Modalités et techniques modernes du diagnostic expérimental de la peste bovine

Les auteurs font le point sur les techniques de diagnostic susceptibles d'éradiquer la peste bovine d'Afrique. Ils passent en revue les étapes d'un bon diagnostic expérimental : Les méthodes de prélèvement, le choix des réactions et leur conduite, la réalisation du diagnosti

Troubleshooting Time-Dependent Density-Functional Theory for Photochemical Applications: Oxirane

The development of analytic-gradient methodology for excited states within conventional time-dependent density-functional theory (TDDFT) would seem to offer a relatively inexpensive alternative to better established quantum-chemical approaches for the modeling of photochemical reactions. However, even though TDDFT is formally exact, practical calculations involve the use of approximate functionals, in particular the TDDFT adiabatic approximation, whose use in photochemical applications must be further validated. Here, we investigate the prototypical case of the symmetric CC ring opening of oxirane. We demonstrate by direct comparison with the results of high-quality quantum Monte Carlo calculations that, far from being an approximation on TDDFT, the Tamm-Dancoff approximation (TDA) is a practical necessity for avoiding triplet instabilities and singlet near instabilities, thus helping maintain energetically reasonable excited-state potential energy surfaces during bond breaking. Other difficulties one would encounter in modeling oxirane photodynamics are pointed out but none of these is likely to prevent a qualitatively correct TDDFT/TDA description of photochemistry in this prototypical molecule.Comment: 19 pages, 17 figures, submitted to the Journal of Chemical Physic

The protective function of meaning of life on life satisfaction among Chinese students in Australia and Hong Kong: a cross-cultural comparative study.

OBJECTIVE: The authors compared the predictive effects of acculturative stressors and meaning of life on life satisfaction between Chinese students in Australia and in Hong Kong. PARTICIPANTS: In 2006, the researchers recruited 606 Chinese students studying abroad at the University of Melbourne in Australia and at 6 universities in Hong Kong. METHODS: Participants completed a questionnaire that included measures of acculturative stressors, meaning of life, life satisfaction, and demographic information. RESULTS: The Australian sample experienced a significantly higher level of acculturative stressors than did the Hong Kong sample, but life satisfaction did not differ significantly between the 2 samples. Meaning of life had a strong positive contribution and acculturative stressors had a negative contribution in predicting life satisfaction in both samples. Meaning of life partially mediated the relationship between acculturative stressors and life satisfaction in both samples. CONCLUSIONS: The authors discuss the theoretical and practical implications for Chinese students studying abroad.published_or_final_versio

Energy deposited by neutrons and gamma rays in the cryogenic system of SISSI

International audienc

Advanced Marketing Finance 4B

Exam paper for second semeste

Un déterminant de l'innovation technique en agriculture : les coordinations sur le travail dans la production bananière

The growth of the international market of the horticultural products is made possible by the globalization of an intensive mode of production in synthetic products which mobilizes salaried workers. In the Antilles changes in technological trajectories enables the consideration of other modes of production. This article brings to light how the technical innovation allowing a decrease in the necessity to use pesticides is dependent on an adaptation of the coordination in the mobilization of the salaried work. For this purpose we compare two systems of the use of manual labour between Martinique and Guadeloupe by widening on certain aspects in the transnational. The comparison is based on the characterization of these systems in which manual labour is used and the indicators of performance of the sectors of banana as well as on the adaptation of the technical changes. ...French Abstract : La croissance du marché international des produits horticoles se réalise par la globalisation d'un mode de production intensif en produits de synthèses qui mobilise une main d'oeuvre salariée. Dans les Antilles des changements de trajectoires technologiques permettent d'envisager d'autres modes de production. Cet article met en évidence comment l'innovation technique permettant de diminuer le recours aux pesticides est tributaire d'une adaptation des coordinations dans la mobilisation du travail salarié. Pour cela nous caractérisons les systèmes d'emploi de la main d'oeuvre salarié entre différentes origines et leurs impact sur des indicateurs de performance des filières de banane et d'adaptation des changements techniques.BANANA; WORK; INNOVATION; PESTICIDE; ANTILLES

Developing fencing policies in dryland ecosystems

The daily energy requirements of animals are determined by a combination of physical and physiological factors, but food availability may challenge the capacity to meet nutritional needs. Western gorillas (Gorilla gorilla) are an interesting model for investigating this topic because they are folivore-frugivores that adjust their diet and activities to seasonal variation in fruit availability. Observations of one habituated group of western gorillas in Bai-Hokou, Central African Republic (December 2004-December 2005) were used to examine seasonal variation in diet quality and nutritional intake. We tested if during the high fruit season the food consumed by western gorillas was higher in quality (higher in energy, sugar, fat but lower in fibre and antifeedants) than during the low fruit season. Food consumed during the high fruit season was higher in digestible energy, but not any other macronutrients. Second, we investigated whether the gorillas increased their daily intake of carbohydrates, metabolizable energy (KCal/g OM), or other nutrients during the high fruit season. Intake of dry matter, fibers, fat, protein and the majority of minerals and phenols decreased with increased frugivory and there was some indication of seasonal variation in intake of energy (KCal/g OM), tannins, protein/fiber ratio, and iron. Intake of non-structural carbohydrates and sugars was not influenced by fruit availability. Gorillas are probably able to extract large quantities of energy via fermentation since they rely on proteinaceous leaves during the low fruit season. Macronutrients and micronutrients, but not digestible energy, may be limited for them during times of low fruit availability because they are hind-gut fermenters. We discuss the advantages of seasonal frugivores having large dietary breath and flexibility, significant characteristics to consider in the conservation strategies of endangered species

The Quality of Nutmeg Seeds and Mace From North Sulawesi

Nutmeg seeds and mace quality are important export commodity from North Sulawesi. Recently, Indonesian nutmeg seeds and mice were contaminated by aflatoxin which was emerged in the storage. This resulted in decrease in price and demand of nutmeg especially from European countries. Aflatoksin scientifically proven can cause cancer. Thus, the products should follow the quality control test to insure the safety and health of consumers to be exported to European countries. This study aimed to know the nutmeg seeds and mace quality using descriptive statistic method. The result showed that 77 nutmeg seeds and 14 mace exports sample tested in 2010 - 2013 qualified for standard quality according to Indonesian National Standard (SNI). However, those samples were contained Aflatoxin ranged between 1.67ppb to 2.00 ppb. This indicated that SNI was no longer able to determine the quality of the nutmeg seeds and mace for export

Salvation according to the Heidelberg Catechism

The Heidelberg Catechism has been part of the Reformed Confessional tradition for over 400 years. It has helped to shape and form generations of Reformed believers. The question however can be raised if the model of salvation that features in the Catechism is still relevant today? In the light of different contexts this article looks at the questions in the Heidelberg Catechism concerning the explanation of our salvation and reads this judicial model against other Christian understandings in the Catholic, Baptist and Orthodox tradition. The dialogue continues with the work of Ellen Charry that reminds us of the formative role that theology had in the works of the Early Church fathers and asks what the content and role of catechism are today and if we can still use this document fruitfully in our formation of young people