Capillary absorption spectroscopy for high temporal resolution measurements of stable carbon isotopes in soil and plant-based systems.

Capillary Absorption Spectroscopy (CAS) is a relatively new analytical technique for performing stable isotope analysis. Here, we demonstrate the utility of CAS by recording and quantifying variation in C in controlled and biologically relevant applications. We calibrated CAS system response to increased CO, with an observed ∼4‰ increase in measured ΔC for each 0.

The natural armors of fish: A comparison of the lamination pattern and structure of scales.

Fish scales exhibit a unique balance of flexibility, strength and toughness, which is essential to provide protection without encumbering locomotion. Although the mechanical behavior and structure of this natural armor are of recent interest, a comparison of these qualities from scales of different fish species has not been reported. In this investigation the armor of fish with different locomotion, size and protection needs were analyzed.