منابع مشابه
Downstream variations in the width of bedrock channels
Field surveys of channel width w and drainage area A in bedrock channel reaches reveal relationships where w 5 cA, similar to the classic hydraulic geometry of alluvial channels. Data from five mountain channel networks support the assumption used in many landscape evolution models that an alluvial hydraulic geometry relationship where b 5 0.3–0.5 holds for bedrock channel systems. Although the...
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Natural bedrock rivers flow in self-formed channels and form diverse erosional morphologies. The parameters that collectively define channel morphology (e.g. width, slope, bed roughness, bedrock exposure, sediment size distribution) all influence river incision rates and dynamically adjust in poorly understood ways to imposed fluid and sediment fluxes. To explore the mechanics of river incision...
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Homologues of Drosophila trp genes have been isolated from mammalian species in hope that they may constitute the molecular basis of capacitative Ca(2+) entry. Expression of Trps suggests that they form Ca(2+) influx channels regulated by either store depletion or a more upstream event. Store-operated Trp channels can be formed by heteromultimerization.
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Cytotoxic peptides are relatively small cationic molecules such as those found 1) in venoms, e.g., melittin in bee, scorpion toxins in scorpion, pilosulin 1 in jumper ant, and lycotoxin I and II in wolf spider; 2) in skin secretions (e.g., magainin I and II from Xenopus laevis, dermaseptin from frog, antimicrobials from carp) and cells of the immune system (e.g., insect, scorpion, and mammalian...
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, 369 (1997); 275 Science et al. Alexander L. Densmore, Hillslope Evolution by Bedrock Landslides www.sciencemag.org (this information is current as of September 3, 2008 ): The following resources related to this article are available online at http://www.sciencemag.org/cgi/content/full/275/5298/369 version of this article at: including high-resolution figures, can be found in the online Update...
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ژورنال
عنوان ژورنال: Geophysical Research Letters
سال: 2006
ISSN: 0094-8276
DOI: 10.1029/2006gl027182