Universidad Nacional Autónoma de México

Symmetry-Based Reformulation of the Gravity Sensitivity Matrix for Efficient Regional-Scale Gravity Imaging

Regional-scale gravity imaging is limited by the size of the sensitivity matrix: a direct three-dimensional formulation of the gravity operator requires on the order of 1013 coefficients, making explicit storage infeasible on standard hardware. We exploit two symmetry properties...

Ground-motion dataset for shallow earthquakes in Colombia

Abstract. The tectonics of Colombia is characterised by the interaction of multiple oceanic plates subducting beneath the continent, generating active transpressional deformation and a wide range of subduction-related and crustal earthquakes. We present a flatfile containing grou...

Towards local and compositional measurements in quantum field theory

A universal framework for the joint measurement of multiple localized observables in quantum field theory satisfying spacetime locality and compositionality is still lacking. We present an approach to the problem that is based on the one hand on the positive formalism, an axiomat...

Breaking the Blend: A multi-tracer kinematic decomposition method for IFS data applied to disentangling the AGN outflow and circumnuclear ring in NGC 5728 with JWST

Abstract Integral field spectroscopy (IFS) of the central kiloparsecs of active galactic nuclei (AGN) reveals a mixture of spatially coincident emission from star-formation and AGN feedback exciting the interstellar medium. Disentangling these components remains a challenge, as m...

Tidal disruption of stellar binaries as a pathway to exotic transients

Abstract Tidal disruption event (TDE) progenitors are commonly modelled as single stars on parabolic orbits around a supermassive black hole (SMBH), yet observations reveal a richer diversity of dynamical pathways. We show that tidal separation of stellar binaries by a 106 M⊙ SMB...

The Composite Spectrum of QSO Absorption Line Systems in DESI DR2

Abstract We present details regarding a composite spectrum of quasar (QSO) absorption line systems. In this composite spectrum, we identify more than 70 absorption lines and observe oxygen and hydrogen emission features at a higher signal-to-noise ratio than any previous study. A...

On the Lavrentiev Gap for Manifold-Valued Maps

Abstract We characterize necessary and sufficient conditions ensuring approximation by smooth maps in the Sobolev space $$W^{1,\varphi }$$ W 1 , φ between suitable compact manifolds, where the prototypical example of Young function $$\varphi $$ φ is the double-phase integrand.

The AMIGa complex is at the crossroads of cytochrome c oxidase and ATP synthase biogenesis

Abstract Cytochrome c oxidase (CIV) and ATP synthase are part of the oxidative phosphorylation machinery. Their modular, highly regulated assembly requires specific factors and is coordinated through a common intermediate, the Atco complex, composed of the Atp9 ring and Cox6. By...

Serum BDNF, VEGF, and EGF Levels in Pregnant Women with Anxiety and Depression

Antenatal anxiety and depression frequently co-occur, negatively affecting maternal and offspring outcomes, yet their biological correlates remain insufficiently characterized. This cross-sectional study examined associations between anxiety and depressive symptoms and serum conc...

Click Bioconjugation of Aza‐BODIPY Fluorophores to LfcinB Peptides for Improved Biocompatibility

Near‐infrared (NIR) organic fluorophores have emerged as promising for biomedical imaging and theragnostics, offering deep‐tissue penetration and reduced background interference. However, poor aqueous solubility and limitations in photostability, biocompatibility, and targeting h...

Early growth, biomass allocation, and nutrient stoichiometry of Pinus pseudostrobus seedlings grown in commercial and locally available substrate mixtures

Seedling quality is a key determinant of reforestation success, yet the use of peat moss ( Sphagnum sp.) as the dominant substrate component imposes economic and logistical barriers for community nurseries in developing countries. We evaluated the early growth, biomass allocation...

Tuning optical response and wettability of aluminum surfaces via polarization-controlled femtosecond laser texturing

Femtosecond laser texturing offers a contactless route to tailor the optical and wetting properties of metallic surfaces. Here, we investigate the effect of laser polarization on commercial mirror-finished Al 5005-H34 by comparing linear and circular polarization under matched fl...

Spatial prioritization for conserving hummingbird–plant interaction roles across Mexico

Global biodiversity goals acknowledge that conserving species alone is insufficient to maintain ecosystem functioning. Yet, spatial conservation planning rarely incorporates ecological interactions, limiting efforts to protect both species' persistence and the ecological processe...

Convective-derivative control of viscous heating in Gordon–Schowalter plane Poiseuille flow: thermal equivalence of the Maxwell limits and constitutive sensitivity

We analyse viscous heating in steady plane Poiseuille flow of a Gordon–Schowalter fluid between isothermal walls and determine how the convective-derivative parameter $$a\in [-1,1]$$ controls the thermal response. For $$\beta =O(1)$$ , a regular expansion to first order in the Br...

Gravitational entropy in Petrov Type I spacetimes

Abstract The gravitational entropy proposal of Clifton, Ellis and Tavakol (CET) is based on an effective energy momentum tensor formed by the algebraic decomposition of the 4th order Bel-Robinson tensor. So far the application of the CET proposal has been limited to spacetimes of...

The DESI Y1 RR Lyrae Catalog. II. The Metallicity Dependency of Pulsational Properties, the Shape of the RR Lyrae Instability Strip, and Metal Rich RR Lyrae

Abstract RR Lyrae stars (RRLs) are valuable probes of both Milky Way assembly and stellar-evolution physics. Using a sample 6240 RRLs obtained in the first year of the Dark Energy Spectroscopic Instrument (DESI) survey, we investigate the metallicity of RRLs and its correlation w...

Genomic insights into the metabolic complementarity of a synthetic marine consortium for hydrocarbon degradation in coastal sand microcosms

Microbial consortia are essential for the degradation of complex hydrocarbon mixtures in coastal environments, yet the functional basis of consortium performance rarely resolved at strain level. In this study, we employed a Plackett–Burman experimental design to rationally assemb...

The DESI Y1 RR Lyrae Catalog. I. Empirical Modeling of the Cyclic Variation of Spectroscopic Properties and a Chemodynamical Analysis of the Outer Halo

Abstract We present the catalog of RR Lyrae stars (RRLs) observed in the first year of operations of the Dark Energy Spectroscopic Instrument (DESI) survey. This catalog contains 6240 RRLs out to ∼120 kpc from the Galactic center and over 12,000 individual epochs with homogeneous...

Generalized Nonlinear Bayesian Pulsar Timing with ENTERPRISE

Abstract We use the Bayesian methods in the ENTERPRISE package to examine the fully general parameterization of pulsar timing models in tandem with noise. We investigate four pulsars, PSRs J1600–3053, J2043+1711, J0740+6620, and J1640+2224, through the lens of Bayesian timing. We...

Conservative Management of Rhinophyma with Pharmacological Therapy: Experience from a Case Report

Rhinophyma represents an advanced manifestation of phymatous rosacea and is characterized by progressive sebaceous gland hyperplasia, dermal fibrosis, and thickening of the nasal skin, resulting in cosmetic deformity and, in advanced cases, functional impairment. Although surgica...