Produção Nacional
... aflorarem em um planalto, ocorrem em um a escarpa. Esta perturbação é m oderna ficando entre o ... se nos seguintes argum entos: a) Alinhamento da escarpa, b) Bordos retilineos, c) Vales suspensos, d) Assimetria do relevo, e) Contraste entre a drenagem da escarpa e a do planalto, f) Ausência de capturas, ... Bambuí, b) Ausência parcial de correlação entre a escarpa do Espinhaço e a natureza da rocha, c) ... e Borborema e parte da Serra Geral, na escarpa de Torres. Os estudos de GUIMARÃES (75), provando ... onde os rios sofrem “divorcio aquarium ” como na escarpa Torres-Osorio na Serra Geral e no contacto ...
Tópico(s): Geography and Environmental Studies
1951 - | Boletim da Faculdade de Filosofia Ciências e Letras Universidade de São Paulo Geologia
... mais numerosas e conspícuas na baixada, entre a escarpa da serra do Mar e o mar (e ... e rio Paraiba. O exame da topografia da escarpa, tanto em excursão como em fotografias aéreas, não ... uma elevação por arqueamento para grande parte da escarpa. As evidências parecem conduzir à conclusão de ser a escarpa da serra do Mar não o produto tão ... no flanco voltado para o oceano, produzindo a escarpa atual. Nos pontos em que o eixo de ... o primitivo divisor de drenagem, verificamos agora uma escarpa íngreme, elevando-se junto à planície costal. Nestas ...
Tópico(s): Geological formations and processes
1953 - | Boletim da Faculdade de Filosofia Ciências e Letras Universidade de São Paulo Geologia
Produção Nacional
... ou menos abruptos. A erosão apenas remodelou a escarpa original, deixando-a retroceder 30 quilômetros no mínimo. Numerosos morros de testemunhos, na frente da escarpa, foram assim formados. O beirai abrupto da escarpa perto do oceano Atântico (Rio Grande do Sul) ... Patos e a drenagem fluvial muito juvenil desta escarpa. 14. Concluimos que o magma subiu em estado ... vale do Uruguai e na margem oriental da escarpa I em São Paulo. Existem assim zonas produtoras ...
Tópico(s): Geography and Environmental Studies
1949 - | Boletim da Faculdade de Filosofia Ciências e Letras Universidade de São Paulo Geologia
Walter R. Vandaveer, Stephanie A. Pasas, R. Scott Martin, Susan M. Lunte,
... 10 Wang, J., Ibanez, A., Chatrathi, M. P., Escarpa, A., Anal. Chem. 2001, 73, 5323–5327. 10. ... 12 Wang, J., Chatrathi, M. P., Ibanez, A., Escarpa, A., Electroanalysis 2002, 14, 400–404. 10.1002/ ... 26 Wang, J., Pumera, M., Chatrathi, M. P., Escarpa, A., Konrad, R., Griebel, A., Dorner, W., Lowe, ... CASPubMedWeb of Science®Google Scholar 63 Wang, J., Escarpa, A., Pumera, M., Feldman, J., J. Chromatogr. A ... 64 Wang, J., Pumera, M., Chatrathi, M. P., Escarpa, A., Musameh, M., Collins, G., Mulchandani, A., Lin, ...
Tópico(s): Biosensors and Analytical Detection
2002 - Wiley | Electrophoresis
André Augusto Rodrigues Salgado, Leilane Cristina Gonçalves Sobrinho, Luís Felipe Soares Cherem, César Augusto Chicarino Varajão, Didier Bourlès, Régis Braucher, Breno Ribeiro Marent,
... do rio Doce (porção leste e inferior da escarpa) com a bacia hidrográfica do rio Paraná (porção oeste e superior da escarpa) via mensuração das taxas quaternárias de desnudação através ... bacia hidrográfica do rio Doce e altas na escarpa. Permitem ainda compreender que o relevo regional evoluí ... regressão: o primeiro se caracteriza pelo recuo da escarpa e o segundo, localizado mais a oeste, pelas ...
Tópico(s): Geography and Environmental Studies
2012 - União da Geomorfologia Brasileira | Revista Brasileira de Geomorfologia
Produção Nacional
Luís Felipe Soares Cherem, César Augusto Chicarino Varajão, Antônio Pereira Magalhães, Angélica Fortes Drummond Chicarino Varajão, André Augusto Rodrigues Salgado, Letícia Augusta Faria Oliveira, William Zanete Bertolini,
... diferentes: 1) em Vilas-Boas a crista da escarpa se encontra na posição original e as alterações ... de captura; 2) em Carandaí a crista da escarpa já se encontra recuada a cerca de 1, ... e 3) em São Vicente a crista da escarpa já se encontra recuada a cerca de 3, ... à drenagem capturante, contribuindo assim, para o recuo escarpa e, a consequente disputa de áreas entre as ...
Tópico(s): Soil erosion and sediment transport
2014 - União da Geomorfologia Brasileira | Revista Brasileira de Geomorfologia
... espigões Couto-Prateleiras e Marombas-Dois Irmãos, a escarpa do vale do Paraíba e o vale dos ... resultado de falhamentos, como o vale dos Lírios, escarpa Couto-Prateleiras e o próprio planalto como um ... dentro do vale do Paraíba, relacionado com a escarpa da linha de falha e o vale do ...
Tópico(s): Geological formations and processes
1967 - | Boletim da Faculdade de Filosofia Ciências e Letras Universidade de São Paulo Geologia
Produção Nacional
Revisado por pares
Maria Jesus Nogueira Rodal, Ladivânia Medeiros do Nascimento,
... topo, e 117 na floresta aberta, localizada na escarpa meridional, com 12,5 % de similaridade (Jaccard). A ... diferenciadas, úmida no topo e mais seca na escarpa meridional, justifica as diferenças florísticas. Na floresta densa ...
Tópico(s): Soil Management and Crop Yield
2002 - Sociedade Botânica do Brasil | Acta Botanica Brasilica
Produção Nacional
Déborah de Oliveira, José Pereira de Queiroz Neto,
... da Serra do Mar, no reverso imediato da escarpa da Serra do Mar, a aproximadamente 45º 56' ... das rochas, no cotovelo de captura, próximo à escarpa; um vale abandonado pantanoso próximo ao cotovelo de ...
Tópico(s): Geography and Environmental Studies
2007 - UNIVERSIDADE DE SÃO PAULO | GEOUSP Espaço e Tempo (Online)
Kerry Gallagher, Chris Hawkesworth, Fabrizia Mantovani,
... Ma, enquanto que a cobertura de basaltos na escarpa, não foi submetida a temperaturas >50°C desde ... são consistentes com um modelo de retrocesso da escarpa. Modelos da história do despojamento e sua resposta ...
Tópico(s): Geology and Paleoclimatology Research
1995 - Elsevier BV | Journal of South American Earth Sciences
Juan F. Hernández-Rodríguez, Daniel Rojas, Alberto Escarpa,
... orcid.org/0000-0002-4404-4668, and Alberto Escarpa*Alberto EscarpaDepartment of Analytical Chemistry, Physical Chemistry and ...
Tópico(s): Gas Sensing Nanomaterials and Sensors
2020 - American Chemical Society | Analytical Chemistry
... 4, Madrid 35, Spain. Reprint requests to Dr. Escarpa. Accepted for publication August 13, 1982.
Tópico(s): Cardiovascular Syncope and Autonomic Disorders
1983 - Lippincott Williams & Wilkins | Anesthesia & Analgesia
Produção Nacional
Revisado por pares
Alex Bortolon de Matos, Pedro Antônio Roehe Reginato, Gustavo Barbosa Athayde,
... a compartimentação do Sistema Aquífero Guarani (SAG), na Escarpa da Serra Geral no nordeste do RS. Para ...
Tópico(s): Groundwater and Isotope Geochemistry
2018 - Associação Brasileira de Águas Subterrâneas | Águas Subterrâneas
Kaisong Yuan, Marta Pacheco, Beatriz Jurado‐Sánchez, Alberto Escarpa,
... The cover presented by Beatriz Jurado-Sánchez, Alberto Escarpa, and co-workers shows a skyline of the ...
Tópico(s): Modular Robots and Swarm Intelligence
2021 - Wiley | Advanced Intelligent Systems
Produção Nacional
Revisado por pares
Oswaldo Paulo Forattini, Almério de Castro Gomes, Eunice Aparecida Bianchi Galati, Ernesto Xavier Rabello, Lygia Busch Iversson,
... baixa densidade daqueles mosquitos na zona florestal da escarpa serrana, poderá explicar o possível papel de barreira ...
Tópico(s): Vector-Borne Animal Diseases
1978 - UNIVERSIDADE DE SÃO PAULO | Revista de Saúde Pública
A Criado, J Maseda, Eileen Navarro, A. Slocker Escarpa, F Avelló,
The haemodynamic effects of anaesthetic induction with i.v. etomidate have been assessed in 36 patients. The variables studied were recorded under basal conditions and 3 and 10 min after induction, before surgical stimulus. There was a reduction in cardiac output, stroke volume and arterial pressure, and a compensating increase in heart rate. Pulmonary arterial pressure and vascular resistance, central venous pressure and pulmonary capillary wedge pressure were virtually unchanged. Although etomidate ...
Tópico(s): Adrenal Hormones and Disorders
1980 - Elsevier BV | British Journal of Anaesthesia
Autores têm-se referido à definição geomorfológica de escarpa, ou vertente escarpada, sem levar em conta as ...
Tópico(s): Geological Modeling and Analysis
1990 - | Revista do Instituto Geológico
Miriam Hervás, Miguel Ángel López, Alberto Escarpa,
In this work, electrochemical immunoassay involving magnetic beads to determine zearalenone in selected food samples has been developed. The immunoassay scheme has been based on a direct competitive immunoassay method in which antibody-coated magnetic beads were employed as the immobilisation support and horseradish peroxidase (HRP) was used as enzymatic label. Amperometric detection has been achieved through the addition of hydrogen peroxide substrate and hydroquinone as mediator. Analytical performance ...
Tópico(s): Advanced biosensing and bioanalysis techniques
2009 - Elsevier BV | Analytica Chimica Acta
Joseph Wang, Baomin Tian, Madhu Prakash Chatrathi, Alberto Escarpa, Martin Pumera,
We demonstrate here that the electrode kinetics of an electrochemical detector contributes greatly to the resolution of the analyte bands in microchip electrophoresis systems with amperometric detection. The separation performance in terms of resolution and theoretical plate number can be improved and tailored by selecting or modifying the working electrode and/or by controlling the detection potential. Such improvements in the separation performance reflect the influence of the heterogeneous electron- ...
Tópico(s): Electrochemical Analysis and Applications
2009 - Wiley | Electrophoresis
Agustín G. Crevillén, Martin Pumera, Marı́a Cristina González, Alberto Escarpa,
Carbon nanotubes (CNTs) possess preferential 'electrocatalytic' properties that affect the oxidation of enediol groups, establishing a relationship between electrocatalysis and chemical structure. Since this chemical structure occurs in analytes involved in high impact areas such as the pharmaceutical, cosmetic, and food safety industries, this preferential electrochemical behaviour was demonstrated using both standard and selected real-world samples. The oxygen-containing species present on the surface ...
Tópico(s): Carbon Nanotubes in Composites
2009 - Royal Society of Chemistry | The Analyst
Mónica Ávila, Mohammed Zougagh, Alberto Escarpa, Ángel Ríos,
A new, simple and versatile method is presented for the determination of different concentration levels of alkenylbenzenes (eugenol, isoeugenol, eugenol methyl ether, myristicin, anethole and estragole) and the related flavour compounds (coumarin and pulegone) in food samples. The method involves the use of a stationary phase (capillary column) for the enrichment with appropriate elution. After the sample had completely passed through the capillary column the eluent was changed and the separation/detection ...
Tópico(s): Analytical chemistry methods development
2009 - Elsevier BV | Journal of Chromatography A
Mirian Hervás, Miguel Ángel López, Alberto Escarpa,
An electrochemical immunosensor involving magnetic beads and disposable carbon screen-printed electrodes (SPEs) for zearalenone (Zea) sensing has been developed and evaluated using a certified reference material (CRM) and selected baby food samples. After the immunochemical reaction, the modified paramagnetic beads were confined by a magnet on surface of SPE platforms where electrochemical detection is simply achieved through the suitable substrate and mediator for the HRP enzyme. A remarkable detection ...
Tópico(s): Enterobacteriaceae and Cronobacter Research
2009 - Elsevier BV | Biosensors and Bioelectronics
Martin Pumera, Alberto Escarpa,
The different approaches for constructing nanomaterial-based detectors for conventional CE and microchip electrophoresis are described in this review. They include three main types of nanomaterials, including carbon nanotubes, nanoparticles, and nanorods in various designs. The fundamental reasons for the enhanced detection performance of nanomaterial-based detectors, such as higher sensitivity, improved limits of detection, and higher peak capacity, are discussed in detail. Various applications ...
Tópico(s): Biosensors and Analytical Detection
2009 - Wiley | Electrophoresis
Mónica Ávila, Mohammed Zougagh, Alberto Escarpa, Ángel Ríos,
A new strategy based on the fast separation of the fingerprint markers of Vanilla planifolia extracts and vanilla-related samples on microfluidic-electrochemistry chip is proposed. This methodology allowed the detection of all required markers for confirmation of common frauds in this field. The elution order was strategically connected with sequential sample screening and analyte confirmation steps, where first ethyl vanillin was detected to distinguish natural from adultered samples; second, vanillin ...
Tópico(s): Biochemical and biochemical processes
2009 - Wiley | Electrophoresis
Miriam Hervás, Miguel Ángel López, Alberto Escarpa,
A novel analytical strategy that couples enzyme-linked immunosorbent assay (ELISA) and electrochemical microfluidic chips to determine the mycotoxin zearalenone (ZEA) in baby foods is presented. The analytical cycles for an ultra-fast analysis of the sample and its sequential fast and simplified calibration were performed in about 200 s plus to ELISA protocol. This route avoided the typical four-parameter logistic curve fit which is a highly time-consuming and laborious procedure. An extremely low ...
Tópico(s): Antibiotics Pharmacokinetics and Efficacy
2009 - Royal Society of Chemistry | The Analyst
Teresa Hernández López, Jesús Roldán Fernández, Anunciación Jiménez Frutos, Carlos Mora Rodríguez, Dolores Escarpa Sánchez-Garnica, María Teresa Álvarez,
Our research's aim consists on studying the relationship between early beginning of tobacco, alcohol and drugs taking, and problematic consumption, in a sample of 6280 young people from Madrid in a range of 15-24 years old. The early experimentation with tobacco, alcohol (before 14 years old) or cannabis (before 15 years old) is related to a higher prevalence of daily tobacco and cannabis consumption, to a daily alcohol-abusive patterns and to either regular multiple-drugs consumption or concurrent ...
Tópico(s): Alcohol Consumption and Health Effects
2009 - Colegio Oficial de Psicólogos de Madrid | Psychosocial Intervention
Produção Nacional
Luiz J. Tomazelli, Jorge Alberto Villwock,
... praia dissipativa mostrando uma superfície plana e uma escarpa quase permanente no cordão de dunas frontais que ...
Tópico(s): Geological formations and processes
1992 - | Pesquisas em Geociências
Joseph Wang, Alberto Escarpa, Martin Pumera, Jason Feldman,
A microfluidic analytical system for the separation and detection of organic peroxides, based on a microchip capillary electrophoresis device with an integrated amperometric detector, was developed. The new microsystem relies on the reductive detection of both organic acid peroxides and hydroperoxides at −700 mV (vs. Ag wire/AgCl). Factors influencing the separation and detection processes were examined and optimized. The integrated microsystem offers rapid measurements (within 130 s) of these organic- ...
Tópico(s): Electrochemical Analysis and Applications
2002 - Elsevier BV | Journal of Chromatography A
Joseph Wang, Martin Pumera, Madhu Prakash Chatrathi, Alberto Escarpa, R. Konrad, Anja Griebel, Wolfgang Dörner, Holger Löwe,
A fully disposable microanalytical device based on combination of poly(methylmethacrylate) (PMMA) capillary electrophoresis microchips and thick-film electrochemical detector strips is described. Variables influencing the separation efficiency and amperometric response, including separation voltage or detection potential are assessed and optimized. The versatility, simplicity and low-cost advantages of the new design are coupled to an attractive analytical performance, with good precision (relative ...
Tópico(s): Biosensors and Analytical Detection
2002 - Wiley | Electrophoresis
Joseph Wang, Madhu Prakash Chatrathi, Alfredo Ibáñez, Alberto Escarpa,
Microchip devices integrating eletrophoretic separations, post-column enzymatic derivatization reactions, and amperometric detection, have been developed. The performance of the new integrated microfabricated chip system is demonstrated for on-chip assay of amino acids based on their electrophoretic separation, post-column reaction with amino-acid oxidase and amperometric detection of the hydrogen peroxide product. Factors influencing the response are examined and optimized, and the analytical performance ...
Tópico(s): Biosensors and Analytical Detection
2002 - Wiley | Electroanalysis