In view of disease risk, Kong et al. (2012) demonstrated that most of the new mutations are explained by the age of the father at conception. Accordingly, paternal age effects have been found for a variety of offspring traits, from physical and mental health to intelligence. Here, we investigated whether facial attractiveness is significantly associated with paternal age. We used the Wisconsin Longitudinal Study (n = 4018 male and 4416 female high school graduates) to analyze the association between an individual's father's age at birth and that individual's facial attractiveness (estimated by rating the high school yearbook photographs from 1957), controlling for sex, age as well as mother's age. We find that subject's facial attractiveness decreased with advancing paternal but not maternal age, suggesting that facial attractiveness might be a cue of an individual's new mutation load.
In this paper we describe and characterize a nebulizer “interface” for flame atomic absorption spectroscopy (FAAS). A nebulizer interface should provide for optimum coupling of analytical liquid flow techniques, e.g. flow injection analysis and liquid chromatography, to FAAS instruments. When the interface is used instead of one of the conventional nebulizer systems together with a FAAS instrument, Basket Nike Blazer a 3–5 times better characteristic concentration and detection limit Blazer Nike Pas Cher were obtained for the test element Mn. The interface facilitates the coupling of analytical low-flow rate devices to FAAS instruments and simplifies the optimization of flame stoichiometry. The nebulizer interface provides for complete utilization of the sample (no waste). When the interface is used to connect a high performance Blazer Nike Homme Solde liquid chromatography system to a FAAS instrument, the resulting increase in peak width is approximately 1 s.
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