Caracterização de variedades de arroz

Mestrado em Biotecnologia - Industrial e AmbientalO presente estágio curricular foi realizado em colaboração com a Novarroz, uma empresa cuja principal atividade é a transformação e comercialização de arroz. O arroz (Oryza sativa) é um dos produtos mais consumidos em todo o mundo, caracterizando-se por ser uma importante fonte de energia e nutrientes. O presente trabalho pretende definir as características de várias variedades do arroz e determinar as variedades com menor Índice Glicémico. Foram analisadas variedades conhecidas das subespécies Indica e Japónica, assim como arroz comercial existente no mercado e declarado como tendo baixo IG de colheitas entre 2011 a 2016. Verificou-se que as variedades da subespécie Indica apresentam uma relação comprimento/largura superior e menores valores de brancura que a subespécie Japónica. Demonstrou-se que o pico da viscosidade é menor nas variedades da subespécie Indica, refletindo-se na menor absorção de água ao longo da cozedura do arroz por parte destas variedades. O valor de breakdown é superior nas variedades da subespécie Japónica, sendo este parâmetro inversamente proporcional com a capacidade em suportar o calor. A subespécie Indica tem maiores valores de retrogradação, ou seja, os grânulos de amido gelatinizados reorganizam-se mais facilmente do que dos grânulos de amido gelatinizados da subespécie Japónica. O amido total das variedades estudadas varia entre 66.6±0.2% e 93.8±2.6%, demonstrando ter valores superiores nas variedades branqueadas. Quando o arroz é imerso em água, durante 1 hora a temperatura ambiente, a percentagem de amido total no grão diminui. A razão amilose/amilopectina, parâmetro muito importante no comportamento do arroz, é superior nas variedades da subespécie Indica e variedades comerciais. O conteúdo proteico é superior nas variedades da subespécie Indica, ocorrendo também a diminuição de conteúdo proteico quando imerso. O Índice Glicémico das variedades varia entre 63.4±0.7 e 86.5±1.4. Quando os grãos de arroz são imersos, o valor do índice glicémico diminui na maioria das variedades. Depois dos grãos imersos, a variedade Indica 18-16 é a que apresenta menor valor de índice glicémico (IG= 62.2±0.7).This curricular internship was carried out in collaboration with Novarroz, a company whose main activity is the processing and the marketing of rice. The rice (Oryza sativa) is one of the most consumed products in the world. It is an important source of energy and nutrients. The present work intends to define the characteristics of rice varieties and determine varieties of rice with lower Glycaemic Index. The varieties analysed were Indica and Japónica subspecies and rice varities on market as low GI, of harvests from 2011 a 2016. It has been found that the varieties of the Indica subspecies have a higher length/width ratio and lower whiteness values than Japonica subspecies. The viscosity peak is lower in the Indica subspecies, reflecting the lower absorption of water during the cooking rice. The breakdown value is higher in varieties of Japonica subspecies and is inversely proportional to the capacity to withstand heat. The Indica subspecies has higher setback values, then the gelatinized starch granules are more easily rearranged than the gelatinized starch granules of Japonica subspecies. The total starch of the studied varieties varies between 66.6±0.2% and 93.8±2.6%, showing have higher values in the milled rice varieties. When the rice is immersed in water for 1 hour, the percentage of total starch in the grain reduces. The amylose/amylopectin ratio, a very important parameter in rice behaviour, is higher in Indica subspecies and commercial varieties. The protein content is higher in Indica subspecies also occur the decrease of protein content when the grains are immersed. The glycaemic index range between 63.4±0.7 and 86.5±1.4. When the rice grains are immersed, the glycaemic index value decreases. After the immersed grains, the variety Indica 18-16 has the lowest glycaemic index value (IG= 62.2±0.7)

Descrição de fêmeas da raia Dasyatis colarensis Santos, Gomes & Charvet-Almeida, 2004 (Chondrichthyes, Myliobatiformes, Dasyatidae)

The original description of Dasyatis colarensis was based solely on male specimens, when the females were until then unknown. Females were collected later in 2004 at the type locality, and they are described herein. An emended diagnosis for the species is also provided. Some characters only verified in females, as a slight notch on the medial portion of the snout, crenulate teeth crowns, and dermal denticles at the ventral side of the disc were identified as secondary sexual dimorphism. The maximum size of D. colarensis was also increased, for more than 2600mm of total length and 900mm of disc width.A descrição original de Dasyatis colarensis foi feita com base apenas em exemplares machos, pois as fêmeas eram desconhecidas até então. Fêmeas somente foram coletadas posteriormente em 2004, na localidade tipo, e aqui são descritas. Uma diagnose emendada para a espécie é apresentada. Alguns caracteres somente verificados nas fêmeas, como uma chanfradura na porção medial do focinho, dentes com coroa crenulada e dentículos dérmicos na face ventral do disco foram identificados como dimorfismos sexuais secundários. O tamanho máximo de D. colarensis também foi redimensionado, para mais de 2600mm de comprimento total e 900mm de largura de disco

Do difficulties in emotion regulation impact self-esteem and adult attachment?

Poster presented at the 4th International Congress of CiiEM – “Health, Well-being and Ageing in the XXI Century.” 2-5 June 2019, Campus Egas Moniz, Monte de Caparica, PortugalN/

Do difficulties in emotion regulation impact self-esteem and adult attachment? – the role of trauma

Abstract in proceedings of the Fourth International Congress of CiiEM: Health, Well-Being and Ageing in the 21st Century, held at Egas Moniz’ University Campus in Monte de Caparica, Almada, from 3–5 June 2019.This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.info:eu-repo/semantics/publishedVersio

Biology undergraduate students’ views of assessment: Methods, purposes and effects

This paper draws on data from research focusing on assessment methods, its purposes and effects, effectiveness and fairness, as well as student participation and feedback. In total, 124 biology undergraduate students participated in the study. Data were collected through questionnaires and focus groups. Findings reveal written testing as the most used method. Students associate assessment mainly with a summative purpose. Although students report they negotiate some assessment-related aspects with teachers, in general they do not participate in self and peer assessment. Feedback is clearly recognized as an important feature in the assessment process. Implications of the findings are discussed

Coping strategies in the management of traumatic events and cognitive and emotional processing from disclosure

Poster presented at the 3rd International Congress of CiiEM - Research and Innovation in Human and Health Sciences. Monte da Caparica, Portugal, 20-22 June 2018.N/

Metals transfer from tobacco to cigarette smoke: Evidences in smokers’ lung tissue

Tobacco use kills millions of people every year around the world. The current level of 11 metals in tobacco was determined and their transfer rate to cigarette smoke was calculated as the difference between the total metal content in cigarettes and the amount present in its ashes. The metals content was also determined in the lung tissue of smokers and non-smokers in order to evaluate the marks that smoking leaves in this tissue. Metals content in tobacco ranged from less than 1μg/g (Co, Cd, Pb, As and Tl) to several hundreds of μg/g (Al, Mn and Ba). The highest transfer rate from tobacco to cigarette smoke was found for Tl (85-92%) and Cd (81-90%), followed by Pb (46-60%) and As (33-44%). Significantly higher levels of As, Cd and Pb were found in the lung tissue of smokers compared to non-smokers, showing that smoking results in an increase of these metals in the lungs and that they contribute to the carcinogenic potential of cigarette smoke. This study presents important data on current metals content in tobacco and its transference to cigarette smoke and provides evidence of their accumulation in smokers' lung tissue.info:eu-repo/semantics/publishedVersio

potential risk factors for patient and healthcare delays in Portugal

Funding Information: Fundação para a Ciência e Tecnologia provided financial support to conduct this research [Grant: PTDC/SAU-PUB/31346/2017]. Publisher Copyright: © 2021, The Author(s).Background: Early diagnosis and treatment of pulmonary tuberculosis (PTB) is essential for an effective control of the tuberculosis (TB) epidemic. Delayed diagnosis and treatment of TB increases the chance of complications and mortality for the patients, and enhances TB transmission in the population. Therefore, the aim of this study was to characterize patient, healthcare and total delay in diagnosing PTB and assess the effect of clinical and sociodemographic factors on the time until first contact with healthcare or reaching a PTB diagnosis. Methods: Retrospective cohort study that included active PTB patients notified in the National Tuberculosis Surveillance System (SVIG-TB), between 2008 and 2017. Descriptive statistics, Kaplan-Meier estimates, logrank test and Cox proportional hazards model were used to characterize patient, healthcare and total delay and estimate the effect of clinical and sociodemographic variables on these delays. Significance level was set at 0.05. Results: Median patient, healthcare and total delays was 37 days (Interquartile range (IQR): 19–71), 8 days (IQR: 1–32) and 62 days (IQR: 38–102), respectively. The median patient delay showed a constant increase, from 33 days in 2008 to 44 days in 2017. The median total delay presented a similar trend, increasing from 59 days in 2008 to 70 days in 2017. Healthcare delay remained constant during the study period. More than half of the PTB cases (82.9%) had a delay > 1 month between symptom onset and diagnosis. In the final Cox model, alcohol abuse, unemployment and being from a high TB incidence country were factors significantly associated with longer patient delay, while being female, having more than 45 years, oncologic and respiratory diseases were associated with longer healthcare delay. Being female, having more than 45 years and being from a high TB incidence country were associated with longer total delay. Conclusions: Patient delay and total delay have increased in recent years. Older patients, patients with alcohol problems, other comorbidities, unemployed or from countries with high TB incidence would benefit from the development of specific public health strategies that could help reduce the delay in TB diagnosis observed in our study. This study emphasizes the need to promote awareness of TB in the general population and among the healthcare community, especially at ambulatory care level, in order to reduce the gap between beginning of symptoms and TB diagnosis.publishersversionpublishe