Results 81 to 90 of about 1,307,940 (306)

Dietary Protein Intake and Peritoneal Protein Losses in Peritoneal Dialysis Patients

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Introduction Peritoneal dialysis (PD) patients lose protein in their waste dialysate, potentially increasing their risk for malnutrition. We wished to determine whether there was any association between losses and dietary protein intake (DPI). Methods DPI was assessed from 24‐h dietary recall using Nutrics software.
Haalah Shaaker, Andrew Davenport
wiley   +1 more source

Numerical integration by the matrix method and evaluation of the approximation order of difference boundary value problems for non-homogeneous linear ordinary differential equations of the fourth order with variable coefficients

Vestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2020
The use of the second degree Taylor polynomial in approximation of derivatives by finite difference method leads to the second order approximation of the traditional grid method for numerical integration of boundary value problems for non-homogeneous ...
Vladimir Nikolaevich Maklakov, Mariya Aleksandrovna Ilicheva   +1 more
doaj   +1 more source

Mapping the evolution of mitochondrial complex I through structural variation

FEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin, Tingting Chen, James A. Letts   +2 more
wiley   +1 more source

Spatiotemporal and quantitative analyses of phosphoinositides – fluorescent probe—and mass spectrometry‐based approaches

FEBS Letters, EarlyView.
Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho, Shin Morioka, Junko Sasaki, Takehiko Sasaki   +3 more
wiley   +1 more source

On the degree of approximation by Gauss Weierstrass integrals

International Journal of Mathematics and Mathematical Sciences, 2000
We obtain the degree of approximation of functions belonging to class Lip(ψ(u,v);p),   p>1 using the Gauss Weierstrass integral of the double Fourier series of f(x,y).
Huzoor H. Khan, Govind Ram
doaj   +1 more source

On the degree of approximation of functions by Fejér means

, 1945
1. Continuous functions. I t has been proved by S. Bernstein that if f(x) is periodic and of the class Lip a, 0 < a < l , then the (C, 1) means an(x) =
A. Zygmund
semanticscholar   +1 more source

The degree of approximation by polynomials on some disjoint intervals in the complex plane

Journal of Approximation Theory, 2007
Let f(z) be a continuous function defined on the compact set K@?C and let E"n(f)=E"n(f,K) be the degree of approximation to f, for the supremum norm on K, by polynomials of degree (at most) n.
M. Hasson
semanticscholar   +1 more source

In situ molecular organization and heterogeneity of the Legionella Dot/Icm T4SS

FEBS Letters, EarlyView.
We present a nearly complete in situ model of the Legionella Dot/Icm type IV secretion system, revealing its central secretion channel and identifying new components. Using cryo‐electron tomography with AI‐based modeling, our work highlights the structure, variability, and mechanism of this complex nanomachine, advancing understanding of bacterial ...
Przemysław Dutka, Yuxi Liu, Stefano Maggi, Debnath Ghosal, Jue Wang, Prashant P. Damke, Stephen D. Carter, Wei Zhao, Sukhithasri Vijayrajratnam, Joseph P. Vogel, Carrie L. Shaffer, Grant J. Jensen   +11 more
wiley   +1 more source

Trace Finite Element Methods for Surface Vector-Laplace Equations

, 2019
In this paper we analyze a class of trace finite element methods (TraceFEM) for the discretization of vector-Laplace equations. A key issue in the finite element discretization of such problems is the treatment of the constraint that the unknown vector ...
Jankuhn, Thomas, Reusken, Arnold
core  

Approximations of degree zero in the Poisson problem

Communications on Pure and Applied Analysis, 2005
The authors consider an open bounded set \(\Omega \subset \mathbb{R}^2\) with smooth enough boundary \(\partial \Omega\) in which \(\partial_u \) is a relatively open portion. Let \(H_{\partial u}^1(\Omega)\) be the set of \(H^1(\Omega)\)-functions that vanish on \(\partial u\). Furthermore, let \(f\) be in the dual of \(H_{\partial u}^1(\Omega)\). The
DAVINI, Cesare, JOURDAN F.
openaire   +2 more sources