Astrophysics from data analysis of spherical gravitational wave detectors

The direct detection of gravitational waves will provide valuable astrophysical information about many celestial objects. Also, it will be an important test to general relativity and other theories of gravitation. The gravitational wave detector SCHENBERG has recently undergone its first test run. It is expected to have its first scientific run soon. In this work the data analysis system of this spherical, resonant mass detector is tested through the simulation of the detection of gravitational waves generated during the inspiralling phase of a binary system. It is shown from the simulated data that it is not necessary to have all six transducers operational in order to determine the source's direction and the wave's amplitudes.Comment: 8 pages and 3 figure

Incorporation du coprah et des cuticules de cacao et d’arachide dans l’aliment du (tilapia du nil( (Oreohromis niloticus, linné, 1758) eleve en etang : Effet sur la croissance et la composition biochimique

Dans le but de réduire le coût de l’alimentation du tilapia en élevage, quatre aliments exogènes pulvérulents dont un industriel (Ivograin) servant de référence (AR) et trois tests locaux (A1, A2 et A3) formulés uniquement à base de sous-produits locaux ont été utilisés. La composition de base des aliments tests est : A1 (cuticules de de fève de cacao, son de maïs, tourteaux de soja et coton) ; A2 (cuticules de graine d’arachide, son de maïs, tourteaux de soja et coton) et A3 (tourteaux de coprah, soja et coton et son de maïs). Tous les aliments titrent environ 28 % de protéines. L’expérience est conduite à la ferme « Blondey » (Côte d’Ivoire) sur des juvéniles de Oreochromis niloticus d’un poids initial de 33,3 ± 0,4 g. Des juvéniles ne recevant pas d’aliment exogène ont servi de lot témoin (At) pour apprécier l’effet de l’aliment endogène. La densité de stockage était de 2 poissons/m2. Trois étangs par traitement ont été utilisés. La ration journalière a été distribuée à 9 h et à 15 h. Après 180 jours d’expérience, les poids moyens finaux ont atteint des valeurs respectives de 273,42 ± 26g ; 295,08 ± 18,5 g ; 352,1 ± 20,7g ; 309,38 ± 22,3 g et 101,06 ± 4 g pour A3, A2, A1, AR et At. Au niveau des aliments exogènes, le meilleur quotient nutritif (Qn= 2,22) et de croissance journalière (1,77 g/jour) ont été obtenus avec A1. Le plus grand Qn (2,88) et la plus faible croissance journalière (1,33g /jour) sont enregistrés avec A3. La comparaison de tous les lots indique que la plus faible croissance (0,38 g/jour) est enregistrée chez les poissons non nourris à l’aliment exogène (At). Les lipides corporels (16 - 17 %) sont plus élevés chez les poissons nourris aux aliments tests que ceux des lots de référence (14 %) et témoins (13 %). Par rapport à l’aliment AR, les aliments tests réduisent le coût de revient de l’aliment et le coût de l’alimentation par unité de prise de poids de 15 - 18 % et 3,1 - 27,4 %, respectivement.Mots clés : Aliments, arachide, cacao, coprah, cuticules, Oreochromis niloticusEnglish AbstractIncorporation of coconut oil cake, cocoa bean shell and peanut skin in diet for nile tilapia (Oreohromis niloticus, linné, 1758) reared in pond : Effect on growth and biochemical compositionIn order to reduce feeding cost of rearing tilapia, four powdered diets including an industrial product (Ivograin) (as reference = AR) and three practical diets (A1, A2 and A3) formulated using local by-products were used. Formulated diets were designated as A1 (cocoa bean shell, corn bran, soybean oil cake, cottonseeds oil cake, premix), A2 (peanut skin, corn bran, soybean oil cake, cottonseeds oil cake, premix) and A3 (corn bran, soybean oil cake, cottonseeds oil cake and coconut oil cake). The four diets contained approximately 28 % crude protein. The experiment was carried out at farm « Blondey » (Ivory Coast) on fingerlings Oreochromis niloticus with an initial body weight of 33.3 ± 0.4g. In addition, fingerlings non-fed with exogenous diet were used as control group to assess the impact of the natural food. The used stocking density was 2 fish/m2. Three replicate ponds were assigned to each of the treatment. Fish were fed twice daily (9.00 h and 15.00 h). After 180 days of experiment, the final body weight observed were respectively 273.42 ± 26 ; 295.08 ± 18.5 ; 352.1 ± 20,7 ; 309.38 ± 22.3 g and 101.06 ± 4 g for A3, A2, A1, AR and At. Considering the four diets (A1, A2, A3 and AR), the best daily weight gain (1.77 g/day) and feed conversion ratio (2.22) were obtained with A1 which were significantly different (p < 0.05) from values obtained for the other groups. The poorest weight gain (1.33 g/day) and the highest feed conversion ratio (2.88) were recorded for A3. The comparison of all groups (A1, A2, A3, AR and At) revealed that the poorest value of the daily weight gain (1.33 g/day) was recorded for the control group (At). Fat deposition was highest (16 - 17 %) in fish fed practical diets, while fish fed diets AR and control fish (At) recorded respectively (14 %) and (13 %). Practical diets reduced the feed cost and feeding cost per unit of weight gain by 15 - 18 % and 3.1 - 27.4 %, respectively.Keywords : Diets, peanut skin, cocoa bean shell, coconut oil cake, Oreochromis niloticu

Fontes De Obtenção De Medicamentos Para Hipertensão E Diabetes No Brasil: Resultados De Inquérito Telefônico Nas Capitais Brasileiras E No Distrito Federal, 2011

This study aimed to analyze differences between patients with diabetes and hypertension in drug treatment and their sources for obtaining medication. This was a cross-sectional study with data from the VIGITEL telephone survey in 2011 in Brazil’s state capitals and Federal District. Some 72% of the 15,027 hypertensive patients and 78.2% of the 4,083 diabetics were on medication; 45.8% of the hypertensive patients obtained their medications from public health units, 15.9% from the Popular Pharmacy program, and 38.3% from drugstores, pharmacies, and other sources. The rates among diabetics were 54.4%, 16.2%, and 29.4%, respectively. In the public health units the percentages were highest among individuals with less schooling, black or brown skin, and without private health plans, while the percentages in the Popular Pharmacy program and drugstores/pharmacies and other sources were higher among individuals with more schooling, white skin, and private health plans. Access to different sources of medicines showed disparities between Brazil’s regions and state capitals and between social segments of the population. © 2016, Fundacao Oswaldo Cruz. All rights reserved.32

Light GUT Triplets and Yukawa Splitting

Triplet-mediated proton decay in Grand Unified Theories (GUTs) is usually suppressed by arranging a large triplet mass. Here we explore instead a mechanism for suppressing the couplings of the triplets to the first and second generations compared to the Yukawa couplings, so that the triplets' mass can be below the GUT scale. This mechanism is based on a ``triplet symmetry'' in the context of product-group GUTs. We study two possibilities. One, which requires the top Yukawa to arise from a non-renormalizable operator at the GUT scale, is that all triplet couplings to matter are negligible, so that the triplets can be at the weak scale. The second is that some triplet couplings, and in particular $T t b$ and $T \bar{t} \bar{l}$, are equal to the corresponding Yukawa couplings. This would give a distinct signature of grand unification if the triplets were sufficiently light. However, we derive a model-independent bound on the triplet mass in this case, which is at least 10$^6$GeV. Finally, we construct a GUT model based on Yukawa splitting, with the triplets at 10$^{14}$GeV, as required for coupling unification to work.Comment: 5 pages, Revtex4, 1 EPS figure. To appear in PRD: Minor changes. Appendix droppe

Nonextensive Entropies derived from Form Invariance of Pseudoadditivity

The form invariance of pseudoadditivity is shown to determine the structure of nonextensive entropies. Nonextensive entropy is defined as the appropriate expectation value of nonextensive information content, similar to the definition of Shannon entropy. Information content in a nonextensive system is obtained uniquely from generalized axioms by replacing the usual additivity with pseudoadditivity. The satisfaction of the form invariance of the pseudoadditivity of nonextensive entropy and its information content is found to require the normalization of nonextensive entropies. The proposed principle requires the same normalization as that derived in [A.K. Rajagopal and S. Abe, Phys. Rev. Lett. {\bf 83}, 1711 (1999)], but is simpler and establishes a basis for the systematic definition of various entropies in nonextensive systems.Comment: 16 pages, accepted for publication in Physical Review

Bianchi type II models in the presence of perfect fluid and anisotropic dark energy

Spatially homogeneous but totally anisotropic and non-flat Bianchi type II cosmological model has been studied in general relativity in the presence of two minimally interacting fluids; a perfect fluid as the matter fluid and a hypothetical anisotropic fluid as the dark energy fluid. The Einstein's field equations have been solved by applying two kinematical ans\"{a}tze: we have assumed the variation law for the mean Hubble parameter that yields a constant value of deceleration parameter, and one of the components of the shear tensor has been considered proportional to the mean Hubble parameter. We have particularly dwelled on the accelerating models with non-divergent expansion anisotropy as the Universe evolves. Yielding anisotropic pressure, the fluid we consider in the context of dark energy, can produce results that can be produced in the presence of isotropic fluid in accordance with the \Lambda CDM cosmology. However, the derived model gives additional opportunities by being able to allow kinematics that cannot be produced in the presence of fluids that yield only isotropic pressure. We have obtained well behaving cases where the anisotropy of the expansion and the anisotropy of the fluid converge to finite values (include zero) in the late Universe. We have also showed that although the metric we consider is totally anisotropic, the anisotropy of the dark energy is constrained to be axially symmetric, as long as the overall energy momentum tensor possesses zero shear stress.Comment: 15 pages; 5 figures; matches the version published in The European Physical Journal Plu

Comments On “the Organization Of Pharmaceutical Services By ‘health Region’ In Brazil’s Unified Health System”

This study aimed to describe and characterize the pharmaceutical services provided in Brazil’s Unified Health System (SUS) from the point of view of the healthcare networks that are organized by region in the QualiSUS-Rede Project. This was a cross-sectional study, with data collected from December 2013 to July 2015, in public health establishments that carried out delivery or warehousing of medications (n = 4,938), in 465 municipalites, and the Federal District, in 43‘Health Regions’. The results show the existence of at least one management service supporting the health network, and warehousing of medications in all the regions (> 90%). It also showed the availability of at least one healthcare service, in healthcare locations, by pharmaceutical professionals is irregular between the Regions, being highest in the Southeastern Region (74.3%), and lowest in the Northeastern Region (43.3%). The results underpine the need for effective structuring of pharmaceutical assistance in the SUS networks, overcoming the current restrictive vision of its activities, which gives value almost exclusively to the logistical component of support to the network, to the detriment of the clinical component. It is also important to expand, and improve the quality of, the population’s access to medical drugs, and improve the quality of the healthcare offered to users of the system. © 2017, Associacao Brasileira de Pos - Graduacao em Saude Coletiva. All rights reserved.2241181119

Family Unification on an Orbifold

We construct a family-unified model on a Z_2xZ_2 orbifold in five dimensions. The model is based on a supersymmetric SU(7) gauge theory. The gauge group is broken by orbifold boundary conditions to a product of grand unified SU(5) and SU(2)xU(1) flavor symmetry. The structure of Yukawa matrices is generated by an interplay between spontaneous breaking of flavor symmetry and geometric factors arising due to field localization in the extra dimension.Comment: 13 page

Some anisotropic universes in the presence of imperfect fluid coupling with spatial curvature

We consider Bianchi VI spacetime, which also can be reduced to Bianchi types VI0-V-III-I. We initially consider the most general form of the energy-momentum tensor which yields anisotropic stress and heat flow. We then derive an energy-momentum tensor that couples with the spatial curvature in a way so as to cancel out the terms that arise due to the spatial curvature in the evolution equations of the Einstein field equations. We obtain exact solutions for the universes indefinetly expanding with constant mean deceleration parameter. The solutions are beriefly discussed for each Bianchi type. The dynamics of the models and fluid are examined briefly, and the models that can approach to isotropy are determined. We conclude that even if the observed universe is almost isotropic, this does not necessarily imply the isotropy of the fluid (e.g., dark energy) affecting the evolution of the universe within the context of general relativity.Comment: 17 pages, no figures; to appear in International Journal of Theoretical Physics; in this version (which is more concise) an equation added, some references updated and adde

Polyphenols journey through blood-brain barrier towards neuronal protection

Age-related complications such as neurodegenerative disorders are increasing and remain cureless. The possibility of altering the progression or the development of these multifactorial diseases through diet is an emerging and attractive approach with increasing experimental support. We examined the potential of known bioavailable phenolic sulfates, arising from colonic metabolism of berries, to infuence hallmarks of neurodegenerative processes. In silico predictions and in vitro transport studies across blood-brain barrier (BBB) endothelial cells, at circulating concentrations, provided evidence for diferential transport, likely related to chemical structure. Moreover, endothelial metabolism of these phenolic sulfates produced a plethora of novel chemical entities with further potential bioactivies. Pre-conditioning with phenolic sulfates improved cellular responses to oxidative, excitotoxicity and infammatory injuries and this attenuation of neuroinfammation was achieved via modulation of NF-κB pathway. Our results support the hypothesis that these small molecules, derived from dietary (poly)phenols may cross the BBB, reach brain cells, modulate microglia-mediated infammation and exert neuroprotective efects, with potential for alleviation of neurodegenerative diseases.info:eu-repo/semantics/publishedVersio