Floristic and Environmental Characteristics of Sub-boreal Peatlands of Minnesota and Western Wisconsin

Peatland communities in the sub-boreal region of Minnesota and western Wisconsin were characterized by floristic composition, structure and environmental characteristics to determine the natural variation among peatland communities in the region and their shared associations with the boreal and temperate peatlands of North America. Floristic classification revealed five, distinct peatland community types, identified as Sphagnum Bogs, Herbaceous Fens, Forested Fens, Rich/Calcareous Fens and Phalaris anrundinacea dominated peatlands. Differences among sub-boreal peatlands largely reflected changes in the significant indicator and dominant plant species identified, which were found to exhibit high fidelities to a particular peatland community type. Floristic variations among sub-boreal peatlands were observed to correlate with changes in pore-water chemistry along a strong pH-alkalinity gradient. Ordinal analysis by non-metric multidimensional scaling also indicated a strong community association with soil and pore-water chemistry, which primarily reflected the geomorphic and hydrologic settings in which communities developed and the transitional nature of the region. In addition, the broad physiological tolerance and invasive nature of P. anrundinacea was found to pose a substantial threat to the biodiversity and ecological functioning of sub-boreal peatland communities

Comment on the Calculation of the Angular Momentum and Mass for the (Anti-) Self Dual Charged Spinning BTZBTZ Black Hole

A recent paper [M. Kamata and T. Koikawa, Phys. Lett. {\bf B353} (1995) 196.] claimed to obtain the charged version of the $(2+1)$-dimensional spinning $BTZ$ black hole solution by assuming a (anti-) self dual condition imposed on the electric and magnetic fields. We point out that the angular momentum and mass diverge at spatial infinity and as a consequence the solution is unphysicalComment: 4 pages, Latex, no figures, final version to be publised in Phys. Lett.

An Arduino compatible CAN Bus architecture for sailing applications

International audienceThis paper describes a Controller Area Network (CAN) Bus architecture based on Arduino compatible boards, to be used as an alternative communication system for robotic applications. This combines both, the robustness of CAN and the accessibility of Arduino software. The architecture is developed here to improve a Navigational Assistance System, which was initially created for disabled people. The system is composed of Arduino compatible boards, wired with various sensors and actuators, and communicating with an Human Machine Interface (HMI), directly accessible via a mobile phone or a tablet running on the open-source operating system Android. Information is transferred through the CAN bus architecture between multiple nodes (i.e. Arduino compatible boards) and the implementation of a CAN bootloader allows the reconfiguration of the nodes directly through the bus. The aim is to create a generic system able to work in various kinds of situations, adaptable to all kinds of users, including persons with all sorts of disabilities. This work will result in a demonstrator on a Miniji for the WRSC 2013 and an entirely joystick controlled boat for single handed sailing

The disabled set sail

International audienceSailing is not an activity that can easily be done with a handicap. Sailors typically need mobility to steer a boat. An Arduino-compatible CAN architecture for sailing applications is set to change that

Metabolomic profiling of macrophages determines the discrete metabolomic signature and metabolomic interactome triggered by polarising immune stimuli

Priming and activating immune stimuli have profound effects on macrophages, however, studies generally evaluate stimuli in isolation rather than in combination. In this study we have investigated the effects of pro-inflammatory and anti-inflammatory stimuli either alone or in combination on macrophage metabolism. These stimuli include host factors such as IFNγ and ovalbumin-immunoglobulin immune complexes, or pathogen factors such as LPS. Untargeted LC-MS based metabolomics provided an in-depth profile of the macrophage metabolome, and revealed specific changes in metabolite abundance upon either individual stimuli or combined stimuli. Here, by factoring in an interaction term in the linear model, we define the metabolome interactome. This approach allowed us to determine whether stimuli interact in a synergistic or antagonistic manner. In conclusion this study demonstrates a robust approach to interrogate immune-metabolism, especially systems that model host-pathogen interactions

Prevalence, Trends and Predictors of Small Size Babies in Nigeria: Analysis of Data from Two Recent Nigeria Demographic and Health Surveys

Background: Despite low birth weight (LBW) role on child growth, development, and survival in developing countries, it has not been given the desired priority in terms of research, at the national level in Nigeria. Our study aims to estimate the trend in the prevalence of small size babies and to identify its predictors using nationally representative data. Methods: We used the 2013 and 2018 data from the Nigeria Demographic and Health Survey using the statistical methods of descriptive analysis and logistic regression modelling. Results: The proportion of babies reported to have small size at birth in Nigeria declined from 14.9% in 2013 to 13.7% in 2018. Various factors from demographic, socio-economic, and health-seeking behaviour were identified as significant predictors. Women who received iron pills and tetanus toxoids during pregnancy had at most 79% and 80% less risk of having small size babies, respectively, than those who received none of these two. Female children had at least 21% more chance of being small in size than male children. Other key predictors were geopolitical region, maternal age at child birth, maternal literacy level, wealth status, religion, source of water supply, number of ANC visits during pregnancy, and desirousness of pregnancy. Conclusion: In light of the adverse effects of low birth weight on child well-being, we recommend the implementation and prioritization of active, resourceful public health interventions that account for the findings of this study, if Nigeria is to sustain the progress achieved so far in reducing its current high rate

Système d'assistance à la navigation handivoile

International audienceCe projet, fruit d'une collaboration entre l'ENSTA-Bretagne et l'entreprise Splashelec vise à développer une Interface Homme-Machine (IHM) qui facilite la navigation par le biais de capteurs et d'un boîtier de commandes embarqué sur le bateau. Il se concrétise par la création d'une interface graphique directement accessible via un téléphone mobile pour pallier le manque de mobilité du navigateur

Perspectives of stakeholders of the free maternity services for mothers in western Kenya: lessons for universal health coverage

Background: The strategic aim of universal health coverage (UHC) is to ensure that everyone can use health services they need without risk of financial hardship. Linda Mama (Taking care of the mother) initiative focuses on the most vulnerable women, newborns and infants in offering free health services. Financial risk protection is one element in the package of measures that provides overall social protection, as well as protection against severe financial difficulties in the event of pregnancy, childbirth, neonatal and perinatal health care for mothers and their children. Purpose: The aim of this study was to find out the extent of awareness, and involvement among managers, service providers and consumers of Linda mama supported services and benefits of the initiative from the perspectives of consumers, providers and managers. Methods: We carried out cross sectional study in four sub counties in western Kenya: Rachuonyo East, Nyando, Nyakach, and Alego Usonga. We used qualitative techniques to collect data from purposively selected Linda Mama project implementors, managers, service providers and service consumers. We used key informant interview guides to collect data from a total of thirty six managers, nine from each Sub -County and focus group discussion tools to collect data from sixteen groups of service consumers attending either antenatal or post-natal clinics, four from each sub county, selecting two groups from antenatal and two from postnatal clinics in each sub county. Data analysis was based on thematic content analysis. Findings: Managers and service providers were well aware of the initiative and were involved in it. Participation in Linda Mama, either in providing or using, seemed to be more prominent among managers and service providers. Routine household visits by community health volunteers to sensitize mothers and community engagement was core to the initiative. The managers and providers of services displayed profound awareness of how requiring identification cards and telephone numbers had the potential to undermine equity by excluding those in greater need of care such as under-age pregnant adolescents. Maternity and mother child health services improved as a result of the funds received by health facilities. Linda Mama reimbursements helped to purchase drug and reduced workload in the facility by hiring extra hands. Conclusion: The initiative seems to have influenced attitudes on health facility delivery through: Partnership among key stakeholders and highlighting the need for enhanced partnership with the communities. It enhanced the capacity of health facilities to deliver high quality comprehensive, essential care package and easing economic burden

Spinning Black Holes in (2+1)-dimensional String and Dilaton Gravity

We present a new class of spinning black hole solutions in $(2+1)$-dimensional general relativity minimally coupled to a dilaton with potential $e^{b\phi}\Lambda$. When $b=4$, the corresponding spinning black hole is a solution of low energy $(2+1)$-dimensional string gravity. Apart from the limiting case of the $BTZ$ black hole, these spinning black holes have no inner horizon and a curvature singularity only at the origin. We compute the mass and angular momentum parameters of the solutions at spatial infinity, as well as their temperature and entropy.Comment: 8 pages, Latex, statements about mass of 2+1 Hirschmann and Welch magnetic solution corrected, in press in Phys. Lett.