Elements: trace ; Partition coefficients ; Trace element partitioning modelsAnalysis: field methods; Analytical geochemistry; Atomic absorption; Compound-specific isotope GC-MS ; Counters ; Differential thermal analysis and scanning calorimetry ; Electron microprobe ; Gas chromatography mass spectrometry (...
Atomic weight is expressed using grams/mol or atomic mass units (u) while atomic mass is quantified using atomic mass units (u). Accurate values of atomic weights of all the elements are given in Table A.4 in Appendix A. If an element has a nonnatural abundance of its isotopes (i.e....
of that atom. This unit is the basis for determining the relative atomic weight for all other elements. A hydrogen atom is assigned an atomic weight of 1 (rounded from 1.008) because the mass of a hydrogen atom is roughly equal to 1/12th the mass of a ...
Facilitated transport rates can reach ~1000 translocation events or a mass flow of 100 MDa per NPC per second6, and NPC passage of a single molecule is usually completed within milliseconds to tens of milliseconds7,8,9, even for ribosomal subunits10. In fact, passage through the NPC barrier...
A launch laser or mass driver powerful enough to boost huge masses into orbit can smash a combat starship like a sledge-hammer hitting a cockaroach. If there is a planetary disaster, spaceports will suddenly be thrust into the role of operational center. After all, it will be the source ...
Alpha : (kg/kW) power plant mass in kilograms divided by kilowatts of power. So if a solar power array had an alpha of 90, and you needed 150 kilowatts of output, the array would mass 90 * 150 = 13,500 kg or 13.5 metric tons Specific Power : (W/kg) watts of power divided by...
Galactic a galaxy, most or all of its stars, up to all mass associated with it. Universal the entire universe, all or most galaxies within it, or all major galaxy filaments or equivalent highest-level structures. Multiversal multiple universes, or whatever that exists outside of the setting'...
noted this and postulated space-opera science that required elements in the middle of the periodic table for direct conversion of all the mass into energy. In Doc Smith's "Skylark" series the element was copper (63 nucleons) and in John Campbell's The Space Beyond the element was iron (...
Space pirates need infrastructure (fences for pirated loot, fuel and reaction mass, ship repairs, R&R for the crew). A hidden planetary base can act as a Pirate Haven and cater to these needs. Planetary Defense Armed military station defending its planet from outside attack, planetary fortress...
Giarratana, Salvatore Masselle Francis Conant John A. L. K. Claims: What is claimed is 1. In a hollow tubular, electrically conducting sample accommodating and heating device for flameless atomic absorption spectrophotometry of the type in which heating current is passed through the tube by electr...