Non-linear population discrete models with two time scales: re-scaling of part of the slow process

Autor: Sanz, Luis, de la Parra, Rafael Bravo, Marvá, Marcos, Sánchez, Eva

Publikováno v: Sanz, L., Bravo de la Parra, R., Marv\'a, M., & S\'anchez, E, 2019, Non-linear population discrete models with two time scales: re-scaling of part of the slow process. Advances in Difference Equations, 2019(1), 1-25

In this work we present a reduction result for discrete time systems with two time scales. In order to be valid, previous results in the field require some strong hypotheses that are difficult to check in practical applications. Roughly speaking, the

Externí odkaz: http://arxiv.org/abs/2402.04803

Discrete epidemic models with two time scales

Autor: Sanz-Lorenzo, Luis, de la Parra, Rafael Bravo

Publikováno v: Advances in Difference Equations, 2021(1), 1-24

The main aim of the work is to present a general class of two time scales discrete-time epidemic models. In the proposed framework the disease dynamics is considered to act on a slower time scale than a second different process that could represent m

Externí odkaz: http://arxiv.org/abs/2402.03958

Discrete-time staged progression epidemic models

Autor: Luis Sanz-Lorenzo, Rafael Bravo de la Parra

Publikováno v: Mathematical and Computer Modelling of Dynamical Systems, Vol 30, Iss 1, Pp 496-522 (2024)

In the Staged Progression (SP) epidemic models, infected individuals are classified into a suitable number of states. The goal of these models is to describe as closely as possible the effect of differences in infectiousness exhibited by individuals

Externí odkaz: https://doaj.org/article/a64245f867e8416a9dfc3e8a3d8cc71e

Cell-specific regulation of the circadian clock by BMAL1 in the paraventricular nucleus: Implications for regulation of systemic biological rhythms

Autor: Rachel Van Drunen, Yulin Dai, Haichao Wei, Baharan Fekry, Sina Noori, Samay Shivshankar, Rafael Bravo, Zhongming Zhao, Seung-hee Yoo, Nicholas Justice, Jia Qian Wu, Qingchun Tong, Kristin Eckel-Mahan

Publikováno v: Cell Reports, Vol 43, Iss 7, Pp 114380- (2024)

Summary: Circadian rhythms are internal biological rhythms driving temporal tissue-specific, metabolic programs. Loss of the circadian transcription factor BMAL1 in the paraventricular nucleus (PVN) of the hypothalamus reveals its importance in metab

Externí odkaz: https://doaj.org/article/f22c96455dcb4bc4974719b6c4a5baca

Endothelial‐specific telomerase inactivation causes telomere‐independent cell senescence and multi‐organ dysfunction characteristic of aging.

Autor: Gao, Zhanguo¹ (AUTHOR), Santos, Rafael Bravo¹ (AUTHOR), Rupert, Joseph¹ (AUTHOR), Van Drunen, Rachel¹ (AUTHOR), Yu, Yongmei¹ (AUTHOR), Eckel‐Mahan, Kristin¹ (AUTHOR), Kolonin, Mikhail G.¹ (AUTHOR) mikhail.g.kolonin@uth.tmc.edu

Publikováno v: Aging Cell. Jun2024, Vol. 23 Issue 6, p1-21. 21p.