Sadefo Kamdem J.,University Of La Guyane |
Sadefo Kamdem J.,Montpellier University |
Nsouadi A.,Montpellier University |
Terraza M.,Montpellier University
Environmental Modeling and Assessment | Year: 2016
In this paper, interactions or co-movement between the CER and EUA futures prices are examined in order to shed light on the dependency between the European Union Emissions Trading Scheme (EU ETS) and the clean development mechanism (MDP). Our analysis uses the wavelet method to model the correlation between CER and EUA in the time-frequency domain. It highlights the impact of different investors (according to their investment horizons) on the co-movement between the CER and EUA prices, and therefore, the behavior of individual investors as speculators, arbitrageurs, and hedgers on European allowance and CDM credits cumulatively. In this vein, we analyze according to the frequency intervals, price convergence, identification of potential factors that could explain a difference in futures prices, and structural changes in the EUA and CER prices. The application is made using daily EUA’s and CER’s prices data. © 2015, Springer International Publishing Switzerland.
Scotto C.I.,University of Nice Sophia Antipolis |
Burger P.,University of Nice Sophia Antipolis |
Khodjet el Khil M.,Guyaromes |
Ginouves M.,University Of La Guyane |
And 5 more authors.
Journal of Essential Oil Research | Year: 2016
This study reports the chemical composition of the essential oil of Nashia inaguensis Millsp. organically cultivated in French Guiana. This essential oil was examined by a combination of GC/FID and GC-MS techniques. A total of thirty-one components accounting for 97% of the total GC/FID chromatogram were identified. The most abundant ones were carvacrol (23.1%), p-cymene (18.7%), γ-terpinene (14.6%), thymol methyl ether (10.3%), thymol (8.3%), trans-β-caryophyllene (8.0%) and myrcene (2.3%). The essential oil of N.inaguensis was tested for the first time for antifungal and antiparasitic activities against strains of several Candida spp. and Leishmania guyanensis respectively: the strong antimicrobial activity of this essential oil was confirmed in vitro by the definition of MIC values ranging from 125 μg/mL to 500 μg/mL according to the Candida species tested, while the anti-Leishmania activity assessed by the definition of an IC50 value seem negligible. © 2016 Taylor & Francis
Epelboin L.,Center hospitalier Andree Rosemon |
Epelboin L.,University Of La Guyane |
Douine M.,University Of La Guyane |
Douine M.,French Institute of Health and Medical Research |
And 9 more authors.
Bulletin de la Societe de Pathologie Exotique | Year: 2016
Started in 2015 in Brazil, an outbreak linked to a little known arbovirus, Zika virus spread throughout Latin America. This virus, considered until recently as responsible of only mild symptoms, made mention of previously unsuspected complications, with severe neurological manifestations in adults and malformations of the central nervous system, including microcephaly, in newborns of mother infected during the pregnancy. While the continent is more accustomed to the succession of arbovirus epidemics, suspected complications and the many unknowns keys of the latter arriving raise many public health issues. French Guiana, a French territory located in the north-east of the continent, combines both European level of resources and climate and issues specific to the Amazon region and Latin America. We discuss here the issues for 2016 Zika virus epidemic in our region, many of them are generalizable to neighboring countries. © 2016, Springer-Verlag France.
Performance Testing of PCR Assay in Blood Samples for the Diagnosis of Toxoplasmic Encephalitis in AIDS Patients from the French Departments of America and Genetic Diversity of Toxoplasma gondii: A Prospective and Multicentric Study
Ajzenberg D.,University of Limoges |
Lamaury I.,Center Hospitalier University Of Pointe tre |
Demar M.,University Of La Guyane |
Demar M.,Center Hospitalier Of Cayenne |
And 14 more authors.
PLoS Neglected Tropical Diseases | Year: 2016
Background: Toxoplasmic encephalitis in patients with AIDS is a life-threatening disease mostly due to reactivation of Toxoplasma gondii cysts in the brain. The main objective of this study was to evaluate the performance of real-time PCR assay in peripheral blood samples for the diagnosis of toxoplasmic encephalitis in AIDS patients in the French West Indies and Guiana. Methodology/Principal Findings: Adult patients with HIV and suspicion of toxoplasmic encephalitis with start of specific antitoxoplasmic therapy were included in this study during 40 months. The real-time PCR assay targeting the 529 bp repeat region of T. gondii was performed in two different centers for all blood samples. A Neighbor-Joining tree was reconstructed from microsatellite data to examine the relationships between strains from human cases of toxoplasmosis in South America and the Caribbean. A total of 44 cases were validated by a committee of experts, including 36 cases with toxoplasmic encephalitis. The specificity of the PCR assay in blood samples was 100% but the sensitivity was only 25% with moderate agreement between the two centers. Altered level of consciousness and being born in the French West Indies and Guiana were the only two variables that were associated with significantly decreased risk of false negative results with the PCR assay. Conclusion/Significance: Our results showed that PCR sensitivity in blood samples increased with severity of toxoplasmic encephalitis in AIDS patients. Geographic origin of patients was likely to influence PCR sensitivity but there was little evidence that it was caused by differences in T. gondii strains. Trial Registration: ClinicalTrials.gov NCT00803621 © 2016 Ajzenberg et al.