Results 41 to 50 of about 368,748 (292)

Modified logistic differential equation of neutral type with time delay

Lietuvos Matematikos Rinkinys, 2003
The following differential equation is considered: N(t) = rN [1 +a( 1 − {N(t)}/K)− {N(t − h) + ρN(t − h)}/K]. The stable periodic solution based on the bifurcation theory of that differential equation is constructed.
Donatas Švitra
doaj   +5 more sources

Existence of nonoscillatory solutions of second-order neutral differential equations

Cumhuriyet Science Journal, 2021
In this study we shall obtain some sufficient conditions for the existence of positive solutions of variable coefficient nonlinear second-order neutral differential equation with distributed deviating arguments. For some different cases of the range of p(
M. Tamer Senel, Bengü Çına
doaj   +1 more source

Bound states of neutral particles in external electric fields [PDF]

, 2000
Neutral fermions of spin $\frac 12$ with magnetic moment can interact with electromagnetic fields through nonminimal coupling. The Dirac--Pauli equation for such a fermion coupled to a spherically symmetric or central electric field can be reduced to two
A.J. Niemi, A.J. Niemi, A.N. Redlich, A.N. Redlich, A.P. Polychronakos, A.S. Goldhaber, C. Cimmino, I.S. Gradshteyn, L.I. Schiff, Q.-G. Lin, Qiong-gui Lin, R. Jackiw, T.H. Boyer, V.G. Bagrov, W. Pauli, Y. Aharonov, Y. Aharonov, Y. Aharonov   +17 more
core   +2 more sources

Tau acetylation at K331 has limited impact on tau pathology in vivo

FEBS Letters, EarlyView.
We mapped tau post‐translational modifications in humanized MAPT knock‐in mice and in amyloid‐bearing double knock‐in mice. Acetylation within the repeat domain, particularly around K331, showed modest increases under amyloid pathology. To test functional relevance, we generated MAPTK331Q knock‐in mice.
Shoko Hashimoto, Yukio Matsuba, Mika Takahashi, Takaomi C. Saido   +3 more
wiley   +1 more source

Oscillatory behavior of second-order nonlinear neutral differential equations

Advances in Difference Equations, 2020
We shall consider a class of second-order nonlinear neutral differential equations. Some new oscillation criteria are established by using the Riccati transformation technique. One example is given to show the applicability of the main results.
Jun Liu, Xi Liu, Yuanhong Yu
doaj   +1 more source

Control of unstable steady states in neutral time-delayed systems

, 2008
We present an analysis of time-delayed feedback control used to stabilize an unstable steady state of a neutral delay differential equation. Stability of the controlled system is addressed by studying the eigenvalue spectrum of a corresponding ...
Blyuss, K. B., Hoevel, P., Kyrychko, Y. N., Schoell, E.   +3 more
core   +2 more sources

Crucial parameters for precise copy number variation detection in formalin‐fixed paraffin‐embedded solid cancer samples

Molecular Oncology, EarlyView.
This study shows that copy number variations (CNVs) can be reliably detected in formalin‐fixed paraffin‐embedded (FFPE) solid cancer samples using ultra‐low‐pass whole‐genome sequencing, provided that key (pre)‐analytical parameters are optimized.
Hanne Goris, Vasiliki Siozopoulou, Léon C van Kempen, Anne Sieben, Ella Roelant, Stig Hellemans, Elyne Backx, Laure Sorber, Koen De Winne, Senada Koljenović, Karen Zwaenepoel   +10 more
wiley   +1 more source

On the oscillation of neutral differential equations

Journal of Mathematical Analysis and Applications, 1992
Using the method of the Laplace transform it is shown that all solutions of the neutral differential equation \[ {d\over dt}\left[x(t)+\delta\int^{\tau_ 2}_{\tau_ 1}x(t+s)d\mu(s)\right]+\int^{\sigma_ 2}_ {\sigma_ 1}x(t+s)d\eta(s)=0 \] are oscillatory if and only if the characteristic equation \[ \lambda\left[1+\delta\int^{\tau_ 2}_{\tau_ 1}e^{\lambda s}
Philos, C. G., Sficas, Y. G.
openaire   +3 more sources

Colorectal cancer‐derived FGF19 is a metabolically active serum biomarker that exerts enteroendocrine effects on mouse liver

Molecular Oncology, EarlyView.
Meta‐transcriptome analysis identified FGF19 as a peptide enteroendocrine hormone associated with colorectal cancer prognosis. In vivo xenograft models showed release of FGF19 into the blood at levels that correlated with tumor volumes. Tumoral‐FGF19 altered murine liver metabolism through FGFR4, thereby reducing bile acid synthesis and increasing ...
Jordan M. Beardsley, Michael W. Rohr, Joseph A. Goode, Sai Preethi Nakkina, Jignesh G. Parikh, Deborah A. Altomare   +5 more
wiley   +1 more source

Coupling nonpolar and polar solvation free energies in implicit solvent models [PDF]

, 2006
Recent studies on the solvation of atomistic and nanoscale solutes indicate that a strong coupling exists between the hydrophobic, dispersion, and electrostatic contributions to the solvation free energy, a facet not considered in current implicit ...
Frankel T., Helfrich W., Henderson J. R., J. A. McCammon, J. Dzubiella, J. M. J. Swanson, Jackson J. D., Kralchevsky P., Reiss H., Safran S. A., Sethian J. A.   +10 more
core   +1 more source