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Search Results: 1 - 10 of 131098 matches for " V. Durand "
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Notas para entender a realidade mexicana
Ponte, Víctor Manuel Durand;
Novos Estudos - CEBRAP , 2010, DOI: 10.1590/S0101-33002010000300008
Abstract: bad economic policy decisions, weak rule of law and the conservative rigidity of mexico's political system have led the country to its present state of deep social crisis. the brutal violence of the drug cartels has made explicit the failures of the mexican state.
Confianza y eficacia ciudadana en una sociedad con alta desigualdad
Durand Ponte, Víctor Manuel;
Opini?o Pública , 2006, DOI: 10.1590/S0104-62762006000200003
Abstract: el articulo intenta analizar para el caso mexicano la relación entre la eficacia ciudadana, definida como la percepción de los ciudadanos de su capacidad de influencia en la solución de sus problemas y en el rumbo de las instituciones y la confianza en las instituciones públicas. la hipótesis es que la confianza es un proceso que se construye en la experiencia cotidiana de la vida pública del ciudadano y se servirá de los datos de las encuestas de la secretaría de gobernación de 2000 y 2003.
La persistencia del régimen político mexicano
Víctor Manuel DURAND PONTE
América Latina Hoy , 2009,
Abstract: RESUMEN: En el artículo se analiza el proceso de cambio del sistema político mexicano propuesto en 1988, centrándose en el estudio del sistema populista clásico y su perdurabilidad tras esa fecha, a pesar del cambio anunciado ya llevado a cabo en lo que se refiere a modernización económica. ABSTRACT: In this artycle, the author analyzes the changing process of the Mexican political system proposed in 1988, focusing in the study of the classical populist system and its perdurability since this date, in spite of the announced change of economic modernization.
Predictive Modeling of West Nile Virus Transmission Risk in the Mediterranean Basin: How Far from Landing?
Véronique Chevalier,Annelise Tran,Benoit Durand
International Journal of Environmental Research and Public Health , 2014, DOI: 10.3390/ijerph110100067
Abstract: The impact on human and horse health of West Nile fever (WNF) recently and dramatically increased in Europe and neighboring countries. Involving several mosquito and wild bird species, WNF epidemiology is complex. Despite the implementation of surveillance systems in several countries of concern, and due to a lack of knowledge, outbreak occurrence remains unpredictable. Statistical models may help identifying transmission risk factors. When spatialized, they provide tools to identify areas that are suitable for West Nile virus transmission. Mathematical models may be used to improve our understanding of epidemiological process involved, to evaluate the impact of environmental changes or test the efficiency of control measures. We propose a systematic literature review of publications aiming at modeling the processes involved in WNF transmission in the Mediterranean Basin. The relevance of the corresponding models as predictive tools for risk mapping, early warning and for the design of surveillance systems in a changing environment is analyzed.
Protein Misfolding as an Underlying Molecular Defect in Mucopolysaccharidosis III Type C
Matthew Feldhammer,Stéphanie Durand,Alexey V. Pshezhetsky
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0007434
Abstract: Mucopolysaccharidosis type IIIC or Sanfilippo syndrome type C (MPS IIIC, MIM #252930) is an autosomal recessive disorder caused by deficiency of the lysosomal membrane enzyme, heparan sulfate acetyl-CoA: α-glucosaminide N-acetyltransferase (HGSNAT, EC 2.3.1.78), which catalyses transmembrane acetylation of the terminal glucosamine residues of heparan sulfate prior to their hydrolysis by α-N-acetylglucosaminidase. Lysosomal storage of undegraded heparan sulfate in the cells of affected patients leads to neuronal death causing neurodegeneration and is accompanied by mild visceral and skeletal abnormalities, including coarse facies and joint stiffness. Surprisingly, the majority of MPS IIIC patients carrying missense mutations are as severely affected as those with splicing errors, frame shifts or nonsense mutations resulting in the complete absence of HGSNAT protein.
Mitotic and meiotic studies in a bull carrying the 1/29 and 9/23 Robertsonian translocations
Bouvet A,Cribiu EP,Durand V,Berland HM
Genetics Selection Evolution , 1991, DOI: 10.1186/1297-9686-23-s1-s74
Abstract:
A nitrogen model for European catchments: INCA, new model structure and equations
A. J. Wade,P. Durand,V. Beaujouan,W. W. Wessel
Hydrology and Earth System Sciences (HESS) & Discussions (HESSD) , 2002,
Abstract: A new version of the Integrated Nitrogen in Catchments model (INCA) was developed and tested using flow and streamwater nitrate concentration data collected from the River Kennet during 1998. INCA is a process-based model of the nitrogen cycle in the plant/soil and in-stream systems. The model simulates the nitrogen export from different land-use types within a river system, and the in-stream nitrate and ammonium concentrations at a daily time-step. The structure of the new version differs from the original, in that soil-water retention volumes have been added and the interface adapted to permit multiple crop and vegetation growth periods and fertiliser applications. The process equations are now written in terms of loads rather than concentrations allowing a more robust tracking of mass conservation when using numerical integration. The new version is able to reproduce the seasonal dynamics observed in the streamwater nitrogen concentration data, and the loads associated with plant/soil system nitrogen processes reported in the literature. As such, the model results suggest that the new structure is appropriate for the simulation of nitrogen in the River Kennet and an improvement on the original model. The utility of the INCA model is discussed in terms of improving scientific understanding and catchment management. Keywords: modelling, water quality, nitrogen, nitrate, River Kennet, River Thames
An updated and quality controlled surface mass balance dataset for Antarctica
V. Favier,C. Agosta,S. Parouty,G. Durand
The Cryosphere Discussions , 2012, DOI: 10.5194/tcd-6-3667-2012
Abstract: We present an updated and quality controlled surface mass balance (SMB) database for the Antarctic ice sheet. We retrieved a total of 5284 SMB data documented with important meta-data, to which a filter was applied to discard data with limited spatial and temporal representativeness, too small measurement accuracy, or lack of quality control. A total of 3438 reliable data was obtained, which is about four times more than by applying the same data filtering process to previously available databases. New important data with high spatial resolution are now available over long traverses, and at low elevation in some areas. However, the quality control led to a considerable reduction in the spatial density of data in several regions, particularly over West Antarctica. Over interior plateaus, where the SMB is low, the spatial density of measurements remained high. This quality controlled dataset was compared to results from ERA-Interim reanalysis to assess model representativeness over Antarctica, and also to identify large areas where data gaps impede model validation. Except for very few areas (e.g. Adelie Land), the elevation range between 200 m and 1000 m a.s.l. is not correctly sampled in the field, and measurements do not allow a thorough validation of models in regions with complex topography, where the highest scattering of SMB values is reported. Clearly, increasing the spatial density of field measurements at low elevations, in the Antarctic Peninsula and in West Antarctica remains a scientific priority.
Canine filariosis caused by Dirofilaria immitis in Mozambique : a small survey based on the identification of microfilariae : research communication
E.V. Schwan,D.T. Durand
Journal of the South African Veterinary Association , 2012, DOI: 10.4102/jsava.v73i3.573
Abstract: Dirofilaria immitis was diagnosed in 4 of 13 indigenous dogs from the Province of Zamb zia, Mozambique, by acid phosphatase staining of microfilariae. The finding reconfirms the occurrence of the parasite in Mozambique after 3 decades and emphasises the need for extensive surveys. Additionally, in 1 of the infected dogs, microfilariae of Dipetalonema reconditum were detected, which is the 1st record of this parasite in Mozambique.
Modelling Regional Impacts of Radioactive Pollution on Permanent Grassland
V. Durand,C. Mercat-rommens,P. Curmi,M. Benoit
Journal of Agronomy , 2007,
Abstract: The objective of this study consists in evaluating the sensitivity of the first part of the die grass-milk with respect to an accidental radioactive discharge. We want to know if a single uniform deposit would involve a homogeneous contamination of the grazing grass on the scale of the whole French territory. The study was based on the ASTRAL model, a computer code developed by the IRSN which makes it possible to evaluate the transfer of the radio nuclides in the terrestrial food chain following an accidental atmospheric emission. The way of transfer of ASTRAL on which the study focused is the transfer of the deposit to milk, via the grazing grass ingestion. The sensitivity of this way of transfer relies on several parameters: interception capacity, yield, cows food rates and dates of setting to grass. Methodology thus consisted in regionalizing these parameters. The software STICS, developed by the INRA (Avignon Centre) was then used to regionalize the values for the retention and the yield. This model proposes a daily follow-up of the leaf area index which has been correlated with interception capacity and with the production of fresh biomass (yield).
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