Results 41 to 50 of about 589,270 (268)

Global Properties of HIV-1 Dynamics Models with CTL Immune Impairment and Latent Cell-to-Cell Spread

open access: yesMathematics, 2023
This paper presents and analyzes two mathematical models for the human immunodeficiency virus type-1 (HIV-1) infection with Cytotoxic T Lymphocyte cell (CTL) immune impairment.
Noura H. AlShamrani   +3 more
doaj   +1 more source

Complex Dynamics Analysis of a Discrete Amensalism System with a Cover for the First Species

open access: yesAxioms, 2022
Of interest is the dynamics of the discrete-time amensalism model with a cover on the first species. We first obtain the existence and stability of fixed points and the conditions for the permanent coexistence of two species.
Qimei Zhou, Fengde Chen, Sijia Lin
doaj   +1 more source

Global stability in job systems

open access: yesJournal of Mathematical Analysis and Applications, 1988
A simple job system with n grades is introduced here and it is described by a system \(\dot x_ i=x_ i\sum^{n}_{j=1}a_{ij}x_ j\), \(i=1,2,...,n\). The per capita growth rate coefficients \(a_{ij}\) are such that \(a_{ii}0\), \(i\neq j\). Under these conditions a complete picture of the phase portrait of the system is presented as follows: Let \(A=(a_{ij}
Karakostas, G., Gyori, I.
openaire   +2 more sources

The scaling relationship between leaf nitrogen and phosphorus concentrations in vascular epiphytes

open access: yesFrontiers in Plant Science
IntroductionThe scaling relationship between leaf nitrogen (N) and phosphorus (P) concentrations reflects plant adaptation strategies and evolutionary dynamics.
T. Hu   +7 more
doaj   +1 more source

Feedback control effect on the Lotka-Volterra prey-predator system with discrete delays

open access: yesAdvances in Difference Equations, 2017
In this paper, we study a Lotka-Volterra prey-predator system with feedback control. We establish sufficient conditions under which a unique positive equilibrium is globally stable.
Chunling Shi, Xiaoying Chen, Yiqin Wang
doaj   +1 more source

European Standard Clinical Practice Guideline and EXPeRT Recommendations for the Diagnosis and Management of Gastroenteropancreatic Neuroendocrine Neoplasms in Children and Adolescents

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Pediatric gastroenteropancreatic neuroendocrine neoplasms (GEP‐NENs) are extremely rare and clinically heterogeneous. Management has largely been extrapolated from adult practice. This European Standard Clinical Practice Guideline (ESCP), developed by the EXPeRT network in collaboration with adult NEN experts, provides (adult) evidence ...
Michaela Kuhlen   +23 more
wiley   +1 more source

Effects of precipitation changes and drought events on sap flow density of Lannea coromandelica in a Savanna ecosystem in Southwest China

open access: yesJournal of Hydrology: Regional Studies
Study region: The Yuanjiang Savanna ecosystem (YSE) located in Southwest China. Study focus: The Lannea coromandelica tree species in YSE would be more sensitive to changing precipitation regime, yet its response to this regime has not been adequately ...
Youxing Lin   +5 more
doaj   +1 more source

Mathematical Analysis of a Prey–Predator System: An Adaptive Back-Stepping Control and Stochastic Approach

open access: yesMathematical and Computational Applications, 2019
In this paper, stochastic analysis of a diseased prey⁻predator system involving adaptive back-stepping control is studied. The system was investigated for its dynamical behaviours, such as boundedness and local stability analysis.
Kalyan Das   +3 more
doaj   +1 more source

Global Dynamics of an HTLV-I and SARS-CoV-2 Co-Infection Model with Diffusion

open access: yesMathematics, 2023
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is a novel respiratory virus that causes coronavirus disease 2019 (COVID-19). Symptoms of COVID-19 range from mild to severe illness.
Ahmed M. Elaiw   +3 more
doaj   +1 more source

Efficacy and Tolerability of Topotecan/Cyclophosphamide/Dinutuximab in Relapsed and Refractory High‐Risk Neuroblastoma: A Multi‐Institutional Retrospective Study

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Purpose Chemoimmunotherapy with irinotecan, temozolomide, and dinutuximab (I/T/DIN) has emerged as first‐line therapy for relapsed/refractory (r/r) high‐risk neuroblastoma (HRNB) in North America. Topotecan and cyclophosphamide (T/C) are often used in combination with dinutuximab in the setting of lack of response, progression, or incomplete ...
Benjamin J. Lerman   +17 more
wiley   +1 more source

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