Enhanced detection and sizing algorithm to improve LOAC optical particle counter performances.

The light optical aerosols counter (LOAC) instrument is an optical aerosol counter that allows atmospheric particles from 0.2 to 50 µm to be individually counted and classified by size. The scattered light due to the interaction between a particle and a laser beam is captured by photodiodes and produces an electric pulse.

Insights on hiv pre-test counseling following scaling-up of PMTCT program in rural health posts, Burkina Faso.

Background: Quality of pre-test counseling in empowering women to make informed decisions related to HIV/AIDS is regarded as a key element to ensure effectiveness of PMTCT interventions. This cross-sectional study examined how well HIV testing services with 'Opt in' strategy are being delivered following scaling-up of PMTCT programs in rural peripheral health centers in Burkina Faso.

Methods: We observed the process of HIV testing service delivery and evaluate 19 pre- test counseling sessions linked with 16 in-depth interviews with the pregnant women.

Removing artifacts and background activity in multichannel electroencephalograms by enhancing common activity.

Removing artifacts and background EEG from multichannel interictal and ictal EEG has become a major research topic in EEG signal processing in recent years. We applied for this purpose a recently developed subspace-based method for modelling the common dynamics in multichannel signals. When the epileptiform activity is common in the majority of channels and the artifacts appear only in a few channels the proposed method can be used to remove the latter.

Modeling common dynamics in multichannel signals with applications to artifact and background removal in EEG recordings.

Removing artifacts and background electroencephaloraphy (EEG) from multichannel interictal and ictal EEG has become a major research topic in EEG signal processing in recent years. We applied for this purpose a recently developed subspace-based method for modeling the common dynamics in multichannel signals. When the epileptiform activity is common in the majority of channels and the artifacts appear only in a few channels the proposed method can be used to remove the latter.

[A critical confusion state of frontal origin in elderly subjects: difficult diagnosis].

The authors discuss the case of four patients aged over 75 years who presented non-convulsive, but confusional status epilepticus. The EEG recordings during clinical status showed bilateral spikes of slow wave discharges in the frontal region. Following slow intravenous infusion of 10 mg of diazepam, EEG and clinical status returned quickly to normal.