1000 resultados para Etnomusicologia Corumbá (MS)
Resumo:
El 2003 es va publicar el catleg de plantes vasculars del Parc del Cad-Moixer i les serres venes; poc desprs un de nosaltres en va presentar una sntesi en el nmero 3 d"aquesta revista. Alludem aleshores a l"important bagatge tant d"exploracions cientfiques com de dades sobre la flora del territori existents en el moment de redactar el catleg; de fet, gaireb tots els botnics catalans, i molts de francesos i d"espanyols, hi han passat en algun moment i han contribut al coneixement de la seva flora.
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High-resolution mass spectrometry (HRMS) has been associated with qualitative and research analysis and QQQ-MS with quantitative and routine analysis. This view is now challenged and for this reason, we have evaluated the quantitative LC-MS performance of a new high-resolution mass spectrometer (HRMS), a Q-orbitrap-MS, and compared the results obtained with a recent triple-quadrupole MS (QQQ-MS). High-resolution full-scan (HR-FS) and MS/MS acquisitions have been tested with real plasma extracts or pure standards. Limits of detection, dynamic range, mass accuracy and false positive or false negative detections have been determined or investigated with protease inhibitors, tyrosine kinase inhibitors, steroids and metanephrines. Our quantitative results show that today's available HRMS are reliable and sensitive quantitative instruments and comparable to QQQ-MS quantitative performance. Taking into account their versatility, user-friendliness and robustness, we believe that HRMS should be seen more and more as key instruments in quantitative LC-MS analyses. In this scenario, most targeted LC-HRMS analyses should be performed by HR-FS recording virtually "all" ions. In addition to absolute quantifications, HR-FS will allow the relative quantifications of hundreds of metabolites in plasma revealing individual's metabolome and exposome. This phenotyping of known metabolites should promote HRMS in clinical environment. A few other LC-HRMS analyses should be performed in single-ion-monitoring or MS/MS mode when increased sensitivity and/or detection selectivity will be necessary.
Resumo:
Aquest treball pretn analitzar loferta cultural al municipi de Palafrugell i la seva projecci turstica, per tal de formular propostes de millora i contribuir aix a augmentar la presncia turstica en aquest tipus de recursos
Resumo:
Aquesta s la primera guia d'identificaci de la collecci i es dedica als Efemerpters (INSECTA: EPHEMEROPTERA). Els gneres i grups despcies inclosos a la guia sn aquells que de forma ms freqent hem trobat ens els estudis que realitzem en el marc del programa Estudis de la Qualitat Ecolgica dels Rius de la Provncia de Barcelona. Aquest programa fou una iniciativa promoguda per la Diputaci de Barcelona mitjanant la seva Oficina Tcnica d'Acci Territorial de l'rea de Territori i Sostenibilitat. La major part de les fotografies corresponen exemplars recollectats el 2012 a les parts altes del riu Llobregat i els seus afluents pels membres del nostre grup de recerca, tot i que en alguns casos shan examinat.
Resumo:
Aquesta s la segona guia d'identificaci de la collecci i es dedica als Plecpters (INSECTA: PLECOPTERA). Els gneres i grups despcies inclosos a la guia sn aquells que de forma ms freqent hem trobat ens els estudis que realitzem en el marc del programa Estudis de la Qualitat Ecolgica dels Rius de la Provncia de Barcelona. Aquest programa fou una iniciativa promoguda per la Diputaci de Barcelona mitjanant la seva Oficina Tcnica d'Acci Territorial de l'rea de Territori i Sostenibilitat. La major part de les fotografies corresponen exemplars recollectats el 2013 a les parts altes del riu Llobregat i els seus afluents pels membres del nostre grup de recerca, tot i que en alguns casos shan examinat les mostres histriques.
Resumo:
Aquesta s la primera guia d'identificaci de la collecci i es dedica als Efemerpters (INSECTA: EPHEMEROPTERA). Els gneres i grups despcies inclosos a la guia sn aquells que de forma ms freqent hem trobat ens els estudis que realitzem en el marc del programa Estudis de la Qualitat Ecolgica dels Rius de la Provncia de Barcelona. Aquest programa fou una iniciativa promoguda per la Diputaci de Barcelona mitjanant la seva Oficina Tcnica d'Acci Territorial de l'rea de Territori i Sostenibilitat. La major part de les fotografies corresponen exemplars recollectats el 2012 a les parts altes del riu Llobregat i els seus afluents pels membres del nostre grup de recerca, tot i que en alguns casos shan examinat.
Resumo:
Aquesta s la segona guia d'identificaci de la collecci i es dedica als Plecpters (INSECTA: PLECOPTERA). Els gneres i grups despcies inclosos a la guia sn aquells que de forma ms freqent hem trobat ens els estudis que realitzem en el marc del programa Estudis de la Qualitat Ecolgica dels Rius de la Provncia de Barcelona. Aquest programa fou una iniciativa promoguda per la Diputaci de Barcelona mitjanant la seva Oficina Tcnica d'Acci Territorial de l'rea de Territori i Sostenibilitat. La major part de les fotografies corresponen exemplars recollectats el 2013 a les parts altes del riu Llobregat i els seus afluents pels membres del nostre grup de recerca, tot i que en alguns casos shan examinat les mostres histriques.
Resumo:
An automatic dispenser based on a flow-injection system used to introduce sample and analytical solution into an inductively coupled plasma mass spectrometer through a spray chamber is proposed. Analytical curves were constructed after the injection of 20 to 750 L aliquots of a multielement standard solution (20.0 g L-1 in Li, Be, Al, V, Cr, Mn, Ni, Co, Cu, Zn, As, Se, Sr, Ag, Cd, Ba, Tl, Pb) and the acquisition of the integrated transient signals. The linear concentration range could be extended to ca. five decades. The performance of the system was checked by analyzing a NIST 1643d reference material. Accuracy could be improved by the proper selection of the injected volume. Besides good precision (r.s.d. < 2%), the results obtained with the proposed procedure were closer to the certified values of the reference material than those obtained by direct aspiration or by injecting 125 L of several analytical solutions and samples.
Resumo:
The multi-element determination of Al, Cr, Mn, Ni, Cu, Zn, Cd, Ba, Pb, SO4= and Cl- in riverine water samples was accomplished by inductively coupled plasma mass spectrometry (ICP-MS). The sample passed through a column containing the anionic resin AG1-X8 and the metals were determined directly. The retained anionic species were eluted and SO4= and Cl- were determined at m/z 48 and 35 correspondent to the ions SO+ and Cl+ formed at the plasma. Accuracy for metals was assessed by analysing the certified reference TM-26 (National Water Research Institute of Canada). Results for SO4= and Cl- were in agreement with those obtained by turbidimetry and spectrophotometry. LOD's of 0.1 g l-1 for Cd, Ba and Pb; 0.2 g l-1 for Al, Mn and Cu; 0.5 g l-1 for Cr; 0.9 for Zn; 2.0 g l-1for Ni , 60 g l-1 for S and 200 g l-1 Cl were attained.
Resumo:
Results on the optimization of analytical methods for the determination of phosphorus in phosphino-polycarboxylate (PPCA), used frequently as scale inhibitor during oil production, by ICP-AES and ICP-MS are presented. Due to the complex matrix of production waters (brines) and their high concentration in inorganic phosphorus, the separation of organic phosphorus prior to its determination is necessary. In this work, minicolumns of silica immobilized C18 were used. Optimization of the separation step resulted in the following working conditions: (1) prewashing of the column with methanol (80% v/v); (2) use of a flow rate of 5 mL/min and 10 mL/min, respectively, for the preconditioning step and for percolation of the water sample; (3) final elution of organic phosphorus with 7 mL of buffer of H3BO3/NaOH (0.05 M, pH 9) with a flow rate of 1 mL/min. Sample detection limits (3s) for different combinations of nebulizers and spectrometric methods, based on 10 mL water aliquots, are: ICP-AES -Cross flow (47 mg/L) and Ultrasonic (18 mug/L); ICP-MS -Cross flow (1.2 mug/L), Cyclonic (0.7 mug/L) and Ultrasonic (0.5 mug/L). Typical recoveries of organic phosphorus are between 90 and 95% and the repeatability of the whole procedure is better than 10%. The developed methodology was applied successfully to samples from the oil-well NA 46, platform PNA 2, Campos basin, Brazil. Assessment of the PPCA inhibitor was possible at lower concentrations than achieved by current analytical methods, resulting in benefits such as reduced cost of chemicals, postponed oil production and lower environmental impacts.
Resumo:
[spa] En el presente artculo se presentan los tres grandes mbitos en los que se desarrolla la investigacin arqueomtrica sobre cermicas: la identificacin de los materiales, la proveniencia de los artefactos y la tecnologa en la que se inscriben. El artculo hace una incidencia especial en aquello que se entiende por tecnologa, indicando que la tecnologa de produccin es nicamente una parte de la misma, y que el concepto bsico es el de diseo, que debe adecuarse a una multiplicidad de caractersticas de desempeo, explicadas por la cadena conductual en la cual transcurre la vida de los artefactos. Dado que las culturas se expresan por medio de artefactos, la vertiente material de stos refleja, aunque slo sea en parte, los compromisos que dichos artefactos tienen en las culturas en estudio. La arqueometra, con un cuerpo terico y metodolgico adaptado a la investigacin de esta vertiente natural de los artefactos, aparece as como una forma complementaria de hacer arqueologa y no como un campo de estudio diferenciado.
Resumo:
El presente trabajo pretende ser una herramienta que aporte informacin relativa a los usos de diez de los primeros verbos ms frecuentes del espaol comparados con los usos que se encuentran en amazigh y que pueda servir como complemento en la prevencin de posibles errores durante el proceso de aprendizaje del espaol por parte de estudiantes hablantes de amazigh
Resumo:
This work expect to prove relations between the bookbinding of two manuscripts conserved in the Library of the University of Barcelona and the bookbinding to realise in the workshop of bookbinding of the Library of Alfonso el Magnanimous in this court Neapolitan, across over the study of this elements and architecture, and give the denomination of bookbinding mudejar neapolitan, because they are to make in this workshop or in this defect in Italy in the middle of the XV century.
Resumo:
Ressenya de: Walter D. Mignolo, The Darker Side of Western Modernity. Global Futures, Decolonial Options. Duke University Press 2011.
Resumo:
Les causes d'aquest desajust no noms estan a la Universitat i l'empresa, tamb l'administraci hi t la seva part de responsabilitat. La Universitat i l'empresa s'han de conixer, saber que fa cadascuna i collaborar, per l'administraci ha de propiciar i fomentar-ne la relaci i aix noms es pot fer coneixent quins sn els dficits estructurals que ho dificulten i crear un marc i condicions per eliminar-los o, si ms no, reduir-los. Una altra variable explicativa de la mala situaci de la competitivitat s la nostra relativa poca producci de doctors respecte a d'altres pasos del nostre entorn que sn ms competitius
