Buscar
Mostrando ítems 1-10 de 6818
Mathematical formulation of a new linear surface element for the modeling of axisymmetric magnetic field problems
(IOS Press, 2019-09)
There are currently two main trends in solving magnetic field problems, numerical methods, of which the Finite Element Method (FEM) is undoubtedly the most popular, and analytical methods, of which there is a great diversity ...
A new numerical method for stiff differential equations
(Planta Piloto de Ingeniería Química, 2009-12)
A new class of multistep methods for stiff ordinary differential equations is presented. The method is based in the application of estimation functions for the derivatives and the state variables, allowing the transformation ...
New analytical method for determination of phthalates in wastewater by on line lc-gc-ms using the totad interface and fraction collector
(MDPI AG, 2021-06)
There is an increasing demand for automatic, reliable and sensitive analytical methods for determining trace levels of phthalic acid esters (PAEs) in environmental samples. While on line coupled liquid chromatography-gas ...
A new method to design compliant mechanisms based on the inverse beam finite element model
(Elsevier, 2013-02)
The motivation of this work is to introduce the inverse finite element method (IFEM) as a new method for the design of compliant mechanisms that must fit a prescribed shape after undergoing large elastic deformations under ...
A new method to find the potential center of N-body systems
(Universidad Nacional Autónoma de México. Instituto de Astronomía, 2002-09)
We present a new and fast method to nd the potential center of an N-body
distribution. The method uses an iterative algorithm which exploits the fact that
the gradient of the potential is null at its center: it uses a ...
A new method for gridding passive microwave data with mixed measurements and spatial correlation
(Springer, 2020-09)
In this article we develop a new method to grid passive microwave data in the presence of spatial correlation patterns. Our proposal combines a Tychonov inverse method with a generalized cross validation procedure to grid ...
A new flow UV–Vis kinetics spectrophotometric method based on a photodegradative reaction for determining the oxidative stability of biodiesel
(Elsevier, 2020-02-15)
The biodiesel (BD) is an alternative fuel with some remarkable advantages compared to conventional diesel. However, the fatty acid methyl esters (FAMEs) which commonly compose BD are potentially oxidizable. This inherent ...
A new and consistent parameter for measuring the quality of multivariate analytical methods: Generalized analytical sensitivity
(Elsevier Science, 2016-08)
Generalized analytical sensitivity (γ) is proposed as a new figure of merit, which can be estimated from a multivariate calibration data set. It can be confidently applied to compare different calibration methodologies, ...
A new method for estimating the EFV distillation curve
(Taylor, 2009-02)
This work presents a new method to estimate the equilibrium flash vaporization (EFV) distillation curve from standard laboratory analytical assay procedures. In this method, experimental data are utilized by a chemical ...