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Search Results: 1 - 10 of 7085 matches for " Daniela Cianci "
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Scientific communication in italy: an epistemological interpretation
Cianci Eloisa
JCOM : Journal of Science Communication , 2003,
Abstract: The aim of the present research is to study the “c ollective imaginary” produced by the articles within scientific circulation, in order to understand the perception of science that is shaping among the public. It is meant to identify, based on the theoretical background of cognitive science and on a epistemological perspective, the cognitive maps that drive the analysis and the interpretation of scientific knowledge, in order to let the global sense built by single individuals’ cognitions and interpretative acts arise; their paradigms of reference and the scientific imaginary being subtended. The results from this analysis have proven how important the role of collective scientific imaginary can be in a “ knowledgeable society” . Twelve cognitive maps have been deduced, and they represent the epistemological outlines the articles refer to. They have highlighted an ongoing general transition from mechanicist and reductionist paradigms of reference to other olistic and systemic ones, as well as the new role that technology has attained within our society and its own imaginary. What comes out of all of this, is therefore an always-tighter need for collaboration and cooperation among all the disciplines concurring to the building of our society and our science.
In memory of Prof. Orlando Montemurro
Dario Cianci
Italian Journal of Animal Science , 2010, DOI: 10.4081/2323
The “Auto-Dissemination” Approach: A Novel Concept to Fight Aedes albopictus in Urban Areas
Beniamino Caputo,Annamaria Ienco,Daniela Cianci,Marco Pombi,Vincenzo Petrarca,Alberto Baseggio,Gregor J. Devine,Alessandra della Torre
PLOS Neglected Tropical Diseases , 2012, DOI: 10.1371/journal.pntd.0001793
Abstract: Background The main constraint to the fight against container-breeding mosquito vectors of human arboviruses is the difficulty in targeting the multiplicity of larval sources, mostly represented by small man-made water containers. The aim of this work is to assess the feasibility of the “auto-dissemination” approach, already tested for Aedes aegypti, as a possible alternative to traditional, inefficient control tools, against Ae. albopictus in urban areas. The approach is based on the possibility that wild adult females, exposed to artificial resting sites contaminated with pyriproxyfen, can disseminate this juvenile hormone analogue to larval habitats, thus interfering with adult emergence. Methodology We carried out four field experiments in two areas of Rome that are typically highly infested with Ae. albopictus, i.e. the main cemetery and a small green area within a highly urbanised neighbourhood. In each area we used 10 pyriproxyfen “dissemination” stations, 10 “sentinel” sites and 10 covered, control sites. The sentinel and control sites each contained 25 Ae. albopictus larvae. These were monitored for development and adult emergence. Principal Findings When a 5% pyriproxyfen powder was used to contaminate the dissemination sites, we observed significantly higher mortality at the pupal stage in the sentinel sites (50–70%) than in the controls (<2%), showing that pyriproxyfen was transferred by mosquitoes into sentinel sites and that it had a lethal effect. Conclusions The results support the potential feasibility of the auto-dissemination approach to control Ae. albopictus in urban areas. Further studies will be carried out to optimize the method and provide an effective tool to reduce the biting nuisance caused by this aggressive species and the transmission risk of diseases such as Dengue and Chikungunya. These arboviruses pose an increasing threat in Europe as Ae. albopictus expands its range.
Atherosclerotic renal artery stenosis: one year outcome of total and separate kidney function following stenting
Giorgio Coen, Eleonora Moscaritolo, Carlo Catalano, Raffaella Lavini, Italo Nofroni, Giuseppe Ronga, Daniela Sardella, Alvaro Zaccaria, Rosario Cianci
BMC Nephrology , 2004, DOI: 10.1186/1471-2369-5-15
Abstract: In this study, 27 patients with unilateral RAS were subjected to stenting and followed for a period of one year, while 19 patients were observed while on medical treatment only. The group of 27 patients, 67.33 ± 6.8 years of age, creatinine of 2.15 ± 0.9 mg/dl, following stenting, were followed at intervals with biochemical tests, renal scintigraphy and doppler ultrasonography. The control group (70.0 ± 6.1 years, creatinine 1.99 ± 0.7 mg/dl) was also followed for one year.One year after stenting mean creatinine clearance (Ccr) increased from 36.07 ± 17.2 to 40.4 ± 21.6 ml/min (NS). Arterial BP, decreased after 1,3,6, and 12 months (p < 0.05). The number of antihypertensive drugs also decreased (p < 0.05). A significant increase in proteinuria was also observed. In the control group both Ccr, BP and proteinuria did not show significant changes. Based on renal scintigraphy and Ccr at subsequent times, it was possibile to evaluate the timecourse of renal function in both kidneys of the stented patients. In the stented kidneys Ccr increased significantly. On the controlateral kidney a decrease of renal function (p < 0.05) was observed. Resistance index appeared to be a risk factor of the functional outcome.Stenting of RAS due to atherosclerosis is followed by stabilization or improvement of Ccr, mainly at the stented kidney, while contralateral renal function showed a decrease.Renal artery stenosis due to atherosclerotic changes of the renal arteries has become a serious concern as a cause of hypertension and renal ischemia, resulting frequently in end-stage renal failure [1,2]. Several epidemiologic studies have shown the elevated prevalence of ischemic nephropathy, with special regard to atherosclerotic renal artery stenosis, in elderly patients [3,4]. Instead of the classical surgical approach, percutaneous balloon angioplasty or endovascular stenting have recently become accepted procedures in the attempt to revascularize the stenotic kidney and prevent chronic ren
Malignant PEComa: a case report with emphasis on clinical and morphological criteria
Federico Selvaggi, Domenico Risio, Roberta Claudi, Roberta Cianci, Domenico Angelucci, Daniela Pulcini, Alberto D'Aulerio, Margherita Legnini, Roberto Cotellese, Paolo Innocenti
BMC Surgery , 2011, DOI: 10.1186/1471-2482-11-3
Abstract: We handled the case of a 42-year-old man with unresectable PEComa of the abdomen. A 7 cm hepatic hypodense lesion between segment V and VIII of the liver and diffuse intraperitoneal nodules of 0,3-3,5 cm along the right subcapsular hepatic region, were documented by a CT scan. Radiological images showed abnormal lymph nodes of the right internal mammary chain and anterior mediastinum. The patient underwent an explorative laparotomy for uncontrolled intrabdominal hemorrhage without a well-defined preoperative tumor diagnosis. At surgery, multiple lobulated nodules containing hemorrhagic fluid on the liver surface, peritoneum and omentum were confirmed. The procedure had a palliative intent and consisted of hemostasis, hematomas evacuation and omentectomy. The diagnosis of PEComa was made after surgery on the basis of morphological and immunohystochemical criteria. Radiological and intra operative findings suggest that the mass has an hepatic origin with diffuse involvement of hepatic capsule and suspensory ligaments. The patient received medical support care with blood and plasma transfusions. In our experience, PEComa was clinically malignant, leading to a fatal outcome 25 days after hospital admission of patient.Here we report and discuss the peculiar clinical, radiological and morphological presentation of unresectable PEComa. Although in the majority of the reported series, PEComas show a more better prognosis, our case presents with a particular aggressive biological behaviour. The importance of a correct preoperative diagnosis, the need for more effective targeted therapies based on tumor molecular knowledge and evidence-based clinical studies are emphasized together with a revision of the concerning scientific literature.PEComa is a mesenchimal neoplasm, predominantly affecting young adults and female individuals [1]. It includes clear cell "sugar" tumor of the lung and extrapulmunary sites, angiomyolipoma, clear cell myomelanocytic tumor of the falciform liga
Atherosclerotic ischemic renal disease. Diagnosis and prevalence in an hypertensive and/or uremic elderly population
Giorgio Coen, Santo Calabria, Silvia Lai, Eleonora Moscaritolo, Italo Nofroni, Giuseppe Ronga, Michele Rossi, Guido Ventroni, Daniela Sardella, Michele Ferrannini, Alvaro Zaccaria, Rosario Cianci
BMC Nephrology , 2003, DOI: 10.1186/1471-2369-4-2
Abstract: All 269 patients were studied either by color-flow duplex sonography (n = 238) or by renal scintigraphy (n = 224), and 199 of the 269 patients were evaluated using both of these techniques. 40 patients, found to have renal artery stenosis (RAS), were subjected to 3D-contrast enhancement Magnetic Resonance Angiography (MRA) and/or Selective Angiography (SA). An additional 23 cases, negative both to scintigraphy and to ultrasound study, underwent renal angiography (MRA and/or SA).Color-duplex sonography, carried out in 238 patients, revealed 49 cases of RAS. MR or SA was carried out in 35 of these 49 patients, and confirmed the diagnosis in 33. Color-duplex sonography showed a PPV value of 94.3% and NPV of 87.0% while renal scintigraphy, carried out in 224 patients, had a PPV of 72.2% and a NPV of 29.4%. Patients with RAS showed a higher degree of renal insufficiency compared to non stenotic patients while there were no differences in proteinuria. RAS, based on color-duplex sonography studies, was present in 11% of patients in the age group 50–59, 18% in the 60–69 and 23% at age 70 and above.A relatively large percentage of the elderly population with renal insufficiency and/or hypertension is affected by RAS and is at risk of developing end-stage renal failure. Color-duplex ultrasonography is a valid routine method of investigation of population at risk for renal artery stenosis.Ischemic renal disease is a renal insufficiency associated with main renal artery stenosis or occlusion [1,2]. Chronic ischemia causes progressive renal damage with atrophy and permanent loss of structural integrity. The cause-and-effect relationship between anatomic renal artery disease and renal function is often difficult to establish [3]. Deterioration of renal function derives not only from reduction in blood flow, but also from long term hypertension and concomitant risk factors like diabetes, hyperlipidemia, atheroemboli and aging [4].Ischemic nephropathy has been recognized in the las
Stochastic patterns in a 1D Rock-Paper-Scissor model with mutation
Cianci Claudia,Timoteo Carletti
Quantitative Biology , 2014,
Abstract: In the framework of a 1D cyclic competition model, the Rock-Paper-Scissor model, where bacteria are allowed to mutate and move in space, we study the formation of stochastic patterns, where all the bacteria species do coexist. We modelled the problem using an individual-based setting and using the system size van Kampen expansion to deal with the Master Equation, we have been able to characterise the spatio-temporal patterns using the power spectrum of the fluctuations. We proved that such patterns are robust against the intrinsic noise and they can be found for parameters values beyond the ones fixed by the deterministic approach. We complement such analytical results with numerical simulations based on the Gillespie's algorithm.
Metodologia de implanta o do sistema de gest oambiental em uma indústria automobilística
Alexandre Erucci Silva Cianci da
Exacta , 2003,
Abstract: This paper aims to demonstrate that the current increasing in competition among companies makes the competitiveness distinctions more valued in organizations, and that the professional has to be aware of this. In this context, the Analyses of the Implantation of an Environmental Management System (EMS), based on ISO 14001 Standard, fits this frame, in order to look after the environmental preservation required by communities, nongovernmental organizations and governments demands, besides the companies that seek to offer their products and/or services not only according to technical standards, but also to ensure quality of life, therefore preventing the increase of generation/growth of residues. This attitude from the organizations related to the environmental context also searches for a higher power of competitivity and awareness regarding environmental issues.
From the Boltzmann equation to fluid mechanics on a manifold
Peter J. Love,Donato Cianci
Physics , 2012, DOI: 10.1098/rsta.2011.0097
Abstract: We apply the Chapman-Enskog procedure to derive hydrodynamic equations on an arbitrary surface from the Boltzmann equation on the surface.
Poset splitting and minimality of finite models
Nicolás Cianci,Miguel Ottina
Mathematics , 2015,
Abstract: We develop a novel technique, which we call poset splitting, that allows us to solve two open problems regarding minimality of finite models of spaces: the nonexistence of a finite model of the real projective plane with fewer than 13 points and the nonexistence of a finite model of the torus with fewer than 16 points. Indeed, we prove much stronger results from which we also obtain that there does not exist a finite model of the Klein bottle with fewer than 16 points and that the integral homology groups of finite spaces with fewer than 13 points are torsion-free, settling a conjecture of Hardie, Vermeulen and Witbooi. Furthermore, we also apply our technique to give a complete characterization of the minimal finite models of the real projective plane, the torus, and the Klein bottle. In addition, we show that the poset splitting technique has an intrinsic interest giving original topological results that can be obtained from its application, such as a generalization of Hurewicz's theorem for non-simply-connected spaces and a generalization of a result of R. Brown on the fundamental group of a space.
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