Buscador de Tesis y publicaciones académicas

Artículo 2027 Acceso abierto Revisado por pares

X-ray spectral scaling of black hole mass in quasi-periodic eruptive source RX J1301.9+2747

Lev Titarchuk · Elena Seifina · Vadim Arefiev · Diana Makhinya · y 1 más

We present a spectral and timing analysis of X-ray emission from the actively accreting supermassive black hole (SMBH) in RX~J1301.9+2747 with prominent quasi-periodic eruptions (QPEs) using {\it ASCA, ROSAT, XMM-Newton}, and {\it NICER} observations. {\it NICER} detected renewed QPE activity from this source in 2024....

High Energy Astrophysical Phenomena (astro-ph.HE) Astrophysics of Galaxies Astrophysics of Galaxies (astro-ph.GA) FOS: Physical sciences

• Elsevier BV
• English
• DOI: 10.1016/j.jheap.2026.100749

Leer el documento

Artículo 2027 Acceso abierto Revisado por pares

Assessment of pesticide deposition in household dust based on passive Petri dish sampling followed by QuEChERS extraction

Camille Pernet · Maryse F. Bouchard · Raphaëlle Teysseire · Jacques Brodeur · y 4 más

Pesticide exposure is a major public health concern worldwide, particularly affecting individuals living near agricultural fields. Household dust can be a significant source of exposure; however, most currently used sampling protocols capture pesticide contamination in dust only at discrete time points and are not alwa...

natural sciences chemical sciences

• Elsevier BV
• English
• DOI: 10.1016/j.talanta.2026.130473

Leer el documento

Artículo 2027 Acceso abierto Revisado por pares

Scaffold-shift uncertainty calibration in molecular activity prediction: A multi-target benchmark of coverage, efficiency, and risk-aware selection

Yanhui Guo

Uncertainty estimates are increasingly used to prioritize molecules, yet their reliability under chemical scaffold shift is poorly characterized. We benchmarked prediction intervals and downstream selection policies across six human protein targets using 20,327 target-specific ChEMBL 37 compound records (19,972 globall...

• Elsevier BV
• English
• DOI: 10.1016/j.compbiolchem.2026.109371

Leer el documento

Artículo 2027 Acceso abierto Revisado por pares

N-graphdiyne as a tunable platform for stabilizing light metals toward high-capacity reversible hydrogen storage

Wael Othman · Ibrahim Alghoul · Nacir Tit · K-F. Aguey-Zinsou · y 1 más

Hydrogen (H2) is a promising carbon-neutral energy carrier. However, its deployment is limited by the lack of lightweight, reversible storage media that operate under practical conditions. Here, we establish nitrogen-doped graphdiyne (N-GDY) as a programmable two-dimensional platform for stabilizing dispersed light-met...

Computational Physics Materials Science Materials Science (cond-mat.mtrl-sci) FOS: Physical sciences

• Elsevier BV
• English
• DOI: 10.1016/j.fuel.2026.140965

Leer el documento

Artículo 2027 Acceso abierto Revisado por pares

Stability results for Berge-matching in hypergraphs

Jia-Bao Yang · Leilei Zhang

Given a graph $F$, a hypergraph is called a Berge-$F$ if it can be obtained by expanding each edge of $F$ into a hyperedge containing it. Let $M_{k}$ denote the matching of size $k$. Kang, Ni, and Shan [12] determined the Turán number of Berge-$M_k$. Our main result shows that if an $r$-uniform hypergraph $H$ on $n$ ve...

Combinatorics FOS: Mathematics computer and information sciences Combinatorics (math.CO)

• Elsevier BV
• English
• DOI: 10.1016/j.disc.2026.115456

Leer el documento

Artículo 2027 Acceso abierto Revisado por pares

Optimizing prechamber design and engine calibration for non-quiescent lean-burn gas engines through 0/1D predictive combustion and emissions models

Andrea Piano · Guglielmo Rossi · Federico Millo · Enrica Malfi · y 5 más

Lean-burn gas operation is essential for meeting strict nitrogen oxides (NOx) emissions regulations and reducing fuel consumption in marine and power generation engines. Because efficient lean combustion requires high-energy ignition sources, the active Pre-Combustion Chamber (PCC) is universally recognized as the opti...

mechanical engineering engineering and technology

• Elsevier BV
• Italy
• English
• DOI: 10.1016/j.fuel.2026.140854

Leer el documento

Artículo 2027 Acceso abierto Revisado por pares

Tuberculosis biomarker detection using the intrinsic photoluminescence of carbonated hydroxyapatite nanoparticles

Nayla Naomi Kusimoto Takeuti · Thales Rafael Machado · Isabella Sampaio · Valtencir Zucolotto

Tuberculosis (TB) is an infectious disease caused by Mycobacterium tuberculosis (Mtb), classified as one of the main causes of death from infectious diseases in the world. Conventional diagnosis relies on sputum culture, an accurate but time-consuming method that requires specialized infrastructure, highlighting the ur...

• Elsevier BV
• English
• DOI: 10.1016/j.talanta.2026.130462

Leer el documento

Artículo 2027 Acceso abierto Revisado por pares

Systematic enzyme and cofactor engineering for efficient ursolic acid biosynthesis in Yarrowia lipolytica

Elsharawy, Hany · He, Qian · Zeng, Weizhu · Zhou, Jingwen

Ursolic acid (UA) is a pharmaceutically valuable pentacyclic triterpenoid, but its microbial production is constrained by inefficient cytochrome P450 catalysis and limited cofactor availability. Here, we engineered an efficient α-amyrin-producing Yarrowia lipolytica chassis for UA biosynthesis through integrated enzyme...

Original Research Article

• Elsevier BV
• English
• DOI: 10.1016/j.synbio.2026.05.012

Leer el documento

Artículo 2027 Acceso abierto Revisado por pares

Anti-Ramsey number of intersecting cliques

Lu, Hongliang · Luo, Xinyue · Ma, Xinxin

An edge-colored graph is called a rainbow graph if all its edges have distinct colors. The anti-Ramsey number $ar(n, G)$, for a graph $G$ and a positive integer $n$, is defined as the minimum number of colors $r$ such that every exact $r$-edge-coloring of the complete graph $K_n$ contains at least one rainbow copy of $...

Combinatorics FOS: Mathematics computer and information sciences Combinatorics (math.CO)

• Elsevier BV
• English
• DOI: 10.1016/j.disc.2026.115439

Leer el documento

Artículo 2027 Acceso abierto Revisado por pares

Microhaplotype-based chimerism analysis for sensitive monitoring following allogeneic hematopoietic stem cell transplantation

Wakaba, Iha · Shohei, Shigeto · Shoji, Saito · Hideyuki, Nakazawa · y 5 más

Relapse after allogeneic hematopoietic stem cell transplantation (allo-HSCT) remains a leading cause of treatment failure in patients with hematologic malignancies. Short tandem repeat (STR)-based chimerism analysis has limited analytical sensitivity, whereas minimal residual disease (MRD) assays are disease-specific a...

• Elsevier BV
• English
• DOI: 10.1016/j.cca.2026.121305

Leer el documento