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Title: A comparison of the ontogeny of energy consumption in leatherback, Dermochelys coriacea and olive ridley, Lepidochelys olivacea sea turtle hatchlings.
Creator: Jones, T. Todd, Florida Atlantic University, Lutz, Peter L., Charles E. Schmidt College of Science, Department of Biological Sciences
Abstract/Description: Changes in activity related oxygen consumption and energy partitioning were measured in leatherback and olive ridley sea turtle hatchlings over their first month after nest emergence. Leatherbacks emerge with about 75--90 KJ of energy in the residual yolk at their disposal for growth and movement. In comparison, the residual yolk energy reserves for the olive ridley are estimated to be much less (45 KJ). In leatherbacks resting specific oxygen consumption rates decreased by 53% over the first...
Show moreChanges in activity related oxygen consumption and energy partitioning were measured in leatherback and olive ridley sea turtle hatchlings over their first month after nest emergence. Leatherbacks emerge with about 75--90 KJ of energy in the residual yolk at their disposal for growth and movement. In comparison, the residual yolk energy reserves for the olive ridley are estimated to be much less (45 KJ). In leatherbacks resting specific oxygen consumption rates decreased by 53% over the first post-hatching month (0.0065 ml O2 min-1 g-1--0.0031 ml O2 min-1 g-1), while for ridleys the fall was 32% (0.0038 ml O2 min-1 g-1--0.0026 ml O2 min-1 g-1). Greater differences were seen in aerobic scope. For olive ridleys the factorial aerobic scope doubled over the first month but there was no significant increase in the leatherback's factorial aerobic scope. Leatherback hatchlings gained on average 33% body mass (10 g) over the first week however 70 to 80% of this increase was due to water accumulation. The differences in aerobic scope and energy reserves are related to differences in early life ecological stratagems of these species.
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Date Issued: 2004
PURL: http://purl.flvc.org/fcla/dt/13139
Subject Headings: Sea turtles--Ecology, Animal behavior, Ontogeny, Developmental biology, Adaptation (Physiology), Ecophysiology
Format: Document (PDF)

Title: Manganese-promoted rearrangement of alkynyl carbonyls to allenyl carbonyls with emphasis on asymmetric induction using chiral bases.
Creator: Khoram, Anita, Florida Atlantic University, Lepore, Salvatore D., Charles E. Schmidt College of Science, Department of Chemistry and Biochemistry
Abstract/Description: The conversion of alkynyl carbonyls to allenyl carbonyls via manganese mediated coordinations followed by a based-catalyzed isomerization was carried out using a range of chiral and achiral amine bases. In this work we employed HPLC equipped with a chiral column to determine the enantiomeric excess. Deuterium labeling experiments suggested that the alkyne/allene rearrangement reaction involved an intermediate cumenolate. We also demonstrated that the reaction required a ligand on manganese...
Show moreThe conversion of alkynyl carbonyls to allenyl carbonyls via manganese mediated coordinations followed by a based-catalyzed isomerization was carried out using a range of chiral and achiral amine bases. In this work we employed HPLC equipped with a chiral column to determine the enantiomeric excess. Deuterium labeling experiments suggested that the alkyne/allene rearrangement reaction involved an intermediate cumenolate. We also demonstrated that the reaction required a ligand on manganese for an amine base to be used catalytically. Phosphines were tested as a possible ligand because they are neutral two electron donors that binds to transition metals through their lone pairs. It was observed that the rate of the reaction decreased from 24hr to 3hr by use of phosphine as a ligand. It was also confirmed that amine base with pKa lower then DBU (pKa = 13.6) would not carry out the isomerization. Chiral amidine and chiral DBU derivatives were synthesized to carry out the isomerization enantioselectively. Alkoxy base were also used in isomerization that demonstrated enantioselectivity.
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Date Issued: 2004
PURL: http://purl.flvc.org/fcla/dt/13158
Subject Headings: Carbonyl compounds--Synthesis, Organic compounds--Synthesis, Allene, Alkenes, Methathesis (Chemistry), Isomerism
Format: Document (PDF)

Title: Effects of upper respiratory tract disease on the demographics of a gopher tortoise (Gopherus polyphemus) population in south Florida.
Creator: Karlin, Melissa Lynn, Florida Atlantic University, Moore, Jon, Charles E. Schmidt College of Science, Department of Biological Sciences
Abstract/Description: Upper Respiratory Tract Disease is a highly contagious bacteria observed in gopher tortoise populations in Florida as early as 1989. In this study, 40 plasma samples were collected from a population to determine the effects on different age classes and genders. Results suggest adults are more susceptible to the disease and there is not a significant difference in the number of infected males and females. All subadults tested in this population were free of the disease. The effect on growth...
Show moreUpper Respiratory Tract Disease is a highly contagious bacteria observed in gopher tortoise populations in Florida as early as 1989. In this study, 40 plasma samples were collected from a population to determine the effects on different age classes and genders. Results suggest adults are more susceptible to the disease and there is not a significant difference in the number of infected males and females. All subadults tested in this population were free of the disease. The effect on growth rate was negligible; seropositive and seronegative individuals did not exhibit statistically significant differences in growth rates. In addition, an analysis of home range size reveals that adult males have the greatest home range size, which may provide a route for disease transmission to other adults. The long-term effects of URTD are still unknown; however, this data suggests a zero known mortality rate due to URTD over a four-year period.
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Date Issued: 2005
PURL: http://purl.flvc.org/fcla/dt/13258
Subject Headings: Gopher tortoise--Diseases, Mycoplasma diseases in animals--Florida
Format: Document (PDF)

Title: Children attend to intrinsic motions when learning nouns.
Creator: Iglesias, Adam, Florida Atlantic University, Kersten, Alan, Charles E. Schmidt College of Science, Department of Psychology
Abstract/Description: The present research was designed to test whether 3-year-old-English-speaking children preferentially associate novel nouns with intrinsic motion rather than extrinsic motion, as predicted by the theory of Kersten (1998). Intrinsic motion refers to the ways the parts of an object move in relation to one another. In contrast, extrinsic motion refers to the motion of an object as a whole with respect to an external reference point (e.g. another object). In two separate experiments, we...
Show moreThe present research was designed to test whether 3-year-old-English-speaking children preferentially associate novel nouns with intrinsic motion rather than extrinsic motion, as predicted by the theory of Kersten (1998). Intrinsic motion refers to the ways the parts of an object move in relation to one another. In contrast, extrinsic motion refers to the motion of an object as a whole with respect to an external reference point (e.g. another object). In two separate experiments, we demonstrated that nouns are associated with intrinsic motion and verbs are associated with extrinsic motion. Specifically, children were able to detect differences between stimuli paired with novel nouns based on intrinsic motion and stimuli paired with novel verbs based on extrinsic motion. In other words, we shed light on the different motion cues children attend to when learning nouns and verbs. Thus, children utilize motion cues in addition to static characteristics when learning nouns and verbs. Therefore, distinct types of motion information play an important role in the learning of nouns and verbs.
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Date Issued: 2005
PURL: http://purl.flvc.org/fcla/dt/13270
Subject Headings: Motion, Vocabulary--Study and teaching (Primary), Language acquisition
Format: Document (PDF)

Title: Does children's attachment style influence children's perception of the parent?.
Creator: Kabbas, Diane R., Florida Atlantic University, Perry, David G., Charles E. Schmidt College of Science, Department of Psychology
Abstract/Description: This thesis examined the possibility of meaningful associations between children's attachment styles in middle childhood and children's perceptions of the parent. Participants were 199 students (94 males, 105 females) in grades three through eight (mean age = 11.03 years) from a Florida university school. The children were administered self-report measures and peer-report nomination measures. Five attachment coping strategies (preoccupied, indecisive, avoidant, coercive, and caregiving) and...
Show moreThis thesis examined the possibility of meaningful associations between children's attachment styles in middle childhood and children's perceptions of the parent. Participants were 199 students (94 males, 105 females) in grades three through eight (mean age = 11.03 years) from a Florida university school. The children were administered self-report measures and peer-report nomination measures. Five attachment coping strategies (preoccupied, indecisive, avoidant, coercive, and caregiving) and four aspects of perceived maternal behavior (reliable support, overprotection, harassment, and fear induction) were assessed and numerous and meaningful associations were found. For example, perceived maternal overprotection was positively associated with preoccupied coping. Significant associations were also found between our avoidant, coercive, indecisive, and caregiving coping measures and perceived maternal reliable support, harassment, and fear induction. Our numerous and significant findings lend further support for the usefulness and value of our concurrent correlational self-report measures and to justify future longitudinal research to compare alternative models.
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Date Issued: 2005
PURL: http://purl.flvc.org/fcla/dt/13271
Subject Headings: Attachment behavior in children, Parent and child--Research, Adjustment (Psychology), Attachment behavior in adolescence, Mother and child, Child development
Format: Document (PDF)

Title: Specific dynamic action in hatchling and post-hatchling green (Chelonia mydas) and loggerhead (Caretta caretta ) sea turtles.
Creator: Kowalski, Amy, Florida Atlantic University, Milton, Sarah L., Charles E. Schmidt College of Science, Department of Biological Sciences
Abstract/Description: Specific dynamic action (SDA) describes a post-feeding increase in oxygen consumption where most energy derived from food is allocated to post-absorptive processes, including growth and maintenance. SDA and growth in hatchling sea turtles is of special interest because they experience drastic changes in diet, oxygen availability and habitat during the first several months of life. This study investigated SDA variation between species and among age groups. SDA was quantified in two species of...
Show moreSpecific dynamic action (SDA) describes a post-feeding increase in oxygen consumption where most energy derived from food is allocated to post-absorptive processes, including growth and maintenance. SDA and growth in hatchling sea turtles is of special interest because they experience drastic changes in diet, oxygen availability and habitat during the first several months of life. This study investigated SDA variation between species and among age groups. SDA was quantified in two species of sea turtle (Chelonia mydas, Caretta caretta) at 7, 30, 60, & 90 days post-hatching. Turtles were fed a known amount of food, and oxygen consumption was monitored using a metabolic chamber. SDA percentage of total energy did not increase with age (species pooled), although magnitude of SDA was higher in C. mydas when compared to C. caretta (ages pooled). These results imply that SDA does not increase proportionally with age, and that hatchling C. mydas use more absolute energy for SDA than C. caretta .
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Date Issued: 2005
PURL: http://purl.flvc.org/fcla/dt/13283
Subject Headings: Adaptation (Biology), Sea turtles--Feeding and feeds, Physiology, Comparative, Sea turtles--Ecology
Format: Document (PDF)

Title: Diterpene biosynthesis in early ontogenetic stages of Pseudopterogorgia elisabethae and Pseudopterogorgia bipinnata.
Creator: Mukherjee, Maia Stapleton, Florida Atlantic University, Charles E. Schmidt College of Science, Department of Chemistry and Biochemistry
Abstract/Description: There is growing evidence that secondary metabolites isolated from some marine invertebrates may actually be produced by a symbiont. The capacity of early ontogenetic stages of Pseudopterogorgia elisabethae and Pseudopterogorgia bipinnata to biosynthesize biologically active and pharmaceutically important diterpenes was examined. These early life stages lack the algal symbionts found in adult colonies of the species, thus removing one level of complexity. The larvae and polyps of these two...
Show moreThere is growing evidence that secondary metabolites isolated from some marine invertebrates may actually be produced by a symbiont. The capacity of early ontogenetic stages of Pseudopterogorgia elisabethae and Pseudopterogorgia bipinnata to biosynthesize biologically active and pharmaceutically important diterpenes was examined. These early life stages lack the algal symbionts found in adult colonies of the species, thus removing one level of complexity. The larvae and polyps of these two species produced high concentrations of the diterpenoid secondary metabolites, one of which proved to significantly deter fish-feeding in in situ feeding assays. Additionally, a novel cembrenoid diterpene was isolated from P. bipinnata. The structure of this compound, bipinnatolide L (40) was solved using 1D and 2D NMR experiments.
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Date Issued: 2005
PURL: http://purl.flvc.org/fcla/dt/13297
Subject Headings: Chemistry, Biochemistry
Format: Document (PDF)

Title: The effect of age on processing family, famous and novel faces: An fMRI study.
Creator: Jones, Lana Casey, Florida Atlantic University, Tuller, Betty, Charles E. Schmidt College of Science, Department of Psychology
Abstract/Description: Facial recognition memory is a specialized system in the human brain, with an effect of familiarity playing a role in the brain activations involved. Previous studies examining the familiar face processing system have used college-aged subjects. However, memory disorders, like those associated with Alzheimer's disease, typically affect adults over sixty. In an attempt to reveal possible differences between young and older adults', two different age groups were subjected to fMRI analysis while...
Show moreFacial recognition memory is a specialized system in the human brain, with an effect of familiarity playing a role in the brain activations involved. Previous studies examining the familiar face processing system have used college-aged subjects. However, memory disorders, like those associated with Alzheimer's disease, typically affect adults over sixty. In an attempt to reveal possible differences between young and older adults', two different age groups were subjected to fMRI analysis while viewing face images with varying familiarity (family, famous and novel). The result showed a significant difference in activations for various cortical areas including the precuneus, cingulate cortex, and fusiform gyrus. Among the differences, an overall trend of greater activation in the left hemisphere for younger subjects compared to the older group was revealed. The results have implications for the study of memory disorders afflicting older adults, like Alzheimer's disease.
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Date Issued: 2006
PURL: http://purl.flvc.org/fcla/dt/13358
Subject Headings: Brain--Magnetic resonance imaging, Evoked potentials (Electrophysiology), Memory, Cognition--Age factors, Aging--Psychological aspects, Memory disorders in old age
Format: Document (PDF)

Title: Global feedback in hierarchical motion pattern formation.
Creator: Brownlow, Stacey W., Florida Atlantic University, Hock, Howard S., Charles E. Schmidt College of Science, Department of Psychology
Abstract/Description: An array of four motion quartets (stimuli for which either horizontal or vertical motion is perceived depending on quartet aspect ratio) is arranged in a diamond configuration such that two global motion patterns are formed: (1) Rotation---alternating counterclockwise and clockwise motion is perceived, and (2) Parallel path motion---the perceived motions of all the elements are simultaneously horizontal or simultaneously vertical. The perception of rotation resulted in global feedback that...
Show moreAn array of four motion quartets (stimuli for which either horizontal or vertical motion is perceived depending on quartet aspect ratio) is arranged in a diamond configuration such that two global motion patterns are formed: (1) Rotation---alternating counterclockwise and clockwise motion is perceived, and (2) Parallel path motion---the perceived motions of all the elements are simultaneously horizontal or simultaneously vertical. The perception of rotation resulted in global feedback that biases the motion perceived for an individual component motion quartet to be more consistent with rotation than aspect ratio. Stronger rotation produced greater bias. Under certain conditions, the feedback-induced bias occurred even though global rotation was not perceived. The results were interpreted in the context of neurophysiological evidence regarding neurons in Areas MT and MSTd, and a dynamical theory of motion pattern formation (Hock, Schoner & Giese, 2003; Nichols, Hock & Schoner, 2006).
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Date Issued: 2006
PURL: http://purl.flvc.org/fcla/dt/13371
Subject Headings: Motion perception (Vision)--Mathematical models, Visual pathways, Neurophysiology, Nonlinear chemical kinetics
Format: Document (PDF)

Title: The role of chemical and visual cues by two Sargassum shrimps in locating and selecting habitats.
Creator: Jobe, Corrine F., Florida Atlantic University, Brooks, W. Randy, Charles E. Schmidt College of Science, Department of Biological Sciences
Abstract/Description: The Sargassum community is comprised of a unique and diverse assemblage of organisms. Habitat detection by two of the most common invertebrates, Latreutes fucorum and Leander tenuicornis , was investigated. Results of this study do not support that either L. fucorum or L. tenuicornis respond to chemical cues released by the Sargassum habitat in the absence of other information. Habitat selection of both shrimp species was examined as well. Both L. fucorum and L. tenuicornis selected live...
Show moreThe Sargassum community is comprised of a unique and diverse assemblage of organisms. Habitat detection by two of the most common invertebrates, Latreutes fucorum and Leander tenuicornis , was investigated. Results of this study do not support that either L. fucorum or L. tenuicornis respond to chemical cues released by the Sargassum habitat in the absence of other information. Habitat selection of both shrimp species was examined as well. Both L. fucorum and L. tenuicornis selected live Sargassum over artificial Sargassum . Moreover, L. fucorum selected Sargassum natans over Sargassum fluitans when only visual cues were available, whereas large-sized L. tenuicornis selected S. fluitans under the same conditions. Conversely, habitat selection trials combining both chemical and visual cues resulted in no preference between the two Sargassum species by either shrimp species. Additional ecological factors that possibly influence habitat location and selection are discussed as well as the importance of Sargassum in terms of pelagic fisheries management.
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Date Issued: 2006
PURL: http://purl.flvc.org/fcla/dt/13381
Subject Headings: Habitat (Ecology), Sargassum, Marine chemical ecology, Animal behavior
Format: Document (PDF)

Title: An exploratory investigation of sources of individual differences in chemistry performance: The potential role of visual and verbal working memory and student affect in chemistry problem solving.
Creator: Klein, Jason, Florida Atlantic University, Hecht, Steven A., Charles E. Schmidt College of Science, Department of Psychology
Abstract/Description: This was an exploratory study of factors that predict individual differences in chemistry learning. Consistent with cognitive learning theory, working memory was assumed to be an important predictor of chemistry knowledge. Measures of chemistry affect, cognitive ability, demographics and mathematical ability were examined in relation to visual/schematic and algebra-like stoichiometry chemistry word problem solving ability and strategy use. 139 undergraduate students (91 females, 48 males) at...
Show moreThis was an exploratory study of factors that predict individual differences in chemistry learning. Consistent with cognitive learning theory, working memory was assumed to be an important predictor of chemistry knowledge. Measures of chemistry affect, cognitive ability, demographics and mathematical ability were examined in relation to visual/schematic and algebra-like stoichiometry chemistry word problem solving ability and strategy use. 139 undergraduate students (91 females, 48 males) at a major Southeastern university participated in this study (Age ranged from 18 to 39 years (M = 20.70 years of age)). Perceived usefulness of the chemistry material, mathematical ability, GPA, and SGPA uniquely predicted conceptual stoichiometry problem solving ability.
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Date Issued: 2006
PURL: http://purl.flvc.org/fcla/dt/13382
Subject Headings: Reasoning (Psychology), Chemistry--Study and teaching (Secondary), Thought and thinking, Problem solving, Creative ability in technology
Format: Document (PDF)

Title: Phytochemical-induced apoptotic cell death in breast cancer cells.
Creator: Hörmann, Vanessa P., Florida Atlantic University, Charles E. Schmidt College of Science, Department of Biological Sciences
Abstract/Description: Breast cancer is the most common malignant cancer and leading cause of death in women between the ages of 40 and 55. Among dietary phytochemicals with demonstrated anti-tumor activities are genistein (4', 5', 7-trihydroxyisoflavone) and pomegranate (punica granatum). The present study was to demonstrate the potential anticancer activities of genistein and pomegranate and the mechanism of action in human breast cancer cells. Study design. MCF-7 cells were grown in RPMI medium and then seeded...
Show moreBreast cancer is the most common malignant cancer and leading cause of death in women between the ages of 40 and 55. Among dietary phytochemicals with demonstrated anti-tumor activities are genistein (4', 5', 7-trihydroxyisoflavone) and pomegranate (punica granatum). The present study was to demonstrate the potential anticancer activities of genistein and pomegranate and the mechanism of action in human breast cancer cells. Study design. MCF-7 cells were grown in RPMI medium and then seeded in 48-well MTP, and cultured at 37C, 5% CO2 for 36hr to achieve 80-90% confluence. The cells were then exposed to varying concentrations of genistein and pomegranate for 24 and 48hr. The treated cells were tested for (i) post-treatment sensitivity using MTT and Trypan Blue exclusion assay, and (ii) treatment-induced apoptosis using Rh123, Acridine Orange-Ethidium Bromide nuclear stains and Caspase binding assay. Results. Data indicated that both compounds effectively killed cancer cells mostly via apoptosis induction.
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Date Issued: 2006
PURL: http://purl.flvc.org/fcla/dt/13391
Subject Headings: Biology, Cell, Biology, Physiology, Health Sciences, Oncology
Format: Document (PDF)

Title: Now you hear it, now you don't: The effect of markedness on the perception of unattested clusters.
Creator: Lennertz, Tracy J., Florida Atlantic University, Berent, Iris, Charles E. Schmidt College of Science, Department of Psychology
Abstract/Description: Linguistic theory predicts that speakers are equipped with universal sonority principles that restrict the structure of the syllable: onset clusters with sonority rises are preferred to onsets with plateaus, which are preferred to onsets with falling sonority (bn > bd > lb). We investigate the source of this preference in English, a language in which these sonority profiles are unattested. We gauged speakers' preferences for unattested onsets by examining their susceptibility to epenthetic...
Show moreLinguistic theory predicts that speakers are equipped with universal sonority principles that restrict the structure of the syllable: onset clusters with sonority rises are preferred to onsets with plateaus, which are preferred to onsets with falling sonority (bn > bd > lb). We investigate the source of this preference in English, a language in which these sonority profiles are unattested. We gauged speakers' preferences for unattested onsets by examining their susceptibility to epenthetic repair. If English speakers are sensitive to onset structure, then onsets that are universally dispreferred should be more likely to elicit repair (e.g., lbif→lebif). Results from a syllable judgment task and an identity task support our predictions: onsets of rising sonority are perceived more accurately compared to onsets with sonority plateaus, which, in turn, are perceived more accurately compared to onsets with sonority falls. Our findings suggest that speakers are equipped with phonological preferences for sonority profiles that are unattested in their language.
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Date Issued: 2006
PURL: http://purl.flvc.org/fcla/dt/13392
Subject Headings: Markedness (Linguistics), Grammar, Comparative and general--Phonology, Tone (Phonetics), Lexical phonology, Optimality theory (Linguistics)
Format: Document (PDF)

Title: THE RELATIVE EFFICIENCIES OF TWO PROCEDURES FOR THE EXTINCTION OF DISCRIMINATED AVOIDANCE CONDITIONING.
Creator: JACKSON, MASON CALVIN, JR., Florida Atlantic University, Otten, Cynthia S., Charles E. Schmidt College of Science, Department of Psychology
Abstract/Description: Eighteen rats were used to study two procedures for the extinction of discriminated avoidance. One group (OE) was placed on extinction defined by presenting shocks as programmed but independently of the S's responses, while the other group (CE) was placed on classical extinction defined by the removal of all shocks. The two procedures were compared in terms of rate of decline and terminal level of extinction performance. In addition, the two groups were placed on a discrimination reversal...
Show moreEighteen rats were used to study two procedures for the extinction of discriminated avoidance. One group (OE) was placed on extinction defined by presenting shocks as programmed but independently of the S's responses, while the other group (CE) was placed on classical extinction defined by the removal of all shocks. The two procedures were compared in terms of rate of decline and terminal level of extinction performance. In addition, the two groups were placed on a discrimination reversal task in order to assess each procedure's effects on a new learning problem. The CE group reached a lower level of extinction performance in a fewer number of blocks than the OE Ss. Furthermore, the CE Ss were inferior to the OE Ss in terms of discrimination reversal performance as well. An interpretation of the results in terms of the removal and reinstatement of cues was offered although an alternative explanation relating to a change in the motivational states of the two groups during extinction was also presented. The interpretation in terms of the presence or absence of cues seemed to account for more of the present findings than the traditional one advocating changes in motivational levels resulting from the two divergent extinction operations.
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Date Issued: 1971
PURL: http://purl.flvc.org/fcla/dt/13433
Subject Headings: Extinction (Psychology), Discrimination learning, Avoidance (Psychology)
Format: Document (PDF)

Title: THE EFFECT OF TEMPERATURE, HYDROGEN ION AND CERTAIN GROWTH SUBSTRATES ON THE ACTIVITY OF THE CELLULOLYTIC ENZYME COMPLEX IN SELECTED MARINE FUNGI.
Creator: JENSEN, JAMES ROBERT, Florida Atlantic University, Sguros, Peter L., Charles E. Schmidt College of Science, Department of Biological Sciences
Abstract/Description: Halosphaeria mediosetigera and Culcitalna achraspora have been studied to elucidate the mechanism by which they degrade cellulosic materials in the sea. H. mediosetigera (700 LC 1), a C1-less variant, was also employed in this work. Standardized shake-cultures were grown on cellulose and cellulose derivatives supplemented with NH4N03, tris(hydroxymethyl)aminomethane and yeast extract in artificial sea water (Lyman and Fleming), pH 7.5, at 25 C. Induced C1 and Cx enzyme and cellobiase...
Show moreHalosphaeria mediosetigera and Culcitalna achraspora have been studied to elucidate the mechanism by which they degrade cellulosic materials in the sea. H. mediosetigera (700 LC 1), a C1-less variant, was also employed in this work. Standardized shake-cultures were grown on cellulose and cellulose derivatives supplemented with NH4N03, tris(hydroxymethyl)aminomethane and yeast extract in artificial sea water (Lyman and Fleming), pH 7.5, at 25 C. Induced C1 and Cx enzyme and cellobiase activities were determined calorimetrically by correlation with cotton fiber weight loss, by the formation of reducing sugars from carboxymethylcellulose and by Glucostat, respectively. Optimum pH values for both Cx enzyme and cellobiase of C. achraspora were 6.0 at 37 C while those for H. mediosetigera (700 LC 1) were 5.0 and 6.0, respectively, at 37 C. In both cultures, Cx enzymes had a variable optimum temperature ( 37-50 C) at pH 6.0, depending on the length of the incubation period, while cellobiases had the same optimum temperature (50 C) at pH 6.0. Thermostability observations on Cx enzyme and cellobiase of C. achraspora showed almost complete deactivation at 100 C in 15 min for the former and 50 C in 15 min for the latter. Thermostability observations on Cx enzyme and cellobiase of H. mediosetigera (700 LC 1) showed almost complete deactivation at 45 C in 15 min for the former and at 50 C in 15 min for the latter. Data indicate that at least three enzymatic functions are involved in cellulose breakdown by these cultures.
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Date Issued: 1971
PURL: http://purl.flvc.org/fcla/dt/13434
Subject Headings: Marine fungi, Cellulose--Biodegradation
Format: Document (PDF)

Title: POLARIZED CRYSTAL SPECTRA OF QUADRATE CHROMIUM(III) COMPLEXES.
Creator: KLEIN, ROBERT LEWIS, JR., Florida Atlantic University, Perumareddi, Jayarama R., Charles E. Schmidt College of Science, Department of Chemistry and Biochemistry
Abstract/Description: The polarized crystal spectra of a series of tetragonal trans- diacidobis (ethylenediamine) chromium (III) complexes, trans-[Cr(en)2XY], where X= Y = Br-, H2O, F-, Cl- and X= H2O, Y = OH-, F-, have been measured at liquid nitrogen temperature, achieving better resolution of the split components of the cubic spin-allowed bands, and also definite energy level assignments. The observed band positions have been fitted with the predicted transition energies by the use of the appropriate energy...
Show moreThe polarized crystal spectra of a series of tetragonal trans- diacidobis (ethylenediamine) chromium (III) complexes, trans-[Cr(en)2XY], where X= Y = Br-, H2O, F-, Cl- and X= H2O, Y = OH-, F-, have been measured at liquid nitrogen temperature, achieving better resolution of the split components of the cubic spin-allowed bands, and also definite energy level assignments. The observed band positions have been fitted with the predicted transition energies by the use of the appropriate energy equations for d^3 configuration immersed in tetragonal fields with full configuration interaction. The ligand field parameters, which include the cubic and axial, and the electron correlation parameter B have been evaluated by such a fitting. The derived parameters have been analyzed and their significance discussed. Using thick crystals, we have uncovered a rich doublet structure in some of the complexes and tentative values of the electron correlation parameter C have been obtained for all the complexes.
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Date Issued: 1971
PURL: http://purl.flvc.org/fcla/dt/13454
Subject Headings: Chromium
Format: Document (PDF)

Title: ANASTASIA ISLAND, FLORIDA: A CASE STUDY IN HISTORICAL PERCEPTION OF RESOURCES AND RESISTANCES.
Creator: KIXMILLER, PATRICIA ELAINE., Florida Atlantic University, Lee, David R., Charles E. Schmidt College of Science, Department of Geosciences
Abstract/Description: This study was undertaken to determine the effects historical perception of resources and resistances (hazards) have on the development of a site. Perception was determined from the reactions each group of settlers had to this environment. It was determined that perception played a major role in the development of the particular site under consideration in this study. Anastasia Island, Florida (the study area) is located across the Intracoastal Waterway from St. Augustine, Florida. A complete...
Show moreThis study was undertaken to determine the effects historical perception of resources and resistances (hazards) have on the development of a site. Perception was determined from the reactions each group of settlers had to this environment. It was determined that perception played a major role in the development of the particular site under consideration in this study. Anastasia Island, Florida (the study area) is located across the Intracoastal Waterway from St. Augustine, Florida. A complete history of Anastasia Island is included in the study from pre-Spanish times to the present. Several maps are also included which trace the development of Anastasia Island over the past 400 years.
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Date Issued: 1973
PURL: http://purl.flvc.org/fcla/dt/13573
Subject Headings: Anastasia Island (Fla)
Format: Document (PDF)

Title: THE EFFECTS OF PROGESTERONE, TESTOSTERONE, AND DIHYDROTESTOSTERONE ON THE MALE AND FEMALE SEXUAL BEHAVIOR OF THE FEMALE RAT.
Creator: KAPLAN, PETER L., Florida Atlantic University, Singer, Jay J., Charles E. Schmidt College of Science, Department of Psychology
Abstract/Description: Twenty-six 75-day-old, ovariectomized Long-Evans female rats were randomly divided into two groups of ten and one group of six animals. The ten Group I Ss received, in consecutive treatment periods, 2 mg progesterone (P-2) daily, 2 mg testosterone propiorate (TP-2) daily, TP-2 daily plus P-2 every fourth day, and P-2 every fourth day. The ten Group II Ss received, in consecutive treatment periods, P-2 every fourth day, and 4 mg dihydrotestosterone (DHT-4) daily plus P-2 every fourth day. Both...
Show moreTwenty-six 75-day-old, ovariectomized Long-Evans female rats were randomly divided into two groups of ten and one group of six animals. The ten Group I Ss received, in consecutive treatment periods, 2 mg progesterone (P-2) daily, 2 mg testosterone propiorate (TP-2) daily, TP-2 daily plus P-2 every fourth day, and P-2 every fourth day. The ten Group II Ss received, in consecutive treatment periods, P-2 every fourth day, and 4 mg dihydrotestosterone (DHT-4) daily plus P-2 every fourth day. Both Groups I and II were tested for female sexual behavior. A significant increase in the lordosis response was observed only in Group I Ss after receiving TP-2 plus P-2 every fourth day. Group III Ss were tested for male sexual behavior after receiving DHT-4 daily. Male sexual behavior increased significantly after DHT-4 treatments. It was concluded that progesterone exerts a facilitatory effect on female sexual behavior only when the Ss have been previously primed with an aromatizable androgen and that dihydrotestosterone is capable of inducing male sexual behavior in female rats.
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Date Issued: 1973
PURL: http://purl.flvc.org/fcla/dt/13576
Subject Headings: Sexual behavior in animals, Hormones, Sex
Format: Document (PDF)

Title: DEFENSIBLE SPACE IN A PRIVATELY-OWNED HOUSING PROJECT.
Creator: VANHORN, SHARYN J., Florida Atlantic University, Tata, Robert J., Charles E. Schmidt College of Science, Department of Geosciences
Abstract/Description: This paper analyzes a high density housing project in terms of its defensible space. The behavior of residents of Citrus Park Homes was seen as indicative of tenant attitudes toward their home project, its sense of community, of safety and security, and pride of ownership. Analysis of this privately-owned project includes a description of the physical structure, spatial characteristics, tenant characteristics and tenant attitudes, as evidenced in interviews with 83 adult residents. Where poor...
Show moreThis paper analyzes a high density housing project in terms of its defensible space. The behavior of residents of Citrus Park Homes was seen as indicative of tenant attitudes toward their home project, its sense of community, of safety and security, and pride of ownership. Analysis of this privately-owned project includes a description of the physical structure, spatial characteristics, tenant characteristics and tenant attitudes, as evidenced in interviews with 83 adult residents. Where poor spatial design and physical structure are evidenced by poor behavior and attitude (lack of recognition or acceptance of territory) changes in the spatial or architectural design were suggested.
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Date Issued: 1973
PURL: http://purl.flvc.org/fcla/dt/13618
Subject Headings: Human territoriality, Geographical perception
Format: Document (PDF)

Title: ATOMIC MOLECULAR THEORY: A PROGRAMMED TEXT USED IN THE TEACHING OF BASIC ATOMIC AND MOLECULAR ORBITAL THEORY IN A HIGH SCHOOL PROGRAM OF CHEMISTRY.
Creator: SEVERANCE, H. WILSON, JR., Florida Atlantic University, Charles E. Schmidt College of Science, Department of Chemistry and Biochemistry
Abstract/Description: This program was developed from necessity found in the teaching of molecular geometry to high school chemistry classes. Recent journals and textbooks were consulted in evaluation of the modern emphasis on instruction in molecular geometry at the high school level, and the topic was then developed fully for use in the chemistry course at the Ransom School, serving as a base for other instructional units. A self-teaching concept was employed in this manual in order that the student might...
Show moreThis program was developed from necessity found in the teaching of molecular geometry to high school chemistry classes. Recent journals and textbooks were consulted in evaluation of the modern emphasis on instruction in molecular geometry at the high school level, and the topic was then developed fully for use in the chemistry course at the Ransom School, serving as a base for other instructional units. A self-teaching concept was employed in this manual in order that the student might proceed at his own pace and according to his own needs. The principal intention was to familiarize the student with the shapes and configurations of various molecules and thereby to give him greater insight into the physical picture of molecular interaction in chemical reaction.
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Date Issued: 1974
PURL: http://purl.flvc.org/fcla/dt/13656
Subject Headings: Molecular orbitals--Study and teaching (Secondary), Chemistry--Study and teaching (Secondary)--Programmed instruction, Atomic theory--Study and teaching (Secondary)
Format: Document (PDF)

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