A flower may seem like a perfect meal to a bee, but its pollen may still lack the nutrients a bee needs.
Category: futurism – Page 40
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.
Activation mechanism and structural assembly of the Mycobacterium tuberculosis ClpP1P2 protease and its associated ATPases
Weinhäupl et al. determine the cryo-EM structure of the ClpC1P1P2 complex from Mycobacterium tuberculosis, revealing an asymmetric architecture and selective activator binding. They show that molecular crowding promotes assembly and activation of Clp complexes, suggesting a mechanism for ClpP1P2 activation under physiological conditions.