Mise en place de circuits touristiques thématiques pour le parc du Mont-Bellevue, basés sur un inventaire des attraits naturels et anthropiques

The changing point of views on values linked to the importance now to protect, preserve and promote natural and cultural heritage influence the quality of life environment in which the man evolves. It has directly an influence on lifestyle, more specific on leisure and touristic activities.The general objective of this Master Thesis is to preserve, protect and promote the Mont- Bellevue Park, located at Sherbrooke (Quebec) by applying Sustainable Development Principles. This urban green park has a big area (197 hectares). Indeed, the ecotouristic development propositions applies values and criteria of Sustainable Development. Furthermore, this Master Thesis answers to a lack of studies on the characterization of the natural and human environment of the Mont-Bellevue Park. For Sherbrooke City, the Mont-Bellevue Park represents a green, infrastructure having an environmental, ecological, social and economic usefulness. It is on this notion of Sustainable City Development that is part of the Sustainable Development Concept, that the research hypothesis is based.The Master Thesis integrates a large range of investigations based on human, physical and biophysical data. Mainly, human data come from a research by written questionnaire and interviews to know Mont-Bellevue Park users habits. Physical and biophysical data were acquired by field investigation, photo-interpretation and thematic maps analysis.The treatment and the analysis of these data identify and localize the information that were presented, organized and synthesised by thematic maps. These data were combined with a sustainable criteria base to map potential sites that can be developed (by thematic attractions) and protected in the Park. A Sustainable Development Concept of the sites was elaborated to emphasize the natural and anthropological attractions of the area.The application of Sustainable Development Principles allows respecting the integrity of the natural environment while meeting the needs and the expectations of Mont-Bellevue Park users and visitors. To give access to these sites, we proposed varieties of thematic circuits plans that connect these sites

Mise en place de circuits touristiques thématiques pour le parc du Mont-Bellevue, basés sur un inventaire des attraits naturels et anthropiques

The changing point of views on values linked to the importance now to protect, preserve and promote natural and cultural heritage influence the quality of life environment in which the man evolves. It has directly an influence on lifestyle, more specific on leisure and touristic activities.The general objective of this Master Thesis is to preserve, protect and promote the Mont- Bellevue Park, located at Sherbrooke (Quebec) by applying Sustainable Development Principles. This urban green park has a big area (197 hectares). Indeed, the ecotouristic development propositions applies values and criteria of Sustainable Development. Furthermore, this Master Thesis answers to a lack of studies on the characterization of the natural and human environment of the Mont-Bellevue Park. For Sherbrooke City, the Mont-Bellevue Park represents a green, infrastructure having an environmental, ecological, social and economic usefulness. It is on this notion of Sustainable City Development that is part of the Sustainable Development Concept, that the research hypothesis is based.The Master Thesis integrates a large range of investigations based on human, physical and biophysical data. Mainly, human data come from a research by written questionnaire and interviews to know Mont-Bellevue Park users habits. Physical and biophysical data were acquired by field investigation, photo-interpretation and thematic maps analysis.The treatment and the analysis of these data identify and localize the information that were presented, organized and synthesised by thematic maps. These data were combined with a sustainable criteria base to map potential sites that can be developed (by thematic attractions) and protected in the Park. A Sustainable Development Concept of the sites was elaborated to emphasize the natural and anthropological attractions of the area.The application of Sustainable Development Principles allows respecting the integrity of the natural environment while meeting the needs and the expectations of Mont-Bellevue Park users and visitors. To give access to these sites, we proposed varieties of thematic circuits plans that connect these sites

Single Molecule Magnet Behavior of a Pentanuclear Mn-Based Metallacrown Complex: Solid State and Solution Magnetic Studies

International audienceThe magnetic behavior of the pentanuclear complex of formula MnII(O2CCH3)2[12-MCMnIII(N)shi-4](DMF)6, 1, was investigated using magnetization and magnetic susceptibility measurements both in the solid state and in solution. Complex 1 has a nearly planar structure, made of a central MnII ion surrounded by four peripheral MnIII ions. Solid state variable-field dc magnetic susceptibility experiments demonstrate that 1 possesses a low value for the total spin in the ground state; fitting appropriate expressions to the data results in antiferromangetic coupling both between the peripheral MnIII ions (J = −6.3 cm–1) and between the central MnII ion and the MnIII ones (J′ = −4.2 cm–1). In order to obtain a reasonable fit, a relatively large single ion magnetic anisotropy (D) value of 1 cm–1 was necessary for the central MnII ion. The single crystal magnetization measurements using a microsquid array display a very slight opening of the hysteresis loop but only at a very low temperature (0.04 K), which is in line with the ac susceptibility data where a slow relaxation of the magnetization occurs just around 2 K. In frozen solution, complex 1 displays a frequency dependent ac magnetic susceptibility signal with an energy barrier to magnetization reorientation (E) and relaxation time at an infinite temperature (τo) of 14.7 cm–1 and 1.4 × 10–7 s, respectively, demonstrating the single molecule magnetic behavior in solution

Freely orientable microstructures for designing deformable 3D prints

International audienceNature offers a marvel of astonishing and rich deformation behaviors. Yet, most of the objects we fabricate are comparatively rather inexpressive, either rigid or having simple homogeneous behaviors when interacted with. In this work, we focus on controlling how a 3D printed volume reacts under large deformations. We propose a novel microstructure that is extremely rigid along a transverse direction, while being comparatively very flexible in the orthogonal plane. By allowing free gradation of orientation within the object, the microstructure can be designed such that, under deformation, some distances in the volume are preserved while others freely change. This allows to control the way the volume reshapes when deformed, and results in a wide range of design possibilities. Other gradations are possible, such as locally and progressively canceling the directional effect.To synthesize the structures we propose an algorithm that builds upon procedural texturing. It produces a cellular geometry that can be fabricated reliably despite 3D printing walls at a minimal thickness, for maximal flexibility. The synthesis algorithm is efficient, and scales to large volumes

Cyanide-bridged NiCr and alternate NiFe–NiCr magnetic ultrathin films on functionalized Si(100) surface

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Sequential Growth in Solution of NiFe Prussian Blue coordination network nanolayers on Si(100) surfaces

International audienc

Growth and density control of nanometric nickel–iron cyanide-bridged objects on functionalized Si(100) surface

International audienceIsolated nanometric objects of the nickel–iron cyanide-bridged coordination network are obtained by a sequential growth on “molecular seeds” anchored on Si(100) surfaces. Control of the density and the size of the nano-objects is achieved by imposing a growth process without side nucleation

Single Molecule Magnet Behavior of a Pentanuclear Mn-Based Metallacrown Complex: Solid State and Solution Magnetic Studies

The magnetic behavior of the pentanuclear complex of formula Mn^II(O₂CCH₃)₂[12-MC_Mn^III(N)shi-4](DMF)₆, <b>1</b>, was investigated using magnetization and magnetic susceptibility measurements both in the solid state and in solution. Complex <b>1</b> has a nearly planar structure, made of a central Mn^II ion surrounded by four peripheral Mn^III ions. Solid state variable-field dc magnetic susceptibility experiments demonstrate that <b>1</b> possesses a low value for the total spin in the ground state; fitting appropriate expressions to the data results in antiferromangetic coupling both between the peripheral Mn^III ions (<i>J</i> = −6.3 cm^–1) and between the central Mn^II ion and the Mn^III ones (<i>J</i>′ = −4.2 cm^–1). In order to obtain a reasonable fit, a relatively large single ion magnetic anisotropy (<i>D</i>) value of 1 cm^–1 was necessary for the central Mn^II ion. The single crystal magnetization measurements using a microsquid array display a very slight opening of the hysteresis loop but only at a very low temperature (0.04 K), which is in line with the ac susceptibility data where a slow relaxation of the magnetization occurs just around 2 K. In frozen solution, complex <b>1</b> displays a frequency dependent ac magnetic susceptibility signal with an energy barrier to magnetization reorientation (<i>E</i>) and relaxation time at an infinite temperature (τ_o) of 14.7 cm^–1 and 1.4 × 10^–7 s, respectively, demonstrating the single molecule magnetic behavior in solution