M. Campos‐Vallette, R. E. Clavijo, Fernando Mendizábal, Walter Zamudio, Ruth Baraona, G. Díaz,
FT-IR spectra of the title compounds and derivatives were measured in the range 4000–120 cm−1. A complete experimental spectral assignment has been performed. A simplified normal coordinate treatment orientates some assignment of frequencies in the low energy region. Bands at ca. 420 and 300 cm−1 are ascribed to the vCu-N modes. A stability order of the Cu(I) complexes is proposed on the basis of their Cu-N frequency values.
Tópico(s): Porphyrin and Phthalocyanine Chemistry
1996 - Elsevier BV | Vibrational Spectroscopy
Felipe Jiménez, Miguel Clavijo, Fernando Castellanos, José-Carlos Álvarez-Feal,
Road vehicle lateral positioning is a key aspect of many assistance applications and autonomous driving. However, conventional GNSS-based positioning systems and fusion with inertial systems are not able to achieve these levels of accuracy under real traffic conditions. Onboard perception systems provide knowledge of the surroundings of the vehicle, and some algorithms have been proposed to detect road boundaries and lane lines. This information could be used to locate the vehicle in the lane. However, ...
Tópico(s): Robotics and Sensor-Based Localization
2018 - Multidisciplinary Digital Publishing Institute | Applied Sciences
David Feldman, Michael J. S. Bruno, Stanley Fischer, Elhanan Helpman, Nissan Liviatan, Leora Meridor,
... growth with price stability, Guillermo Ortiz: comments by Fernando Clavijo comments by Sylvia Piterman general discussion. Part 8 ...
Tópico(s): Global Financial Crisis and Policies
1992 - Wiley | Southern Economic Journal
Riccardo Faini, Fernando Clavijo, Abdel Senhadji-Semlali,
The constraints imposed upon LDCs' export growth by international demand have been the subject of a long-standing controversy. In this paper we present estimates of manufactures export demand functions for 23 LDCs. We focus first on the constraints that the international environment imposes upon export growth for an individual LDC. To this purpose the small country hypothesis of an infinitely elastic export demand is tested and the claim that supply factors play a determinant role in affecting export ...
Tópico(s): Global Trade and Competitiveness
1992 - Elsevier BV | European Economic Review
Fernando Clavijo-Coppens, Issa Diédhiou, Virginie Vaissayre, Laurent Brottier, Jennifer Acolatse, Daniel Moukouanga, Amandine Crabos, Florence Auguy, Claudine Franche, Hassen Gherbi, Antony Champion, Valérie Hocher, David G. Barker, Didier Bogusz, Louis S. Tisa, Sergio Svistoonoff,
Summary Root nodule symbioses ( RNS ) allow plants to acquire atmospheric nitrogen by establishing an intimate relationship with either rhizobia, the symbionts of legumes or Frankia in the case of actinorhizal plants. In legumes, NIN ( Nodule IN ception) genes encode key transcription factors involved in nodulation. Here we report the characterization of Cg NIN , a NIN gene from the actinorhizal tree Casuarina glauca using both phylogenetic analysis and transgenic plants expressing either Pro Cg NIN ::reporter ...
Tópico(s): Agronomic Practices and Intercropping Systems
2015 - Wiley | New Phytologist
Thomas Roscoe, Virginie Vaissayre, Gaël Paszkiewicz, Fernando Clavijo-Coppens, Z Kelemen, Caroline Michaud, Loı̈c Lepiniec, Bertrand Dubreucq, Dao‐Xiu Zhou, Martine Devic,
FUSCA3 (FUS3) is a master regulator of seed development important in establishing and maintaining embryonic identity whose expression is tightly regulated at genetic and epigenetic levels. Despite this prominent role, the control of FUS3 expression remains poorly understood. Promoter and functional complementation analyses provided insight into the regulation of FUS3. W-boxes present in the promoter proximal to the start of transcription are recognized by WRKY type-1 factors which are necessary for ...
Tópico(s): Plant tissue culture and regeneration
2018 - Oxford University Press | Plant and Cell Physiology
Fernando Clavijo-Coppens, Nicolas Ginet, Sophie Cesbron, Martial Briand, Marie‐Agnès Jacques, Mireille Ansaldi,
Xylella fastidiosa (Xf) is a plant pathogen causing significant losses in agriculture worldwide. Originating from America, this bacterium caused recent epidemics in southern Europe and is thus considered an emerging pathogen. As the European regulations do not authorize antibiotic treatment in plants, alternative treatments are urgently needed to control the spread of the pathogen and eventually to cure infected crops. One such alternative is the use of phage therapy, developed more than 100 years ...
Tópico(s): Insect symbiosis and bacterial influences
2021 - Multidisciplinary Digital Publishing Institute | Viruses
Melisa Escosteguy, Araceli Clavijo, Walter Fernando Díaz Paz, Marc Hufty, Lucas Seghezzo,
In October 2021, the government of Catamarca, a province located in Northern Argentina, announced the beginning of a consultation process to debate about a lithium mining project located in the Salar del Hombre Muerto. According to several laws and international treaties passed by Argentina, before any program, project or law that affect Indigenous peoples, their territories and resources, a Free Prior and Informed Consent (FPIC) consultation has to be held. In Argentina, the provinces are in charge ...
Tópico(s): Indigenous Cultures and History
2022 - Elsevier BV | The Extractive Industries and Society
... articles citing this article:Laura Montes de Oca, Fernando Pérez-Miles, Sabrina Clavijo-Baquet The reproductive period of tarantulas is constrained ...
Tópico(s): Insect and Arachnid Ecology and Behavior
1928 - University of Chicago Press | The Quarterly Review of Biology
Miguel Saavedra, M. Campos‐Vallette, R. E. Clavijo, Fernando Mendizábal, G. Díaz, José Vicente Garcı́a-Ramos, Santiago Sánchez‐Cortés,
Fourier transform infrared spectroscopy (FTIR), reflection–absorption infrared spectroscopy (RAIRS) and surface-enhanced Raman spectroscopy (SERS) were applied to study the adsorption of the macrocycle sub-2,3-boronnaphthalocyanine chlorine (subBClNPc) on surfaces of different nature. The analysis of the results obtained with the above techniques as well as a semiempirical calculation suggest the existence of a significant although weak adsorbate–substrate interaction and that the compound is oriented ...
Tópico(s): Spectroscopy and Quantum Chemical Studies
2003 - Elsevier BV | Vibrational Spectroscopy
D. Mellado, Emílio José González Clavijo, Fernando Tornos, Carmen Conde,
Tópico(s): Geological and Geophysical Studies Worldwide
2006 - | Geogaceta
Mariano Oyarzábal, José Clavijo, Luis J. Oakley, Fernando Biganzoli, Pedro M. Tognetti, Ignacio M. Barberis, Hernán M. Maturo, Roxana Aragón, Paula I. Campanello, Darién E. Prado, Martı́n Oesterheld, Rolando J.C. León,
There are numerous maps of the spontaneous vegetation of Argentina. However, a country-level map with enough detail to discriminate vegetation units within the phytogeographic provinces described by Cabrera (1976) is lacking. We analyzed vegetation descriptions published in recent decades, with special attention to those that produced physiognomic-floristic maps. As a result of this analysis, here we present a physiognomic-floristic map of spontaneous vegetation of Argentina that shows the heterogeneity ...
Tópico(s): Ecology and Vegetation Dynamics Studies
2018 - | Ecología Austral
Mario A. Torres‐Acosta, Viviana Clavijo, Christopher Vaglio, Andrés Fernando González Barrios, Martha J. Vives, Marco Rito‐Palomares,
Abstract Poultry products are one of the major transmission media of Salmonella enteritidis to humans. A promising alternative to reduce the load of Salmonella in poultry are bacteriophages. Elsewhere, a mixture of six bacteriophages has been used successfully, but large‐scale production would be necessary to supply potential poultry market and costs analyses have not been calculated yet. For this, a powerful tool to predict production costs is bioprocess modeling coupled with economic analyses. ...
Tópico(s): Viral gastroenteritis research and epidemiology
2019 - American Chemical Society | Biotechnology Progress
Araceli Clavijo, Walter Fernando Díaz Paz, Mauricio Lorca, Manuel Olivera Andrade, Martín Alejandro Iribarnegaray, Ingrid Garcés,
Lithium is a key element in the new energy paradigm. In the Lithium Triangle countries, extractive pressure has increased considerably in the last decade. Lithium from salt flat mines could become a development driver for the region, but what is the real impact of the activity? Are all the cards on the table? To explore these questions, this article analyses the transparency and availability of environmental information on lithium mining from the framework of environmental governance. It finds that ...
Tópico(s): Mining and Resource Management
2022 - Taylor & Francis | Journal of Energy & Natural Resources Law
En‐Min Zhou, Deidre Ridd, J. Riva, Lisa Fernando, Alfonso Clavijo,
An IgM-capture enzyme-linked immunosorbent assay (ELISA) was developed for the detection of recent infection of bluetongue virus (BTV) in cattle. The test is based on the use of biotinylated capture anti-bovine IgM antibodies bound to a streptavidin-coated ELISA plate. The captured IgM antibodies were detected by application of BTV VP7 antigen and a VP7 antigen-specific monoclonal antibody. The IgM-capture ELISA was compared with the competitive ELISA by testing serum samples from groups of calves ...
Tópico(s): T-cell and Retrovirus Studies
2001 - Elsevier BV | Journal of Virological Methods
John P. Wagner, Fernando Rangel Clavijo,
Tópico(s): Electrical and Bioimpedance Tomography
2000 - Elsevier BV | Journal of Electrostatics
António Azor, Ícaro Días da Silva, Juan Gómez Barreiro, Emílio González Clavijo, José R. Martı́nez Catalán, José Fernando Simancas, D. Martínez Poyatos, Irene Pérez-Cáceres, Francisco González Lodeiro, Inmaculada Expósito, Josep Maria Casas, Pilar Clariana, Joaquı́n Garcı́a-Sansegundo, Aina Margalef,
The Variscan deformation in the Iberian Massif is related to the large-scale plate tectonic scenario that drove to the destruction of the Rheic and other intervening oceans, to finally form the Pangea Supercontinent. The Northern Iberian Massif structure consists in an East-vergent orogenic wedge developed at the footwall of a rootless oceanic suture. The collisional architecture of this wedge has been strongly modified by extensional tectonics in the hinterland and orocline formation affecting ...
Tópico(s): earthquake and tectonic studies
2019 - Springer International Publishing | Regional geology reviews
Marı́a del Rosario Brunetto, Y. Contreras, Sabrina Clavijo, Dina Torres, Yelitza Delgado, Fernando Ovalles, Carlos Ayala, Máximo Gallignani, José Manuel Estela, Victor Cerdà Martín,
Column-switching high-performance liquid chromatographic (HPLC) method has been developed and validated for quantification of losartan, telmisartan, and valsartan in human urine. Urine samples were diluted on the extraction mobile phase (1:4, v/v) and a volume of 20 μL of this mixture were directly injected onto the HPLC system. The analytes were extracted from the matrix using an on-line solid-phase extraction procedure involving a precolumn packed with 25 μm C18 alkyl-diol support (ADS), and a solution ...
Tópico(s): Analytical Chemistry and Chromatography
2009 - Elsevier BV | Journal of Pharmaceutical and Biomedical Analysis
Mariano Oyarzábal, José Clavijo, Luis J. Oakley, Fernando Biganzoli, Pedro M. Tognetti, Ignacio M. Barberis, Hernán M. Maturo, Roxana Aragón, Paula I. Campanello, Darién E. Prado, Martı́n Oesterheld, Rolando J.C. León,
Existen numerosos mapas de la vegetacion espontanea de la Argentina. Sin embargo, no contamos aun con uno de todo el pais con una resolucion que permita distinguir unidades de vegetacion dentro de las provincias fitogeograficas descriptas por Cabrera (1946). Analizamos las descripciones de vegetacion publicadas en las ultimas decadas, con especial atencion sobre aquellas que produjeron mapas fisonomico-floristicos. Como resultado de ese analisis, presentamos aqui un mapa fisonomico-floristico de ...
Tópico(s): Plant Diversity and Evolution
2018 - | Ecología Austral
M. Campos‐Vallette, R.E Clavijo C, Fernando Mendizábal, G Diaz F, J. Costamagna, J. Canales, J. Vargas,
The FTIR and Raman spectra of the hexaazacyclophane Cu(II) complex were recorded, and analyzed from a normal coordinate treatment by using an extended number of internal coordinates. The CuN force constant equal to 1.0 mdyn Å−1 represents satisfactorily the CuN bonding. Bond orders and total charge density for the metal free macrocycle and the complex were calculated within the molecular orbital theory framework at the INDO/1 level. Semiempirical results suggest a high electronic density on the ...
Tópico(s): Molecular Junctions and Nanostructures
1997 - Elsevier BV | Vibrational Spectroscopy
F. Gérard Adams, Fernando Clavijo, Renzo Orsi,
This paper outlines a new econometric model of Belgium, ANELISE, developed at the Unité d’analyse Economique (ANEC), Institut des Sciences Economiques at the Université Catholique de Louvain during the spring of 1973. This model responds to needs for a simple structural representation of the Belgian economy useful for academic studies, for a short term prediction, and for policy analysis. This is intended as the first stage of a live project which will see evolution of the model as it is tested, ...
Tópico(s): Fiscal Policies and Political Economy
1973 - | Recherches économiques de Louvain
Produção Nacional
Revisado por pares
Nelson Fernando Santana-Clavijo, Diana Patricia Reyes Romero, Darío Fajardo, A. Velandia Muñoz, Sueli Akemi Taniwaki, S.O. de Souza Silva, Paulo Eduardo Brandão,
Alphacoronavirus 1 (subgenus Tegacovirus, genus Alphacoronavirus, family Coronaviridae), which encompasses transmissible gastroenteritis virus (TGEV), feline coronavirus (FCoV) and canine coronavirus (CCoV), is an important pathogen that can cause severe gastroenteritis and is distributed worldwide. CCoV has two different genotypes: CCoV type I, which has a high identity with FCoV-I, and CCoV type II, which is divided into two subtypes, CCoV IIa (pantropic) and CCoV IIb, which is related to FCoV-II and ...
Tópico(s): SARS-CoV-2 and COVID-19 Research
2020 - Elsevier BV | Heliyon
Produção Nacional
Revisado por pares
Luis A. Murillo, Fernando Tenjo, Olga P. Clavijo, Mauricio Orozco, S.D.P.A.F. Sampaio, Jorge Kalil, Manuel E. Patarroyo,
Summary In recent studies with 63 and 122 volunteers vaccinated with the SPf 66 synthetic malaria vaccine, specific antibody patterns were classified as high or low responders. Using the Polymerase Chain Reaction (PCR), a specific and selective preference was shown for the Vβ arrangement of the T‐cell receptor in the high responder group involving the Vβ‐8 gene. The low responder group showed the rearrangement of a different set of genes, and a particular association with Vβ‐10.
Tópico(s): Computational Drug Discovery Methods
1992 - Wiley | Parasite Immunology
M. Campos‐Vallette, Miguel Saavedra, Guillermo Dı́az, R. E. Clavijo, Yadienka Martinez‐Rubi, Fernando Mendizábal, J. Costamagna, J. Canales, José Vicente Garcı́a-Ramos, Santiago Sánchez‐Cortés,
The FT-Raman spectra and surface-enhanced Raman scattering (SERS) on silver colloid of the azabipiridyl ligand and its Co(II), Ni(II) and Cu(II) complexes are reported. A resonance Raman (RR) study of the solids and a surface-enhanced infrared absorption (SEIRA) study were also accomplished. The spectral analysis indicates that there is a remarkable enhancement of the Raman spectra induced by the presence of an Ag surface. The complex–surface interaction is verified by the appearance of a ν(Ag–N) band ...
Tópico(s): Spectroscopy and Quantum Chemical Studies
2001 - Elsevier BV | Vibrational Spectroscopy
Lucile Plumet, Madjid Morsli, Nour Ahmad-Mansour, Fernando Clavijo-Coppens, Laurence Berry, Albert Sotto, Jean‐Philippe Lavigne, Denis Costechareyre, Virginie Molle,
Staphylococcus sp. is the most common bacterial genus in infections related to diabetic foot ulcers (DFUs). The emergence of multidrug-resistant bacteria places a serious burden on public health systems. Phage therapy is an alternative treatment to antibiotics, overcoming the issue of antibiotic resistance. In this study, six phages (SAVM01 to SAVM06) were isolated from effluents and were used against a panel of staphylococcal clinical samples isolated from DFUs. A genomic analysis revealed that the ...
Tópico(s): Rabies epidemiology and control
2023 - Multidisciplinary Digital Publishing Institute | Viruses
Evelyn Aguiar-Salazar, A. S. Alcivar Carmigniani, Bryan Aldaz, David Clavijo-Calderón, Paola P. Echeverría Ortíz, Mario Madrid-Pérez, Fernando Villalba-Meneses, Diego Almeida-Galárraga,
Among the various systemic disorders that hands can suffer, rheumatoid arthritis is one of the most common. This disease affects the synovial tissue of the joints, making extension and flexion movements difficult. Currently, there are drugs on the market to treat it, but they produce dangerous side effects affecting the quality of life of the patient. In this context, physical rehabilitation plays an important role as a complement to the work of conventional medications. The present work describes ...
Tópico(s): Muscle activation and electromyography studies
2020 - Springer Science+Business Media | Communications in computer and information science
Leonardo Arregocés, Julián Alfredo Fernández-Niño, Maylen Liseth Rojas-Botero, Andrés Felipe Palacios-Clavijo, Maryory Galvis Pedraza, Luz Rincón-Medrano, Mariana Pinto-Álvarez, Fernando Ruíz Gómez, Belém Trejo‐Valdivia,
BackgroundAlthough clinical trials showed that vaccines have high efficacy and safety, differences in study designs and populations do not allow for comparison between vaccines and age groups. The objective of this study was to evaluate the effectiveness of vaccines against COVID-19 in real-world conditions in adults aged 60 years and older in Colombia.MethodsIn this retrospective, population-based, matched cohort study, we evaluated the effectiveness of vaccines against COVID-19-related hospitalisation ...
Tópico(s): COVID-19 Clinical Research Studies
2022 - Elsevier BV | The Lancet Healthy Longevity
M. Campos‐Vallette, R. E. Clavijo, J. Costamagna, J. Canales, Guillermo Dı́az, Fernando Mendizábal, J. Ramirez, Miguel Saavedra,
Abstract The infrared spectra of the azabipiridyl macrocycle complexes of Ni(II), Cu(II) and Zn(II) were registered between 4000 and 200 cm −1 . The spectral assignment allowed to identify the complex formation and structural differences in the coordination site of the complexes. The Ni complex is coplanar to the coordinating N atoms; the copper ion is slightly out of the coordination site plane and the Zn cation is decidedly out of that plane. The stability order of the complex formation Ni>Cu>Zn, ...
Tópico(s): Spectroscopy and Quantum Chemical Studies
2000 - Elsevier BV | Vibrational Spectroscopy
Kyle Grayson, L. Ian MacDonald,
... Charest. Other participants included Jean Anderson, Laurent Beaudoin, Fernando Clavijo, Thomas d'Aquino, William Dymond, Francis Fox, Jonathan ...
Tópico(s): Canadian Identity and History
2001 - Athabasca University Press | Labour / Le Travail
Pablo Manuel Chauca Malásquez,
Es el titulo de un libro compilado por Fernando Clavija y cuya resena deja en claro que el objetivo central del material es analizar de modo exhaustivo, riguroso y de distintas perspectivas las reformas economicas puestas en practica en Mexico durante los ultimos veinte anos. El autor compila siete trabajos que a su vez forman parte de un proyecto de investigacion de mayor alcance auspiciado por la CEPAL que -con igual proposito- se ha realizado en otros ocho paises del Continente (Argentina, Bolivia, ...
Tópico(s): Latin American Legal and Economic Studies
2017 - National University, Costa Rica | Economía y Sociedad