Analysis of the potential contamination risk of groundwater resources circulating in areas with anthropogenic activities

The area investigated is located in the province of Brindisi (Italy). It is a generally flat area separated from the nearby carbonatic plateau of the Murgia by quite indistinct and high fault scarps. As regards the geological features, carbonatic basement rocks and post-cretaceous terrains made up of calabrian calcarenites and middle-upper Pleistocenic marine terraced deposits can be distinguished. <P style='line-height: 20px;'> In the examined area there are two different hydrogeological environments. The first is represented by deep groundwater, the main groundwater resource in Apulia. <P style='line-height: 20px;'> The second hydrogeological environment, now of lesser importance than the deep aquifer in terms of size and use, is made up of some small shallow groundwater systems situated in post-calabrian sands and located in the eastern area. <P style='line-height: 20px;'> During some sampling cycles carried out in the studied area, water was withdrawn from both the deep aquifer and from the shallow groundwater. For every sample, the necessary parameters were determined for the physical and chemical characterisation of two different hydrogeological environments. Moreover, some chemical parameters indicating anthropogenic activities were determined. <P style='line-height: 20px;'> Analysis of the aerial distribution of the measured parameters has shown some main areas subject to different conditions of contamination risk, in accordance with the hydrogeological and geological features of the investigated area. <P style='line-height: 20px;'> In the south-eastern part of the investigated area, the important action performed by the surface aquifer for protecting the deep groundwater from contamination of anthropogenic origin is clear.<p> On the other hand, in the shallow groundwater, areas of nitrate and nitrite contamination have been identified, which result from the extensive use of fertilizers

Intrinsic Vulnerability Assessment of a Confined Carbonatic Aquifer: the Brindisi Plain Case (Southern Italy)

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Co-designing convivial tools to support participation in community radio

Connectivity made possible by the diffusion of digital technologies has offered new possibilities for the public to interact with media, including radio. However, interactions are often framed by globally managed platforms, owned by companies with values based on maximizing profit, rather than prioritising Illich’s forms of conviviality. In this article, we draw on experiences from the Grassroot Wavelengths project that introduces an innovative peer-to-peer platform to support the creation and management of community radio stations. We offer insight into the practices of participation in community media, where the users influence decisions concerning the technology, the content, the actors and the organization policy of the radio station, through a participatory design approach. These collaborations between researchers and users, together with a focus on the development of relational assets in local contexts, are fundamental in an attempt to design a platform that fosters conviviality and offers an alternative way to consider participation in community media

Studi sul metabolismo degli sfingolipidi in cellule in coltura : modificazione del pattern gangliosidico in fibroplasti umani : il fenomeno dello "shedding" in fibroplasti umani ed in cellule granulari di cervelletto di ratto

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In other words. Writing research as ethico-onto-epistemic practice

This paper aims to uncover the agential character of writing re- search in the light of the concept of ethico-onto-epistemology. Theoretically, it unpacks the debate around reflexivity and the performativity of theories and methods, underlining the active role of writing research accounts that do not just “capture” the world, but rather enact multiple worlds. This argu- ment is developed with the support of empirical accounts belonging to an ethnographic study in a telecommunication company, which are informed by conceptual sensibilities from STS and Feminist Science Studies intended as two related yet distinct theoretical frameworks. I conclude by arguing that taking up the call for ethico-onto-epistemology when writing research ac- counts call us to trouble the character of writing as a neutral practice, and to grapple with the power of accounting for – thus producing – multiple realities that differ in terms of epistemological, ethical and political relations

Tipaldo, G., Ceravolo, F., Moiso, V., Pitrelli, N., Sciannamblo, M., Tallacchini, M. (a cura di) 2023. Guerre di confine. Autorità epistemiche e società in transizione. Meltemi Editore.

Questo libro muove dal riconoscimento epistemologico dell’incertezza come tratto endemico macroscopico di ogni società umana: l’instabilità quale condizione di una rinnovata “normalità”, che la pandemia di Covid-19 ha esasperato ma non generato. L’opera è concepita tenendo a mente due finalità complementari e almeno in parte sovrapposte: una culturale, l’altra politica. Per quanto attiene al primo aspetto, il lavoro intende esporre il dibattito – non di rado conflittuale – tra scienza, politica, media e società a un pubblico più ampio e articolato di quello composto da chi se ne occupa per contingente necessità o per mestiere. Ciascuno dei cinque capitoli contiene un “classico” del pensiero dei Science Technology and Society Studies ed è preceduto da un’introduzione di registro divulgativo allo scopo di facilitare la metabolizzazione dei contenuti e, per quanto possibile, attualizzarli nel contesto storico e culturale che oggi viviamo. Il secondo dei due fini, quello politico, si manifesta nella scelta di tenere fede alla lezione weberiana circa lo sguardo della sociologia sui fatti del mondo: mantenersi laici e avalutativi sui problemi tra scienza, politica, media e società. Non si tratta però di un’azione facile, né popolare, considerando che siamo nell’era del consenso guadagnato sulle polarizzazioni e le gogne online. Eppure, pare l’unico modo sensato di collocare in prospettiva i temi discussi

Efflux of sphingolipids metabolically labeled with [1-3H]sphingosine, L-[3-3H]serine and [9,10-3H]palmitic acid from normal cells in culture

The membrane complex lipids of human fibroblasts and differentiated rat cerebellar granule cells in culture were metabolically radiolabeled with [1-3H]sphingosine, L-[3-3H]serine and [9,10-3H]palmitic acid. A relevant efflux of radioactive sphingolipids and phosphatidylcholine was obsd. from cells to the culture medium in the presence of fetal calf serum. This event was independent of the concn. and structure of the metabolic precursor administered to cells, and it was linearly time-dependent. The radioactive lipid patterns present in the medium were different from those present in the cells. Radioactive sphingomyelin and ganglioside GM3 contg. short acyl chains were the main species present in the medium from human fibroblasts, while sphingomyelin and GD3 ganglioside in that from neuronal cells. In the absence of proteins in the culture medium, the efflux of complex lipids was much lower than in the presence of serum, and the patterns of released mols. were again different from those of cells. [on SciFinder (R)

A 12-month treatment with tenofovir does not impair bone mineral accrual in HIV-infected children

Background: Short-term use of tenofovir (TDF) has been associated with bone mineral loss in adults and children. Objective: To assess whether the substitution of stavudine with TDF would result in decreased bone mineral content (BMC) and bone mineral density (BMD) accrual in HIV-infected children. Methods: The lumbar spine and whole-body BMC and BMD were measured by dual-energy x-ray absorptiometry in 16 HIV-infected children (age range: 6.4-17.9 years) on stable highly active antiretroviral therapy. Bone measurements were obtained 12 months before the switch, at baseline, and 12 months after switching to TDF. Expected changes in bone measurements were calculated from cross-sectional data obtained from 166 healthy children. Results: The BMC and BMD increments observed before switching therapy did not differ from expected increments. Similarly, the changes detected during treatment with TDF did not differ significantly from those calculated in healthy controls. Conclusions: Substitution to a TDF-containing antiretroviral regimen does not seem to impair bone mineral accrual in children showing a good immunologic response to antiretroviral treatment