Most researchers assume minimal impact of pretreatment on strontium isotope ratios ( 87 Sr/ 86 Sr) for bones and teeth, methods vary tremendously. We compared 14 methods, including no prep other than powdering enamel, ashing, soaking in water, an oxidizing agent (bleach or hydrogen peroxide) acetic acid (0.1 M, 1.0 M buffered with calcium acetate), a combination these steps. prepared analyzed a...

A probabilistic approach to estimating sample qualities of stochastic differential equations is introduced in this paper. The aim provide a quantitative upper bound the distance between th...

The periodogram is a widely used tool to analyze second order stationary time series. An attractive feature of the that expectation approximately equal underlying spectral density However, this only an approximation, and it well known has finite sample bias, which can be severe in small samples. In article, we show bias arises because boundary observation one discrete Fourier transforms constru...