944 research outputs found

    Contraception utilization among women, ages 18-45, receiving medication assisted therapy for opioid use disorder in middle Tennessee

    Get PDF
    The prevalence of unintended pregnancy among women receiving medication assisted treatment (MAT) for opioid use disorder (OUD) exceeds 80%. While much of the existing literature has focused on the consequences of substance use in pregnancy, few have focused on the prevention of unintended pregnancy. This study explored barriers and facilitating factors impacting contraception use among women, ages 18-45, receiving MAT for OUD in Middle Tennessee. A cross-sectional survey design was used to describe the women’s sociodemographic and health characteristics; report their knowledge, attitudes, and behaviors; and to assess if these variables are associated with current use of contraception. Among survey respondents (N=262; response rate of 98%), most women were publicly insured (92%), sexually active in the past year (88.2%), pregnant at least once in their lifetime (97%), and most had experienced at least one unintended pregnancy (83.6%). Although 60.7% agreed it was important to avoid pregnancy, all contraception groups had low levels of contraception knowledge. Consistent voluntary use of reliable contraception, like long-acting reversible contraception (LARC), can reduce the risk of unintended pregnancy among women with OUD. Improvement strategies are warranted to ensure women enrolled in MAT for OUD have access to reliable contraception methods and noncoercive contraceptive counseling to curb the rising rates of unintended pregnancy and reduce rates of neonatal abstinence syndrome (NAS). Integrating reproductive health services into MAT programs may support the woman’s commitment to sustained recovery by promoting continuity of care and reproductive autonomy while being cognizant of historical trauma and current disparities. Keywords: contraception, opioid use disorder, substance use disorder, and addiction

    Neutrino oscillation probabilities through the looking glass

    Full text link
    In this paper we review different expansions for neutrino oscillation probabilities in matter in the context of long-baseline neutrino experiments. We examine the accuracy and computational efficiency of different exact and approximate expressions. We find that many of the expressions used in the literature are not precise enough for the next generation of long-baseline experiments, but several of them are while maintaining comparable simplicity. The results of this paper can be used as guidance to both phenomenologists and experimentalists when implementing the various oscillation expressions into their analysis tools.Comment: 32 pages, 6 figure

    Comment on "Fano Resonance for Anderson Impurity Systems"

    Full text link
    In a recent Letter, Luo et al. (Phys. Rev. Lett. 92, 256602 (2004)) analyze the Fano line shapes obtained from scanning tunneling spectroscopy (STS) of transition metal impurities on a simple metal surface, in particular of the Ti/Au(111) and Ti/Ag(100) systems. As the key point of their analysis, they claim that there is not only a Fano interference effect between the impurity d-orbital and the conduction electron continuum, as derived in Ujsaghy et al. (Phys. Rev. Lett. 85, 2557 (2000)), but that the Kondo resonance in the d-electron spectral density has by itself a second Fano line shape, leading to the experimentally observed spectra. In the present note we point out that this analysis is conceptually incorrect. Therefore, the quantitative agreement of the fitted theoretical spectra with the experimental results is meaningless.Comment: 1 page, no figures. Accepted for publication in PRL; revised version uploaded on November 18th, 200

    Uma aplicação do SOC na estimação por intervalo do parametro razĂŁo de produtos cruzados em tabelas de contingĂȘncia 2 x 2.

    Get PDF
    Neste sentido, foi desenvolvido o programa TAB2x2.ENT utilizando os recursos do módulo CM do SOC - Fevereiro/88, o qual fornece, para dados não pareados dispostos em uma tabela 2x2, as estimativas pontuais do parùmetro razão de produtos cruzados, os limites dos intervalos assintåticos de Cornfield (1956) , Ccx (1958) , Wolf (1954) com correção de continuidade e Gart (1962) , comprimento dos intervalos e, para os métodos assintåticos condicionais, os níveis de significùncia exatos unicaudais e os coeficientes de confiança exatos.bitstream/item/76611/1/CNPTIA-COM.TEC.-8803-88.pd

    Control of the apple sawfly Hoplocampa testudinea Klug in organic fruit growing and possible side effects of control strategies on Aphelinus mali Haldeman and other beneficial insects

    Get PDF
    The effect of Quassia extract on eggs and larvae of the apple sawfly Hoplocampa testudinea was studied. The efficacy of this extract is mainly due to an oral toxicity to the neonate sawfly larvae. The main active ingredients, Quassin and Neoquassin, were tested separately. Wheras Quassin has a considerable efficacy also on older larvae, Neoquassin is less efficient in this case. While Quassin and Neoquassin are found in different Quassia sources in varying relations to each other and have different efficacy, they have to be considered separately in the definition of extract quality by the content of active ingredients. These findings mean, that the “egg maturity” is not important for application date. Nevertheless, the application must take place before the larvae hatch. It was shown that low rates of Quassin (4-6 g/ha) can show very good results in the field, in other cases the rates necessary for good efficacy are much higher. This corresponds to farmers experience. Several factors as application technique and the condition of the blossom must be taken in consideration and will be object of further studies. The side effects of Quassin, Neoquassin and Quassia extract on Aphelinus mali and other beneficial arthropods were tested. Quassia is harmless to all organisms tested

    Status of neutrino oscillations 2018: first hint for normal mass ordering and improved CP sensitivity

    Full text link
    We present a new global fit of neutrino oscillation parameters within the simplest three-neutrino picture, including new data which appeared since our previous analysis~\cite{Forero:2014bxa}. In this update we include new long-baseline neutrino data involving the antineutrino channel in T2K, as well as new data in the neutrino channel, data from NOÎœ\nuA, as well as new reactor data, such as the Daya Bay 1230 days electron antineutrino disappearance spectrum data and the 1500 live days prompt spectrum from RENO, as well as new Double Chooz data. We also include atmospheric neutrino data from the IceCube DeepCore and ANTARES neutrino telescopes and from Super-Kamiokande. Finally, we also update our solar oscillation analysis by including the 2055-day day/night spectrum from the fourth phase of the Super-Kamiokande experiment. With the new data we find a preference for the atmospheric angle in the upper octant for both neutrino mass orderings, with maximal mixing allowed at Δχ2=1.6 (3.2)\Delta\chi^2 = 1.6 \, (3.2) for normal (inverted) ordering. We also obtain a strong preference for values of the CP phase ÎŽ\delta in the range [π,2π][\pi,2\pi], excluding values close to π/2\pi/2 at more than 4σ\sigma. More remarkably, our global analysis shows for the first time hints in favour of the normal mass ordering over the inverted one at more than 3σ\sigma. We discuss in detail the origin of the mass ordering, CP violation and octant sensitivities, analyzing the interplay among the different neutrino data samples.Comment: Updated neutrino oscillation analysis using the most recent results from T2K, NOÎœ\nuA, RENO and Super-Kamiokande. 17 pages, 8 figures, 1 tabl

    Creating pseudo Kondo-resonances by field-induced diffusion of atomic hydrogen

    Full text link
    In low temperature scanning tunneling microscopy (STM) experiments a cerium adatom on Ag(100) possesses two discrete states with significantly different apparent heights. These atomic switches also exhibit a Kondo-like feature in spectroscopy experiments. By extensive theoretical simulations we find that this behavior is due to diffusion of hydrogen from the surface onto the Ce adatom in the presence of the STM tip field. The cerium adatom possesses vibrational modes of very low energy (3-4meV) and very high efficiency (> 20%), which are due to the large changes of Ce-states in the presence of hydrogen. The atomic vibrations lead to a Kondo-like feature at very low bias voltages. We predict that the same low-frequency/high-efficiency modes can also be observed at lanthanum adatoms.Comment: five pages and four figure

    Towards a spatial decision support system for animal traceability.

    Get PDF
    This section presents the contributions of our work to the problems of bovine traceability and contact between animals using trajectory database concepts. This section describes how to delimitate problems and how to represent animal movements as trajectories. Afterwards, the algorithms for the identification of contacts between animals are presented for the calculation of contamination probabilities. In this work we define contamination algorithms for foot-and-mouth disease (FMD). FMD is a highly contagious disease that attacks all cleft-hoofed animals, mainly bovines. It occurs at all ages, regardless of sex, breed, climate, etc. The virus spreads by direct contact of animals as well as through the air, water and food.Contrato nÂș 43134

    Kondo effect near the Van Hove singularity in biased bilayer graphene

    Full text link
    Magnetic impurity adsorbed on one of the carbon planes of a bilayer graphene is studied. The formation of the many-body SU(2) and SU(4) resonances close to the bandgap is analyzed within the mean field Kotliar-Ruckenstein slave boson approach. Impact of enhanced hybridization and magnetic instability of bilayer doped near the Van Hove singularity on the screening of magnetic moment is discussed.Comment: 10 pages, 8 figure

    Visualizing the 'invisible'

    Get PDF
    The ability of scientists to image and manipulate matter at the (sub)atomic scale is a result of stunning advances in microscopy. Foremost amongst these was the invention of the scanning probe microscope, which, despite its classification as a microscope, does not rely on optics to generate images. Instead, images are produced via the interaction of an atomically sharp probe with a surface. Here the author considers to what extent those images represent an accurate picture of ‘reality’ at a size regime where quantum physics holds sway, and where the image data can be acquired and manipulated in a variety of ways
    • 

    corecore