Search Results - "Martins, Douglas"

Design of Compact Bearingless Disc Drive Systems by Peralta, Patricio, Araujo, Douglas Martins, Perriard, Yves

“…Inflating costs and emerging applications are spawning interests toward smaller and faster electric drives. The challenges of miniaturization make magnetic…”
Get full text

Novel Generalized Notch Filter for Harmonic Vibration Suppression in Magnetic Bearing Systems by Borque Gallego, Guzman, Rossini, Leopoldo, Achtnich, Timon, Araujo, Douglas Martins, Perriard, Yves

“…Magnetic bearings represent an important alternative to conventional ball bearings for applications that require very low noise and vibrations. The absence of…”
Get full text

Novel Optimized Shape and Topology for Slotless Windings in BLDC Machines by Burnand, Guillaume, Thabuis, Adrien, Araujo, Douglas Martins, Perriard, Yves

“…Slotless windings are commonly used in small size high-speed electrical brushless dc machines. Unlike slotted windings, forced to follow the direction of…”
Get full text

Model-Based System Engineering Framework for Superconducting Accelerator Magnet Design by Maciejewski, Micha, Auchmann, Bernhard, Araujo, Douglas Martins, Vallone, Giorgio, Leuthold, Juerg, Smajic, Jasmin

“…The design specification of future high-field accelerator magnets require innovation in and integration of multiple disciplines. Numerical models underpin each…”
Get full text

Current Control Strategy for Dynamic Winding Reconfiguration of Slotless Brushless DC Motors by Copt, Florian, Araujo, Douglas Martins, Koechli, Christian, Perriard, Yves

“…Depending on the winding configuration, the intrinsic characteristic of a motor differs. By reconfiguring the winding, it becomes possible to increase the…”
Get full text

From Hot to Cold: Advanced Materials and Processes for Nb3Sn Based Magnets by Brem, Andre, Duda, Michal, Mullera, Colin, Garciaa, Henrique, Huga, Christoph, Daly, Michael, Douglas Martins Araujo, Kosse, Jaap, Otten, Simon, Kario, Anna, Herman H J Ten Kate, Milanese, Attilio, Auchmann, Bernhard

“…We worked out an approach for obtaining “clean” magnets by introducing oxygen during the reaction heat treatment (RHT) of a single glass fiber insulated Nb3Sn…”
Get full text

The importance of clean development mechanism for small hydro power plants by Martins, Douglas Eduardo Costa, Seiffert, Mari Elizabete Bernardini, Dziedzic, Maurício

“…The present study sought to examine the importance of CDM for the implementation of small hydro in Brazil, assessing its advantages, disadvantages and…”
Get full text

Optimization of the Electromagnetic Design of the FCC Sextupoles and Octupoles by Louzguiti, Alexandre, Martins Araujo, Douglas, Pracht, Dimitri, Prioli, Marco, Ravaioli, Emmanuele, Schoerling, Daniel, Vallone, Giorgio

“…The future circular collider (FCC) will require 696 double-aperture lattice sextupoles, 9336 single-aperture sextupole corrector magnets, and 480…”
Get full text

Tests of the FRESCA2 100 mm Bore Nb3Sn Block-Coil Magnet to a Record Field of 14.6 T by Willering, Gerard, Arnestad, Havard, Bajko, Marta, Bajas, Hugo, Bortot, Lorenzo, Bottura, Luca, Bourcey, Nicolas, Duda, Michal, Ferracin, Paolo, Feuvrier, Jerome, Grosclaude, Philippe, Mangiarotti, Franco, Martins Araujo, Douglas, Perez, Juan Carlos, Petrone, Carlo, Rochepault, Etienne, de Rijk, Gijs, Turi, Daniel, Durante, Maria, Manil, Pierre, Rondeaux, Francoise, Rifflet, Jean-Michel

“…The Nb3Sn block coil dipole magnet FRESCA2 was developed within the framework of a collaboration between CEA Saclay and CERN, in the continuity of the European…”
Get full text

Preliminary Integration for Testing HTS Feather-M2 in the FRESCA2 Dipole Magnet by Araujo, Douglas Martins, Kirby, Glyn, Van Nugteren, Jeroen, Murtomaki, Jaakko, Ferracin, Paolo, de Rijk, Gijs, Perez, Juan, Willering, Gerard, Canale, Matthieu

“…In 2018, FRESCA2 magnet, developed within a collaboration between CEA and CERN to provide a background field for tests of cables and small coils, reached a…”
Get full text

Magnetic and Mechanical Analysis of a Large Aperture 15 T Cable Test Facility Dipole Magnet by Vallone, Giorgio, Arbelaez, Diego, Araujo, Douglas Martins, Ballarino, Amalia, Ferracin, Paolo, Hafalia, Aurelio, Hopkins, Simon, Marinozzi, Vittorio, Pong, Ian, Prestemon, Soren, Sabbi, GianLuca, Velev, Gueorgui

“…The US Department of Energy (DOE) Office of Science (SC), is funding a large bore "Cable Test Facility Magnet" for testing advanced cables and inserts in high…”
Get full text

Magnetic and Mechanical Design of a 15-T Large Aperture Dipole Magnet for Cable Testing by Sarasola, Xabier, Bruzzone, Pierluigi, Bottura, Luca, Ferracin, Paolo, Martins Araujo, Douglas, de Rijk, Gijs, Cau, Francesca, Portone, Alfredo, Testoni, Pietro, Prestemon, Soren, Sabbi, GianLuca, Minervini, Joseph

“…A large aperture Nb3Sn dipole is proposed to replace the magnet assembly of EDIPO, which was irreversibly damaged in 2016. The goal is to generate a background…”
Get full text

CAMx ozone source attribution in the eastern United States using guidance from observations during DISCOVER‐AQ Maryland by Goldberg, Daniel L., Vinciguerra, Timothy P., Anderson, Daniel C., Hembeck, Linda, Canty, Timothy P., Ehrman, Sheryl H., Martins, Douglas K., Stauffer, Ryan M., Thompson, Anne M., Salawitch, Ross J., Dickerson, Russell R.

“…A Comprehensive Air‐Quality Model with Extensions (CAMx) version 6.10 simulation was assessed through comparison with data acquired during NASA's 2011 Deriving…”
Get full text

Direct ozone production rate measurements and their use in assessing ozone source and receptor regions for Houston in 2013 by Baier, Bianca C., Brune, William H., Lefer, Barry L., Miller, David O., Martins, Douglas K.

“…Mitigating ozone pollution involves reducing ozone production and relies on complex air-quality models to design reduction strategies and determine their…”
Get full text

Spatial and Temporal Variability of Ground and Satellite Column Measurements of NO2 and O3 over the Atlantic Ocean During the Deposition of Atmospheric Nitrogen to Coastal Ecosystems Experiment by Martins, Douglas K., Najjar, Raymond G., Tzortziou, Maria, Abuhassan, Nader, Thompson, Anne M., Kollonige, Debra E.

“…In situ measurements of O3 and nitrogen oxides (NO + NO2=NOx) and remote sensing measurements of total column NO2 and O3 were collected on a ship in the North…”
Get full text

Phosphate adsorption on chemically modified sugarcane bagasse fibres by Carvalho, Wender Santana, Martins, Douglas Ferreira, Gomes, Fernando Rosa, Leite, Inácio Ramos, Gustavo da Silva, Leandro, Ruggiero, Reinaldo, Richter, Eduardo Mathias

“…Integral sugarcane bagasse fibres of about 2 cm length that were pre-treated for removal of greases and sugars were carboxymethylated on their surface,…”
Get full text

The influence of near-field fluxes on seasonal carbon dioxide enhancements: results from the Indianapolis Flux Experiment (INFLUX) by Miles, Natasha L., Davis, Kenneth J., Richardson, Scott J., Lauvaux, Thomas, Martins, Douglas K., Deng, A. J., Balashov, Nikolay, Gurney, Kevin R., Liang, Jianming, Roest, Geoff, Wang, Jonathan A., Turnbull, Jocelyn C.

“…Background Networks of tower-based CO 2  mole fraction sensors have been deployed by various groups in and around cities across the world to quantify…”
Get full text

Bay Breeze Influence on Surface Ozone at Edgewood, MD During July 2011 by Stauffer, Ryan M., Thompson, Anne M., Martins, Douglas K., Clark, Richard D., Goldberg, Daniel L., Loughner, Christopher P., Delgado, Ruben, Dickerson, Russell R., Stehr, Jeffrey W., Tzortziou, Maria A.

“…Surface ozone (O3) was analyzed to investigate the role of the bay breeze on air quality at two locations in Edgewood, Maryland (lat: 39.4deg, lon: −76.3deg)…”
Get full text

Progress on the Upgrade of EDIPO, a 15 T Large Aperture Dipole by Araujo, Douglas Martins, Ballarino, Amalia, Bordini, Bernardo, Bottura, Luca, Hopkins, Simon C., Perez, Juan C., Ravaioli, Emmanuele, de Rijk, Gijs, Bruzzone, Pierluigi, Sarasola, Xabier, Sedlak, Kamil, Solodko, Evgeny, Cau, Francesca, Portone, Alfredo, Reccia, Luigi, Testoni, Pietro, Arbelaez, Diego, Ferracin, Paolo, Pong, Ian, Prestemon, Soren, Sabbi, GianLuca, Vallone, Giorgio

“…The upgraded magnet assembly of the EDIPO test facility aims at generating 15 T at 4.2 K and 85% of short sample limit in a large rectangular aperture and over…”
Get full text

Telemedicine applied to offshore medical emergencies: impacts on a Brazilian oil industry by Martins, Douglas de Almeida, Menezes, Ana Carolina Braga, da Silva, Vanessa Uchoa de Assis Martins, Costa, André Santana, Dinis, Maria Alzira Pimenta, Viterbo, Lilian Monteiro Ferrari

“…Background The study aims to analyse the impact of the use of advanced telemedicine resources in the management of medical emergencies on offshore oil…”
Get full text