Results 21 to 30 of about 2,932,216 (187)
Infection Models for Pine Wilt Disease on the Basis of Vector Behaviors
Population Ecology, EarlyView.Infection models for pine wilt disease without vector density were built to estimate the transmission coefficient of the pathogenic nematode. The models successfully simulated the annual change in the density of infected trees for four pine stands. ABSTRACT Pine wilt disease is caused by the pinewood nematode (Bursaphelenchus xylophilus Steiner et ...
Katsumi Togashi
wiley +1 more source
Positive Solutions of Nonlinear Elliptic Eigenvalue Problems [PDF]
, 1970 We shall study a class of mildly nonlinear elliptic eigenvalue problems which are suggested by several recently occurring problems concerning the steady state temperature distribution of a physical medium in which heat is being generated ...
Cohen, Donald S., Simpson, R. Bruce
core
On positive solutions and the Omega limit set for a class of delay differential equations
, 2012 This paper studies the positive solutions of a class of delay differential equations with two delays. These equations originate from the modeling of hematopoietic cell populations. We give a sufficient condition on the initial function for $t\leq 0$ such
B. Dorizzi +15 more
core +1 more source
Population Ecology, EarlyView.Population size and dynamics fundamentally shape speciation by influencing genetic drift, founder events, and adaptive potential. Small populations may speciate rapidly due to stronger drift, whereas large populations harbor more genetic diversity, which can alter divergence trajectories. We highlight theoretical models that incorporate population size
Ryo Yamaguchi +3 more
wiley +1 more source
On a Fractional Differential Equation with r-Laplacian Operator and Nonlocal Boundary Conditions
Mathematics, 2022 We study the existence and multiplicity of positive solutions of a Riemann-Liouville fractional differential equation with r-Laplacian operator and a singular nonnegative nonlinearity dependent on fractional integrals, subject to nonlocal boundary ...
Johnny Henderson +2 more
doaj +1 more source
Positive Solutions of Periodic Boundary Value Problems for a Class of Second-order Ordinary Differential Equations [PDF]
, 2018 In this paper, we consider the existence of positive solutions to the second-order periodic boundary value problems ...
Kang, H. (Hongliang)
core
Evolutionary interplay between viruses and R‐loops
FEBS Letters, EarlyView.Viruses interact with specialized nucleic acid structures called R‐loops to influence host transcription, epigenetic states, latency, and immune evasion. This Perspective examines the roles of R‐loops in viral replication, integration, and silencing, and how viruses co‐opt or avoid these structures.
Zsolt Karányi +4 more
wiley +1 more source
Enhancing smart readiness of buildings: bridging the knowledge gap to European citizens
International Journal of Sustainable EnergyThis study delves into the Smart Readiness Indicator (SRI), an innovative measure designed to assess and enhance the smart capabilities of buildings across Europe.
Afroditi Zamanidou +7 more
doaj +1 more source
Positive solutions for singular $\phi-$Laplacian BVPs on the positive half-line
Electronic Journal of Qualitative Theory of Differential Equations, 2009 In this work, we are concerned with the existence of positive solutions for a $\phi$ Laplacian boundary value problem on the half-line. The results are proved using the fixed point index theory on cones of Banach spaces and the upper and lower solution ...
Smail Djebali, O. Saifi
doaj +1 more source
Circulating histones as clinical biomarkers in critically ill conditions
FEBS Letters, EarlyView.Circulating histones are emerging as promising biomarkers in critical illness due to their diagnostic, prognostic, and therapeutic potential. Detection methods such as ELISA and mass spectrometry provide reliable approaches for quantifying histone levels in plasma samples.
José Luis García‐Gimenez +17 more
wiley +1 more source