Experimental comparison of kalman and complementary filter for attitude estimation

This paper presents an experimental comparison of the Kalman and complementary filter for attitude estimation of a microwave quadrotor, fusing measurements from inertial MEMs devices. Simulations on Kalman and complementary filters are performed to study how the parameters affect the estimations of each one. Finally, the experimental results are presented using real data, which are used for both noise parameter modelling and comparing the performance of the filters given different operating conditions of the experimental platform.Sociedad Argentina de Informática e Investigación Operativ

May Measurement Month 2017: analysis of the blood pressure screening results in Argentina-Americas

Hypertension is a growing concern worldwide, causing over 10 million deaths each year. The prevalence of high blood pressure (BP) in Argentina is 36.3% and 38% of these are unaware of their disease. Half of the hypertensive patients are on pharmacological treatment and only a quarter of them are controlled. The International Society of Hypertension initiated the May Measurement Month (MMM) as a global campaign to raise awareness on high BP that may also serve as a temporary solution to the lack of global screening programs worldwide. A volunteer cross-sectional survey was carried out in May 2017 across 56 health centres. Blood pressure measurement, definition of hypertension and statistical analysis followed the MMM protocol. For this awareness campaign, the Argentine Society of Hypertension coined the slogan: 'Know and control your blood pressure'. A total of 32 346 individuals aged at least 18 years were screened during MMM17. After imputation, 16 263 (50.4%) were hypertensive. Of the 12 156 receiving antihypertensive medication 5400 (44.4%) still had uncontrolled BP. MMM17, called in our country 'Know and control your blood pressure', was the largest BP screening campaign done in Argentina. Almost 6 out of 10 hypertensive patients were either not on treatment or were not controlled to the BP goal. These results suggest that appropriate screening can help to identify a significant number of people with high BP

Deep sequencing of the Mexican avocado transcriptome, an ancient angiosperm with a high content of fatty acids

Background: Avocado (Persea americana) is an economically important tropical fruit considered to be a good source of fatty acids. Despite its importance, the molecular and cellular characterization of biochemical and developmental processes in avocado is limited due to the lack of transcriptome and genomic information. Results: The transcriptomes of seeds, roots, stems, leaves, aerial buds and flowers were determined using different sequencing platforms. Additionally, the transcriptomes of three different stages of fruit ripening (pre-climacteric, climacteric and post-climacteric) were also analyzed. The analysis of the RNAseqatlas presented here reveals strong differences in gene expression patterns between different organs, especially between root and flower, but also reveals similarities among the gene expression patterns in other organs, such as stem, leaves and aerial buds (vegetative organs) or seed and fruit (storage organs). Important regulators, functional categories, and differentially expressed genes involved in avocado fruit ripening were identified. Additionally, to demonstrate the utility of the avocado gene expression atlas, we investigated the expression patterns of genes implicated in fatty acid metabolism and fruit ripening. Conclusions: A description of transcriptomic changes occurring during fruit ripening was obtained in Mexican avocado, contributing to a dynamic view of the expression patterns of genes involved in fatty acid biosynthesis and the fruit ripening process

Inhibition of ethoxy- and pentoxy-resorufin dealkylases of rat liver by flavones and flavonols : structure - activity relationship

International audienc

Inhibition of ethoxy- and pentoxy-resorufin dealkylases of rat liver by flavones and flavonols : structure - activity relationship

International audienc

Pengantar ekonomi mikro

Bagian Ixiv, 139 p.; 23 cm

Détermination expérimentale des moments dipolaires des isomères rotationnels d’acétates d’énols

Des mesures expérimentales de variation des moments dipolaires en fonction de la température ont été effectuées sur les molécules d'acétates de vinyle, d’isopropényle et de cis et trans propényle. L’enthalpie conformationnelle expérimentale relative à l’équilibre de deux conformères a été déterminée par optimisation graphique pour les trois premiers composés et est de l’ordre de 1,2 kcal.mol-1. L’augmentation du moment dipolaire expérimental montre que dans le cas de l'acétate de vinyle et de cis propényle la conformation la plus stable est une forme plane de faible moment dipolaire où l’oxygène carboxylique est en cis avec l’enchaînement vinylique et le carbone vinylique terminal en trans par rapport au groupement acétate. Il existe pour ces composés d’autres conformations de moments dipolaires plus élevés