Search results for "CNE"

Muscle fascicle and tendon behavior during human locomotion revisited.

2008

High-speed ultrasonography has revealed that, in human locomotion, the nature of fascicle and tendon length changes varies depending on the task, contraction intensity, and the muscles involved. The findings emphasize that the active fascicles of the gastrocnemius muscle are suddenly stretched, although they are shortening. This short-lasting stretch triggers the stretch reflex, timing of which is dependent on running speed.

Low effective population sizes and limited connectivity inxerothermic beetles: implications for the conservation ofan endangered habita

2014

Fragmentation and isolation may have detrimental effects on the viability of populations. Xerothermic grasslands, which are extra-zonal analogues of steppes, are among Europe's most endangered natural environments. Information about connectivity between the remaining habitat patches is critical for effective conservation planning. However, very little is known about the actual levels of isolation of individual xerothermic patches at the inter-regional and local scale. In this study, 16 microsatellite loci were used to investigate genetic diversity, structuring, effective sizes (Ne), and connectivity among populations of the weevil Centricnemus leucogrammus at various geographic scales. Anal…

VII: Diagnosestudien: Einfache Maße für Validität und Reliabilität

2003

The evaluation of a new diagnostic or imaging device has to focus both on its diagnostic validity and reliability. Cohen's kappa coefficient can be used to assess the agreement of the new device's findings with those of an established diagnostic reference, it therefore presents a surrogate measure of validity. Additional measures of validity are sensitivity and specificity, which assess the order of agreement with the reference for positive and negative reference findings, respectively. The latter, however, can only be applied for binary reference findings. If discordant findings are observed, the McNemar test can be used to detect a diagnostic shift between diagnostic novum and reference. …

Comparative analysis of impacted upper canines: Panoramic radiograph Vs Cone Beam Computed Tomography.

2016

Background The use of CBCT exam in the study of IMC is not new. However, it's still not known in what specific aspects CBCT exam shows a better result than then conventional exams. The aim of this study was to compare and conclude in what way the opinion regarding upper canine impaction differed when observing a panoramic image compared to the observation of a set of CBCT reconstructions. Material and Methods Twenty patients (10 males and 10 females) with a total of 28 impacted maxillary canines were identified from the database of the Department of Dentistry, Faculty of Medicine, University of Coimbra. For each canine, two different images were available: a panoramic image and a set of CBC…

Polycystic ovary syndrome

2016

Polycystic ovary syndrome (PCOS) affects 5-20% of women of reproductive age worldwide. The condition is characterized by hyperandrogenism, ovulatory dysfunction and polycystic ovarian morphology (PCOM) - with excessive androgen production by the ovaries being a key feature of PCOS. Metabolic dysfunction characterized by insulin resistance and compensatory hyperinsulinaemia is evident in the vast majority of affected individuals. PCOS increases the risk for type 2 diabetes mellitus, gestational diabetes and other pregnancy-related complications, venous thromboembolism, cerebrovascular and cardiovascular events and endometrial cancer. PCOS is a diagnosis of exclusion, based primarily on the p…

Capillaries within human skeletal muscle fibers.

1991

Internalized capillaries, i.e. capillaries within muscle fibers, represent a rare myopathological feature. This was systematically studied in 923 muscle biopsy specimens and found in 24, chiefly in the gastrocnemius muscle, more rarely in the biceps and quadriceps muscles affecting males more often than females and most frequently associated with juvenile spinal muscular atrophy or Becker's muscular dystrophy. Internalized capillaries, often multiple, ran along the long axis of the muscle fiber within an "internalized" extracellular space and were almost exclusively seen in type I myofibers. Internalization seems to start at the site of fiber splitting while penetration through the intact s…

Il mito di Procne nel corpus tragico senecano: threnos, teatro, metateatro

2006

The metaphor of the nightingale, connected with the myth of Procne and Philomela, in Seneca's tragedies.

Effect of angular velocity on soleus and medial gastrocnemius H-reflex during maximal concentric and eccentric muscle contraction.

2009

At rest, the H-reflex is lower during lengthening than shortening actions. During passive lengthening, both soleus (SOL) and medial gastrocnemius (MG) H-reflex amplitudes decrease with increasing angular velocity. This study was designed to investigate whether H-reflex amplitude is affected by angular velocity during concentric and eccentric maximal voluntary contraction (MVC). Experiments were performed on nine healthy men. At a constant angular velocity of 60 degrees /s and 20 degrees /s, maximal H-reflex and M-wave potentials were evoked at rest (i.e., H(max) and M(max), respectively) and during concentric and eccentric MVC (i.e., H(sup) and M(sup), respectively). Regardless of the muscl…

Phylogeny of Polycnemoideae (Amaranthaceae): Implications for biogeography, character evolution and taxonomy

2013

Procne e Filomela. Dal mito al simbolo letterario

2005

Una monografia sulla saga di Procne e Filomela da Omero a Ovidio, esaminata in primo luogo dal punto di vista mitografico, nello sviluppo delle diverse versioni del mito, quindi da quello metaletterario, in relazione alla metafora del poeta-usignolo e al suo percorso dalla letteratura greca arcaica alla letteratura latina di età augustea A monograph on the saga of Procne and Philomela from Homer to Ovid, surveyed first from a mythological point of view - taking into account the development of the myth's different versions -, then from a metaliterary one, following the path of the poet-nightingale metaphor from archaic Greek literature to augustan Latin literature.