L’instabilité dynamique pendant le Toarcien dans le Moyen Atlas (Maroc): mise en évidence de glissements synsédimentaires dans le synclinal de Bou Angar

During the Toarcian, shelves undergo block-faulting with mechanisms of tilting. It results the break up of the Middle Atlas basin in subsident sectors separated by resistant ridges. This device is highlighted by strong variations of facies, more or less extended lacunar zones, reefs aligned on the ridges and of synsedimentary tectonics structures. Within the framework of mapping survey carried out in the south-west of Middle Atlas, a meticulous prospection of Bou Angar synclinal allowed the description of a new outcrop of Toarcian. This one offers good examples of extensional structures and bio-accumulations. These data, supplemented by other witnesses of the dynamic instability in the rest of the Middle Atlas, permit to propose a paleogeographic map of the Middle Atlas basin during the Toarcian

Knowledge, attitudes and practices with regard to the presence, transmission, impact, and control of cystic echinococcosis in Sidi Kacem Province, Morocco

BACKGROUND: This study is a component of a large research project on five major neglected zoonotic diseases (NZDs) including cystic echinococcosis and was undertaken in the Province of Sidi Kacem over a period of four years (April 2009-March 2013). METHODS: Questionnaires were administered at community level in a total of 27 communes and visits were made to all of the 10 abattoirs situated in the Province, to collect qualitative data on determinants of transmission for disease in humans and animals. More specifically, community knowledge, attitudes and practices related to cystic echinococcosis were assessed, as well as the extent to which local customs and behaviours may promote transmission. Abattoir infrastructure and practices, and their role in perpetuating disease transmission were also critically evaluated. RESULTS: The results show that only 50 % of people have heard of the disease, and of those, only 21 % are aware of the dog’s role in disease transmission. Sixty-seven per cent of respondents stated that dogs are fed ruminant organs deemed unfit for human consumption. Owned dogs have access to the family home, including the kitchen, in 39 % of households. The extent of this close proximity between humans and animals is even more pertinent when one considers that dogs are omnipresent in the community, with an average of 1.8 dogs owned per household. The unrestricted access of dogs to abattoirs is a huge issue, which further promotes disease transmission. CONCLUSION: This study would suggest that the high prevalence of cystic echinococcosis in humans and animals in Morocco is largely due to three factors: 1) abundance of dogs 2) engagement in risky behaviour of the local population and 3) poor abattoir infrastructure and practices. This has serious implications in terms of the socio-economic impact of the disease, especially for rural poor communities. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (doi:10.1186/s40249-015-0082-9) contains supplementary material, which is available to authorized users

Chemical Additives for Corrosion Control in Desalination Plants

The addition of chemical additives has been considered as a standard operation in water treatment systems. This chapter discusses the chemical additives used for the control of corrosion in desalination systems. Specifically, corrosion inhibitors for various metallurgies, biocides, and oxygen scavengers are covered. The pros and cons of the additive chemicals have been highlighted. The need to utilize green corrosion inhibitors based on plants and ionic liquids materials have been emphasized. This class of materials are environmentally friendly, cheap, and readily available

Analysis of Infrared and Raman-Spectra of 116SnH4 in the 1900 cm-1 Region - Study of the 1000, 0010 Interacting States

0022-285

Analysis of the Fourier transform infrared spectrum of the stannane species

Monoisotopic stannane 116SnH4 has been investigated at room temperature in the 600–850 cm-1 and 1270–1600 cm-1 regions by FTIR spectroscopy with an effective resolution of $2.1 \times 10^{-3}$ cm-1 and $2.0 \times 10^{-3}$ cm-1 respectively. The simultaneous analysis of infrared transitions of both the bending triad and the hot band {bending triad} minus {bending dyad}, enabled us to determine 26 parameters for the (2$\nu _{2})$ band and the combination band ($\nu _{2}+\nu _{4})$. The standard deviation of the fit was about $1.5\times 10^{-3}$ cm-1. In this analysis, we have used, for the bending triad, a Hamiltonian developed to the fourth order of approximation. 163 observed transitions for the hot band and most observed transitions for the bending triad spectrum, were assigned to the two bands 2$\nu _{2}$ and ($\nu _{2}+\nu _{4})$, up to J=9. In the fit of the Hamiltonian parameters, we have used for the ground state and for the fundamentals $\nu _{2}$ and $\nu _{4}$, the parameters determined by Brunet, Pierre, and Bürger [J. Mol. Spectrosc. 140, 237 (1990)]

Analysis of the hot band of stannane

The FTIR spectrum of monoisotopic stannane 116SnH4 has been recorded in the 600–850 cm-1 range, with the Bruker 120 HR interferometer at Giessen, Germany. The resolution was $2.1\times10^{-3}$ cm-1. The analysis of infrared transitions in this region enabled Brunet et al. [CITE] to assign many lines to the bending dyad $\nu_2/\nu_4$. However, several lines in this spectrum were found to be unassigned. In a recent work [CITE], we have analysed the infrared spectrum of stannane in the bending triad region at 1400 cm-1. The results obtained enabled us to assign directly, for the spectrum in the region 600–850 cm-1, 163 of the observed transitions to the hot band {bending triad} minus {bending dyad} up to J=9. These transitions were combined to the infrared data corresponding to the bending triad ($2\nu_2,\nu_2+\nu_4,2\nu_4$), to refine a set of Hamiltonian parameters for the two bands $2\nu_2$ and ($\nu_2+\nu_4$) [CITE]

Evolution tectono-sédimentaire du Nord-Est du Maroc au cours du Trias supérieur : apport des données microtectoniques

Tectonic-sedimentary evolution of North-Eastern Morocco during Upper Trias : Microtectonic evidences. North-eastern Morocco occupies a hinge zone between two evaporitic basins of the Tethys margin : the Guercif basin in the west and the High Plateau basin in the south. The study of tectonic-sedimentary structures (brittle and viscoplastic strutures) enables to reconstruct and illustrate the control of extensional tectonics on sedimentation. Quantitative analysis led us to distinguish a major state of extensive stress, NNW-SSE orientes (with ENE-WSW permutation of stress), and an other NW-SE extension. The evolution of stress trends determinate here in is correlated with the sedimentary organisation during the Ladinian to Norian. This evolution occured before crustal extension in the Atlantic and Atlasic Moroccan domains.Les formations triasiques du Maroc nord oriental occupent une position charnière entre deux bassins évaporitiques profonds d'obédience téthysienne : le bassin de Guercif à l'ouest et le bassin des Hauts Plateaux au sud. L'étude des structures synsédimentaires (déformation cassante et déformation viscoplastique) met en évidence un contrôle étroit de la tectonique extensive sur la sédimentation. L'analyse quantitative sur des populations de failles à jeu synsédimentaire permet de définir un état de contrainte majeur distensif NNW-SSE (avec permutation de contrainte ENE-WSW) et une distension NW-SE. L'évolution des directions d'extension est comélable avec l'organisation de la sédimentation du Ladinien au Norien. Elle est plus précoce que celle accompagnant le rifting atlasique et atlantique marocain.Tabyaoui H., Ait Brahim Lahsen, Tahiri Abdelfattah, Chotin P. Evolution tectono-sédimentaire du Nord-Est du Maroc au cours du Trias supérieur : apport des données microtectoniques. In: Géologie Méditerranéenne. Tome 26, numéro 3-4, 1999. pp. 231-243

Analysis of Infrared and Raman-Spectra of 116SnH4 in the 1900 cm-1 Region - Study of the 1000, 0010 Interacting States

0022-285