Peak Discharge
Mostrando 13-24 de 136 artigos, teses e dissertações.
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13. Abundance and species composition of planktonic Ciliophora from the wastewater discharge zone in the Bahía Blanca Estuary, Argentina
The specific composition and abundance variation of the ciliate community from a wastewater discharge zone in the Bahía Blanca estuary, Argentina, were studied all throughout a year, from June 1995 to May 1996. The polluted area exhibited high values of particulate organic matter and nutrients, particularly phosphates. Aloricate ciliates were represented by
Iheringia. Série Zoologia. Publicado em: 2003-09
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14. Stonefly (Plecoptera) fauna of streams in a mountainous area of Central Brazil: abiotic factors and nymph density
The stonefly (Pleeoptera) nymphs of streams of the Almas River basin, Pirenópolis, Goiás State, Central Brazil, and some abiotie factors that might affect their temporal distribution were studied. Nymphs were sampled monthly (June 1993 to July 1994) in five stations with a Surber sampler, and each sample consisted of 20 units totalling 2 m². In each stati
Revista Brasileira de Zoologia. Publicado em: 2002-07
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15. Analysis and modelling of negative downward lightning current curves between 1985 and 1994 at Morro do Cachimbo research station (MG) / Analise e modelagem de curvas de corrente de relampagos negativos descendentes entre 1985 e 1994, na estacao de pesquisa do Morro do Cachimbo - MG
In this thesis is presented an analysis of 22 negative descendent lightning collected in Brazil from 1985 to 1994 in the Morro do Cachimbo research station (43o 58 26 W, 20o 0039 S) of the Companhia Energética de Minas Gerais (CEMIG). The historic evolution of direct discharge measurements and the thecniques involved are summarised. From the comparation of
Publicado em: 1998
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16. Fotocondutividade no nitreto de silicio amorfo hidrogenado não estiquiometrico
The off-stoichiometric amorphous hydrogenated silicon nitride (a-SiNx:H) has been studied in the last few years due to its possible applications in photovoltaic devices in many laboratories in the world. In the present work we present the results of measurements of photoconductivity versus temperature and light intensity in material prepared by glow discharg
Publicado em: 1985
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17. Discharge of the hypoglossal nerve cannot distinguish eupnea from gasping, as defined by phrenic discharge, in the in situ mouse
If normal, eupneic breathing fails, gasping is recruited. Serotonin was proposed as essential for gasping, based on findings using an in vitro mouse preparation. This preparation generates rhythmic activities of the hypoglossal nerve that are considered to be akin to both eupnea and gasping. In previous studies, gasping of in situ rat and mouse preparations
American Physiological Society.
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18. Rhythmic discharge of climbing fibre afferents in response to natural peripheral stimuli in the cat.
The rhythmicity of inferior olivary neurones evoked by natural ipsilateral forepaw inputs was evaluated in the climbing fibre afferent discharge of Purkinje cells recorded in the cerebellar cortex of the decerebrate, unanaesthetized cat. Almost 50% of all Purkinje cells responding to the forepaw stimulus with an increase in complex spike activity exhibited p
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19. Asthma: audit of peak flow rate guidelines for admission and discharge.
A two part 8.5 month study was undertaken to see if peak expiratory flow rate (PEFR) could be used to guide casualty officers deciding whether to admit or discharge children with asthma. In part 1 PEFR, immediate treatment, and admission or discharge of all children attending because of asthma were recorded. In part 2 the same information was recorded after
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20. Recruitment and rate coding organisation for soleus motor units across entire range of voluntary isometric plantar flexions
Unlike upper limb muscles, it remains undocumented as to how motor units in the soleus muscle are organised in terms of recruitment range and discharge rates with respect to their recruitment and de-recruitment thresholds. The possible influence of neuromodulation, such as persistent inward currents (PICs) on lower limb motor unit recruitment and discharge r
Blackwell Science Inc.
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21. Evidence for two different heat transduction mechanisms in nociceptive primary afferents innervating monkey skin.
1. Mechano- and heat-sensitive A fibre nociceptors (AMHs) and C fibre nociceptors (CMHs) in hairy skin (forty-six AMHs and twenty-one CMHs) and in glabrous skin (fifty-nine AMHs and ten CMHs) of anaesthetized monkeys were tested with a 30 s, 53 degrees C heat stimulus, delivered by a laser thermal stimulator (0.1 s rise time, 7.5 mm diameter). 2. Two types o
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22. Discharges of pyramidal tract and other motor cortical neurones during locomotion in the cat.
A method is described for chronically implanting fine flexible microwires into cat motor cortex, which permitted extracellular recordings to be made from 165 single neurones. Most units were recordable for 12 h and some for up to 2 days. Of the neurones tested, 57% were shown to project to the medullary pyramid (pyramidal tract neurones, p.t.n.s). Antidromic
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23. Short term synchronization of human motor units and their responses to transcranial magnetic stimulation.
1. The voluntary discharge characteristics, short term synchronization, coherence and responses to transcranial magnetic stimulation of a sample of twenty-two pairs of simultaneously recorded low threshold motor units in the right human first dorsal interosseus muscle have been determined. 2. Peristimulus time histograms and cumulative sums (cusums) of motor
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24. The effect of small changes in arterial carbon dioxide tension on carotid chemoreceptor activity in the cat.
The hypothesis that the fluctuations in carotid chemoreceptor discharge represent more than a simple proportional response to respiratory oscillations of Pa, CO2 has been examined. Simultaneous recordings of the activity in few- or multi-fibre chemoreceptor preparations of the cut carotid sinus nerve and oscillations of carotid arterial pH have been made in