Noether's Symmetry Theorem for Variational and Optimal Control Problems with Time Delay

We extend the DuBois-Reymond necessary optimality condition and Noether's symmetry theorem to the time delay variational setting. Both Lagrangian and Hamiltonian versions of Noether's theorem are proved, covering problems of the calculus of variations and optimal control with delays.Comment: This is a preprint of a paper whose final and definite form will appear in the international journal Numerical Algebra, Control and Optimization (NACO). Paper accepted for publication 15-March-201

Avaliação das características agronômicas de sete adubos verdes de inverno no município de Paty do Alferes(RJ).

Adubação verde. Cobertura do solo, produção e fitomassa e acúmulo de macronutrientes.bitstream/CNPAB-2010/27145/1/cot020.pd

Principais clostridioses dos ovinos e caprinos: sinais clínicos e medidas preventivas.

bitstream/item/31671/1/Comunicado-Tecnico-144.pd

Environmental Governance in the Insertion of Electric Mobility in the Fernando of Noronha Archipelago (Brazil, Pernambuco)

Climate change is a topic that has been gaining importance in global discussions In addition to industries automobiles release greenhouse gases GHG into the atmosphere that act directly on the increase of the greenhouse effect and consequently on the increase in the temperature of the globe which requires measures to minimize their effects on the atmosphere The island of Fernando de Noronha has been used as a model for the implementation of electric mobility Law n 16 810 2020 establishes that until 2030 combustion cars will no longer be allowed to enter the island being replaced by electric cars Solar electric mobility has been gradually taking place in this territory and with conflicts on the part of those interested who use vehicles as a means of subsistence on the island This research aimed to analyze how environmental governance was carried out in the process of inserting electric mobility on the island of Fernando de Noronha PE through bibliographical and documentary research interviews and observation In view of the results it was observed in the environmental governance of the electric mobility insertion process that only three principles of environmental governance were identified within this territory decentralization transparency and security leaving the other principles behin

Mathematical retroreflectors

Retroreflectors are optical devices that reverse the direction of incident beams of light. Here we present a collection of billiard type retroreflectors consisting of four objects; three of them are asymptotically perfect retroreflectors, and the fourth one is a retroreflector which is very close to perfect. Three objects of the collection have recently been discovered and published or submitted for publication. The fourth object - notched angle - is a new one; a proof of its retroreflectivity is given.Comment: 32 pages, 19 figure

Multidrug-Resistant Klebsiella Pneumoniae Meningitis Successfully Treated with Intrathecal Colistin

Background: Multidrug-resistant (MDR) gram negative bacteria meningitis has become a clinical entity with increasing importance in recent years. Intrathecal colistin (ITH) has been used in the treatment of this cases. Aims: To report one case of MDR Klebsiella pneumoniae meningitis and ventriculitis successfully treated with ITH colistin. Case Report: Nine months old boy, born at 28 weeks of gestational age, diagnosed with neonatal meningitis, complicated with tetraventricular hydrocephalus requiring ventriculo-peritoneal shunt (VPS) placement and multiple shunt revisions. Admitted for worsening hydrocephalus. Cerebrospinal fluid (CSF) cultures were positive for extended-spectrum β-lactamase (ESBL) Klebsiella pneumoniae, only sensitive to meropenem and amikacin. Intravenous meropenen was started but CSF cultures remained positive and shunt device could not be removed. Although susceptibility to colistin was not available, on day 24 intrathecal colistin(4mg/day) was started through an external shunt. CSF white blood cell count improved and cultures became negative. Colistin was stopped after 19 days because of CSF pleocitosis and meropenen maintained for a total of 2 months with clinical improvement. Conclusion: In Klebsiella pneumoniae meningitis with ventriculitis, ITH colistin can be considered a safe, effective, and practicable alternative treatment when parental administration fails.info:eu-repo/semantics/publishedVersio

Evaluation of a new sonic anemometer for routine monitoring and emergency response applications

Recently, several new sonic anemometers have become available for routine wind measurements. Sonic anemometers avoid many problems associated with the traditional rotating anemometer and vane sets- inertia of moving parts, bearing wear, contamination from dust and ice, frequent maintenance. Without a starting threshold, the sonic anemometer also produces more accurate measurements of wind direction and sigma theta at very low wind speeds. We illustrate these advantages by comparing 20 days of observations from a new sonic anemometer with data from existing cup and vane sensors at the 10-m level of Lawrence Livermore National Laboratory`s meteorological tower

Age-related expression of TGF beta family receptors in human cumulus oophorus cells

During ovarian follicle growth, local cellular interactions are essential for oocyte quality acquisition and successful fertilization. While cumulus cells (CCs) nurture oocytes, they also deliver oocyte-secreted factors (OSFs) that activate receptors on CCs. We hypothesized that disturbance of those interactions contributes to age-related lower reproductive success in women submitted to assisted reproductive technology treatments.info:eu-repo/semantics/publishedVersio

Valores como predictores de satisfacción con la vida en los jóvenes

Numa perspectiva funcionalista, os valores são uma expressão cognitiva das necessidades humanas, princípios que orientam o comportamento para metas mais pessoais, sociais ou gerais de vida, cujo impacto psicossocial merece mais investigação. Neste estudo, analisou-se em que medida o tipo de orientação dos valores prediz a satisfação com a vida de 562 jovens portugueses (n = 303, 53,9% mulheres), com idades entre 14 e 22 anos (M = 16,9, DP = 1,71), que frequentam o ensino médio: via profissionalizante (63,7%) e regular (36,3%). Os jovens completaram o Questionário de Valores Básicos e a Escala de Satisfação com a Vida. Os resultados da análise de regressão linear indicam que a orientação dos valores explica menos de um quarto da variabilidade da satisfação com a vida, o que suscita a necessidade de se analisar o seu poder explicativo em conjunto com outras variáveis, por exemplo, de personalidade e sociocognitivas.In a functionalist perspective, values are a cognitive expression of human needs as well as principles that guide behaviors to personal, social or general life goals, whose psychosocial impact deserves more investigation. This study aimed to analyze whether the type of values orientation predicts life satisfaction in 562 Portuguese youths (n = 303, 53.9% women) aged 14 to 22 years (M = 16.9; SD = 1.71), attending high school studies, being 63.7% technical and (36.3%) regular high school.Students completed the Basic Values Survey and the Satisfaction With Life Scale. The results of the linear regression analyzes indicate that the values orientation explains less than a quarter of life satisfaction variability, which indicated the need to further analyze its explanatory power together with other variables, such as, personality and socio-cognitive.Desde el punto de vista funcional, los valores son una expresión cognitiva de las necesidades humanas, principios que orientan el comportamiento hacia metas más personales, sociales o generales de vida, cuyo impacto psicosocial necesita más investigación. En este estudio se analizó en qué medida el tipo de orientación de los valores predice la satisfacción con la vida de 562 jóvenes portugueses (n = 303, 53.9% mujeres), con edades entre 14 y 22 años ( = 16.9, P = 1.71) que frecuentan Enseñanza Secundaria: profesional (63.7%) y normal (36.3%). Los jóvenes completaron el Cuestionario de Valores Básicos y la Escala de Satisfacción con la Vida. Los resultados del análisis de regresión lineal indican que la orientación de los valores explica menos de una cuarta parte de la variabilidad de satisfacción con la vida, lo que plantea la necesidad de analizar su poder explicativo, junto con otras variables, por ejemplo, de personalidad y socio-cognitivas.(undefined)info:eu-repo/semantics/publishedVersio