We present a modification of the HemoQuant assay, a good but lengthy and tedious method for determining heme in feces by means of its transformation to porphyrins. The laborious extraction procedure was replaced by a simple centrifugation procedure. The nonhomogeneous hot oxalic acid suspension was replaced by acetic acid. We observed no significant difference in results between samples analyze...

Oxygen and hydrogen isotope composition of neoformed clay minerals is commonly used as a palaeoclimatic proxy. Usually, sediments rocks (including palaeosols) contain not only minerals, but also detrital and/or diagenetic ones. Together with the usually small size (micro- or nanometric) in these materials, this can generate difficulties during isotopic analyses by conventional spectrometry. To ...

By varying the sound-absorption treatments in a simulated classroom, experimental results were compared with analytical and computer predictions of reverberation time. Analytical predictions were made with different absorption exponents, which are the result of different weighting procedures involving room surface areas and the sound-absorption coefficients. Sound scattering was found to influe...

Here, we present an analytical procedure to extract the anisotropy constants of antiferroelectric (AFE) materials from a few key features experimental polarization versus field curves. Our approach is validated for two datasets ZrO $_\text{2}$ </inline...

An adaptive procedure is introduced to construct smooth analytical profiles of the free energy along a reaction coordinate using sampled data from multiple biased simulations. The procedure is based upon identifying problematic regions encountered in maximum likelihood estimators of the profile where there are statistically relevant discrepancies between the empirical and parametrized cumulativ...