With the procedure which is described, brain tissue is separated into six fractions, the sum of whose weights equals the dry weight of the tissue. Three of these primary fractions are further separated into subfractions. Recovery is quantitative at each step. The procedure, as applied to rat brain, gave consistent results; duplicate analyses of the two halves of brains, divided as equally as po...

The precise calibration of relative gravity meters is essential for the accuracy of gravimetric surveys. We show that in the new Zugspitze calibration system established in 2004 – 2005 excellent accuracies of the linear calibration factor of relative gravity meters in the range of 1–2 * 10 can be obtained. The calibration system is particularly useful for the precise calibration of Scintrex lin...

Monitoring the air particulate concentration both outdoors and indoors is becoming a more relevant issue in the past few decades. An innovative, fully automatic, monitoring system called CleAir is presented. Such a system wants to go beyond the traditional technique (gravimetric analysis), allowing for a double monitoring approach: the traditional gravimetric analysis as well as the optical spe...

We propose new isoreticular metal-organic framework (IRMOF) materials to increase the hydrogen storage capacity at room temperature. Based on the potential-energy surface of hydrogen molecules on IRMOF linkers and the interaction energy between hydrogen molecules, we estimate the saturation value of hydrogen sorption capacity at room temperature. We discuss design criteria and propose new IRMOF...

Frequency-domain expressions are found for gradiometer and satellite-to-satellite tracking measurements of a point source on the surface Earth. The maximum signal-to-noise ratio as function noise in measurement apparatus is computed, from that minimum detectable mass inferred. A magnitude M3=100Gt gives 3 when GOCE-like passes directly over mass. On mission GRACE-FO M3=1.3Gt microwave instrumen...