A Ilha das Flores : a génese e evolução da costa ocidental da ilha das Flores.

IV Expedição Científica do Departamento de Biologia – Flores 19890 presente trabalho insere-se na expedição cientifica organizada pelo Departamento de Biologia da Universidade dos Açores, à Ilha das Flores e que decorreu de 4 a 11 de Julho de 1989. Durante o curto espaço de tempo que permanecemos, podemos observar, e debruçarmo-nos sobre a geografia física da Ilha e evolução da costa Ocidental, após os desabamentos ocorridos na Ponta da Fajã, a 18/12/87, tendo ficado soterrada uma Ermida e destruído algumas casas. Percorremos caminhos pedonais, desde a Ponta da Fajã até Ponta Delgada, a uma altitude média dos 450m, observando uma vegetação intensa e luxuriante. Apesar de nos encontrarmos em pleno verão foram inúmeras as linhas de água (perenes) que atravessamos, e quase sempre o caminho apresentava-se enlameado, tal a abundância de água nesta vertente

Metodologia científica: cultivo in vitro de unha-de-gato.

O uso da unha-de-gato como produto comercial (fitoterápico) apresenta algumas dificuldades, entre elas a falta de homogeneidade na constituição química das plantas comercializadas. Esse problema ocorre pelo fato da matéria-prima ser proveniente de áreas naturais sem nenhum controle de qualidade. Nesse sentido, a tecnologia de clonagem in vitro, apoiada por um trabalho de seleção de características desejáveis, poderá contribuir para a obtenção de plantas com maior homogeneidade e de qualidade garantida.bitstream/item/99059/1/24058.PD

Ultralight boson cloud depletion in binary systems

Ultralight scalars can extract rotational energy from astrophysical black holes through superradiant instabilities, forming macroscopic boson clouds. This process is most efficient when the Compton wavelength of the boson is comparable to the size of the black hole horizon, i.e. when the "gravitational fine structure constant" $\alpha\equiv G \mu M/\hbar c\sim 1$. If the black hole/cloud system is in a binary, tidal perturbations from the companion can produce resonant transitions between the energy levels of the cloud, depleting it by an amount that depends on the nature of the transition and on the parameters of the binary. Previous cloud depletion estimates considered binaries in circular orbit and made the approximation $\alpha\ll 1$. Here we use black hole perturbation theory to compute instability rates and decay widths for generic values of $\alpha$, and we show that this leads to much larger cloud depletion estimates when $\alpha \gtrsim 0.1$. We also study eccentric binary orbits. We show that in this case resonances can occur at all harmonics of the orbital frequency, significantly extending the range of frequencies where cloud depletion may be observable with gravitational wave interferometers.Comment: 12 pages, 6 figures. v2: references added, matches published versio

Draw, project: helping to grow talent in a university context

The main objective of this article is to establish the parallelism between the learning processes of artistic creation related to the act of projecting architecture and the discovery of talent to develop it. The dynamics of spatial configuration as a series of open processes based on graphical actions are devised. Imagination is established as the origin and act of volition of projection, meanwhile the images are defined as schemas of contents' configuration of imagination. It is discussed to convert that first mental image, as imaginary trigger, in an architecturally productive image. The experience developed in the subjects of Drawing, Analysis and Ideation 1 and 2 the teaching at the beginning of the projection, highlighting the work of graphics in the processes of architectural creation. Dynamics of teamwork between teachers and students which allow for talent discovery in all the phases of learning.El objetivo fundamental del artículo es establecer el paralelismo existente entre el aprendizaje de los procesos de creación artística relacionados con el acto de proyectar arquitectura y la detección del talento necesario para su desarrollo. Se plantea la dinámica de configuración espacial como una serie de procesos abiertos basados en acciones gráficas. Se establece la imaginación como origen y acto de voluntad del proyectar, y se definen las imágenes como esquemas de configuración de los contenidos de la imaginación. Se argumenta la necesidad de convertir esa primera imagen mental, de desencadenante imaginario, en imagen productiva arquitectónicamente. La experiencia desarrollada en las asignaturas de Dibujo, Análisis e Ideación 1 y 2 enmarca su docencia en el inicio del proyectar, evidenciando la labor del grafismo en los procesos de creación arquitectónica. Una dinámica de trabajo colectivo entre profesores y alumnos que permite la detección del talento en todas las fases del aprendizaje

Orthodontic camouflage versus orthodontic-orthognathic surgical treatment in class II malocclusion: a systematic review and meta-analysis

This systematic review was performed to compare dental, skeletal, and aesthetic outcomes between orthodontic camouflage and surgical-orthodontic treatment, in patients with a skeletal class II malocclusion and a retrognathic mandible who have already finished their growth period. A literature search was conducted, and a modified Downs and Black checklist was used to assess methodological quality. The meta-analysis was conducted using the DerSimonian–Laird random-effects method to obtain summary estimates of the standardized mean differences and corresponding 95% confidence intervals. Nine articles were included in the qualitative synthesis and seven in the meta-analysis. The difference between treatments was not statistically significant regarding SNA angle, linear measurement of the lower lip to Ricketts’ aesthetic line, convexity of the skeletal profile, or the soft tissue profile excluding the nose. In contrast, surgical-orthodontic treatment was more effective with regard to ANB, SNB, and ML/NSL angles and the soft tissue profile including the nose. Different treatment effects on overjet and overbite were found according to the severity of the initial values. These results should be interpreted with caution, due to the limited number of studies included and because they were non-randomized clinical trials. Further studies with larger sample sizes and similar pre-treatment conditions are needed

The performance of an aerated stirred tank reactor on VHG batch fermentations

The quest for new and renewable energy sources has greatly increased due to the depletion of fossil fuels reserves. Agro-food wastes appear as a cheap and renewable energy source that can contain great amounts of carbon to be transformed in bioethanol that can be used as additive to gasoline

the INFOMED database analysis

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Human lectins, their carbohydrate affinities and where to find them

POCI-01-0145-FEDER-007265Lectins are a class of proteins responsible for several biological roles such as cell-cell interactions, signaling pathways, and several innate immune responses against pathogens. Since lectins are able to bind to carbohydrates, they can be a viable target for targeted drug delivery systems. In fact, several lectins were approved by Food and Drug Administration for that purpose. Information about specific carbohydrate recognition by lectin receptors was gathered herein, plus the specific organs where those lectins can be found within the human body.publishersversionpublishe

Synthesis of 1-amino-4-(2´-thienyl)phthalazine derivatives

A synthesis of 1-amino substituted 4-(2´-thienyl)-phthalazines is described from halo- derivatives of 4-(2´-thienyl)-1-(2H)-phthalazinone 3.Fundação para a Ciência e Tecnologia. FEDER - POCTI (ref. POCTI/QUI/37816/2001)