Search results for "IAQ"

Distribution of basal-expressed c-fos-like immunoreactive cells of the periaqueductal grey matter of the rat.

1996

The distribution of c-fos proto-oncogene expression has been studied in the periaqueductal grey matter (PAG) of non-intentional-stimulated rats by immunohistochemistry. A mean number of 53 +/- 9 Fos-like immunoreactive cells per hemiPAG, distributed into three groups, dorsolateral, lateral and ventrolateral, was found. The dorsolateral and the lateral groups appeared along the entire rostrocaudal PAG, whereas the ventrolateral group appeared only in the caudal half. These results reveal new data on the number and extent of the longitudinal columns within the hypothetical organization of the PAG. They also indicate a continuous activation of a significant population of neurones in the PAG, i…

Synthesis, structural and spectroscopic characterization of the α,ω-diammonioalkane hexabromorhodates( III) [H3N(CH2)xNH3]2[H5O2][RhBr6]Br2 (x = 3, 4…

2002

The reaction of rhodium(III) chloride trihydrate with 1,3-diaminopropane and 1,4-diaminobutane in concentrated hydrobromic acid results in the formation of the bis(α,ω-diammonioalkane) diaquahydrogen(1+) hexabromorhodate(III) dibromides [H3N(CH2)xNH3]2[H5O2][RhBr6]Br2 (x = 3, 4). Dark red single crystals were obtained by diffusion-controlled crystallization at room temperature. Both compounds crystallize in space group type P1̄ and their structures are closely related. In view of crystal engineering they are inorganic-organic hybrid materials built up from octahedral [RhBr6]3−, simple Br− and flexible chain-like [H3N(CH2)xNH3]2+ ions with the [H5O2]+ and further Br− ions incorporated and th…

IAQ monitoring in heritage buildings

2005

Heritage buildings often operate in free conditions, as they are not equipped with HVAC systems. This calls for the interventions of proper measurements with the aim of monitoring and controlling indoor physical parameters. As matter of fact, the control of indoor conditions in museums is of paramount importance for the proper preservation of artefacts. Moreover, in such buildings another requirement should be achieved, that is the maintenance of the comfort and safety conditions for visitors. In this work the results of a survey carried out on a hall of a historical palace to estimate the people occupancy by making use concentration of CO(2) are reported.

Towards real-time detection of cognitive effort in driving: Contribution of cardiac measurement

2016

En 2013, on estime que 40 à 50% des accidents corporels seraient dus à des défauts d'attention de la part du conducteur. Des études récentes ont mis en évidence la possibilité de détecter des états attentionnels dégradés afin de pouvoir mieux assister le conducteur ; ce thème de recherche représente donc un nouveau gisement de sécurité routière. Cette étude se concentre sur la détection de l'effort cognitif fournit par les conducteurs et cherche, par l'étude de la variation du rythme cardiaque, à identifier un indicateur d'effort sensible sur de courtes fenêtres temporelles.Chacun des 18 participants a passé 8 conditions expérimentales sur simulateur de conduite : la moitié où seule une tâc…

Elevated [18F]FDOPA utilization in the periaqueductal gray and medial nucleus accumbens of patients with early Parkinson's disease

2010

Udgivelsesdato: 2010-Feb-15 PET studies with the DOPA decarboxylase substrate 6-[(18)F]fluoro-l-DOPA (FDOPA) reveal the storage of [(18)F]-fluorodopamine within synaptic vesicles, mainly of dopamine fibres. As such, FDOPA PET is a sensitive indicator of the integrity of the nigrostriatal dopamine innervation. Nonetheless, there have been several reports of focal elevations of FDOPA utilization in brain of patients with Parkinson's disease (PD), all based on reference tissue methods. To investigate this phenomenon further, we used voxel-wise steady-state kinetic analysis to search for regions of elevated FDOPA utilization (K; ml g(-1) min(-1)) and steady-state trapping (V(d); ml g(-1)) in a …

La celiaquía en la educación obligatoria. Propuesta y evaluación de una unidad didáctica para la adquisición de competencias específicas en Salud.

2017

Desde hace algunos años se observa un interés cada vez mayor hacia los factores susceptibles de promover la salud. La realización del presente trabajo nace de la observación, como profesionales de la enseñanza, de la poca información que los estudiantes y los docentes tienen sobre las patologías relacionadas con la alimentación y en particular de la celiaquía. La celiaquía es una enfermedad autoinmnune que se caracteriza por una inflamación crónica de la de la parte próxima del intestino delgado causada por la exposición a la gliadina, que es uno de los componentes del gluten (proteína presente en el trigo, la cebada, el centeno, el triticale, el kamut, la espelta y posiblemente la avena). …

First-degree atrioventricular block and pseudopacemaker syndrome

2013

Central functional response to the novel peptide cannabinoid, hemopressin.

2013

Hemopressin is the first peptide ligand to be described for the CB₁ cannabinoid receptor. Hemopressin acts as an inverse agonist in vivo and can cross the blood-brain barrier to both inhibit appetite and induce antinociception. Despite being highly effective, synthetic CB₁ inverse agonists are limited therapeutically due to unwanted, over dampening of central reward pathways. However, hemopressin appears to have its effect on appetite by affecting satiety rather than reward, suggesting an alternative mode of action which might avoid adverse side effects. Here, to resolve the neuronal circuitry mediating hemopressin's actions, we have combined blood-oxygen-level-dependent, pharmacological-ch…

Ventilation Problems in Heritage Buildings

2007

The control of indoor conditions in heritage buildings, such as castles or museums, is of paramount importance for the proper preservation of the artworks kept in. As heritage buildings are often not equipped with HVAC systems, it is necessary to provide proper interventions and measures with the aim of monitoring and controlling indoor physical parameters. Moreover, another requirement should be achieved in such buildings, that is the maintenance of the safety conditions in presence of visiting people. This work reports the results of a survey carried on a hall of a historical palace, aimed to assess an useful correlation between CO2 concentration and occupancy levels.

Walk tests : a standardizable tool to assess capacities in cardio-vascular disease

2011

Cardiovascular and cerebrovascular diseases remain the first cause of mortality and handicap in the world. With the improvements in the management of the acute phase, the number of patients with limited exercise capacity due to chronic cardiovascular disease is increasing. The aim of this thesis was to conduct a thorough study of the use of standardized walk tests to assess exercise capacity in coronary artery disease patients. We first explain the concepts of handicap and quality of life in chronic diseases, and the need for functional evaluations in order to assess their impact and evolution. We then present the current modalities of cardiac rehabilitation, emphasizing the importance of p…