164 results on '"Grande, Ana"'
Search Results
2. Generating antiaromaticity in polycyclic conjugated hydrocarbons by thermally selective skeletal rearrangements at interfaces
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Pérez-Elvira, Elena, Barragán, Ana, Chen, Qifan, Soler-Polo, Diego, Sánchez-Grande, Ana, Vicent, Diego J., Lauwaet, Koen, Santos, José, Mutombo, Pingo, Mendieta-Moreno, Jesús I., de la Torre, Bruno, Gallego, José M., Miranda, Rodolfo, Martín, Nazario, Jelínek, Pavel, Urgel, José I., and Écija, David
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- 2023
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3. Effectiveness and Safety of Direct-acting Antivirals for Treatment of Adolescents With HCV/HIV Coinfection: Real-world Data From Europe
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Malik, Farihah, Crichton, Siobhan, Plotnikova, Yulia, Latysheva, Inga, Samarina, Anna, Pokorska-Śpiewak, Maria, Gomez, Marisa Navarro, Bailey, Heather, Thorne, Claire, Judd, Ali, Turkova, Anna, Collins, Intira Jeannie, Marczyńska, Magdalena, Popielska, Jolanta, Ołdakowska, Agnieszka, Zawadka, Konrad, Pluta, Magdalena, Doroba, Małgorzata, Okhonskaya, Liubov, Rozenberg, Vladimir, Voronin, Evgeny, Plynsky, Alexksey A., José Mellado, María, Escosa, Luis, García Hortelano, Milagros, Sainz, Talía, Grasa, Carlos, Rodríguez, Paula, Rojo, Pablo, Prieto-Tato, Luis, Epalza, Cristina, Tagarro, Alfredo, Domínguez, Sara, Ballesteros, Álvaro, Tomás Ramos, José, Illán, Marta, Berzosa, Arantxa, Guillén, Sara, Soto, Beatriz, Luisa Navarro, María, Saavedra, Jesús, Santos, Mar, Aguilera, David, Santiago, Begoña, Jimenez de Ory, Santiago, Bermejo, Amanda, Penín, María, Martínez, Jorge, Badillo, Katie, Belén Jiménez, Ana, Navas, Adriana, Oñate, Eider, Pocheville, Itziar, Garrote, Elisa, Colino, Elena, Afonso, Olga, Gómez Sirvent, Jorge, Garzón, Mónica, Román, Vicente, Angulo, Raquel, Neth, Olaf, Falcón, Lola, Terol, Pedro, Luis Santos, Juan, Vázquez, Álvaro, Carazo, Begoña, Medina, Antonio, Lendínez, Francisco, Ibáñez, Mercedes, Peromingo, Estrella, Isabel Sánchez, María, Ruiz, Beatriz, Grande, Ana, José Romero, Francisco, Pérez, Carlos, Calle, Laura, Pareja, Marta, Losada, Begoña, Herranz, Mercedes, Bustillo, Matilde, Collado, Pilar, Antonio Couceiro, José, Vila, Leticia, Calviño, Consuelo, Isabel Piqueras, Ana, Oltra, Manuel, Gavilán, César, Montesinos, Elena, Dapena, Marta, Jiménez, Beatriz, Gloria Andrés, Ana, Marugán, Víctor, Ochoa, Carlos, Isabel Menasalvas, Ana, Cervantes, Eloísa, Álvarez, Beatriz, Díez, Cristina, Bernardino, Ignacio, Luisa Montes, María, Valencia, Eulalia, Delgado, Ana, Rubio, Rafael, Pulido, Federico, Bisbal, Otilia, Monereo Alonso, Alfonso, Berenguer, Juan, Díez, Cristina, Aldamiz, Teresa, Tejerina, Francisco, Carlos Bernaldo de Quirós, Juan, Padilla, Belén, Carrillo, Raquel, Montilla, Pedro, Bermúdez, Elena, Valerio, Maricela, Sanz, Jose, Gimeno, Alejandra, Cervero, Miguel, Torres, Rafael, Moreno, Santiago, Jesús Perez, María, del Campo, Santos, Ryan, Pablo, Troya, Jesus, Sanz, Jesus, Losa, Juan, Gomez, Rafael, Górgolas, Miguel, Díaz, Alberto, de la Fuente, Sara, Antonio Iribarren, Jose, Jose Aramburu, Maria, Martinez, Lourdes, Josune Goikoetxea, Ane, Ibarra, Sofia, de la Peña, Mireia, Asensi, Víctor, Hernandez, Michele, Remedios Alemán, María, Pelazas, Ricardo, del Mar Alonso, María, María López, Ana, García, Dácil, Rodriguez, Jehovana, Angel Cardenes, Miguel, Castaño, Manuel A., Orihuela, Francisco, Pérez, Inés, Isabel Mayorga, Mª, Fernando Lopez-Cortes, Luis, Roca, Cristina, Llaves, Silvia, Jose Rios, Maria, Rodriguez, Jesus, Palomo, Virginia, Pasquau, Juan, Garcia, Coral, Hernandez, Jose, Martinez, Clara, Rivero, Antonio, Camacho, Angela, Merino, Dolores, Raffo, Miguel, Corpa, Laura, Martinez, Elisa, Mateos, Fernando, Javier Blanch, Jose, Torralba, Miguel, Arazo, Piedad, Samperiz, Gloria, Miralles, Celia, Ocampo, Antonio, Pousada, Guille, Mena, Alvaro, Montero, Marta, Salavert, Miguel, Jose Galindo, Maria, Pretel, Natalia, Portilla, Joaquín, Portilla, Irene, Gutierrez, Felix, Masia, Mar, Robledano, Cati, Adsuar, Araceli, Hinojosa, Carmen, Monteagudo, Begoña, Bachiller, Pablo, Abadía, Jesica, Galera, Carlos, Albendin, Helena, Fernandez, Marian, and Ramon Blanco, Jose
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- 2024
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4. [Translated article] Design of a panel of indicators for antibiotic stewardship programs in the Emergency Department
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Ruiz-Ramos, Jesús, Santolaya-Perrín, María Rosario, González-del-Castillo, Juan, Candel, Francisco Javier, Martín-Quirós, Alejandro, López-Contreras-González, Joaquín, Julián-Jiménez, Agustín, and Suárez-Lledó-Grande, Ana
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- 2024
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5. On‐Surface Covalent Synthesis of Carbon Nanomaterials by Harnessing Carbon gem‐Polyhalides.
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Urgel, José I., Sánchez‐Grande, Ana, Vicent, Diego J., Jelínek, Pavel, Martín, Nazario, and Écija, David
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- 2024
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6. Controlling On‐Surface Photoactivity: The Impact of π‐Conjugation in Anhydride‐Functionalized Molecules on a Semiconductor Surface.
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Frezza, Federico, Sánchez‐Grande, Ana, Canola, Sofia, Lamancová, Anna, Mutombo, Pingo, Chen, Qifan, Wäckerlin, Christian, Ernst, Karl‐Heinz, Muntwiler, Matthias, Zema, Nicola, Di Giovannantonio, Marco, Nachtigallová, Dana, and Jelínek, Pavel
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SEMICONDUCTORS , *MOLECULAR structure , *ULTRAHIGH vacuum , *MOLECULES , *METALLIC surfaces , *ORGANIC semiconductors - Abstract
On‐surface synthesis has become a prominent method for growing low‐dimensional carbon‐based nanomaterials on metal surfaces. However, the necessity of decoupling organic nanostructures from metal substrates to exploit their properties requires either transfer methods or new strategies to perform reactions directly on inert surfaces. The use of on‐surface light‐induced reactions directly on semiconductor/insulating surfaces represents an alternative approach to address these challenges. Here, exploring the photochemical activity of different organic molecules on a SnSe semiconductor surface under ultra‐high vacuum, we present a novel on‐surface light‐induced reaction. The selective photodissociation of the anhydride group is observed, releasing CO and CO2. Moreover, we rationalize the relationship between the photochemical activity and the π‐conjugation of the molecular core. The different experimental behaviour of two model anhydrides was elucidated by theoretical calculations, showing how the molecular structure influences the distribution of the excited states. Our findings open new pathways for on‐surface synthesis directly on technologically relevant substrates. [ABSTRACT FROM AUTHOR]
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- 2024
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7. A three‐point compact LOD‐FDTD method for solving the 2D scalar wave equation.
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Pereda, José A. and Grande, Ana
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FINITE differences , *DISPERSION relations , *WAVE equation , *FINITE difference time domain method - Abstract
This letter introduces an unconditionally stable finite‐difference time‐domain (FDTD) method, based on the locally one‐dimensional (LOD) technique, for the solution of the two‐dimensional scalar wave equation (WE) in homogeneous media. The second spatial derivatives in the WE are discretized by using a three‐point compact (implicit) finite‐difference formula with a free parameter. This formula has second‐order accuracy and becomes fourth‐order by properly selecting the parameter value. Moreover, the resulting algorithm only involves tridiagonal matrices, as when using standard (explicit) second‐order finite differences. Additionally, a stability analysis is performed and the numerical dispersion relation of the method is derived. The proposed compact LOD‐WE‐FDTD technique has been applied to the calculation of resonant frequencies in a metallic ridge cavity. The accuracy of the results obtained has been studied as a function of the parameter value. [ABSTRACT FROM AUTHOR]
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- 2024
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8. “Validation of a cyberbullying questionnaire as a screening tool for other forms of intimate-partner violence towards young women”
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García, Lucía Hernández, Castañeda, Myrian Pichiule, Lozano, Luisa Lasheras, Alcaide, Marisa Pires, Gavín, María Ordobás, and Grande, Ana Gandarillas
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- 2021
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9. Tailoring topological order and π-conjugation to engineer quasi-metallic polymers
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Cirera, Borja, Sánchez-Grande, Ana, de la Torre, Bruno, Santos, José, Edalatmanesh, Shayan, Rodríguez-Sánchez, Eider, Lauwaet, Koen, Mallada, Benjamin, Zbořil, Radek, Miranda, Rodolfo, Gröning, Oliver, Jelínek, Pavel, Martín, Nazario, and Ecija, David
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- 2020
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10. Young adults and HIV. Awareness and risk behaviour of a group living in Spain
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Velo-Higueras, Carlos, Cuéllar-Flores, Isabel, Sainz-Costa, Talía, Navarro-Gómez, M. Luisa, García-Navarro, Cristina, Fernández-McPhee, Carolina, Ramírez, Alejandro, Bisbal, Otilia, Blazquez-Gamero, Daniel, Ramos-Amador, José Tomás, Valencia-Ortega, Eulalia, González-Tomé, M. Isabel, Mellado, María José, Escosa, Luis, Hortelano, Milagros García, Sainz, Talía, González-Tomé, María Isabel, Rojo, Pablo, Blázquez, Daniel, Fernández, Elisa, Epalza, Cristina, Zamora, Berta, Martin, Manuela, Velo, Carlos, de Aragón, Ana Martínez, Ramos, José Tomás, Cuellar, Isabel, Prieto, Luis, Guillén, Sara, Navarro, María Luisa, Saavedra, Jesús, Santos, Mar, Muñoz, M. Ángeles, Ruiz, Beatriz, McPhee, Carolina Fernández, de Ory, Santiago Jiménez, Álvarez, Susana, Fortuny, Claudia, Noguera, Ton, Moreno, David, Núñez, Esmeralda, Neth, Olaf, Falcón, Dolores, Roa, Miguel Ángel, Beceiro, José, Martínez, Jorge, Badillo, Katie, Apilanez, Miren, Pocheville, Itziar, Garrote, Elisa, Colino, Elena, Sirvent, Jorge Gómez, Garzón, Mónica, Román, Vicente, Montesdeoca, Abián, Mateo, Mercedes, Muñoz, María José, Angulo, Raquel, Falcón, Lola, Terol, Pedro, Santos, Juan Luis, Lendínez, Francisco, Grande, Ana, Romero, Francisco José, Pérez, Carlos, Lillo, Miguel, Losada, Begoña, Herranz, Mercedes, Bustillo, Matilde, Guerrero, Carmelo, Collado, Pilar, Couceiro, José Antonio, Pérez, Amparo, Piqueras, Ana Isabel, Bretón, Rafael, Segarra, Inmaculada, Gavilán, César, Jareño, Enrique, Montesinos, Elena, Dapena, Marta, Álvarez, Cristina, Andrés, Ana Gloria, Marugán, Víctor, Ochoa, Carlos, Alfayate, Santiago, Menasalvas, Ana Isabel, and de Miguel, Elisa
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- 2019
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11. On‐Surface Synthesis of Non‐Benzenoid Nanographenes Embedding Azulene and Stone‐Wales Topologies.
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Biswas, Kalyan, Chen, Qifan, Obermann, Sebastian, Ma, Ji, Soler‐Polo, Diego, Melidonie, Jason, Barragán, Ana, Sánchez‐Grande, Ana, Lauwaet, Koen, Gallego, José M., Miranda, Rodolfo, Écija, David, Jelínek, Pavel, Feng, Xinliang, and Urgel, José I.
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SCANNING tunneling microscopy ,AZULENE ,TUNNELING spectroscopy ,ELECTRONIC structure ,MAGNETIC properties - Abstract
The incorporation of non‐benzenoid motifs in graphene nanostructures significantly impacts their properties, making them attractive for applications in carbon‐based electronics. However, understanding how specific non‐benzenoid structures influence their properties remains limited, and further investigations are needed to fully comprehend their implications. Here, we report an on‐surface synthetic strategy toward fabricating non‐benzenoid nanographenes containing different combinations of pentagonal and heptagonal rings. Their structure and electronic properties were investigated via scanning tunneling microscopy and spectroscopy, complemented by computational investigations. After thermal activation of the precursor P on the Au(111) surface, we detected two major nanographene products. Nanographene Aa−a embeds two azulene units formed through oxidative ring‐closure of methyl substituents, while Aa−s contains one azulene unit and one Stone‐Wales defect, formed by the combination of oxidative ring‐closure and skeletal ring‐rearrangement reactions. Aa−a exhibits an antiferromagnetic ground state with the highest magnetic exchange coupling reported up to date for a non‐benzenoid containing nanographene, coexisting with side‐products with closed shell configurations resulted from the combination of ring‐closure and ring‐rearragement reactions (Ba−a, Ba−s, Bs‐a and Bs−s). Our results provide insights into the single gold atom assisted synthesis of novel NGs containing non‐benzenoid motifs and their tailored electronic/magnetic properties. [ABSTRACT FROM AUTHOR]
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- 2024
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12. Design of a panel of indicators for antibiotic stewardship programs in the Emergency Department.
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Ruiz-Ramos, Jesús, Rosario Santolaya-Perrín, María, González-del-Castillo, Juan, Javier Candel, Francisco, Martín-Quirós, Alejandro, López-Contreras-González, Joaquín, Julián-Jiménez, Agustín, and Suárez-Lledó-Grande, Ana
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- 2024
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13. On-Surface Synthesis of a Radical 2D Supramolecular Organic Framework.
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Frezza, Federico, Matěj, Adam, Sánchez-Grande, Ana, Carrera, Manuel, Mutombo, Pingo, Kumar, Manish, Curiel, David, and Jelínek, Pavel
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- 2024
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14. Effect of Fish Oil Parenteral Emulsion Supplementation on Inflammatory Parameters after Esophagectomy.
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Suárez-Lledó Grande, Ana, Llop Talaveron, Josep M., Leiva Badosa, Elisabet, Farran Teixido, Leandre, Miró Martín, Mónica, Bas Minguet, Jordi, Navarro Velázquez, Sergio, Creus Costas, Gloria, Virgili Casas, Nuria, Fernández Álvarez, Mónica, and Badía Tahull, María B.
- Abstract
(Background) Esophagectomy (EPG) presents high morbidity and mortality. Omega-3 fatty acids (ω-3FA) are a pharmaconutrient with benefits for postoperative morbidity. Studies of ω-3FA administered parenterally after esophagectomy are scarce. This study proposes to investigate the effect of combining fish oil lipid emulsions (LE) administered parenterally with enteral nutrition support. (Methods) Randomization was 1:1:1 in three groups: Group A received a LE mixture of 0.4 g/kg/day of fish oil and 0.4 g/kg/day of LCT/MCT 50:50, Group B received 0.8 g/kg/day of fish oil LE, and Group C received 0.8 g/kg/day of LCT/MCT 50:50. Variables were measured at recruitment time and day +1, +3, and +5. Inflammatory variables studied were Interlukin-6, C-reactive protein (CRP), tumoral necrosis factor-α (TNF-α), IL-10, IL-8 and CD25s. Safety, nutritional parameters and complications were analyzed. (Results) Administration of ω-3LE in the immediate postoperative period did not modulate the earlier inflammatory response. Statistically significant differences were found in IL-6 and CRP overall temporal evolution but were not found when studying the type of LE administered or in patients needing critical care. Administration of ω-3 resulted in safe and improved hypertriglyceridemia, depending on the dose. (Conclusions) ω-3FA has no impact on the early inflammatory postoperative response assessed for a short period but was safe. More studies for longer periods are needed. [ABSTRACT FROM AUTHOR]
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- 2024
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15. Tailoring π-conjugation and vibrational modes to steer on-surface synthesis of pentalene-bridged ladder polymers
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de la Torre, Bruno, Matěj, Adam, Sánchez-Grande, Ana, Cirera, Borja, Mallada, Benjamin, Rodríguez-Sánchez, Eider, Santos, José, Mendieta-Moreno, Jesús I., Edalatmanesh, Shayan, Lauwaet, Koen, Otyepka, Michal, Medveď, Miroslav, Buendía, Álvaro, Miranda, Rodolfo, Martín, Nazario, Jelínek, Pavel, and Écija, David
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- 2020
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16. Lokalno liječenje kroničnog ulcerativnog stomatitisa pasa primjenom mezenhimnih matičnih stanica iz adipoznog tkiva - prikaz slučaja
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Algorta, Agustina, Turini, Gabriela, Eguren, Juan Martín, Grande, Ana María, Yaneselli, Kevin, Benavides, Uruguaysito, and Maisonnave, Jacqueline
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dog ,gingivostomatitis ,stem cells ,adipose tissue ,oral ulceration ,pas ,matične stanice ,adipozno tkivo ,oralna ulceracija - Abstract
Canine chronic ulcerative stomatitis (CCUS) is a condition characterized by chronic pain, associated with oral ulceration, inflammation and mucosal necrosis. We report the case of a 5-year-old female Akita Inu canine with sialorrhea, halitosis, oral ulcers, submandibular lymphadenopathy and substantial oral discomfort. After a poor response to conventional scaling and antibiotic treatment, the patient improved when prednisolone was administered at a dose of 1mg / kg daily. Aggressive immunosuppressive treatments and teeth extractions were ruled out, so cellular therapy was started. This study evaluates the effect of allogeneic thawed and expanded canine adipose tissue-derived mesenchymal stem cells (AT-MSCs) therapy in a case of CCUS. Four local injections of AT-MSCs (3.5 to 8×106 cells) were administered every 3–4 weeks under general anesthesia and immediately after dental scaling. A higher dose of AT-MSCs (22×106 cells) was injected 5 months later under the same conditions. After the AT-MSCs treatment, the patient showed an improvement in oral lesions and reduction of oral pain for at least 4 weeks. We concluded that a dose of 1×106 AT-MSCs/kg body weight reduced the symptoms of CCUS for at least one month in this case. To our knowledge, this is the first description of allogeneic AT-MSC therapy on canine chronic ulcerative stomatitis., Kronični ulcerativni stomatitis u pasa (CCUS) obilježava kronični bol, povezan s oralnom ulceracijom, upalom i sluzničnom nekrozom. Ovo je prikaz slučaja petogodišnje ženke pasmine akita inu sa sijalorejom, halitozom, oralnim ulceracijama, submandibularnom limfadenopatijom i supstancijalnim oralnim smetnjama. Nakon slabog odgovora na konvencionalno čišćenje kamenca i antibiotičko liječenje, stanje se poboljšalo s primjenom prednizolona u dozi od 1mg/kg na dan. Odgođena je agresivna imunosupresija i vađenje zubi te je započeta terapija matičnim stanicama. U istraživanju je procijenjen učinak alogenskih odmrznutih i ekspandiranih mezenhimnih matičnih stanica iz adipoznog tkiva (AT-MSCs) u liječenju CCUS-a. Lokalno su primijenjene četiri injekcije AT-MSC-a (3,5 do 8 × 106 stanica) svaka 3 – 4 tjedna pod općom anestezijom i neposredno nakon čišćenja zubnog kamenca. Veća doza AT-MSC-a (22 × 106 stanica) primijenjena je pet mjeseci poslije pod jednakim uvjetima. Nakon liječenja AT-MSC-om došlo je do poboljšanja u cijeljenju oralnih lezija i smanjenju boli tijekom namanje četiri tjedna. Zaključujemo da, u ovomslučaju, doza od 1 × 106 AT-MSC-a po kilogramu tjelesne mase ublažava simptome CCUS-a tijekom najmanje jednog mjeseca. Ovo je prema našim spoznajama prvi opis alogenskog liječenja kroničnog ulcerativnog stomatitisa u pasa AT-MSC-om.
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- 2022
17. Dual band circular polarization selector using asymmetric SRR mirrors
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Barba, Ismael, Grande, Ana, López Cabeceira, Ana C., Fernández, Óscar, and Gómez, Álvaro
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Electromagnetism ,Física::Electromagnetisme [Àrees temàtiques de la UPC] ,Electromagnetisme - Abstract
In this work we aim to design circularly polarized flat mirror/reflectarray to work at a dual frequency. The design approach uses a unit cell made by four assymetrical split-ring resonators with an opposite rotation plus an element size variation, a seen in Fig.1 Fig. 1. Proposed structure (unit cell). The SRRs are made on copper on a FR4 substrate. There is a metallic (copper) plane mirror behind the structure. The inner rings have a radius of 5.8 mm (1st and 3rd quadrant) and 5mm (2nd and 4th quadrant). The outer rings have a radius of 10.2mm and 10mm, respectively. As we may see in Fig.2, the proposed structure presents a dual-band circular polarization selection: in the band around 2.97 GHz it absorbs LHCP incident waves while reflecting LHCP incident waves, doing the opposite around 3.28 GHz Fig. 2. Reflection coefficient for a circularly polarized wave normally incident on a structure as shown in Fig.1. The superindexes +/- stand for right-handed/left-handed circular polarized waves.
- Published
- 2022
18. Analysis of chiral effects in non-planar metamaterials with oblique incidence
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Fernández, Óscar, Ben Jamoun, Jihad, Gómez, Álvaro, Barba, Ismael, Grande, Ana M., and López Cabeceira, Ana C.
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Circuits impresos ,Electromagnetism ,Physics::Optics ,Física::Electromagnetisme [Àrees temàtiques de la UPC] ,Electromagnetisme - Abstract
One of the main research lines of the Grupo de Electromagnetismo of the Universidad de Cantabria is focused on the study and characterization of planar chiral metamaterial (CMM) structures implemented on printed circuit board technology. The objective of this communication is to analyze the influence of the angle of incidence on the chiral behavior of metamaterial structures. A variation of the split ring resonator (SRR) particle has been used as unit cell of the periodic metamaterials analyzed. From this structure, the effect of the angle of incidence on the chiral response is analyzed, evaluating variations in the geometry that provide different types of interaction between unit cells or between the incident wave and the structure. The SRRs are printed only on one side of the printed circuit board. Fig.1. This way, with normal incidence the structure is achiral. The obtained results show that the angle of incidence is a key parameter for the structure in order to present a chiral behavior. In this case, the chiral behavior is shown as a high difference between the transmission levels of the two eigenwaves (left handed and right handed circular polarized waves), i.e., circular dichroism.
- Published
- 2022
19. Steering Large Magnetic Exchange Coupling in Nanographenes near the Closed-Shell to Open-Shell Transition.
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Biswas, Kalyan, Soler, Diego, Mishra, Shantanu, Chen, Qiang, Yao, Xuelin, Sánchez-Grande, Ana, Eimre, Kristjan, Mutombo, Pingo, Martín-Fuentes, Cristina, Lauwaet, Koen, Gallego, José M., Ruffieux, Pascal, Pignedoli, Carlo A., Müllen, Klaus, Miranda, Rodolfo, Urgel, José I., Narita, Akimitsu, Fasel, Roman, Jelínek, Pavel, and Écija, David
- Published
- 2023
- Full Text
- View/download PDF
20. Design and Manipulation of a Minimalistic Hydrocarbon Nanocar on Au(111).
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Barragán, Ana, Nicolás‐García, Tomás, Lauwaet, Koen, Sánchez‐Grande, Ana, Urgel, José I., Björk, Jonas, Pérez, Emilio M., and Écija, David
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SCANNING tunneling microscopy ,CARBON monoxide ,HYDROCARBONS ,ANTHRACENE derivatives - Abstract
Nanocars are carbon‐based single‐molecules with a precise design that facilitates their atomic‐scale control on a surface. The rational design of these molecules is important in atomic and molecular‐scale manipulation to advance the development of molecular machines, as well as for a better understanding of self‐assembly, diffusion and desorption processes. Here, we introduce the molecular design and construction of a collection of minimalistic nanocars. They feature an anthracene chassis and four benzene derivatives as wheels. After sublimation and adsorption on an Au(111) surface, we show controlled and fast manipulation of the nanocars along the surface using the tip of a scanning tunneling microscope (STM). The mechanism behind the successful displacement is the induced dipole created over the nanocar by the STM tip. We utilized carbon monoxide functionalized tips both to avoid decomposition and accidentally picking the nanocars up during the manipulation. This strategy allowed thousands of maneuvers to successfully win the Nanocar Race II championship. [ABSTRACT FROM AUTHOR]
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- 2023
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21. COVID-19 dynamics in Madrid (Spain): A new convolutional model to find out the missing information during the first three waves.
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Benavides, Efrén M., Ordobás Gavín, María, Mallaina García, Raúl, de Miguel García, Sara, Ortíz Pinto, Maira, Doménech Gimenez, Ramón, and Gandarillas Grande, Ana
- Subjects
HOSPITAL admission & discharge ,INTENSIVE care units ,COVID-19 ,COMMUNICABLE diseases ,INFECTIOUS disease transmission - Abstract
This article presents a novel mathematical model to describe the spread of an infectious disease in the presence of social and health events: it uses 15 compartments, 7 convolution integrals and 4 types of infected individuals, asymptomatic, mild, moderate and severe. A unique feature of this work is that the convolutions and the compartments have been selected to maximize the number of independent input parameters, leading to a 56-parameter model where only one had to evolve over time. The results show that 1) the proposed mathematical model is flexible and robust enough to describe the complex dynamic of the pandemic during the first three waves of the COVID-19 spread in the region of Madrid (Spain) and 2) the proposed model allows us to calculate the number of asymptomatic individuals and the number of persons who presented antibodies during the first waves. The study shows that the following results are compatible with the reported data: close to 28% of the infected individuals were asymptomatic during the three waves, close to 29% of asymptomatic individuals were detected during the subsequent waves and close to 26% of the Madrid population had antibodies at the end of the third wave. This calculated number of persons with antibodies is in great agreement with four direct measurements obtained from an independent sero-epidemiological research. In addition, six calculated curves (total number of confirmed cases, asymptomatic who are confirmed as positive, hospital admissions and discharges and intensive care units admissions) show good agreement with data from an epidemiological surveillance database. [ABSTRACT FROM AUTHOR]
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- 2022
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- View/download PDF
22. On-Surface Synthesis of a Dicationic Diazahexabenzocoronene Derivative on the Au(111) Surface
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Biswas, Kalyan, Urgel, José I., Xu, Kun, Ma, Ji, Sánchez-Grande, Ana, Mutombo, Pingo, Gallardo-Caparrós, Aurelio, Lauwaet, Koen, Mallada, Benjamin, de la Torre, Bruno, Matěj, Adam, Gallego, José M., Miranda, Rodolfo, Jelínek, Pavel, Feng, Xinliang, and Écija, David
- Subjects
ddc:540 ,On-Surface-Synthese, Diazahexabenzocoronen, Nanographen ,On-Surface Synthesis, Diazahexabenzocoronene, nanographene - Abstract
The atomically precise control over the size, shape and structure of nanographenes (NGs) or the introduction of heteroatom dopants into their sp2-carbon lattice confer them valuable electronic, optical and magnetic properties. Herein, we report on the design and synthesis of a hexabenzocoronene derivative embedded with graphitic nitrogen in its honeycomb lattice, achieved via on-surface assisted cyclodehydrogenation on the Au(111) surface. Combined scanning tunneling microscopy/spectroscopy and non-contact atomic force microscopy investigations unveil the chemical and electronic structures of the obtained dicationic NG. Kelvin probe force microscopy measurements reveal a considerable variation of the local contact potential difference toward lower values with respect to the gold surface, indicative of its positive net charge. Altogether, we introduce the concept of cationic nitrogen doping of NGs on surfaces, opening new avenues for the design of novel carbon nanostructures.
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- 2021
23. Resolving Atomic‐Scale Defects in Conjugated Polymers On‐Surfaces.
- Author
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Mallada, Benjamín, Chen, Qifan, Chutora, Taras, Sánchez‐Grande, Ana, Cirera, Borja, Santos, José, Martín, Nazario, Ecija, David, Jelínek, Pavel, and de la Torre, Bruno
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CONJUGATED polymers ,ATOMIC force microscopy ,POLYMERS ,DELOCALIZATION energy ,FERMI energy ,SCANNING tunneling microscopy ,DENSITY functional theory - Abstract
Atomic scale defects significantly affect the mechanical, electronic, and optical properties of π‐conjugated polymers. Here, isolated atomic‐scale defects are deliberately introduced into a prototypical anthracene‐ethynylene π‐conjugated polymer, and its local density of states is carefully examined on the atomic scale to show how individual defects modify the inherent electronic and magnetic properties of this one‐dimensional systems. Scanning tunneling and atomic force microscopy experiments, supplemented with density functional theory calculations, reveal the existence of a sharp electronic resonance at the Fermi energy around certain defects, which is associated with the formation of a local magnetic moment accompanied by substantial mitigation of the mobility of charge carriers. While defects in traditionally synthesized polymers lead to arbitrary conformations, the presented results clearly reflect the preferential formation of low dimensional defects at specific polymer sites, which may introduce the possibility of engineering macroscopic defects in surface‐synthesized conjugated polymers. [ABSTRACT FROM AUTHOR]
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- 2022
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24. A Unified View of DI- and ETD-FDTD Methods for Drude Media.
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Pereda, Jose A. and Grande, Ana
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MICROWAVE plasmas , *FINITE difference method , *MICROWAVE communication systems , *INTEGRATORS , *FINITE difference time domain method - Abstract
A unified view of direct-integration (DI) and exponential-time-differencing (ETD) methods to incorporate Drude media, such as isotropic plasma and microwave graphene, into finite-difference time-domain (FDTD) simulators is provided. To this end, the Drude constitutive relation is expressed in integral form and the DI integrators are obtained by applying quadrature rules. Analogously, the ETD integrators are obtained by starting from the variation of constants formula and applying the same quadrature rules as in the DI case. This approach allows one to directly compare the two families of methods. In addition, the accuracy of each integrator is discussed and the stability condition of the resulting FDTD schemes is derived in exact closed form by applying the von Neumann method. [ABSTRACT FROM AUTHOR]
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- 2022
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- View/download PDF
25. Interplay between π‑Conjugation and Exchange Magnetism in One-Dimensional Porphyrinoid Polymers.
- Author
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Biswas, Kalyan, Urbani, Maxence, Sánchez-Grande, Ana, Soler-Polo, Diego, Lauwaet, Koen, Matěj, Adam, Mutombo, Pingo, Veis, Libor, Brabec, Jiri, Pernal, Katarzyna, Gallego, José M., Miranda, Rodolfo, Écija, David, Jelínek, Pavel, Torres, Tomás, and Urgel, José I.
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- 2022
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26. Surface‐Assisted Synthesis of N‐Containing π‐Conjugated Polymers.
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Sánchez‐Grande, Ana, Urgel, José I., García‐Benito, Inés, Santos, José, Biswas, Kalyan, Lauwaet, Koen, Gallego, José M., Rosen, Johanna, Miranda, Rodolfo, Björk, Jonas, Martín, Nazario, and Écija, David
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- *
CONJUGATED polymers , *SCANNING probe microscopy , *COORDINATION polymers , *POLYMERS , *SOLUTION (Chemistry) , *SONOGASHIRA reaction , *GROUP formation , *MONOMERS - Abstract
On‐surface synthesis has recently emerged as a powerful strategy to design conjugated polymers previously precluded in conventional solution chemistry. Here, an N‐containing pentacene‐based precursor (tetraazapentacene) is ex‐professo synthesized endowed with terminal dibromomethylene (:CBr2) groups to steer homocoupling via dehalogenation on metallic supports. Combined scanning probe microscopy investigations complemented by theoretical calculations reveal how the substrate selection drives different reaction mechanisms. On Ag(111) the dissociation of bromine atoms at room temperature triggers the homocoupling of tetraazapentacene units together with the binding of silver adatoms to the nitrogen atoms of the monomers giving rise to a N‐containing conjugated coordination polymer (P1). Subsequently, P1 undergoes ladderization at 200 °C, affording a pyrrolopyrrole‐bridged conjugated polymer (P2). On Au(111) the formation of the intermediate polymer P1 is not observed and, instead, after annealing at 100 °C, the conjugated ladder polymer P2 is obtained, revealing the crucial role of metal adatoms on Ag(111) as compared to Au(111). Finally, on Ag(100) the loss of :CBr2 groups affords the formation of tetraazapentacene monomers, which coexist with polymer P1. Our results contribute to introduce protocols for the synthesis of N‐containing conjugated polymers, illustrating the selective role of the metallic support in the underlying reaction mechanisms. [ABSTRACT FROM AUTHOR]
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- 2022
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27. Efectos a corto plazo de la contaminación atmosférica sobre la mortalidad: resultados del proyecto EMECAM en Madrid, 1992-1995
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Galán Labaca Iñaki, Aránguez Ruiz Emiliano, Gandarillas Grande Ana, Ordóñez Iriarte José María, and Aragonés Sanz Nuria
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Contaminación atmosférica ,Mortalidad ,Proyecto EMECAM ,Regresión de Poisson ,Medicine ,Public aspects of medicine ,RA1-1270 - Abstract
FUNDAMENTO: A pesar de los cambios producidos en las fuentes de emisión, los niveles de partículas, SO2, y CO continúan siendo importantes en el municipio de Madrid. Por otro lado, contaminantes fotoquímicos, como el NO2 y O3, están adquiriendo una importancia creciente debido al incremento del tráfico rodado y los elevados niveles de insolación que tiene esta ciudad. El objetivo de este trabajo es establecer la relación a corto plazo entre los principales contaminantes y la mortalidad diaria en el municipio de Madrid, durante el periodo de 1992 a 1995, utilizando el protocolo estandarizado del proyecto EMECAM (Estudio Multicéntrico Español de Contaminación Atmosférica y Mortalidad). MÉTODOS: Las variaciones diarias de la mortalidad por todas las causas, menos las externas, en todas las edades y en las personas de 70 años y más, así como las del aparato circulatorio y respiratorio, se asocian con las variaciones diarias de partículas (PM10), SO2, NO2, CO y O3, mediante modelos de Poisson autorregresivos. Se controlan las variables estacionalidad, tendencia, temperatura, humedad relativa, gripe, día de la semana, y días festivos e inusuales. RESULTADOS: Se observan asociaciones positivas estadísticamente significativas del SO2 con todas las series de mortalidad analizadas, del CO con la mortalidad en las personas mayores de 69 años así como con la cardiovascular y respiratoria, y de las partículas con la mortalidad cardiovascular. El NO2 también se relaciona de forma estadísticamente significativa con la mortalidad cardiovascular. Estos efectos son inmediatos, es decir, ocurren con los contaminantes del mismo día. No se observaron asociaciones positivas significativas con el O3. CONCLUSIONES: Estos resultados sugieren que, para un espectro amplio de contaminantes principales, los niveles actuales de contaminación atmosférica en el municipio de Madrid se asocian con un incremento de la mortalidad.
- Published
- 1999
28. Analysis of two alternative ADI-FDTD formulations for transverse-electric waves in lossy materials
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Pereda, Jose A., Grande, Ana, Gonzalez, Oscar, and Vegas, Angel
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Transverse waves -- Properties ,Stability -- Evaluation ,Business ,Computers ,Electronics ,Electronics and electrical industries - Abstract
A numerical dispersion analysis of the alternating-direction implicit finite-difference time-domain method for transverse-electric waves in lossy materials is presented. Two different finite-difference approximations for the conduction terms are considered: the double-average and the synchronized schemes. The numerical dispersion relation is derived in a closed form and validated through numerical simulations. This study shows that, despite its popularity, the accuracy of the double-average scheme is sensitive to how well the relaxation-time constant of the material is resolved by the time step. Poor resolutions lead to unacceptably large numerical errors. On the other hand, for good conductors, the synchronized scheme allows stability factors as large as 100 to be used without deteriorating the accuracy significantly. Index Terms--Alternating-direction implicit finite-difference time-domain (FDTD) method, lossy media, numerical dispersion, stability.
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- 2009
29. A study on the stability and numerical dispersion of the lumped-network FDTD method
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Gonzalez, Oscar, Grande, Ana, Pereda, Jose A., and Vegas, Angel
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Stability -- Evaluation ,Wave propagation -- Methods ,Wave frequency -- Evaluation ,Business ,Computers ,Electronics ,Electronics and electrical industries - Abstract
The lumped-network finite-difference time-domain (LN-FDTD) technique is an extension of the conventional FDTD method that enables the incorporation of linear one-port LNs in a single FDTD cell. This paper studies the stability and the numerical dispersion of this technique. To this end, an isotropic medium that is uniformly loaded with LNs in the x-direction is considered as a working model. The stability analysis, based on the von Neumann method, is performed for general Mth-order LNs and closed-form stability conditions are derived for some particular cases. The numerical dispersion relation is obtained for plane-wave propagation in the proposed LN-loaded medium. It is shown that LNs can be interpreted in terms of an effective frequency-dependent permittivity and, as a consequence, the LN-loaded medium can be viewed as a uniaxial medium. The numerical admittance of the LNs is also obtained showing that, as a side-effect of the time discretization, the LN parameters become frequency-dependent, e.g. for the resistor case, the resistance becomes a function of the frequency. Index Terms--Finite-difference time-domain (FDTD) methods, lumped elements, numerical dispersion, stability.
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- 2009
30. Synthesis and Characterization of peri‐Heptacene on a Metallic Surface.
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Biswas, Kalyan, Urgel, José I., Ajayakumar, M. R., Ma, Ji, Sánchez‐Grande, Ana, Edalatmanesh, Shayan, Lauwaet, Koen, Mutombo, Pingo, Gallego, José M., Miranda, Rodolfo, Jelínek, Pavel, Feng, Xinliang, and Écija, David
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METALLIC surfaces ,SCANNING tunneling microscopy ,TUNNELING spectroscopy ,ULTRAHIGH vacuum ,CHEMICAL structure ,OPTOELECTRONIC devices - Abstract
The synthesis of long n‐peri‐acenes (n‐PAs) is challenging as a result of their inherent open‐shell radical character, which arises from the presence of parallel zigzag edges beyond a certain n value. They are considered as π‐electron model systems to study magnetism in graphene nanostructures; being potential candidates in the fabrication of optoelectronic and spintronic devices. Here, we report the on‐surface formation of the largest pristine member of the n‐PA family, i.e. peri‐heptacene (n=7, 7‐PA), obtained on an Au(111) substrate under ultra‐high vacuum conditions. Our high‐resolution scanning tunneling microscopy investigations, complemented by theoretical simulations, provide insight into the chemical structure of this previously elusive compound. In addition, scanning tunneling spectroscopy reveals the antiferromagnetic open‐shell singlet ground state of 7‐PA, exhibiting singlet–triplet spin‐flip inelastic excitations with an effective exchange coupling (Jeff) of 49 meV. [ABSTRACT FROM AUTHOR]
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- 2022
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31. Anhydride Photolysis on a Semiconductor Surface.
- Author
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Frezza, Federico, Sanchez-Grande, Ana, Canola, Sofia, Mutombo, Pingo, Chen, Qifan, Ernst, Karl-Heinz, Wäckerlin, Christian, Di Giovannantonio, Marco, Nachtigallová, Dana, and Jelínek, Pavel
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- 2024
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32. On-Surface Synthesis of 2D Radical Frameworks.
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Sanchez-Grande, Ana, Frezza, Federico, Matej, Adam, Carrera, Manuel, Stetsovych, Oleksandr, Kumar, Manish, Mutombo, Pingo, Curiel, David, and Jelínek, Pavel
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- 2024
- Full Text
- View/download PDF
33. Stability and accuracy of a finite-difference time-domain scheme for modeling double-negative media with high-order rational constitutive parameters
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Grande, Ana, Pereda, Jose A., Gonzalez, Oscar, and Vegas, Angel
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Finite element method -- Usage ,Time-domain analysis -- Methods ,Microwave communications -- Research ,Business ,Computers ,Electronics ,Electronics and electrical industries - Abstract
This paper introduces an extension of the original finite-difference time-domain (FDTD) method for modeling double-negative media characterized by high-order frequency-dependent permittivity and permeability. The approach basically consists of adding electric and magnetic current densities to Maxwell's curl equations and considering Ohm's law as a constitutive relationship. Current densities are discretized by using a weighted average in time and Ohm's law by applying the Mobius transformation technique. The extended FDTD formulation is validated and its numerical features are carefully examined. More specifically, analytical stability conditions are derived for several types of double-negative media and the numerical dissipation issue is discussed. In addition, the numerical dispersion equation for general high-order double-negative media is given and the order of accuracy of the scheme is studied. Finally, the definition of numerical refractive index is addressed and it is shown that, when the discretization parameters of the problem ate not properly chosen, a negative refractive index may become a positive one in the discrete world, thus changing the physics of the problem. Index Terms--Double-negative media, finite-difference time-domain (FDTD) methods, Mobius transformation, numerical dispersion, stability.
- Published
- 2008
34. 524 LAPAROSCOPIC SLEEVE GASTRECTOMY LACKS INTRA AND INTER SURGEON AGREEMENT IN TECHNICAL KEY-POINTS THAT MAY AFFECT GASTROESOPHAGEAL REFLUX DISEASE AFTER THE PROCEDURE
- Author
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Katayama, Rafael C., Herbella, Fernando A., Arasaki, Carlos H., De Grande, Ana C., and Patti, Marco G.
- Published
- 2023
- Full Text
- View/download PDF
35. Northern Portugal literary landscapes: constructing a aatabase for the LITESCAPE.PT Project
- Author
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Grande, Ana Sofia Reis Campo and Pascoal, Sara Maria Cerqueira da Silva
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Centro de Estudos Interculturais ,Database ,Gestão ,Humanidades digitais ,LITESCAPE.PT ,Centre for Intercultural Studies ,Rota turísticas ,Tourist routes ,Base de dados ,Digital humanities - Abstract
Submitted by Iolanda Valente (ivalente@iscap.ipp.pt) on 2020-07-06T10:44:48Z No. of bitstreams: 1 Ana_Campo_Grande_MISB_2019.pdf: 9541627 bytes, checksum: b5cb22158aa5b609d644452c05ae6420 (MD5) Made available in DSpace on 2020-07-06T10:44:48Z (GMT). No. of bitstreams: 1 Ana_Campo_Grande_MISB_2019.pdf: 9541627 bytes, checksum: b5cb22158aa5b609d644452c05ae6420 (MD5) Previous issue date: 2019-12-04
- Published
- 2019
36. Height and timing of growth spurt during puberty in young people living with vertically acquired HIV in Europe and Thailand
- Author
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Crichton, Siobhan, Belfrage, Eric, Collins, Intira Jeanne, Doerholt, Katja, Judd, Ali, Le Coeur, Sophie, Spoulou, Vana, Goodall, Ruth, Scherpbier, Henriette, Smit, Colette, Goetghebuer, Tessa, Gibb, Diana M., Noguera, Antoni, Luisa Navarro, Maria, Tomas Ramos, Jose, Galli, Luisa, Giaquinto, Carlo, Thorne, Claire, Santa Ansone, Marczynska, Magdalena, Okhonskaia, Liubov, de Tejada, Begona Martinez, Jourdain, Gonzague, Decker, Luc, Ene, Luminita, Hainaut, Marc, Van der Kelen, Evelyne, Delforge, Marc, de Martino, Maurizio, Tovo, Pier Angelo, Patrizia, Osimani, Larovere, Domenico, Ruggeri, Maurizio, Faldella, Giacomo, Baldi, Francesco, Badolato, Raffaele, Montagnani, Carlotta, Venturini, Elisabetta, Lisi, Catiuscia, Di Biagio, Antonio, Taramasso, Lucia, Giacomet, Vania, Erba, Paola, Esposito, Susanna, Lipreri, Rita, Salvini, Filippo, Tagliabue, Claudia, Cellini, Monica, Bruzzese, Eugenia, Lo Vecchio, Andrea, Rampon, Osvalda, Dona, Daniele, Romano, Amelia, Dodi, Icilio, Maccabruni, Anna, Consolini, Rita, Bernardi, Stefania, Kuekou, Hyppolite Tchidjou, Genovese, Orazio, Olmeo, Paolina, Cristiano, Letizia, Mazza, Antonio, Gabiano, Clara, Garazzino, Silvia, Pellegatta, Antonio, Pajkrt, D., Scherpbier, H. J., Weijsenfeld, A. M., de Boer, C. G., Jurriaans, S., Back, N. K. T., Zaaijer, H. L., Berkhout, B., Cornelissen, M. T. E., Schinkel, C. J., Wolthers, K. C., Fraaij, P. L. A., van Rossum, A. M. C., Vermont, C. L., van der Knaap, L. C., Visser, E. G., Boucher, C. A. B., Koopmans, M. P. G., van Kampen, J. J. A., Pas, S. D., Henriet, S. S., V, van de Flier, M., van Aerde, K., Strik-Albers, R., Rahamat-Langendoen, J., Stelma, F. F., Scholvinck, E. H., de Groot-de Jonge, H., Niesters, H. G. M., van Leer-Buter, C. C., Knoester, M., Bont, L. J., Geelen, S. P. M., Wolfs, T. F. W., Nauta, N., Schuurman, R., Verduyn-Lunel, F., Wensing, A. M. J., Reiss, P., Zaheri, S., Bezemer, D. O., van Sighem, A., I, Smit, C., Wit, F. W. M. N., Hillebregt, M., de Jong, A., Woudstra, T., Bergsma, D., Grivell, S., Meijering, R., Raethke, M., Rutkens, T., de Groot, L., van den Akker, M., Bakker, Y., Bezemer, M., El Berkaoui, A., Geerlinks, J., Koops, J., Kruijne, E., Lodewijk, C., Lucas, E., van der Meer, R., Munjishvili, L., Paling, E., Peeck, B., Ree, C., Regtop, R., Ruijs, Y., van de Sande, L., Schoorl, M., Schnorr, P., Tuijn, E., Veenenberg, L., van der Vliet, S., Wisse, A., Witte, E. C., Tuk, B., Popielska, Jolanta, Pokorska-Spiewak, Maria, Oldakowska, Agnieszka, Zawadka, Konrad, Coupland, Urszula, Doroba, Malgorzata, Voronin, Evgeny, Miloenko, Milana, Labutina, Svetlana, Soler-Palacin, Pere, Antoinette Frick, Maria, Perez-Hoyos, Santiago, Mur, Antonio, Lopez, Nuria, Mendez, Maria, Mayol, Lluis, Vallmanya, Teresa, Calavia, Olga, Garcia, Lourdes, Coll, Maite, Pineda, Valenti, Rius, Neus, Rovira, Nuria, Duenas, Joaquin, Gamell, Anna, Fortuny, Claudia, Noguera-Julian, Antoni, Jose Mellado, Maria, Escosa, Luis, Garcia Hortelano, Milagros, Sainz, Talia, Isabel Gonzalez-Tome, Maria, Rojo, Pablo, Blazquez, Daniel, Prieto, Luis, Guillen, Sara, Saavedra, Jesus, Santos, Mar, Angeles Munoz, Ma, Ruiz, Beatriz, Fernandez Mc Phee, Carolina, Jimenez de Ory, Santiago, Alvarez, Susana, Angel Roa, Miguel, Beceiro, Jose, Martinez, Jorge, Badillo, Katie, Apilanez, Miren, Pocheville, Itziar, Garrote, Elisa, Colino, Elena, Gomez Sirvent, Jorge, Garzon, Monica, Roman, Vicente, Montesdeoca, Abian, Mateo, Mercedes, Jose Munoz, Maria, Angulo, Raquel, Neth, Olaf, Falcon, Lola, Terol, Pedro, Luis Santos, Juan, Moreno, David, Lendinez, Francisco, Grande, Ana, Jose Romero, Francisco, Perez, Carlos, Lillo, Miguel, Losada, Begona, Herranz, Mercedes, Bustillo, Matilde, Guerrero, Carmelo, Collado, Pilar, Antonio Couceiro, Jose, Perez, Amparo, Isabel Piqueras, Ana, Breton, Rafael, Segarra, Inmaculada, Gavilan, Cesar, Jareno, Enrique, Montesinos, Elena, Dapena, Marta, Alvarez, Cristina, Gloria Andres, Ana, Marugan, Victor, Ochoa, Carlos, Alfayate, Santiago, Isabel Menasalvas, Ana, de Miguel, Elisa, Naver, Lars, Soeria-Atmadja, Sandra, Hagas, Vendela, Aebi-Popp, K., Anagnostopoulos, A., Asner, S., Battegay, M., Baumann, M., Bernasconi, E., Boni, J., Braun, D. L., Bucher, H. C., Calmy, A., Cavassini, M., Ciuffi, A., Duppenthaler, A., Dollenmaier, G., Egger, M., Elzi, L., Fehr, J., Fellay, J., Francini, K., Furrer, H., Fux, C. A., Grawe, C., Gunthard, H. F., Haerry, D., Hasse, B., Hirsch, H. H., Hoffmann, M., Hosli, I, Huber, M., Kahlert, C. R., Kaiser, L., Keiser, O., Klimkait, T., Kottanattu, L., Kouyos, R. D., Kovari, H., Ledergerber, B., Martinetti, G., de Tejada, Martinez B., Marzolini, C., Metzner, K. J., Mueller, N., Nicca, D., Paioni, P., Pantaleo, G., Perreau, M., Polli, Ch, Rauch, A., Rudin, C., Scherrer, A. U., Schmid, P., Speck, R., Stockle, M., Tarr, P., Lecompte, Thanh M., Trkola, A., Vernazza, P., Wagner, N., Wandeler, G., Weber, R., Wyler, C. A., Yerly, S., Wannarit, Pornpun, Techakunakorn, Pornchai, Hansudewechakul, Rawiwan, Wanchaitanawong, Vanichaya, Theansavettrakul, Sookchai, Nanta, Sirisak, Ngampiyaskul, Chaiwat, Phanomcheong, Siriluk, Hongsiriwon, Suchat, Karnchanamayul, Warit, Kwanchaipanich, Ratchanee, Kanjanavanit, Suparat, Kamonpakorn, Nareerat, Nantarukchaikul, Maneeratn, Layangool, Prapaisri, Mekmullica, Jutarat, Lucksanapisitkul, Paiboon, Watanayothin, Sudarat, Lertpienthum, Narong, Warachit, Boonyarat, Hanpinitsak, Sansanee, Potchalongsin, Sathit, Thanasiri, Pimpraphai, Krikajornkitti, Sawitree, Attavinijtrakarn, Pornsawan, Srirojana, Sakulrat, Bunjongpak, Suthunya, Puangsombat, Achara, Na-Rajsima, Sathaporn, Ananpatharachai, Pornchai, Akarathum, Noppadon, Lawtongkum, Weerasak, An, Prapawan Kheunj, Suriyaboon, Thitiporn, Saipanya, Airada, Than-in-at, Kanchana, Jaisieng, Nirattiya, Suaysod, Rapeepan, Chailoet, Sanuphong, Naratee, Naritsara, Kawilapat, Suttipong, Lyall, Hermione, Bamford, Alasdair, Butler, Karim, Doherty, Conor, Foster, Caroline, Francis, Kate, Harrison, Ian, Kenny, Julia, Klein, Nigel, Letting, Gillian, McMaster, Paddy, Murau, Fungai, Nsangi, Edith, Peters, Helen, Prime, Katia, Riordan, Andrew, Shackley, Fiona, Shingadia, Delane, Storey, Sharon, Tudor-Williams, Gareth, Turkova, Anna, Welch, Steve, Collins, Intira Jeannie, Cook, Claire, Dobson, Donna, Fairbrother, Keith, Harper, Lynda, Le Prevost, Marthe, Van Looy, Nadine, Butler, K., Walsh, A., Thrasyvoulou, L., Welch, S., Bernatoniene, J., Manyika, F., Sharpe, G., Subramaniam, B., Sloper, K., Fidler, K., Hague, R., Price, V, Clapson, M., Flynn, J., Abou-Rayyah, A. Cardoso M., Klein, N., Shingadia, D., Gurtin, D., Yeadon, S., Segal, S., Ball, C., Hawkins, S., Dowie, M., Bandi, S., Percival, E., Eisenhut, M., Duncan, K., Clough, S., Anguvaa, L., Conway, S., Flood, T., Pickering, A., Murphy, P. McMaster C., Daniels, J., Lees, Y., Thompson, F., Williams, B., Pope, S., Cliffe, L., Smyth, A., Southall, S., Freeman, A., Freeman, H., Christie, S., Gordon, A., Clarke, D. Rogahn L., Jones, L., Offerman, B., Greenberg, M., Benson, C., Riordan, A., Ibberson, L., Shackley, F., Faust, S. N., Hancock, J., Doerholt, K., Prime, K., Sharland, M., Storey, S., Lyall, H., Monrose, C., Seery, P., Tudor-Williams, G., Menson, E., Callaghan, A., Bridgwood, A., McMaster, P., Evans, J., Blake, E., Yannoulias, A., European Pregnancy Paediat HIV Coh, Microbes in Health and Disease (MHD), Fundación Investigación y Educación en Sida, Instituto de Salud Carlos III, European Commission, Fundación Mutua Madrileña, Épidémiologie clinique, santé mère-enfant et VIH en Asie du Sud-Est (IRD_PHPT), Harvard University [Cambridge]-Chiang Mai University (CMU), Pediatrics, and Virology
- Subjects
0301 basic medicine ,Male ,Pediatrics ,puberty ,[SDV]Life Sciences [q-bio] ,humanos ,Human immunodeficiency virus (HIV) ,adolescente ,LETTONIE ,CHILDREN ,HIV Infections ,medicine.disease_cause ,GRECE ,desarrollo del niño ,Cohort Studies ,0302 clinical medicine ,Child Development ,CHILD_DEVELOPMENT ,[SDV.MHEP.MI]Life Sciences [q-bio]/Human health and pathology/Infectious diseases ,ADOLESCENTS ,Immunology and Allergy ,Pooled data ,030212 general & internal medicine ,SUEDE ,Child ,estudios de cohortes ,ESPAGNE ,11 Medical and Health Sciences ,Anthropometry ,THAILANDE ,Europe ,growth ,height ,HIV ,perinatal ,Thailand ,Adolescent ,Anti-Retroviral Agents ,Child, Preschool ,Female ,Humans ,Infant ,Puberty ,virus diseases ,Growth spurt ,PAYS BAS ,3. Good health ,17 Psychology and Cognitive Sciences ,AIDS ,antirretrovirales ,Infectious Diseases ,POLOGNE ,BELGIQUE ,Life Sciences & Biomedicine ,medicine.medical_specialty ,Pediatric hiv ,Epidemiology and Social ,ROYAUME UNI ,Immunology ,MASS ,European Pregnancy and Paediatric HIV Cohort Collaboration (EPPICC) study group ,03 medical and health sciences ,SDG 3 - Good Health and Well-being ,Virology ,medicine ,pubertad ,Preschool ,lactante ,ROUMANIE ,Science & Technology ,business.industry ,06 Biological Sciences ,VELOCITY ,SUISSE ,Regimen ,030104 developmental biology ,VIRAL LOAD ,antropometría ,infecciones por VIH ,BODY_HEIGHT ,business ,IRLANDE ,[SDV.MHEP]Life Sciences [q-bio]/Human health and pathology - Abstract
The European Pregnancy and Paediatric HIV Cohort Collaboration (EPPICC) study group., [Objective]: The aim of this study was to describe growth during puberty in young people with vertically acquired HIV. [Design]: Pooled data from 12 paediatric HIV cohorts in Europe and Thailand. [Methods]: One thousand and ninety-four children initiating a nonnucleoside reverse transcriptase inhibitor or boosted protease inhibitor based regimen aged 1–10 years were included. Super Imposition by Translation And Rotation (SITAR) models described growth from age 8 years using three parameters (average height, timing and shape of the growth spurt), dependent on age and height-for-age z-score (HAZ) (WHO references) at antiretroviral therapy (ART) initiation. Multivariate regression explored characteristics associated with these three parameters. [Results]: At ART initiation, median age and HAZ was 6.4 [interquartile range (IQR): 2.8, 9.0] years and −1.2 (IQR: −2.3 to −0.2), respectively. Median follow-up was 9.1 (IQR: 6.9, 11.4) years. In girls, older age and lower HAZ at ART initiation were independently associated with a growth spurt which occurred 0.41 (95% confidence interval 0.20–0.62) years later in children starting ART age 6 to 10 years compared with 1 to 2 years and 1.50 (1.21–1.78) years later in those starting with HAZ less than −3 compared with HAZ at least −1. Later growth spurts in girls resulted in continued height growth into later adolescence. In boys starting ART with HAZ less than −1, growth spurts were later in children starting ART in the oldest age group, but for HAZ at least −1, there was no association with age. Girls and boys who initiated ART with HAZ at least −1 maintained a similar height to the WHO reference mean. [Conclusion]: Stunting at ART initiation was associated with later growth spurts in girls. Children with HAZ at least −1 at ART initiation grew in height at the level expected in HIV negative children of a comparable age., This work has been partially funded by the Fundación para la Investigación y Prevención de SIDA en España (FIPSE) (FIPSE 3608229/09, FIPSE 240800/09, FIPSE 361910/10), Red Temática de Investigación en SIDA (RED RIS) supported by Instituto de Salud Carlos III (ISCIII) (RD12/0017/0035 and RD12/0017/0037), project as part of the Plan R+D+I and cofinanced by ISCIII- Subdirección General de Evaluación and Fondo Europeo de Desarrollo Regional (FEDER),Mutua Madrileña 2012/0077, Gilead Fellowship 2013/0071, FIS PI15/00694,CoRISpe (RED RIS RD06/0006/0035 y RD06/0006/0021).
- Published
- 2019
37. A multiresolution model of transient microwave signals in dispersive chiral media
- Author
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Barba, Ismael, Grande, Ana, Cabeceira, Ana Cristina L., and Represa, Jose
- Subjects
Chirality -- Research ,Wave propagation -- Research ,Time-domain analysis ,Business ,Computers ,Electronics ,Electronics and electrical industries - Abstract
A multiresolution in time domain method is used to model the propagation of transient signals through dispersive chiral media. The modeling of these media requires the computation of convolution integrals, whose resolution level may be increased by introducing wavelets in the time dependence of the fields. Index Terms--Bi-isotropic (BI) media, chiral media, dispersive media, multiresolution, multiresolution in time domain (MRTD) methods.
- Published
- 2006
38. FDTD modeling of transient microwave signals in dispersive and lossy bi-isotropic media
- Author
-
Grande, Ana, Barba, Ismael, Cabeceira, Ana C.L., Represa, Jose, So, Poman P.M., and Hoefer, Wolfgang J.R.
- Subjects
Microwave devices -- Research ,Business ,Computers ,Electronics ,Electronics and electrical industries - Abstract
In this paper, we present a novel finite-difference time-domain model of transient wave propagation in general dispersive bi-isotropic media with losses. The special properties of these materials may lead to new applications in microwave and millimeter-wave technology. While their frequency-domain properties have been well described in the literature, their time-domain behavior has only been modeled thus far for special sub-classes and monochromatic time dependence. We have validated our method by first computing time-harmonic wave propagation through a bi-isotropic medium and comparing it with analytical results. Agreement is typically better than 1%. We have then computed transient field propagation in a general lossy dispersive bi-isotropic medium. Index Terms--Chiral media, dispersive media, finite-difference time-domain (FDTD) methods, perturbation methods, transient propagation
- Published
- 2004
39. Electrically Tunable Reactivity of Substrate‐Supported Cobalt Oxide Nanocrystals.
- Author
-
Sánchez‐Grande, Ana, Nguyën, Huu Chuong, Lauwaet, Koen, Rodríguez‐Fernández, Jonathan, Carrasco, Esther, Cirera, Borja, Sun, Zhaozong, Urgel, José Ignacio, Miranda, Rodolfo, Lauritsen, Jeppe V., Gallego, José M., López, Nuria, and Écija, David
- Published
- 2022
- Full Text
- View/download PDF
40. Smoking attributable mortality in the community of Madrid: 1992–1998
- Author
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Zorrilla-Torras, Belén, García-Marín, Natividad, Galán-Labaca, Iñaki, and Gandarillas-Grande, Ana
- Published
- 2005
41. CONTROL DE LA DIABETES MELLITUS EN POBLACIÓN ADULTA SEGÚN LAS CARACTERÍSTICAS DEL PERSONAL DE ENFERMERÍA DE ATENCIÓN PRIMARIA DE LA COMUNIDAD DE MADRID: ANÁLISIS MULTINIVEL
- Author
-
Parro Moreno,Ana, Santiago Pérez,Mª Isolina, Abraira Santos,Victor, Aréjula Torres,José Luis, Díaz Holgado,Antonio, Gandarillas Grande,Ana, Morales Asencio,José Miguel, and Serrano Gallardo,Pilar
- Subjects
Diabetes mellitus ,Analisis multivariante ,Atención primaria de salud ,lcsh:Public aspects of medicine ,lcsh:R ,Análisis multinivel ,lcsh:Medicine ,lcsh:RA1-1270 ,Ambiente de trabajo ,Personal de enfermería - Abstract
La actividad de enfermería está condicionada por las ca - racterísticas de la plantilla. El objetivo fue determinar cómo afectan las caracte - rísticas de la plantilla de enfermería de atención primaria (AP) al control de la diabetes mellitus (DM) en personas adultas. Método: Estudio analítico transversal. Instrumentos para la recogida de datos: sistemas de información de AP y cuestionario PES-Nursing Work Index . Participantes: 44.214 pacientes diabéticos en dos zonas de salud de la Comuni - dad de Madrid: Zona Noroeste (ZNO) con mejor situación socioeconómica y Zona Suroeste (ZSO) con peor situación socioeconómica y los 507 profesionales de enfermería de referencia. Se realizaron análisis multivariantes multinivel de regresión logística. La variable dependiente fue la DM estaba mal controlada (cuando los valores de Hb1Ac eran ≥ a 7%) Resultados: La prevalencia DM mal controlada fue de 40,1% (IC95%:38,2- 42,1). Existía un riesgo de un 25% más de peor control si el paciente cambiaba de centro de salud y de un 27% si cambiaba de pareja médico de cabaecera y enfermera. En los modelos de regresión logística multivariante multinivel: para la ZSO a mayor ratio de pacientes mayores de 65 años aumentaba el riesgo de mal control (OR=1,00008 [IC95%:1,00006-1,001]); a mayor proporción de pa - cientes sin seguimiento por centro de salud peor control (OR=5,1 [IC95%:1,6- 15,6]). En los dos modelos por zona de salud, la condición de ser inmigrante económico aumentó el riesgo de mal control, ZSO (OR=1,3 [IC95%:1,03-1,7]); y ZNO (OR=1,29 [IC95%:1,03-1,6]). Conclusiones: Son factores de riesgo de tener mal controlada la diabetes mellitus la mayor proporción de pacientes mayores de 65 años por enfermera, ser inmigrante y la proporción de pacientes sin seguimiento.
- Published
- 2016
42. Unravelling the Open-Shell Character of Peripentacene on Au(111).
- Author
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Sánchez-Grande, Ana, Urgel, José I., Veis, Libor, Edalatmanesh, Shayan, Santos, José, Lauwaet, Koen, Mutombo, Pingo, Gallego, José M., Brabec, Jiri, Beran, Pavel, Nachtigallová, Dana, Miranda, Rodolfo, Martín, Nazario, Jelínek, Pavel, and Écija, David
- Published
- 2021
- Full Text
- View/download PDF
43. On-surface synthesis of doubly-linked one-dimensional pentacene ladder polymers.
- Author
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Biswas, Kalyan, Urgel, José I., Sánchez-Grande, Ana, Edalatmanesh, Shayan, Santos, José, Cirera, Borja, Mutombo, Pingo, Lauwaet, Koen, Miranda, Rodolfo, Jelínek, Pavel, Martín, Nazario, and Écija, David
- Subjects
SCANNING tunneling microscopy ,PENTACENE ,ATOMIC force microscopy ,POLYMERS ,TUNNELING spectroscopy ,ULTRAHIGH vacuum ,CONJUGATED polymers - Abstract
On-surface synthesis has recently become an essential approach toward the formation of carbon-based nanostructures. Special emphasis is set on the synthesis of π-conjugated polymers taking into consideration their relevance and potential in organic electronics, optoelectronics and spintronics. Here, we report the on-surface synthesis of conjugated ladder polymers consisting of pentacene units doubly-linked via ethynylene-like bonds on the Au(111) surface under ultra-high vacuum conditions. To this aim, we have sublimed pentacene-like precursors equipped with four :CBr
2 functional groups to steer the desired reaction upon annealing on the surface. The atomically precise structure of the obtained polymers has been unambiguously characterized via low-temperature scanning tunneling microscopy and non-contact atomic force microscopy. In addition, scanning tunneling spectroscopy complemented with density-functional theory calculations reveal the narrow bandgap of the polymer. Our results provide potential for the synthesis of π-conjugated polymers with prospects in functional carbon-based nanomaterials that exploit multiple connections between molecular backbones. [ABSTRACT FROM AUTHOR]- Published
- 2020
- Full Text
- View/download PDF
44. Oligomerization and Cell-Binding Properties of the Avian Reovirus Cell-Attachment Protein ςC
- Author
-
Grande, Ana, Rodriguez, Eduardo, Costas, Celina, Everitt, Einar, and Benavente, Javier
- Published
- 2000
- Full Text
- View/download PDF
45. Diradical Organic One‐Dimensional Polymers Synthesized on a Metallic Surface.
- Author
-
Sánchez‐Grande, Ana, Urgel, José I., Cahlík, Aleš, Santos, José, Edalatmanesh, Shayan, Rodríguez‐Sánchez, Eider, Lauwaet, Koen, Mutombo, Pingo, Nachtigallová, Dana, Nieman, Reed, Lischka, Hans, Torre, Bruno, Miranda, Rodolfo, Gröning, Oliver, Martín, Nazario, Jelínek, Pavel, and Écija, David
- Subjects
- *
SCANNING probe microscopy , *POLYMERS , *METALLIC surfaces , *SCANNING tunneling microscopy , *MAGNETIC transitions , *MAGNETIC properties - Abstract
We report on the synthesis and characterization of atomically precise one‐dimensional diradical peripentacene polymers on a Au(111) surface. By means of high‐resolution scanning probe microscopy complemented by theoretical simulations, we provide evidence of their magnetic properties, which arise from the presence of two unpaired spins at their termini. Additionally, we probe a transition of their magnetic properties related to the length of the polymer. Peripentacene dimers exhibit an antiferromagnetic (S=0) singlet ground state. They are characterized by singlet–triplet spin‐flip inelastic excitations with an effective exchange coupling (Jeff) of 2.5 meV, whereas trimers and longer peripentacene polymers reveal a paramagnetic nature and feature Kondo fingerprints at each terminus due to the unpaired spin. Our work provides access to the precise fabrication of polymers featuring diradical character which are potentially useful in carbon‐based optoelectronics and spintronics. [ABSTRACT FROM AUTHOR]
- Published
- 2020
- Full Text
- View/download PDF
46. Pseudospectral frequency‐domain analysis of rectangular waveguides filled by dielectrics whose permittivity varies continuously along the broad dimension.
- Author
-
Pereda, José A. and Grande, Ana
- Subjects
- *
RECTANGULAR waveguides , *FREQUENCY-domain analysis , *PERMITTIVITY , *CHEBYSHEV polynomials , *FINITE difference method , *COLLOCATION methods , *DIELECTRIC waveguides - Abstract
The calculation of dispersion diagrams and field patterns of metallic rectangular waveguides filled with an inhomogeneous dielectric whose permittivity varies continuously along the broad size of the guide is considered. In general, this problem has no exact solution, thus numerical techniques should be used. In this article, the pseudospectral frequency‐domain (PSFD) method is proposed to address the problem. Starting from the Helmholtz equation, a matrix eigenvalue problem is obtained by applying the collocation technique with Chebyshev polynomials as basis functions. The results obtained are compared with those calculated by the conventional finite‐difference frequency‐domain method showing that the PSFD technique provides an excellent accuracy. [ABSTRACT FROM AUTHOR]
- Published
- 2020
- Full Text
- View/download PDF
47. Analysis of Homogeneous Waveguides via the Meshless Radial Basis Function-Generated-Finite-Difference Method.
- Author
-
Pereda, Jose A. and Grande, Ana
- Abstract
The radial basis function-generated-finite-difference (RBF-FD) method is applied to the analysis of homogenous waveguides. To this end, the Helmholtz equation and the boundary conditions are collocated on the waveguide cross section. At each collocation node, derivatives are locally approximated by the RBF-FD formulas based on the polyharmonic splines supplemented with high-degree polynomials. As a result, a sparse matrix eigenvalue problem is obtained, which allows cutoff wavenumbers and axial fields to be calculated. To illustrate the accuracy of the method, we consider a semicircular and an eccentric circular waveguide. [ABSTRACT FROM AUTHOR]
- Published
- 2020
- Full Text
- View/download PDF
48. On‐Surface Synthesis of Ethynylene‐Bridged Anthracene Polymers.
- Author
-
Sánchez‐Grande, Ana, de la Torre, Bruno, Santos, José, Cirera, Borja, Lauwaet, Koen, Chutora, Taras, Edalatmanesh, Shayan, Mutombo, Pingo, Rosen, Johanna, Zbořil, Radek, Miranda, Rodolfo, Björk, Jonas, Jelínek, Pavel, Martín, Nazario, and Écija, David
- Subjects
- *
CONJUGATED polymers , *ANTHRACENE , *SOLUBILITY , *MOIETIES (Chemistry) , *REACTION mechanisms (Chemistry) , *CHEMICAL reactions - Abstract
Engineering low‐band‐gap π‐conjugated polymers is a growing area in basic and applied research. The main synthetic challenge lies in the solubility of the starting materials, which precludes advancements in the field. Here, we report an on‐surface synthesis protocol to overcome such difficulties and produce poly(p‐anthracene ethynylene) molecular wires on Au(111). To this aim, a quinoid anthracene precursor with =CBr2 moieties is deposited and annealed to 400 K, resulting in anthracene‐based polymers. High‐resolution nc‐AFM measurements confirm the nature of the ethynylene‐bridge bond between the anthracene moieties. Theoretical simulations illustrate the mechanism of the chemical reaction, highlighting three major steps: dehalogenation, diffusion of surface‐stabilized carbenes, and homocoupling, which enables the formation of an ethynylene bridge. Our results introduce a novel chemical protocol to design π‐conjugated polymers based on oligoacene precursors and pave new avenues for advancing the emerging field of on‐surface synthesis. [ABSTRACT FROM AUTHOR]
- Published
- 2019
- Full Text
- View/download PDF
49. A Full-Dielectric Chiral Material Based on a Honeycomb Structure.
- Author
-
Barba, Ismael, Grande, Ana, Molina-Cuberos, Gregorio J., García-Collado, Ángel J., Represa, José, and Cabeceira, Ana C. L.
- Subjects
DIELECTRIC materials ,ELECTROMAGNETISM ,HONEYCOMB structures ,CIRCULAR dichroism ,METAMATERIALS - Abstract
A uniaxial bianisotropic, full-dielectric structure has been designed and numerically studied. The material is based on a previously published 2D-honeycomb structure. A 3D expansion leads to an effective metamaterial showing a typical chiral electromagnetic behavior, i.e., a resonant electromagnetic activity with a small circular dichroism. [ABSTRACT FROM AUTHOR]
- Published
- 2018
- Full Text
- View/download PDF
50. Sculpturing as an approach to train holistic thinking and perception in the medical curriculum
- Author
-
Frei, Martin, Grande, Ana Cristina, and Wolf, Ursula
- Subjects
610 Medicine & health - Published
- 2011
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