Results 51 to 60 of about 336,429 (288)

Between Droughts and Floods: The Seasonal Response of Freshwater Snails in Artificial Reservoirs in the Brazilian Semiarid Region

Population Ecology, EarlyView.
We investigate the seasonal dynamics of two freshwater snails, Biomphalaria straminea and Melanoides tuberculata, in artificial reservoirs of the Brazilian semiarid region. Despite regulated hydrology, B. straminea exhibited strong seasonal fluctuations associated with dry periods, while M. tuberculata maintained stable populations throughout the year,
Lucas Henrique Sousa da Silva, João Hemerson de Sousa, Adriana Josefa da Rocha, Manuella Feitosa Leal, Lucas Ariel de Sousa Aguiar, Tamaris Gimenez Pinheiro, Edson Lourenço da Silva   +6 more
wiley   +1 more source

Some new nonlinear second-order boundary value problems on an arbitrary domain

Advances in Difference Equations, 2018
In this paper, we develop the existence theory for nonlinear second-order ordinary differential equations equipped with new kinds of nonlocal non-separated type integral multi-point boundary conditions on an arbitrary domain. Existence results are proved
Ahmed Alsaedi, Mona Alsulami, Ravi P. Agarwal, Bashir Ahmad   +3 more
doaj   +1 more source

Traveling waves for a bistable equation with nonlocal-diffusion [PDF]

, 2013
We consider a single component reaction-diffusion equation in one dimension with bistable nonlinearity and a nonlocal space-fractional diffusion operator of Riesz-Feller type.
Achleitner, Franz, Kuehn, Christian
core  

Speciation Through the Lens of Population Dynamics: A Theoretical Primer on How Small and Large Populations Diverge

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, Hidaka Kubo, Tokuya Ogawa, Hayate Omura   +3 more
wiley   +1 more source

Existence and Ulam-Hyers stability results for a class of fractional integro-differential equations involving nonlocal fractional integro-differential boundary conditions

Boletim da Sociedade Paranaense de Matemática
In this paper, we investigate the existence and uniqueness of solutions for a class of fractional integro- differential boundary value problems involving both Riemann–Liouville and Caputo fractional derivatives, and supplemented with multi-point and ...
Faouzi Haddouchi
semanticscholar   +1 more source

Exploring lipid diversity and minimalism to define membrane requirements for synthetic cells

FEBS Letters, EarlyView.
Designing the lipid membrane of synthetic cells is a complex task, in which its various roles (among them solute transport, membrane protein support, and self‐replication) should all be integrated. In this review, we report the latest top‐down and bottom‐up advances and discuss compatibility and complexity issues of current engineering approaches ...
Sergiy Gan, Victoria Scarpelli, Marten Exterkate   +2 more
wiley   +1 more source

Thermodynamic Bethe Ansatz Equations for Minimal Surfaces in AdS_3 [PDF]

, 2010
We study classical open string solutions with a null polygonal boundary in AdS_3 in relation to gluon scattering amplitudes in N=4 super Yang-Mills at strong coupling. We derive in full detail the set of integral equations governing the decagonal and the
A Brandhuber, A Brandhuber, A Jevicki, A Jevicki, A Mironov, A Mironov, AB Zamolodchikov, AN Kirillov, C Anastasiou, CR Fernandez-Pousa, CR Fernandez-Pousa, D Astefanesei, D Bombardelli, D Galakhov, D Gepner, D Gepner, EI Buchbinder, F Gliozzi, G Arutyunov, G Yang, H Dorn, H Dorn, H Dorn, H Itoyama, H Itoyama, I Bakas, I Bakas, J McGreevy, J McGreevy, JL Miramontes, JM Drummond, JM Drummond, JM Drummond, JM Drummond, JM Drummond, K Ito, K Sakai, K Sakai, Katsushi Ito, Kazuhiro Sakai, LF Alday, LF Alday, M Kruczenski, N Beisert, N Berkovits, N Gromov, N Gromov, OA Castro-Alvaredo, OA Castro-Alvaredo, P Dorey, P Dorey, P Dorey, P Dorey, Q-H Park, R Ricci, RC Brower, S Abel, S Dobashi, S Dobashi, S Ryang, V Bazhanov, V Duca Del, V Fock, VA Fateev, VV Bazhanov, Y Oz, Yasuyuki Hatsuda, Yuji Satoh, Z Bern, Z Bern, Z Komargodski, Z Komargodski   +71 more
core   +2 more sources

Microbial exopolysaccharide production by polyextremophiles in the adaptation to multiple extremes

FEBS Letters, EarlyView.
Polyextremophiles are microorganisms that endure multiple extreme conditions by various adaptation strategies that also include the production of exopolysaccharides (EPSs). This review provides an integrated perspective on EPS biosynthesis, function, and regulation in these organisms, emphasizing their critical role in survival and highlighting their ...
Tracey M Gloster, Ebru Toksoy Öner
wiley   +1 more source

Invariant measures of the 2D Euler and Vlasov equations [PDF]

, 2010
We discuss invariant measures of partial differential equations such as the 2D Euler or Vlasov equations. For the 2D Euler equations, starting from the Liouville theorem, valid for N-dimensional approximations of the dynamics, we define the ...
Chavanis P H, Chavanis P H Campa A Giansanti A Morigi G Labini F S, Courant R, Dauxois T, Eyink G, Freddy Bouchet, Holm D D Marsden J E Ratiu T S, Kiessling M K-H Campa A Giansanti A Morigi G Labini F S, Kraichnan R H, Lee T D, Lynden-Bell D, Marianne Corvellec, Mattingly J C Sinai Y G, Mouhot C Villani C, Robert R, Rockafellar R T, Salmon R, Spohn H   +17 more
core   +3 more sources

Structural dynamics of the plant hormone receptor ETR1 in a native‐like membrane environment

FEBS Letters, EarlyView.
The present study unveils the structural and signaling dynamics of ETR1, a key plant ethylene receptor. Using an optimized nanodisc system and solution NMR, we captured full‐length ETR1 in a native‐like membrane environment. Our findings reveal dynamic domain uncoupling and Cu(I)‐induced rigidification, providing the first evidence of metal‐triggered ...
Moritz Lemke, Nils Alexander Lakomek, Georg Groth   +2 more
wiley   +1 more source