O nce you get to Swanton Pacific Ranch in the coastal mountains north of Santa Cruz, it's pretty obvious the 3,200-acre spread offers many things you just won't find at Cal Poly: trees, for one thing. A whole forest full of them 2,100 acres to be exact. They cover steep mountain slopes and march in tall columns down to grassy meadows. A river runs through it: Scott Creek and its tributaries. "T...

It is well known that the mass function for halos in CDM cosmology is a relatively steep power law (n(M) ∝ M) for low masses, possibly too steep to be consistent with observations. But how steep is the galaxy mass function? We have analyzed the stellar and gas mass functions of the first massive luminous objects formed in a ΛCDM universe, as calculated in the numerical simulation described in G...

The newly discovered z=5.8 quasar SDSSp J104433.04-012502.2 was recently detected in X-rays and found to be extremely X-ray weak. Here we present the hardness ratio analysis of the XMM-Newton observation. We consider various models to explain the detection in the soft X-ray band and non-detection in the hard band, together with its X-ray weakness. We show that the source may have a steep power-...

Large in situ measured ship-induced depression waves (Bernoulli wakes) in the Malamocco–Marghera industrial channel of the Venice Lagoon are interpreted as long-living strongly nonlinear Riemann (simple) waves of depression. The properties of these depressions are numerically replicated using nonlinear shallow water theory and the CLAWPACK software. The further behaviour of measured depressions...

Ran’s downhill slide during mitosis H asegawa et al. clarify the role of RanGTP in the formation of the mitotic spindle. Because RanGTP is prevalent in the cell, its job during spindle assembly has been difficult to nail down. One possibility is that RanGTP promotes construction of the spindle by liberating spindle assembly factors from the importins that carry them. Previous studies of Xenopus...