Strain partitioning in transpressive shears zones in the southern branch of the Variscan Ibero-Armorican arc

The Torre de Moncorvo region (NE Portugal) is a key-sector of the Autochthon Domain of the Iberian Terrane. The region experienced Variscan deformation in the southern branch of the Ibero-Armorican Arc wherein the early structures (of Upper Devonian age—D1) denotes the establishment of a heterogeneous sinistral transpressive regime. This regime was also responsible for the development of large-scale left-lateral shear zones whose direction is subparallel to major folds. Finite strains analyses were carried out in the Torre de Moncorvo region using the normalised Fry method on different strain markers: (1) distribution of detrital quartz grains in quartzite rocks of Arenigian–Lanvirnian age; (2) arrangement of oolites in discontinuous Ordovician–Silurian ironstone horizons; (3) the rotation experienced by Skolithos preserved in Lower Ordovician metasedimentary clastic rocks. The results obtained indicate the predominance of slightly prolate strain ellipsoids. Nevertheless, the variation of their orientation around mesoscopic folds emphasises the role of strain partitioning in a transpressive regime, suggesting that different folding mechanisms were active in the course of the same deformation phase. For the studied cases, tangential longitudinal strain and flexural shear combined with regional sinistral shear seem to be the most common mechanisms of folding. Some of these three-dimensional theoretical models for strain patterns in folds could be used in other regions, where a transpressive regime is inferred.info:eu-repo/semantics/publishedVersio

Pneumatosis Cystoides Intestinalis Induced by Acarbose Treatment

A "Pneumatosis Cystoides Intestinalis" é uma situação clínica rara que se caracteriza pela presença de múltiplos quistos de conteúdo gasoso ao nível da submucosa ou subserosa na parede do tracto gastrointestinal. A pneumatose intestinal classifica-se em idiopática e secundária. Na última forma admite-se uma relação causal com doença pulmonar obstrutiva crónica, conectivites, amiloidose, colites infecciosas, oclusão intestinal, isquémia, doença de Crohn, fármacos e iatrogenia cirúrgica e endoscópica. O espectro de manifestações clínicas compreende dor abdominal, oclusão intestinal, diarreia e hemorragia digestiva. Todavia, é frequentemente assintomática ou constitui um achado incidental no decurso de uma investigação não relacionada. Os autores apresentam o caso clínico de uma doente com pneumatose quística intestinal associada à utilização terapêutica de um antidiabético oral - acarbose (inibidor da alfa-glucosidase)

Interplate versus intraplate strike-slip deformed belts: examples from SW Iberia

A complete transition in tectonic style between pure thrust belts and pure strike-slip beltscan be envisaged, both in interplate and intraplate settings, by a combination of thrust and strike-slipcomponents of displacement. The accommodation of shortening components in strike-slip deforma-tion belts has been discussed recently on the basis of two alternative perspectives: (1) the “sub-horizon-tal attachment model”, where discrete strike-slip faulting of rigid blocks in the schiszosphere evolves tocontinuous movement in plastosphere through a bottom-up driving mechanism controlled by verticalcoupling across the lithosphere, and (2) the “accommodation model” that considers decoupling with-in a heterogeneous and anisotropic plastosphere. Two examples of variable shortening componentaccommodation in strike-slip deformation belts of the SW Iberia Variscides are reported and discussed.In the Tomar-Badajoz-Córdoba shear zone, an important shortening component is accommodated inflat-lying bends around the horizontal axis within a WNW-ESE flower-structure with sinistral strike-slip component; the geodynamic evolution points to an intraplate setting for this structure. In the N-S, Porto-Tomar-Ferreira do Alentejo, dextral shear zone, the shortening component is restricted torestraining bends around the vertical axis; the geodynamic evolution allows inferring a transformnature for this structure, thus indicating an interplate setting. For these examples, the “accommodationmodel” is preferred to the “sub-horizontal attachment model”info:eu-repo/semantics/publishedVersio

The association between cardiovascular risk factors and major cardiovascular diseases decreases with increasing frailty levels in geriatric outpatients

BACKGROUND: Frailty marks a process of increasing dysregulation of physiological systems which increases the risk of adverse health outcomes. This study examines the hypothesis that the association between multiple cardiovascular risk factors (CVRF) and cardiovascular diseases (CVD) becomes stronger with increasing frailty severity. METHODS: Cross-sectional analysis of 339 older adults (55.2% women; aged 75.2 ± 9.1 years) from an outpatient geriatric clinic from a middle-income country. The frailty index (FI) was calculated as the proportion of 30 possible health deficits. We assessed hypertension, diabetes, obesity, dyslipidemia, sedentarism and smoking as CVRF (determinants) and myocardial infarction, stroke, heart failure as CVD. Poisson regression models adjusted for age, sex, and education was applied to estimate the association between frailty as well as CVRF (independent variables) with CVD (dependent variable). RESULTS: Of the 339 patients, 18,3% were frail (FI ≥ 0.25) and 32.7% had at least one CVD. Both frailty and CVRF were significantly associated with CVD (PR = 1.03, 95% CI 1.01 to 1.05; p = 0.001, and PR = 1.46, 95% 1.24 to 1.71; p < 0.001, respectively) adjusted for covariates. The strength of the association between CVRF and CVD decreased with increasing frailty levels, as indicated by a significant interaction term of frailty and CVRF (p < 0.001). CONCLUSION: Frailty and CVRF are both associated with CVD, but the impact of CVRF decreases in the presence of frailty. When confirmed in longitudinal studies, randomized controlled trials or causal inference methods like Mendelian randomization should be applied to assess whether a shift from traditional CVRF to frailty would improve cardiovascular outcome in the oldest old

Parâmetros sanguíneos de cordeiros alimentados com dietas contendo diferentes níveis de farelo de crambe em substituição ao farelo de soja.

Objetivou-se avaliar alguns parâmetros sanguíneos em cordeiros alimentados com dieta contendo farelo de crambe em substituição ao farelo de soja. Foram utilizados 40 cordeiros, com peso médio de 23 kg, distribuídos em delineamento em blocos casualizados com quatro tratamentos e 10 repetições cada. O experimento teve duração de 44 dias, precedidos de 14 dias adaptação às dietas. Os tratamentos compreenderam níveis de farelo de crambe em substituição ao farelo de soja na dieta (0,0; 30; 60 e 90%). As dietas foram isoprotéicas e isoenergéticas com proporção volumoso:concentrado de 35:65. As amostras de sangue foram coletadas antes e logo após o período de confinamento para mensurações bioquímicas. Os parâmetros bioquímicos não apresentaram diferenças significativas em relação aos níveis de farelo de crambe, mas observou-se um aparente aumento da enzima ALP e diminuição da TGO, que indica alteração na função hepática. A substituição do farelo de soja pelo farelo de crambe na dieta de cordeiros, não altera os parâmetros bioquímicos do sangue

Seleção de híbridos superiores de Brachiaria decumbens para caracteres agronômicos do Programa de Melhoramento da Embrapa Gado de Corte.

As pastagens do gênero Brachiaria decumbens, conta apenas com a cultivar Basilisk ocupando grandes áreas. Este trabalho relata os resultados da avaliação agronômica de 34 híbridos de B. decumbens visando à seleção de híbridos apomíticos superiores, candidatos a novas cultivares. O delineamento experimental utilizado foi o de blocos casualizados, com quatro repetições e cinco plantas por parcela, espaçadas de 1,0 x 0,5 m. As cultivares B. brizantha cv. Marandu e B. decumbens cv. Basilisk foram utilizadas como testemunhas

Impacto da herbivoria da mosca-branca-do-cajueiro (Aleurodicus cocois) sobre compostos voláteis liberados pelo cajueiro-anão.

A mosca-branca-do-cajueiro, Aleurodicus cocois (Curtis, 1846) (Hemiptera: Aleyrodidae), é uma das principais pragas da cultura do cajueiro, Anacardium occidentale L. O objetivo deste trabalho foi determinar em telado os perfis qualitativos e quantitativos de voláteis liberados por clones suscetível (CCP 76) e resistente (PRO 143/7) de cajueiro-anão não infestados ou infestados pela mosca-branca-do-cajueiro, Aleurodicus cocois