BACKGROUND The increasing complexity of articulating spinal implants prohibits the use of serum-supplemented simulator fluid testing because multicomponent interfaces retain residual protein and preclude gravimetric measurement. Our original hypothesis was that simulator testing of a posterior dynamic stabilization implant that has metal-on-metal articulating bearings will not produce dramatica...

one of the most valuable and important application of artificial satellites in geodetic sciences is recovery of the earth's gravity field. orbits of satellites either gravimetric or nongravimetric are analyzed to improve the earth's gravity field. gravimetric satellites are launched at low altitudes to observe gravity field in more detail. grace twin satellites are the second spacecra...

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...

THE method employed for the determination of silica in tissues and body fluids must depend on the amount and nature of the silica present. For tissues such as the lungs of workers in dusty atmospheres, where a great deal of mineral matter may be present, the ordinary gravimetric procedures are applicable. In the case of normal tissues of low silica content a micro-gravimetric method is suitable...

Abstract This paper studies the contribution of airborne gravity data to improvement gravimetric geoid modelling across mountainous area in Colorado, USA. First, was processed, filtered, and downward-continued. Then, three anomaly grids were prepared; first grid only from terrestrial data, second downward-continued third combined data. Gravimetric models with determined using least-squares modi...

superior speed and simplicity with little sacrifice in accuracy and precision. Phenytoin sodium (DPH) forms phenytoin silver collosol quantitatively with silver nitrate solution. The reaction between phenytoin sodium and silver nitrate reveals a 1 : 1 molar ratio as illustrated in Chart 1. However, there was no accurate method available to determine the titration end-point. Therefore, gravimetr...

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...