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Title: Measurement of Electron Temperature and Density in a Reflex Discharge.
Creator: Scalise, Stanley J., Stetson, Robert F., Florida Atlantic University
Abstract/Description: An experimental investigation of a reflex discharge in Argon is carried out. Definition is made of a region of acceptable operating parameters consistent with continuous, stable operation of the plasma. Electron temperature is measured through the use of spectroscopy, electrostatic wave propagation, and Langmuir Probes. An electron temperature in the 1 eV to 5 eV range is indicated. Electron density is measured through the observation of the upperhybrid frequency. This observation yields an...
Show moreAn experimental investigation of a reflex discharge in Argon is carried out. Definition is made of a region of acceptable operating parameters consistent with continuous, stable operation of the plasma. Electron temperature is measured through the use of spectroscopy, electrostatic wave propagation, and Langmuir Probes. An electron temperature in the 1 eV to 5 eV range is indicated. Electron density is measured through the observation of the upperhybrid frequency. This observation yields an electron density in the region from .27 x 10^8/cm^3 to 2.38 x 10^8/cm^3. The microwave apparatus used in the density measurement is described in detail.
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Date Issued: 1967
PURL: http://purl.flvc.org/fau/fd/FA00000825
Subject Headings: Plasma (Ionized gases), Low temperature plasmas, Plasma density, Microwave measurements, Plasma diagnostics
Format: Document (PDF)

Title: Thermal response in Florida bridges.
Creator: Sandepudi, Krishna Srinivasa., Florida Atlantic University, Arockiasamy, Madasamy, College of Engineering and Computer Science, Department of Ocean and Mechanical Engineering
Abstract/Description: Reinforced and prestressed concrete bridges are subjected to non-linear temperature variations leading to complex thermal stresses which vary continuously with time. Though these stresses are often comparable with those produced by live and dead loads, little guidance is given in bridge design codes on how these stresses are accurately computed. The objective of this project is to study the response of Florida bridges in the extreme thermal environment The project is divided into the...
Show moreReinforced and prestressed concrete bridges are subjected to non-linear temperature variations leading to complex thermal stresses which vary continuously with time. Though these stresses are often comparable with those produced by live and dead loads, little guidance is given in bridge design codes on how these stresses are accurately computed. The objective of this project is to study the response of Florida bridges in the extreme thermal environment The project is divided into the following four tasks i) Computer modeling of the bridge and estimation of the thermal response. ii) Field measurements of temperatures in typical bridges. iii) Comparison of observed and estimated data. iv) Suggestions and/or revisions to the existing thermal stress allowances in the code. A computer software FETAB was used to model and analyze the thermal response of several bridge cross sections. Two single cell box girder bridges, located at the 1-595 and US-441 interchange, Fort Lauderdale, were instrumented with thermocouples and vibrating wire strain gages. The predicted temperature variations were found to compare fairly well with those measured in the field. Though the analytical values vary a little from the actual field data, emphasis was given to gain insight into the problems associated with the thermal effects in concrete bridges. Suggestions were made for revision of existing design code provisions for improved design of bridges.
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Date Issued: 1991
PURL: http://purl.flvc.org/fcla/dt/14759
Subject Headings: Bridges, Concrete--Thermal properties, Bridges, Concrete--Effect of temperature on, Thermal stresses
Format: Document (PDF)

Title: Temperature and pressure tolerances in dispersal stages of the genus Echinus (Echinodermata: Echinoidea): prerequisites for deep‐sea invasion and speciation.
Creator: Tyler, Paul A., Young, Craig M., Harbor Branch Oceanographic Institute
Date Issued: 1998
PURL: http://purl.flvc.org/FCLA/DT/3331928
Subject Headings: Echinus, Sea urchins--Larvae, Sea urchins--Embryos, Larvae--Effect of temperature on, Larvae--Dispersal
Format: Document (PDF)

Title: Transport over a narrow shelf: Exuma Cays, Bahamas.
Creator: Smith, Ned P.
Date Issued: 2004
PURL: http://purl.flvc.org/FCLA/DT/2795920
Subject Headings: Exuma Islands, Bahamas --Maps, Continental shelf, Continental shelf --Caribbean Area, Marine ecology, Ocean temperature --Caribbean Sea --Charts, diagrams, etc.
Format: Document (PDF)

Title: On the hydrography of shelf waters off the central Texas gulf coast.
Creator: Smith, Ned P.
Date Issued: 1980
PURL: http://purl.flvc.org/FCLA/DT/3321406
Subject Headings: Hydrography--Gulf Coast (U.S.), Continental shelf--Gulf Coast (U.S.), Salinity, Water temperature
Format: Document (PDF)

Title: Fire performance of high strength concrete materials and structural concrete.
Creator: Liu, Lixian., College of Engineering and Computer Science, Department of Ocean and Mechanical Engineering
Abstract/Description: In recent years, high strength concrete (HSC) is becoming an attractive alternative to traditional normal strength concrete (NSC), and is used in a wide range of applications. With the increased use of HSC, concern has developed regarding the behavior of such concrete in fire. Until now, the fire performance of HSC is not fully understood and more research is needed. Full-scale fire testing is time consuming and expensive, and the real fire scenario is different from the standard fire....
Show moreIn recent years, high strength concrete (HSC) is becoming an attractive alternative to traditional normal strength concrete (NSC), and is used in a wide range of applications. With the increased use of HSC, concern has developed regarding the behavior of such concrete in fire. Until now, the fire performance of HSC is not fully understood and more research is needed. Full-scale fire testing is time consuming and expensive, and the real fire scenario is different from the standard fire. Performance-based assessment methods, including numerical analysis and simplified method, are being accepted in an increasing number of countries. In this dissertation, the fire testing results both of HSC and NSC are presented, performance-based numerical models are developed to study the fire performance of reinforced concrete (RC) members, and simplified calculation methods are proposed to estimate the load capacity of fire-damaged RC columns/beams. A detailed and comprehensive literature review is presented that provides background information on the high temperature behavior of concrete materials and RC members, as well as information on fire performance assessment procedures and objectives. The fire testing results of seven batches of HSC and NSC are presented and discussed. The test results indicated that the post-fire re-curing results in substantial strength and durability recovery, and its extent depends upon the types of concrete, temperature level, and re-curing age. The fire tests also showed that violent explosive reduced the risk of HSC explosive spalling. The surface crack widths were also reduced during the re-curing process, and in most cases, they were found within the maximum limits specified by the American Concrete Institute (ACI) building code., Numerical models are developed herein to investigate the behavior in fire of RC columns and beams. The models have been validated against fire test data available in literature, and used to conduct parametric studies, which focused on the size effect on fire resistance of RC columns, and the effect of concrete cover thickness on fire endurance of RC beams. Simplified calculation methods have been developed to predict the load capacity of fire damaged RC columns/beams. This method is validated by five case studies, including thirty-five RC columns tested by other investigators. The predicted results are compared with the experimental results, and the good agreement indicates the adequacy of the simplified method for practical engineering applications.
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Date Issued: 2009
PURL: http://purl.flvc.org/FAU/369189
Subject Headings: Reinforced concrete, Thermodynamics, Concrete, Effect of temperature on, Heat engineering, High strength concrete, Mechanical properties, Concrete, Permeability, Testing
Format: Document (PDF)

Title: Influences of climate variability and change on precipitation characteristics and extremes.
Creator: Goly, Aneesh, College of Engineering and Computer Science, Department of Civil, Environmental and Geomatics Engineering
Abstract/Description: This study focuses on two main broad areas of active research on climate: climate variability and climate change and their implications on regional precipitation characteristics. All the analysis is carried out for a climate change-sensitive region, the state of Florida, USA. The focus of the climate variability analysis is to evaluate the influence of individual and coupled phases (cool and warm) of Atlantic multidecadal oscillation (AMO) and El Niäno southern oscillation (ENSO) on regional...
Show moreThis study focuses on two main broad areas of active research on climate: climate variability and climate change and their implications on regional precipitation characteristics. All the analysis is carried out for a climate change-sensitive region, the state of Florida, USA. The focus of the climate variability analysis is to evaluate the influence of individual and coupled phases (cool and warm) of Atlantic multidecadal oscillation (AMO) and El Niäno southern oscillation (ENSO) on regional precipitation characteristics. The two oscillations in cool and warm phases modulate each other which have implications on flood control and water supply in the region. Extreme precipitation indices, temporal distribution of rainfall within extreme storm events, dry and wet spell transitions and antecedent conditions preceding extremes are evaluated. Kernel density estimates using Gaussian kernel for distribution-free comparative analysis and bootstrap sampling-based confidence intervals are used to compare warm and cool phases of different lengths. Depth-duration-frequency (DDF) curves are also developed using generalized extreme value (GEV) distributions characterizing the extremes. ... This study also introduces new approaches to optimally select the predictor variables which help in modeling regional precipitation and further provides a mechanism to select an optimum spatial resolution to downscale the precipitation projections. New methods for correcting the biases in monthly downscaled precipitation projections are proposed, developed and evaluated in this study. The methods include bias corrections in an optimization framework using various objective functions, hybrid methods based on universal function approximation and new variants.
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Date Issued: 2013
PURL: http://purl.flvc.org/fcla/dt/3362383
Subject Headings: Climatic changes, Environmental aspects, Global temperature changes, Environmental aspects, Precipitation (Meteorology), Measurement, Bootstrap (Statistics)
Format: Document (PDF)

Title: Plasma Steroid Hormones in Loggerhead and Green Sea Turtle Hatchlings.
Creator: Reis, Andrea, Milton, Sarah L., Florida Atlantic University, Charles E. Schmidt College of Science, Department of Biological Sciences
Abstract/Description: Florida’s sea turtle populations are increasing due to conservation efforts; however, sea turtle species are vulnerable to climate change. Turtles exhibit temperaturedependent sex determination, in which nest environment influences sex. Environmental changes may produce altered sex ratios that limit reproduction potential; therefore hatchling sex ratios should be monitored. Hatchlings are not externally sexually dimorphic, making sex identification difficult. This study established baseline...
Show moreFlorida’s sea turtle populations are increasing due to conservation efforts; however, sea turtle species are vulnerable to climate change. Turtles exhibit temperaturedependent sex determination, in which nest environment influences sex. Environmental changes may produce altered sex ratios that limit reproduction potential; therefore hatchling sex ratios should be monitored. Hatchlings are not externally sexually dimorphic, making sex identification difficult. This study established baseline plasma hormone concentrations in hatchling and post-hatchling green (Chelonia mydas) and loggerhead (Caretta caretta) sea turtles using High Performance Liquid Chromatography. Five hormones were assayed and were present in the majority of samples (testosterone: N.D.-10.12, progesterone: N.D.-0.43, estradiol: N.D.-4.78, estriol: N.D.-5.55 and estrone: N.D.-1.67 μg/mL). Plasma hormones did not distinguish hatchling sex because male and female ranges overlapped. Hormone concentrations varied with sex but also with incubation temperature, indicating that climate change could impact hatchling and posthatchling hormone profiles and thus could impact future fitness.
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Date Issued: 2016
PURL: http://purl.flvc.org/fau/fd/FA00004626
Subject Headings: Sea turtles--Embryology., Sea turtles--Habitat--Conservation., Sex determination, Genetic., Loggerhead turtle--Effect of temperature on., Developmental genetics.
Format: Document (PDF)

Title: Hatchling sex ratios and nest temperature-sex ratio response of three South Florida marine turtle species (Caretta caretta L., Chelona mydas L., and Dermochelys coriacea V.).
Creator: Rogers, Micah Marie., Charles E. Schmidt College of Science, Department of Biological Sciences
Abstract/Description: South Florida's loggerhead (Caretta caretta), green (Chelonia mydas) and leatherback (Dermochelys coriacea) sea turtles hatchling have environmentally determined sex. The in situ nest mean hatchling sex ratios (SR) were highly female-biased : loggerhead F=0.89) and green turtle F=0.81; leatherback's SR was nearly balanced (0.55F). Nest temperatures and SRs differed between leatherbacks and loggerhead and green turtles. The latter two did not differ. The loggerhead response parameters were...
Show moreSouth Florida's loggerhead (Caretta caretta), green (Chelonia mydas) and leatherback (Dermochelys coriacea) sea turtles hatchling have environmentally determined sex. The in situ nest mean hatchling sex ratios (SR) were highly female-biased : loggerhead F=0.89) and green turtle F=0.81; leatherback's SR was nearly balanced (0.55F). Nest temperatures and SRs differed between leatherbacks and loggerhead and green turtles. The latter two did not differ. The loggerhead response parameters were estimated within biological limitations by both 50-65% of incubation and mean middle 1/3 temperature. The maximum middle 1/3 temperature was the best-fit predictor for green turtles. No best-fit sex ratio-temperature response could be identified for leatherbacks. Clutches incubating under natural conditions can vary greatly in SR ; TRT differences may account for differences among species' sex ratios.
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Date Issued: 2013
PURL: http://purl.flvc.org/fcla/dt/3361062
Subject Headings: Sex ratio, Sex determination, Genetic, Sea turtles, Nests, Sea turtles, Embryology, Loggerhead turtle, Nests, Loggerhead turtle, Effect of temperature on
Format: Document (PDF)

Title: Effect of elevated temperature and fire on structural elements retrofitted by carbon fiber reinforced polymer composites.
Creator: Young, Jody David, Jr., Florida Atlantic University, Reddy, Dronnadula V., College of Engineering and Computer Science, Department of Civil, Environmental and Geomatics Engineering
Abstract/Description: This thesis presents an experimental investigation for evaluating effects of fire exposure on properties of structural elements retrofitted by carbon fiber reinforced polymers. Mechanical properties of CFRP-strengthened reinforced concrete members, protected with secondary insulation, were investigated, before and after (residual) direct fire exposure. Direct fire contact resulted in a reduction in capacity of 9-20% for CFRP-strengthened RC beams, and 15-34% for CFRP-strengthened RC columns....
Show moreThis thesis presents an experimental investigation for evaluating effects of fire exposure on properties of structural elements retrofitted by carbon fiber reinforced polymers. Mechanical properties of CFRP-strengthened reinforced concrete members, protected with secondary insulation, were investigated, before and after (residual) direct fire exposure. Direct fire contact resulted in a reduction in capacity of 9-20% for CFRP-strengthened RC beams, and 15-34% for CFRP-strengthened RC columns. Furthermore, a dimensional analysis was developed for a heat transfer relationship between full and small-scale specimens, allowing a ¼ exposure time reduction for the latter. Results from experimental investigations demonstrate benefits of employing secondary fire protection to CFRP-strengthened structures, in spite of the glass transition temperature being exceeded in the early stages of the elevated-temperature exposure. Therefore, it is suggested, that fire protection is necessary for a CFRP-strengthened structural member to retain integrity throughout the duration of the fire exposure, and upon return to ambient temperature.
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Date Issued: 2006
PURL: http://purl.flvc.org/fcla/dt/13322
Subject Headings: Buildings--Repair and reconstruction, Reinforced concrete, Fiber reinforced plastics, Fire resistant materials, Thermodynamics, Heat engineering, Concrete--Effect of temperature on
Format: Document (PDF)

Title: Paleoclimate of the Late Oligocene Arctic Ocean: Molluscan Isotopic and Biotic Evidence.
Creator: Port, Rebecca B., Oleinik, Anton E., Florida Atlantic University
Abstract/Description: Molluscan isotopic and biotic evidence was used to determine the paleotemperature of the Late Oligocene Arctic Ocean during an important period of climate change. Mollusks were collected from the Nuwok Member type section on the Arctic coast of Alaska. A systematic analysis was conducted to determine the position of Late Oligocene Arctic mollusks within a context of marine Cenozoic evolution and diversification. Oxygen stable isotope ratios of five fossil genera were used to calculate...
Show moreMolluscan isotopic and biotic evidence was used to determine the paleotemperature of the Late Oligocene Arctic Ocean during an important period of climate change. Mollusks were collected from the Nuwok Member type section on the Arctic coast of Alaska. A systematic analysis was conducted to determine the position of Late Oligocene Arctic mollusks within a context of marine Cenozoic evolution and diversification. Oxygen stable isotope ratios of five fossil genera were used to calculate paleotemperatures and analyze growth histories. Taxa were selected to check for compatibility of results between fossil genera from the same environment. Oxygen stable isotope ratios of four recent high-latitude genera were analyzed for comparative purposes. Isotopically derived paleotemperatures represent the first documented quantitative temperatures for the Late Oligocene Arctic Ocean. Isotopic and systematic results give great insight into the extent and degree of Arctic cooling by the Late Oligocene and the origin of modem Arctic mollusks.
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Date Issued: 2008
PURL: http://purl.flvc.org/fau/fd/FA00000811
Subject Headings: Marine animals, Fossil--Arctic Ocean, Geology--Alaska, Deep-sea temperature--Mathematical models, Geology, Stratigraphic--Oligocene, Paleogeography--Alaska
Format: Document (PDF)

Title: Predicting leatherback sea turtle sex ratios using spatial interpolation of nesting beach temperatures.
Creator: Weston, Emily G., Wyneken, Jeanette, Charles E. Schmidt College of Science, Department of Biological Sciences
Abstract/Description: Sex determination in leatherback sea turtles is directed primarily by the temperatures a clutch experiences during the middle third of development. Warmer temperatures tend to produce females will cooler temperatures yield males. Nest temperatures can vary spatially and temporally. During the 2010 and 2011 nesting seasons, this study estimated the hatchling sex ratio of leatherback sea turtles on Sandy Point National Wildlife Refuge (SPNWR), St. Croix, U.S. Virgin Islands. I measured sand...
Show moreSex determination in leatherback sea turtles is directed primarily by the temperatures a clutch experiences during the middle third of development. Warmer temperatures tend to produce females will cooler temperatures yield males. Nest temperatures can vary spatially and temporally. During the 2010 and 2011 nesting seasons, this study estimated the hatchling sex ratio of leatherback sea turtles on Sandy Point National Wildlife Refuge (SPNWR), St. Croix, U.S. Virgin Islands. I measured sand temperatures from May- August and across the spatial range of leatherback nesting habitat. I spatially interpolated those temperatures to create maps that predicted temperatures for all nests incubating on SPWNR. Nest temperatures were also directly measured and compared with predicted nest temperatures to validate the prediction model. Sexes of dead-in-nest hatchlings and full term embryos were used to confirm the sex-temperature response. The model showed that microclimatic variation likely impacts the production of both sexes on SPNWR.
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Date Issued: 2013
PURL: http://purl.flvc.org/fau/fd/FA0004071
Subject Headings: Leatherback turtle -- Habitat -- St. Croix -- Sandy Point National Wildlife Refuge (United States Virgin Islands), Loggerhead turtle -- Effect of temperature on, Sandy Point National Wildlife Refuge (United States Virgin Islands), Sea turtles -- Nests -- St. Croix -- Sandy Point National Wildlife Refuge (United States Virgin Islands), Sex determination, Genetic, Sex ratios, Vegetation dynamics
Format: Document (PDF)

HBOI Faculty Contributions (28)	+ -
FAU Theses and Dissertations (23)	+ -
FAU Graduate Student Research (1)	+ -

Temperature (15)	+ -
Water temperature (11)	+ -
Salinity (6)	+ -
Larvae--Effect of temperature on (4)	+ -
Heat budget (Geophysics) (3)	+ -

Heat flux (3)	+ -
Humidity (3)	+ -
Indian River (Fla. : Lagoon) (3)	+ -
Larvae (3)	+ -
Thermodynamics (3)	+ -
Carbon dioxide (2)	+ -
Coral bleaching (2)	+ -
Eggs--Incubation (2)	+ -
Estuaries (2)	+ -
Exuma (Bahamas) (2)	+ -
Fire resistant materials (2)	+ -
Heat --Transmission (2)	+ -
Heat engineering (2)	+ -
High temperature superconductors (2)	+ -
Loggerhead turtle (2)	+ -
Marine ecology (2)	+ -
Meteorological data (2)	+ -
Reinforced concrete (2)	+ -
Sea urchins--Embryos (2)	+ -
Sex determination, Genetic (2)	+ -
Shrimps (2)	+ -
Temperature measurements (2)	+ -
Time-series analysis (2)	+ -
Agar (1)	+ -
Aquaculture (1)	+ -

Florida (2)	+ -
United States (2)	+ -

article (28)	+ -
Electronic Thesis or Dissertation (23)	+ -
abstract (1)	+ -

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