Results 71 to 80 of about 13,060 (202)
Extracellular Vesicle Lipids and Their Role in Delivery
Journal of Extracellular Biology, Volume 4, Issue 6, June 2025.ABSTRACT Small extracellular vesicles (sEVs) possess many advantageous characteristics which highlight their potential as nanocarriers for biomedical applications, including the ability to cross the blood brain barrier, improved biocompatibility and exhibit tissue tropism.
Austin Brent +2 more
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Communications on Pure and Applied Mathematics, Volume 78, Issue 3, Page 545-591, March 2025.Abstract While there are numerous results on minimizers or stable solutions of the Bernoulli problem proving regularity of the free boundary and analyzing singularities, much less is known about critical points of the corresponding energy. Saddle points of the energy (or of closely related energies) and solutions of the corresponding time‐dependent ...
Dennis Kriventsov, Georg S. Weiss
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Acute and non‐acute decompensation of liver cirrhosis
Liver International, Volume 45, Issue 3, March 2025.Abstract In the traditional view, the occurrence of cirrhosis‐related complications, such as hepatic encephalopathy, formation of ascites or variceal haemorrhage, marks the transition to the decompensated stage of cirrhosis. Although the dichotomous stratification into a compensated and decompensated state reflects a prognostic water‐shed moment and ...
Martin S. McCoy +2 more
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Septic B-spline method for second order self-adjoint singularly perturbed boundary-value problems
Ain Shams Engineering Journal, 2018 In the present paper, we develop a septic B-spline method for solving a self-adjoint singularly perturbed two-point boundary value problem. This method is applied directly to the numerical solution of the problems without reducing its order.
Ram Kishun Lodhi, Hradyesh Kumar Mishra
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Oxford Bulletin of Economics and Statistics, Volume 87, Issue 1, Page 155-184, February 2025.This paper analyzes the export volatility sources estimating a dynamic factor model on transaction‐level data. Utilizing an exhaustive dataset of French export transactions from 1993 to 2017, we reconstruct the latent factors space associated with global and destination‐specific macroeconomic shocks through a Quasi‐Maximum likelihood approach which ...
Matteo Barigozzi +3 more
wiley +1 more source
Singularly perturbed boundary value problems
Differential and Integral Equations, 1994 The author considers the system \(-\varepsilon^ 2 u''+g_ 1 (u,v,x,\varepsilon) =0\), \(v''+g_ 2(u,v,x,\varepsilon)=0\), \(v(0)=v(1)=u(0)=u(1)=0\), \(x \in[0,1]\), \(\varepsilon \neq 0\), where \(g_ 1\), \(g_ 2\) are continuous functions specially choosen by the author, \(\varepsilon\) is a small parameter.
openaire +3 more sources
A Multiparameter Singular Perturbation Analysis of the Robertson Model
Studies in Applied Mathematics, Volume 154, Issue 2, February 2025.ABSTRACT The Robertson model describing a chemical reaction involving three reactants is one of the classical examples of stiffness in ODEs. The stiffness is caused by the occurrence of three reaction rates k1,k2,${k}_{1},{k}_{2},$ and k3,${k}_{3},$ with largely differing orders of magnitude, acting as parameters.
Lukas Baumgartner, Peter Szmolyan
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Singularly Perturbed Dirichlet Problems With Subquadratic Nonlinearities [PDF]
Transactions of the American Mathematical Society, 1987 Boundary and interior layer theory is provided for a class of singularly perturbed Dirichlet problems with subquadratic nonlinearities in the derivative terms. The results obtained generalize and extend well-known results on the semilinear problem.
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Adaptation of Archaeal Communities to Summer Hypoxia in the Sediment of Bohai Sea
Ecology and Evolution, Volume 15, Issue 1, January 2025.The spatial–temporal variation of DO leads to distinct switches in community composition and abundance of archaea. Diversity of archaea communities increased significantly with the intensity of oxygen depletion. Specific nitrogen transformation enzymes encoded by archaea ensure the balance of N budget in hypoxia zone of Bohai Sea.
Xiaoxiao Guo +4 more
wiley +1 more source
Asymptotic Estimates of the Solution of a Restoration Problem with an Initial Jump
Journal of Applied Mathematics, 2014 The asymptotic behavior of the solution of the singularly perturbed boundary value problem Lεy=htλ,Liy+σiλ=ai,i=1,n+1̅ is examined. The derivations prove that a unique pair (ỹt,λ̃ε,ε,λ̃ε) exists, in which components y(t,λ̃ε,ε) and λ̃(ε) satisfy the ...
Duisebek Nurgabyl
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