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Calderón, Canchanya Patricia Zunilda, Motta Miluska Yadira Garate, Senisse Caroll Hortencia Muñoz, and Cunya Marilyn Milen Paredes. "Business consulting – DINET S.A." Master's thesis, Pontificia Universidad Católica del Perú, 2020. http://hdl.handle.net/20.500.12404/18192.
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Dinet es una empresa logística, especializada en brindar servicios de logística integral.
Sin embargo, desde inicio del presente año se encuentra incursionando en proveer soluciones
logísticas para e-commerce. El objetivo de la consultoría descrita en el presente documento
fue identificar el problema principal que afronta Dinet al brindar servicios logísticos ecommerce
soportados en una empresa diseñada para proveer servicios de logística integral.
Luego de reuniones con los responsables de las diferentes áreas involucradas de la empresa se
logró levantar la información necesaria que permitió identificar los problemas internos que
actualmente afectan las operaciones y calidad de los servicios logísticos e-commerce que
Dinet brinda. El problema principal encontrado es la demora en la ejecución de procesos y
tareas en las áreas, generando ineficiencias administrativas y operativas que afectan la
rentabilidad del servicio e-commerce.
Se realizó un análisis interno, un análisis externo y se procedió a la revisión de
literatura enfocada a brindar una base para la propuesta de la solución al problema principal.
Entre la literatura revisada destacan temas como: (a) diseño organizacional, (b) cultura
organizacional y gestión del cambio, (c) herramientas de calidad, (d) procesos, y (e) servicio
al cliente. En base a lo analizado e investigado, se procedió a proponer dos alternativas de
solución al problema principal descrito. Las cuales fueron evaluadas y comparadas en los
siguientes criterios: (a) riesgo, (b) tiempo, (c) valor agregado, y (d) viabilidad económica. Se
obtuvo que la alternativa seleccionada consiste en crear un modelo de negocio e-commerce
apalancado en las áreas existentes, se requiere un presupuesto inicial de S/90,567 y se
obtendrá un ahorro de S/121,718 anual. Después, se identificaron los factores claves de éxito
y los riesgos de la propuesta. Con la información obtenida a lo largo del presente trabajo se
describió la forma de implementación sugerida para la solución propuesta. Finalmente, se
mencionaron los resultados esperado de la implementación de la solución planteada.Dinet is a logistics company, specialized in providing traditional logistics services. However, since the beginning of this year it has started providing logistics solutions for ecommerce. The purpose of the consultancy described in this document was to identify the main problem that Dinet faces when providing e-commerce logistics services since it is a company designed to provide traditional logistics services. It was necessary to have meetings with the managers of different areas, in order to gather the relevant information that make it possible to realize internal problems related to operations and quality. The main problem found is the delay in the execution of processes and tasks in the areas, generating administrative and operational inefficiencies that affects the e-commerce service profitability. An internal analysis and external analysis were carried out. Also, literature reviewed in order to provide a basis for the proposed solution to the main problem. The literature reviewed was related to the following topics: (a) organizational design, (b) organizational culture and change management, (c) quality tools, (d) processes, and (e) customer service. After this analysis and investigation, two alternatives solutions were proposed to solve the main problem described, which were evaluated and compared on the following criteria: (a) risk, (b) time, (c) added value, and (d) economic viability. The selected alternative consists of the creation of a new e-commerce business model that will be supported by the actual areas, the initial budget considered for this implementation is S/90,567, that will generate a saving of S/121,718 per year. Afterwards, the key success factors and risks that the selected alternative may have were identified. With the information obtained throughout this work, the suggested implementation plan for the proposed solution was described. Finally, the expected results of the implementation of the proposed solution were mentioned.
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Coluccia, Mariailaria. "Pierre Bourdin, Jacques Dinet e l’ombra di Descartes. Storia e sviluppi concettuali di una controversia." Thesis, Sorbonne université, 2018. http://www.theses.fr/2018SORUL097.
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Cette thèse propose une étude du débat entre Descartes et Pierre Bourdin par la reconstruction historique des évènements et par une analyse des concepts qui ressortent de la controverse. Née autour de questions concernant la dioptrique et soulevée par la publication du Discours et des Essais (1637), et en particulier après la soutenance par Charles Potier de trois thèses contre la Dioptrique en 1640, la controverse passe à la fin de 1641 sur le plan métaphysique avec la rédaction par Bourdin d’une Dissertatio qui sera incluse dans la deuxième édition des Méditations (1642) avec l’Épitre au Père Dinet. L’intervention du Père Dinet, précisément, sera décisive pour la résolution de la dispute, qui coïncide avec la publication des Principia Philosophiæ (1644), dont des copies destinées aux jésuites seront distribuées à Paris par Bourdin. Le premier chapitre est consacré aux thèmes de la critique de la Dioptrique à partir du contexte scientifique de Bourdin, en incluant les thèses de certains de ses élèves et trois manuscrits. Dans le deuxième, j’identifie par l’analyse des Objectiones et Responsiones VII un développement essentiel de la critique de Bourdin. De la méthode du doute, où les commentateurs voient généralement l’essentiel de la critique de Bourdin, dépend selon lui la faiblesse de la théorie de la distinction entre l’âme et le corps. Dans le troisième chapitre, par l’analyse de l’Épitre au Père Dinet, je reconstruis la fin de la controverse et les dynamiques qui la lient à la publication des Principia. La transcription d’une Optique, présente dans un des trois manuscrits, conclut la thèseThis study looks at the controversy between Descartes and Pierre Bourdin, providing a historical reconstruction and analysing the concepts in their debate. The dispute arose after the publication of Discours and Essais (1637) and, particularly, when Charles Potier defended three theses against the Dioptric in 1640. The dispute evolved from the scientific to the metaphysic plane with Bourdin’s redaction of a Dissertatio, which was included in the second edition of Meditations (1642) as the Seventh Set of Objections with Replies and, together with the Letter to Father Dinet, form an Appendix to Meditations. Dinet’s intervention made possible a reconciliation between Descartes and Bourdin, which coincided with the publication of Principia (1644). The first chapter is dedicated to the themes of the critic to the optic starting from Bourdin’s scientific context, using the theses of the students of the Jesuit College and the contents of three manuscripts. In the second chapter, with the analysis of Objections VII, Bourdin’s critic, which is usually considered to have its focus on the method and, precisely, on doubt, undergoes a crucial development concerning the Cartesian demonstration of real distinction. Bourdin identifies the weakness of the theory of real distinction based on the doubt. This chapter also scrutinizes a lecture of Descartes’ answer that underlines points of tension between Meditations and Answers. The third chapter, analysing Letter to Father Dinet, reconstructs the end of controversy and the dynamic that links it to the publication of Principia. A transcription of an Optic from one of three manuscripts concludes the dissertation
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Freni, Valentina. "Apport de l'imagerie scientifique à la caractérisation des pigments des œuvres du peintre orientaliste Etienne Dinet." Electronic Thesis or Diss., Sorbonne université, 2020. http://www.theses.fr/2020SORUS261.
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Au cours de cette recherche, nous avons contribué à l’étude et à la caractérisation des pigments utilisés par le peintre français Étienne Dinet à l’aube du XXe siècle. Notre approche a consisté à nous appuyer sur les manuels de peinture écrits par le peintre (Les fléaux de la peinture) dans lesquels il expose sa recherche des matériaux à utiliser en peinture. En nous basant sur ces écrits, nous avons créé une base de données de photographies scientifiques et de spectres de réflectance (visible et proche infrarouge) pour pouvoir déterminer les pigments employés dans ses tableaux. Sept tableaux ont ensuite étudié. L’imagerie scientifique nous a permis de caractériser la palette du peintre, en particulier lorsque nous avons eu la possibilité d’associer plusieurs techniques d’analyse produisant des données complémentaires. Nous avons ainsi montré l’intérêt d’employer simultanément un ensemble de techniques non invasives d’imagerie pour la caractérisation des pigments : aucun prélèvement de matière picturale n’est nécessaire et la faible quantité de lumière irradiant l’œuvre durant les mesures n’affecte pas sa conservation. La photographie technique peut fournir de nombreuses informations sur l’état de conservation d’une peinture et nous permet de détecter les interventions de restaurations effectuées au cours du temps. Elle nous permet aussi de formuler des hypothèses sur la palette du peintre. Pour confirmer ces hypothèses, il est nécessaire d’effectuer des analyses comme la fluorescence des rayons X et l’imagerie hyperspectrale, qui fournissent des informations plus précises et dont l’interprétation est plus certaineThis research aims to contribute to the study and characterization of the pigments used by the French painter Étienne Dinet at the dawn of the 20th century. Our approach draws on painting manuals written by the artist (Les fléaux de la peinture), in which he shows his search for materials to be used in painting. Based on these writings, a database of scientific photographs and reflectance spectra (visible and near infrared) was created to determine the pigments used in his paintings. Seven paintings were then studied. Scientific imaging enabled us to characterize the painter’s palette, especially when we had the opportunity to combine several analytical techniques producing complementary data. We have thus shown the value of using a set of non-invasive imaging techniques simultaneously for pigment characterization: no pictorial material is required and the low amount of light radiation during measurements does not affect its conservation. Technical photography can provide a lot of information about the state of preservation of a painting and allows us to detect restoration interventions done over time. It also allows us to make hypotheses about the painter’s palette. To confirm these hypotheses, analyses such as X-ray fluorescence and hyperspectral imaging, which provide more accurate information and more direct interpretation, are required
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Kılınç, Erdal Güngör İbrahim. "Diyet problemlerinin optimizasyonu ve bir uygulama /." Isparta : SDÜ Sosyal Bilimler Enstitüsü, 2007. http://tez.sdu.edu.tr/Tezler/TS00605.pdf.
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Hongu, Nobuko, Kiah J. Farr, and Patrick J. Gallaway. "GLUTEN-FREE DIET: IS THIS DIET FOR YOU?" College of Agriculture, University of Arizona (Tucson, AZ), 2016. http://hdl.handle.net/10150/625428.
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8 pp.With the growing popularity of the gluten-free diet, there are many misconceptions surrounding gluten, carbohydrates, celiac disease, and gluten-sensitivity. This article explains the definitions of and differences between celiac disease, gluten-sensitivity, and other gluten-related conditions. The article also addresses the risks of adopting a gluten-free diet without a medical necessity to do so. Lastly, the article provides a healthy gluten-free recipe.
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Del, Pozo Pereda Jeaneth, Llamoca Sady Fernández, Neyra Alonso Javier Rodrigo, and Martinez Edgar Jesús Asin. "Diet APP." Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2018. http://hdl.handle.net/10757/653334.
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El presente plan de negocios se ha elaborado con la finalidad de responder ante una actual situación que afronta la población referente a la creciente enfermedad de sobre peso y obesidad que a través de los años se ha multiplicado y viene siendo una de las principales causas de decesos a nivel mundial.
Nuestro proyecto consiste en la creación de un servicio de nutrición por intermedio de un aplicativo orientado en brindar atención personalizada a través de nutricionistas profesionales quienes interactúan vía online con los usuarios registrados, los cuales siguen una dieta alimenticia basados en la particularidad de adaptarse a su rutina diaria.
Para la inversión a realizar se necesitarán 124,000 nuevos soles para el desarrollo del aplicativo y página web, así como adquisición de equipos informáticos, publicidad y marketing, finalmente también disponer de suficientes fondos propios durante los seis primeros meses. Nuestro equipo de emprendedores comprometido con el proyecto aportara 60% de la cantidad requerida, pero se necesita contar con inversionistas externos para el restante. En tres años y medio se llegará al punto de equilibrio en rentabilidad, alcanzado una facturación mensual de 71,500 nuevos soles y atendiendo en proporción a 625 suscriptores.
Los emprendedores contamos con experiencias laborales las cuales nos permitirá aportar en este proyecto especialmente en las áreas: Operaciones, Comercial, Recursos Humanos y Sistemas. Asimismo, estamos comprometidos con el desarrollo y crecimiento del negocio, así como mantener y preservar un nivel de satisfacción alto de nuestros clientes.This business plan has been developed in order to respond to a current situation faced by the population concerning the growing disease of envelope weight and obesity which over the years has grown and has become one of the main causes of deaths around the world. Our project consists in the creation of a nutrition service through an application oriented in providing personalized attention through professional nutritionists who interact online with registered users, which are still a diet based on the peculiarity of adapting to your daily routine. 124,000 new soles for the application and website development will be needed for investment to be carried out, as well as acquisition of computer equipment, advertising and marketing, finally also have sufficient own funds during the first six months. Our team of entrepreneurs committed to the project would contribute 60% of the required amount, but is needed for the remaining external investors. In three and a half years you will reach the break-even point in profitability, reached a monthly turnover of 71,500 new soles and attending 625 subscribers in proportion. Entrepreneurs have work experiences which will allow us to contribute in this project especially in areas: operations, sales, human resources and systems. In addition, we are committed to the development and growth of the business, as well as maintain and preserve a high level of satisfaction of our customers.
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Gurreonero, Loureiro Fátima Antonella, Chávez Bruno Passano, and Estrada Yazmin Lucia Olazábal. "Healthy Diet." Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2019. http://hdl.handle.net/10757/626233.
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El presente trabajo evalúa la viabilidad del negocio, el desarrollo comercial y analiza financieramente la puesta en marcha de un servicio de asesoría, preparación y reparto de comida saludable en Lima.
Para el debido desarrollo del proyecto se analizó las tendencias de la comida saludable en la zona de alcance de la propuesta y se estimó la demanda de acuerdo al comportamiento de ofertas similares, estudios primarios y secundarios que fortalezcan y contribuyan a la propuesta de valor del servicio. Se realizó la idea de negocio y los procesos que hagan posible la puesta en marcha de la idea de negocio, tales como planeamiento estratégico, investigación del mercado, plan de marketing, operaciones, gestión del capital humano y plan financiero.
De acuerdo a un estudio de la OMS, la obesidad es problema público de salud, que se presenta de forma crónica, causado por diferentes factores relacionados a temas de mala alimentación y estilos de vida adoptados dentro del desarrollo social, los cuales devienen en enfermedades que representan riesgo para la salud.
Ante las tendencias analizadas se genera la idea de integrar un servicio de asesoría nutricional personalizado y la prestación de alimentos preparados en base a dietas desarrolladas de acuerdo a las necesidades de los clientes. La idea de negocio comprende un servicio holístico de alimentación para personas que desean mejorar su estilo de vida en nutrición.The present work evaluates the viability of the business, the commercial development and financially analyzes the start-up of a service of advice, development and distribution of healthy food in Lima. For the due development of the project, the trends of healthy food were analyzed in the area of scope of the proposal and the demand was estimated according to the behavior of similar offers, primary and secondary studies that strengthen and contribute to the proposal of value of the service. The idea of business and the processes that make possible the implementation of the business idea were made, such as strategic planning, market research, marketing plan, operations, human capital management and financial plan. According to a OMS study, obesity is a public health problem, which occurs chronically, caused by different factors related to issues of poor diet and lifestyles adopted within social development, which result in diseases that they represent a risk to health. In view of the analyzed trends, the idea of integrating a personalized nutritional advisory service and the provision of foods prepared based on diets developed according to the needs of customers is generated. The business idea includes a holistic food service for people who want to improve their lifestyle in nutrition.
Trabajo de investigación
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Stauble, Taylor M. "Celiac Disease: a Gluten Free Diet and Diet Quality." UKnowledge, 2013. http://uknowledge.uky.edu/foodsci_etds/13.
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The media has highlighted a proposed link between a gluten free diet (GFD) and weight loss. However, research related to weight gain and a GFD for persons with celiac disease (CD) has shown the opposite effect. A GFD is the only known treatment for persons with CD. If a patient with CD consumes a diet high in GF processed foods, weight management may be difficult to achieve.
Participants with self-reported CD completed a modified GF food frequency questionnaire (FFQ) to assess typical dietary consumption of whole grains, sweets, fruits, vegetables and regular soda. Additionally, body mass index (BMI) and exercise were assessed. The results of this study found that whole grain, fruit and vegetable intakes were low among celiac patients. Additionally, BMI was on the high end of the normal weight range.
The results of this study indicate that a greater emphasis should be placed on nutritional quality when counseling patients with CD. Registered dietitians should focus their diet counseling sessions with CD patients on a nutritious naturally GF diet in order to better manage weight.
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Hagens, Kelsey L. "DIFFERENCES IN RENAL DIET AND MEDICAL SYMPTOM KNOWLEDGE IN DIET ADHERENT AND DIET NONADHERENT ADULT HEMODIALYSIS PATIENTS." Kent State University / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=kent155502970586852.
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Legner, Kate A. "Seasonal movements, diet composition, and diet nutritional quality of Unimak Island caribou." Thesis, University of Alaska Anchorage, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=1555871.
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The Unimak Island caribou herd is in the midst of a population decline associated with low birth rates and calf survival. I evaluated the spatial and temporal complexity of caribou landscape use and the availability and nutritional quality of key forage species. First, I examined seasonal landscape use and movement using GPS collar data. Second, I determined seasonal diets to the species-level for spring, summer, and fall using a novel n-alkane and long-chain fatty acid (LCOH) method. Finally, I compared diet quality with needs for maintenance and to the quality of available plant species. Caribou home ranges were largest and movements least in the winter, and movements appeared dependent on plant phenology and weather conditions. Diets were complex and seasonally variable but generally contained higher proportions of forbs than other caribou herds likely due to their higher relative availability as compared to other preferred forages. Finally, animals foraged selectively each season, obtaining a diet that was higher in digestible dry matter and nitrogen than the average of plants available. Nutritional quality appeared to be well above requirements during the three seasons investigated. Overall, I concluded that spring, summer, and fall forage quality and availability do not impose strong constraints on Unimak Island caribou. However, I recommend that diet composition and quality be determined in the winter, the time when forage often limits the productivity of caribou herds.
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Notarnicola, Cathy. "Woven lives, weavers' voices: A family of Dine weaversspeak about Dine textiles." Thesis, The University of Arizona, 2001. http://hdl.handle.net/10150/278772.
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This research documents and discusses the reactions of a family of Dine (Navajo) weavers who were asked to examine selected Dine textiles in the Arizona State Museum's collection. Although the ways Dine weavers perceive their creations is not the focus of many studies, this research explores their aesthetics to gain a greater understanding of the weaving tradition. Building on cross-cultural interviewing techniques that originally used photographs, this study uses a selection of museum textiles to explore Dine aesthetics. The results address Dine weavers' views of the meanings and changes in Dine textile designs, the significance of the process of weaving, and the motivational forces that fuel this tradition.
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Hou, Xian Zhi. "Diet selection in sheep." Thesis, University of Edinburgh, 1991. http://hdl.handle.net/1842/28250.
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Hamilton, Daniel. "Decomposition and diet problems." Thesis, University of Edinburgh, 2010. http://hdl.handle.net/1842/3798.
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The purpose of this thesis is to efficiently solve real life problems. We study LPs. We study an NLP and an MINLP based on what is known as the generalised pooling problem (GPP), and we study an MIP that we call the cattle mating problem. These problems are often very large or otherwise difficult to solve by direct methods, and are best solved by decomposition methods. During the thesis we introduce algorithms that exploit the structure of the problems to decompose them. We are able to solve row-linked, column-linked and general LPs efficiently by modifying the tableau simplex method, and suggest how this work could be applied to the revised simplex method. We modify an existing sequential linear programming solver that is currently used by Format International to solve GPPs, and show the modified solver takes less time and is at least as likely to find the global minimum as the old solver. We solve multifactory versions of the GPP by augmented Lagrangian decomposition, and show this is more efficient than solving the problems directly. We introduce a decomposition algorithm to solve a MINLP version of the GPP by decomposing it into NLP and ILP subproblems. This is able to solve large problems that could not be solved directly. We introduce an efficient decomposition algorithm to solve the MIP cattle mating problem, which has been adopted for use by the Irish Cattle Breeding Federation. Most of the solve methods we introduce are designed only to find local minima. However, for the multifactory version of the GPP we introduce two methods that give a good chance of finding the global minimum, both of which succeed in finding the global minimum on test problems.
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Coufopoulos, Anne-Marie. "Homelessness diet and health." Thesis, Liverpool John Moores University, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.242156.
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Brennan, Matthew Philip. "The Civil War Diet." Thesis, Virginia Tech, 2005. http://hdl.handle.net/10919/33262.
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The soldierâ s diet in the Civil War has been known as poor, and a number of illnesses and disorders have been associated with it. However, a nutritional analysis placed within the context of mid-nineteenth century American nutrition has been lacking. Such an approach makes clear the connection between illness and diet during the war for the average soldier and defines the importance of nutritionâ s role in the war. It also provides a bridge from the American diet to the soldier diet, outlining correlations between the two and examining the influence of physicians, chemists, and health reformers on the Civil War diet.Master of Arts
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Honeycutt, Scott. "This Diet of Flesh." Digital Commons @ East Tennessee State University, 2016. https://www.amzn.com/1944251642.
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Metchikoff, Elena David. "Examining knowledge of the gluten-free diet among non-celiacs following the diet." Thesis, California State University, Long Beach, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=1527994.
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The purpose of this study was to investigate knowledge regarding the gluten-free diet among non-celiacs following the diet. Specifically, this study examined how knowledge differed among gluten-free diet followers by reason(s) for following a gluten-free diet, source(s) from which information on the gluten-free diet is obtained, level of education attained, age, and sex.
A convenience sample of 129 usable knowledge assessment surveys completed by non-celiac gluten-free diet followers was utilized in this study. Participants were recruited via Facebook groups or pages, or by announcement flyers that were posted on community information boards at health food stores. It was found that participants, ages 40-49, had a greater knowledge of the gluten-free diet than those ages 20-29. Subjects who were 50 or over also had greater knowledge than those of ages 20-29 years. Results indicated that greater knowledge of the gluten-free diet is associated with older age.
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Bouchard, Sarah S. "Diet selection in the yellow-bellied slider turtle, Trachemys scripta ontogenetic diet shifts and associative effects between animal and plant diet items /." [Gainesville, Fla.] : University of Florida, 2004. http://purl.fcla.edu/fcla/etd/UFE0004943.
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Sutton, Mark Robert. "Charm in dijet photoproduction at HERA." Thesis, University College London (University of London), 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.314378.
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Rui, Zhang. "Metabolic Characteristics of Primary Muscle Cells of Diet Sensitive and Diet Resistant Obese Patients." Thesis, Université d'Ottawa / University of Ottawa, 2012. http://hdl.handle.net/10393/22686.
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In the Ottawa Hospital Weight Management Clinic, we have previously identified subpopulations of patients in the upper and lower quintiles for rate of weight loss, and characterized them as ‘obese diet sensitive’ (ODS) and ‘obese diet resistant’ (ODR) patient groups, respectively. Skeletal muscle is a major contributor to basal metabolic rate and mitochondrial proton leak in skeletal muscle can account for up to 50 % of resting oxygen consumption. The overall aim of this research is to explore differences in mitochondrial function in human primary myotubes from ODS and ODR subjects.
Subsets of ODS and ODR subjects (n = 9/group) who followed a hypocaloric clinical weight loss program at the Ottawa Weight Management Clinic consented to a muscle (vastus lateralis) biopsy. Human primary myoblasts obtained from biopsies were immunopurified and differentiated into myotubes. Mitochondrial function and distribution were compared in intact myotubes from ODS and ODR subjects.
Mitochondrial proton leak was significantly lower (p< 0.05) in ODR myotubes compared to ODS myotubes, independent of whether cells were differentiated in low or high glucose medium. In addition, in low glucose medium, ODR myotubes had higher MnSOD protein levels compared to ODS myotubes (p< 0.05). However, there were no significant differences in mitochondrial content, mitochondrial membrane potential, cellular ROS levels or ATP content between ODS and ODR myotubes. Overall, our in vitro mitochondrial proton leak results are consistent with our previous ex vivo results. Future research should examine the possibility that differences in proton leak between ODS and ODR groups may be related to mechanisms of cellular ROS regulation.
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Sundström, Björn. "On diet in ankylosing spondylitis." Doctoral thesis, Umeå universitet, Reumatologi, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-48557.
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The aim of this thesis was to examine the role of diet in ankylosing spondylitis (AS). Patients were examined in: i) a postal questionnaire survey of dietary habits and gastrointestinal (GI) symptoms; ii) a study on biomarkers of diet and disease activity; iii) a comparison of cardiovascular risk factors with the general population using data from the Västerbotten Intervention Programme (VIP), and; iv) a 21-week omega-3 fatty acid supplementation study regarding the effects on disease activity. The postal survey (111 respondents) revealed no correlation between dietary habits and disease activity measured by the Bath Ankylosing Spondylitis Disease Activity Index (BASDAI). However, GI problems, and in particular GI pain, were prevalent in patients with AS irrespective of NSAID usage.Gastrointestinal pain was predicted by higher BASDAI and a higher consumption of vegetables. Overall, 30 (27%) of the patients experienced an aggravation of gastric symptoms when consuming certain foods. In the study of biomarkers (n=66) no correlation was found between diet and disease activity as assessed by BASDAI. There were, however, positive correlations between BASDAI and the content of arachidonic acid (AA) in plasma phospholipids (rs=0.39, p<0.01) and the estimated activity of the enzyme delta-5-desaturase (rs=0.37, p<0.01). This may reflect a process involved in the inflammation associated with AS that requires further investigation. Comparing data from the VIP for patients (n=89) and controls showed no significant differences regarding diet, physical activity or smoking. Nonetheless, more pronounced correlations between blood lipids and diet were identified among patients than in controls. Furthermore, the levels of cholesterol and triglycerides were lower in patients compared with controls. Lastly, in the supplementation study, a high-dose of long-chain omega-3 fatty acids (4.55 grams/day) was found to lower disease activity, as measured by BASDAI, whereas low-dose treatment (1.95 grams/day) caused no change. In conclusion, within a group of Swedish AS patients we found no correlation between ordinary dietary habits and disease activity. Diet in western populations of patients with AS may, however, be of importance for gastric symptoms and for cardiovascular risk factors. The finding of a lowered disease activity in patients on high-dose supplementation with long-chain omega-3 fatty acids indicates that a radical dietary shift may influence disease activity. The findings of a positive correlation between disease activity and plasma AA, and the decreased levels of blood lipids imply the need for further studies into fatty acid metabolism in AS.
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Rashidkhani, Bahram. "Diet and renal cell carcinoma /." Stockholm, 2005. http://diss.kib.ki.se/2005/91-7140-163-6/.
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Sutherland, Robert Matthew. "Molecular analysis of avian diet." Thesis, University of Oxford, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.365749.
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Neville, Charlotte Eleanor. "Diet, lifestyle and musculoskeletal health." Thesis, Queen's University Belfast, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.534615.
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Hawkins, Michelle Louise. "Reflux disease : Diet and Lifestyle." Thesis, London South Bank University, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.506708.
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Yusoff, Noor Aini Mohd. "Role of diet in asthma." Thesis, University of Surrey, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.245922.
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Barros, Renata Sofia da Cunha Oliveira. "Obesity, mediterranean diet and asthma." Master's thesis, Porto : edição de autor, 2007. http://hdl.handle.net/10216/62561.
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Topacio, Tracey Karen B. "Circadian Disruption, Diet, and Exercise." Kent State University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=kent1382122230.
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Lightowler, Helen. "Iodine in the vegan diet." Thesis, London South Bank University, 1997. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.336909.
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Various potential nutrient deficiencies associated with the vegan diet have been thoroughly investigated, but limited research has been undertaken to assess the iodine intake of vegans. Moreover, such research may be considered unreliable. Therefore, the aims of the current work were to firstly ascertain the main sources of iodine in the vegan diet, both dietary and pharmacological, and their frequency of consumption. Secondly, it was intended, by way of a prospective cross-sectional study, to determine the iodine intake of vegans consuming their habitual diet, and their iodine status. The current sources of iodine in the vegan diet and the frequency of consumption were assessed in 378 replies to a questionnaire advertised in 'The Vegan' - the official magazine of the Vegan Society. The main sources of iodine were identified as seaweed and seaweed products, iodised salt and iodine supplements. Over 1 in 4 of the volunteers were not consuming any of these sources and 54% were consuming only one source. Conversely, 19% were consuming at least two of the three identified sources. The preliminary findings suggested that vegans may be at risk of both iodine deficiency and toxicity and that iodine consumption was largely dependent on the iodine content of the food, the portion size and the frequency of consumption. Thirty 'healthy' vegans were recruited to the prospective study. Duplicate portions and 24 hour urine specimens were collected concurrently over four consecutive days and the iodine intake and status determined by chemical analysis. Dietary intake was also recorded and iodine intakes were determined by Comp-Eat, a computerised nutritional analysis program, to assess the reliability of this dietary survey technique. The iodine intake of the majority of the subjects was below the RNI and even below the LRNI. Moreover, the iodine status of the majority of the group investigated was low. Conversely iodine intakes of those who consumed seaweed approached levels which may be considered toxic. These findings indicate that iodine intakes may be low, however it is uncertain as to whether or not the body is able to adapt to such intakes. Furthermore, the potential effect on thyroid function of possibly toxic, but infrequent, intakes of the trace element is unclear. Finally, the study exposed a need for the availability of reliable information on iodine for vegans.
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Barros, Renata Sofia da Cunha Oliveira. "Obesity, mediterranean diet and asthma." Dissertação, Porto : edição de autor, 2007. http://catalogo.up.pt/F?func=find-b&find_code=SYS&request=000124143.
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Potgieter, Suretha. "Metabolic energy management and cancer / Suretha Potgieter." Thesis, North-West University, 2007. http://hdl.handle.net/10394/9086.
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This study examined the energy dependence of cancer cells. Glucose was found to be their main energy source. It seems possible to use this dependence to advantage in the fight against cancer. A novel experiment to reduce the blood glucose supply and utilisation was proposed. It entailed caloric restriction, suppression of glucose secretion by the liver as well as suppression of stress hormones (which elevates glucose levels). This minimises the blood glucose value. As a last step, anti-insulin is provided to inhibit cancer cells to utilise the glucose. The cancer cells are thus deprived of their main energy source. This should lead to a reduction or elimination of tumours and will aid in preventing their development. Although feasible, this method turned out to be too expensive to perform the necessary clinical trials to prove the hypothesis.
Next, the focus shifted to cancer prevention. The human energy system was analysed with the goal to reduce the circulating glucose level. The main focus here was metabolised CHO energy consumption. A previously proposed unit – the Equivalent Teaspoon Sugar, or ets , was used to quantify energy with. It was shown that cancer risk increases significantly when the recommended ets consumption per day is exceeded.
Furthermore, it was shown that including fibre in a meal reduces the ets value of the meal. One gram of fibre leads to a reduction of around 0.6 ets . The link between exercise, stress, fibre, their resulting blood glucose levels and cancer were quantified in terms of ets . Exercise expends ets , while stress causes the liver to secrete more ets . Experimental data was analysed to confirm the relationships.
In conclusion an equation was formulated to describe the combined effect of all these elements on the energy system. One’s total daily ets consumption can be obtained from the equation, and it was linked to one’s cancer risk. Adapting a lifestyle that ensures the correct daily ets intake will lead to a significant reduction in cancer risk.
This study proved that cancer cells are very dependent on sugar and a restriction of this energy source forces them into regression. Using this knowledge to advantage may help in the combat one of the biggest killers of our time – cancer.Thesis (Ph.D. (Electrical and Electronic Engineering))--North-West University, Potchefstroom Campus, 2012
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Kadawathagedara, Manik. "Maternal Diet During Pregnancy and Early Growth : Focus on Diet Duality and Food Chemicals Exposure." Thesis, Université Paris-Saclay (ComUE), 2018. http://www.theses.fr/2018SACLS014/document.
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Introduction Des études épidémiologiques ont montré qu'une restriction nutritionnelle pendant la grossesse pouvait conduire à une réponse adaptative du fœtus conduisant à une altération durable du métabolisme. Ainsi, les enfants nés avec un petit poids de naissance sont plus à risque de développer des maladies cardiovasculaires à l'âge adulte. L'exposition à des contaminants obésogènes pourrait également jouer un rôle dans l'augmentation du risque d'obésité. L’alimentation est une des principales voies d'exposition à ces contaminants. Après une description de la qualité de l’alimentation pendant la grossesse, l’objectif était d'étudier l'association entre l'exposition prénatale aux contaminants alimentaires et la croissance des enfants.MéthodesLes données de trois cohortes de naissance ont été utilisées : deux études françaises (EDEN et ELFE), et une étude norvégienne (MoBa). Les femmes de ces cohortes, ont rempli un questionnaire de fréquence alimentaire (QFA) portant sur l’alimentation pendant la grossesse. L'évaluation des contaminants a été réalisée en combinant le QFA et des bases de données de contamination, la deuxième Etude de l’Alimentation Total (EAT2) française pour EDEN et plusieurs bases de données de contamination pour MoBa. Premièrement dans ELFE, nous avons créé un score de qualité de l'alimentation et un score spécifique à la grossesse, puis nous avons étudié les facteurs associés à une meilleure qualité alimentaire. Ensuite, nous avons examiné l’association entre la qualité de l'alimentation et la croissance prénatale. Deuxièmement, nous avons étudié la relation entre un contaminant alimentaire : l'acrylamide (AA), et la croissance prénatale, dans EDEN, et la croissance postnatale, dans MoBa. Troisièmement, nous avons étendu nos analyses à tous les contaminants alimentaires de l’EAT2, en analysant les composés pris individuellement, puis considérés en mélange.RésultatsPremièrement, nous avons montré que les recommandations générales et spécifiques étaient globalement bien suivies par les femmes enceintes. Certaines caractéristiques socioéconomiques ou démographiques étaient associées à la fois au score de qualité de l’alimentation et au score spécifique de la grossesse telles que l’âge à l’accouchement, niveau d’étude et revenu du foyer et le tabagisme. Un score élevé de qualité de l’alimentation était associé à un poids de naissance plus élevé et un risque plus faible d'avoir un enfant petit pour l’âge gestationnel (PAG).Deuxièmement, nous avons montré que plus l'exposition pendant la grossesse à l’AA est importante, plus la taille de naissance était faible et plus le risque de PAG est élevé. Dans MoBa, nous avons constaté que l'exposition prénatale à l'AA était associée à une prévalence accrue d'enfants en surpoids ou obèses et à une plus grande vitesse de croissance du poids durant l’enfance.Dans EDEN, sur les 99 composés chimiques sélectionnés, le poids de naissance était associé négativement à l’exposition à quatre contaminants alimentaires et positivement à l’exposition à quatre autres. L'IMC à 5 ans était associé négativement à un contaminant. Aucune de ces associations étaient statistiquement significative après prise en compte de la multiplicité des tests. Lorsque les composés chimiques étaient considérés en mélanges, un mélange de contaminants était positivement associé au poids de naissance et aucun mélange n’était associé à l'IMC à 5 ans.ConclusionUne qualité de l’alimentation élevée est associée à un poids de naissance plus élevé et une diminution du risque de PAG, alors que l'exposition alimentaire à l'AA est associée à une altération de la croissance fœtale. L’exposition prénatale aux contaminants alimentaires, évaluée à partir des données d’EAT, ne semble pas préoccupante vis-à-vis de la croissance prénatale et postnatale précoce car les effets retrouvés sont de faible amplitude et ne sont plus significatifs après prise en compte des tests multiplesIntroduction Maternal diet is the only prenatal source of nutrients and the major source for non-nutrients and can influence foetal growth and offspring’s long-term health. Chemicals known as “obesogens” might also play a role in increasing obesity risk and one of the main route of exposure to these chemicals is through foods. After a description of diet quality during pregnancy, the aim of this thesis was to study the association between prenatal exposure to food chemicals and prenatal and postnatal growth among children.MethodsWe used the data of three birth cohort studies: two French studies (EDEN and ELFE), and a Norwegian study (MoBa). We first described the compliance to dietary guidelines of French pregnant women and the impact of a better diet quality on birth outcomes using the data of the ELFE study. Secondly, we studied the relationship of a specific food contaminant, acrylamide, on birth size in the EDEN and postnatal growth in MoBa. Finally, we extended analyses to all available food chemicals in the second French Total Diet Study (TDS).ResultsThe nutritional guidelines for pregnant women were rather well followed in ELFE. The diet quality score was associated with higher birth weight and lower risk of having a small for gestational (SGA) baby. We showed that prenatal dietary exposure to acrylamide was associated with reduced birth size in EDEN, and to increased postnatal growth in MoBA. In EDEN, on the 99 selected food chemicals, birth weight was associated with eight chemicals (four negatively and four positively). BMI at 5 years was associated with one food chemical. These results were not significant after correction for multiple testing. When using the mixture approach, one mixture of chemical was positively associated with postnatal growth.ConclusionsThe diet quality score was associated with higher birth size. Whereas dietary exposure to acrylamide was associated with impaired foetal growth, when looking at a larger number of food chemicals, we did not find concerning association on child prenatal or postnatal growth. Exposure to food chemical assessed by TDS did not appear to be of major concern for growth but other windows of susceptibility, such as early childhood, and other outcomes, such as cognitive development, should be considered in future studies
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Lightwood, Matthew Stephen. "Dijet production and multiscale QCD at HERA." Thesis, University College London (University of London), 2005. http://discovery.ucl.ac.uk/1444943/.
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This thesis describes the analysis of dijet production in photoproduction and DIS, using the ZEUS detector at HERA. At ZEUS, positrons and protons were collided with a centre of mass energy of /i = 300 GeV during the 1996-1997 running period and y/s = 318 GeV thereafter. Dijet production is studied for the all-flavours case and for the case when a charm quark is demanded. In the all-flavours analysis, the dependence of dijet production on the virtuality of the exchanged photon, Q2, was studied by measuring dijet cross sections in the range 0.0 < Q2 < 2000 GeV2, using data from the 1996-1997 running period corresponding to an integrated luminosity of 38.6 pb_1. Dijet cross sections were measured in the photon-proton centre-of-mass frame for jets with transverse energy E1 > 7.5 and 6.5 GeV and pseudorapidity in the range 3.0 < rfet < 0.0. The variable x BS, a measure of the fractional photon momentum entering the hard process, was used to enhance the sensitivity of the measurements to the photon structure. The Q2 dependence of the ratio of low to high x BS events was measured. Next-to-leading-order QCD predictions were found to generally underestimate the low x BS contribution relative to that of high x BS. Leading-logarithmic parton-shower Monte-Carlo predictions which use a partonic structure for the photon, falling smoothly with increasing Q2 provide a qualitative description of the data. The all-flavours dijet analysis was repeated with the demand that a D*(2010) meson was identified in the decay channel D* -> D0tts > (Kit)its with pr{D*) > 3.0 GeV and t7(D*) < 1.5. The charm data were collected from the running period 1996-2000, corresponding to an integrated luminosity of 120.4 pb-1, and cover the range of photon virtualities 0.0 < Q2 < 5000 GeV2. The measurements were compared to next-to-leading-order QCD predictions which were generally found to give a good description of the data. Leading order pQCD models with parton shower simulation which include a parameterisation of the virtual photon were found to give a good description of the DIS data. Such models were found to be consistent with the photoproduction data only when the non-perturbative vector meson like component of the resolved photon is removed. When no parameterisation of the hadronic component of the virtual photon was used DGLAP evolution was found to lie below the data, and CCFM evolution generally closer to the data.
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Krachler, Benno. "Diet and Cardiometabolic Disease : Dietary trends and the impact of diet on diabetes and cardiovascular disease." Doctoral thesis, Umeå : Umeå University, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-1369.
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O'Connell, Tamsin Christina. "The isotopic relationship between diet and body proteins : implications for the study of diet in archaeology." Thesis, University of Oxford, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.361527.
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Rose, Terri L. "Influence of Diet and Diet Education on Overweight and Obese Individuals: Outcomes Related to Job Performance." Cincinnati, Ohio : University of Cincinnati, 2008. http://rave.ohiolink.edu/etdc/view.cgi?acc_num=ucin1227217166.
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Thesis (M.S.)--University of Cincinnati, 2008.Advisor: Shanil Juma . Title from electronic thesis title page (viewed feb.5, 2009). Includes abstract. Keywords: Nutrition Guide; Productivity; Absenteeism: Obesity. Includes bibliographical references.
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Lemons, Claire Louise. "The Canine Diet: A Look into the Evolution and Current State of Diet in the Dog." Thesis, The University of Arizona, 2014. http://hdl.handle.net/10150/321791.
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Powolny, Anna Aleksandra. "Diet, nutrition and prostate cancer angiogenesis." Columbus, Ohio : Ohio State University, 2006. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1148992965.
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Gallagher, Nicola Emma. "Diet, hearing loss and healthy ageing." Thesis, Queen's University Belfast, 2017. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.726350.
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This thesis aimed to compare self-reported and measured hearing loss by pure-tone audiometry and to determine what factors were associated with dietary intake, hearing loss and hearing-aid uptake and use in older people. This thesis analysed data from two large cohort studies- the Caerphilly Prospective Study and the Northern Ireland Cohort for the Longitudinal Study of Ageing. The main methods involved dietary pattern (DP) analysis, statistical analysis and both quantitative and qualitative analysis of interviews. This thesis found low but significant correlations between self-reported and audiometric measures of hearing loss. Poor dental health was significantly associated with reduced appetite. Diet quality was lower in males, younger older adults, those who were unmarried, widow(er)s, those with lower education and those with a higher BML In general, healthy DPs were associated with a decreased risk of chronic conditions and may be associated with a lower risk of hearing loss, although further work is required to confirm these findings. Hearing loss was significantly associated with a greater risk of depression and loneliness. Being older, having more severe hearing loss and owning a hearing-aid for a longer period of time were associated with greater hearing-aid uptake and use. Qualitative analysis revealed three main themes; factors affecting hearing-aid use. attitudes towards hearing-aids and audiology service. Self-reported measures of hearing loss were found to be acceptable measures of hearing loss, but only when audiological assessment is not feasible. A wide range of factors can adversely affect dietary intake in older people. Further work is necessary to determine the effect of dietary assessment method on DP analysis and the effect of examining a priori and a posteriori methods on observed associations with morbidity risk. More information, follow-up support and scheduled reviews are essential to increase hearing-aid uptake and use in older people.
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Griffiths, Peter Vernon. "Diet and cognition in treated phenylketonuria." Thesis, University of Leicester, 2001. http://hdl.handle.net/2381/31319.
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Phenylketonuria (PKU) is a metabolic disease in which depletion of hepatic phenylalanine hydroxylase results in incomplete conversion of the essential amino acid phenylalanine to tyrosine. All protein contains phenylalanine which in PKU is toxic to the immature nervous system. Brain damage and mental handicap generally ensue but can be averted by restriction of dietary phenylalanine. Cognitive tests are used to monitor development and thus treatment outcome. Diet therapy prevents intellectual retardation, but mean IQ falls below age-standards and neuropsychological deficits are found in the executive domain. Questions thus remain about how to optimise treatment. This thesis summarises the history of PKU, reviews the neuropsychological literature, presents an empirical analysis of the IQ subtest profile in children representative of the treated classical PKU population and compares subjects from this group with healthy controls on measures of executive function. The historical and neuropsychological overviews concluded that early treatment practices almost certainly compromised cognitive development. The empirical studies replicated the finding that IQ in treated PKU is significantly depressed, but also indicated that adherence to present United Kingdom treatment guidelines normalises verbal but not spatial ability. Evidence from attentional measures suggested that impaired decision-making speed and poor response inhibition might underlie cognitive deficits found in treated PKU such as poor performance on executive tasks and certain measures of spatial skill. This idea is consistent with the hypothesis that executive functioning is specifically deficient, possibly as a consequence of dopamine depletion in prefrontal cortex. Support for the prefrontal executive hypothesis is at present patchy and circumstantial. Further research is required to establish its validity and whether executive deficit in treated PKU has a bearing on everyday adjustment in the individual patient. Until this is done, national treatment guidelines should not be revised downward.
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Derbridge, Jonathan. "Summer wolf diet in northwestern Montana." The University of Montana, 2010. http://etd.lib.umt.edu/theses/available/etd-06112010-154017/.
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Wolf (Canis lupus) diet can be estimated from undigested remains of prey in scats or through stable isotope analysis (SIA) of wolf hair when distinct δ13C and δ15N values of potential diet sources are known. Our objectives were to compare diet analysis methods, to estimate intra-population diet variability, and to determine proportions of prey consumed by wolves. We collected scats of 4 wolf packs in northwestern Montana from June to August 2008, and guard hairs of 45 wolves from 12 packs, May to August 2009. We calculated percent biomass consumed of deer (Odocoileus spp.), elk (Cervus canadensis), moose (Alces alces), and other items from scats, and used Pearsons chi-squared tests of proportions to measure differences among packs. We used hierarchical Bayesian stable isotope mixing models to determine diet and scales of diet variation from δ13C and δ15N values of wolves and prey. We used bootstrapped scat data, and Markov Chain Monte Carlo simulation data from stable isotopes to estimate confidence intervals of difference between results from each technique for 4 packs with matched samples. Diet results were not consistent between techniques. Deer was the most common prey item based on scats, and moose the most common based on SIA. Wolf diet was significantly different among packs based on scats, and differences among packs explained most variability in diet based on stable isotopes. We sampled 3 times as many packs for less than half the cost with SIA compared to scat analysis. Experimental data on wolf hair growth period and wolf-specific δ13C and δ15N fractionation values would provide important information for recommending the better technique.
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Sallander, Marie. "Diet and activity in Swedish dogs /." Uppsala : Swedish Univ. of Agricultural Sciences (Sveriges lantbruksuniv.), 2001. http://epsilon.slu.se/avh/2001/91-576-5840-4.pdf.
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Ireland, Amanda N. "OVERALL DIET QUALITY OF COLLEGIATE ATHLETES." UKnowledge, 2013. http://uknowledge.uky.edu/foodsci_etds/14.
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Athletes appear healthy according to weight for height and body fat standards. Though athletes appear to be healthy, little is known about their diets. Research states there is a connection between athletic performance and nutrition. The objective of this study was to determine the diet quality of 138 collegiate athletes. Data were collected in a laboratory. Demographics were collected via survey. Anthropometrics were assessed using a free standing stadiometer and the BodPod® for body fat assessment. Block 2005 Food Frequency Questionnaire© was used to assess diets. The Healthy Eating Index (HEI) 2005 was used to calculate diet quality scores. The average BMI was 23.2 (2.3) kg/m2 and the average body fat was17.8 % (6.5). The average HEI score was 51.2 (8.8). Higher HEI scores were correlated with higher body fat percentage in this sample. Diets were adequate in: calcium, iron, and vitamin C. Diets were inadequate in: fiber, fruits and vegetables intakes. The athletes had excessive intakes of sodium and total percent fats. These findings demonstrate the need for nutrition education for collegiate athletes.
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Rönning, Michael. "Ketogen diet optimal kost vid cancerbehandling?" Thesis, Umeå universitet, Kemiska institutionen, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-88875.
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Matthews, Cory. "Longitudinal Diet Studies of Arctic Whales." Marine Biological Association of the United Kingdom, 2013. http://hdl.handle.net/1993/30149.
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An animal’s foraging ecology can vary over a range of temporal scales, mirroring seasonal and longer term changes in prey availability, as well as ontogenetic shifts in diet and distribution. Obtaining individual-based, longitudinal diet information through direct observation, however, is logistically challenging for marine mammals that pursue and consume prey underwater, and are often widely distributed. Isotopic profiling along continuously growing tissues like teeth and baleen, which archive dietary inputs at the time of growth in their stable isotope composition, allows for chronological dietary reconstructions over multi-year timespans. This thesis reports longitudinal diet studies of three Arctic whale species, killer whales (Orcinus orca), bowhead whales (Balaena mysticetus) and beluga whales (Delphinapterus leucas), derived from serial isotopic measurements along teeth and baleen. Study objectives varied by species, but general goals were to characterize seasonal, ontogenetic, and/or individual diet variation.
Results revealed similar trophic-level diet, but regional spatial separation, among eastern Canadian Arctic/Northwest Atlantic killer whales. However, isotope and tooth wear differences between two individuals and the rest of the sampled whales suggested potential specialisation on sharks, while the other whales likely had diets comprising marine mammals. Cyclic isotopic variation along Eastern Canada-West Greenland bowhead whale baleen was consistent with year-round foraging, although at a reduced rate during winter. Resting zooplankton could be an important food resource outside of periods of peak productivity, and accessibility likely drives winter habitat selection. Isotopic cycling did not differ between female and male bowheads, or among age classes, indicating similar seasonal foraging patterns despite reported spatial segregation throughout their summer range. Individual beluga whales from three eastern Canadian Arctic populations varied in timing of ontogenetic diet shifts (i.e. weaning age), as well as overall trophic position, which could reflect size-specific energetic requirements and foraging capabilities. Population-specific beluga whale diet trends over a period of several decades likely reflected climate-related expansions of southern forage fish. Collectively, findings of seasonal, ontogenetic, and/or individual diet variation contribute a greater understanding of intrapopulation variation in foraging ecology of these species, and of large-scale structuring of Arctic marine ecosystems.
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Crawford, E. Margaret. "Aspects of Irish diet 1839-1904." Thesis, London School of Economics and Political Science (University of London), 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.320174.
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Cade, J. E. "Diet in three towns in England]." Thesis, University of Southampton, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.384374.
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Cook, Amanda Laurie. "Diet and bowel function in adults." Thesis, London South Bank University, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.313002.
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Heron, Jonathan Edward. "Diet choice under a foraging constraint." Thesis, University of Bristol, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.297711.
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Clements, Sarah Jayne. "The impact of diet on immunosenescence." Thesis, University of East Anglia, 2017. https://ueaeprints.uea.ac.uk/66581/.
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Introduction: The population is ageing but this accompanies increased susceptibility to infection and age-associated diseases, as well as reduced vaccination responses; potentially attributable to reduced immune function. Immunosenescence describes the deleterious effects of ageing on the immune system and is associated with a chronic, low-grade, inflammatory state; inflammaging. Habitants of Mediterranean regions maintain good health into old age; often attributed to Mediterranean (MED)-diets. Hypothesis: Adoption of a MED-diet by elderly subjects, in Norfolk, may improve immune responses of these individuals; particularly in terms of dendritic cell (DC) function and antibody diversity. Experimental approach: Elderly subjects recruited onto the Nu-AGE study were randomised to the control or MED-diet groups, for one year. Blood samples were compared from pre- and post-intervention, and to blood samples from young subjects. Study compliance was assessed using high performance liquid chromatography-with tandem mass spectrometry (HPLC-MS/MS) analysis of urine samples. Immune cell subset numbers and concentrations of secreted proteins were determined by flow cytometry, after staining for surface markers and intracellular proteins. Age and dietary impact on antibody diversity was quantitated using a novel-polymerase chain reaction (PCR)-based technique developed by the Babraham Institute. Results: The MED-diet group had higher urinary hydroxytyrosol sulphate post-intervention but self-reported diet diary analyses showed no difference in MED-diet scores. Reduced myeloid DC numbers were observed in blood samples from elderly subjects compared to young. The elevated secretion of the adipokine, resistin, after ex vivo stimulation of peripheral blood mononuclear cells (PBMCs) from elderly subjects, was significantly reduced after MED-diet intervention, but this change from baseline was not significantly different to the control group. Antibody diversity was reduced with age, dietary intervention may prevent further reductions in unique clonotypes. Conclusions: Further evidence of numerical and functional effects of ageing on DCs, are shown. The MED-diet showed potential to impact on the ageing immune cells investigated and could provide an economical approach to address problems associated with our ageing population.