For Saturn

The 5-aminolaevulinate dehydratase (or porphobilinogen synthase), which catalyses the condensation of two molecules of 5-aminolaevulinate to form the pyrrole precursor of the porphyrins (haem, chlorophyll, cobalamines), has the motif [(Cys)3 Zn2+-OH2]. As pointed out earlier (see Chapter 1), this enzyme is the target for saturnism, the Pb toxicity frequently observed among inner city children. 

To the accuracy of the measurement of molecular weights for the giant planets, only hydrogen and helium have significant abundances. The relative proportions of these elements, expressed as the molar fraction He/H, are 0.068+0.002 for Jupiter, 0.068+0.013 for Saturn, 0.076+0.016 for Uranus, and 0.100+0.016 for Neptune (Lunine, 2004). None of these ratios are like those of the nebula (0.085, Table 4.1). 

For Saturn, Uranus, and Neptune, the habitable zone is broader relative to the planetary radius. On Saturn, the temperature is about 300 K when dihydrogen becomes supercritical. On Uranus and Neptune, the temperature when dihydrogen becomes supercritical is only 160 K, a temperature at which organic molecules are stable. 

For Saturn versus Jupiter the story is a bit clearer. Models of the interior and evolution of Jupiter (described further below) produce the currently observed effective temperature with only sunlight and the original virialized energy of collapse no additional differentiation is required at present. However, in the case of Saturn, additional energy is required to obtain a body of its effective temperature and mass at an age of 4.56 Gyr, implying that differentiation is... 

What are the detailed internal structures of the giant planets and how are the magnetic fields generated While the separation of helium from hydrogen seems to be assured for Saturn, it is unclear to what extent this occurs in Jupiter. Further, the distribution of elements heavier than hydrogen and helium remains unclear in Jupiter and Saturn, in part because of equation-of-state uncertainties. The interiors of Uranus and Nepmne are even less certain. For these reasons, and because of uncertainties in dynamo theory, the specific details of the magnetic field... 

Although lapetus extreme hemispheric albedo contrast has been recognized essentially from the time of its discovery, the nature and origin of the dark material that dominates the leading hemisphere is still uncertain. Spectrally, the dark material resembles some low-albedo, red asteroids. This material is believed to be similar to hydrocarbon-rich materials produced in laboratory experiments, known as tholins, which are opaque, contain PAHs and are spectrally red (Cmikshank et al., 1991). Tholins are also candidates for at least some of the dark, non-ice constituents on Ganymede and Callisto. Unfortunately, spectra in the 3-5 p,m region where these material have some spectral features are not yet available for Saturn satellites. 

In addition to his discovery of the Martian satellites. Hall determined the period of rotation for Saturn, the orbits of Saturn s satellites, and the properties of a number of double stars. He was awarded the Gold Medal of the Royal Astronomical Society of London for his contributions to astronomy and was awarded honorary doctoral degrees by Hamilton College in New York State, Yale University, and Harvard University. He was elected a member of the National Academy of Sciences in 1875. 

The composition of the outer planets is also very different from that of the inner planets. Mercury, Venus, Earth, and Mars are all made of rocky-like material with a density of about 5.5 g/cm3. By contrast, the outer planets seem to consist largely of gases (which accounts for their sometimes being called the gas giants) with densities of about 0.69 g/cm3 for Saturn to 1.54 g/cm3 for Neptune. These... 

Dexron III (H) Dexron III/Saturn Dexron VI Released in 2003 improved version of Dexron III Specialty ATF for Saturn products Released in 2006 for 6L80 6 speed RWD transmission compatible with 2005 transmissions with Dexron III not recommended for older transmissions... 

Abuelsamid, S. December6,2006. Cobasys providing NiMH batteries for Saturn Aura hybrid. Autobloggreen.com/2006/12/05/cobasys-providing-nimh-batteries-for-Satum-Aura-hybrid/... 

The four giant planets have hydrogen- and helium-rich compositions reminiscent of the Sun, but all of them clearly depart from strict solar composition in that their densities are too high and the few heavier elements whose tropospheric abundances can be measured all show clear evidence of enrichment. For all four giant planets we have spectroscopic compositional data on the few compounds that remain uncondensed in the visible portion of their atmospheres, above their main cloud layers. These include ammonia, methane, phosphine, and germane. For Jupiter, these volatile elements (C, N, S, P and Ge) are enriched relative to their solar abundances by about a factor of five. For Saturn, with no detection of germane, the enhancement of C, N, and P is about a factor of 10. For Uranus and Neptune the methane enrichment factor is at least 60, consonant with their much higher uncompressed densities. 

The Galileo probe results also prompted a reevaluation of the Saturn He data from Voyager (Conrath and Gautier 2000). The revised He abundance for Saturn is Yg = 0.18-... 

The observations were obtained in 1980 with the spectropolarimeter attached to the 24-in telescope of the University of Hawaii on Mauna Kea. These observations provide useful constraints for the more sophisticated models that are needed for the atmospheres of these planets. Fig. 3 demonstrates the results for Saturn. 

The usual part-procurement process for Saturn is as follows [18] If the part was out of stock at the retailer, the order would go to a pooling group, consisting of nearby retailers who may be able to supply the part from their inventory. If the pooling group cannot supply the part it would be ordered from the DC or from the supplier. Inventory at stocking locations would be visible in real time to all entities to determine part availabihty with all costs of part transfers borne by Saturn. The stocking and replenishment decisions at locations would be revised based on daily sales data by location. 

Jupiter s big family of moons holds tantalizing liquid flows. Europa and Ganymede both have liquid oceans hidden in darkness under miles of ice. Likewise for Saturn s moon Enceladus, which is warmed by underwater vents like those suspected in the origins of Earth-life. Jupiter itself has supercritical helium and hydrogen deep inside. After the disappointingly dry rocky planets near Earth, the gas-giant moons seem like veritable oceans of possibility. 

The theoretical models are fairly successful in reproducing Voyager data for Jupiter (McConnell and Majeed 1987, Cravens 1987), but less so for Saturn, In part because there appear to occur large variations In the electron density profiles (Atreya et al. 1984). 

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