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Pages
- Title
- Age-related differences in unconscious plagiarism.
- Creator
- Baugh, Arely B., Strasberg, Michelle, Earles, Julie
- Date Issued
- 2013-04-05
- PURL
- http://purl.flvc.org/fcla/dt/3361068
- Subject Headings
- Plagiarism, Age
- Format
- Document (PDF)
- Title
- AGING VIEWED FROM A LIFE-SPAN PERSPECTIVE.
- Creator
- TAYLOR, REBECCA CATHERINE., Florida Atlantic University, Britt, David, Dorothy F. Schmidt College of Arts and Letters, Department of Sociology
- Abstract/Description
-
Developmental research has typically focused on one specific and rather narrowly defined age group. It is suggested that attention to a life-span perspective is increasing and that potentially such a perspective will integrate our concept of human development, especially in regard to the study of aging. Toward this end, the paper discusses paradigm differences in the definition of development and how these definitions have affected previous developmental studies. The developmental theories of...
Show moreDevelopmental research has typically focused on one specific and rather narrowly defined age group. It is suggested that attention to a life-span perspective is increasing and that potentially such a perspective will integrate our concept of human development, especially in regard to the study of aging. Toward this end, the paper discusses paradigm differences in the definition of development and how these definitions have affected previous developmental studies. The developmental theories of Piaget, Mead, and Erikson are presented as a broad theoretical framework for life-span research. Methodological implications of a life-span perspective are considered.
Show less - Date Issued
- 1976
- PURL
- http://purl.flvc.org/fcla/dt/13816
- Subject Headings
- Aging, Developmental psychology
- Format
- Document (PDF)
- Title
- PANDEMIC PERSPECTIVES: THE INFLUENCE OF DISASTER EXPERIENCE AND TECHNOLOGY USE OVER THE LIFE COURSE ON COVID-19 PERCEPTION AND RESPONSE AMONG OLDER ADULTS.
- Creator
- Kessel, Jordanne, Backstrom, Laura, Florida Atlantic University, Department of Sociology, Dorothy F. Schmidt College of Arts and Letters
- Abstract/Description
-
No group was more physically vulnerable to the COVID-19 pandemic than older adults. However, differing life histories and structural realities make for widely varying pandemic experiences. Using a life course approach, this study situates the COVID-19 pandemic and use of communication tools into context of older adults’ life experience with disasters and technology. Merging the scholarly fields of disaster sociology and aging studies, the purpose of this research is to find how life course...
Show moreNo group was more physically vulnerable to the COVID-19 pandemic than older adults. However, differing life histories and structural realities make for widely varying pandemic experiences. Using a life course approach, this study situates the COVID-19 pandemic and use of communication tools into context of older adults’ life experience with disasters and technology. Merging the scholarly fields of disaster sociology and aging studies, the purpose of this research is to find how life course experience and technology use impacted older adults’ perception of, and response to, COVID-19. Accordingly, I ask how does previous disaster experience and technology usage influence older adults’ coping regarding aging and crisis? Using 29 semi-structured interviews and two focus groups with older adults, I find that the political economic context in which a person experiences disaster has reverberations decades later. This can trigger a process of cumulative advantage, and that men and women have different access points to that process dependent on that context. Moreover, older adults make crisis-based decisions anchored in their current circumstances, not consciously in response to prior experience. In addition, early experience with technology, especially through work, helps to establish a solid foundation for resilience both in terms of resources and adaptation. I found the participants in this study to be remarkably resilient during the COVID-19 pandemic as a result of either earlier disaster experience, opportunities through work and relationships, and their ability to technologically adapt.
Show less - Date Issued
- 2024
- PURL
- http://purl.flvc.org/fau/fd/FA00014465
- Subject Headings
- Aging, Technology, Disasters, Sociology
- Format
- Document (PDF)
- Title
- DIET COACHING TO IMPROVE PROTEIN INTAKE IN MIDDLE!AGED WOMEN.
- Creator
- Jackson, Kelley, Gropper, Sareen, Florida Atlantic University, Christine E. Lynn College of Nursing, Christine E. Lynn College of Nursing
- Abstract/Description
-
The loss of muscle (mass, strength, and function) occurs in many individuals in their 40’s and begins to accelerate after 50 years of age resulting from multiple understood mechanisms. While many factors are thought to contribute to the changes that are observed in muscle with aging, one significant, yet modifiable factor is dietary protein intake. This study proposed to improve dietary protein intake in a group of middle-aged women living in South Florida over a 12-week period using...
Show moreThe loss of muscle (mass, strength, and function) occurs in many individuals in their 40’s and begins to accelerate after 50 years of age resulting from multiple understood mechanisms. While many factors are thought to contribute to the changes that are observed in muscle with aging, one significant, yet modifiable factor is dietary protein intake. This study proposed to improve dietary protein intake in a group of middle-aged women living in South Florida over a 12-week period using individualized per-meal protein prescriptions (1.2 g protein/kg body weight evenly distributed for all three meals) provided by a Registered Dietitian, followed by weekly diet coaching from a Nurse Practitioner (coach). Aims included: (1) An examination of the effect of diet coaching on protein intake, nutrition knowledge, muscle mass, strength, and function and (2) An understanding of how diet coaching sessions help in the process of making dietary changes. A parallel mixed methods research design allowed for a synthesis of inferences from each aim resulting in a meta-inference highlighting interdisciplinary collaboration.
Show less - Date Issued
- 2020
- PURL
- http://purl.flvc.org/fau/fd/FA00013545
- Subject Headings
- Middle-aged women, Dietary Proteins, Muscles--Aging
- Format
- Document (PDF)
- Title
- Age differences in binding actors and their actions in memory: Implications for eyewitness memory.
- Creator
- Curtayne, Eileen, Florida Atlantic University, Kersten, Alan
- Abstract/Description
-
Everyday individuals experience problems in accurately remembering who did what in an event. In order to have an accurate memory for an event of this type, an individual needs to remember the person who performed the action, the action itself, and the pairing of these two pieces of information. If these pieces of information are not bound together correctly, the end result is an inaccurate memory for an event. This study examined the ability of young and older adults to bind people and their...
Show moreEveryday individuals experience problems in accurately remembering who did what in an event. In order to have an accurate memory for an event of this type, an individual needs to remember the person who performed the action, the action itself, and the pairing of these two pieces of information. If these pieces of information are not bound together correctly, the end result is an inaccurate memory for an event. This study examined the ability of young and older adults to bind people and their actions together in memory. Though both age groups were more likely to falsely recognize novel combinations of familiar actors and actions than they were to falsely recognize novel actions, the older participants were even more likely to falsely recognize these novel combinations. The misbinding of actors and actions may thus contribute to the problem of mistaken eyewitness identification.
Show less - Date Issued
- 2003
- PURL
- http://purl.flvc.org/fcla/dt/13012
- Subject Headings
- Eyewitness identification, Memory in old age, Memory--Age factors
- Format
- Document (PDF)
- Title
- Is age really just a number?: neuropsychological predictors of eyewitness memory errors.
- Creator
- Tsikis, Tina, Harriet L. Wilkes Honors College
- Abstract/Description
-
Two separate groups of young and middle-aged adults watched videos of events being performed by a number of different college-aged females. Both the young goup of adults and the middle-aged group of adults were later tested on their memory for both the individual features of these events (i.e., actors and actions), and for conjunctions of features (i.e., which actor performed which action) in order to determine how likely they were to remember which actors performed which actions. Our results...
Show moreTwo separate groups of young and middle-aged adults watched videos of events being performed by a number of different college-aged females. Both the young goup of adults and the middle-aged group of adults were later tested on their memory for both the individual features of these events (i.e., actors and actions), and for conjunctions of features (i.e., which actor performed which action) in order to determine how likely they were to remember which actors performed which actions. Our results showed that frontal lobe functioning is not affected with age. However, there is a slight decrease in medial temporal functioning that continues on throughout life. There was a main effect of Question, Item Type, and Age Group explained through a three-way ANOVA. Binding errors increase with age because specific areas of the brain, such as the hippocampus and prefrontal cortex, deteriorate with age.
Show less - Date Issued
- 2012
- PURL
- http://purl.flvc.org/FAU/3359329, http://purl.flvc.org/fau/fd/FADT3359329
- Subject Headings
- Aging, Psychological aspects, Memory, Age factors, Eyewitness identification, Age factors, Recollection (Psychology), Cognition, Age factors, Transference (Psychology)
- Format
- Document (PDF)
- Title
- Integrity and reflections of the past: a phenomenographic analysis.
- Creator
- Rio, Germina Emily Risos., Christine E. Lynn College of Nursing
- Abstract/Description
-
The graying of America as a sociological and health care phenomenon continues to dictate the demand for creative and innovative interventions that can directly influence the quality of life of nursing home residents. Creative Reminiscence is a program that fosters the active reliving of the past through narration, such as in story-telling, and the use of creative art expression to uncover meaningful life events or valuable life experiences. The purpose of this study was to investigate and...
Show moreThe graying of America as a sociological and health care phenomenon continues to dictate the demand for creative and innovative interventions that can directly influence the quality of life of nursing home residents. Creative Reminiscence is a program that fosters the active reliving of the past through narration, such as in story-telling, and the use of creative art expression to uncover meaningful life events or valuable life experiences. The purpose of this study was to investigate and describe the meaningful life events elicited by the experience of Creative Reminiscence using a phenomenographic approach. Existing (archived) data-transcribed interviews, poetry and painting on planters that were obtained from 20 participants of the Creative Reminiscence program entitled Le Jardin de Sante were analyzed. Five variations of meaningful memories evoked by Creative Reminiscence were identified. These are described as follows: (a) memories that rejuvenate the elder's sense of connectio n; (b) memories that revive the elder's sense of love and intimacy; (c) memories that restore the elder's sense of being; (d) memories that reassert the elder's sense of control; and (e) memories that reinstitute the elder's sense of purpose. In a caring interaction with Creative Reminiscence, the nursed are able to transcend, moving back in time (past) to appreciate segment(s) of their lives, with triumphs and disappointments that give meaning to their inner conflict/human struggle (present), and integrate a sense of confidence and acceptance of their lives to sustain well-being and a sense of wholeness. This research highlights the similarities and differences in the description of memories by the nursing home residents evoked during Creative Reminiscence., The results of the study support Erikson's notion of the circular nature of the life cycle, wherein there is an inherent need at the last stage of life to re-integrate ascendant psychosocial themes.Taking into account the meaning that nursing home residents ascribe to their experiences provided data on strategies nurses and caregivers can use effectively to help these elders transcend despair. Further research is recommended using a more diverse sample and in more diverse geographical locations. Current standardized instruments may be revised to quantify effects on the ascendant psychosocial themes.
Show less - Date Issued
- 2008
- PURL
- http://purl.flvc.org/fcla/dt/177012
- Subject Headings
- Aging, Psychological aspects, Memory in old age, Analysis, Nursing, Philosophy, Depression in old age, Research, Reminiscing in old age
- Format
- Document (PDF)
- Title
- Aging of common snook Centropomus undecimalis larvae using sagittal daily growth rings.
- Creator
- Tucker, John W., Jr., Warlen, S. M., Harbor Branch Oceanographic Institute
- Date Issued
- 1986
- PURL
- http://purl.flvc.org/FCLA/DT/3340760
- Subject Headings
- Centropomus undecimalis, Snook, Larvae, Centropomidae, Growth, Aging
- Format
- Document (PDF)
- Title
- Memory for criminal events.
- Creator
- Norcini, Hannah, Earles, Julie
- Date Issued
- 2013-04-05
- PURL
- http://purl.flvc.org/fcla/dt/3361157
- Subject Headings
- Memory--Age factors, Face perception
- Format
- Document (PDF)
- Title
- A Study on the Potential Role of Stress Granules and Processing Bodies in Eliminating Oxidatively Damaged RNA.
- Creator
- Pourkalbassi, Delaram, Li, Zhongwei, Florida Atlantic University, Charles E. Schmidt College of Medicine, Department of Biomedical Science
- Abstract/Description
-
Oxidative stress (OS) is strongly implicated in age-related neurodegeneration and other diseases. Under OS, the production of excessive oxidants leads to increased damages to cellular components. Recently, RNA has been discovered as a major target of oxidative damage, including the creation of abasic sites. In this work, we developed a method for quantifying abasic RNA in cell. Using this method, we have examined the potential role of the RNA-processing cellular foci, stress granule (SG) and...
Show moreOxidative stress (OS) is strongly implicated in age-related neurodegeneration and other diseases. Under OS, the production of excessive oxidants leads to increased damages to cellular components. Recently, RNA has been discovered as a major target of oxidative damage, including the creation of abasic sites. In this work, we developed a method for quantifying abasic RNA in cell. Using this method, we have examined the potential role of the RNA-processing cellular foci, stress granule (SG) and processing bodies (PB) in eliminating abasic RNA in situ. We demonstrated that RNA is a major target of oxidative damage, constituting the majority of OS-induced abasic nucleic acids in HeLa cell. Importantly, the level of abasic RNA is strongly correlated with SG abundance. Furthermore, inhibition of SG/PB formation causes accumulation of abasic RNA, suggesting that SG/PB participates in removing oxidized RNA and protects cells under OS, which offers novel targets for therapeutic intervention in age-related diseases.
Show less - Date Issued
- 2016
- PURL
- http://purl.flvc.org/fau/fd/FA00004702
- Subject Headings
- Aging -- Physiological aspects., Oxidative stress., RNA -- Metabolism.
- Format
- Document (PDF)
- Title
- Age-related changes in executive function and the influence of processing speed.
- Creator
- Jurado Noboa, Maria Beatriz., Charles E. Schmidt College of Science, Department of Psychology
- Abstract/Description
-
Healthy aging has been associated with declines in executive functioning (EF) but it remains unclear how different subprocesses of EF are affected by age and by other possibly mediating variables. The principal aim of the present study was to investigate the effects of age and processing speed on three executive functions: set-shifting, planning, and attentional control. Four age groups (20-29 years, 60-69 years, 70-79 years, and 80-89 years) were compared on the Wisconsin Card Sorting Test ...
Show moreHealthy aging has been associated with declines in executive functioning (EF) but it remains unclear how different subprocesses of EF are affected by age and by other possibly mediating variables. The principal aim of the present study was to investigate the effects of age and processing speed on three executive functions: set-shifting, planning, and attentional control. Four age groups (20-29 years, 60-69 years, 70-79 years, and 80-89 years) were compared on the Wisconsin Card Sorting Test (WCST), the DKEFS Tower Test, the Conner's Continuous Performance Test, and a Letter comparison test of processing speed. Results suggested that increased age was associated with decreased performance on most of the studied executive measures, but not all EF are equally affected by age. A slowdown in processing speed mediates some, but not all, decrements in executive performance. The results are interpreted in light of recent neuroimaging data on age-related changes in brain functioning.
Show less - Date Issued
- 2009
- PURL
- http://purl.flvc.org/FAU/187213
- Subject Headings
- Aging, Psychological aspects, Cognitive psychology, Memory disorders in old age, Ability, Influence of age on, Context effects (Psychology), Cognition, Age factors
- Format
- Document (PDF)
- Title
- Types of Errors in a Memory Interference Task in Normal and Abnormal Aging.
- Creator
- Torres Solano, Valeria Lucia, Rosselli, Monica, Florida Atlantic University, Charles E. Schmidt College of Science, Department of Psychology
- Abstract/Description
-
The types of intrusion errors (Prior List, Semantically Related, and Unrelated) made on the LASSI-L verbal memory task were compared across three diagnostic groups (N = 160, 61 % female), Cognitively Normal (CN), amnestic Mild Cognitive Impairment (aMCI), and Alzheimer’s disease (AD). Errors related to Proactive, Recovery from Proactive, and Retroactive Interference were also analyzed, as well as the relationship of errors to Amyloid load, a biomarker of AD. Results suggest that the types of...
Show moreThe types of intrusion errors (Prior List, Semantically Related, and Unrelated) made on the LASSI-L verbal memory task were compared across three diagnostic groups (N = 160, 61 % female), Cognitively Normal (CN), amnestic Mild Cognitive Impairment (aMCI), and Alzheimer’s disease (AD). Errors related to Proactive, Recovery from Proactive, and Retroactive Interference were also analyzed, as well as the relationship of errors to Amyloid load, a biomarker of AD. Results suggest that the types of error made indicated the level of cognitive decline. It appears that as deficits increase, impaired semantic networks result in the simultaneous activation of items that are semantically related to LASSI-L words. In the aMCI group, providing a semantic cue resulted in an increased production of Semantically Related intrusions. Unrelated intrusions occurred rarely, although, a small number occurred even in the CN group, warranting further investigation. Amyloid load correlated with all intrusion errors.
Show less - Date Issued
- 2018
- PURL
- http://purl.flvc.org/fau/fd/FA00005982
- Subject Headings
- Memory--Age factors, Semantic memory, Amyloid
- Format
- Document (PDF)
- Title
- Hypoxia-regulated gene therapy for the treatment of subretinal neovascularization in age-related macular degeneration.
- Creator
- Smith, George Wesley Tyler., Charles E. Schmidt College of Science, Center for Complex Systems and Brain Sciences
- Abstract/Description
-
Age-related macular degeneration (AMD) is the leading cause of blindness in the western world for people over 60 years of age. The most severe pathological event of AMD is choroidal neovascularization (CNV), the process of new vessel formation emerging from the choroid. The new vessels extend into the normally avascular photoreceptor cell layer, where they leak fluid and cause photoreceptor cell death. CNV is thought to be initiated by hypoxia and chronic inflammation, which occur due to...
Show moreAge-related macular degeneration (AMD) is the leading cause of blindness in the western world for people over 60 years of age. The most severe pathological event of AMD is choroidal neovascularization (CNV), the process of new vessel formation emerging from the choroid. The new vessels extend into the normally avascular photoreceptor cell layer, where they leak fluid and cause photoreceptor cell death. CNV is thought to be initiated by hypoxia and chronic inflammation, which occur due to abnormal, age-related changes within the retinal pigmented epithelium (RPE). These events cause increased expression of the angiogenic protein vascular endothelial growth factor (VEGF) via hypoxiainducible factor-1 (HIF-1), a transcription factor that is vital in regulation of cellular responses to hypoxic and inflammatory conditions. Increased VEGF signaling stimulates proliferation and migration of vascular endothelial cells and facilitates the neovascular process. To target the early pathological events that lead to CNV, we have engineered a novel gene therapy vector that uses HIF-1 regulation to stimulate production of an angiostatic protein, endostatin from the RPE. The purpose of this study was to characterize the activity of our hypoxiaregulated, RPE-specific promoter in vitro, and investigate the effects of regulated endostatin expression, driven by our regulated promoter, on CNV in a mousemodel. We found the regulated promoter construct has robust activity in vitro only in RPE cells, and is conditionally responsive in hypoxic conditions., In the laserinduced CNV model, CNV area was 80% smaller (P<0.0001) in eyes treated with the hypoxia-regulated, RPE-specific endostatin vector than in untreated eyes. CNV area was equally reduced in eyes treated with an unregulated endostatin vector (CMV-endostatin). However, less endostatin protein was detected in eyes treated with the regulated vector. Since it is unknown whether broad and constitutive endostatin expression will have damaging effects within the retina, it may be safer to limit its expression to pathological conditions. We have demonstrated that local, hypoxia-regulated expression of endostatin can effectively inhibit CNV, and thus, offers the further possibility of a prophylactic treatment for neovascular AMD.
Show less - Date Issued
- 2010
- PURL
- http://purl.flvc.org/FAU/2979379
- Subject Headings
- Retinal degeneration, Treatment, Eye, Aging, Neovascularization inhibitors
- Format
- Document (PDF)
- Title
- Made Up.
- Creator
- Crowley, Margaret Louise, Prusa, Carol, Florida Atlantic University, Dorothy F. Schmidt College of Arts and Letters, Department of Visual Arts and Art History
- Abstract/Description
-
Made Up, a body of paintings, expresses my love/loathe relationship with the beauty/fashion industries and the fantasy/deception they instill. Aging amplifies my fear of being rejected or invisible and is assuaged by being made-up. Pages torn from fashion layouts are manually distressed to become the visually striking crumpled images that are the basis for my painting. The wrinkled nature of my source communicates my frustration with aging and never being able to meet the standards of modern...
Show moreMade Up, a body of paintings, expresses my love/loathe relationship with the beauty/fashion industries and the fantasy/deception they instill. Aging amplifies my fear of being rejected or invisible and is assuaged by being made-up. Pages torn from fashion layouts are manually distressed to become the visually striking crumpled images that are the basis for my painting. The wrinkled nature of my source communicates my frustration with aging and never being able to meet the standards of modern beauty ideals. My careful repainting of the disfiguration demonstrates my desire to intimately repair and own the image. In taking my power back through painting, the defiled magazine spread becomes a layout of my ability and power as a painter to create and control the illusion. Paint enables me to accept myself through the virtuosity of its application, scale, and in the resulting illusion, in which cathartic moments of subversive humor play out.
Show less - Date Issued
- 2019
- PURL
- http://purl.flvc.org/fau/fd/FA00013195
- Subject Headings
- Painting, Beauty culture, Aging, Feminine beauty (Aesthetics)
- Format
- Document (PDF)
- Title
- Punctilio in Henry James's "The Awkward Age".
- Creator
- Wolff, Catherine M., Florida Atlantic University, Pearce, Howard D.
- Abstract/Description
-
In The Awkward Age James dramatizes social evolution by contrasting two opposing punctilios. Mr. Longdon is heir to the classic codes of behavior, codes that emphasize protection of the woman, that stress privacy, as well as the correspondence between inner feelings and outer actions. Mrs. Brook and her set react against what this punctilio has become in modern society: mere form. They renounce the old punctilio as fraudulent and replace it with a code that emphasizes freedom, one that...
Show moreIn The Awkward Age James dramatizes social evolution by contrasting two opposing punctilios. Mr. Longdon is heir to the classic codes of behavior, codes that emphasize protection of the woman, that stress privacy, as well as the correspondence between inner feelings and outer actions. Mrs. Brook and her set react against what this punctilio has become in modern society: mere form. They renounce the old punctilio as fraudulent and replace it with a code that emphasizes freedom, one that violates the most cherished canons of Mr. Longdon's punctilio. Yet their freedom is tainted by their knowledge of the old ways. They cannot abandon the past and are caught between old and new in the process of change, unable to act or to speak their minds. Ignorant of the past, Nanda discovers the need to evolve her own punctilio.
Show less - Date Issued
- 1989
- PURL
- http://purl.flvc.org/fcla/dt/14549
- Subject Headings
- James, Henry,--1843-1916--Awkward age
- Format
- Document (PDF)
- Title
- An investigation of the attitudes of selected persons toward public schools' responsibility for school-age child care.
- Creator
- Klein, Gail Irwin., Florida Atlantic University, Weppner, Daniel B.
- Abstract/Description
-
The purpose of this investigation was to compare the attitudes of district superintendents, school board chairpersons and elementary principals toward Florida public schools' responsibility for school-age child care. A survey was sent to 534 subjects and a total of 455 surveys were returned. Each participant indicated certain demographic information and, in addition, responded to the six attitude items. The demographic data were analyzed by each opinion item on the survey. Utilizing cross...
Show moreThe purpose of this investigation was to compare the attitudes of district superintendents, school board chairpersons and elementary principals toward Florida public schools' responsibility for school-age child care. A survey was sent to 534 subjects and a total of 455 surveys were returned. Each participant indicated certain demographic information and, in addition, responded to the six attitude items. The demographic data were analyzed by each opinion item on the survey. Utilizing cross-tabulation procedures, chi-square statistics were reported. Cooper's test for item polarity was also utilized. In order to determine the strength of the association between the independent demographic variables and the dependent opinion variables, an analysis of variance was done. In addition, the Scheffe procedure was used. The findings of the study indicated that a majority of the respondents (65.1%) do not agree that school-age child care should be a responsibility of the public schools. However, if school-age child care is located in the public schools, a majority of the respondents (58.5%) agree with it being administered by public school personnel and a similar percentage disagree with the program being administered by community agencies. A large percentage (84.6%) agree that school-age child care should be primarily financed through fees paid by parents and 93.3% disagree with funding from school board budget. There is no significant difference in attitudes toward the issue among the three responding groups. In addition, there is no significant relationship between the number of K-12 students in the school district and the attitudes of corresponding respondents nor between the socio-economic level of the school's population and the attitudes. There is a significant relationship between the attitudes of the respondents and the following variables: geographic location of the school district; present status of the district involvement with school-age child care; and the principals' experience with school-age child care.
Show less - Date Issued
- 1988
- PURL
- http://purl.flvc.org/fcla/dt/11914
- Subject Headings
- Public schools, School-age child care
- Format
- Document (PDF)
- Title
- Senescent and early diagenetic changes in chlorophyll.
- Creator
- Li, Jie, Florida Atlantic University, Baker, Earl W., Charles E. Schmidt College of Science, Department of Chemistry and Biochemistry
- Abstract/Description
-
Aged unispecific cultures and environmental samples have been analyzed using HPLC-PDA in order to reveal chlorophyll-a degradation processes. Unispecific aging studies showed that alteration of chlorophyll occurred during senescence, and revealed that chlorophyll-a breakdown differs amongst various groups (i.e. species specificity). Sediment trap and sediment studies reveal that a variety of precursor chlorophyll-a derivatives are present, and that senescence and geochemistry, per se, overlap...
Show moreAged unispecific cultures and environmental samples have been analyzed using HPLC-PDA in order to reveal chlorophyll-a degradation processes. Unispecific aging studies showed that alteration of chlorophyll occurred during senescence, and revealed that chlorophyll-a breakdown differs amongst various groups (i.e. species specificity). Sediment trap and sediment studies reveal that a variety of precursor chlorophyll-a derivatives are present, and that senescence and geochemistry, per se, overlap strongly. Many of the reactions in the Treibs' scheme occur before and during deposition. Intracellular senescence and diagenetic pathways have been examined in this work. Comparison of aged unispecific cultures and environmental samples strongly suggests major in puts from the senescence pathway. The results further supports the concept "pyro" reaction (loss of the carbomethoxy group) fates chlorophyll diagenesis towards true DPEP compounds.
Show less - Date Issued
- 1997
- PURL
- http://purl.flvc.org/fcla/dt/15455
- Subject Headings
- Chlorophyll, Algae, Plants--Aging, Diagenesis
- Format
- Document (PDF)
- Title
- Own-age bias and memory for events.
- Creator
- Boutté, Danielle L., Harriet L. Wilkes Honors College
- Abstract/Description
-
Event memory studies have shown that older adults typically have poorer memories for events than do younger adults. Unfortunately, these studies tested memory for events that contained only young adults as the actors. It could be that the younger adults remembered the events better due to an own-age bias. One particular type of event memory error is called unconscious transference. In unconscious transference, a binding error results in false conjunction memories. Several studies have shown...
Show moreEvent memory studies have shown that older adults typically have poorer memories for events than do younger adults. Unfortunately, these studies tested memory for events that contained only young adults as the actors. It could be that the younger adults remembered the events better due to an own-age bias. One particular type of event memory error is called unconscious transference. In unconscious transference, a binding error results in false conjunction memories. Several studies have shown that older adults are more likely to make these errors. This study aims to look more closely at the effects of own-age bias on face recognition and conjunction errors made in memory for events. Younger adults were tested on their memory for both younger and older adults seen performing simple actions in video clips as well as in "mug shot" photograph tests.
Show less - Date Issued
- 2008
- PURL
- http://purl.flvc.org/FAU/77658
- Subject Headings
- Transference (Psychology), Recollection (Psychology), Cognition, Age factors, Face perception, Eyewitness identification, Age factors
- Format
- Document (PDF)
- Title
- Caloric restriction in Drosophila melanogaster.
- Creator
- Hoxha, Sany., Harriet L. Wilkes Honors College
- Abstract/Description
-
Caloric restriction (CR), the reduction of nutrient intake short of malnutrition, extends the lifespan of various organisms and can improve measures of human health. Whether mechanisms of lifespan extension are conserved between humans and model organisms is unknown. In mammals, implementing CR is easily achieved by providing a restricted group with a fraction of the food consumed by an "ad libitum" fed group, which has unlimited food access. Due to the difficulty in directly controlling...
Show moreCaloric restriction (CR), the reduction of nutrient intake short of malnutrition, extends the lifespan of various organisms and can improve measures of human health. Whether mechanisms of lifespan extension are conserved between humans and model organisms is unknown. In mammals, implementing CR is easily achieved by providing a restricted group with a fraction of the food consumed by an "ad libitum" fed group, which has unlimited food access. Due to the difficulty in directly controlling Drosophila food intake, caloric restriction, performed similarly to the mammalian paradigm, has never been tested in flies. Here, we demonstrate a system that allows measurement of food intake throughout life. This system will be used to measure fly lifespan under caloric restriction analogous to current mammalian studies. Our work will help tease apart the differences between the various caloric and dietary restriction paradigms in Drosophila, strengthening our understanding of how fly models relate to mammalian systems.
Show less - Date Issued
- 2012
- PURL
- http://purl.flvc.org/FAU/3359316
- Subject Headings
- Aging, Physiological aspects, Nutrition disorders in old age, Oxidative stress, Pathophysiology
- Format
- Document (PDF)
- Title
- Preserved and deficient calculation processes in Alzheimer's disease and mild cognitive impairment.
- Creator
- Jurado Noboa, Maria Beatriz., Charles E. Schmidt College of Science, Department of Psychology
- Abstract/Description
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Two skills necessary for the execution of proficient calculation, retrieving arithmetic facts from memory and accessing number magnitude information, were studied in a group of patients diagnosed with Alzheimer's disease (AD), mild cognitive impairment (MCI), and healthy controls to try to elucidate the locus of impairment in AD-related calculation deficits. This was achieved through the use of an arithmetic production task and a number-matching task as measures of explicit and implicit...
Show moreTwo skills necessary for the execution of proficient calculation, retrieving arithmetic facts from memory and accessing number magnitude information, were studied in a group of patients diagnosed with Alzheimer's disease (AD), mild cognitive impairment (MCI), and healthy controls to try to elucidate the locus of impairment in AD-related calculation deficits. This was achieved through the use of an arithmetic production task and a number-matching task as measures of explicit and implicit retrieval of arithmetic facts, and a numerical Stroop task that assesses automatic access to number magnitude representation. AD patients, but not MCI patients, showed high response latencies and a high number of errors when performing multiplications in the production task, and reduced automatic retrieval of arithmetic task in the number-matching task. All participants showed the classic problem-size effect often reported in the mathematical cognition literature. Performance on the numerical Stroop task suggests that access to number magnitude information is relatively resistant to cognitive impairment. ... Results for the AD group are consistent with a pattern of preserved and impaired cognitive processes that might mediate the reported calculation deficits in AD.
Show less - Date Issued
- 2013
- PURL
- http://purl.flvc.org/fcla/dt/3362384
- Subject Headings
- Aging, Psychological aspects, Cognitive psychology, Memory disorders in old age, Alzheimer's disease, Diagnosis, Context effects (Psychology)
- Format
- Document (PDF)
