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Search Results (3)

Search Parameters:
Keywords = Maria Callas

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7 pages, 1449 KiB  
Review
The Tapeworm and Maria Callas’ Diet: A Mystery Revealed
by Inmaculada Zarzo, J. Francisco Merino-Torres, María Trelis and Jose M. Soriano
Parasitologia 2022, 2(3), 160-166; https://doi.org/10.3390/parasitologia2030015 - 21 Jun 2022
Cited by 1 | Viewed by 35283
Abstract
Maria Callas’ diet, also known as the tapeworm diet, is a non-food-based hazardous treatment. This study aims to justify whether Maria Callas used this treatment for weight loss. To investigate this, we searched in the ‘white’, ‘grey’, and ‘black’ literature. The historical facts [...] Read more.
Maria Callas’ diet, also known as the tapeworm diet, is a non-food-based hazardous treatment. This study aims to justify whether Maria Callas used this treatment for weight loss. To investigate this, we searched in the ‘white’, ‘grey’, and ‘black’ literature. The historical facts about the use of tapeworm pills seem to be inconsistent and include fake news. In the case of Maria Callas, it has been confirmed by her biography and personal communications that she was diagnosed with a beef tapeworm due to eating uncooked meat. This discredits the hypothesis that she consumed tapeworm pills. Full article
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15 pages, 4178 KiB  
Article
Comparison between Conventional and Non-Conventional Computer Methods to Define Antiknock Properties of Fuel Mixtures
by Leonardo Pulga, Diego Lacrimini, Claudio Forte, Valerio Mariani, Stefania Falfari and Gian Marco Bianchi
Fuels 2022, 3(2), 217-231; https://doi.org/10.3390/fuels3020014 - 13 Apr 2022
Cited by 1 | Viewed by 2562
Abstract
Research Octane Number (RON) is one of the primary indicators for the determination of the resistance of gasoline fuels to autoignition. This parameter is usually determined with a test procedure involving a standardized engine that requires expensive hardware and time-consuming tests. In this [...] Read more.
Research Octane Number (RON) is one of the primary indicators for the determination of the resistance of gasoline fuels to autoignition. This parameter is usually determined with a test procedure involving a standardized engine that requires expensive hardware and time-consuming tests. In this work, a set of different methods with which to determine the RON of gasoline fuel surrogates is presented, considering only computer simulations, which allows to reduce both cost and time for the evaluation. A palette of 11 chemical species has been chosen as the basis for the surrogates’ database, which will be investigated in the work, allowing the representation of the complex chemical formulation of fuels in an easier way. A simplified zero-dimensional engine model of the standard variable compression ratio is used to provide pressure and temperature, then employed to calculate RON. This is done first by means of existing methods, and then by introducing new processes concerning a simplified chemical reactor built on kinetic schemes. Finally, these different methodologies are tested against a molar weighted sum of RONs of each chemical specie, allowing to have a criterion for comparison and evaluating their real prediction capabilities. Full article
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19 pages, 4856 KiB  
Article
Numerical Evaluation of the Effect of Fuel Blending with CO2 and H2 on the Very Early Corona-Discharge Behavior in Spark Ignited Engines
by Valerio Mariani, Giorgio La Civita, Leonardo Pulga, Edoardo Ugolini, Emanuele Ghedini, Stefania Falfari, Giulio Cazzoli, Gian Marco Bianchi and Claudio Forte
Energies 2022, 15(4), 1426; https://doi.org/10.3390/en15041426 - 15 Feb 2022
Cited by 3 | Viewed by 1944
Abstract
Reducing green-house gases emission from light-duty vehicles is compulsory in order to slow down the climate change. The application of High Frequency Ignition systems based on the Corona discharge effect has shown the potential to extend the dilution limit of engine operating conditions [...] Read more.
Reducing green-house gases emission from light-duty vehicles is compulsory in order to slow down the climate change. The application of High Frequency Ignition systems based on the Corona discharge effect has shown the potential to extend the dilution limit of engine operating conditions promoting lower temperatures and faster combustion events, thus, higher thermal and indicating efficiency. Furthermore, predicting the behavior of Corona ignition devices against new sustainable fuel blends, including renewable hydrogen and biogas, is crucial in order to deal with the short-intermediate term fleet electric transition. The numerical evaluation of Corona-induced discharge radius and radical species under those conditions can be helpful in order to capture local effects that could be reached only with complex and expensive optical investigations. Using an extended version of the Corona one-dimensional code previously published by the present authors, the simulation of pure methane and different methane–hydrogen blends, and biogas–hydrogen blends mixed with air was performed. Each mixture was simulated both for 10% recirculated exhaust gas dilution and for its corresponding dilute upper limit, which was estimated by means of chemical kinetics simulations integrated with a custom misfire detection criterion. Full article
(This article belongs to the Special Issue Numerical Simulation for Next Generation Engines)
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