10,696,633 research outputs found
Automatic localisation of innervation zones: a simulation study of the external anal sphincter
No full textTraumas of the innervation zone (IZ) of the external anal sphincter (EAS), e.g. during delivery, can promote the development of faecal incontinence. Recently developed probes allow high-resolution detection
of EMG signals from the EAS. The analysis of pelvic floor muscles by surface EMG (in particular, the estimation of the location of the IZ) has potential applications in the diagnosis and investigation of the mechanisms of incontinence.
An automatic method (based on matched filter approach) for the estimation of the IZ distribution of
EAS from surface EMG is discussed and tested using an analytical model of generation of EMG signals
from sphincter muscles. Simulations are performed varying length of the fibres, thickness of the mucosa,
position of the motor units, and force level. Different distributions of IZs are simulated.
The performance of the proposed method in the estimation of the IZ distribution is affected by surface
MUAP amplitude (as the estimation made by visual inspection), by mucosa thickness (performance
decreases when fibre length is higher) and by different MU distributions. However, in general the method
is able to identify the position of two IZ locations and can measure asymmetry of the IZ distribution. This
strengthens the potential applications of high density surface EMG in the prevention and investigation of
incontinence
Estimating motor unit discharge pattern from the surface electromyogram
No full textUdgivelsesdato: MA
Low cost inkjet printing for the fast prototyping of surface EMG detection systems
No full textIn the last years, printing techniques have been developed for the realization of electronic circuits using functional inks. In this field inkjet printing technology has a number of attractive features and received a lot of interest with the development of specifically designed functional inks, including conductive inks based on silver nanoparticles or organic polymers. Some works in literature investigated the use of inkjet printing technique for the development of electrophysiological sensors. The aim of this work was to explore the potentialities of low cost inkjet printing for the prototyping of high-density electrode arrays for the detection of surface electromyographic signal (sEMG). A low cost inkjet system for the printing of conductive tracks based on standard office printer has been setup and tested for the prototyping of sEMG detection systems. The setup allowed the printing of high density bi-dimensional electrode arrays. The sEMG detection systems have been tested on the abductor pollicis muscle and biceps brachii muscle during isometric and dynamic contractions. The detected signals show a good quality and a stable contact without movement artifacts. The proposed system offers the possibility to design and print electrode arrays with different electrode patterns in a few minutes. This characteristic allows developing sEMG detection systems that can be adapted to the anatomy of the muscles under investigation in a short tim
Besprechung zu F. GAZZONI, Manuale di diritto privato, 3a ed., Napoli, 1993
No full textIl contributo costituisce una recensione al manuale di Diritto privato di Gazzoni, uno dei strumenti più efficaci per una robusta conoscenza della materia
Trascrizione delle domande giudiziali e processo esecutivo in Trattato della trascrizione diretto da Enrico Gabrielli e Francesco Gazzoni
No full text
Efeito de populações de percevejos na produtividade, qualidade da semente e características agronômicas da soja.
No full textDurante a safra de soja (Glycine max (L.) Merrill.) de 1995/96 foi conduzido em Londrina, PR, um experimento de campo com o objetivo de avaliar o efeito de três populações de percevejos fitófagos sobre a produtividade, a qualidade da semente, as características agronômicas e os danos causados às sementes de três cultivares comerciais de soja. Os tratamentos experimentais constaram das cultivares EMBRAPA-4, EMBRAPA-48 e BR-36 e dos níveis populacionais de até dois, até quatro percevejos/m da linha de soja, e uma população natural de percevejos, sem controle químico. As amostragens foram efetuadas pelo método do pano, com seis amostras por parcela, iniciadas quando a soja ingressou no estádio R3, prolongando-se até a completa maturação das plantas. Sempre que a população de percevejos atingia o limite pré-estabelecido, eles eram controlados com a aplicação de endosulfan a 525 g/ha de i.a. A população média de percevejos durante todo o período de amostragem foi de 2,1 por metro de linha de soja, superior ao nível de danos estabelecido para esta praga. Os resultados indicaram que os níveis populacionais de percevejos não afetaram a produtividade ou a qualidade da semente de soja, nem suas características agronômicas. As diferenças estatísticas observadas foram causadas pelas cultivares em estudo, com exceção dos danos de percevejos às sementes, identificados pelo teste de tetrazólio, em que observaram-se diferenças causadas pelas populações de percevejos.Título em inglês: Effect of stink buo populations on the yjeld, seed quality and agronomic traits of soybeans
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