Convex politopes and quantum separability

We advance a novel perspective of the entanglement issue that appeals to the Schlienz-Mahler measure [Phys. Rev. A 52, 4396 (1995)]. Related to it, we propose an criterium based on the consideration of convex subsets of quantum states. This criterium generalizes a property of product states to convex subsets (of the set of quantum-states) that is able to uncover a new geometrical property of the separability property

Collaborative user-centred textile design research for healthcare: improving wellbeing and increasing performance

It has been widely acknowledged that collaboration across disciplines is required in order to develop innovative, sustainable textile solutions that address complex societal problems (Kane & Philpott, 2013; Igoe, 2010). Potential to develop life-changing innovations in the field of advanced textiles for medical and healthcare has been identified as a key growth sector within Scotland, with collaborative cross- disciplinary user-focused design approaches recognised as central to developing new concepts that address human needs (Malins et al. 2012). This paper describes three feasibility studies undertaken by the Textiles programme at the University of Dundee between 2012–2014; collaborative design-led research projects that supported local medical and health care companies by providing key expertise in textile design, functional clothing design methodologies and user-centred processes for design-led innovation. Analysis and discussion focuses on understanding the challenges and benefits of collaborative research between academia and local enterprise to textile design innovation, local economy, society, and education

Transparent soil for imaging the rhizosphere

Understanding of soil processes is essential for addressing the global issues of food security, disease transmission and climate change. However, techniques for observing soil biology are lacking. We present a heterogeneous, porous, transparent substrate for in situ 3D imaging of living plants and root-associated microorganisms using particles of the transparent polymer, Nafion, and a solution with matching optical properties. Minerals and fluorescent dyes were adsorbed onto the Nafion particles for nutrient supply and imaging of pore size and geometry. Plant growth in transparent soil was similar to that in soil. We imaged colonization of lettuce roots by the human bacterial pathogen Escherichia coli O157:H7 showing micro-colony development. Micro-colonies may contribute to bacterial survival in soil. Transparent soil has applications in root biology, crop genetics and soil microbiology

Iliac Vein Compression Syndrome in an Active and Healthy Young Female

Iliac vein compression syndrome is a condition involving external compression of the left common iliac vein by the right iliac artery, which was first described in the 1850s. It predominates in females typically between the third and fourth decade of life and has been associated with thrombophilias. Importantly, the syndrome is amenable to endovascular treatment. Here, we describe a case of a young athletic female with an incidental finding of a left iliac vein thrombosis while taking oral contraceptives, who was identified as having iliac vein compression syndrome on follow-up MR venography with positive testing for Factor V Leiden mutation

A special simplex in the state space for entangled qudits

Focus is on two parties with Hilbert spaces of dimension d, i.e. "qudits". In the state space of these two possibly entangled qudits an analogue to the well known tetrahedron with the four qubit Bell states at the vertices is presented. The simplex analogue to this magic tetrahedron includes mixed states. Each of these states appears to each of the two parties as the maximally mixed state. Some studies on these states are performed, and special elements of this set are identified. A large number of them is included in the chosen simplex which fits exactly into conditions needed for teleportation and other applications. Its rich symmetry - related to that of a classical phase space - helps to study entanglement, to construct witnesses and perform partial transpositions. This simplex has been explored in details for d=3. In this paper the mathematical background and extensions to arbitrary dimensions are analysed.Comment: 24 pages, in connection with the Workshop 'Theory and Technology in Quantum Information, Communication, Computation and Cryptography' June 2006, Trieste; summary and outlook added, minor changes in notatio

Transparent soil microcosms allow 3D spatial quantification of soil microbiological processes in vivo

The recently developed transparent soil consists of particles of Nafion, a polymer with a low refractive index (RI), which is prepared by milling and chemical treatment for use as a soil analogue. After the addition of a RI-matched solution, confocal imaging can be carried out in vivo and without destructive sampling. In a previous study, we showed that the new substrate provides a good approximation of plant growth conditions found in natural soils. In this paper, we present further development of the techniques for detailed quantitative analysis of images of root-microbe interactions in situ. Using this system it was possible for the first time to analyse bacterial distribution along the roots and in the bulk substrate in vivo. These findings indicate that the coupling of transparent soil with light microscopy is an important advance towards the discovery of the mechanisms of microbial colonisation of the rhizosphere

Establishing kidney transplantation in a low-income country: a case in Tanzania

Background Sub-Saharan African countries, including Tanzania, have a high burden of chronic kidney diseases (CKDs) and limited capacity for the provision of services. Tanzania and other countries in the region have made signifcant improvements in the provision of services for patients with CKD, including hemodialysis. Few countries are ofering kidney transplantation services, which is the defnitive treatment for patients with CKD and kidney failure. This study was conducted to review the steps taken by Muhimbili National Hospital (MNH) to establish a kidney transplantation service in Tanzania. Methods This study was based on the review of the activities that were undertaken to establish kidney transplantation services at Muhimbili National Hospital in Dar es Salaam, Tanzania. It was conducted by reviewing key documents developed for kidney transplantation and interviewing key personnel who were involved in the process. Results Kidney transplantation services at MNH were established in November 2017; several steps were taken in the preparatory phase including training of personnel, infrastructural modifcations, and procurement of equipment and supplies. Capacity building was achieved through international collaboration with several international and local institutions, including three Hospitals in India. The transplant team, which included nephrologists, urologists, anesthesiologists, radiologists, nurses, laboratory technicians, a transplant coordinator, and a lawyer, underwent shortterm training at BLK Hospital in India. Initial transplant procedures were carried out with support from visiting personnel from BLK, Sakra, and Seifee hospitals. In total, 72 transplant surgeries were conducted, of which 39 (54.2%) were performed with visiting teams and 31 (45.8%) by the local team independently. Of the initial 39 recipients, 56.4% were males and 43.5% were aged above 46 years. About half of the donors were brothers/sisters, and 43.5% had human leukocytic antigen haplomatch. Induction immunosuppression included basiliximab in the majority (64.1%) of recipients, and all recipients received prednisolone, tacrolimus, and mycophenolate mofetil/myfortic. Conclusions Establishing kidney transplantation in lower-income countries, such as Tanzania, is feasible; however, it requires dedicated eforts. Collaboration with local and international institutions provided an enabling environment for the transfer of skills and access to necessary supportive services

Embodied learning: Responding to AIDS in Lesotho's education sector

This is an Author's Accepted Manuscript of an article published in Children's Geographies, 7(1), 2009. Copyright @ 2009 Taylor & Francis, available online at: http://www.tandfonline.com/doi/abs/10.1080/14733280802630981.In contrast to pre-colonial practices, education in Lesotho's formal school system has historically assumed a Cartesian separation of mind and body, the disciplining of students' bodies serving principally to facilitate cognitive learning. Lesotho has among the highest HIV-prevalence rates worldwide, and AIDS has both direct and indirect impacts on the bodies of many children. Thus, students' bodies can no longer be taken for granted but present a challenge for education. Schools are increasingly seen as a key point of intervention to reduce young people's risk of contracting the disease and also to assist them to cope with its consequences: there is growing recognition that such goals require more than cognitive learning. The approaches adopted, however, range from those that posit a linear and causal relationship between knowledge, attitudes and practices (so-called ‘KAP’ approaches, in which the role of schools is principally to inculcate the pre-requisite knowledge) to ‘life skills programmes’ that advocate a more embodied learning practice in schools. Based on interviews with policy-makers and practitioners and a variety of documentary sources, this paper examines a series of school-based AIDS interventions, arguing that they represent a less radical departure from ‘education for the mind’ than might appear to be the case. The paper concludes that most interventions serve to cast on children responsibility for averting a social risk, and to ‘normalise’ aberrant children's bodies to ensure they conform to what the cognitively-oriented education system expects

Testing T Invariance in the Interaction of Slow Neutrons with Aligned Nuclei

The study of five-fold (P even, T odd) correlation in the interaction of slow polarized neutrons with aligned nuclei is a possible way of testing the time reversal invariance due to the expected enhancement of T violating effects in compound resonances. Possible nuclear targets are discussed which can be aligned both dynamically as well as by the "brute force" method at low temperature. A statistical estimation is performed of the five-fold correlation for low lying p wave compound resonances of the $^{121}$Sb, $^{123}$Sb and $^{127}$I nuclei. It is shown that a significant improvement can be achieved for the bound on the intensity of the fundamental parity conserving time violating (PCTV) interaction.Comment: 22 pages, 5 figures, published versio