Strongly nonlinear problem of infinite order with L1L^1 data

In this paper, we prove the existence of solutions for the strongly nonlinear equation of the type $$Au+g(x,u)=f$$ where $A$ is an elliptic operator of infinite order from a functional space of Sobolev type to its dual. $g(x,s)$ is a lower order term satisfying essentially a sign condition on $s$ and the second term $f$ belongs to $L^1(\Omega).

A historical and social overview of the traditional houses: Riad in Fez medina and Hanok in Seoul

Some Korean and Moroccan institutions have taken essential steps to preserve the traditional houses: the Hanoks in Seoul and the Riads in Fez. Previous research on the development and rehabilitation of the traditional dwelling only includes interventions on the structural part and thermal characteristics of the traditional habitat and thus ignores the spatial configuration of the house and its transformation according to the practices and needs of today’s consumers. However, the newly developed structure and construction technology has not yet been developed and has not been activated in the market. In particular, it is causing a social debate about the authenticity of the traditional dwelling structure (Hanok and Riad). This research is to deal with the modernization process in which Hanoks and Riads are newly changing in the 21st century and will tackle the traditional dwelling about the spatial quality and social transition by using space syntax to rethink the spatial layout of the Riad and Hanok for a more flexible, durable, multi-functional space reflecting today’s lifestyle. The main problem would be to answer How to find the balance between the old and the new and how can architecture reflect the culture of a society

The bioclimatic features of traditional heritage architecture: Thermal comfort of the courtyard house in Morocco

The traditional courtyard house has been viewed as a complex regulating system that creates a microclimate that historically worked, and still works, in a passive way to provide acceptable thermal comfort in summer. The internal courtyard is generally described as a positive factor that can moderate extreme outdoor climatic conditions. However, some researchers have shown that the courtyard could become a negative factor from an energy efficiency point of view. For this purpose, this paper is based on a research study exploring the sustainable characteristics of Moroccan traditional housing and their climatic adaptation. The traditional courtyard house model in Rabat-Salé has been selected to analyze the bioclimatic strategies by applying the adaptive comfort approach. The work starts by using tools for climatic design, Mahoney’s tables, Givoni, and Szokolay bioclimatic charts to improve design strategies in terms of thermal comfort in both cities of Rabat and Salé. The results of the analysis are then compared with the characteristics of the Moroccan traditional courtyard houses, to verify if and how those strategies were applied. The important part of this paper concerns the analysis of the thermal behavior of the rooms surrounding the courtyard in the temperate and humid climate of Rabat-Salé. The simulation modeling of the courtyard house model in the medina of Rabat-Salé is carried out to analyze the effectiveness of different parameters to improve the indoor climate during summer and winter, including the façade orientation, the air infiltration, the surroundings, the ceiling height, the walls and roof/ceiling insulation and the shading devices. The findings reveal that Moroccan traditional courtyard houses can incorporate bioclimatic strategies to meet both thermal comfort and energy efficiency in different ways. In general, a strong correlation can be found between constructive and morphological features and climatic contexts

Deux nouvelles espèces de Basidiomycètes pour la flore fongique du Maroc: Conocybe singeriana Hausknecht 1996 et Conocybe fuscimarginata (Murr.) Watling 1969

Des prospections effectuées dans la région de l’étude ont permis de noter des renseignements sur les espèces fongiques rencontrées. Au laboratoire, les critères macroscopiques et microscopiques d’identification de ces espèces ont été déterminés. Deux champignons du genre Conocybe, C. singeriana Hausknecht et C. fuscimarginata (Murr.) Watling (=Conocybe rickenii f. tétrasporique Kühner), ont été inventoriés pour la première fois au Maroc sous Pinus halepensis dans le site minier de Jerada. Les résultats obtenus s’intègrent dans la contribution à la détermination de la diversité fongique du Maroc, qui demeure jusqu’à présent incomplète.Mots clés: Maroc, Champignons, Basidiomycètes, Conocybe singeriana, Conocybe fuscimarginata

Magnetization study of Ni/Ag multilayers

The magnetic properties of Ni/Ag multilayers, prepared by evaporation in ultrahigh vacuum under controlled conditions, have been systematically studied by magnetic measurements. A spin-wave theory has been used to explain the temperature dependence of the magnetization and the approximate values for the bulk exchange interaction Jb and surface exchange interaction JS for various Ni layer thicknesses have been obtained.The magnetic properties of Ni/Ag multilayers, prepared by evaporation in ultrahigh vacuum under controlled conditions, have been systematically studied by magnetic measurements. A spin-wave theory has been used to explain the temperature dependence of the magnetization and the approximate values for the bulk exchange interaction Jb and surface exchange interaction JS for various Ni layer thicknesses have been obtained

Effect of plant growth promoting rhizobacterial (PGPR) inoculation on growth in tomato (Solanum Lycopersicum L.) and characterization for direct PGP abilities in Morocco

Plant Growth promoting rhizobacteria are a heterogeneous group of bacteria that can be found in the rhizosphere, at root surfaces and in association with roots. They benefit plants through Production of plant hormones, such as auxins, asymbiotic N2 fixation, solubilization of mineral phosphates, antagonism against phytopathogenic microorganisms by production of antibiotics, siderophroes, Chitinase and other nutrients ability to effectively colonize roots are responsible for plant growth promotion. An experiment was conducted in the field of National Institute of Agronomic Research of Meknes. Morocco. The experiment was a completely randomized design with six replicates. There were four treatments viz. T1: (control; N0 -PGPR), T2: (N0 +2027-2), T3: (N0 +2066-7) and T4: (N0+2025-1). The results indicated that a remarkable increase in root growth, namely length, the diameter of the rod and the total chlorophyll. A total of three different bacteria colonies were isolated and proceed with in vitro screening for plant growth promoting activities; phosphate solubilization, nitrogen fixation, indole acetic acid (IAA), ammonia production and antimicrobial enzymes (cellulose, chitinase and protease) activity. Among the three bacterial strains, all bacterial strains are able to produce ammonia, IAA production and nitrogen fixation activity, one strain phosphate solubilizing activity, two strain are able to produce cellulase syntheses, Protease activity and Chitinase activity

HIV-1 Tat complexes reveal subunit composition of active P-TEFb and stable association with 7SKsnRNP

International audiencen.

Helminthosporium bicolor, un pathogène foliaire du riz et de Stenotaphrum secundatum au Maroc

Helminthosporium bicolor est isolé pour la première fois au Maroc à partir des lésions foliaires d’Oryza sativa et de Stenotaphrum secundatum. Les plantes de ces deux espèces hôtes inoculées avec deux isolats d’Helminthosporium bicolor ont développé des lésions sporulantes. Les réisolements du pathogène à partir des ces lésions étaient positifs. Les indices de sévérité sur les deux variétés du riz varient entre 43,62% et 52,87%, par contre sur Stenotaphrum secundatum, ils atteignent 65,65% sur les plantes inoculées avec l’isolat R1. La sporulation est maximale sur S. secundatum, elle est de 8,4.105 conidies/cm2 pour l’isolat R1 et varie entre 3,28. 105 et 4,32.105 conidies /cm2 sur les feuilles de deux variétés du riz. © 2013 International Formulae Group. All rights reserved.Mots clés: Helminthosporium bicolor, Oryza sativa, Stenotaphrum secundatum, inoculation, sporulation

KAP1 targets actively transcribed genomic loci to exert pleomorphic effects on RNA polymerase II activity

KAP1 (KRAB-associated protein 1) is best known as a co-repressor responsible for inducing heterochromatin formation, notably at transposable elements. However, it has also been observed to bind the transcription start site of actively expressed genes. To address this paradox, we characterized the protein interactome of KAP1 in the human K562 erythro-leukaemia cell line. We found that the regulator can associate with a wide range of nucleic acid binding proteins, nucleosome remodellers, chromatin modifiers and other transcription modulators. We further determined that KAP1 is recruited at actively transcribed polymerase II promoters, where its depletion resulted in pleomorphic effects, whether expression of these genes was normally constitutive or inducible, consistent with the breadth of possible KAP1 interactors. This article is part of a discussion meeting issue 'Crossroads between transposons and gene regulation'