Results are presented from an NMKL (Nordic Committee on Food Analysis) collaborative study of a method for the determination of cholecalciferol (vitamin D3) in foods. The method is based on the addition of an internal standard (vitamin D2), followed by saponification and extraction with n-heptane. The fraction that contains vitamin D2/D3 is separated by preparative normal-phase liquid chromatog...

The paper considers studying influence of a human-oriented info-imprinting on a work function of carriers of the imprinted information – metallic matrixes. The matrix-imprinted information proved its efficiency in a reduction of a thermal impact of a radiation of mobile phones, to which the matrixes were attached. Seebeck effect and Kelvin Probe installations were used and modified for the rese...

An easy to apply multi-criteria technique is the Matrixes Of Weighing (MOW), but many of the professionals that use it, in their respective fields, do it in intuitive fashion. In this regard, applications are rarely reported in specialized literature, which explains how few references exist about them. One of the application areas for MOW is the handling of catastrophes, in particular the pre-c...

This article makes use of simultaneous decomposition four quaternion matrixes to investigate some Sylvester-like matrix equation systems. We present useful necessary and sufficient conditions for the consistency system equations in terms equivalence form block matrixes. also derive general solution according partition coefficient As an application system, we practical a ϕ-Hermitian provide when...

For many, especially complex, systems, modern spectroscopic measurements can be generated as large experimental data sets in matrix form. We report a new algorithm for the application of matrix rank analysis to extract significant experimental information from these large matrixes. The algorithm may be used to detect and remove erroneous rows and/or columns from the matrixes and to monitor the ...

We computed the atomic shift sizes of closest adjacent atoms adjoining (001) surface F-center at ABO3 perovskites. They are significantly larger than bulk F-center. In perovskite matrixes, electron charge is stronger confined in interior oxygen vacancy vacancy. The formation energy on smaller bulk. This microscopic distinction stimulates segregation from to their surfaces. created defect level ...

This paper presents an adaptive cross-layer resource allocation problem with the fairness in multi-user OFDMMISO communication systems, and provides two solutions with Hopfield Neural Network (HNN) and Genetic Algorithm (GA) for the problem. We utilized HNN’s characteristics such as parallel processing, fast convergence speed and easy convergence to the optimum, to solve this problem under the ...