Sainville – Pointe à Godeau 1 et 2

Ces deux opérations de diagnostics, portant sur des parcelles attenantes, concernent le projet d’aménagement d’un parc de stockage de véhicules dans la ZA du Godeau au lieu-dit Pointe à Godeau à Sainville (Eure-et-Loir). L’emprise globale de deux prescriptions a porté sur une surface de 110 884 m2. Ces terrains se situent sur le versant sud-ouest d’une petite vallée actuellement sèche qui apparaît dans la continuité de l’actuelle vallée de l’Aunay, localisée au nord-ouest du secteur considéré..

Thivars – La Sente aux Ânes

L’opération de diagnostic réalisée au lieu-dit la Sente aux Ânes à Thivars (Eure-et-Loir) a concerné une surface de 3,3 ha située à environ 500 m au sud de la vallée de l’Eure. Cette évaluation a permis de reconnaître des indices d’occupations humaines s’échelonnant du Néolithique à l’époque contemporaine. Trois occupations principales, documentées tant par des traces au sol que par des vestiges mobiliers, ont été identifiées. Deux correspondent à des périodes de la Protohistoire et une à un ..

Arrou – La Brunetière Sud

Cette opération de diagnostic concerne le projet d’aménagement d’un lotissement au lieu-dit la Brunetière Sud sur la commune déléguée d’Arrou (Eure-et-Loir). L’emprise globale de la prescription a porté sur une surface de 12 829 m2. Le terrain évalué, localisé sur un plateau, surplombe la vallée de l’Yerre. Fig. 1 – Plan général DAO : CD 28. Les observations géomorphologiques ont permis de constater la présence d’une couverture superficielle de plus de 2 m d’épaisseur, structurée par au moin..

Preparation and optical properties of GA(x)IN(1-x)P alloys

The solution crystallization method was used to obtain Ga(z)In(1-x)P alloys for all values of x desired between zero and 1. The method of preparation makes it possible to crystallize the solid at a constant temperature. The points obtained by cathodoluminescence are nearly in straight lines. The optical absorption thresholds are confirmed in the results and make it possible to define the nature of the transitions except when x is in the neighborhood of 0.65. These determinations agree with those of Hilsum and Porteus (1968), but are not in agreement with those obtained by Lorenz et al, (1968)

The magnetic interactions in spin-glasslike Ge/1-x-y/Sn/x/Mn/y/Te diluted magnetic semiconductor

We investigated the nature of the magnetic phase transition in the Ge/1-x-y/Sn/x/Mn/y/Te mixed crystals with chemical composition changing in the range of 0.083 < x < 0.142 and 0.012 < y < 0.119. The DC magnetization measurements performed in the magnetic field up to 90 kOe and temperature range 2-200 K showed that the magnetic ordering at temperatures below T = 50 K exhibits features characteristic for both spin-glass and ferromagnetic phases. The modified Sherrington - Southern model was applied to explain the observed transition temperatures. The calculations showed that the spin-glass state is preferred in the range of the experimental carrier concentrations and Mn content. The value of the Mn hole exchange integral was estimated to be J/pd/ = 0.45+/-0.05 eV. The experimental magnetization vs temperature curves were reproduced satisfactory using the non-interacting spin-wave theory with the exchange constant J/pd/ values consistent with those calculated using modified Sherrington - Southern model. The magnetization vs magnetic field curves showed nonsaturating behavior at magnetic fields B < 90 kOe indicating the presence of strong magnetic frustration in the system. The experimental results were reproduced theoretically with good accuracy using the molecular field approximation-based model of a disordered ferromagnet with long-range RKKY interaction.Comment: 9 pages, 6 figure

Organisation territoriale et socio-économique au Néolithique final dans la région du Grand-Pressigny: caractérisation des provenances des matériaux céramiques

National audienceIn and around Le Grand-Pressigny (Indre-et-Loire, France), a petrographic study was implementedon 92 ceramic samples from the Final Neolithic sites of Le Petit-Paulmy and Bergeresse (Abilly).Analyses showed that the sediments used were extracted from local sources: Claise and Creusealluvium, local substrate and loessic silts. Quantitatively, the study showed that almost all the ceramicmaterials in Bergeresse and more than half of those in Le Petit-Paulmy come from the valley of theCreuse. The mineralogical compositions of three samples from Le Petit-Paulmy, including one ofunusual form, indicate sources from an exogenous region, the Massif Central (perhaps the alluviumof the Loire or the Allier). These results show the important role played by the valley of the Creusein the territorial organisation of Le Grand-Pressigny. This study therefore makes an originalcontribution to the debate on flint exploitation in this region. These ceramic data are expected to offernew interpretative models concerning the socio-economic organisation of local Neolithic communities.Dans la région du Grand-Pressigny (Indre-et-Loire, France), une étude pétrographique a été conduite sur 92 échantillons céramiques du Néolithique final provenant des sites du Petit-Paulmy et de Bergeresse (Abilly), respectivement situés dans la vallée de la Claise et de la Creuse. Les analyses ont montré que les sédiments utilisés provenaient majoritairement de sources locales, correspondant aux alluvions de la Claise, de la Creuse, au substrat local et à des limons loessiques. Quantitativement, l'étude a montré que presque tous les matériaux céramiques de Bergeresse et plus de la moitié de ceux du Petit-Paulmy proviennent de la vallée de la Creuse. Les compositions minéralogiques de trois échantillons du Petit-Paulmy, dont un concernant une forme particulière, indiquent des provenances exogènes, du Massif central (alluvions de la Loire ou de l'Allier). Ces résultats montrent l'importance du rôle joué par la vallée de la Creuse dans l'organisation territoriale de la région du Grand-Pressigny. L'étude des céramiques apporte une contribution originale dans le débat sur l'organisation socioéconomique de l'exploitation du silex du Grand-Pressigny et devrait permettre de proposer de nouveaux modèles interprétatifs

Innovative Technologies for District Heating and Cooling: InDeal Project

The paper discusses the outcomes of the conference organized by the InDeal project. The conference took place on 12 December 2018 in Montpellier as part of the EnerGaia energy forum 2018. A holistic interdisciplinary approach for district heating and cooling (DHC) networks is presented that integrates heterogeneous innovative technologies from various scientific sectors. The solution is based on a multi-layer control and modelling framework that has been designed to minimize the total plant production costs and optimize heating/cooling distribution. Artificial intelligence tools are employed to model uncertainties associated with weather and energy demand forecasts, as well as quantify the energy storage capacity. Smart metering devices are utilized to collect information about all the crucial heat substations’ parameters, whereas a web-based platform offers a unique user environment for network operators. Three new technologies have been further developed to improve the efficiency of pipe design of DHC systems: (i) A new sustainable insulation material for reducing heat losses, (ii) a new quick-fit joint for an easy installation, and (iii) a new coating for reducing pressure head losses. The results of a study on the development and optimization of two energy harvesting systems are also provided. The assessment of the environmental, economic and social impact of the proposed holistic approach is performed through a life cycle analysis. The validation methodology of the integrated solution is also described, whereas conclusions and future work are finally given

Successful treatment of fusarium solani ecthyma gangrenosum in a patient affected by leukocyte adhesion deficiency type 1 with granulocytes transfusions

<p>Abstract</p> <p>Background</p> <p>Ecthyma gangrenosum (EG) manifests as a skin lesion affecting patients suffering extreme neutropenia and is commonly associated with <it>Pseudomonas aeruginosa </it>in immunocompromised patients. Leukocyte adhesion deficiency I (LAD I) which count among primary immunodeficiency syndromes of the innate immunity, is an autosomal recessive disorder characterized in its severe phenotype by a complete defect in CD18 expression on neutrophils, delayed cord separation, chronic skin ulcers mainly due to recurrent bacterial and fungal infections, leucocytosis with high numbers of circulating neutrophils and an accumulation of abnormally low number of neutrophils at sites of infection.</p> <p>Case Presentation</p> <p>We report at our knowledge the first case of a child affected by LAD-1, who experienced during her disease course a multi-bacterial and fungal EG lesion caused by <it>fusarium solani</it>. Despite targeted antibiotics and anti-fungi therapy, the lesion extended for as long as 18 months and only massive granulocytes pockets transfusions in association with G-CSF had the capacity to cure this lesion.</p> <p>Conclusion</p> <p>We propose that granulocytes pockets transfusions will be beneficial to heal EG especially in severely immunocompromised patients.</p

Propriétés du semi-conducteur InSb

The properties of the semi-conductor InSb are reviewed, paying special attention to the uncertainty prevailing about two important features : the exact value of the electron effective mass and the mechanism of scattering of the electrons. The theory of the thermoelectric and thermomagnetic effects in InSb is then given and experimental results are presented which support the idea that scattering by the optical lattice vibrations is the predominant mechanism.On fait le point des propriétés du composé semi-conducteur InSb en mettant en lumière l'incertitude qui existe sur deux points importants : la valeur exacte de la masse efficace des électrons d'une part, et leur mode de dispersion d'autre part. On expose la théorie des effets thermoélectriques et thermomagnétiques dans InSb et on donne des résultats expérimentaux qui tendent à prouver que le mécanisme prédominant de dispersion est la dispersion par les vibrations optiques du réseau