Search results for "PPAR"
showing 10 items of 1686 documents
Effects of Ga3 and Ca2+ on barley aleurone protoplasts: a freeze-fracture study
1988
Freeze-fracture electron microscopy was used to study changes in the endomembrane system of barley (Hordeum vulgare L. cv. Himalaya) aleurone protoplasts. Protoplasts were used for this study because their response to calcium and the plant hormone gibberellic acid (Ga3) can be monitored prior to rapid freezing of cells for electron microscopy. Protoplasts incubated in Ga3 plus Ca2+ secrete elevated levels of a-amylase relative to cells incubated in Ga3 or Ca2+ alone. The endoplasmic reticulum (ER) and Golgi apparatus of protoplasts incubated in Ga3 plus Ca2+ undergo changes that are well correlated with the synthesis and secretion of a-amylase. The ER, which appears as short, single sheets …
Participer pour rendre le travail possible. Les staffs en unités de soins palliatifs
2018
Répondant à un mandat médical particulier — soigner sans guérir —, les professionnels de soins palliatifs font d’une partie du « sale boulot » hospitalier leur cœur de métier. Dans l’incapacité d’y faire face seuls mais aussi pour lutter contre la souffrance au travail, les médecins attendent des personnels paramédicaux qu’ils participent à l’élaboration du soin à travers des réunions pluridisciplinaires nommées « staff ». Cette participation modifie la division du travail habituellement en vigueur à l’hôpital, et entraîne des « charges de la participation » supplémentaires pour les paramédicaux. Mais dans le même temps, les staffs permettent aux paramédicaux de s’approprier les cadres cult…
A mathematical model to evaluate apparent losses due to meter under-registration in intermittent water distribution networks
2013
Apparent losses consist of water volume drawn from the network, consumed by users but not paid for. Those due to water meter under-registration were evaluated by means of a mathematical model able to analyse the complexity of intermittent supply systems with private tanks. This supply scheme is very common in the Mediterranean area where unexpected water shortage often happens and intermittent water supply is a common practice. In order to analyse such complex systems, a demand model, reproducing the effect of private tanks, and an apparent losses module were developed and coupled with an hydraulic network model based on the Global Gradient Algorithm (GGA). In distribution networks pressure…
Evaluation of the apparent losses caused by water meter under-registration in intermittent water supply
2009
Apparent losses are usually caused by water theft, billing errors, or revenue meter under-registration. While the first two causes are directly related to water utility management and may be reduced by improving company procedures, water meter inaccuracies are considered to be the most significant and hardest to quantify. Water meter errors are amplified in networks subjected to water scarcity, where users adopt private storage tanks to cope with the intermittent water supply. The aim of this paper is to analyse the role of two variables influencing the apparent losses: water meter age and the private storage tank effect on meter performance. The study was carried out in Palermo (Italy). Th…
A PC-based wattmeter for high accuracy power measurements
2010
This paper proposes the use of a commercial data acquisition board (DAQ) connected to a common personal computer for high accuracy power measurements. In the paper the set up of the PC-based wattmeter is described and an experimental evaluation of its metrological performances is made by means of the comparison with a simultaneous coherent digital sampling wattmeter realized with two high-precision DMMs Hewlett Packard Model 3458 A. In both cases the power source is a Fluke 6100A/E electrical power standard. © 2010 IEEE.
A composite indicator for water meter replacement in an urban distribution network
2012
In water supply management, volumetric water meter are typically used to measure users' consumption. With water meters, utilities can collect useful data for billing, assess the water balance of the system, and identify failures in the network, water theft and anomalous user behaviour. Despite their importance, these instruments are characterised by intrinsic errors that cause so-called apparent losses. The complexity of the physical phenomena associated with metering errors in aging water meters does not allow meter replacement to be guided by single parameters, such as the meter age or the total volume passed through the meter. This paper presents a meter replacement strategy based on a c…
Yacht performance monitoring in real sailing conditions
2019
Abstract In this paper a multi-method approach is used to setup and validate a monitoring system applied to a small sailing boat during real sailing conditions. This monitoring system is able to transform the data coming from some typical devices installed on board into information about the deformed state of the boat. GPS, Wind Data Logger and cameras have been installed on the boat to measure its route and speed, the apparent wind velocity and direction and the positions of the crew members. These data are processed to determine the equilibrium of the boat and estimate the loads applied on it. Then, a CAD/FEM model calculates the effects of these loads on the boat shape. The resulting def…
L’apparato effimero allestito nella cattedrale di Palermo per le cerimonie funebri di Carlo III di Borbone (1789): storia e rappresentazione digitale
2022
The paper focus on the ephemeral apparatus realized by the architect Salvatore Attinelli on the occasion of the funeral of Charles III of Bourbon, to be set up inside the cathedral of Palermo, in those years affected by a total internal modernization based on the project commissioned in 1767 to Ferdinando Fuga. This apparatus, in an article published by the academic Giuseppina Leone in 2001, was considered an alternative project to the proposal of Ferdinando Fuga, considered expensive and with a language not responding to the rules of good and modern architecture. The purpose of this paper is to reinforce the hypothesis of an apparatus having design purposes, and to verify its feasibility t…
COPD classification methods and informativeness on mortality: Contrasting evidences
2013
Understanding whether the ABCD GOLD classification method is informative with respect to the spirometric classification of severity in predicting mortality of patients with chronic obstructive pulmonary disease (COPD) is subject of debate. The results of a study performed on a sample of the Norwegian population (HUNT2) were recently published. Such data showed the inferiority of ABCD classification in predicting mortality compared to the spirometric classification, which was considered the gold standard up to the 2011 version of GOLD guidelines. This result is not in line with the results of other studies that have shown the equivalence of the two classifications. The new GOLD classificatio…
Crise de l'appareil productif et évolution de l'emploi des jeunes
1983
International audience