Results 61 to 70 of about 2,847,238 (284)

Asymptotic properties of stochastic population dynamics [PDF]

, 2008
In this paper we stochastically perturb the classical Lotka{Volterra model x_ (t) = diag(x1(t); ; xn(t))[b + Ax(t)] into the stochastic dierential equation dx(t) = diag(x1(t); ; xn(t))[(b + Ax(t))dt + dw(t)]: The main aim is to study the asymptotic ...
Deng, Feiqi, EPSRC (U.K.) (Funder), Jinan University of China (Funder), Key Programs of Science and Technology of Guangzhou (Funder), Mao, Xuerong, National Natural Science Foundation of China (Funder), Pang, Sulin   +6 more
core  

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

FEBS 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, Shin‐ichi Tate, Kyota Yasuda   +2 more
wiley   +1 more source

Hyperosmotic stress induces PARP1‐mediated HPF1‐dependent mono(ADP‐ribosyl)ation

FEBS Letters, EarlyView.
Sorbitol‐induced hyperosmotic stress rapidly induces reversible mono(ADP‐ribosyl)ation (MARylation) on PARP1 without the signs of genotoxic signaling. We show that PARP1 autoMARylation is HPF1 dependent and forms hydroxylamine‐resistant O‐glycosidic linkages.
Anna Georgina Kopasz, Mihály Mérey, Rebeka Vásárhelyi, Ramóna Pék, Victor Imburchia, László Henn, Adrián Kószó, Nicholas D. Lakin, Ivan Ahel, Sébastien Huet, Ágnes Czibula, Gyula Timinszky   +11 more
wiley   +1 more source

Contact Toxicity, Electrophysiology, Anti-Mating, and Repellent Effects of Piper guineense Against Spodoptera frugiperda (Lepidoptera: Noctuidae)

Insects
The fall armyworm, Spodoptera frugiperda, is a long-distance migratory pest, which invaded the African continent in 2016, causing enormous losses to agricultural crops, especially maize.
Mobolade D. Akinbuluma, Jacques A. Deere, Peter Roessingh, Astrid T. Groot   +3 more
doaj   +1 more source

Sociodemographic and lifestyle correlates of exclusive breastfeeding practices among mothers on antiretroviral therapy in the Eastern Cape, South Africa

International Breastfeeding Journal, 2021
Background Exclusive breastfeeding (EBF) is associated with a reduction of postnatal HIV transmission and optimal infant growth. Given that the factors influencing exclusive breastfeeding are multi-factorial and context-specific, we examined the ...
Daniel Ter Goon, Anthony Idowu Ajayi, Oladele Vincent Adeniyi   +2 more
doaj   +1 more source

Analysis of Population Dynamics of Terrorist Cells [PDF]

, 2014
Applied mathematics connects many different fields of science. This research focuses on the population dynamics of terrorist organizations, namely Al Qaeda, by creating a mathematical model, while still considering social science fields, such as ...
Dorman, Amanda
core   +1 more source

Two-Population Dynamics in a Growing Network Model

, 2011
We introduce a growing network evolution model with nodal attributes. The model describes the interactions between potentially violent V and non-violent N agents who have different affinities in establishing connections within their own population versus
Albert, Barabasi, Boccaletti, Boccaletti, Boccara, Buldyrev, Cartwright, Dorogovtsev, Ivan Iordanov, Kristinka Ivanova, Newman, Newman, Newman, Sageman, Sageman, Szabo, Szell, Toivonen, Toivonen, Vazquez, Watts, Xu   +21 more
core   +1 more source

Emergence and Growth of Complex Networks in Adaptive Systems [PDF]

, 1998
We consider the population dynamics of a set of species whose network of catalytic interactions is described by a directed graph. The relationship between the attractors of this dynamics and the underlying graph theoretic structures like cycles and ...
Jain, Sanjay, Krishna, Sandeep
core   +3 more sources

Linking neurogenesis, oligodendrogenesis, and myelination defects to neurodevelopmental disruption in primary mitochondrial disorders

FEBS Letters, EarlyView.
Mitochondrial remodeling shapes neural and glial lineage progression by matching metabolic supply with demand. Elevated OXPHOS supports differentiation and myelin formation, while myelin compaction lowers mitochondrial dependence, revealing mitochondria as key drivers of developmental energy adaptation.
Sahitya Ranjan Biswas, Porter L. Tomsick, Alicia M. Pickrell, Paul D. Morton   +3 more
wiley   +1 more source

Matrix methods in health demography: a new approach to the stochastic analysis of healthy longevity and DALYs

Population Health Metrics, 2018
Background Increases in human longevity have made it critical to distinguish healthy longevity from longevity without regard to health. Current methods focus on expectations of healthy longevity, and are often limited to binary health outcomes (e.g ...
Hal Caswell, Virginia Zarulli
doaj   +1 more source