Quark matter contribution to the heat capacity of magnetized neutron stars

In this paper, we find the heat capacity of the magnetic dual chiral density wave (MDCDW) phase of dense quark matter and use it to explore the feasibility of this phase for a neutron star interior. MDCDW is a spatially inhomogeneous phase of quark matter known to be favored at intermediate densities over the chirally symmetric phase and the color-flavor-locked superconducting phase. By comparing our result to the lower limit of the core heat capacity established from observations of transiently accreting neutron stars, we show that the heat capacity of MDCDW quark matter is well above that lower limit and hence cannot be ruled out. This result adds to a wealth of complementary investigations, all of which has served to strengthen the viability of a neutron star interior made of MDCDW quark matter. For completeness, we review the contributions to the heat capacity of the main neutron star ingredients at low, high and intermediate densities, with and without the presence of a magnetic field.Comment: To appear in PR

The role of parental alcohol use, parental discipline and antisocial behaviour on adolescent drinking trajectories

Backgrounds: : Parental drinking, harsh parental discipline and adolescent antisocial behaviour have been independently implicated in adolescent alcohol use. Robust prospective studies are required to examine developmental relationships between these factors and their effect on trajectories of alcohol use across adolescence

The caring process of an adolescent experiencing transition to maternal role

Artigo de reflexão que aborda os aspectos evolutivos ao longo da história do desvelamento do termo transição, sua utilização em diferentes contextos de atuação do enfermeiro, mas principalmente enfatiza a transição ao papel materno vivenciada pela adolescente. Busca ainda, explicitar a mediação do enfermeiro, através do cuidado com envolvimento do ser adolescentepuérpera, para facilitar o enfrentamento e adaptação ao novo papel. Explicita a trajetória percorrida pelo ser-adolescente puérpera ao vivenciar a simultaneidade da transição desenvolvimental, transição situacional gestacional e a retomada da transição desenvolvimental no pós-parto. Essas etapas são permeadas pelo cuidado transicional realizado pelo enfermeiro no alcance das metas subjacentes à mudança de forma saudável.The caring process of an adolescent experiencing transition to maternal roleAbstractIt is a thought-provoking article which addresses evolutionary aspects, along the history of elucidating the word transition, its use in different contexts of nurses scope, but this study ultimately stresses the transition to maternal role experienced by an adolescent. It also aims to elicit nurses mediation through caring and the puerperal teenage beings involvement in order to facilitate coping and adjustment to the new role. It elicits the puerperal adolescent beings trajectory experiencing the simultaneity of developmental transition, gestational situational transition and once more developmental transition after delivery. These stages are permeated by transitional care, rendered by nurses, trying to accomplish the underlying goals to change in a healthy way.It is a thought-provoking article whichaddresses evolutionary aspects, along the history ofelucidating the word “transition’, its use in differentcontexts of nurses’ scope, but this study ultimatelystresses the transition to maternal role experiencedby an adolescent. It also aims to elicit nurses’ mediation through caring and the puerperal teenagebeing’s involvement in order to facilitate coping andadjustment to the new role. It elicits the puerperaladolescent being’s trajectory experiencing thesimultaneity of developmental transition, gestationalsituational transition and once more developmentaltransition after delivery. These stages are permeatedby transitional care, rendered by nurses, trying toaccomplish the underlying goals to change in ahealthy way

Giant Negative Thermal Expansion Induced by the Synergistic Effects of Ferroelectrostriction and Spin-Crossover in PbTiO3-Based Perovskites

The discovery of unusual negative thermal expansion (NTE) provides the opportunity to control the common but much desired property of thermal expansion, which is valuable not only in scientific interests but also in practical applications. However, most of the available NTE materials are limited to a narrow temperature range, and the NTE effect is generally weakened by means of various modifications. Here, we report an enhanced NTE effect that occurs over a wide temperature range (\alpha V = -5.24 * 10-5 {\deg}C^-1, 25-575 {\deg} C), and this NTE effect is accompanied by an abnormal enhanced tetragonality, a large spontaneous polarization, and a G-type antiferromagnetic ordering in the present perovskite-type ferroelectric of (1-x)PbTiO3-xBiCoO3. Specifically, for the composition of 0.5PbTiO3-0.5BiCoO3, an extensive volumetric contraction of ~4.8 % has been observed near the Curie temperature of 700 {\deg}C, which represents the highest level in PbTiO3-based ferroelectrics. According to our experimental and theoretical results, the giant NTE originates from a synergistic effect of the ferroelectrostriction and spin-crossover of cobalt on the crystal lattice. The actual NTE mechanism is contrasted with previous functional NTE materials, in which the NTE is simply coupled with one ordering such as electronic, magnetic, or ferroelectric ordering. The present study sheds light on the understanding of NTE mechanisms and it attests that NTE could be simultaneouslycoupled with different orderings, which will pave a new way toward the design of large NTE materials.Comment: 30 page

Increasing Servers’ Tips: What Managers Can Do and Why They Should Do It

Tipping is generally regarded in the industry as more of a server concern than a managerial one. For this reason, it is the rare restaurant executive or manager who tries to actively influence the level of his or her servers’ tip incomes. I believe that is a mistake --that restaurant executives and managers can and should increase their servers’ tip incomes. First, I present several tactics that servers can use to increase their own tips. Then, I describe the role that executives and managers can play in encouraging servers’ use of these tactics. Finally, I explain how executives and managers will benefit from encouraging servers to try these tactics

HUMAN CARING AND SELF CARE: CONTRIBUTION OF OREM AND WATSON TO NURSING KNOWLEDGE

Orem e Watson, são duas teoristas de enfermagem que estão contribuindo, significativamente com a construção de uma base conceptual que amplia o corpo de conhecimentos de enfermagem . Este artigo procura ressaltar o contraste das origens paradigmáticas de suas teorias, suas visões a respeito da natureza da enfermagem , das estratégias utilizadas para desenvolvimento da teoria, bem como suas contribuições para o desenvolvimento da ciência de enfermagem.Orem and Watson are two nursing theorists who have given significant contribution to nursing by developing a conceptual basis which increases the body of nursing knowledge. This article emphasizes opposing views in regards to the paradigmatic origem of their theories, and the nature of nursing. Also comments on the strategies for theory development utilized by the two theorists, and on their contribution to nursing science

Geometry can provide long-range mechanical guidance for embryogenesis

Downstream of gene expression, effectors such as the actomyosin contractile machinery drive embryo morphogenesis. During $\textit{Drosophila}$ embryonic axis extension, actomyosin has a specific planar-polarised organisation, which is responsible for oriented cell intercalation. In addition to these cell rearrangements, cell shape changes also contribute to tissue deformation. While cell-autonomous dynamics are well described, understanding the tissue-scale behaviour challenges us to solve the corresponding mechanical problem at the scale of the whole embryo, since mechanical resistance of all neighbouring epithelia will feedback on individual cells. Here we propose a novel numerical approach to compute the whole-embryo dynamics of the actomyosin-rich apical epithelial surface. We input in the model specific patterns of actomyosin contractility, such as the planar-polarisation of actomyosin in defined ventro-lateral regions of the embryo. Tissue strain rates and displacements are then predicted over the whole embryo surface according to the global balance of stresses and the material behaviour of the epithelium. Epithelia are modelled using a rheological law that relates the rate of deformation to the local stresses and actomyosin anisotropic contractility. Predicted flow patterns are consistent with the cell flows observed when imaging $\textit{Drosophila}$ axis extension $\textit{in toto}$, using light sheet microscopy. The agreement between model and experimental data indicates that the anisotropic contractility of planar-polarised actomyosin in the ventro-lateral germband tissue can directly cause the tissue-scale deformations of the whole embryo. The three-dimensional mechanical balance is dependent on the geometry of the embryo, whose curved surface is taken into account in the simulations. Importantly, we find that to reproduce experimental flows, the model requires the presence of the cephalic furrow, a fold located anteriorly of the extending tissues. The presence of this geometric feature, through the global mechanical balance, guides the flow and orients extension towards the posterior end.All the computations presented in this paper were performed using the Cactus platform of the CIMENT infrastructure (https://ciment.ujf-grenoble.fr), which is supported by Région Rhône-Alpes (GRANT CPER07-13, http://en.rhonealpes.fr/370-the-quality-of-the-research.htm). MD, PS and JE thank Région Rhône-Alpes (CIBLE and IXXI, all authors; CMIRA, JE only), MD thanks Malian government and French embassy in Bamako "Bourse d’Excellences" programme, LIPHY and LJK (CNRS and Univ. Grenoble Alpes) for financial support. MD and JE thank ANR-12-BS09-0020-01 "Transmig" and ANR-11-LABX-0030 "Tec21", and are members of GDR 3570 MecaBio and GDR 3070 CellTiss of CNRS. JE thanks the Isaac Newton Institute for Mathematical Sciences for its hospitality during the programme "Coupling Geometric PDEs with Physics for Cell Morphology, Motility and Pattern Formation" supported by EPSRC Grant Number EP/K032208/1. CML, GBB and BS were supported by Wellcome Trust Investigator Award 099234/Z/12/Z to BS

30 days wild: development and evaluation of a large-scale nature engagement campaign to improve well-being

There is a need to increase people’s engagement with and connection to nature, both for human well-being and the conservation of nature itself. In order to suggest ways for people to engage with nature and create a wider social context to normalise nature engagement, The Wildlife Trusts developed a mass engagement campaign, 30 Days Wild. The campaign asked people to engage with nature every day for a month. 12,400 people signed up for 30 Days Wild via an online sign-up with an estimated 18,500 taking part overall, resulting in an estimated 300,000 engagements with nature by participants. Samples of those taking part were found to have sustained increases in happiness, health, connection to nature and pro-nature behaviours. With the improvement in health being predicted by the improvement in happiness, this relationship was mediated by the change in connection to nature