technology to achieve speeds of a thousand terabits on a surface thinner than a human hair. This breakdown is for engineers, students, and tech enthusiasts interested in the future of high-speed hardware. By analyzing the electronic components and the specific measurement diagrams, you will better understand the engineering hurdles involved in reaching a petabit per second. You will see how this data processing speed milestone compares to existing silicon-based architectures and why this specific design is capable of such massive throughput.

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Natural killer cells swarm and crossrecruit cytotoxic T cells via CCR5

Cremasco et al. demonstrate that NK cells engaging solid tumor targets can swarm via CCR5 and directly cross-recruit cytotoxic T cells through the same receptor. Using multi-step adoptive transfer protocols in vivo, a primary NK cell infusion enhances subsequent T cell tumor infiltration and improves tumor rejection.

‘RNA can do things which we have never seen before’: New study challenges assumptions about what RNA was up to at the dawn of life

RNA can fold into more complex configurations than scientists thought, raising questions about how important these 3D structures were when life on Earth began.

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