R Squared
Mostrando 1-12 de 72 artigos, teses e dissertações.
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1. Estimation and Mapping of the Received Power Level of Digital Signals TV Using Spatial Interpolation Methods
Abstract The signal digitization process of the open television system is still in progress, therefore, the study of the digital signal propagation has great importance so that broadcasters can develop and improve the transmission service. The field measurement of digital signal parameters is one of the most reliable means to analyze the signal propagation i
Journal of Microwaves, Optoelectronics and Electromagnetic Applications. Publicado em: 2022
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2. Stressful life events and hopelessness in adults: the mediating role of mentalization and emotional dysregulation
Objective: Hopelessness is considered a risk factor for several mental and behavioral disorders. Research has shown that a stressful life event can be a significant predictor of hopelessness. The aim of the current research study was to explore the relationship between stressful life events and hopelessness, as well as to analyses the mediation effect of bo
Braz. J. Psychiatry. Publicado em: 2021-08
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3. Elevated Lipoprotein(A) in Children and Adolescents: Early Identification is Key for Successful Intervention
The usefulness of molecularly imprinted polymer assisted paper spray ionization mass spectrometry (MIP-PSI-MS) for the determination of methamphetamine in urine has been demonstrated. MIP-PSI-MS is a method in which a MIP is synthesized on the surface of a paper, producing a chemically selective paper surface with molecular recognition sites for a target ana
Int. J. Cardiovasc. Sci.. Publicado em: 2021-02
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4. Determining Methamphetamine in Urine by Molecularly Imprinted Polymer Assisted Paper Spray Ionization Mass Spectrometry
The usefulness of molecularly imprinted polymer assisted paper spray ionization mass spectrometry (MIP-PSI-MS) for the determination of methamphetamine in urine has been demonstrated. MIP-PSI-MS is a method in which a MIP is synthesized on the surface of a paper, producing a chemically selective paper surface with molecular recognition sites for a target ana
J. Braz. Chem. Soc.. Publicado em: 2021-02
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5. Green Extraction Optimization of Bioactive Compounds from Rosemary (Rosmarinus officinalis L.) Using Response Surface Methodology
Rosemary (Rosmarinus officinalis L.) is known for its bioactive compounds with high antioxidant potential and pharmacological properties, such as antibacterial, antidepressant and anti-inflammatory. These properties are attributed to the presence of (poly)phenolic compounds. In the literature there is no extraction of these compounds with a totally non-toxic
J. Braz. Chem. Soc.. Publicado em: 2020-12
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6. Validation of a questionnaire designed to measure nursing student satisfaction with practical training
Objetivo: validar um instrumento para avaliar a formação prática e a satisfação com as disciplinas de Prática Clínica de estudantes de enfermagem. Método: estudo observacional, descritivo, transversal (curso 2014-2015). Validação de um questionário autoadministrado e anônimo (17 itens) de satisfação em relação às disciplinas de Prática Cl
Rev. Latino-Am. Enfermagem. Publicado em: 05/12/2019
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7. A GENERALIZED ABOVEGROUND BIOMASS MODEL FOR JUVENILE INDIVIDUALS OF Rhododendron arboreum (SM.) IN NEPAL
ABSTRACT Carbon in the juvenile plants contribute significant share to the total carbon stock in forests. A precise estimate of aboveground biomass of the juvenile stages of trees is therefore very important. We developed a generalized allometric biomass model for the prediction of aboveground biomass of the juvenile individuals of Rhododendron arboreum (Sm.
CERNE. Publicado em: 09/09/2019
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8. Aerial biomass allometric models for Prosopis affinis Spreng. in native Espinal forests of Argentina
RESUMO A estimativa do carbono armazenado nos ecossistemas florestais requer ferramentas precisas para prever a biomassa. Objetivou-se nesse estudo determinar a biomassa aérea individual de Prosopis affinis e sua distribuição por componente; desenvolver modelos alométricos para prever a biomassa, e estimar os fatores de expansão da biomassa (FEB) em flo
Rev. bras. eng. agríc. ambient.. Publicado em: 01/07/2019
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9. A COMPARISON OF NONLINEAR MODELS FOR DESCRIBING WEIGHT-AGE DATA IN ANGLO-NUBIAN DOES
RESUMO Objetivou-se avaliar a idade da pesagem e a qualidade do ajuste de modelos não lineares a dados longitudinais para descrever o padrão de crescimento de fêmeas Anglonubiana. Pesos de 104 animais do nascimento até 60 meses de idade, foram agrupados em 10 classes, com intervalos de seis meses. Em cada classe estimou-se parâmetros A, B e K com modelo
Rev. Caatinga. Publicado em: 09/05/2019
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10. Sports participation and muscle mass affect sex-related differences in bone mineral density between male and female adolescents: A longitudinal study
ABSTRACT BACKGROUND: Sports participation plays an important role in bone gain during childhood and adolescence. The aim here was to identify sex-related determinants of bone mineral density (BMD) differences between male and female adolescents, with emphasis on the role of sports participation. DESIGN AND SETTING: Longitudinal study conducted in a publi
Sao Paulo Med. J.. Publicado em: 08/05/2019
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11. Cumulative changes in water quality caused by six cascading hydroelectric dams on the Jauru River, tributary of the Pantanal floodplain
RESUMO O presente estudo avalia as alterações na qualidade da água, individuais e cumulativas, de seis hidrelétricas (HPP) em cascata, que estão em operação no Rio Jauru, um afluente direto do rio Paraguai, o principal rio da planície de inundação do Pantanal, além de apresentar uma caracterização geral da qualidade da água do Rio Jauru. A qua
RBRH. Publicado em: 18/04/2019
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12. Sympatho-Vagal Imbalance is Associated with Sarcopenia in Male Patients with Heart Failure
Resumo Fundamento: Hiperatividade simpática de repouso e uma reativação parassimpática diminuída pós-exercício têm sido descritas em pacientes com insuficiência cardíaca (IC). No entanto, a associação dessas alterações autonômicas em pacientes com IC sarcopênicos ainda não são conhecidas. Objetivo: O objetivo deste estudo foi avaliar o im
Arq. Bras. Cardiol.. Publicado em: 08/04/2019