Results 41 to 50 of about 93,298 (204)

Tannins in Baccharis dracunculifolia (Asteraceae): effects of seasonality, water availability and plant sex Taninos em Baccharis dracunculifolia (Asteraceae): efeitos da sazonalidade, disponibilidade de água e sexo da planta

open access: yesActa Botânica Brasílica, 1999
Several ecological, genetic, and environmental factors are known to influence tannin concentration in plant tissues. In this study, the effects of seasonality, water availability, and sex of the plant on tannin concentration in the dioecious shrub ...
Mário M Espírito-Santo   +3 more
doaj   +1 more source

Hybrid Force Control with on/off Electropneumatic Standard Distributors [PDF]

open access: yesInternational Journal of Fluid Power, 2006
This paper presents a new control method applied to the electro-pneumatic field. This strategy originates from the hybrid control theory recently developed for the control of asynchronous or synchronous electrical motors, e.g. Retif (2004). The interest of this strategy concerns the possibility of using standard on/off distributors instead of the usual
Sellier, Arnaud   +6 more
openaire   +2 more sources

Contextual analysis of health care at discharge in leprosy: an integrative review [PDF]

open access: yes, 2019
Objective: To analyze contextual relations of health care in the discharge of leprosy. Method: An analytical, reflexive study based on the theoretical framework of context analysis, elaborated through an integrative review of literature in the databases ...
Gomes, Bruna RS   +5 more
core   +1 more source

Dinâmica da água nas palhadas de milho, milheto e soja utilizadas em plantio direto Water fluxes in maize, millet and soybean plant-residue mulches used in direct seeding

open access: yesPesquisa Agropecuária Brasileira, 2006
O objetivo deste trabalho foi avaliar o efeito das palhadas de milho, milheto e soja na capacidade de interceptação e de armazenamento de água, velocidade de dessecamento, porcentagem de cobertura do solo, interceptação da radiação solar e escoamento ...
Fernando Antônio Macena da Silva   +4 more
doaj   +1 more source

Rapid diagnosis of respiratory distress syndrome by oral aspirate in premature newborns

open access: yesJornal de Pediatria (Versão em Português), 2019
Objective: The stable microbubble test on gastric aspirate and on amniotic fluid has been used for the diagnosis of respiratory distress syndrome in the newborn. However, no study has performed this test on oral aspirates from premature infants.
Manoel Antonio da Silva Ribeiro   +4 more
doaj   +3 more sources

Produção e qualidade da videira 'Superior Seedless' sob restrição hídrica na fase de maturação Production and quality of 'Superior Seedless' grapes under irrigation restrictions during berry maturation

open access: yesPesquisa Agropecuária Brasileira, 2009
O objetivo deste trabalho foi avaliar o efeito das condições de deficit hídrico, na fase de maturação da uva, sobre a produção e qualidade da uva 'Superior Seedless' entre julho e novembro de 2007. O experimento foi realizado em delineamento de blocos ao
Lígia Borges Marinho   +7 more
doaj   +1 more source

Computer Control of on-off Electrothermal Processes

open access: yesMeasurement and Control, 1973
A control scheme is described for improving the performance characteristics of an on/off electrothermal process by means of a model of the process. A /though the process itself operates on open loop, the switching sequence is closely controlled by the operation of a closed loop incorporating the model and the process controller.
J. L. Murgatroyd, D. Goodman
openaire   +2 more sources

Economic Liberty, Price Control, and Environmental Harm [PDF]

open access: yes, 2018
One core question in contemporary political economy is whether economic liberties should be constitutionally protected as basic rights. In this article I do not provide a positive argument for the view that economic liberties are basic rights.
Martins, Rafael
core  

Impacto da poluição ambiental na superfície ocular de pacientes com síndrome de Sjögren [PDF]

open access: yes, 2018
Purpose: To evaluate the effect of air pollution on the ocular surface of patients with Sjögren's syndrome. Methods: We investigated the ocular surfaces of thirty patients with Sjögren's syndrome and thirty healthy volunteers (control group) living in ...
Berra, Alejandro   +5 more
core   +2 more sources

Eventos estressantes, estratégias de enfrentamento, auto-eficácia e sintomas depressivos entre idosos residentes na comunidade Stressful events, coping strategies, self-efficacy and depressive symptoms among the elderly residing in the community

open access: yesPsicologia: Reflexão e Crítica, 2008
Foram investigadas relações entre eventos de vida estressantes, estratégias de enfrentamento, auto-eficácia no enfrentamento e depressão em 544 participantes de um estudo sobre envelhecimento bem-sucedido com idosos residentes na comunidade (74,6 ...
Andréa Cristina Garofe Fortes-Burgos   +2 more
doaj   +1 more source

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