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Articles 1 - 4 of 4
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Litter Breakdown In Mountain Streams Affected By Mine Drainage: Biotic Mediation Of Abiotic Controls, Dev Niyogi, William M. Lewis Jr., Diane M. Mcknight
Litter Breakdown In Mountain Streams Affected By Mine Drainage: Biotic Mediation Of Abiotic Controls, Dev Niyogi, William M. Lewis Jr., Diane M. Mcknight
Biological Sciences Faculty Research & Creative Works
Breakdown of plant litter in streams was studied as an example of a major ecological process subject to change through multiple stresses associated with mine drainage. Rates of litter breakdown were measured at 27 sites in streams of the Rocky Mountains of Colorado, USA. Eight of the sites were pristine, and 19 were affected to varying degrees by mine drainage. The pH, concentrations of dissolved zinc, and deposition rates of metal oxides were measured in each stream. Rates of litter breakdown were estimated from changes in mass of willow leaves in litterbags. Biomass of shredding invertebrates in litterbags was monitored …
The Tem1 Small Gtpase Controls Actomyosin And Septin Dynamics During Cytokinesis, John Lippincott, Katie Shannon, Wenying Shou, Raymond J. Deshaies, Rong Li
The Tem1 Small Gtpase Controls Actomyosin And Septin Dynamics During Cytokinesis, John Lippincott, Katie Shannon, Wenying Shou, Raymond J. Deshaies, Rong Li
Biological Sciences Faculty Research & Creative Works
Cytokinesis in budding yeast involves an actomyosin-based ring which assembles in a multistepped fashion during the cell cycle and constricts during cytokinesis. In this report, we have investigated the structural and regulatory events that occur at the onset of cytokinesis. The septins, which form an hour-glass like structure during early stages of the cell cycle, undergo dynamic rearrangements prior to cell division: the hourglass structure splits into two separate rings. The contractile ring, localized between the septin double rings, immediately undergoes contraction. Septin ring splitting is independent of actomyosin ring contraction as it still occurs in mutants where contraction fails. …
Volume Management In San Environment, Chang-Soo Kim, Gyoung-Bae Kim, Bum-Joo Shin
Volume Management In San Environment, Chang-Soo Kim, Gyoung-Bae Kim, Bum-Joo Shin
Electrical and Computer Engineering Faculty Research & Creative Works
Logical volume managers have long been key components of a storage system. Their key features are creation of logical or virtual views of physical storage devices and support for various software RAID levels. These make it possible to overcome the limits to capacity, availability and performance of a physical storage device. Most logical volume managers are operated in a single system environment. They are not adequate for SAN (storage area network) environments where several hosts share and access a logical volume at the same time. Some recent logical volume managers are run in a multi-host environment. However, they cannot support …
Nerve Injury Induces A Rapid Efflux Of Nitric Oxide (No) Detected With A Novel No Microsensor, Shanta M. Kumar, D. M. Porterfield, Kenneth J. Muller, Peter J.S. Smith, Christie L. Sahley
Nerve Injury Induces A Rapid Efflux Of Nitric Oxide (No) Detected With A Novel No Microsensor, Shanta M. Kumar, D. M. Porterfield, Kenneth J. Muller, Peter J.S. Smith, Christie L. Sahley
Biological Sciences Faculty Research & Creative Works
An early step in repair of the leech CNS is the appearance of endothelial nitric oxide synthase (eNOS) immunoreactivity and NOS activity, but coincident generation of NO at the lesion after injury has not been shown. This is important because NO can regulate microglial cell motility and axon growth. Indirect measurement of NO with the standard citrulline assay demonstrated that NO was generated within 30 min after nerve cord injury. A polarographic NO-selective self-referencing microelectrode that measures NO flux noninvasively was developed to obtain higher spatial and temporal resolution. With this probe, it was possible to demonstrate that immediately after …