Results 51 to 60 of about 2,653,054 (281)

A Signed Maximum Principle for Boundary Value Problems for Riemann–Liouville Fractional Differential Equations with Analogues of Neumann or Periodic Boundary Conditions

Mathematics
Sufficient conditions are obtained for a signed maximum principle for boundary value problems for Riemann–Liouville fractional differential equations with analogues of Neumann or periodic boundary conditions in neighborhoods of simple eigenvalues.
Paul W. Eloe, Yulong Li, Jeffrey T. Neugebauer   +2 more
doaj   +1 more source

Boundary dynamics and multiple reflection expansion for Robin boundary conditions [PDF]

, 2001
In the presence of a boundary interaction, Neumann boundary conditions should be modified to contain a function S of the boundary fields: (\nabla_N +S)\phi =0.
A. Sen, A. Sen, A.A. Tseytlin, D. V. Vassilevich, D.V. Vassilevich, D.V. Vassilevich, E. M. Santangelo, H. Falomir, I.G. Moss, J.S. Dowker, K. Bardakci, K. Kirsten, L. Randall, L. Randall, M. Bordag, M. Bordag, M. Bordag, M. Bordag, M. Bordag, P. Minces, P. Minces, P.B. Gilkey, R. Balian, R. Balian, R. Balian, S.M. Blinder, S.W. Hawking, T.H. Hansson, T.P. Branson, T.P. Branson, T.P. Branson, V. Mukhanov, V.A. Kostelecky, V.A. Rubakov, W. Kummer, W. Kummer, Y.V. Gusev   +36 more
core   +2 more sources

Sequence determinants of RNA G‐quadruplex unfolding by Arg‐rich regions

FEBS Letters, EarlyView.
We show that Arg‐rich peptides selectively unfold RNA G‐quadruplexes, but not RNA stem‐loops or DNA/RNA duplexes. This length‐dependent activity is inhibited by acidic residues and is conserved among SR and SR‐related proteins (SRSF1, SRSF3, SRSF9, U1‐70K, and U2AF1).
Naiduwadura Ivon Upekala De Silva, Puspa Kunwar, Md Ibnul Rifat Rahman, Joanna Koryo Kwao, Nathan Lehman, Zihan Zhang, Trenton Paul, Claire Cheng, Nicholas Truex, Hui‐Ting Lee, Jun Zhang   +10 more
wiley   +1 more source

Frequency-Domain Finite Element Modeling of Seismic Wave Propagation Under Different Boundary Conditions

Mathematics
Seismic wave propagation in complex terrains, especially in the presence of air layers, plays a crucial role in accurate subsurface imaging. However, the influence of different boundary conditions on seismic wave propagation characteristics has not been ...
Ying Zhang, Haiyang Liu, Shikun Dai, Herui Zhang   +3 more
doaj   +1 more source

Boundary conditions for quadrupolar metamaterials

New Journal of Physics, 2014
One of the long-standing problems in effective medium theories is using the knowledge of the bulk material response to predict the behavior of the electromagnetic fields at the material boundaries.
Mário G Silveirinha
doaj   +1 more source

Conjugate boundary value problems with functional boundary conditions at resonance

Boundary Value Problems, 2019
By constructing a suitable projection scheme and using the coincidence degree theory of Mawhin, we study the existence of solutions for conjugate boundary value problems with functional boundary conditions at resonance with dimKerL=1 $\operatorname{dim ...
Weihua Jiang, Jing Qiu, Bingzhi Sun
doaj   +1 more source

Numerical implementation of isolated horizon boundary conditions [PDF]

, 2006
We study the numerical implementation of a set of boundary conditions derived from the isolated horizon formalism, and which characterize a black hole whose horizon is in quasi-equilibrium.
A. Ashtekar, François Limousin, José Luis Jaramillo, Marcus Ansorg   +3 more
core   +4 more sources

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

FEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li, Pedro A. Sánchez‐Murcia, Bernd Nidetzky   +2 more
wiley   +1 more source

Existence of solutions to Sturm–Liouville boundary value problems

Electronic Journal of Qualitative Theory of Differential Equations
We study the solvability of Sturm–Liouville boundary value problems for $x''=f(t,x,x'), t\in(0,1)$. The nonlinearity can be defined on a bounded set and is required to be continuous on its subset.
Gabriela Mihaylova, Petio Kelevedjiev
doaj   +1 more source

Quantum cavities with alternating boundary conditions

, 2017
We consider the quantum dynamics of a free nonrelativistic particle moving in a cavity and we analyze the effect of a rapid switching between two different boundary conditions.
Facchi, Paolo, Garnero, Giancarlo, Ligabò, Marilena   +2 more
core   +1 more source