Search results for "Elimi"
showing 10 items of 283 documents
La recente riforma della disciplina italiana del subappalto nella prospettiva del bid rigging
2023
L’articolo analizza in chiave critica la disciplina nazionale del subappalto nell’ambito delle gare pubbliche, così come recentemente riformata a seguito di diversi interventi normativi in ottemperanza alla procedura d’infrazione avviata dalla Commissione UE. Stando alla tesi dell’A., l’attuale quadro normativo – caratterizzato dalla quasi totale eliminazione delle limitazioni previgenti (probabilmente anche spingendosi oltre ciò che la Commissione UE ha richiesto) – difetta nel trovare un equo bilanciamento tra il principio della massima partecipazione alla gara, da un lato, e l’esigenza di prevenire e svelare potenziali condotte collusive, dall’altro. La suddetta conclusione, peraltro, ap…
Mathematical formulation of pulse amplitude modulation selective harmonic elimination in multilevel three phase inverters
2022
In this paper multilevel cascaded H-bridges (CHB) three phase inverters with 2n dc sources, n=1,2,3,... are considered and a mathematical formulation providing both 2n switching angles and dc voltage source to eliminate n+1 harmonics and their respective multiple from their output voltage waveform, is proposed. The computed angles don't depend on modulation index and the source voltages linearly vary with it. The proposed procedure finds the solution through an analytical formula that avoids to solve transcendental systems and presents very low computational cost. A lot of low order harmonics are eliminated, returning a very low total harmonic distortion (THD). Particularly for 9-level conf…
Mixed Harmonic Elimination Control for a Single-Phase 9 Level Grid-Connected Inverter
2018
The power quality requirements are increasingly stringent, due to the continuous growth of devices connected to the grid that introduce harmonics. These devices include DC to AC energy conversion systems, i.e. grid connected inverters. The design, control and operation of these systems must take into account the rules of interconnection to the electricity grid. To improve the quality of the output waveform of the grid-connected inverter, Multilevel Converters (MC) with selective harmonic elimination modulation technique can be used. This paper presents a single-phase nine level grid-connected inverter with DC/DC input stages. The obtained switching angles for THD minimization are independen…
Cathepsin D Content in Colorectal Cancer
1995
Cathepsin D content and activity were determined in matched paired sets of colorectal tumor tissue and normal mucosa and correlated with a number of biological and clinical parameters. Significantly higher cathepsin D activity was measured in tumor cytosol compared to paired normal mucosa (p < 0.02), in Dukes’ stage A tumors compared to Dukes’ B and C (p < 0.05), in tumors < 5 cm compared to those > 5 cm, or in tumors with a low proliferation rate compared to those with a high proliferation rate (p < 0.05). Moreover, significant differences in enzyme activity between tumor tissue and paired normal mucosa were observed in node-positive and G2 tumors (p < 0.05). No significa…
Trastornos de la alimentación. Trastornos de eliminación
2020
La patología que vamos a ver en este tema es sumamente interesante desde la perspectiva del desarrollo psicológico. El acto de alimentación es el primer regulador del afecto, en la medida en que la supervivencia física del individuo se asienta, ineludiblemente, sobre esta función somática. Cuestión largamente explorada y abordada desde la perspectiva psicodinámica –no en vano la primera etapa del desarrollo libidinal es la etapa oral–, la patología de la alimentación en los niños se está reconceptualizando en los últimos años como un proceso relacional y multisistémico (Davies et al., 2006). En el caso de los denominados Trastornos de la eliminación –encopresis y enuresis–, indican un fraca…
Commento all'art. 422 c.p.p.
2008
Il commento analizza l'attività di assunzione delle prove da parte del giudice nell'udienza preliminare, a seguito della riforma della norma operata dalla c.d. Legge Carotti. In particolare, dopo l'analisi sulla disciplina l'attenzione si sofferma sulla compatibilità dell'adempimento con la logica bifasica del sistema processuale.
Carestia e opulenza nella lirica di Velimir Chlebnikov
2008
In questo saggio vengono prese in esame alcune liriche del poeta futurista russa, al fine di individuare le valenze ideologiche e metaforiche di alcuni elementi lessicali e retorici attinenti alla sfera del cibo e dell'alimentazione.
Preliminary design of an unmanned Wing In Ground effect craft.
2009
This paper describes a systematic technique for preliminary conceptual design of Unmanned Wing in Ground Effect Craft (U-WIGs). Application of the methodology to a small U-WIG to be employed in tasks like coastal patrolling, oceanography, civil protection, control and monitoring, is presented. A mission profile and numerical mission specifications on minimum payload weight conveyable, cruising speed, minimum cruising altitude and autonomy suitable for the intended craft duties are imposed. On the basis of such specifications, take off weight is estimated via the fuel fraction method. Due to the lack of statistical information for small sized unmanned WIGs, data available for UAVs are used, …
Calibration and simulation of ASM2d at different temperatures in a phosphorous removal pilot plant
2006
In this work, an organic and nutrient removal pilot plant was used to study the temperature influence on phosphorus accumulating organisms. Three experiments were carried out at 13, 20 and 24.5 degrees C, achieving a high phosphorus removal percentage in all cases. The ASM2d model was calibrated at 13 and 20 degrees C and the Arrhenius equation constant was obtained for phosphorus removal processes showing that the temperature influences on the biological phosphorus removal subprocesses in a different degree. The 24.5 degrees C experiment was simulated using the model parameters obtained by means of the Arrhenius equation. The simulation results for the three experiments showed good corresp…
Preliminary remark
2015
International audience