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Articles 1 - 9 of 9
Full-Text Articles in Life Sciences
A Comparison Of Job Responsibility And Activities Between Registered Dietitians With A Bachelor's Degree And Those With A Master's Degree, Stephanie M. Pillow
A Comparison Of Job Responsibility And Activities Between Registered Dietitians With A Bachelor's Degree And Those With A Master's Degree, Stephanie M. Pillow
FIU Electronic Theses and Dissertations
Minimal educational requirements for Registered Dietitians (RDs) include a bachelor’s degree and practice program. Recently, a master’s degree was recommended. Studies have not established whether education affects employment. A secondary analysis of 2005 Dietetics Practice Audit data determined whether job responsibility, individuals supervised, and activities differed between 1,626 bachelor’s RDs (B-RDs) and 767 master’s (M-RDs) RDs, registered ≤5 years. Chi-square and ANOVA analyzed differences between B-RDs and M-RDs, at entry-level (0-3 years experience) and beyond-entry-level (3+-5 years experience). Beyond-entry-level B-RDs (31.8%) and entry-level M-RDs (31.9%) reported “supervisor/executive” responsibility more than entry-level B-RDs (26.5%; p=0.01). A higher percentage of M-RDs supervised …
Bilirubin: An Animal Pigment In The Zingiberales And Diverse Angiosperm Orders, Cary L. Pirone
Bilirubin: An Animal Pigment In The Zingiberales And Diverse Angiosperm Orders, Cary L. Pirone
FIU Electronic Theses and Dissertations
Strelitziaceae is a tropical monocot family comprising three genera and seven species: Ravenala Adans and Phenkospermum Endl., which are monotypic, and five species of Strelitzia Aiton. All species produce woody capsular fruits that contain vibrantly colored arillate seeds. Arils of the Strelitzia species are orange, those of Phenakospermum are red, and those of Ravenala are blue. Unlike most plant pigments, which degrade after cell death, aril pigments in the family persist for decades. Chemical properties of the compounds are unusual, and do not match those of known pigment classes (carotenoids, flavonoids, betalains, and the chlorophylls). I isolated the orange pigment …
Arctic Ecosystem Responses To Changes In Water Availability And Warming: Short And Long-Term Responses, Paulo C. Olivas
Arctic Ecosystem Responses To Changes In Water Availability And Warming: Short And Long-Term Responses, Paulo C. Olivas
FIU Electronic Theses and Dissertations
Arctic soils store close to 14% of the global soil carbon. Most of arctic carbon is stored below ground in the permafrost. With climate warming the decomposition of the soil carbon could represent a significant positive feedback to global greenhouse warming. Recent evidence has shown that the temperature of the Arctic is already increasing, and this change is associated mostly with anthropogenic activities. Warmer soils will contribute to permafrost degradation and accelerate organic matter decay and thus increase the flux of carbon dioxide and methane into the atmosphere. Temperature and water availability are also important drivers of ecosystem performance, but …
Assessment Of Submerged Vegetation As Indicators Of Irgarol Contamination, Melissa V. Fernandez
Assessment Of Submerged Vegetation As Indicators Of Irgarol Contamination, Melissa V. Fernandez
FIU Electronic Theses and Dissertations
Irgarol 1051 is a common antifoulant toxic to certain marine organisms. Submerged aquatic vegetation (SAV) are exposed to this herbicide when it leaches into the marine environment from painted structures, making SAVs ideal candidates to function as sentinel indicator of contamination. In the initial stage of this study, Coconut Grove and Key Largo Harbor were assessed for environmental exposure to Irgarol. Water, sediment and SAVs were collected, the latter two subject to automated solid phase extraction, and all samples analyzed by GC/MS-SIM for Irgarol and its metabolite, M1. Of the vegetation analyzed, Halodule and Syringodium had the highest capacity to …
Characterization Of Oscillatoria Spp. And Their Role In Black Band Disease Of Coral, Dina Stanic
Characterization Of Oscillatoria Spp. And Their Role In Black Band Disease Of Coral, Dina Stanic
FIU Electronic Theses and Dissertations
Black band disease (BBD) is a cyanobacterial dominated pathogenic consortium that affects corals worldwide. Recently two cyanobacteria (Oscillatoria strains 101-1 and 100-1) were isolated into culture from BBD. The aim of this study was to characterize the strains and assess their role in BBD pathogenesis. Light, scanning electron and transmission electron microscopy, coupled with 16S rRNA gene sequencing, were used for taxonomic characterization. Cyanotoxin production was assessed by enzyme-linked immunosorbent assay. Toxin identification was performed by high performance liquid chromatography. The ability of the strains to initiate BBD was tested on host coral fragments of Siderastrea siderea and Diploria strigosa …
Molecular Characterization Of Gcc8 Alpha, The Functional Homologue Of Human C8 Alpha In The Shark, Ginglymostoma Cirratum, Lydia Tatiana Aybar
Molecular Characterization Of Gcc8 Alpha, The Functional Homologue Of Human C8 Alpha In The Shark, Ginglymostoma Cirratum, Lydia Tatiana Aybar
FIU Electronic Theses and Dissertations
The focus of this study is to elucidate the components of the nurse shark (Ginglymostoma cirratum) membrane attack complex (MAC), specifically complement component C8a (GcC8u). Nurse shark C8a gene was cloned, sequenced, and analyzed and Western blot analysis performed to identify components of shark MAC. GcC8a consists of 2341 nucleotides that translate into a 589 amino acid sequence that shares 41.1% and 47.4 % identity with human and xenopus C8a, respectively. GcC8a conserves the MAC modular architecture and cysteine-rich backbone characteristic of complement proteins, including the cysteine residue that forms the C8a-y bond as well as the indel that is …
The Interactive Effects Of Predators, Resources, And Disturbance On Freshwater Snail Populations From The Everglades, Clifton B. Ruehl
The Interactive Effects Of Predators, Resources, And Disturbance On Freshwater Snail Populations From The Everglades, Clifton B. Ruehl
FIU Electronic Theses and Dissertations
The origins of population dynamics depend on interplay between abiotic and biotic factors; the relative importance of each changing across space and time. Predation is a central feature of ecological communities that removes individuals (consumption) and alters prey traits (non-consumptive). Resource quality mitigates non-consumptive predator effects by stimulating growth and reproduction. Disturbance resets predator-prey interactions by removing both. I integrate experiments, time-series analysis, and performance trials to examine the relative importance of these on the population dynamics of a snail species by studying a variety of their traits. A review of ninety-three published articles revealed that snail abundance was much …
Effects Of Light And Nutrient Supply On Stable Isotope Composition And Fractionation In Nitrogen-Limited Seagrass Beds, Rebecca Jane Bernard
Effects Of Light And Nutrient Supply On Stable Isotope Composition And Fractionation In Nitrogen-Limited Seagrass Beds, Rebecca Jane Bernard
FIU Electronic Theses and Dissertations
This experiment investigated causes of seasonality of δ15N and δ13C values in Thalassia testudinum leaf tissue by manipulating plant demand and nutrient supply in situ for 13 months. I clearly demonstrated that seagrass elemental content, stable C and N isotopic content, morphology and the concentration of NH4+ seagrass porewaters directly respond to manipulations of resources and also by the plant demand for nutrients to support growth. Isotopic values displayed marked seasonality with heavier values found in summer (δ15N=5.0% δ13C=-5.7%o) and lighter values in winter (δ15N=1.7%o δ13C= …
The Perceptions, Attitudes And Practices Of Registered Dietitians Regarding Functional Foods, Amanda Berhaupt
The Perceptions, Attitudes And Practices Of Registered Dietitians Regarding Functional Foods, Amanda Berhaupt
FIU Electronic Theses and Dissertations
The term “functional food” (FF) has a variety of definitions resulting in term ambiguity. It is unclear Registered Dietitians’ (RDs) understanding and practices about FF. A descriptive, cross-sectional study investigated RDs’ perceptions, attitudes and practices regarding FF. A national random sample (n=1800) of RDs was mailed a FF questionnaire, 385 (22%) responded. Given five definitions from food-nutrition authorities, the majority of RDs did not agree on a definition, although three-fourths (n=292, 75.8%) perceived fortified foods as FF. Registered Dietitians agreed FF could improve health (n=266, 69.1%), prevent disease (n=282, 73.2%) and treat clientele (n=246, 63.9%), however were neutral (41.6%) or …