467 research outputs found

    Faktor-Faktor Yang Berhubungan Dengan Kejadian Intra Uterine Fetal Death (IUFD)

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    Latar Belakang : Intra Uterine Fetal Death (IUFD) atau kematian janin dalam rahim adalah janin yang mati dalam rahim dengan berat badan 500 gram atau lebih atau kematian janin dalam rahim pada umur kehamilan 20 minggu atau lebih. IUFD merupakan salah satu penyebab kematian perinatal.Tujuan : Penelitian ini adalah untuk mengetahui faktor-faktor yang berhubungan dengan kejadian IUFD di RSUP Prof. Dr. R. D. Kandou Manado.Metode Penelitian : Penelitian ini menggunakan metode penelitian deskriptif analitik dengan pendekatan cross sectional. Jumlah sampel 226 orang terbagi atas kasus IUFD 113 orang dan kontrol (tidak IUFD) 113 orang. Instrument penelitian yang digunakan adalah check list. Analisis data menggunakan uji Chi-square.Hasil Penelitian : Hasil analisis uji Chi-square terhadap hubungan umur ibu dengan kejadian IUFD didapatkan nilai ρ value = 0,594 (ρ > 0,05) artinya tidak terdapat hubungan yang signifikan antara umur ibu dengan kejadian IUFD, umur kehamilan dengan kejadian IUFD didapatkan nilai ρ value = 1,000 (ρ > 0,05) artinya tidak terdapat hubungan yang signifikan antara umur kehamilan dengan kejadian IUFD. Sedangkan hasil analisis uji Chi-square terhadap hubungan kadar Hb dengan kejadian IUFD didapatkan nilai ρ value = 0,010 (ρ < 0,05) artinya terdapat hubungan yang signifikan antara kadar Hb dengan kejadian IUFD.Kesimpulan : Tidak ada hubungan antara umur ibu dan umur kehamilan dengan kejadian IUFD, dan ada hubungan antara kadar Hb dengan kejadia

    Neutrino magnetohydrodynamics

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    A new neutrino magnetohydrodynamics (NMHD) model is formulated, where the effects of the charged weak current on the electron-ion magnetohydrodynamic fluid are taken into account. The model incorporates in a systematic way the role of the Fermi neutrino weak force in magnetized plasmas. A fast neutrino-driven short wavelengths instability associated with the magnetosonic wave is derived. Such an instability should play a central role in strongly magnetized plasma as occurs in supernovae, where dense neutrino beams also exist. In addition, in the case of nonlinear or high frequency waves, the neutrino coupling is shown to be responsible for breaking the frozen-in magnetic field lines condition even in infinite conductivity plasmas. Simplified and ideal NMHD assumptions were adopted and analyzed in detail

    Traffic Vertical Signposting: Materials Characterization and Structural Numerical Simulation

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    Aknowlegements: This work was supported by the project POCI-01-0247-FEDER-010797from the Agency for Competitiveness and Innovation (IAPMEI). In addition, the authors acknowledge the funding from the project UID/Multi/04044/2013 of the Portuguese Foundation for Science and Technology (FCT) and PAMI - ROTEIRO/0328/2013 (Nº 022158).The existing metallic solutions used for vertical traffic signs are associated with higher costs and environmental issues due to their manufacturing and degradation, when compared with polymeric solutions. Thus, the development of vertical signs considering the injection from polymeric materials in order to overcome problems related with sustainability, maintenance costs, and to achieve higher resistance to corrosion assumes nowadays an important role. The use of ecofriendly and innovative products considering the industrial waste combined with synthetic polymers performing the appropriate mechanical properties, can also be studied to find out new solutions that allow to solve the aforementioned problems. Additionally, these innovative vertical signs can contribute to avoid vandalism events related with theft and graffiti activities. This work presents the prior materials investigation and the structural design of vertical signs that are intended to be produced through polymer injection. Three main steps were considered: i) materials research, ii) materials characterisation through the analysis of polycarbonate resin isolated and in different sets of mixtures with different concentrations through tensile testing and static water contact angle measurements to find the optimal material composition; and iii) structural numerical simulation considering polycarbonate resin and using the current standard EN 12899-1 [1] to compute wind resistance, temporary and permanent deflections. Both experimental and numerical results led to an optimized proposal of the vertical signposting structural design.info:eu-repo/semantics/publishedVersio

    Temperature inversion symmetry in the Casimir effect with an antiperiodic boundary condition

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    We present explicitly another example of a temperature inversion symmetry in the Casimir effect for a nonsymmetric boundary condition. We also give an interpretation for our result.Comment: 4 page

    Bilateral versus ipsilesional cortico-subcortical activity patterns in stroke show hemispheric dependence

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    Background Understanding of interhemispheric interactions in stroke patients during motor control is an important clinical neuroscience quest that may provide important clues for neurorehabilitation. In stroke patients, bilateral overactivation in both hemispheres has been interpreted as a poor prognostic indicator of functional recovery. In contrast, ipsilesional patterns have been linked with better motor outcomes. Aim We investigated the pathophysiology of hemispheric interactions during limb movement without and with contralateral restraint, to mimic the effects of constraint-induced movement therapy. We used neuroimaging to probe brain activity with such a movement-dependent interhemispheric modulation paradigm. Methods We used an fMRI block design during which the plegic/paretic upper limb was recruited/mobilized to perform unilateral arm elevation, as a function of presence versus absence of contralateral limb restriction ( n = 20, with balanced left/right lesion sites). Results Analysis of 10 right-hemispheric stroke participants yielded bilateral sensorimotor cortex activation in all movement phases in contrast with the unilateral dominance seen in the 10 left-hemispheric stroke participants. Superimposition of contralateral restriction led to a prominent shift from activation to deactivation response patterns, in particular in cortical and basal ganglia motor areas in right-hemispheric stroke. Left-hemispheric stroke was in general characterized by reduced activation patterns, even in the absence of restriction, which induced additional cortical silencing. Conclusion The observed hemispheric-dependent activation/deactivation shifts are novel and these pathophysiological observations suggest short-term neuroplasticity that may be useful for hemisphere-tailored neurorehabilitation.info:eu-repo/semantics/publishedVersio

    Normalized coprime factorizations for linear time-varying systems

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    In this paper we show that a finite dimensional linear time-varying continuous-time system admits normalized coprime factorizations if and only if it admits a stabilizable and detectable realization. We construct state-space formulas for these factorizations using the stabilizing solutions to standard Riccati differential equations. In the process, we give a simple proof that stabilizability and detectability are sufficient to ensure the existence of such solutions. Based on these results, and on recent advances in the theory of [infinity] optimization, we present an algorithm to compute the distance between two systems in the gap metric.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/30015/1/0000383.pd

    Patógenos associados a doenças de plantas ornamentais na região metropolitana de Salvador, Bahia.

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    O mercado de flores e plantas ornamentais está se expandido na Bahia, sendo grande a diversidade de espécies cultivadas. Pode-se considerar que, atualmente, a produção de flores e plantas ornamentais é uma importante alternativa de trabalho e renda para as mais diversas classes da população baiana.PDF. 157_11
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