Fireballs recorded between May and July 2021 by the Southwestern Europe Meteor Network

This work focuses on the analysis of the most remarkable bolides recorded over the Iberian Peninsula and neighboring areas in the framework of the Southwestern Europe Meteor Network (SWEMN) and the SMART project. These events were spotted from May to July 2021.Spanish Ministry of Science and Innovation (project PID2019-105797GB-I00).State Agency for Research of the Spanish MCIU through the “Center of Excellence Severo Ochoa” award to the Instituto de Astrofísica de Andalucía (SEV-2017-0709).Spanish grant AYA - RTI2018 – 098657 -J - I00 “LEO – SBNAF” (MCIU / AEI / FEDER, UE)

Families of Canonical Transformations by Hamilton-Jacobi-Poincar\'e equation. Application to Rotational and Orbital Motion

The Hamilton-Jacobi equation in the sense of Poincar\'e, i.e. formulated in the extended phase space and including regularization, is revisited building canonical transformations with the purpose of Hamiltonian reduction. We illustrate our approach dealing with orbital and attitude dynamics. Based on the use of Whittaker and Andoyer symplectic charts, for which all but one coordinates are cyclic in the Hamilton-Jacobi equation, we provide whole families of canonical transformations, among which one recognizes the familiar ones used in orbital and attitude dynamics. In addition, new canonical transformations are demonstrated.Comment: 21 page

A importância do controle social, participação e monitoramento da situação fiscal - Santiago de Cali: comunas 14 e 19

This research is an analysis of public investment under the citizen oversight approach, observing the pertinence of the Municipal Territorial Taxation Office (SFTM) in the municipality of Cali, communes 14 and 19; where public investments are made to improve people´s life through the redistribution of the State income; having as tools the Annual Operative Plans of Investment (POAI), the Plans of Development of Communes and Corregimientos, the budget of income and the budgetary execution.This work highlights the importance of citizen participation not only as political subjects seeking a solution to the problems of their commune, but also as subjects of change through the citizen oversight in monitoring the SFTM to comply with the deadlines and amounts of the investment, in addition to the relevance of this to improve the quality of life of the community.Esta investigación es un análisis de la inversión pública  bajo el enfoque del control social, observando la pertinencia del Situado Fiscal Territorial Municipal (SFTM) en el municipio Cali, comunas 14 y 19; donde se realiza una inversión que busca mejorar la calidad de vida de las personas a través de la redistribución de los ingresos del Estado; teniendo como herramientas los Planes Operativos Anuales de Inversión (POAI), los Planes de Desarrollo de Comunas y Corregimientos, el presupuesto de ingresos y la ejecución presupuestal. El presente trabajo, resalta la importancia de la participación ciudadana no solo como sujetos políticos buscando una solución a la problemática de su comuna, sino también como sujetos de cambio, realizando a través del control social, el seguimiento al SFTM para dar cumplimiento a los plazos y montos de la inversión, además de la pertinencia de esta para mejorar la calidad de vida de su comunidad.  Esta pesquisa é uma análise do investimento público sob a abordagem de controle social, observando a relevância do Fiscal Territorial Municipal no município de Cali, comunas 14 e 19 (são regiões administrativas em algumas cidades da colômbia); onde é feito um investimento que busca melhorar a qualidade de vida das pessoas através da redistribuição da renda do Estado; tendo como ferramentas Planos Operacionais Anuais de Investimento (POAI), Planos de Desenvolvimento Local, orçamento de receita e a execução orçamentaria. Este artigo destaca a importância da participação cidadã não apenas como sujeitos políticos que buscam uma solução para o problema de sua comunidade, mas também como sujeitos de mudança, por meio do controle social, monitorando o SFTM para cumprir prazos e valores de investimento, além da relevância disso para melhorar a qualidade de vida de sua comunidade

Quantitative predictions with detuned normal forms

The phase-space structure of two families of galactic potentials is approximated with a resonant detuned normal form. The normal form series is obtained by a Lie transform of the series expansion around the minimum of the original Hamiltonian. Attention is focused on the quantitative predictive ability of the normal form. We find analytical expressions for bifurcations of periodic orbits and compare them with other analytical approaches and with numerical results. The predictions are quite reliable even outside the convergence radius of the perturbation and we analyze this result using resummation techniques of asymptotic series.Comment: Accepted for publication on Celestial Mechanics and Dynamical Astronom

Tauroursodeoxycholic Acid Improves Motor Symptoms in a Mouse Model of Parkinson's Disease

Parkinson's disease (PD) is characterized by severe motor symptoms, and currently there is no treatment that retards disease progression or reverses damage prior to the time of clinical diagnosis. Tauroursodeoxycholic acid (TUDCA) is neuroprotective in the 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) mouse model of PD; however, its effect in PD motor symptoms has never been addressed. In the present work, an extensive behavior analysis was performed to better characterize the MPTP model of PD and to evaluate the effects of TUDCA in the prevention/improvement of mice phenotype. MPTP induced significant alterations in general motor performance paradigms, including increased latency in the motor swimming, adhesive removal and pole tests, as well as altered gait, foot dragging, and tremors. TUDCA administration, either before or after MPTP, significantly reduced the swimming latency, improved gait quality, and decreased foot dragging. Importantly, TUDCA was also effective in the prevention of typical parkinsonian symptoms such as spontaneous activity, ability to initiate movement and tremors. Accordingly, TUDCA prevented MPTP-induced decrease of dopaminergic fibers and ATP levels, mitochondrial dysfunction and neuroinflammation. Overall, MPTP-injected mice presented motor symptoms that are aggravated throughout time, resembling human parkinsonism, whereas PD motor symptoms were absent or mild in TUDCA-treated animals, and no aggravation was observed in any parameter. The thorough demonstration of improvement of PD symptoms together with the demonstration of the pathways triggered by TUDCA supports a subsequent clinical trial in humans and future validation of the application of this bile acid in PD.National funds, through the Foundation for Science and Technology (Portugal) (FCT), under the scope of the projects PTDC/NEU-NMC/0248/2012, UID/DTP/04138/2013 and POCI-01-0145-FEDER-007038, and post-doctoral grants SFRH/BPD72891/2010 (to A.I.R.), SFRH/BPD/95855/2013 (to M.J.N.), SFRH/BPD/98023/2013 (to A.N.C.), SFRH/BPD/91562/2012 (to A.S.F.) and UMINHO/BI/248/2016 (to S.D.S.). This work has also been developed under the scope of the project NORTE-01-0145-FEDER-000013, supported by the Northern Portugal Regional Operational Program (NORTE 2020), under the Portugal 2020 Partnership Agreement, through the European Regional Development Fund (FEDER), and by FEDER funds, through the Competitiveness Factors Operational Program (COMPETE)info:eu-repo/semantics/publishedVersio

Ethanol reforming in non-equilibrium plasma of glow discharge

The results of a detailed kinetic study of the main plasma chemical processes in non-equilibrium ethanol/argon plasma are presented. It is shown that at the beginning of the discharge the molecular hydrogen is mainly generated in the reaction of ethanol H-abstraction. Later hydrogen is formed from active H, CH2OH and CH3CHOH and formaldehyde. Comparison with experimental data has shown that the used kinetic mechanism predicts well the concentrations of main species at the reactor outlet.Comment: 16 pages, 8 figure