EFFECT OF ACTIVE VS. PASSIVE END-RANGE DETERMINATION ON SHOULDER AXIAL ROTATION IN THROWER ATHLETES

The effect of active or passive end-range determination on shoulder axial rotation is unclear on overhead-throwing athletes. Twenty-two healthy males were equally divided into athletes and non-athletes groups and their throwing arm was tested during internal and external arm rotation and on active and passive end-range determination conditions. The humeral and scapular 3D position were recorded at the shoulder rotational endrange and compared across groups using two-way repeated-measures ANOVA. No differences were found between groups for all humeral and scapular variables. The active internal Thoracohumeral (TH) and Glenohumeral (GH) arches were significantly (p=0.00) higher than internal passive TH and GH. At the end-range of external rotation athletes showed a scapula less in protraction (p=0.027) and less in scapular posterior tilt (p=0.00). External passive TH and GH were significantly higher than external active TH and GH

Estimative for the size of the compactification radius of a one extra dimension Universe

In this work, we use the Casimir effect to probe the existence of one extra dimension. We begin by evaluating the Casimir pressure between two plates in a $M^4\times S^1$ manifold, and then use an appropriate statistical analysis in order to compare the theoretical expression with a recent experimental data and set bounds for the compactification radius

Plant / Controller Optimization with applications to Integrated Surface Sizing and Feedback Controller Design for Autonomous Underwater Vehicles (AUVs)

This paper describes a solution to the following plant controller optimization (PCO) problem: given an autonomous underwater vehicle (AUV) - with a fixed baseline body configuration - that is required to operate over a finite number of representative trimming conditions in the vertical plane, determine the optimal size of the bow and stern control surfaces so that a weighted average J of the power required at trimming is minimized, subject to the conditions that: i) a given set of open loop requirements are met, and ii) stabilizing feedback controllers can be designed to meet desired time and frequency closed loop performance requirements about each trimming point. The solution proposed is rooted in the theory of Linear Matrix Inequalities (LMIs) and leads to efficient PCO algorithms that build on a recently released LMI Toolbox.The work of C. Silvestre and A. Pascoal was partially supported by the Portuguese PRAXIS XXI Programme under the INFANTE project. The work of the first author was also supported by NATO Scholarship 17/A/94/PO The second author benefited from a NATO Fellowship during his 1996-98 sabbatical at the Naval Postgraduate School

Mobile pervasive augmented reality systems the role of user preferences in perceived quality of experience

This work addresses reasons and aspects required to boost the acceptance and use of mobile pervasive augmented reality systems - MPARS - for outdoor applications and the need to develop context-aware close to- real-time feedback mechanisms that take into consideration a continuous measurement of Quality of Experience. For this purpose, we delve into how user preferences can be integrated in context-aware feedback systems, proposing a Quality of Experience theoretical model derived from an analysis on technology adoption models and user preferences. The how and why such model can be integrated into future solutions is also addressed.info:eu-repo/semantics/acceptedVersio

A survey of augmented reality: making technologies acceptable in outdoor environments

Augmented Reality (AR) is an increasingly prevalent subject with various areas of application. This work explores the results of a survey especially developed to document the ease of acceptance of possible characteristics to implement in mobile outdoor applications enhanced with AR. This survey has been devised for a better assessment of user preferences regarding the use of AR in outdoor scenarios. Preference level has been evaluated based on indicators from models concerning various existing and important models. The paper presents the survey results about the preference level in relation the targeted questions and proposes a conceptual framework for feedback on AR technology acceptance.info:eu-repo/semantics/acceptedVersio

Urethanes and polyurethanes from suberin 2: synthesis and characterization

Polyurethanes based on suberin from cork of Quercus suber L. and conventional isocyanate monomers were prepared and fully characterized in terms of both structure (FTIR and 1 H NMR spectroscopy) and thermal properties (differential scanning calorimetry and thermogravimetric analysis). Two fractions were systematically isolated, namely (i) methylene-chloride soluble products, which corresponded to linear and branched macromolecules and (ii) methylene-chloride insoluble products, representing the crosslinked material. The structures of these polymers were regular and no appreciable side reactions were detected. DSC analyses provided information about the glass transition temperature of both fractions and this parameter was correlated with the stiffness of the isocyanate used. The TGA of these polyurethanes showed that they started to degrade at about 175°C and that the residue at 400°C was around 50%. The highest amounts of insoluble fractions, as well as the highest Tgs, were reached when an initial [NCO]/[OH] of unity was used.info:eu-repo/semantics/publishedVersio

Neutrino magnetohydrodynamics

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

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

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

Cork suberin as a new source of chemicals.: 1. isolation and chemical characterization of its composition

Extractive-free cork from Quercus suber L. was submitted to a solvolysis treatment with methanolic NaOH which yielded 37% (o.d. cork) of suberin. This mixture of compounds was thoroughly characterized by FTIR, 1 H- and 13C-NMR, gas chromatogra phy coupled with mass spectrometric (GC–MS) analysis, vapour pressure osmometry (VPO), mass spectrography (MS) and gel permeation chromatography (GPC). After derivatization, the main components of the volatile fraction, representing less than half of the total, were found to be v-hydroxymonocarboxylates, a,v-dicarboxylates, simple alkanoates and 1-alkanols, all with chain lengths ranging from C16 to C24. A second fraction, with an average molecular weight about three times higher, was detected by VPO, MS and GPC. The presence of this important fraction in cork suberin had not been recognized in earlier studies. Both fractions constitute interesting precursors for the elaboration of new materials.info:eu-repo/semantics/publishedVersio

Testing the genomic overlap between intraspecific mating traits and interspecific mating barriers

Funding: BBSRC (grant number BB/S019669/1) and NERC (grant numbers NE/I027800/1, NE/L011255/1, NE/T014806/1 and NE/W001616/1).Differences in interspecific mating traits, such as male sexual signals and female preferences, often evolve quickly as initial barriers to gene flow between nascent lineages, and they may also strengthen such barriers during secondary contact via reinforcement. However, it is an open question whether loci contributing to intraspecific variation in sexual traits are co-opted during the formation and strengthening of mating barriers between species. To test this, we used a population genomics approach in natural populations of Australian cricket sister species that overlap in a contact zone: Teleogryllus oceanicus and Teleogryllus commodus. First, we identified loci associated with intraspecific variation in T. oceanicus mating signals: advertisement song and cuticular hydrocarbon (CHC) pheromones. We then separately identified candidate interspecific barrier loci between the species. Genes showing elevated allelic divergence between species were enriched for neurological functions, indicating potential behavioral rewiring. Only two CHC-associated genes overlapped with these interspecific candidate barrier loci, and intraspecific CHC loci showed signatures of being under strong selective constraints between species. In contrast, 10 intraspecific song-associated genes showed high genetic differentiation between T. commodus and T. oceanicus, and 2 had signals of high genomic divergence. The overall lack of shared loci in intra vs. interspecific comparisons of mating trait and candidate barrier loci is consistent with limited co-option of the genetic architecture of interspecific mating signals during the establishment and maintenance of reproductive isolation.Peer reviewe