Results 61 to 70 of about 2,627,557 (281)

Estimating the basic reproduction number for COVID-19 in Western Europe.

open access: yesPLoS ONE, 2021
ObjectiveTo estimate the basic reproduction number (R0) for COVID-19 in Western Europe.MethodsData (official statistics) on the cumulative incidence of COVID-19 at the start of the outbreak (before any confinement rules were declared) were retrieved in ...
Isabella Locatelli   +2 more
doaj   +1 more source

Population models with partial migration

open access: yes, 2015
Populations exhibiting partial migration consist of two groups of individuals: Those that mi- grate between habitats, and those that remain fixed in a single habitat.
De Leenheer, Patrick   +3 more
core   +1 more source

REPRODUCTION AND HABITAT OF TEN BRAZILIAN FROGS (ANURA) [PDF]

open access: yes, 2008
Basic data on habitat, behavior, and reproduction arelacking for most Neotropical frog species and even highertaxonomic groups (Crump 1974; Haddad and Prado2005), particularly for those restricted to the AtlanticForest.
Facure, Katia G., Giaretta, Ariovaldo A.
core   +2 more sources

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

open access: yesFEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa   +5 more
wiley   +1 more source

Lunar cycles of reproduction in the clown anemonefish Amphiprion percula: individual-level strategies and population-level patterns [PDF]

open access: yes, 2018
Lunar cycles of reproduction are a widespread phenomenon in marine invertebrates and vertebrates. It is common practice to infer the adaptive value of this behavior based on the population level pattern.
Seymour, Jeremiah R.
core  

Invasion reproductive numbers for periodic epidemic models

open access: yesInfectious Disease Modelling, 2019
There are many cases within epidemiology where infections compete to persist within a population. In studying models for such cases, one of the goals is to determine which infections can invade a population and persist when other infections are already resident within the population.
Mitchell, Christopher   +1 more
openaire   +2 more sources

Valosin‐containing protein counteracts ATP‐driven dissolution of FUS condensates through its ATPase activity in vitro

open access: yesFEBS Letters, EarlyView.
Biomolecular condensates formed by fused in sarcoma (FUS) are dissolved by high ATP concentrations yet persist in cells. Using a reconstituted system, we demonstrate that valosin‐containing protein (VCP), an AAA+ ATPase, counteracts ATP‐driven dissolution of FUS condensates through its D2 ATPase activity.
Hitomi Kimura   +2 more
wiley   +1 more source

Graphs with specified degree distributions, simple epidemics and local vaccination strategies

open access: yes, 2007
Consider a random graph, having a pre-specified degree distribution F but other than that being uniformly distributed, describing the social structure (friendship) in a large community. Suppose one individual in the community is externally infected by an
Britton, Tom   +2 more
core   +3 more sources

Stability Criteria for SIS Epidemiological Models under Switching Policies [PDF]

open access: yes, 2014
We study the spread of disease in an SIS model. The model considered is a time-varying, switched model, in which the parameters of the SIS model are subject to abrupt change. We show that the joint spectral radius can be used as a threshold parameter for
Fabian R. Wirth   +4 more
core   +3 more sources

Invasion reproductive numbers for discrete-time models

open access: yesInfectious Disease Modelling, 2019
Although invasion reproductive numbers (IRNs) are utilized frequently in continuous-time models with multiple interacting pathogens, they are yet to be explored in discrete-time systems. Here, we extend the concept of IRNs to discrete-time models by showing how to calculate them for a set of two-pathogen SIS models with coinfection. In our exploration,
Omomayowa Olawoyin, Christopher Kribs
openaire   +2 more sources

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