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Laser probing of integrated circuits using sub-bandgap photon energies remains a challenge. Here, the authors propose a super-resolution method capable of achieving probe placement accuracy to better than 10 nm; extraction of electro-optic waveforms from a node of a group of transistors and applied this to isolate and identify a fault on a defective device.
Mitophagy activation is mediated by mitochondrial depolarization. Here, the authors show that mitochondrial protein misfolding can activate mitophagy in a depolarization-independent manner mediated by a protein import reduction.
Nonenzymatic reactions play an important part in the formation of some natural products possessing complex skeletons. Here, the authors report the discovery of eight chimeric medermycin-type natural products and their nonenzymatic construction.
How lake temperatures are responding to widespread changes in lake ice remains unclear. Here the authors show the excess lake warming during the ice-off and ice-on month due to earlier ice loss and later ice formation across the Northern Hemisphere.
A decadal-scale field trial revealed 1.01 Mg of rhizodeposit and necromass C was stored in soil microaggregate and mineral fractions per Mg biochar-C applied. Microspectroscopic analyses visualize mechanisms for this elevated soil C storage ceiling.
Existing approaches to modulating the properties of 2D materials typically involve heterostructuring or exposure to external fields. Here, the authors propose a gate-free non-contact approach to tuning the properties of a 2D semiconductor via the image interaction due to proximity to a neutral patterned structure.
Phase transition points can be used to reduce the ionic migration activation energy. Here, the authors find a lowered activation energy associated with oxygen transport at a compositional phase transition point in Ca-doped bismuth ferrite films.
At a time when protecting the environment is urgent, dealing with inherent uncertainties in the responses of biodiversity to disturbances is essential. This study promotes a promising tool to assess the vulnerability of species assemblages to guide protection efforts even if species response and disturbance regimes are poorly documented.
The characterisation of T cells during aging is important to predict functional outcomes in vaccination or infection. Here the authors use flow cytometry and scRNA sequencing to transcriptionally age CD8 T cells and then use a machine learning model to interpret cell age from transcriptional profiles.
Here the authors present a large-scale resource of the early-life human gut microbiome from children under three years old, which comprises 32,277 metagenome-assembled gut genomes, representing 2172 species, and more than 80 million gut proteins representing >4 million protein clusters, spanning multiple clinical factors including age, delivery mode, gestational age, and feeding patterns.
Determining the time evolution of reactions at the quantum mechanical level improves our understanding of molecular dynamics. Here, authors separate the breakup of water, one bond at a time, from other processes leading to the same final products and experimentally identify, separate, and follow step by step two breakup paths of the transient OD+ fragment.
Van der Waals heterostructures allow for the integration of several materials with different properties in the one heterostructure. Here, Li et al combine a quantum spin hall insulator, WTe2, with an insulating ferromagnet, Cr2Ge2Te6, in a van der Waals heterostructure, with resulting proximity-induced magnetism in the WTe2 layer leading to an anomalous Hall and Nernst effect.
Global patterns of regional plant diversity are relatively well known, but whether they hold for local communities is debated. This study created multi-grain global maps of alpha diversity for vascular plants to provide a nuanced understanding of plant diversity hotspots and improve predictions of global change effects on biodiversity.
Directionality of auxin transport is determined by polar localization of PIN-FORMED (PIN) proteins. Here the authors show that Arabidopsis WAV3 E3 ubiquitin ligases contribute to PIN polarity by selectively antagonizing ectopic deposition of de novo synthesized PIN proteins following cell division.
Photopolymerization provides a safe and mild fabrication pathway towards polymeric particles but the implementation of photochemistry from solution to dispersed media to produce particles is far from trivial. Here, the authors demonstrate an additive-free step-growth photopolymerization with sunlight, exploiting the photoinduced Diels-Alder to fabricate micrometer sized polymeric particles.
Cold-atom interferometers have been miniaturized towards fieldable quantum inertial sensing applications. Here the authors demonstrate a compact cold-atom interferometer using microfabricated gratings and discuss the possible use of photonic integrated circuits for laser systems.
Although ginkgo terpenoids have been studied extensively for their pharmaceutical properties, knowledge on their biosynthesis remains limited. Here, the authors identify five multifunctional cytochrome P450s that catalyze the generation of the tert-butyl group and one of the lactone rings towards the biosynthesis of ginkgolides.
Can AI learn from atmospheric data and improve weather forecasting? The neural network MetNet-2 achieves this by forecasting the fast changing variable of precipitation up to 12 h ahead more accurately and efficiently than traditional models based on hand-coded physics.