Buscador de Tesis y publicaciones académicas

Artículo 2027 Acceso abierto Revisado por pares

Arithmetic exceptionality of Lattès maps

Songpon Sriwongsa · Detchat Samart · Chatchawan Panraksa

Let $\mathbb{F}_q$ denote a finite field of order $q$. A rational function $r(x)\in \mathbb{Q}(x)$ is said to be arithmetically exceptional if it induces a permutation on $\mathbb{P}^1(\mathbb{F}_p)$ for infinitely many primes $p$. Based on some computational results, Odabaş conjectured that for each $k\in \mathbb{N}$,...

Number Theory 11T06, 11G05, 11G15 FOS: Mathematics Number Theory (math.NT)

• Elsevier BV
• English
• DOI: 10.1016/j.ffa.2026.102929

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Artículo 2027 Acceso abierto Revisado por pares

A hybrid continuous–discrete single-cell model for Chlorella vulgaris integrating photophysiology, internal nutrient quotas and multiple fission

Antonio Átila Menezes Ferreira · John Hebert da Silva Felix · Lucia Andrea Sindeaux de Oliveira · Thiago Queiroz da Silva · y 2 más

Population-scale models of microalgal growth represent the culture as average biomass and do not explicitly describe discrete cell-cycle events such as commitment, size variation and daughter-cell number. This limitation is relevant for Chlorella vulgaris, which divides by multiple fission and produces a variable numbe...

• Elsevier BV
• English
• DOI: 10.1016/j.compbiolchem.2026.109353

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Artículo 2027 Acceso abierto Revisado por pares

Dynamic transient control of hydrogen direct-injection SI engines: effects of ramp duration on engine performance and abnormal combustion

Zayne Zaman · Mohamed Mohamed · Xinyan Wang · Hua Zhao · y 2 más

Hydrogen internal combustion engines offer a route to near-zero carbon on-road transport while preserving existing engine manufacturing and calibration know-how. Translating that potential into real-world driving, however, depends on transient control; steady-state maps alone cannot guarantee either safe operation or l...

Physical Chemistry (incl. Structural) Energy Chemical Engineering Mechanical Engineering

• Elsevier BV
• United Kingdom
• English
• DOI: 10.1016/j.fuel.2026.140829

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Artículo 2027 Acceso abierto Revisado por pares

Bivariate local permutation polynomials, their companions, and related enumeration results

Sartaj Ul Hasan · Ramandeep Kaur · Hridesh Kumar

We construct a new family of permutation group polynomials over finite fields of arbitrary characteristic, which are special types of bivariate local permutation polynomials. For this family, we explicitly construct their companion. We also determine the total number of permutation group polynomials of this form. Moreo...

Combinatorics FOS: Mathematics Combinatorics (math.CO)

• Elsevier BV
• English
• DOI: 10.1016/j.jcta.2026.106259

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Artículo 2027 Acceso abierto Revisado por pares

An iterative problem-driven scenario reduction framework for stochastic optimization with conditional value-at-risk

Yingrui Zhuang · Lin Cheng · Ning Qi · Mads R. Almassalkhi · y 1 más

Scenario reduction (SR) alleviates the computational complexity of scenario-based stochastic optimization with conditional value-at-risk (SBSO-CVaR) by identifying representative scenarios to depict the underlying uncertainty and tail risks. Existing distribution-driven SR methods emphasize statistical similarity but o...

Optimization and Control (math.OC) Optimization and Control other engineering and technologies FOS: Mathematics

• Elsevier BV
• English
• DOI: 10.1016/j.epsr.2026.113730

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Artículo 2027 Acceso abierto Revisado por pares

Engineering nonconventional yeasts to produce carboxylic acids: Advances and Prospects

Zhang, Lin · Fan, YaChao · Shi, WenJing · Zhou, XingYu

Due to their versatile carboxy group, carboxylic acids can be used as bio-based monomers for high-value-added industrial products with great market demand. In recent years, metabolic engineering of nonconventional yeasts to produce carboxylic acids from renewable raw materials is showing increasing promise. In this rev...

agricultural biotechnology agricultural and veterinary sciences Review Article

• Elsevier BV
• English
• DOI: 10.1016/j.synbio.2026.06.004

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Artículo 2027 Acceso abierto Revisado por pares

Molecular typing of Cryptosporidium spp. circulating across multiple sources in a Latin American country

Maria Alejandra, Ramos-Silva · Deisy Katherine, Quiñones-Guacan · Pedro, Moreno-Tovar · Maria Del Pilar, Crespo-Ortiz

Cryptosporidium is an intestinal protozoan causing diarrheal disease in humans and non-human animals, with severe and chronic disease primarily affecting young and immunosuppressed individuals. Among the general population, C. parvum (zoonotic) and C. hominis (anthroponotic) are the two main species involved in food- a...

health sciences Genotype Cryptosporidiosis Cryptosporidium

• Elsevier BV
• English
• DOI: 10.1016/j.parint.2026.103349

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Artículo 2027 Acceso abierto Revisado por pares

Invariant tori and periodic orbits in the FitzHugh-Nagumo system

Murilo R. Cândido · Douglas D. Novaes · Nasrin Sadri

The FitzHugh-Nagumo system is a $4$-parameter family of $3$D vector field used for modeling neural excitation and nerve impulse propagation. The origin represents a Hopf-zero equilibrium in the FitzHugh-Nagumo system for two classes of parameters. In this paper, we employ recent techniques in averaging theory to invest...

Classical Analysis and ODEs Classical Analysis and ODEs (math.CA) FOS: Mathematics 37G15, 34C23, 34C29

• Elsevier BV
• English
• DOI: 10.1016/j.nonrwa.2026.104676

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Artículo 2027 Acceso abierto Revisado por pares

Direct electrochemical modulation of the membrane potential enables insulin secretion control in pancreatic β-cells cultured on electrodes

Reiji, Shigematsu · Hiroki, Kaieda · Ichiro, Imae · Yoshiteru, Amemiya · y 5 más

Interfaces that convert digitally defined signals into biological analog functions (D/A biointerfaces) remain underdeveloped compared with biosensors that digitize biological analog information (A/D biointerfaces). Here, we report direct electrochemical control of insulin secretion through membrane-potential modulation...

• Elsevier BV
• English
• DOI: 10.1016/j.bioelechem.2026.109424

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Artículo 2027 Acceso abierto Revisado por pares

On Neumaier Cayley graphs

Rhys J. Evans · Sergey Goryainov · Grigory Ryabov · Da Zhao

In the present paper, we study Neumaier Cayley graphs. First, we give a criterion for a Cayley graph to be a Neumaier graph with a spread given by the cosets of a subgroup. Further, we construct a new infinite family of Neumaier Cayley graphs of unbounded nexus. Finally, we provide an algorithm for enumerating Neumaier...

Combinatorics FOS: Mathematics 05B10, 05C25, 05E30 computer and information sciences

• Elsevier BV
• English
• DOI: 10.1016/j.disc.2026.115449

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