Investigating correlation of faecal indicator bacteria and potential pathogenic fungi on Dublin beaches in the interest of public health

Sandy beaches are usually the preferred location for leisure activities but may pose a risk to public health in particular to children, the elderly and immuno compromised individuals Beach sand and marine water may be a reservoir of opportunistic and pathogenic microbes, as well as faecal indicator bacteria (that influence the bathing water quality status. The growth and the proliferation of microbes in beach sand and water are not restricted to bacteria but include also different groups of fungi such as potentially pathogenic and allergenic moulds, yeasts and dermatophytes Currently, no clear guidance about pathogenic fungi levels in relation to public health is available for these environments.info:eu-repo/semantics/publishedVersio

Detection of Multiparticle Entanglement: Quantifying the Search for Symmetric Extensions

We provide quantitative bounds on the characterisation of multiparticle separable states by states that have locally symmetric extensions. The bounds are derived from two-particle bounds and relate to recent studies on quantum versions of de Finetti's theorem. We discuss algorithmic applications of our results, in particular a quasipolynomial-time algorithm to decide whether a multiparticle quantum state is separable or entangled (for constant number of particles and constant error in the LOCC or Frobenius norm). Our results provide a theoretical justification for the use of the Search for Symmetric Extensions as a practical test for multiparticle entanglement.Comment: 5 pages, 1 figur

The environmental sustainability of Maputo self-produced settlements: The case of George Dimitrov Neighbourhood

Urban environmental sustainability is currently essential to ensure a healthy society, especially in the Self-Produced Neighbourhoods (SPN), since poverty and urbanization embody their environmental problems. However, considering that the temporal construction of the SPN sets up urban tissues linked to cultural and social values of its residents, this research aims to analyse the possibility of requalifying the Maputo SPN taking advantage of the existing one in order to reach its environmental sustainability. For this purpose, a literature review of specialty and George Dimitrov Neighbourhood (GDN) in Maputo were used as a case study to understand and discuss the research question. As a result, it was found that, despite the apparent disorder of the urban tissue of the neighbourhood, GND shows a considerable morphological and social potential that can be taken advantage of in their environmental requalification. Moreover, it has been found that poverty and the scarcity or lack of adequate technical knowledge in the neighbourhood's self-construction is the main environmental problems detected. In this point of view, it was concluded that, it is possible to requalify environmentally Maputo SPN taking advantage of existing conditions. To this end, urban public policies must, in addition to effectively taking up the urgency of SPN environmental issues in their interventions, create sustainable solutions that understand the cultural and socioeconomic logics that guide self-construction and, thus, integrate strategically in this process

Area law for fixed points of rapidly mixing dissipative quantum systems

We prove an area law with a logarithmic correction for the mutual information for fixed points of local dissipative quantum system satisfying a rapid mixing condition, under either of the following assumptions: the fixed point is pure, or the system is frustration free.Comment: 17 pages, 1 figure. Final versio

Fatores envolvidos no pico de massa óssea

Bone mass in the adult life, which is closely related to osteoporotic fracture risk, depends on the differences between the peak bone mass attained at the end of the sexual and skeletal maturation and the rate of involutional bone mass. The great variability in peak bone mass observed at adolescence is related not only to genetic factors, but also to diet, hormonal status, anthropometric variables, as weight and height, physical activity, drugs and intercurrent diseases. The identification of the factors involved with the acquisition of the peak bone mass and the comprehension of this long period of skeletal maturation will indicate strategies for prevention of osteoporosis.A massa óssea de um indivíduo adulto, que está estreitamente relacionada ao risco de fraturas osteoporóticas, depende da diferença entre o pico de massa óssea alcançado no final do período de maturação sexual e esquelética, e as perdas acumuladas durante a vida. A enorme variabilidade observada no pico de massa óssea da adolescência está relacionada, principalmente, a fatores genéticos, mas também a parâmetros antropométricos, como peso e altura, hábitos dietéticas, influências hormonais diversas, atividade física, uso de medicamentos e doenças intercorrentes. A identificação dos fatores envolvidos na aquisição do pico de massa óssea na infância e adolescência e a compreensão deste longo período de maturação esquelética, permitirão a criação de estratégias para prevenção da osteoporose.Universidade Federal de São Paulo (UNIFESP) Escola Paulista de MedicinaUNIFESP, EPMSciEL

The quantum one-time pad in the presence of an eavesdropper

A classical one-time pad allows two parties to send private messages over a public classical channel -- an eavesdropper who intercepts the communication learns nothing about the message. A quantum one-time pad is a shared quantum state which allows two parties to send private messages or private quantum states over a public quantum channel. If the eavesdropper intercepts the quantum communication she learns nothing about the message. In the classical case, a one-time pad can be created using shared and partially private correlations. Here we consider the quantum case in the presence of an eavesdropper, and find the single letter formula for the rate at which the two parties can send messages using a quantum one-time pad

Quantifying Quantum Correlations in Fermionic Systems using Witness Operators

We present a method to quantify quantum correlations in arbitrary systems of indistinguishable fermions using witness operators. The method associates the problem of finding the optimal entan- glement witness of a state with a class of problems known as semidefinite programs (SDPs), which can be solved efficiently with arbitrary accuracy. Based on these optimal witnesses, we introduce a measure of quantum correlations which has an interpretation analogous to the Generalized Robust- ness of entanglement. We also extend the notion of quantum discord to the case of indistinguishable fermions, and propose a geometric quantifier, which is compared to our entanglement measure. Our numerical results show a remarkable equivalence between the proposed Generalized Robustness and the Schliemann concurrence, which are equal for pure states. For mixed states, the Schliemann con- currence presents itself as an upper bound for the Generalized Robustness. The quantum discord is also found to be an upper bound for the entanglement.Comment: 7 pages, 6 figures, Accepted for publication in Quantum Information Processin