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Articles 1 - 30 of 30
Full-Text Articles in Physical Sciences and Mathematics
Experimental And Modeling Studies Of Secondary Organic Aerosol Formation And Some Applications To The Marine Boundary Layer, Song Gao, Dean A. Hegg, Glendon Frick, Peter F. Caffrey, Louise Pasternack, Chris Cantrell, William Sullivan, John Ambrusko, Thomas Albrechcinski, Thomas W. Kirchstetter
Experimental And Modeling Studies Of Secondary Organic Aerosol Formation And Some Applications To The Marine Boundary Layer, Song Gao, Dean A. Hegg, Glendon Frick, Peter F. Caffrey, Louise Pasternack, Chris Cantrell, William Sullivan, John Ambrusko, Thomas Albrechcinski, Thomas W. Kirchstetter
Chemistry and Physics Faculty Articles
A series of controlled experiments were carried out in the Calspan Corporation's 600 m3environmental chamber to study some secondary organic aerosol formation processes. Three precursor-ozone systems were studied: cyclopentene-ozone, cyclohexene-ozone, and α-pineneozone. Additionally, SO2 was added to the initial gas mixture in several instances and was likely present at trace levels in the ostensibly organic-only experiments. It was found that all three systems readily formed new submicron aerosols at very low reactant levels. The chemical composition of formed aerosols was consistent with some previous studies, but the yields of organic products were found to be lower in …
Sulfur Dioxide Uptake And Oxidation In Sea-Salt Aerosol, William Hoppel, Louise Pasternack, Peter F. Caffrey, Glendon Frick, James Fitzgerald, Dean A. Hegg, Song Gao, John Ambrusko, Thomas Albrechcinski
Sulfur Dioxide Uptake And Oxidation In Sea-Salt Aerosol, William Hoppel, Louise Pasternack, Peter F. Caffrey, Glendon Frick, James Fitzgerald, Dean A. Hegg, Song Gao, John Ambrusko, Thomas Albrechcinski
Chemistry and Physics Faculty Articles
Measurements of SO2 and O3 uptake by sea-salt and NaCl aerosol were made in a 600 m3environmental chamber by measuring the rate of SO2 and O3 depletion during nebulization of seawater and NaCl solutions. The experiments were carried out with starting relative humidity between 80% and 92%, with SO2 concentrations between 35 and 60 ppb, and ozone concentrations between O and 110 ppb. For NaCl, no SO2 or O3uptake was observed. For sea-salt aerosol, uptake in the range of 0.21 and 1.2 millimoles of S per liter of (nebulized) seawater …
In-Cloud Oxidation Of So2 By O3 And H2o2: Cloud Chamber Measurements And Modeling Of Particle Growth, Peter F. Caffrey, William Hoppel, Glendon Frick, Louise Pasternack, James Fitzgerald, Dean A. Hegg, Song Gao, W. R. Leaitch, Nicole Shantz, Thomas Albrechcinski, John Ambrusko
In-Cloud Oxidation Of So2 By O3 And H2o2: Cloud Chamber Measurements And Modeling Of Particle Growth, Peter F. Caffrey, William Hoppel, Glendon Frick, Louise Pasternack, James Fitzgerald, Dean A. Hegg, Song Gao, W. R. Leaitch, Nicole Shantz, Thomas Albrechcinski, John Ambrusko
Chemistry and Physics Faculty Articles
Controlled cloud chamber experiments were conducted to measure particle growth resulting from the oxidation of SO2 by O3 and H2O2 in cloud droplets formed on sulfuric acid seed aerosol. Clouds were formed in a 590 m3 environmental chamber with total liquid water contents ranging from 0.3–0.6 g m−3 and reactant gas concentrations <10 ppbv for SO2 and H2O2 and <70 ppbv for O3. Aerosol growth was measured by comparison of differential mobility analyzer size distributions before and after each 3–4 min cloud cycle. Predictions of aerosol growth were then made with a full microphysical cloud …70>10>
Particle Formation And Growth From Ozonolysis Of Α-Pinene, William Hoppel, James Fitzgerald, Glendon Frick, Peter F. Caffrey, Louise Pasternack, Dean A. Hegg, Song Gao, W. Richard Leaitch, Nicole Shantz, Chris Cantrell, Thomas Albrechcinski, John Ambrusko, William Sullivan
Particle Formation And Growth From Ozonolysis Of Α-Pinene, William Hoppel, James Fitzgerald, Glendon Frick, Peter F. Caffrey, Louise Pasternack, Dean A. Hegg, Song Gao, W. Richard Leaitch, Nicole Shantz, Chris Cantrell, Thomas Albrechcinski, John Ambrusko, William Sullivan
Chemistry and Physics Faculty Articles
Observations of particle nucleation and growth during ozonolysis of α-pinene were carried out in Calspan's 600 m3 environmental chamber utilizing relatively low concentrations of α-pinene (15 ppb) and ozone (100 ppb). Model simulations with a comprehensive sectional aerosol model which incorporated the relevant gas-phase chemistry show that the observed evolution of the size distribution could be simulated within the accuracy of the experiment by assuming only one condensable product produced with a molar yield of 5% to 6% and a saturation vapor pressure (SVP) of about 0.01 ppb or less. While only one component was required to simulate the …
The Tetramethylpiperidinyl-1-Oxide Anion (Tmpo-) As A Ligand In Lanthanide Chemistry: Synthesis Of The Per(Tmpo-) Complex [(Onc5h6me4)2sm(Μ-Onc5h6me4)]2, William J. Evans, Jeremy M. Perotti, Robert J. Doedens, Joseph W. Ziller
The Tetramethylpiperidinyl-1-Oxide Anion (Tmpo-) As A Ligand In Lanthanide Chemistry: Synthesis Of The Per(Tmpo-) Complex [(Onc5h6me4)2sm(Μ-Onc5h6me4)]2, William J. Evans, Jeremy M. Perotti, Robert J. Doedens, Joseph W. Ziller
Chemistry and Physics Faculty Articles
(C5Me5)3Sm reacts with the free radical 2,2,6,6-tetramethylpiperidinyl-1-oxy (TMPO) to form (C5Me5)2 and the per nitroxide [(η1-ONC5H6Me4)2 Sm(μ-η1∶η2-ONC5H 6Me4)]2
Identification Of Species Composition In The Hong Kong Shark Fin Trade Using Genetic Techniques And Trader Records, Shelley C. Clarke, Mahmood S. Shivji, Murdoch K. Mcallister
Identification Of Species Composition In The Hong Kong Shark Fin Trade Using Genetic Techniques And Trader Records, Shelley C. Clarke, Mahmood S. Shivji, Murdoch K. Mcallister
Marine & Environmental Sciences Faculty Proceedings, Presentations, Speeches, Lectures
Trade in shark fins represents one of the most serious threats to shark populations worldwide. Previous studies have indicated that certain types of fins are more valued than others, but due to the largely unregulated and often covert nature of the trade, information on actual species composition has been anecdotal and unverified. In order to examine the potential impacts of the shark fin trade on the abundance of various shark species, a study of the species composition in the world’s largest shark fin trading center, Hong Kong, was initiated. Several approaches for distinguishing the species identity of dried fins were …
Fall 2001, Nsu Oceanographic Center
Ncri 3-D Visualization Of Coral Reef Habitat, Brian K. Walker
Ncri 3-D Visualization Of Coral Reef Habitat, Brian K. Walker
Marine & Environmental Sciences Faculty Articles
No abstract provided.
Preface: Proceedings Of The National Coral Reef Institute's International Conference On Scientific Aspects Of Coral Reef Assessment, Monitoring And Restoration, James Darwin Thomas
Preface: Proceedings Of The National Coral Reef Institute's International Conference On Scientific Aspects Of Coral Reef Assessment, Monitoring And Restoration, James Darwin Thomas
Marine & Environmental Sciences Faculty Proceedings, Presentations, Speeches, Lectures
No abstract provided.
Degradation Of Reef Structure, Coral And Fish Communities In The Red Sea By Ship Groundings And Dynamite Fisheries, Bernhard Riegl
Degradation Of Reef Structure, Coral And Fish Communities In The Red Sea By Ship Groundings And Dynamite Fisheries, Bernhard Riegl
Marine & Environmental Sciences Faculty Articles
Reef degradation was investigated on 66 Egyptian Red Sea reefs—60 reefs for dynamite damage (using line transects) and six ship grounding sites (using 1 m sample squares). Ship groundings and dynamite fishing caused similar damage, reduction of the reef to rubble (65% of reefs were dynamited, mostly leeward, 58%). Changes in coral (line transect study) and fish communities (point count study) in impacted sites were documented. On impacted reefs, coral cover decreased, bare substratum and rubble increased, and fish dominance shifted away from Pomacentridae. Oceanographic conditions result in a stable pattern of coral communities (windward Acropora, leeward Porites). …
Site-Dependent Differences In Artificial Reef Function: Implications For Coral Reef Restoration, Robin L. Sherman, David S. Gilliam, Richard E. Spieler
Site-Dependent Differences In Artificial Reef Function: Implications For Coral Reef Restoration, Robin L. Sherman, David S. Gilliam, Richard E. Spieler
Marine & Environmental Sciences Faculty Articles
There is an increasing use of artificial structure in coral reef restoration (for references, see Spieler et al., this volume). Often artificial reef structures are chosen for a restoration project simply because they were used elsewhere. However, it is questionable whether the results obtained at one restoration site can be extrapolated to another. In recent years, several studies have examined the effect of artificial reef site selection on formation of associated fish, algae, and/or invertebrate assemblages (Alevizon et al., 1985; Blinova et al., 1994; Bombace et al., 1994; Caley and St. John, 1996; Chang, 1985; Haughton and Aiken, 1989; Hixon …
Mapping And Monitoring Of Coral Communities And Their Spatial Patterns Using A Surface-Based Video Method From A Vessel, Bernhard Riegl, Jan L. Korrubel, Charles Martin
Mapping And Monitoring Of Coral Communities And Their Spatial Patterns Using A Surface-Based Video Method From A Vessel, Bernhard Riegl, Jan L. Korrubel, Charles Martin
Marine & Environmental Sciences Faculty Articles
No Abstract Provided.
Applying Habitat Equivalency Analysis For Coral Reef Damage Assessment And Restoration, J. Walter Milon, Richard E. Dodge (Editor)
Applying Habitat Equivalency Analysis For Coral Reef Damage Assessment And Restoration, J. Walter Milon, Richard E. Dodge (Editor)
Marine & Environmental Sciences Faculty Articles
Quantifying economic damages and restoration measures for injuries to coral reefs has been a difficult task. In the U.S., habitat equivalency analysis (HEA) has emerged as a novel tool that combines biological and economic information to identify replacement habitats of an appropriate scale to substitute for the interim losses resulting from coral reef injuries. This article provides a review of the basic principles underlying HEA and a discussion of important considerations in applying HEA. These considerations include: how to describe coral reef functions and related human uses, recovery rates of coral reef organisms at injured sites with natural and active …
Artificial Substrate And Coral Reef Restoration: What Do We Need To Know To Know What We Need, Richard E. Spieler, David S. Gilliam, Robin L. Sherman
Artificial Substrate And Coral Reef Restoration: What Do We Need To Know To Know What We Need, Richard E. Spieler, David S. Gilliam, Robin L. Sherman
Marine & Environmental Sciences Faculty Articles
To use artificial substrate effectively in coral reef restoration certain basic knowledge is required: (1) what is the artificial substrate expected to accomplish relative to the goals of the restoration effort and (2) what are the expected interactions of the selected substrate’s composition, texture, orientation, and design with the damaged environment and the biota of interest. Whereas the first point is usually clear, at least in general terms, the second is not. In this review, we examine: the functions of artificial substrate in restoration and some of the physical (i.e., composition; surface texture; color and chemistry; and design in terms …
Biological Survey Report For The Calypso Natural Gas Pipeline: Shore Approach Route North Of Port Everglades Entrance Channel With Landing South Of Port Everglades Entrance Channel, Richard E. Dodge, Susan L. Thornton, David S. Gilliam, Richard Shaul
Biological Survey Report For The Calypso Natural Gas Pipeline: Shore Approach Route North Of Port Everglades Entrance Channel With Landing South Of Port Everglades Entrance Channel, Richard E. Dodge, Susan L. Thornton, David S. Gilliam, Richard Shaul
Marine & Environmental Sciences Faculty Reports
The Calypso Natural Gas Pipeline Project (project) will include a 24-inch pipeline which will extend from the Exclusive Economic Zone (EEZ) off the southeast Florida coastline to a shore approach at Port Everglades in Fort Lauderdale, Florida.
This report, which was commissioned in May 2001 and completed in July, 2001, documents the results of a detailed biological survey of underwater marine habitats from 5 to 200 feet water depth for the pipeline route. The route, which was established based on the subsea survey that was completed in May 2001 by Williamson & Associates, Inc., includes a shore approach from the …
Responses Of Three Coral Communities To The 1997–98 El Niño–Southern Oscillation: Galápagos Islands, Ecuador, Joshua S. Feingold
Responses Of Three Coral Communities To The 1997–98 El Niño–Southern Oscillation: Galápagos Islands, Ecuador, Joshua S. Feingold
Marine & Environmental Sciences Faculty Articles
One deep (13–15 m depth) and two shallow water (1.5 and 7 m) coral communities in the Galápagos Islands, Ecuador were monitored for tissue response (bleaching, paling, morbidity) and secondary responses during and after elevated temperature stress associated with the 1997–98 El Niño–Southern Oscillation (ENSO) event. Between March and May 1998, the fungiid coral Diaseris distorta paled and bleached (up to 88.0% of all individuals bleached) at 13–15 m depth. The small branching colonial coral, Psammocora stellata, paled (79.2% of all colonies) with very little bleaching (11.1%), also at 13–15 m depth. However, by May 1998 colonies of this …
Spring/Summer 2001, Nsu Oceanographic Center
Marine Biological Monitoring In Broward County, Florida: Year 1 Annual Report, David S. Gilliam, Richard E. Dodge, Richard E. Spieler, Susan L. Thornton, Lance K. B. Jordan
Marine Biological Monitoring In Broward County, Florida: Year 1 Annual Report, David S. Gilliam, Richard E. Dodge, Richard E. Spieler, Susan L. Thornton, Lance K. B. Jordan
Marine & Environmental Sciences Faculty Reports
No abstract provided.
An Approach To Parameterization Of The Oceanic Turbulent Boundary Layer In The Western Pacific Warm Pool, Alexander Soloviev, Roger Lukas, Peter Hacker
An Approach To Parameterization Of The Oceanic Turbulent Boundary Layer In The Western Pacific Warm Pool, Alexander Soloviev, Roger Lukas, Peter Hacker
Marine & Environmental Sciences Faculty Articles
Vertical profiles of zonal velocity and the dissipation rate ε of the turbulent kinetic energy obtained during the Tropical Ocean-Global Atmosphere Coupled Ocean-Atmosphere Response Experiment (COARE) are analyzed in the context of planetary boundary layer relationships previously derived from atmospheric measurements. The presence of a barrier layer and the striking effect of increased dimensionless shear and ε at the bottom of the surface mixed layer of the ocean, features often observed in the western Pacific warm pool area, are consistent with the boundary layer laws. The gradient Richardson number Ri is found to be a convenient parameter for scaling the …
Review Of The Marine Mammals Of The Gulf Of Mexico, Edward O. Keith
Review Of The Marine Mammals Of The Gulf Of Mexico, Edward O. Keith
Marine & Environmental Sciences Faculty Articles
No abstract provided.
Sea Turtle Conservation Program, Broward County, Fl 2001 Report, Curtis M. Burney, Stefanie Ouellette
Sea Turtle Conservation Program, Broward County, Fl 2001 Report, Curtis M. Burney, Stefanie Ouellette
Marine & Environmental Sciences Faculty Reports
No abstract provided.
Guidelines For Development Of Courses For Delivery Over The Iowa Communications Network, Gary F. Hasman
Guidelines For Development Of Courses For Delivery Over The Iowa Communications Network, Gary F. Hasman
CCE Theses and Dissertations
This paper examines the quality of education as it relates to the Iowa Communications Network (ICN). It reviews the literature to determine a working definition of quality that was used to create a list of characteristics desirable in teachers who use technology. A list of such teachers was solicited from three administrative committees of the ICN and from the directors of the state's 15 area education agencies. Four teachers were selected from the list and their approach to creating programs for delivery over the ICN was examined. Personal interviews were used to discover commonalities among the four teachers' approaches to …
The Extraction Of Classification Rules And Decision Trees From Independence Diagrams, Robert W. Kerbs
The Extraction Of Classification Rules And Decision Trees From Independence Diagrams, Robert W. Kerbs
CCE Theses and Dissertations
Databases are growing exponentially in many application domains. Timely construction of models that represent identified patterns and regularities in the data facilitate the prediction of future events based upon past performance. Data mining can promote this process through various model building techniques. The goal is to create models that intuitively represent the data and perhaps aid in the discovery of new knowledge.
Most data mining methods rely upon either fully-automated information-theoretic or statistical algorithms. Typically, these algorithms are non-interactive, hide the model derivation process from the user, require the assistance of a domain expert, are application-specific, and may not clearly …
Dynamic Update Techniques For Online Maps And Attributes Data, Thanh H. Pham
Dynamic Update Techniques For Online Maps And Attributes Data, Thanh H. Pham
CCE Theses and Dissertations
Online databases containing geographic and related tabular data for maps and attributes often require continuous updates from widely distributed sources afield. For some applications, these data are dynamic, and thus are of little value if they do not reflect the latest information or changes. A status map that depicts graphically temporal data affecting accountability is an example of this type of data. How can accommodations be made collectively for the perpetual data updates in the database and the need to deliver online information in real time without making concessions? The goal of the dissertation was to analyze and evaluate techniques …
Comparison Of Student Performance And Attitude In A Lecture Class To Student Performance And Attitude In A Telecourse And A Web-Based Class, William J. Ryan
Comparison Of Student Performance And Attitude In A Lecture Class To Student Performance And Attitude In A Telecourse And A Web-Based Class, William J. Ryan
CCE Theses and Dissertations
Increasing numbers of students are returning to school and choosing alternatives to the lecture method of instruction. Using technology to reach students is a solution colleges and universities are evaluating and implementing with the goal of increasing enrollment and reducing the cost of instruction. This research examines the impact two technology-based delivery systems have on the student's learning experience compared with an equivalent classroom-based instructional method.
Academic institutions are being asked to respond to the rapid changes faced by the communities they serve especially as current workers return to join new students in obtaining knowledge and skills needed in today's …
Gross Brain Morphology In The Yellow Stingray, Urobatis Jamaicensis, Brian K. Walker, Robin L. Sherman
Gross Brain Morphology In The Yellow Stingray, Urobatis Jamaicensis, Brian K. Walker, Robin L. Sherman
Marine & Environmental Sciences Faculty Articles
The yellow stingray, Urobatis jamaicensis (family Urolophidae), a short-lived, relatively small elasmobranch species (35--40 cm total length), is a common inhabitant of hard bottom and coral reef communities in southeastern Florida and many parts of the Caribbean. A paucity of published studies deal with the yellow stingray, none however on the gross morphology of its nervous system. The gross brain structure of the yellow stingray is compared with previously published studies on other batoid elasmobranchs. The external brain structure of Urobatis jamaicensis was similar to that reported for other Dasyatids, including presence of an asymmetric cerebellum. The bilaterally symmetric brain …
Environmental Analysis Of Cores From The Helike Delta, Gulf Of Corinth, Greece, S. Soter, Patricia Blackwelder, C. Tziavos, D. Katsonopoulou, Terri Hood, Carlos A. Alvarez Zarikian
Environmental Analysis Of Cores From The Helike Delta, Gulf Of Corinth, Greece, S. Soter, Patricia Blackwelder, C. Tziavos, D. Katsonopoulou, Terri Hood, Carlos A. Alvarez Zarikian
Marine & Environmental Sciences Faculty Articles
The fan delta southeast of Aigion on the southwest shore of the Gulf of Corinth was the site of ancient Helike, a city destroyed and submerged by an earthquake and seismic sea wave in 373 BC. Bore holes drilled on the Helike Delta yielded numerous ceramic fragments in the upper 12 meters, and a record of changing local environments on the delta during the Holocene period. At about 8 m below present sea level the core profiles show a general upward transition from marine to lacustrine/lagoonalc onditions.T he transition dates from about 8 kyr BP and is probably due to …
Abundance And Distribution Of Commensal Amphipods From Common Marine Sponges Of Southeast Florida, Stacie E. Crowe
Abundance And Distribution Of Commensal Amphipods From Common Marine Sponges Of Southeast Florida, Stacie E. Crowe
HCNSO Student Theses and Dissertations
Marine sponges were examined from shallow waters of southeast Florida and the Florida Keys to determine species composition and distribution of commensal amphipod crustaceans from shallow reef, mangrove, and seagrass habitats. Twenty sponge species were investigated during this study, sixteen of which housed amphipods in the families Colomastigidae and/or Leucothoidae. Six species of commensal amphipods were identified. Leucothoe spinicarpa (Abildgaard) species "complex" was the most dominant amphipod commensal, representing 63% of the total amphipods collected. The L. spinicarpa "complex" contains four local morphotypes, which are diagnosed and briefly described. Common sponge hosts included Callyspongia vaginalis, Mycale sp., and Myriastra kallitetilla.
Graduate School Of Computer And Information Sciences--Master Of Science Degree Programs 2001-2003, Nova Southeastern University
Graduate School Of Computer And Information Sciences--Master Of Science Degree Programs 2001-2003, Nova Southeastern University
College of Engineering and Computing Course Catalogs
No abstract provided.
2001-2002 Nova Southeastern University Center For Undergraduate Studies Catalog, Nova Southeastern University
2001-2002 Nova Southeastern University Center For Undergraduate Studies Catalog, Nova Southeastern University
Undergraduate Programs Course Catalogs
No abstract provided.