Results 51 to 60 of about 260,764 (294)
Fractal and Fractional, 2023 This work provides exact and analytical approximate solutions for a non-linear time-fractional generalized biology population model (FGBPM) with suitable initial data under the time-Caputo fractional derivative, in view of a novel effective and ...
Mohammad Alaroud +3 more
doaj +1 more source
, 2005 We consider a model of spatial spread that has applications in both material science and biology. The classical models are based upon partial differential equations, in particular reaction-diffusion equations. Here the dispersal term is given in terms of
Grinfeld, M. +4 more
core
, 2005 A direct method for the computation of polynomial conservation laws of polynomial systems of nonlinear partial differential equations (PDEs) in multi-dimensions is presented. The method avoids advanced differential-geometric tools.
Ablowitz +29 more
core +1 more source
Effects of chronic browsing on life‐history traits of an irruptive large herbivore population
Population Ecology, EarlyView.This study aimed to determine the relationship between diet quality, body mass, and size (hind foot length), and female reproduction and sought to identify the mechanism by which high density under severe food limitations is maintained. Our results demonstrated that sika deer introduced to Nakanoshima Island have maintained high densities through high ...
Koichi Kaji +9 more
wiley +1 more source
Concrete and Formal Operational Thought: Implications for Introductory College Biology [PDF]
The American Biology Teacher, 1976 THE COGNITIVE ABILITIES of concrete operational and formal operational thinkers, as defined by the Swiss psychologist Jean Piaget, have received a great deal of attention in recent years. This article briefly describes the stages involved in Piaget's model and reviews the current literature as it applies to Piaget's ideas and specifically to students ...
Ronald G. Good, Suzanne B. Haley
openaire +2 more sources
Network topology drives population temporal variability in experimental habitat networks
Population Ecology, EarlyView.Habitat patches connected by dispersal pathways form habitat networks. We explored how network topology affects population outcomes in laboratory experiments using a model species (Daphnia carinata). Central habitat nodes in complex lattice networks exhibited lower temporal variability in population sizes, suggesting they support more stable ...
Yiwen Xu +3 more
wiley +1 more source
Boundary value problems for systems of non-degenerate difference-algebraic equations
Visnik Harkivsʹkogo Nacionalʹnogo Universitetu im. V.N. Karazina. Cepiâ Matematika, Prikladna Matematika i Mehanika, 2019 The study of differential-algebraic boundary value problems was initiated in the works of K. Weierstrass, N.N. Luzin and F.R. Gantmacher. Systematic study of differential-algebraic boundary value problems is devoted to the work of S.
Sergey Chuiko +2 more
doaj +1 more source
Synthetic biology—putting engineering into biology [PDF]
, 2006 Synthetic biology is interpreted as the engineering-driven building of increasingly complex biological entities for novel applications. Encouraged by progress in the design of artificial gene networks, de novo DNA synthesis and protein engineering, we ...
Heinemann, Matthias,, Panke, Sven,
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Insights into PI3K/AKT signaling in B cell development and chronic lymphocytic leukemia
FEBS Letters, EarlyView.This Review explores how the phosphoinositide 3‐kinase and protein kinase B pathway shapes B cell development and drives chronic lymphocytic leukemia, a common blood cancer. It examines how signaling levels affect disease progression, addresses treatment challenges, and introduces novel experimental strategies to improve therapies and patient outcomes.
Maike Buchner
wiley +1 more source
Population Dynamics and Non-Hermitian Localization
, 1999 We review localization with non-Hermitian time evolution as applied to simple models of population biology with spatially varying growth profiles and convection.
A.R. Robinson +23 more
core +1 more source