The orthogonally aligned dark halo of an edge-on lensing galaxy in the Hubble Frontier Fields: a challenge for modified gravity

postprin

Hubble Frontier Field Free-form Mass Mapping of the Massive Multiple-merging Cluster MACSJ0717.5+3745

published_or_final_versio

Hubble Frontier Field Free-form Mass Mapping of the Massive Multiple-merging Cluster MACSJ0717.5+3745

published_or_final_versio

Potential impact of a maternal vaccine for RSV: a mathematical modelling study

Respiratory syncytial virus (RSV) is a major cause of respiratory morbidity and one of the main causes of hospitalisation in young children. While there is currently no licensed vaccine for RSV, a vaccine candidate for pregnant women is undergoing phase 3 trials. We developed a compartmental age-structured model for RSV transmission, validated using linked laboratory-confirmed RSV hospitalisation records for metropolitan Western Australia. We adapted the model to incorporate a maternal RSV vaccine, and estimated the expected reduction in RSV hospitalisations arising from such a program. The introduction of a vaccine was estimated to reduce RSV hospitalisations in Western Australia by 6-37% for 0-2month old children, and 30-46% for 3-5month old children, for a range of vaccine effectiveness levels. Our model shows that, provided a vaccine is demonstrated to extend protection against RSV disease beyond the first three months of life, a policy using a maternal RSV vaccine could be effective in reducing RSV hospitalisations in children up to six months of age, meeting the objective of a maternal vaccine in delaying an infant's first RSV infection to an age at which severe disease is less likely

A importância dos valores numa gestão de recursos humanos socialmente responsável - estudo de caso numa empresa seguradora angolana

A análise dos valores e a importância dos mesmos na organização e na gestão é o ponto de partida do tema em abordagem. Pretende-se entender como a observância de valores é determinante na gestão socialmente responsável. Destacaremos o papel dos modelos de gestão de recursos humanos e da cultura da organização, onde são criados e veiculados os valores organizacionais, enfatizando-se a ética e a responsabilidade social. Nesta Dissertação realizou-se um Estudo de Caso numa grande seguradora angolana, onde através da análise documental, da observação directa e de entrevistas semi-estruturadas a informantes-chave foi possível inventariar os valores organizacionais e caracterizar as principais políticas numa perspectiva de gestão de recursos humanos socialmente responsável; ABSTRACT: The analysis of the values and its importance at organization and management is the starting point of the theme approach. The aim is to understand how the observance of values is crucial in the socially responsible management. Highlight the role of models in human resource management and organizational culture, where they are created and conveyed organizational values, emphasizing ethics and social responsibility. In this thesis we performed a case study in a large insurance company of Angola, where through the document analysis, direct observation and semi-structured interviews with key informants was possible to make an inventory of organizational values and characterize the main policies from the perspective of resource management socially responsible human

Orbital superfluidity in the PP-band of a bipartite optical square lattice

The successful emulation of the Hubbard model in optical lattices has stimulated world wide efforts to extend their scope to also capture more complex, incompletely understood scenarios of many-body physics. Unfortunately, for bosons, Feynmans fundamental "no-node" theorem under very general circumstances predicts a positive definite ground state wave function with limited relevance for many-body systems of interest. A promising way around Feynmans statement is to consider higher bands in optical lattices with more than one dimension, where the orbital degree of freedom with its intrinsic anisotropy due to multiple orbital orientations gives rise to a structural diversity, highly relevant, for example, in the area of strongly correlated electronic matter. In homogeneous two-dimensional optical lattices, lifetimes of excited bands on the order of a hundred milliseconds are possible but the tunneling dynamics appears not to support cross-dimensional coherence. Here we report the first observation of a superfluid in the $P$-band of a bipartite optical square lattice with $S$-orbits and $P$-orbits arranged in a chequerboard pattern. This permits us to establish full cross-dimensional coherence with a life-time of several ten milliseconds. Depending on a small adjustable anisotropy of the lattice, we can realize real-valued striped superfluid order parameters with different orientations $P_x \pm P_y$ or a complex-valued $P_x \pm i P_y$ order parameter, which breaks time reversal symmetry and resembles the $\pi$-flux model proposed in the context of high temperature superconductors. Our experiment opens up the realms of orbital superfluids to investigations with optical lattice models.Comment: 5 pages, 5 figure

The evolution of peripheral nerve treatment for trigeminal neuralgia - peripheral nerve surgery

Trigeminal neuralgia typically presents with a sudden and severe facial pain. Although peripheral nerve injection can produce good pain relief in the treatment of trigeminal neuralgia, their effect may not be permanent. Surgical treatment has always been an alternative for patients who do not respond well to medical treatment or, for those who are severely affected by the side effects of anticonvulsants. Unknown to most young healthcare providers, surgical treatment was the first line treatment at the turn of the 19th century till 1960s. This review narrates the evolution of peripheral nerve treatment for trigeminal neuralgia over the last 150 years

The evolution of peripheral nerve treatment for trigeminal neuralgia - peripheral injections

Trigeminal neuralgia presents as a characteristic severe painful condition that usually afflicts the area(s) innervated by the branches of the facial sensory nerves, especially the elderly females. The diagnosis can usually be made based solely on the presenting clinical signs and symptoms. Early literatures had revealed that there have always been two major means of treatment for trigeminal neuralgia; medical and surgical. Medical treatments involved systemic intake of various drugs or the topical applications of many different materials, not forgetting that bleeding and purging has been tried in the past. The introduction of anti-convulsants during thesecond World War had changed completely the way this painful condition was treated as this therapy later become the mainstay treatment for trigeminal neuralgia. Their beneficial effects, however may not be long lasting. This review summarises the evolution of peripheral nerve injection as a treatment for trigeminal neuralgia over the last 150 years