Acoustic and mechanical response of reservoir rocks under variable saturation and effective pressure

We investigate the acoustic and mechanical properties of a reservoir sandstone saturated by two immiscible hydrocarbon fluids, under different saturations and pressure conditions. The modeling of static and dynamic deformation processes in porous rocks saturated by immiscible fluids depends on many parameters such as, for instance, porosity, permeability, pore fluid, fluid saturation, fluid pressures, capillary pressure, and effective stress. We use a formulation based on an extension of Biot's theory, which allows us to compute the coefficients of the stress-strain relations and the equations of motion in terms of the properties of the single phases at the in situ conditions. The dry-rock moduli are obtained from laboratory measurements for variable confining pressures. We obtain the bulk compressibilities, the effective pressure, and the ultrasonic phase velocities and quality factors for different saturations and pore-fluid pressures ranging from normal to abnormally high values. The objective is to relate the seismic and ultrasonic velocity and attenuation to the microstructural properties and pressure conditions of the reservoir. The problem has an application in the field of seismic exploration for predicting pore-fluid pressures and saturation regimes

The role of agency in the emergence and development of social innovations in rural areas. Analysis of two cases of social farming in Italy and the Netherlands

Social innovation is considered a relevant concept to tackle societal challenges and needs in rural areas and to promote smart, inclusive and sustainable growth. The characterising sector of rural areas is agriculture; therefore, the focus of this paper is on social innovation in the field of social farming. Among the many factors leading to the emergence and development of social innovation, agency has been considered relevant in the literature on transformability and transformative social innovation as it is the ability to turn contextual difficulties into opportunities for social innovation and for inclusive growth. This paper proposes an evaluation framework to assess the different dimensions of agency by triangulating quantitative with qualitative data and by using indicators. This paper adopts a case study approach, analysing two cases of social farming in Italy and the Netherlands. The results show that the social innovation idea and the resilience of the agency are among the most relevant dimensions for the emergence and development of social innovations. Finally, this paper discusses the three most relevant factors for agency to lead to social innovation: idea and embeddedness of the agency, transformability of the context through agencys resilience, and agency as catalyst for empowerment

PULSATILE FLOW OF VISCOELASTIC FLUIDS IN TUBES

In this study, we present an experimental investigation of the flow structure changes in non-Newtonian fluids subjected to periodic variable fluxes inside rigid-walled tubes. We employ a liquid mixture composed of water and polyacrylamide to account for various rheological properties. We obtain the velocity fields for each experimental case using the Particle Image Velocimetry (PIV) technique and we analyze their variations based on different properties of the pulsatile input signal. Reynolds numbers between 200 and 350 are considered, with a 10 % variation in amplitude

Teriparatide increases the maturation of circulating osteoblast precursors

This study shows that teriparatide promotes the circulating osteoblast (OB) precursor degree of maturation in patients affected by postmenopausal osteoporosis. Anabolic treatment with teriparatide has proven effective for the therapy of postmenopausal osteoporosis and significantly reduces the risk of non-vertebral fragility fractures. The aim of this study was to investigate the effect of teriparatide on circulating OB precursors. We evaluated by flow cytometry and real-time PCR the expression of OBs typical markers in peripheral blood mononuclear cells during treatment with teriparatide plus calcium and vitamin D, raloxifene plus calcium and vitamin D or calcium and vitamin D alone at various time points. Serum bone alkaline phosphatase and osteocalcin (OC) were measured as markers of bone turnover. Our results show that circulating OB precursors are more numerous and more immature in patients affected by fragility fractures than in osteoporotic patients without fractures. We also show that teriparatide treatment increases the expression of alkaline phosphatase and of OC in OB precursors; thus, it increases their degree of maturation. We suggest that teriparatide acts as anabolic agents also by promoting the maturation of OB precursors

Reconstructive social innovation cycles in women-led initiatives in rural areas

Abstract Social innovations can tackle various challenges related to gender equity in rural areas, especially when such innovations are initiated and developed by women themselves. We examine cases located in rural areas of Canada, Italy, Lebanon, Morocco, and Serbia, where women are marginalized by gender roles, patriarchal values, male dominated economy and policy, and lack of opportunities for education and employment. Our objective is to analyze five case studies on how women-led social innovation processes can tackle gender equity related challenges manifested at the levels of everyday practice, institutions, and cognitive frames. The analyses are based on interviews, workshops, literature screening, and are examined via the qualitative abductive method. Results summarize challenges that rural women are facing, explore social innovation initiatives as promising solutions, and analyze their implications on gender equity in the five case studies. Based on our results we propose a new concept: reconstructive social innovation cycle. It refers to is defined as cyclical innovation processes that engage women via civil society initiatives. These initiatives reconstruct the existing state of affairs, by questioning marginalizing and discriminative practices, institutions, and cognitive frames that are often perceived as normal. The new concept helps with to assessing the implications that women-led social innovations have for gender equity

Set of methods to assess SI implications at different levels: instructions for WPs 5 and 6. Deliverable D4.2, Social Innovation in Marginalized Rural Areas Project (SIMRA), Demonstrator to the European Commission.

The report (Deliverable 4.2 of SIMRA project) presents a preliminary set of integrated methods for measuring social innovation and its impacts on the components of territorial capital for use in Work Package 5 (case studies), and evaluating the policy implications of social innovation at different levels for use in Work Package 6 (policy analysis). It provides the framework to guide evaluation of social innovation in the case studies, explaining the various elements and components of social innovation in marginalised rural areas; it provides an overview of the approach to evaluation, in terms of scale of application, focus of the analysis, criteria of evaluation, methods and tools; it provides the list of questions to be used in structured and semi-structured interviews and other data collection tools; and, finally, it provides instructions for testing the use of the proposed methods and tools in a few, selected pioneer case studies and policy analysis (i.e. it provides guidance to SIMRA Work Packages 5 and 6)