The determination of radiation contamination was analyzed in the case of fast neutrons action on chromatin the complex of deoxyribonuclec acid (DNA) with proteins, that exists in eukaryotic cells nuclei. The effects produced by fast neutrons (0-100 Gy) on chromatin structure were analyzed by (1) H-NMR spectroscopy, (2) steady-state fluorescence, (3) time resolved fluorimetry and (4) fluorescenc...

Basic research necessary for the development of advanced methods for clinical chemistry are reviewed. It is concluded that a new class of fast analyzers are required which are inherently adapted to computer data reduction. A new analytical system using centrifugal force to transfer and mix fluids in a multiple-cuvet rotor yields data signals at intervals of 3.3 milliseconds. It is applicable to...

This technical note illustrates that some of the differences that have been reported regarding wheelchair propulsion may be due to the methods used to calculate key variables. Wheelchair ambulation is a very important form of locomotion that lacks a standard pushrim force and moment analysis system. We have developed tools for analyzing upper limb biomechanics during manual wheelchair propulsio...

Schillings, Maartje L., Dick F. Stegeman, and Machiel J. Zwarts. Determining central activation failure and peripheral fatigue in the course of sustained maximal voluntary contractions: a modelbased approach. J Appl Physiol 98: 2292–2297, 2005. First published February 10, 2005; doi:10.1152/japplphysiol.01342.2004.—In the study of fatigue, several methods have been used to calculate the develop...

Numerical simulations of extereme mass ratio inspirals, the mostimportant sources for LISA detector, face several computational challenges. We present a new approach to evolving partial differential equations occurring in black hole perturbation theory and calculations self-force acting on point particles orbiting supermassive holes. Such are distributionally sourced, standard numerical methods...

Abstract. To simulate transient wind turbine wake interaction problems using limited data, two new variants of the actuator line technique are proposed in which rotor blade forces computed locally generic load data. The models, extensions disk force models by Navarro Diaz et al. (2019a) and Sørensen (2020), only demand thrust power coefficients tip speed ratio as input parameters. In paper anal...