196,636 research outputs found
Passivity-based harmonic control through series/parallel damping of an H-bridge rectifier
No full textNowadays the H-bridge is one of the preferred solutions to connect DC loads or distributed sources to the single-phase grid. The control aims are: sinusoidal grid current with unity power factor and optimal DC voltage regulation capability. These objectives should be satisfied, regardless the conditions of the grid, the DC load/source and the converter nonlinearities. In this paper a passivity-based approach is thoroughly investigated proposing a damping-based solution for the error dynamics. Practical experiments with a real converter validate the analysis.
Prefazione
No full textPresentazione del tema del seminario volto ad evidenziare le scelte localistiche compiute da Di Monopoli, Argentina, Genisi e Lopez nelle loro oper
Raccontare la Puglia. Parola di scrittore - Omar Di Monopoli, Cosimo Argentina, Gabriella Genisi, Livio Romano
No full textIl volume raccoglie gli interventi di Omar Di Monopoli, Cosimo Argentina, Gabriella Genisi e Livio Romano tenuti durante il ciclo di seminari "Raccontare la Puglia. Parola di scrittore" ideato e moderato dalla curatrice. Ogni scrittore ha raccontato le proprie esperienze autoriali e ha spiegato le motivazioni dell'ambientazione pugliese delle proprie opere, entrando nel vivo delle dinamiche della resa del localismo e svelando i segreti del proprio laboratorio di scrittura
Active front end adjustable speed drives under grid voltage sags: effects and dynamical performance evaluation
No full textIn this paper an evaluation of voltage sags effects on active front end adjustable speed drives (ASD's) performance has been carried out. The operation of such devices is affected by several disturbances that can occur on the electrical grid. According to a number of surveys on power quality, voltage sags represent the main cause of disturbances which effects are even more evident than the ones related to harmonics. Therefore, the behavior and the dynamical performances of field-orientated and direct torque control drives under grid symmetrical voltage sags are investigated and simulation as well as experimental results are presented. This kind of analysis provides useful advices for future work on how drive control technique can be modified and implemented in order to fulfill some important requirements above all on speed regulation and grid current
PASAR MONOPOLI
No full textPasar sebagai kumpulan jumlah pembeli dan penjual individual mempunyai karakteristik-
karakteristik tertentu. Karakteristik tersebut muncul karena masing-masing individu pembeli
dan penjual mempunyai perilaku individual yang berbeda pula.Di dalam biaya produksi
terdapat karakteristik pasar tertentu dimana dalam pasar tersebut hanya terdapat satu penjual
dari satu produk (barang atau jasa) yang tidak mempunyai alternatif produk pengganti
(substitusi).Pasar dengan karakteristik tersebut disebut dengan pasar monopoli. Mengingat
dalam pasar monopoli hanya terdapat satu penjual dari satu produk (barang atau jasa) yang
tidak mempunyai alternatif produk pengganti (subtitusi) maka dalam pasar monopoli tidak
ada persaingan dari penjual lain. Dalam kehidupan perekonomian yang faktual, sangat jarang
mendapat penjual yang tidak menghadapi persaingan dari penjual lain. Meskipun dalam suatu
pasar misalnya hanya terdapat satu penjual sehingga tidak ada persaingan secara langsung
dari penjual lain, tetapi penjual tunggal tersebut akan menghadapi persaingan secara tidak
langsung dari penjual lain yang menghasilkan produk yang dapat merupakan alternatif
produk pengganti yang tidak sempurna (Amin, M kutbi.2010)
Monopoli: una città, una chiesa, una confraternita
No full textIl volume è dedicato a Monopoli e in particolare alla chiesa e confraternita di S. Maria del Suffragio nonché al tema della morte, alle sue ritualità e alla sua iconografia in Terra di Bari. Questo ristretto ma intenso "universo barocco" viene indagato con diversi e convergenti metodi della storia socio-economica, della storia delle arti, della storia religiosa e delle scienze antropologiche. Appare straordinaria l'epifania della circolarità del tempo, in un ciclo dalla Nascita (la chiesa in origine era dedicata alla Natività di Maria) conduce fino alla Morte, nel segno però di una auspicata ri-Nascita, con l'uscita delle Anime dalle fiamme del purgatorio attraverso l'intermediazione della Madonna del Suffragio.La chiesa custodisce nove corpi mummificati, tra i quali emerge la bambina "Plautilla", che costituisce quasi il simbolo della confraternita e di una morte ritualizzata e "addomesticata", consegnata dal mondo del passato al presente
PASAR MONOPOLI
No full textPasar sebagai kumpulan jumlah pembeli dan penjual individual mempunyai karakteristik-
karakteristik tertentu.Karakteristik tersebut muncul karena masing-masing individu pembeli
dan penjual mempunyai perilaku individual yang berbeda pula.Di dalam biaya produksi
terdapat karakteristik pasar tertentu dimana dalam pasar tersebut hanya terdapat satu penjual
dari satu produk (barang atau jasa) yang tidak mempunyai alternatif produk pengganti
(substitusi).Pasar dengan karakteristik tersebut disebut dengan pasar monopoli. Mengingat
dalam pasar monopoli hanya terdapat satu penjual dari satu produk (barang atau jasa) yang
tidak mempunyai alternatif produk pengganti (subtitusi) maka dalam pasar monopoli tidak ada
persaingan dari penjual lain. Dalam kehidupan perekonomian yang faktual, sangat jarang
mendapat penjual yang tidak menghadapi persaingan dari penjual lain. Meskipun dalam suatu
pasar misalnya hanya terdapat satu penjual sehingga tidak ada persaingan secara langsung dari
penjual lain, tetapi penjual tunggal tersebut akan menghadapi persaingan secara tidak langsung
dari penjual lain yang menghasilkan produk yang dapat merupakan alternatif produk pengganti
yang tidak sempurna(Amin, M kutbi.2010)
Molecular Aspects of the Interaction with Gram-Negative and Gram-Positive Bacteria of Hydrothermal Carbon Nanoparticles Associated with Bac8c2,5Leu Antimicrobial Peptide
No full textMolecular Aspects of the Interaction with Gram-Negative and Gram-
Positive Bacteria of Hydrothermal Carbon Nanoparticles Associated
with Bac8c2,5Leu Antimicrobial Peptide
Giulia Barzan,⊥ Ida Kokalari,⊥ Giacomo Gariglio, Elena Ghibaudi, Marc Devocelle, Marco P. Monopoli,
Alessio Sacco, Angelo Greco, Andrea M. Giovannozzi, Andrea M. Rossi, and Ivana Fenoglio*
Cite This: https://doi.org/10.1021/acsomega.2c00305 Read Online
ACCESS Metrics & More Article Recommendations *sı Supporting Information
ABSTRACT: Antimicrobial peptides (AMPs) are widely studied
as therapeutic agents due to their broad-spectrum efficacy against
infections. However, their clinical use is hampered by the low in
vivo bioavailability and systemic toxicity. Such limitations might be
overcome by using appropriate drug delivery systems. Here, the
preparation of a drug delivery system (DDS) by physical
conjugation of an arginine-rich peptide and hydrothermal carbon
nanoparticles (CNPs) has been explored, and its antimicrobial
efficacy against Eschericia coli (E. coli) and Staphylococcus aureus
investigated in comparison with the unloaded carrier and the free
peptide. The mechanism of interaction between CNPs and the
bacteria was investigated by scanning electron microscopy and a
combined dielectrophoresis−Raman spectroscopy method for real-
time analysis. In view of a possible systemic administration, the
effect of proteins on the stability of the DDS was investigated by using albumin as a model protein. The peptide was bounded
electrostatically to the CNPs surface, establishing an equilibrium modulated by pH and albumin. The DDS exhibited antimicrobial
activity toward the two bacterial strains, albeit lower as compared to the free peptide. The decrease in effectiveness toward E. coli was
likely due to the rapid formation of a particle-induced extracellular matrix. The present results are relevant for the future
development of hydrothermal CNPs as drug delivery agents of AMP
Indici per la condivisione delle responsabilita’ nel deterioramento della qualita’ della potenza elettrica
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