Back-scattered electron detector
Top view of specimen
Compositional and topographic
imaging with BSE
Specimen electrons mobilized by electron
beam through inelastic scattering
Biogeochemical cycling in anoxic sediments
Consortia of bacteria are needed to degrade
Complex organic mater
Waste products of one bacteria serve as the substrate for another
Major reactions are fermetation, sulfate reduction, and methanogenesis
These are normal values of physiological parameters for a 70 kg person.
Rrs (respiratory system R)
Q s /Q T (Shunt fraction)
Q T (cardiac output)
PaO2 (at room air)
( A a)D O2
Hb O2 Binding
7.29 J 9.09
Answers to 2009 Midterm Test
(a) Gene for NMDA receptor subunit knocked out selectively in hippocampus
No LTP in hippocampal region CA1, no water-maze learning by mouse.
(b) Yeast secretory mutants identify g
Thanks: Eric Olson
"Woe to the child who tastes salty
from a kiss on the brow, for he is
cursed and soon must die.
- Swiss Almanac of Childrens Songs and Games (1857),
repeating folk wisdom handed down since the Middle Ages
Crystallography: Strengths and Weaknesses
Complete 3D structure with almost no assumptions.
No size limitations (M > 107)
You need a crystal.
Average over space and time (no dynamics).
Esp. for very large molecules: resol