Search results for "BES"

Hydrothermal Aging of an Epoxy Resin Filled with Carbon Nanofillers

2020

The effects of temperature and moisture on flexural and thermomechanical properties of neat and filled epoxy with both multiwall carbon nanotubes (CNT), carbon nanofibers (CNF), and their hybrid components were investigated. Two regimes of environmental aging were applied: Water absorption at 70 &deg

EPIGENOMICS AND METABOLOMICS MECHANISMS FOR A GENE X DIET INTERACTION MODULATING AGE-RELATED OBESITY

2018

A functional variant in the apolipoprotein AII (APOA2) gene (rs5082) predisposes homozygous carriers to age-related obesity when habitual saturated fat (SFA) intake is high. We used epigenomics, transcription and metabolomics analyses to identify currently unknown mechanisms underlying this well-replicated gene x diet interaction. We conducted an epigenome-wide scan to compare genetically at-risk to low-risk individuals with low (<22 g/d) or high (≥22 g/d) SFA intake in the Boston Puerto Rican Health Study and validated the findings in the GOLDN Study and the Framingham Heart Study. In these three populations, we identified genotype-dependent differential methylation, only with high SFA int…

Acoustic monitoring of the artificial airway — experimental results

1997

Non-invasive acoustic airway-monitoring was evaluated in an experimental study. Recording amplitude and travel time of acoustic pulse response, an acoustic pattern of airway's geometry was then calculated. Measurements on models and excised human cadaver lungs were performed to discover whether displacement or obstruction of the artificial airway could be detected by its acoustic equivalent. Regression analysis revealed a close correlation between displacement of tracheostomy tubes and the shifting of the acoustic area-distance function (corr. coeff.: 0.97-1) and an adequate correlation between acoustic and planimetrical determination of cross-sectional area within the tubes (corr. coeff.: …

Synthesis of novel organic-based fluorophores – Implementation to the design of fluorogenic enzyme substrates based on the principle of in situ synth…

2020

Detection and fluorescence imaging of biologic systems requires the implementation of efficient, robust and easy-to-use tools. Conventional fluorogenic probes currently used in microbiology lack efficiency since they are based on the single chemical modification of a fluorophore bearing an optically tunable reactive group, which often leads to incomplete fluorescence quenching. The main goal of my Ph.D thesis was to develop novel fluorogenic enzymatic substrates based on the "covalent assembly" principle. This approach also named "in situ synthesis" is based on the use of domino reactions to form a fluorescent moiety starting from a "caged" non-fluorescent molecule. In our case, the bioanal…

Las tecnologías en la promoción de la actividad física en niños obesos y con sobrepeso

2015

El objetivo de la presente tesis doctoral es intentar analizar la potencialidad de las TICs en la promoción de la AF en niños. Por una parte, se pretende analizar el papel de las estrategias atencionales durante la realización de la AF sobre el cansancio subjetivo y la respuesta afectiva en niños, utilizando la realidad virtual (RV) como medio para favorecer el empleo de estrategias atencionales disociativas. Por otra parte, se pretende diseñar una página web que contenga una tabla de ejercicio físico, específicamente diseñada para niños con problemas de sobrepeso y obesidad (Lisón et al., 2012), y comparar su eficacia, en cuanto a pérdida de peso, adherencia, aceptabilidady usabilidad con …

Obesità viscerale, rischio cardiometabolico e ipertrofia ventricolare sinistra: ruolo dell'adiponectina plasmatica

Lo studio è stato disegnato allo scopo di valutare la prevalenza delle comorbilità cardio-metaboliche e le modificazioni morfologiche della struttura del ventricolo sinistro in una coorte di pazienti suddivisi sulla scorta dei valori normali o ridotti di adiponectina.L'obiettivo principale dello studio è stato quello di analizzare se la riduzione dell'adiponectina plasmatica possa essere considerata un marker di rischio cardiometabolico.

Total energy expenditure is repeatable in adults but not associated with short-term changes in body composition

2022

Low total energy expenditure (TEE, MJ/d) has been a hypothesized risk factor for weight gain, but repeatability of TEE, a critical variable in longitudinal studies of energy balance, is understudied. We examine repeated doubly labeled water (DLW) measurements of TEE in 348 adults and 47 children from the IAEA DLW Database (mean ± SD time interval: 1.9 ± 2.9 y) to assess repeatability of TEE, and to examine if TEE adjusted for age, sex, fat-free mass, and fat mass is associated with changes in weight or body composition. Here, we report that repeatability of TEE is high for adults, but not children. Bivariate Bayesian mixed models show no among or within-individual correlation between body c…

The perception of food products in adolescents, lay adults, and experts:A psychometric approach

2022

Almost 40% of global mortality is attributable to an unhealthy diet, and adolescents and young adults are particularly affected by growing obesity rates. How do (young) people conceptualize and judge the healthiness of foods and how are the judgments embedded in people’s mental representations of the food ecology? We asked respondents to rate a large range of common food products on a diverse set of characteristics and then applied the psychometric paradigm to identify the dimensions structuring people’s mental representations of the foods. Respondents were also asked to rate each food in terms of its healthiness, and we used the foods’ scores on the extracted dimensions to predict the heal…

Prevalencia del trastorno por atracón en una muestra clínica de obesos

2012

Resumen: Introducción: El trastorno por atracón se caracteriza por presencia de episodios de sobreingesta recurrentes en un periodo corto, acompañados de pérdida de control. Este trastorno es el más frecuente de entre todos los trastornos de la conducta alimentaria en población obesa, tanto en adultos como en niños. Objetivo: El objetivo de este estudio fue obtener datos prevalencia del trastorno por atracón en una muestra de niños y adolescentes obesos, usuarios de una unidad de pediatría especializada en el tratamiento de la obesidad infantil. Material y métodos: Se contó con una muestra 70 niños y adolescentes con edades comprendidas entre los 9 y los 16 años, con una edad media de 12 añ…

Distinct maternal microbiota clusters are associated with diet during pregnancy: impact on neonatal microbiota and infant growth during the first 18 …

2020

Nutrition during pregnancy plays an important role in maternal–neonatal health. However, the impact of specific dietary components during pregnancy on maternal gut microbiota and the potential effects on neonatal microbiota and infant health outcomes in the short term are still limited. A total of 86 mother–neonate pairs were enrolled in this study. Gut microbiota profiling on maternal–neonatal stool samples at birth was carried out by 16S rRNA gene sequencing using Illumina. Maternal dietary information and maternal–neonatal clinical and anthropometric data were recorded during the first 18 months. Longitudinal Body Mass Index (BMI) and Weight-For-Length (WFL) z-score trajectories using th…