Poisoning effect of ammonia on the performance and transport process of proton exchange membrane fuel cells

Posted by klaurent Caltech

Kavli Affiliate: Wei Gao| Summary:Ammonia is a high-density hydrogen energy carrier and can be decomposed to produce hydrogen for use in fuel cells. However, a significant challenge in ammonia-decomposition-based fuel cell applications is the unavoidable presence of trace ammonia impurity, which can poison the fuel cell, but the poisoning mechanism remains unclear. To address this, […]


Continue.. Poisoning effect of ammonia on the performance and transport process of proton exchange membrane fuel cells

Elliptical Regularized Hotelling Testing for High Dimensional Data

Posted by klaurent Peking

Kavli Affiliate: Feng Long| Summary: We consider one-sample testing of a high-dimensional location parameter under elliptically symmetric distributions with heavy tails and pervasive cross-sectional dependence. We propose an elliptical regularized Hotelling test with Cauchy combination (ERHT–CC), based on the sample spatial median and the spatial-sign covariance matrix centered at that median. We derive its null […]


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Broadband multiwavelength properties of the archetypal blazar 3C 279 during the 2017 Event Horizon Telescope campaign

Posted by klaurent Peking

Kavli Affiliate: Luis Ho | Summary:The archetypal blazar 3C 279 hosts a prominent relativistic jet and exhibits strong broadband variability across the electromagnetic spectrum. In April 2017, the Event Horizon Telescope (EHT) observed 3C 279, alongside one of the most extensive quasi-simultaneous multiwavelength (MWL) campaigns ever conducted. With the aim of investigating the physical processes […]


Continue.. Broadband multiwavelength properties of the archetypal blazar 3C 279 during the 2017 Event Horizon Telescope campaign

Substructures in Planet-Forming Disks with the SKAO

Posted by klaurent Peking

Kavli Affiliate: Ruobing Dong | Summary:Disks of gas and dust orbiting young stars are the arenas and material reservoirs for planet formation. Over the past decade, multiwavelength observations, from infrared to radio, have resolved the spatial distribution of hundreds of protoplanetary disks in nearby star-forming regions, revealing a diverse zoo of substructures. These substructures are […]


Continue.. Substructures in Planet-Forming Disks with the SKAO

Substructures in Planet-Forming Disks with the SKAO

Posted by klaurent Peking

Kavli Affiliate: Ruobing Dong | Summary:Disks of gas and dust orbiting young stars are the arenas and material reservoirs for planet formation. Over the past decade, multiwavelength observations, from infrared to radio, have resolved the spatial distribution of hundreds of protoplanetary disks in nearby star-forming regions, revealing a diverse zoo of substructures. These substructures are […]


Continue.. Substructures in Planet-Forming Disks with the SKAO

Lattice non-invertible symmetry from non-commuting transfer matrices

Posted by klaurent Tokyo

Kavli Affiliate: Masahito Yamazaki | Summary:Conventional quantum integrability is encoded in a commuting algebra of transfer matrices. By contrast, several models possess additional non-commuting conserved charges with important physical consequences, yet the nature of the corresponding symmetry has remained elusive. Focusing on the XXZ spin chain at roots of unity, we show that the non-Abelian […]


Continue.. Lattice non-invertible symmetry from non-commuting transfer matrices

Lattice non-invertible symmetry from non-commuting transfer matrices

Posted by klaurent Tokyo

Kavli Affiliate: Masahito Yamazaki | Summary:We establish a direct connection between Onsager symmetry, duality defects, and quantum integrability in the XXZ spin chain at roots of unity, $Δ=(q+q^-1)/2$ with $q^N=pm1$. Using a non-Abelian algebra of transfer matrices governed by an unbalanced version of the Yang–Baxter/RLL relation, we construct an explicit lattice realization of the Onsager […]


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Observation of A Solar Like Magnetic Reconnection Event in an AGN Corona with XRISM

Posted by klaurent MIT

Kavli Affiliate: Erin Kara | Summary:The X-ray source in AGN is commonly referred to as the corona by analogy to stellar coronae. The similarities between the two suggest that the heating mechanism of AGN coronae is magnetic reconnection — as in cool stars — but this has not yet been directly observed. This work presents […]


Continue.. Observation of A Solar Like Magnetic Reconnection Event in an AGN Corona with XRISM

Observation of A Solar Like Magnetic Reconnection Event in an AGN Corona with XRISM

Posted by klaurent MIT

Kavli Affiliate: Erin Kara | Summary:The X-ray source in AGN is commonly referred to as the corona by analogy to stellar coronae. The similarities between the two suggest that the heating mechanism of AGN coronae is magnetic reconnection — as in cool stars — but this has not yet been directly observed. This work presents […]


Continue.. Observation of A Solar Like Magnetic Reconnection Event in an AGN Corona with XRISM

FUTO Swipe: Layout-Agnostic Neural Swipe Decoding

Posted by klaurent Chicago

Kavli Affiliate: David W. Miller | Summary:Neural swipe decoders are typically tied to the keyboard they were trained on, requiring a new corpus and training run for each layout. In this report, we document our approach toward training models that can function on any contiguous mobile keyboard layout. At each point along the swipe, our […]


Continue.. FUTO Swipe: Layout-Agnostic Neural Swipe Decoding