Our aim in this paper is to investigate the boundedness, the extreme stability, and the periodicity of positive solutions of the periodically forced Sigmoid Beverton-Holt model: [Formula: see text] where {a ( n )} is a positive periodic sequence with period p and δ>0. In the special case when δ=1, the above equation reduces to the well-known periodic Pielou logistic equation which is known to be equivalent to the periodically forced Beverton-Holt model.
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http://dx.doi.org/10.1080/17513758.2011.552738 | DOI Listing |
Pathologie (Heidelb)
January 2025
Orthopädische Klinik und Poliklinik, Universitätsmedizin Rostock, Rostock, Deutschland.
Joint endoprosthetics is one of the most successful surgical-orthopedic procedures worldwide, enabling pain reduction and complete restoration of mobility. In the Federal Republic of Germany, around 400,000 joint endoprostheses, hip and knee joints are currently implanted every year ( https://www.eprd.
View Article and Find Full Text PDFPhysiol Behav
January 2025
Memory and Cognition Studies Laboratory, Department of Psychology, Federal University of Paraiba, João Pessoa, PB, Brazil. Electronic address:
The T22 protocol is an animal model of forced internal desynchronization, in which rats are exposed to an 11:11 light-dark (LD) cycle. This non-invasive protocol induces the dissociation of circadian rhythms in adult rats, making it possible to study the effects of circadian disruption on physiological and behavioral processes such as learning, memory, and emotional responses. However, the effects of circadian dissociation during other developmental stages, such as adolescence, remain unexplored.
View Article and Find Full Text PDFBraz J Biol
January 2025
Embrapa Agrobiologia, Seropédica, RJ, Brasil.
The objective was to evaluate the sensitivity of Piptadenia gonoacantha seeds to desiccation and storage conditions. The seeds were subjected to artificial drying in a forced air convection oven (39.7 °C ± 0.
View Article and Find Full Text PDFInt J Chron Obstruct Pulmon Dis
January 2025
School of Translational Medicine, Monash University, Melbourne, VIC, Australia.
Purpose: Oral corticosteroids (OCS) are recommended for the treatment of exacerbations in people with COPD; however, high cumulative lifetime doses (≥1000mg prednisolone-equivalent) are associated with adverse health effects. This issue is well defined in asthma but is less well understood in COPD. The aim of this study was to examine cumulative OCS dispensed to people with COPD over 12 months.
View Article and Find Full Text PDFIntroduction: Elexacaftor/tezacaftor/ivacaftor (ETI) has shown significant improvements in pulmonary and nutritional status in persons with cystic fibrosis (pwCF). Less is known about the extrapulmonary impact of ETI and effects on airway microbiology, lung clearance index (LCI) and fraction of exhaled nitric oxide (FeNO).
Methods: A multicentre prospective observational trial, including 79 pwCF ≥ 18 years eligible for ETI.
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