subject:(sensory loss)

Massey University

1. Wohlers, Mark William. Multi-step look-ahead adaptive designs for the estimation of sensory thresholds.

Degree: Master of Applied Statistics, 2013, Massey University

► The estimation of sensory thresholds is an important part of the psychophysics field. The point at which a physical stimulus becomes detectable can vary from… (more)

▼ The estimation of sensory thresholds is an important part of the psychophysics field. The point at which a physical stimulus becomes detectable can vary from trial to trial within as well as between subjects. Often the probability of detection is modelled over a range of stimulus intensities using an assumed psychometric curve which has the threshold as a parameter. To estimate the threshold with a reasonable accuracy often requires careful placement of the stimulus levels when the total number of trials are limited. There have been a number of design schemes proposed over the years to find the optimum placement strategy to minimise a given loss function. Some of the most successful have been Bayesian adaptive designs which select the next signal intensity based on prior knowledge and the responses observed up until that point. A critical step in the adaptive designs is the choice of threshold estimator and error term, also known as the loss function, to be minimised by the design scheme. A sub-class of these look-ahead a short number of trials to calculate the expected loss function given the current posterior distribution. However sometimes it is not possible to adjust the signal after every test. Olfactory sensory threshold tests, for example, can require a large setup time. In this situation a number of sensory tests may be grouped into sessions, with any design alterations occurring between these. However this would require a look-ahead design with a number of steps equal to the number of samples in a session. Most of the look-ahead designs have been restricted to one or two steps due to the little performance increase gained by increasing them and the computational limitations at the time they were suggested. The first point is not relevant to situations where the step size must be larger, and the second point may be less true today due to advances in computer power. This investigation demonstrates that it is possible to implement multi-step look-ahead adaptive designs in a computationally efficient manner for sessions up to sizes of twelve samples. Based on Monte-Carlo simulations, these multi-step look-ahead designs also provide encouraging results in terms of performance in minimising a number of loss functions.

Subjects/Keywords: Sensory thresholds; Psychophysics; Sensory trials; Loss function; Adaptive designs; Sensory evaluation; Sensory threshold tests

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Wohlers, M. W. (2013). Multi-step look-ahead adaptive designs for the estimation of sensory thresholds. (Masters Thesis). Massey University. Retrieved from http://hdl.handle.net/10179/4908

Chicago Manual of Style (16^th Edition):

Wohlers, Mark William. “Multi-step look-ahead adaptive designs for the estimation of sensory thresholds.” 2013. Masters Thesis, Massey University. Accessed January 23, 2021. http://hdl.handle.net/10179/4908.

MLA Handbook (7^th Edition):

Wohlers, Mark William. “Multi-step look-ahead adaptive designs for the estimation of sensory thresholds.” 2013. Web. 23 Jan 2021.

Vancouver:

Wohlers MW. Multi-step look-ahead adaptive designs for the estimation of sensory thresholds. [Internet] [Masters thesis]. Massey University; 2013. [cited 2021 Jan 23]. Available from: http://hdl.handle.net/10179/4908.

Council of Science Editors:

Wohlers MW. Multi-step look-ahead adaptive designs for the estimation of sensory thresholds. [Masters Thesis]. Massey University; 2013. Available from: http://hdl.handle.net/10179/4908

2. Womack, Molly Corinne. Evolution of 'earlessness' in the true Toad family (Bufonidae), The.

Degree: PhD, Biology, 2016, Colorado State University

URL: http://hdl.handle.net/10217/178880

► Anurans (frogs and toads) have a tympanic middle ear to transmit airborne sound from the environment to their inner ear sensory cells. Yet, many bufonid… (more)

Subjects/Keywords: comparative morphology; earless; sensory loss; developmental constraint; anurans; evolutionary development

10 more images…

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APA (6^th Edition):

Womack, M. C. (2016). Evolution of 'earlessness' in the true Toad family (Bufonidae), The. (Doctoral Dissertation). Colorado State University. Retrieved from http://hdl.handle.net/10217/178880

Chicago Manual of Style (16^th Edition):

Womack, Molly Corinne. “Evolution of 'earlessness' in the true Toad family (Bufonidae), The.” 2016. Doctoral Dissertation, Colorado State University. Accessed January 23, 2021. http://hdl.handle.net/10217/178880.

MLA Handbook (7^th Edition):

Womack, Molly Corinne. “Evolution of 'earlessness' in the true Toad family (Bufonidae), The.” 2016. Web. 23 Jan 2021.

Vancouver:

Womack MC. Evolution of 'earlessness' in the true Toad family (Bufonidae), The. [Internet] [Doctoral dissertation]. Colorado State University; 2016. [cited 2021 Jan 23]. Available from: http://hdl.handle.net/10217/178880.

Council of Science Editors:

Womack MC. Evolution of 'earlessness' in the true Toad family (Bufonidae), The. [Doctoral Dissertation]. Colorado State University; 2016. Available from: http://hdl.handle.net/10217/178880

Harvard University

3. Musser, Anna. Making Things Easier by Making Them Harder: Can Listening at a Low Volume Improve Hearing?.

Degree: ALM, 2019, Harvard University

URL: http://nrs.harvard.edu/urn-3:HUL.InstRepos:42006725

►

Can listening to information at a low volume improve hearing? To test this hypothesis this experiment had undergraduate students listen to a podcast at a… (more)

▼

Can listening to information at a low volume improve hearing? To test this hypothesis this experiment had undergraduate students listen to a podcast at a low volume. In addition, this study also explored expectation or priming someone to anticipate a particular outcome. The central questions of this study asked how both listening to a podcast at a low volume and expectation influenced hearing outcomes, reaction times, the comprehension of auditory information and perceived mindfulness. A secondary line of inquiry examined whether one’s perceived mindfulness is correlated with reaction times. To this end, 111 Harvard undergraduate students with no history of hearing impairment were recruited into a 2 x 2 factorial designed study, where podcast volume and expectation were the factors at play. All participants completed a Langer Mindfulness Scale and a hearing test before being placed into one of four conditions: condition 1, participants listened to a podcast at a regular volume and were told they could expect their hearing to improve, condition 2, participants listened to a podcast at a regular volume, condition 3, participants listened to a podcast at a low volume and were told that they could expect their hearing to improve, and condition 4, participants listened to a podcast at a low volume. Participants then completed a second Langer Mindfulness Scale and hearing test, as well as a visual reaction time test, an auditory reaction time test and a quiz designed to test participants’ comprehension of the podcast material. This study found that found that that participants that listened to podcasts at a low volume would experience improvements in their posttest hearing test scores. Additionally, being within an expectation group was significantly associated with better scores on hearing tests. It should be noted that this study presupposed that listening to podcasts at a lower volume level will allow participants to mindfully notice change. Due to the fact that other mindfulness interventions have produced positive changes in auditory processing (Langer, 2009) this study’s results may give further credence to the notion that engaging in mindfulness can positively impact sensory processing. In light of these results it may be prudent to explore whether listening to information at a low volume can improve the hearing of those who live with mild to moderate hearing impairment. Conversely, based on the analysis of this thesis the podcast volume and expectation were not significantly correlated with reaction times or perceived mindfulness. Similarly, perceived mindfulness was not significantly correlated with reaction times. Lastly, the comprehension assessment used to evaluate the comprehension of podcast material proved to be too easy. As a result, a ceiling effect was observed and thus whether listening to podcasts at a low volume impacts comprehension remains unknown.

Psychology

Advisors/Committee Members: Langer, Ellen (committee member), Spetter, Dante (committee member).

Subjects/Keywords: Mindfulness; Disfluency; Hearing; Hearing Loss; Hearing Impairment; Sensory Processing

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Musser, A. (2019). Making Things Easier by Making Them Harder: Can Listening at a Low Volume Improve Hearing?. (Masters Thesis). Harvard University. Retrieved from http://nrs.harvard.edu/urn-3:HUL.InstRepos:42006725

Chicago Manual of Style (16^th Edition):

Musser, Anna. “Making Things Easier by Making Them Harder: Can Listening at a Low Volume Improve Hearing?.” 2019. Masters Thesis, Harvard University. Accessed January 23, 2021. http://nrs.harvard.edu/urn-3:HUL.InstRepos:42006725.

MLA Handbook (7^th Edition):

Musser, Anna. “Making Things Easier by Making Them Harder: Can Listening at a Low Volume Improve Hearing?.” 2019. Web. 23 Jan 2021.

Vancouver:

Musser A. Making Things Easier by Making Them Harder: Can Listening at a Low Volume Improve Hearing?. [Internet] [Masters thesis]. Harvard University; 2019. [cited 2021 Jan 23]. Available from: http://nrs.harvard.edu/urn-3:HUL.InstRepos:42006725.

Council of Science Editors:

Musser A. Making Things Easier by Making Them Harder: Can Listening at a Low Volume Improve Hearing?. [Masters Thesis]. Harvard University; 2019. Available from: http://nrs.harvard.edu/urn-3:HUL.InstRepos:42006725

University of Pretoria

4. [No author]. The influence of non-linear frequency compression on music perception for adults with a moderate to severe hearing loss .

Degree: 2012, University of Pretoria

URL: http://upetd.up.ac.za/thesis/available/etd-10132012-123616/

► Objective: To date, the main focus in frequency lowering hearing aid studies has been in relation to speech perception abilities. With improvements in hearing aid… (more)

▼ Objective: To date, the main focus in frequency lowering hearing aid studies has been in relation to speech perception abilities. With improvements in hearing aid technology, there is a growing interest in musical perception as a dimension that could improve hearing aid users’ quality of life. The purpose of this study was two-fold: Firstly, to develop a test of music perception for adult hearing aid users and secondly, to evaluate the influence of non-linear frequency compression (NFC) on music perception with the use of the Music Perception Test (MPT) compiled by the researcher. Research design and research sample: Phase 1 entailed the compilation of the MPT and can be described as design-based. A quasi-experimental research design was selected to establish the structure of the method employed in Phase 2, which involved the fitting of participants (n=40) with NFC hearing aids. Objective data was obtained with the hearing aids with NFC active and inactive. Phase 3 was characterized by a survey design which elicited subjective impressions of the participants’ musical experiences with NFC active and inactive. Results: Results proved that normal hearing adults as well as adults using hearing aids were able to complete all the sub-tests of the MPT. Furthermore, the use of NFC resulted in a statistically significant improvement in hearing aid users’ perception of timbre and melody, but not of pitch. Overall, no statistically significant improvement in their perception of rhythm was observed, although their performance on some rhythm sub-tests improved significantly. The use of NFC also brought about a statistically significant improvement in hearing aid users’ perception of the music qualities of overall fidelity, tinniness and reverberance. Although participants experienced the loudness, fullness, crispness, naturalness and pleasantness of music more positively with NFC, these benefits were not statistically significant. Conclusion: The MPT can be used successfully for assessing music perception in hearing aid users within the South African context and may therefore result in more accountable hearing aid fittings. The use of NFC may increase hearing aid users’ appreciation of music whilst not influencing music perception negatively. Given that a large percentage of hearing aid users express a loss in enjoyment of music, audiologists should not ignore the possible benefits of NFC, especially if one takes into account that previous research indicated speech perception benefits with this technology. Advisors/Committee Members: Dr L Pottas (advisor), Prof B H M Vinck (advisor).

Subjects/Keywords: Hearing aids; Hearing loss; Music perception; Non-linear frequency compression; Frequency lowering; Sensory neural hearing loss; Cochlear dead regions; Music enjoyment; Evidence-based practice; South african context; UCTD

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

author], [. (2012). The influence of non-linear frequency compression on music perception for adults with a moderate to severe hearing loss . (Doctoral Dissertation). University of Pretoria. Retrieved from http://upetd.up.ac.za/thesis/available/etd-10132012-123616/

Chicago Manual of Style (16^th Edition):

author], [No. “The influence of non-linear frequency compression on music perception for adults with a moderate to severe hearing loss .” 2012. Doctoral Dissertation, University of Pretoria. Accessed January 23, 2021. http://upetd.up.ac.za/thesis/available/etd-10132012-123616/.

MLA Handbook (7^th Edition):

author], [No. “The influence of non-linear frequency compression on music perception for adults with a moderate to severe hearing loss .” 2012. Web. 23 Jan 2021.

Vancouver:

author] [. The influence of non-linear frequency compression on music perception for adults with a moderate to severe hearing loss . [Internet] [Doctoral dissertation]. University of Pretoria; 2012. [cited 2021 Jan 23]. Available from: http://upetd.up.ac.za/thesis/available/etd-10132012-123616/.

Council of Science Editors:

author] [. The influence of non-linear frequency compression on music perception for adults with a moderate to severe hearing loss . [Doctoral Dissertation]. University of Pretoria; 2012. Available from: http://upetd.up.ac.za/thesis/available/etd-10132012-123616/

University of Pretoria

5. Uys, Marinda. The influence of non-linear frequency compression on music perception for adults with a moderate to severe hearing loss.

Degree: Speech-Language Pathology and Audiology, 2012, University of Pretoria

URL: http://hdl.handle.net/2263/28699

► Objective: To date, the main focus in frequency lowering hearing aid studies has been in relation to speech perception abilities. With improvements in hearing aid… (more)

▼ Objective: To date, the main focus in frequency lowering hearing aid studies has been in relation to speech perception abilities. With improvements in hearing aid technology, there is a growing interest in musical perception as a dimension that could improve hearing aid users’ quality of life. The purpose of this study was two-fold: Firstly, to develop a test of music perception for adult hearing aid users and secondly, to evaluate the influence of non-linear frequency compression (NFC) on music perception with the use of the Music Perception Test (MPT) compiled by the researcher. Research design and research sample: Phase 1 entailed the compilation of the MPT and can be described as design-based. A quasi-experimental research design was selected to establish the structure of the method employed in Phase 2, which involved the fitting of participants (n=40) with NFC hearing aids. Objective data was obtained with the hearing aids with NFC active and inactive. Phase 3 was characterized by a survey design which elicited subjective impressions of the participants’ musical experiences with NFC active and inactive. Results: Results proved that normal hearing adults as well as adults using hearing aids were able to complete all the sub-tests of the MPT. Furthermore, the use of NFC resulted in a statistically significant improvement in hearing aid users’ perception of timbre and melody, but not of pitch. Overall, no statistically significant improvement in their perception of rhythm was observed, although their performance on some rhythm sub-tests improved significantly. The use of NFC also brought about a statistically significant improvement in hearing aid users’ perception of the music qualities of overall fidelity, tinniness and reverberance. Although participants experienced the loudness, fullness, crispness, naturalness and pleasantness of music more positively with NFC, these benefits were not statistically significant. Conclusion: The MPT can be used successfully for assessing music perception in hearing aid users within the South African context and may therefore result in more accountable hearing aid fittings. The use of NFC may increase hearing aid users’ appreciation of music whilst not influencing music perception negatively. Given that a large percentage of hearing aid users express a loss in enjoyment of music, audiologists should not ignore the possible benefits of NFC, especially if one takes into account that previous research indicated speech perception benefits with this technology. Advisors/Committee Members: Dr L Pottas (advisor), Prof B H M Vinck (advisor).

Subjects/Keywords: Hearing aids; Hearing loss; Music perception; Non-linear frequency compression; Frequency lowering; Sensory neural hearing loss; Cochlear dead regions; Music enjoyment; Evidence-based practice; South african context; UCTD

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Uys, M. (2012). The influence of non-linear frequency compression on music perception for adults with a moderate to severe hearing loss. (Doctoral Dissertation). University of Pretoria. Retrieved from http://hdl.handle.net/2263/28699

Chicago Manual of Style (16^th Edition):

Uys, Marinda. “The influence of non-linear frequency compression on music perception for adults with a moderate to severe hearing loss.” 2012. Doctoral Dissertation, University of Pretoria. Accessed January 23, 2021. http://hdl.handle.net/2263/28699.

MLA Handbook (7^th Edition):

Uys, Marinda. “The influence of non-linear frequency compression on music perception for adults with a moderate to severe hearing loss.” 2012. Web. 23 Jan 2021.

Vancouver:

Uys M. The influence of non-linear frequency compression on music perception for adults with a moderate to severe hearing loss. [Internet] [Doctoral dissertation]. University of Pretoria; 2012. [cited 2021 Jan 23]. Available from: http://hdl.handle.net/2263/28699.

Council of Science Editors:

Uys M. The influence of non-linear frequency compression on music perception for adults with a moderate to severe hearing loss. [Doctoral Dissertation]. University of Pretoria; 2012. Available from: http://hdl.handle.net/2263/28699

Queens University

6. Jaiswal, Atul. Participation of Persons with Deafblindness in India .

Degree: Rehabilitation Science, Queens University

URL: http://hdl.handle.net/1974/26103

► Worldwide research on deafblindness is sparse, particularly in low and middle-income countries such as India. Persons with deafblindness often experience participation barriers. Yet little is… (more)

▼ Worldwide research on deafblindness is sparse, particularly in low and middle-income countries such as India. Persons with deafblindness often experience participation barriers. Yet little is known about their lived experience of participation, influencing factors, and ways to enhance it. To address this evidence gap, this phased study aimed to synthesize evidence on the participation experiences of persons with deafblindness (Phase 1); to understand what participation means to persons with deafblindness in India (Phase 2); and to describe the contextual factors that influence the participation of persons with deafblindness from the perspectives of those with deafblindness and their service providers (Phase 3). To fulfill the aims, I conducted scoping review in Phase 1, and qualitative interviews with 16 persons with deafblindness and two focus group discussions with 16 professionals in Phases 2 and 3. Interviews and group discussions were guided by the International Classification of Functioning, Disability and Health. The understanding of participation experiences and influencing contextual factors suggest ways to enhance the participation of persons with deafblindness. Findings indicate participation as a dynamic, individualized construct that is not just an end outcome. Rather, it is a means to achieve other goals important to the participants such as gaining respect, autonomy, independence, support and relationships, to fulfil aspirations and responsibilities, and to feel included and recognized in society. Life domains that persons with deafblindness value for participation were access to information, communication, mobility, relationships, education and productivity, and recreation and leisure. Resources, such as deafblind-specific rehabilitation services, alternative communication modes, and technology/aids (e.g., hearing aids, cochlear implants, refreshable braille displays, and magnifiers) were helpful in improving access to information, communication and social interactions, and thus important for enhancing participation. Results suggest that rehabilitation services and policies must be designed to focus on life domains that persons with deafblindness value. It is also important to address environmental barriers such as lack of awareness about deafblindness among the public, negative societal attitudes, and limited resources to support the participation of those with deafblindness.

Subjects/Keywords: participation ; deafblindness ; dual sensory loss ; ICF ; India ; multi-sensory impairment ; dual sensory impairment ; factors ; environment ; rehabilitation

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APA (6^th Edition):

Jaiswal, A. (n.d.). Participation of Persons with Deafblindness in India . (Thesis). Queens University. Retrieved from http://hdl.handle.net/1974/26103

Note: this citation may be lacking information needed for this citation format:
No year of publication.
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Jaiswal, Atul. “Participation of Persons with Deafblindness in India .” Thesis, Queens University. Accessed January 23, 2021. http://hdl.handle.net/1974/26103.

Note: this citation may be lacking information needed for this citation format:
No year of publication.
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Jaiswal, Atul. “Participation of Persons with Deafblindness in India .” Web. 23 Jan 2021.

Note: this citation may be lacking information needed for this citation format:
No year of publication.

Vancouver:

Jaiswal A. Participation of Persons with Deafblindness in India . [Internet] [Thesis]. Queens University; [cited 2021 Jan 23]. Available from: http://hdl.handle.net/1974/26103.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
No year of publication.

Council of Science Editors:

Jaiswal A. Participation of Persons with Deafblindness in India . [Thesis]. Queens University; Available from: http://hdl.handle.net/1974/26103

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
No year of publication.

Universidade Estadual de Campinas

7. Carvalho, Guilherme Machado de, 1985-. Estudo genético-clínico de pacientes com o espectro da neuropatia auditiva = Genetic-clinical evaluation of patients with auditory neuropathy spectrum: Genetic-clinical evaluation of patients with auditory neuropathy spectrum.

Degree: 2017, Universidade Estadual de Campinas

URL: http://repositorio.unicamp.br/jspui/handle/REPOSIP/330281

► Abstract: Deafness is the most prevalent sensory disease in humans, with genetic and environmental causes. Non-syndromic hearing loss (PANS) reaches for over 70% of hereditary… (more)

▼ Abstract: Deafness is the most prevalent sensory disease in humans, with genetic and environmental causes. Non-syndromic hearing loss (PANS) reaches for over 70% of hereditary cases, being more frequent as recessive autosomal (AR) forms. The heterogeneity of PANS AR is extremely high, and 71 loci and 40 genes have been identified. Auditory Neuropathy (NA) is a type of sensorineural hearing loss that consists of a change in the conduction of the auditory stimulus due to involvement of the inner hair cells, auditory nerve or synapses between them. It is characterized by absence or alteration of the waves of brainstem auditory evoked potentials, with positive otoacoustic emissions and/or identification of cochlear microphone. At the moment, 4 loci responsible for non-syndromic NA were mapped: DFNB9 (OTOF gene) and DFNB59 (PJVK gene), associated with the AR form; AUNA1 (DIAPH3 gene), autosomal dominant; And AUNX1, linked to the X chromosome. Furthermore, mutations in the GJB2 gene were related to NA. Non-OTOF mutations play a significant role in NA. More than 80 different mutations were identified in individuals with PANS AR in populations of varied origins, especially a p.Q829X mutation identified in 3% of Spanish. The genetic findings are the challenges that contribute to the understanding of the different phenomena of hearing loss in NA. In addition, the use of molecular tools for a faster and more effective diagnosis is of great interest. Thus, these factors are extremely important for differential diagnosis, development of specific treatments and accurate genetic counseling. The goal of this study is to search for OTOF mutations in patients diagnosed with NA, to investigate other genetic / molecular changes that are in a relationship with NA, to describe the clinical data of patients with clinical diagnosis of NA followed in Otorhinolaryngology-Unicamp and to detail the subgroup of patients undergoing treatment with cochlear implant (IC). The mutation of the GJB2 gene is present in 7.5% of the patients studied (p> .05) and no mutation of the OTOF gene was identified. Almost 80% of the patients had onset of symptoms in the first year of life, and 53% had severe / profound deafness. The IC patients had excellent results, with good speech development, language acquisition, as well as patients and their families were well satisfied. The treatment should focus on development of means where the patient can get interpret their hearing and have good communication. Auditory training and sound stimulation are essential. The IC presents scientific evidences that support this treatment and should be an option when there is poor development in the acquisition/development of speech, even with adequate therapies. NA is still a major medical and therapeutic challenge, with its genetic and environmental etiology still uncertain. We believe that NA is a set of diseases where an electrophysiological auditory and genetic evaluation are great tools for follow-up those patients. NA is a complex situation and must be approached… Advisors/Committee Members: UNIVERSIDADE ESTADUAL DE CAMPINAS (CRUESP), Sartorato, Edi Lúcia, 1962- (advisor), Universidade Estadual de Campinas. Faculdade de Ciências Médicas (institution), Programa de Pós-Graduação em Ciências Médicas (nameofprogram), Crespo, Agrício Nubiato (committee member), Corrêa, Carlos Roberto Silveira (committee member), Hyppolito, Miguel Angelo (committee member), Dolci, José Eduardo Lutaif (committee member).

Subjects/Keywords: Transtornos da percepção auditiva; Perda auditiva; Implantes cocleares; Neuropatia hereditária motora e sensorial; Surdez; Auditory perceptual disorders; Hearing loss; Cochlear implants; Hereditary sensory and motor neuropathy; Deafness

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Carvalho, Guilherme Machado de, 1. (2017). Estudo genético-clínico de pacientes com o espectro da neuropatia auditiva = Genetic-clinical evaluation of patients with auditory neuropathy spectrum: Genetic-clinical evaluation of patients with auditory neuropathy spectrum. (Thesis). Universidade Estadual de Campinas. Retrieved from http://repositorio.unicamp.br/jspui/handle/REPOSIP/330281

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Carvalho, Guilherme Machado de, 1985-. “Estudo genético-clínico de pacientes com o espectro da neuropatia auditiva = Genetic-clinical evaluation of patients with auditory neuropathy spectrum: Genetic-clinical evaluation of patients with auditory neuropathy spectrum.” 2017. Thesis, Universidade Estadual de Campinas. Accessed January 23, 2021. http://repositorio.unicamp.br/jspui/handle/REPOSIP/330281.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Carvalho, Guilherme Machado de, 1985-. “Estudo genético-clínico de pacientes com o espectro da neuropatia auditiva = Genetic-clinical evaluation of patients with auditory neuropathy spectrum: Genetic-clinical evaluation of patients with auditory neuropathy spectrum.” 2017. Web. 23 Jan 2021.

Vancouver:

Carvalho, Guilherme Machado de 1. Estudo genético-clínico de pacientes com o espectro da neuropatia auditiva = Genetic-clinical evaluation of patients with auditory neuropathy spectrum: Genetic-clinical evaluation of patients with auditory neuropathy spectrum. [Internet] [Thesis]. Universidade Estadual de Campinas; 2017. [cited 2021 Jan 23]. Available from: http://repositorio.unicamp.br/jspui/handle/REPOSIP/330281.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Carvalho, Guilherme Machado de 1. Estudo genético-clínico de pacientes com o espectro da neuropatia auditiva = Genetic-clinical evaluation of patients with auditory neuropathy spectrum: Genetic-clinical evaluation of patients with auditory neuropathy spectrum. [Thesis]. Universidade Estadual de Campinas; 2017. Available from: http://repositorio.unicamp.br/jspui/handle/REPOSIP/330281

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Texas A&M University

8. Harbison, Amanda 1989-. Improving the Flavor of Ground Beef by Selecting Trimmings from Specific Locations.

Degree: MS, Animal Science, 2012, Texas A&M University

URL: http://hdl.handle.net/1969.1/148067

► We hypothesized that carcass subcutaneous fat location would affect sensory and quality traits. Five carcass fat sources were tested: brisket, chuck, plate, flank, and round.… (more)

▼ We hypothesized that carcass subcutaneous fat location would affect sensory and quality traits. Five carcass fat sources were tested: brisket, chuck, plate, flank, and round. Ground beef was formulated using each fat source and extra-lean beef trim (>95% lean) to contain 80% lean trim and 20% fat trim. Patties (100 g) were evaluated for color, lipid oxidation, fatty acid composition and consumer evaluation. Flavor was analyzed using a Gas chromatography with mass spectrometry (GC/MS) on the headspace above a cooked (74 degrees C) patty in a heated (60 degrees C) 473 mL glass jar with a solid phase micro-extraction (SPME) fiber. Color, thiobarbituric acid reactive substance assay (TBARS), consumer sensory, and cook/freezer loss data showed no differences (P > 0.05) among carcass locations. Percentage stearic acid was lower (P = 0.044) in the brisket than in the chuck and flank. The brisket was higher in percentage cis-vaccenic acid (P = 0.016) and in the saturated fatty acid to monounsaturated fatty acid ratio (P = 0.018), and lower (P = 0.004) in the percentage of total saturated fatty acids than all other sources of subcutaneous fat. Butanedione was highest (P = 0.013) in the flank and plate fat. Brisket tended to be higher (P = 0.054) than flank, plate, and round in 1-octen-3-ol. Brisket was higher (P = 0.008) than chuck, flank, and round, but not different (P > 0.05) than plate in octanedione. Brisket was higher (P = 0.003) than all other sources for beefy aroma. Flank was higher (P = 0.047) than chuck and round for chemical aroma. Brisket was higher (P = 0.004) than all other sources except flank for floral aromas. Plate was higher (P = 0.029) than all other sources for heated oil aromas. For secondary aroma descriptor, round was higher (P < 0.001) than flank, plate, and chuck for dairy. While differences in some key fatty acids and aromatics existed among carcass locations, when the fat was diluted with a common lean source, fat source did not have a negative effect on sensory or quality traits. Therefore, formulating ground beef using subcutaneous fat from specific locations on a carcass may improve the beef aromatics without negatively affecting sensory or quality traits. Advisors/Committee Members: Kerth, Christopher R (advisor), Smith, Stephen B (committee member), Miller, Rhonda K (committee member).

Subjects/Keywords: olfactometry port; mass spectrometry; gas chromatography; freezer and cook loss; consumer sensory; color; shelf life; oxidation; flavor; subcutaneous fat; fatty acids; Ground beef

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APA (6^th Edition):

Harbison, A. 1. (2012). Improving the Flavor of Ground Beef by Selecting Trimmings from Specific Locations. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/148067

Chicago Manual of Style (16^th Edition):

Harbison, Amanda 1989-. “Improving the Flavor of Ground Beef by Selecting Trimmings from Specific Locations.” 2012. Masters Thesis, Texas A&M University. Accessed January 23, 2021. http://hdl.handle.net/1969.1/148067.

MLA Handbook (7^th Edition):

Harbison, Amanda 1989-. “Improving the Flavor of Ground Beef by Selecting Trimmings from Specific Locations.” 2012. Web. 23 Jan 2021.

Vancouver:

Harbison A1. Improving the Flavor of Ground Beef by Selecting Trimmings from Specific Locations. [Internet] [Masters thesis]. Texas A&M University; 2012. [cited 2021 Jan 23]. Available from: http://hdl.handle.net/1969.1/148067.

Council of Science Editors:

Harbison A1. Improving the Flavor of Ground Beef by Selecting Trimmings from Specific Locations. [Masters Thesis]. Texas A&M University; 2012. Available from: http://hdl.handle.net/1969.1/148067

Queensland University of Technology

9. Jackson, Kathryn Anne. Measuring voluntary dietary change in response to exercise : a focus on dietary fat.

Degree: 2012, Queensland University of Technology

URL: https://eprints.qut.edu.au/52660/

► Traditional treatments for weight management have focussed on prescribed dietary restriction or regular exercise, or a combination of both. However recidivism for such prescribed treatments… (more)

▼ Traditional treatments for weight management have focussed on prescribed dietary restriction or regular exercise, or a combination of both. However recidivism for such prescribed treatments remains high, particularly among the overweight and obese. The aim of this thesis was to investigate voluntary dietary changes in the presence of prescribed mixed-mode exercise, conducted over 16 weeks. With the implementation of a single lifestyle change (exercise) it was postulated that the onerous burden of concomitant dietary and exercise compliance would be reduced, leading to voluntary lifestyle changes in such areas as diet. In addition, the failure of exercise as a single weight loss treatment has been reported to be due to compensatory energy intakes, although much of the evidence is from acute exercise studies, necessitating investigation of compensatory intakes during a long-term exercise intervention. Following 16 weeks of moderate intensity exercise, 30 overweight and obese (BMI≥25.00 kg.m-2) men and women showed small but statistically significant decreases in mean dietary fat intakes, without compensatory increases in other macronutrient or total energy intakes. Indeed total energy intakes were significantly lower for men and women following the exercise intervention, due to the decreases in dietary fat intakes. There was a risk that acceptance of the statistical validity of the small changes to dietary fat intakes may have constituted a Type 1 error, with false rejection of the Null hypothesis. Oro-sensory perceptions to changes in fat loads were therefore investigated to determine whether the measured dietary fat changes were detectable by the human palate. The ability to detect small changes in dietary fat provides sensory feedback for self-initiated dietary changes, but lean and overweight participants were unable to distinguish changes to fat loads of similar magnitudes to that measured in the exercise intervention study. Accuracy of the dietary measurement instrument was improved with the effects of random error (day-to-day variability) minimised with the use of a statistically validated 8-day, multiple-pass, 24 hour dietary recall instrument. However systematic error (underreporting) may have masked the magnitude of dietary change, particularly the reduction in dietary fat intakes. A purported biomarker (plasma Apolipoprotein A-IV) (apoA-IV) was subsequently investigated, to monitor systematic error in self-reported dietary intakes. Changes in plasma apoA-IV concentrations were directly correlated with increased and decreased changes to dietary fat intakes, suggesting that this objective marker may be a useful tool to improve the accuracy of dietary measurement in overweight and obese populations, who are susceptible to dietary underreporting.

Subjects/Keywords: dietary intake; energy intake; dietary fat; voluntary dietary change; macronutrient choice; exercise; lifestyle change; weight loss; body composition; random error; systematic error; oro-sensory perception; fat; biomarker; Apolipoprotein A-IV

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Jackson, K. A. (2012). Measuring voluntary dietary change in response to exercise : a focus on dietary fat. (Thesis). Queensland University of Technology. Retrieved from https://eprints.qut.edu.au/52660/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Jackson, Kathryn Anne. “Measuring voluntary dietary change in response to exercise : a focus on dietary fat.” 2012. Thesis, Queensland University of Technology. Accessed January 23, 2021. https://eprints.qut.edu.au/52660/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Jackson, Kathryn Anne. “Measuring voluntary dietary change in response to exercise : a focus on dietary fat.” 2012. Web. 23 Jan 2021.

Vancouver:

Jackson KA. Measuring voluntary dietary change in response to exercise : a focus on dietary fat. [Internet] [Thesis]. Queensland University of Technology; 2012. [cited 2021 Jan 23]. Available from: https://eprints.qut.edu.au/52660/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Jackson KA. Measuring voluntary dietary change in response to exercise : a focus on dietary fat. [Thesis]. Queensland University of Technology; 2012. Available from: https://eprints.qut.edu.au/52660/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

10. Graczyk, Emily Lauren. Natural Perceptual Characteristics and Psychosocial Impacts of Touch Evoked by Peripheral Nerve Stimulation.

Degree: PhD, Biomedical Engineering, 2018, Case Western Reserve University School of Graduate Studies

URL: http://rave.ohiolink.edu/etdc/view?acc_num=case1522943665759439

► Following an upper limb amputation, both the functional and sensory capabilities of the hand are lost. Prior studies demonstrated the ability of neural stimulation to… (more)

▼ Following an upper limb amputation, both the functional and sensory capabilities of the hand are lost. Prior studies demonstrated the ability of neural stimulation to evoke sensations on the missing hand of persons with upper limb loss. However, the sensations have only been cursorily assessed in terms of their perceptual characteristics and psychosocial impacts. Further, we do not know to what extent mimicking natural firing patterns can improve the stimulation-evoked sensations.Using classical psychophysical techniques, we characterized the perception of intensity of sensations evoked by electrical stimulation through Flat Interface Nerve Electrodes (FINEs) implanted in three humans with upper limb loss, and compared these characteristics to natural intensity perception. We found that intensity perception is equivalent for natural and artificial touch, including intensity sensitivity, dynamic range, and the time course and extent of adaptation resulting from prolonged stimulation. We demonstrated that population spike rate is the neural basis of perceived intensity. To determine the impact of sensation on the holistic experience of having a hand, two persons with upper limb loss utilized a sensory restoration system in their homes and communities. We found that sensation improved the psychosocial experience of using the prosthesis, including confidence in abilities, prosthesis incorporation, perception of social interactions, and body image. Sensation improved prosthesis function and increased prosthesis usage. This study indicated that extraneural stimulation is a feasible method of long-term sensory restoration in community use. Participant perspectives revealed that sensation was critical for outcome acceptance. We developed a theoretical model of the impacts of sensation based on a qualitative analysis of participant experiences, which may provide a unified framework to study outcome acceptance following amputation.To determine whether mimicking natural afferent activity would improve stimulation-evoked sensations, we developed a computational model to construct biomimetic stimulation patterns and predict the evoked firing patterns in the recruited afferent population. We tested the biomimetic patterns in three humans implanted with FINEs, and found subject-specific differences in the perceived naturalness of the biomimetic patterns. The perceived naturalness of the stimuli was influenced by subject-specific preferences, expectations for intensity, and possibly learning. The computational model demonstrated that biomimetic stimulation evokes more natural neural activation patterns than conventional stimulation. The model may be useful for generating hypotheses about the neural correlates of perception that can be tested in future studies.This work demonstrates how neural stimulation can serve as a tool to study neural coding. The perceptual similarities between natural and artificial touch indicates that stimulation-induced sensation likely utilizes the same sensory processing pathways as natural sensation. For… Advisors/Committee Members: Tyler, Dustin (Advisor), Kirsch, Robert (Committee Chair).

Subjects/Keywords: Biomedical Engineering; Neurosciences; Rehabilitation; peripheral nerve stimulation; neuroprosthesis; artificial touch; neural coding; limb loss rehabilitation; tactile sensation; psychophysics; grounded theory; biomimicry; computational modeling; sensory adaptation; perception; psychosocial outcomes

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Graczyk, E. L. (2018). Natural Perceptual Characteristics and Psychosocial Impacts of Touch Evoked by Peripheral Nerve Stimulation. (Doctoral Dissertation). Case Western Reserve University School of Graduate Studies. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=case1522943665759439

Chicago Manual of Style (16^th Edition):

Graczyk, Emily Lauren. “Natural Perceptual Characteristics and Psychosocial Impacts of Touch Evoked by Peripheral Nerve Stimulation.” 2018. Doctoral Dissertation, Case Western Reserve University School of Graduate Studies. Accessed January 23, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=case1522943665759439.

MLA Handbook (7^th Edition):

Graczyk, Emily Lauren. “Natural Perceptual Characteristics and Psychosocial Impacts of Touch Evoked by Peripheral Nerve Stimulation.” 2018. Web. 23 Jan 2021.

Vancouver:

Graczyk EL. Natural Perceptual Characteristics and Psychosocial Impacts of Touch Evoked by Peripheral Nerve Stimulation. [Internet] [Doctoral dissertation]. Case Western Reserve University School of Graduate Studies; 2018. [cited 2021 Jan 23]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=case1522943665759439.

Council of Science Editors:

Graczyk EL. Natural Perceptual Characteristics and Psychosocial Impacts of Touch Evoked by Peripheral Nerve Stimulation. [Doctoral Dissertation]. Case Western Reserve University School of Graduate Studies; 2018. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=case1522943665759439

Université de Montréal

11. Maheu, Maxime. Évaluation du système vestibulaire et ses fonctions chez les personnes sourdes avec ou sans implant cochléaire.

Degree: 2019, Université de Montréal

URL: http://hdl.handle.net/1866/22556

Subjects/Keywords: Vestibulaire; Hypoacousie; Surdité; Posture; Poids sensoriel; Vestibular; Hypoacusis; Hearing loss; Sensory weighting; Health Sciences - Audiology / Sciences de la santé - Audiologie (UMI : 0300)

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Maheu, M. (2019). Évaluation du système vestibulaire et ses fonctions chez les personnes sourdes avec ou sans implant cochléaire. (Thesis). Université de Montréal. Retrieved from http://hdl.handle.net/1866/22556

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Maheu, Maxime. “Évaluation du système vestibulaire et ses fonctions chez les personnes sourdes avec ou sans implant cochléaire.” 2019. Thesis, Université de Montréal. Accessed January 23, 2021. http://hdl.handle.net/1866/22556.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Maheu, Maxime. “Évaluation du système vestibulaire et ses fonctions chez les personnes sourdes avec ou sans implant cochléaire.” 2019. Web. 23 Jan 2021.

Vancouver:

Maheu M. Évaluation du système vestibulaire et ses fonctions chez les personnes sourdes avec ou sans implant cochléaire. [Internet] [Thesis]. Université de Montréal; 2019. [cited 2021 Jan 23]. Available from: http://hdl.handle.net/1866/22556.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Maheu M. Évaluation du système vestibulaire et ses fonctions chez les personnes sourdes avec ou sans implant cochléaire. [Thesis]. Université de Montréal; 2019. Available from: http://hdl.handle.net/1866/22556

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Aristotle University Of Thessaloniki (AUTH); Αριστοτέλειο Πανεπιστήμιο Θεσσαλονίκης (ΑΠΘ)

12. Αγακίδου, Ευανθία. ΑΠΩΛΕΙΕΣ ΒΑΡΟΥΣ ΤΟΥ ΚΡΕΑΤΟΣ ΚΑΙ ΟΡΓΑΝΟΛΗΠΤΙΚΟΣ ΕΛΕΓΧΟΣ ΤΩΝ ΚΟΝΣΕΡΒΩΝ GULASCH ΚΑΙ "ΚΡΕΑΣ ΜΕ ΦΑΣΟΛΑΚΙΑ".

Degree: 1986, Aristotle University Of Thessaloniki (AUTH); Αριστοτέλειο Πανεπιστήμιο Θεσσαλονίκης (ΑΠΘ)

URL: http://hdl.handle.net/10442/hedi/0038

►

THE WEIGHT LOSS OF MEAT IN TWO TYPES OF CANNED READY-TO-EAT FOOD IS EXAMINED. CANNED GULASCH AND MEAT WITH GREEN BEANS WERE PRODUCED AND STERILIZED… (more)

Subjects/Keywords: ΑΠΩΛΕΙΕΣ ΒΑΡΟΥΣ ΤΟΥ ΚΡΕΑΤΟΣ; ΚΟΝΣΕΡΒΑ ΓΚΟΥΛΑΣ; ΚΟΝΣΕΡΒΑ ΚΡΕΑΣ ΜΕ ΦΑΣΟΛΑΚΙΑ; Οργανοληπτικός έλεγχος; CANNED GULASH; CANNED MEAT WITH GREEN BEANS; Sensory evaluation; WEIGHT LOSS OF MEAT

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Αγακίδου, . �. (1986). ΑΠΩΛΕΙΕΣ ΒΑΡΟΥΣ ΤΟΥ ΚΡΕΑΤΟΣ ΚΑΙ ΟΡΓΑΝΟΛΗΠΤΙΚΟΣ ΕΛΕΓΧΟΣ ΤΩΝ ΚΟΝΣΕΡΒΩΝ GULASCH ΚΑΙ "ΚΡΕΑΣ ΜΕ ΦΑΣΟΛΑΚΙΑ". (Thesis). Aristotle University Of Thessaloniki (AUTH); Αριστοτέλειο Πανεπιστήμιο Θεσσαλονίκης (ΑΠΘ). Retrieved from http://hdl.handle.net/10442/hedi/0038

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Αγακίδου, Ευανθία. “ΑΠΩΛΕΙΕΣ ΒΑΡΟΥΣ ΤΟΥ ΚΡΕΑΤΟΣ ΚΑΙ ΟΡΓΑΝΟΛΗΠΤΙΚΟΣ ΕΛΕΓΧΟΣ ΤΩΝ ΚΟΝΣΕΡΒΩΝ GULASCH ΚΑΙ "ΚΡΕΑΣ ΜΕ ΦΑΣΟΛΑΚΙΑ".” 1986. Thesis, Aristotle University Of Thessaloniki (AUTH); Αριστοτέλειο Πανεπιστήμιο Θεσσαλονίκης (ΑΠΘ). Accessed January 23, 2021. http://hdl.handle.net/10442/hedi/0038.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Αγακίδου, Ευανθία. “ΑΠΩΛΕΙΕΣ ΒΑΡΟΥΣ ΤΟΥ ΚΡΕΑΤΟΣ ΚΑΙ ΟΡΓΑΝΟΛΗΠΤΙΚΟΣ ΕΛΕΓΧΟΣ ΤΩΝ ΚΟΝΣΕΡΒΩΝ GULASCH ΚΑΙ "ΚΡΕΑΣ ΜΕ ΦΑΣΟΛΑΚΙΑ".” 1986. Web. 23 Jan 2021.

Vancouver:

Αγακίδου �. ΑΠΩΛΕΙΕΣ ΒΑΡΟΥΣ ΤΟΥ ΚΡΕΑΤΟΣ ΚΑΙ ΟΡΓΑΝΟΛΗΠΤΙΚΟΣ ΕΛΕΓΧΟΣ ΤΩΝ ΚΟΝΣΕΡΒΩΝ GULASCH ΚΑΙ "ΚΡΕΑΣ ΜΕ ΦΑΣΟΛΑΚΙΑ". [Internet] [Thesis]. Aristotle University Of Thessaloniki (AUTH); Αριστοτέλειο Πανεπιστήμιο Θεσσαλονίκης (ΑΠΘ); 1986. [cited 2021 Jan 23]. Available from: http://hdl.handle.net/10442/hedi/0038.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Αγακίδου �. ΑΠΩΛΕΙΕΣ ΒΑΡΟΥΣ ΤΟΥ ΚΡΕΑΤΟΣ ΚΑΙ ΟΡΓΑΝΟΛΗΠΤΙΚΟΣ ΕΛΕΓΧΟΣ ΤΩΝ ΚΟΝΣΕΡΒΩΝ GULASCH ΚΑΙ "ΚΡΕΑΣ ΜΕ ΦΑΣΟΛΑΚΙΑ". [Thesis]. Aristotle University Of Thessaloniki (AUTH); Αριστοτέλειο Πανεπιστήμιο Θεσσαλονίκης (ΑΠΘ); 1986. Available from: http://hdl.handle.net/10442/hedi/0038

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Florida

13. Pereira, Marcio. Ripening, volatiles and sensory attributes of West Indian and Guatemalan-West Indian hybrid avocados as affected by 1-methylcyclopropene and ethylene.

Degree: PhD, Horticultural Sciences, 2010, University of Florida

URL: https://ufdc.ufl.edu/UFE0042026

► This study aimed to evaluate the effects of the ethylene inhibitor 1-methylcyclopropene (1-MCP) on ripening, volatile compounds and sensory attributes of avocado. Fruit ripening was… (more)

▼ This study aimed to evaluate the effects of the ethylene inhibitor 1-methylcyclopropene (1-MCP) on ripening, volatile compounds and sensory attributes of avocado. Fruit ripening was strongly affected by postharvest application of aqueous 1-MCP. Concentrations above 225 ug*L^-1 (4.16 mmol m^-3) and 2-min immersion treatments delayed ripening sufficiently to limit shelf life due to significant fruit shriveling and high decay severity. Ripening asynchrony (blossom end softens faster than stem end) occurs naturally and it was consistently exaggerated in all 1-MCP treatments at 200 ug*L^-1 or above; incidence was much lower for 150 ug*L^-1 treatment. However, a 4-day treatment of mid-ripe fruit with ethylene at 100 uL*L^-1 effectively promoted complete recovery from the strong ripening asynchrony caused by aqueous 1-MCP treatment at 900 ug*L^-1. Polygalacturonase activity was not directly related to ripening asynchrony. Total volatile emissions from untreated avocado pulp cubes decreased during ripening. Sesquiterpenes, mainly Beta-caryophyllene, were predominant in mature-green and mid-ripe fruit and minimally detected in ripe fruit. Alkanes were a major group in 'Booth 7' and 'Monroe' at all ripeness stages. The results suggest that ethylene is involved in ester metabolism in 'Simmonds' and of Alpha-copaene metabolism in all cultivars studied. Aqueous 1-MCP at 75 or 150 ug*L^-1 for 1 min significantly increased alkane emission in mid-ripe 'Booth 7' and 'Monroe'. Total volatile emissions were not affected by ethylene or 1-MCP in ripe 'Simmonds' fruit. Electronic nose analysis successfully classified avocado pulp by ripeness stage using fruit either untreated or treated with aqueous 1 MCP. Lower classification power was obtained when all treatments and ripeness stages were involved. Overall, a single postharvest immersion in aqueous 1-MCP (75 or 150 ug*L^-1 for 1 min) effectively extended shelf-life of West Indian and Guatemalan-West Indian hybrid avocados by 20% to 100%. At ripe stage, fruit quality remained marketable, and acceptable sensory attributes of texture, flavor and overall liking were maintained. Best results were observed for Guatemalan-West Indian hybrids and for early-harvested fruit (picking date A). ( en ) Advisors/Committee Members: Sargent, Steven A. (committee chair), Crane, Jonathan H. (committee member), Huber, Donald J. (committee member), Brecht, Jeffrey K. (committee member), Sims, Charles A. (committee member), Moretti, Celso (committee member).

Subjects/Keywords: Avocados; Electronics; Ethylene production; Flavors; Food; Fruits; Respiration; Ripening; Tomatoes; Weight loss; 1mcp, alkanes, americana, aqueous, asynchrony, avocado, betacaryophyllene, booth7, electronic, ethylene, flavor, guatemalan, monroe, nose, persea, ripening, sensory, sesquiterpenes, simmonds, texture, volatiles, westindian

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Pereira, M. (2010). Ripening, volatiles and sensory attributes of West Indian and Guatemalan-West Indian hybrid avocados as affected by 1-methylcyclopropene and ethylene. (Doctoral Dissertation). University of Florida. Retrieved from https://ufdc.ufl.edu/UFE0042026

Chicago Manual of Style (16^th Edition):

Pereira, Marcio. “Ripening, volatiles and sensory attributes of West Indian and Guatemalan-West Indian hybrid avocados as affected by 1-methylcyclopropene and ethylene.” 2010. Doctoral Dissertation, University of Florida. Accessed January 23, 2021. https://ufdc.ufl.edu/UFE0042026.

MLA Handbook (7^th Edition):

Pereira, Marcio. “Ripening, volatiles and sensory attributes of West Indian and Guatemalan-West Indian hybrid avocados as affected by 1-methylcyclopropene and ethylene.” 2010. Web. 23 Jan 2021.

Vancouver:

Pereira M. Ripening, volatiles and sensory attributes of West Indian and Guatemalan-West Indian hybrid avocados as affected by 1-methylcyclopropene and ethylene. [Internet] [Doctoral dissertation]. University of Florida; 2010. [cited 2021 Jan 23]. Available from: https://ufdc.ufl.edu/UFE0042026.

Council of Science Editors:

Pereira M. Ripening, volatiles and sensory attributes of West Indian and Guatemalan-West Indian hybrid avocados as affected by 1-methylcyclopropene and ethylene. [Doctoral Dissertation]. University of Florida; 2010. Available from: https://ufdc.ufl.edu/UFE0042026

Open Access Theses and Dissertations