Dispotismo e “ragion di Stato” in Samuel Sorbière

Il concetto di Verità elaborato dalla filosofia classica, e vivificato dall’apporto cristiano, vacilla vistosamente tra il XVI e il XVII secolo. Al suo posto subentra quello di verosimiglianza - proposto dallo scetticismo di Pirrone al tramonto della polis greca - rivalutato nel XVI secolo da Montaigne e Charron ed elevato poi a fondamento di un sapere all’altezza dei tempi dai sempre più numerosi seguaci del “libero pensiero”. La verità è ricerca senza una meta prestabilita, una “queste” infinita guidata esclusivamente dal riferimento alla ragione e all’esperienza e alla comunicazione. Questa ansia innovatrice non lascia indifferente Sorbière che si allontana dal calvinismo per interrogarsi sui rapporti tra libertà umana e prescienza divina e fa suo il motto di Orazio “sapere aude” invocato dall’amico e maestro Gassendi. In una rivendicazione piena della libertà di pensare, di cercare e comunicare le verità possibili al di fuori dei limiti imposti da qualsiasi Chiesa, dogma o ragion di Stato

1000–32 Spontaneous Evolution of Nonocclusive Coronary Dissection After PTCA: A 6 Month Angiographic Follow-up Study

We have previously shown that, when good distal flow is maintained, dissection after PTCA has a favourable short term (24 hrs) evolution and does not require bail-out interventions or CABG.To evaluate the long term (6 months) clinical and angiographic evolution of non occlusive dissection, we submitted 129 consecutive patients (103 male, mean age 53±11 yrs) undergoing elective PTCA (147 lesions, 66 LAD, 49 CX, 32 DX) to repeat angiography 24 hrs and 6 months after the procedure. Lesions were measured by QCA and coronary dissection was graded using the NHLBI classification (types A-E; Huber Am J Cardiol 1991;68: 467). Mean stenosis was 85±11% before and 25±7% immediately after PTCA (p<0.001). Residual stenosis was not significantly different at the 24 hrs restudy (24±9%). Non occlusive coronary dissection (flow TIMI grade 3 in all pts) was seen in 49/147 lesions (33%) and evolved as follows:Dissection (tot)Immediate 49 (33%)24 hrs 41 (28%)6 months 18 (12%)A332710B1085C442D221At the 6 month follow-up study, restenosis was seen in 51/147 lesions (34%), of which 5/49 (10%) had dissection and 46/106 (43%) did not. No cardiovascular events or recurrence of symptoms were recorded in the absence of restenosis.Therefore 1) nonocclusive dissection after PTCA usually improves after 6 month; 2) in the absence of flow impairment and ischemia this complication does not require any further intervention; 3) non occlusive dissection is not associated with increased incidence of restenosis

Numerical and Experimental Analysis of a CPV/T Receiver Suitable for Low Solar Concentration Factors

AbstractSolar energy conversion is one promising technology to provide the building required energy. Generally, the main used technologies are the PV and thermal flat panels, but this situation provides separately electricity and thermal energy. Electrical and Thermal power combined production is available for the concentrating solar but, usually, this technology is applied to devices working at high concentration factor (over 100), which are large and, therefore, are not suitable for roof installations. At lower concentrating factors (less of 50 suns) small linear, mono-axial, roof integrated devices can be designed and built. The solar receiver plays a key role in the performance of energy generation because it houses the solar cells and itis used to recover the thermal solar power: actually, this is the device where solar energy is converted in electrical and thermal power. The radiation flux distribution on the receiver affects the efficiency of the linear solar concentrator system, because in a mono-axial sunrays are not perpendicular to the receiver. This paper describes the numerical and experimental investigation useful to evaluate the performance of a linear low (20 suns) CPV device and to understand the thermal working condition of the solar receiver. The experimental study focuses to a quantitative analysis of the energy transfer from sun to the water. The numerical activity is a CFD conjugate analysis where the solid volume and the fluids are investigated together; the scope is to individuate how the energy flux cross the device

Novel automatic scorpion-detection and -recognition system based on machine-learning techniques

All species of scorpions have the ability to inoculate venom, some of them even with the possibility of killing a human. Therefore, early detection and identification is essential to minimize scorpion stings. In this paper, we propose a novel automatic system for the detection and recognition of scorpions using computer vision and machine learning approaches. Two complementary image processing techniques were used for the proposed detection method in order to accurately and reliably detect the presence of scorpions. The first based on the fluorescence characteristics of scorpions when are exposed to ultraviolet (UV) light, and the second on the shape features of the scorpions. On the other hand, three models based on machine learning algorithms for the image recognition and classification of scorpions have been compared. In particular, the three species of scorpions found in La Plata city (Argentina): Bothriurus bonariensis (of no sanitary importance), and Tityus trivittatus and Tityus confluence (both of sanitary importance), have been researched using the Local Binary Pattern Histogram (LBPH) algorithm and deep neural networks with transfer learning (DNN with TL) and data augmentation (DNN with TL and DA) approaches. Confusion matrix and Receiver Operating Characteristic (ROC) curve were used for evaluating the quality of these models. Results obtained show that the DNN with TL and DA model is the most efficient model to simultaneously differentiate between Tityus and Bothriurus (for health security) and between Tityus trivittatus and Tityus confluence (for biological research purposes).Fil: Giambelluca, Francisco Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones en Electrónica, Control y Procesamiento de Señales. Universidad Nacional de La Plata. Instituto de Investigaciones en Electrónica, Control y Procesamiento de Señales; ArgentinaFil: Cappelletti, Marcelo Ángel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones en Electrónica, Control y Procesamiento de Señales. Universidad Nacional de La Plata. Instituto de Investigaciones en Electrónica, Control y Procesamiento de Señales; Argentina. Universidad Nacional Arturo Jauretche; ArgentinaFil: Osio, Jorge. Universidad Nacional Arturo Jauretche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones en Electrónica, Control y Procesamiento de Señales. Universidad Nacional de La Plata. Instituto de Investigaciones en Electrónica, Control y Procesamiento de Señales; ArgentinaFil: Giambelluca, Luis Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Estudios Parasitológicos y de Vectores. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Estudios Parasitológicos y de Vectores; Argentin

Computational Study of Inverted All-Inorganic Perovskite Solar Cells Based on CsPbIxBr3-X Absorber Layer with Band Gap of 1.78 eV

All-inorganic perovskite solar cells (PSCs) with inverted p-i-n configuration have not yet reached the high efficiency achieved in the normal n-i-p architecture. However, the inverted all-inorganic PSC are more compatible with the fabrication of tandem solar cells. In this work, a theoretical study of all-inorganic PSCs with inverted structure ITO/HTL/CsPbIxBr3−x/ETL/Ag, has been performed by means of computer simulation. Four p‐type inorganic materials (NiO, Cu2O, CuSCN and CuI) and three n-type inorganic materials (ZnO, TiO2 and SnO2) were used as hole and electron transport layers (HTL and ETL), respectively. A band gap of 1.78 eV was used for the CsPbI x Br3−x perovskite layer. The simulation results allow identifying that CuI and ZnO are the most appropriate materials as HTL and ETL, respectively. Additionally, optimized values of thickness, acceptor density and defect density in the absorber layer have been obtained for the ITO/CuI/CsPbI x Br3−x /ZnO/Ag, from which, an optimum efficiency of 21.82% was achieved. These promising theoretical results aim to improve the manufacturing process of inverted all-inorganic PSCs and to enhance the performance of perovskite–perovskite tandem solar cells.Fil: Martinez, Nahuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tandil. Centro de Investigaciones en Física e Ingeniería del Centro de la Provincia de Buenos Aires. Sede Olavarría del Centro de Investigaciones en Física e Ingeniería del Centro de la Provincia de Buenos Aire. Universidad Nacional del Centro de la Provincia de Buenos Aires. Centro de Investigaciones en Física e Ingeniería del Centro de la Provincia de Buenos Aires. Sede Olavarría del Centro de Investigaciones en Física e Ingeniería del Centro de la Provincia de Buenos Aires; Argentina. Universidad Nacional de Quilmes. Departamento de Ciencia y Tecnología; ArgentinaFil: Pinzón Rueda, Carlos Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Multidisciplinario de Biología Celular. Grupo Vinculado al IMBICE - Grupo de Biología Estructural y Biotecnología - Universidad Nacional de Quilmes - GBEyB | Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Multidisciplinario de Biología Celular. Grupo Vinculado al IMBICE - Grupo de Biología Estructural y Biotecnología - Universidad Nacional de Quilmes - GBEyB | Universidad Nacional de La Plata. Instituto Multidisciplinario de Biología Celular. Grupo Vinculado al IMBICE - Grupo de Biología Estructural y Biotecnología - Universidad Nacional de Quilmes - GBEyB; Argentina. Universidad Nacional de Quilmes. Departamento de Ciencia y Tecnología; ArgentinaFil: Casas, Guillermo. Universidad Nacional de Quilmes. Departamento de Ciencia y Tecnología; ArgentinaFil: Alvira, Fernando Carlos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Multidisciplinario de Biología Celular. Grupo Vinculado al IMBICE - Grupo de Biología Estructural y Biotecnología - Universidad Nacional de Quilmes - GBEyB | Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Multidisciplinario de Biología Celular. Grupo Vinculado al IMBICE - Grupo de Biología Estructural y Biotecnología - Universidad Nacional de Quilmes - GBEyB | Universidad Nacional de La Plata. Instituto Multidisciplinario de Biología Celular. Grupo Vinculado al IMBICE - Grupo de Biología Estructural y Biotecnología - Universidad Nacional de Quilmes - GBEyB; Argentina. Universidad Nacional de Quilmes. Departamento de Ciencia y Tecnología; ArgentinaFil: Cappelletti, Marcelo Angel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones en Electrónica, Control y Procesamiento de Señales. Universidad Nacional de La Plata. Instituto de Investigaciones en Electrónica, Control y Procesamiento de Señales; Argentina. Universidad Nacional Arturo Jauretche; Argentin

Infrared nanospectroscopy depth-dependent study of modern materials: morpho-chemical analysis of polyurethane/fibroin binary meshes

Infrared scattering-type scanning near-field optical microscopy (IR s-SNOM) and imaging is here exploited together with attenuated total reflection (ATR) IR imaging and scanning electron microscopy (SEM) to depict the chemical composition of fibers in hybrid electrospun meshes. The focus is on a recently developed bio-hybrid material for vascular tissue engineering applications, named Silkothane & REG;, obtained in the form of nanofibrous matrices from the processing of a silk fibroin-polyurethane (SFPU) blend via electrospinning. Morphology and chemistry of single fibers, at both surface and subsurface level, have been successfully characterized with nanoscale resolution, taking advantage of the IR s-SNOM capability to portray the nanoscale depth profile of this modern material working at diverse harmonics of the signal. The applied methodology allowed to describe the superficial characteristics of the mesh up to a depth of about 100 nm, showing that SF and PU do not tend to co-aggregate to form hybrid fibers, at least at the length scale of hundreds of nanometers, and that subdomains other than the fibrillar ones can be present. More generally, in the present contribution, the depth profiling capabilities of IR s-SNOM, so far theoretically predicted and experimentally proven only on model systems, have been corroborated on a real material in its natural conditions with respect to production, opening the room for the exploitation of IR s-SNOM as valuable technique to support the production and the engineering of nanostructured materials by the precise understanding of their chemistry at the interface with the environment

TCT-713 Impact And Evolution Of Right Ventricular Dysfunction After MitraClip In High Risk Patients With Functional Mitral Regurgitation

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