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Full-Text Articles in Life Sciences
In Situ Of Interferon On Human Glioma Protein Kinase C-Α And -Β Ultrastructural Localization, Mildred Acevedo-Duncan, John Collins, Ruonana Zhang, Edward M. Haller, Charles E. Chalfant, Denise R. Cooper
In Situ Of Interferon On Human Glioma Protein Kinase C-Α And -Β Ultrastructural Localization, Mildred Acevedo-Duncan, John Collins, Ruonana Zhang, Edward M. Haller, Charles E. Chalfant, Denise R. Cooper
Integrative Biology Faculty and Staff Publications
Transmission electron microscopy was used to determine how immunogold labeling of PKC-alpha or -beta is modulated by the antitumor drug IFN (HuIFN alpha-2b) in the cytoplasm, membrane structures, and nucleus of rapidly dividing and confluent human glioma U-373 cells. Results showed that except for nuclear localization, there were no specific cytoplasmic organelles that PKC-alpha or -beta translocated to following HuIFN alpha-2b treatment. Electron micrographs of PKC-beta in proliferating cells depicted 1.34-fold more PKC-beta in the nucleus than in the cytoplasm and a 1-min HuIFN alpha-2b (500 units/ml) treatment transiently increased PKC-beta immunoreactivity in the cytoplasm (1.95-fold) and nucleus (1.97-fold). In …
Upper Ocean Variability On The Equator In The Pacific At 170-Degrees-W, Robert H. Weisberg, Stanley P. Hayes
Upper Ocean Variability On The Equator In The Pacific At 170-Degrees-W, Robert H. Weisberg, Stanley P. Hayes
Marine Science Faculty Publications
The monitoring of upper ocean velocity, temperature, and surface winds at 0 degrees, 170 degrees W was initiated in May 1988 as part of the Tropical Ocean-Global Atmosphere program. Located between regions of warm (cold) sea surface temperature in the western (eastern) equatorial Pacific, this west central region exhibits large interannual variations in surface wind stress associated with the El Nino-Southern Oscillation. Here we report on the first 3 years of data collected at 0 degrees, 170 degrees W, exclusive of an El Nino event. The west central Pacific is a region through which the Equatorial Undercurrent (EUC) accelerates downstream. …
Analysis Of Ocean Color Components Within Stratified And Well-Mixed Waters Of The Western English Channel, Herschel T. Hochman, John J. Walsh, Kendall L. Carder, A. Sournia, Frank E. Muller-Karger
Analysis Of Ocean Color Components Within Stratified And Well-Mixed Waters Of The Western English Channel, Herschel T. Hochman, John J. Walsh, Kendall L. Carder, A. Sournia, Frank E. Muller-Karger
Marine Science Faculty Publications
In situ pigment and dissolved organic carbon (DOC) data from two distinct hydrographic regions of the western English Channel are used to explore the possible marine DOC contamination of the past satellite estimates of phytoplankton biomass. To compare with field measurements, the individual spectral contributions of DOC, pigments, and water to the total diffuse attenuation coefficient, Kpar, are summed on a quantum basis within stratified waters near Plymouth, England; and for the spectrally averaged diffuse attenuation coefficient, Kd, on an energy basis within tidally mixed waters near Roscofif, France. In addition, coastal zone color scanner (CZCS) …
Seasonal-Scale To Decadal-Scale Climatic Variability In Southwest Florida During The Middle Pliocene: Inferences From A Coralline Stable-Isotope Record, Leanne M. Roulier, Terrence M. Quinn
Seasonal-Scale To Decadal-Scale Climatic Variability In Southwest Florida During The Middle Pliocene: Inferences From A Coralline Stable-Isotope Record, Leanne M. Roulier, Terrence M. Quinn
Marine Science Faculty Publications
We have generated a 49‐year‐long, high‐resolution, stable isotope record from a fossil coral, Solenastrea bournoni, to evaluate regional sea surface conditions during the middle Pliocene (3.0 ± 0.5 Ma) in southwest Florida. Continuous routing of the coral slab at an interval of 0.76 mm produced ∼5 to 6 samples per year. The annual cycle is well defined in δ18O and δ13C records confirming the average yearly growth rate estimated from density banding of 4 to 5 mm/yr. High‐density bands are synchronous with the highest δ18O and δ13C values for 79% and …
Tropical Instability Wave Kinematics: Observations From The Tropical Instability Wave Experiment, L. Qiao, Robert H. Weisberg
Tropical Instability Wave Kinematics: Observations From The Tropical Instability Wave Experiment, L. Qiao, Robert H. Weisberg
Marine Science Faculty Publications
The kinematics of planetary waves originating from instability of the nearsurface equatorial currents are reported on using velocity measurements from an array of acoustic Doppler current profilers deployed in the equatorial Pacific during the Tropical Instability Wave Experiment. A distinctive wave season was observed from August to December 1990, with wave energy confined primarily above the core of the Equatorial Undercurrent. Particle motions in the horizontal plane are described by eccentric ellipses oriented toward the north, but tilting into the cyclonic shear of the South Equatorial Current. The tilt is maximum near the surface just north of the equator and …
Genetic Diversity Of Related Vibriophages Isolated From Marine Environments Around Florida And Hawaii, Usa, C. A. Kellogg, J. B. Rose, S. C. Jaing, J. M. Thurmond, John H Paul
Genetic Diversity Of Related Vibriophages Isolated From Marine Environments Around Florida And Hawaii, Usa, C. A. Kellogg, J. B. Rose, S. C. Jaing, J. M. Thurmond, John H Paul
Marine Science Faculty Publications
Although viruses from the marine environment have been enumerated, isolated, and characterized, there is little information on the abundance or global distribution of specific phage types. To this end, we studied the abundance and distribution of phages which infect a marine bacterium isolated from Tampa Bay (Florida, USA), tentatively identified (Microbial ID, Inc., Newark, Delaware, USA) as Vibrio parahaemolyticus. Using this host, we have isolated over 60 phages from the Gulf of Mexico, Tampa Bay, Florida Keys, and Oahu, Hawaii (USA). These isolates are all Myoviridae, with head sizes ranging from 50 +/- 0.0 to 65 +/- 4.2 nm …
Calculated Quantum Yield Of Photosynthesis Of Phytoplankton In The Marine Light-Mixed Layers (59-Degrees-N, 21-Degrees-W), Kendall L. Carder, Z. P. Lee, J. Marra, R. G. Steward, M. J. Perry
Calculated Quantum Yield Of Photosynthesis Of Phytoplankton In The Marine Light-Mixed Layers (59-Degrees-N, 21-Degrees-W), Kendall L. Carder, Z. P. Lee, J. Marra, R. G. Steward, M. J. Perry
Marine Science Faculty Publications
The quantum yield ø of photosynthesis (mol C (mol photons)−1) was calculated at six depths for the waters of the Marine Light‐Mixed Layer (MLML) cruise of May 1991. As there were photosynthetically available radiation (PAR) but no spectral irradiance measurements for the primary production incubations, three ways are presented here for the calculation of the absorbed photons (AP) by phytoplankton for the purpose of calculating ø. The first is based on a simple, nonspectral model; the second is based on a nonlinear regression using measured PAR values with depth; and the third is derived through remote sensing measurements. …
The Source Of 90-Day Oscillations At Wake Island, Gary T. Mitchum
The Source Of 90-Day Oscillations At Wake Island, Gary T. Mitchum
Marine Science Faculty Publications
Energetic 90-day oscillations of sea level have been intermittently observed at Wake Island in the western tropical Pacific during the past 2 decades. The oscillations tend to occur about 1.5 years after El Niño-Southern Oscillation events, to have amplitudes of 10–15 cm, and to persist for about 1 year. Sea surface heights from the Geosat altimeter are used to establish that these signals take the form of Rossby waves and have an energy source near the Big Island of Hawaii, which lies 40° of longitude to the east. Sea level and upper layer currents from an eddy-resolving numerical model are …