Generation and detection of bound entanglement

We propose a method for the experimental generation of two different families of bound entangled states of three qubits. Our method is based on the explicit construction of a quantum network that produces a purification of the desired state. We also suggest a route for the experimental detection of bound entanglement, by employing a witness operator plus a test of the positivity of the partial transposes

Adaptation and learning processes of stroke survivors and family carers: a scoping review

Background. Knowledge on the processes of adaptation and learning after stroke are scarce, hindering the development of evidence-based public health strategies to promote survivors and family carers' health and wellbeing, across the post stroke trajectory. This study aims to assess the available evidence on the processes of adaptation and learning after stroke, by mapping the main barriers and enablers according to the perspectives of stroke survivors and family carers. Methods. A scoping review was performed, following PRISMA-ScR guidelines. The electronic databases PubMed, ISI Web of Science, PsycINFO and SciELO were searched for empirical, peer-reviewed, original, and full-length studies on the processes of adaptation and learning of stroke survivors and family carers, in March 2021. Eligibility and data extraction were conducted by two independent researchers. The main qualitative data were explored by thematic content analysis and quantitative findings were synthesized. Results. The included studies, 29 qualitative and 1 quantitative, were published between 1994 and 2019. Most of the studies were carried out with small samples and without a specific focus on the adaptation and learning processes after stroke. Barriers and enablers to stroke adaptation and learning processes were influenced by physical, psychological and social characteristics. The poor physical and functional status of survivors, the inability to maintaining the Activities of Daily Living, emotional disturbances, lack of support and information, and changes in roles, were identify as main barriers to stroke adaptation. Using coping strategies and having psychological, educational, and financial support were described as enablers. Conclusions. Public health policies and practices should consider the physical, psychological and social barriers and enablers to the stroke adaptation and learning processes to ensure a high-quality long-term care centred on survivors and family carers

Impacts from the implementation of the ISO 22000

Purpose: The main purpose of this article is to assort different impacts of the ISO 22000 implementation considering internal or external impacts, positive or negative impacts. It also intends to provide a worldwide overview on the topic, to distinguish companies from different sectors and to gather different methodologies that are used in previously published articles related with this implementation. Design/methodology/approach- Different articles of the ISO 22000 implementation from different countries were gathered and singled out according to the information that was provided. The information of interest was analyzed and rewritten according to the initially established categories. Findings- The results from several studies, researches and points of view from different authors show that the ISO 22000 implementation carries positive impacts. Negative impacts are hard to find. Most of the impacts are directly related to the organizations themselves, hence being internal impacts. Studies are mainly carried out with the help of questionnaires that are presented to the companies. Research limitations/implications- The main goal was to come across different impacts and classify them either as positive and negative or internal and external. However, its unusual to find authors that consider negative impacts from the ISO 22000 implementation. Also, external impacts are not so common. Originality/value- This article mainly highlights the ISO 22000 implementation positive impacts in worldwide organizations. It summarizes the different countries views towards Food Safety Management Systems (FSMS) and how they affect the performance of their companies.U.Porto -Universidade do Porto(undefined)info:eu-repo/semantics/publishedVersio

Structural evolution in ZrNxOy thin films as a function of temperature

Single-layered zirconium oxynitride (ZrNxOy) thin films have been deposited on steel substrates, at a constant temperature of 300 °C, by radiofrequency (rf) reactive magnetron sputtering of a pure Zr target in an argon-oxygen-nitrogen atmosphere. The variation of the flow rate of the reactive gases enabled changes in the composition and structure of the films. X-ray diffraction (XRD) and glancing incidence X-ray diffraction (GIXRD) were used to study the as-deposited films and their structural changes during or after heat treatment, from 400 to 900 °C, in controlled atmosphere and in vacuum.http://www.sciencedirect.com/science/article/B6TVV-4DPYN97-6/1/3785b40b130ad12af7221c230d2968c