Nueua relacion, flamante, y curioso romance, jamas visto, ni oido, en que se refieren las haza��as, y atrocidades del dios Baco : los puestos y dignidades que reparte a los inumerables [sic] cofrades de tan grande hermandad ...

Segun Aguilar Pi��al, Romancero popular del s. XVIII

Nueuo, y verdadero romance en que se refiere la desordenada vida ... de un logrero llamado D. Joseph Antonio Traspe��a : el qual no queria oir missa, ni entrar en la Iglesia, ni dar limosna ... : declarase como haviendo llegado a su puerta el apostol S. Pedro y el bendito S. Antonio de Padua en trege [i.e. trage] de pobres no los quiso socorrer ... : primera parte

El autor aparece en la segunda parte

Coloqui nou y entretengut, pera riure y passar lo temps, despues de la pancha plena, y no de palla de faves, ni safanories [Texto impreso] : ahon se refereix un cas molt graci��s, que pas�� en un Poble ...

Hay un ejemplar encuadernado con: Discret rahonament, quiexa formal que fan contra el Micalet de la Seu, la Torre de Espioca, y la Torre de Paterna, sobre la gran visita que ��ste tingu�� en lo dia cinc de Deembre [sic] ... per veure y admirar tan magn��fica obra y deliciosa vista ... Carlos Quart (que Deu guart) y el se��or Don Fernando de Borb�� ... : (XVIII/1105).

Role of neuronal nitric oxide in 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-induced dopaminergic neurotoxicity.

1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) causes nigrostriatal dopaminergic pathway damage similar to that observed in Parkinson disease (PD). To study the role of NO radical in MPTP-induced neurotoxicity, we injected MPTP into mice in which nitric oxide synthase (NOS) was inhibited by 7-nitroindazole (7-NI) in a time- and dose-dependent fashion. 7-NI dramatically protected MPTP-injected mice against indices of severe injury to the nigrostriatal dopaminergic pathway, including reduction in striatal dopamine contents, decreases in numbers of nigral tyrosine hydroxylase-positive neurons, and numerous silver-stained degenerating nigral neurons. The resistance of 7-NI-injected mice to MPTP is not due to alterations in striatal pharmacokinetics or content of 1-methyl-4-phenylpyridinium ion (MPP+), the active metabolite of MPTP. To study specifically the role of neuronal NOS (nNOS), MPTP was administered to mutant mice lacking the nNOS gene. Mutant mice are significantly more resistant to MPTP-induced neurotoxicity compared with wild-type littermates. These results indicate that neuronally derived NO mediates, in part, MPTP-induced neurotoxicity. The similarity between the MPTP model and PD raises the possibility that NO may play a significant role in the etiology of PD.

Efeito da temperatura de revenimento sobre o grau de sensitiza����o e resist��ncia �� corros��o por pite de a��os inoxid��veis supermartens��ticos contendo 13% Cr, 5% Ni, com e sem adi����es de Nb e Mo.

O desenvolvimento dos a��os inoxid��veis Super-Martens��ticos (SM) nasce da necessidade de implementar novas tecnologias, mais econ��micas e amig��veis ao meio ambiente. Os a��os inoxid��veis SM s��o uma deriva����o dos a��os inoxid��veis martens��ticos convencionais, diferenciando-se basicamente no menor teor de carbono, na adi����o de Ni e Mo. Foram desenvolvidos como uma alternativa para a��os inoxid��veis duplex no uso de dutos para a extra����o de petr��leo offshore em meados dos anos 90. Para que esses a��os apresentem as propriedades mec��nicas de resist��ncia �� tra����o e tenacidade �� necess��rio que sejam realizados tratamentos de austenitiza����o, seguido de t��mpera, e de revenimento, onde, particularmente para este ��ltimo, h�� v��rias op����es de tempos e temperaturas. Como os tratamentos t��rmicos geram as propriedades mec��nicas atrav��s de transforma����es de fase (precipita����o) podem ocorrer altera����es da resist��ncia �� corros��o. S��o conhecidos os efeitos ben��ficos da adi����o de Nb em a��os inoxid��veis tradicionais. Por isso, o objetivo desta pesquisa foi estudar a��os inoxid��veis SM contendo Nb. Foi pesquisada a influ��ncia da temperatura de revenimento sobre a resist��ncia �� corros��o de tr��s a��os inoxid��veis SM, os quais cont��m 13% Cr, 5% Ni, 1% a 2% Mo, com e sem adi����es de Nb. No presente trabalho, foram denominados de SM2MoNb, SM2Mo e SM1MoNb, que representam a��os com 2% Mo, 1% Mo e 0,11% Nb. Dado que os principais tipos de corros��o para a��os inoxid��veis s��o a corros��o por pite (por cloreto) e a corros��o intergranular (sensitiza����o), optou-se por determinar os Potenciais de Pite (Ep) e os Graus de Sensitiza����o (GS) em fun����o da temperatura de revenimento. Os a��os passaram por recozimento a 1050��C por 48 horas, para elimina����o de fase ferrita delta. Em seguida foram tratados a 1050 ��C por 30 minutos, com resfriamento ao ar, para uniformiza����o do tamanho de gr��o. A estrutura martens��tica obtida recebeu tratamentos de revenimento em temperaturas de: 550 ��C, 575 ��C, 600 ��C, 625 ��C, 650 ��C e 700 ��C, por 2 horas. O GS foi medido atrav��s da t��cnica de reativa����o eletroqu��mica potenciodin��mica na vers��o ciclo duplo (DL-EPR), utilizando-se eletr��lito de 1M H2SO4 + 0,01M KSCN. Para determinar o Ep foram realizados ensaios de polariza����o potenciodin��mica em 0,6M NaCl. Os resultados obtidos foram discutidos atrav��s das varia����es microestruturais encontradas. Foram empregadas t��cnicas de microscopia ��tica (MO), microscopia eletr��nica de varredura (MEV), simula����o termodin��mica de fases atrav��s do programa Thermo-Calc e determina����o de austenita revertida mediante difra����o de raios X (DRX) e ferritosc��pio. A quantifica����o da austenita por DRX identificou que a partir de 600 ��C h�� forma����o desta fase, apresentando m��ximo em 650 ��C, e novamente diminuindo para zero a 700 ��C. Por sua vez, o m��todo do ferritosc��pio detectou austenita nas condi����es em que a analise de DRX indicou valor nulo, sendo as mais cr��ticas a do material temperado (sem revenimento) e do a��o revenido a 700 ��C. Prop��e-se que tais diferen��as entre os dois m��todos se deve �� morfologia fina da austenia retida, a qual deve estar localizada entre as agulhas de martensita. Os resultados foram discutidos em termos da precipita����o de Cr23C6, Mo6C, NbC, fase Chi, austenita e ferrita, bem como das consequ��ncias do empobrecimento em Cr e Mo, gerados por tais microconstituintes. S��o propostos tr��s mecanismos para explicar a sensitiza����o: o primeiro �� devido a precipita����o de Cr23C6, o segundo a precipita����o de fase Chi (rica em Cr e Mo) e o terceiro �� devido a forma����o de ferrita durante o revenimento. O melhor desempenho quanto ao GS foi obtido para os revenimentos a 575 ��C e 600��C, por 2 horas. Os resultados de Ep indicaram que o a��o SM2MoNb, revenido a 575��C, tem o melhor desempenho quanto �� resist��ncia �� corros��o por cloreto. Isso associado ao baixo GS coloca este a��o, com este tratamento t��rmico, numa posi����o de destaque para aplica����es onde a resist��ncia �� corros��o �� um crit��rio de sele����o de material, uma vez que, segundo a literatura a temperatura de 575 ��C est�� no intervalo de temperaturas de revenimento onde s��o obtidas as melhores propriedades mec��nicas.

Mechanical, electrical, and magnetic properties of Ni nanocontacts

The dynamic deformation upon stretching of Ni nanowires as those formed with mechanically controllable break junctions or with a scanning tunneling microscope is studied both experimentally and theoretically. Molecular dynamics simulations of the breaking process are performed. In addition, and in order to compare with experiments, we also compute the transport properties in the last stages before failure using the first-principles implementation of Landauer's formalism included in our transport package ALACANT.

Electrocatalytic activity of Ni-doped nanoporous carbons in the electrooxidation of propargyl alcohol

Herein, we explore the immobilization of nickel on various carbon supports and their application as electrocatalysts for the oxidation of propargyl alcohol in alkaline medium. In comparison with massive and nanoparticulated nickel electrode systems, Ni-doped nanoporous carbons provided similar propargyl alcohol conversions for very low metallic contents. Nanoparticulated Ni on various carbon supports gave rise to the highest electrocatalytic activity in terms of product selectivity, with a clear dependence on Ni content. The results point to the importance of controlling the dispersion of the Ni phase within the carbon matrix for a full exploitation of the electroactive area of the metal. Additionally, a change in the mechanism of the propargyl alcohol electrooxidation was noted, which seems to be related to the physicochemical properties of the carbon support as well. Thus, the stereoselectivity of the electrooxidative reaction can be controlled by the active nickel content immobilized on the anode, with a preferential oxidation to (Z)-3-(2-propynoxy)-2-propenoic acid with high Ni-loading, and to propiolic acid with low loading of active Ni sites. Moreover, the formation of (E)-3-(2-propynoxy)-2-propenoic acid was discriminatory irrespective of the experimental conditions and Ni loadings on the carbon matrixes.

Low metal content Co and Ni alumina supported catalysts for the CO2 reforming of methane

Low metal content Co and Ni alumina supported catalysts (4.0, 2.5 and 1.0 wt% nominal metal content) have been prepared, characterized (by ICP-OES, TEM, TPR-H2 and TPO) and tested for the CO2 reforming of methane. The objective is to optimize the metal loading in order to have a more efficient system. The selected reaction temperature is 973 K, although some tests at higher reaction temperature have been also performed. The results show that the amount of deposited carbon is noticeably lower than that obtained with the Co and Ni reference catalysts (9 wt%), but the CH4 and CO2 conversions are also lower. Among the catalysts tested, the Co(1) catalyst (the value in brackets corresponds to the nominal wt% loading) is deactivated during the first minutes of reaction because CoAl2O4 is formed, while Ni(1) and Co(2.5) catalysts show a high specific activity for methane conversion, a high stability and a very low carbon deposition.

Ni-CeO2/C Catalysts with Enhanced OSC for the WGS Reaction

In this work, the WGS performance of a conventional Ni/CeO2 bulk catalyst is compared to that of a carbon-supported Ni-CeO2 catalyst. The carbon-supported sample resulted to be much more active than the bulk one. The higher activity of the Ni-CeO2/C catalyst is associated to its oxygen storage capacity, a parameter that strongly influences the WGS behavior. The stability of the carbon-supported catalyst under realistic operation conditions is also a subject of this paper. In summary, our study represents an approach towards a new generation of Ni-ceria based catalyst for the pure hydrogen production via WGS. The dispersion of ceria nanoparticles on an activated carbon support drives to improved catalytic skills with a considerable reduction of the amount of ceria in the catalyst formulation.

Mujeres empresarias en el uso de la web 2.0: discursos de un preludio

Este trabajo presenta los principales resultados de una investigaci��n cuya finalidad es conocer la adopci��n de las redes sociales on-line en las pymes dirigidas por mujeres. Se parte de la base de que el uso de redes, como elemento estrat��gico de comunicaci��n, se encuentra todav��a en una fase incipiente de desarrollo, lejos a��n de ser una pr��ctica consolidada. Nuestro inter��s en este trabajo es conocer la predisposici��n y motivaciones de las empresarias hacia el uso estas redes, as�� como las utilidades y dificultades a las que han de enfrentarse. Nos interesa visibilizar el cambio actitudinal y competencial que las empresarias est��n imprimiendo en sus empresas dentro del marco competitivo en el que se encuentran. En definitiva, nos interesa estudiar la percepci��n que tienen las empresarias sobre el uso de las redes sociales online en la medida en que est��n insertas, como una herramienta m��s de gesti��n empresarial. Nos situamos ante un nuevo ��mbito de conocimiento sobre el que apenas existen referencias bibliogr��ficas ni se ha realizado apenas investigaci��n; de ah�� que la investigaci��n tenga una finalidad fundamentalmente exploratoria y de car��cter cualitativo. Para la obtenci��n de la informaci��n se realizaron catorce entrevistas semi-estructuradas entre empresarias andaluzas de distintos sectores de actividad. Entre los principales resultados encontramos que algo menos de la mitad de ellas las utilizan, o est��n implantadas en sus empresas, como herramientas de comunicaci��n. El resto, y relacionado con el tama��o de sus negocios, las utilizan como una prolongaci��n del uso personal en el que se iniciaron.

Methane dry reforming over Ni supported on pine sawdust activated carbon: Effects of support surface properties and metal loading

The influence of metal loading and support surface functional groups (SFG) on methane dry reforming (MDR) over Ni catalysts supported on pine-sawdust derived activated carbon were studied. Using pine sawdust as the catalyst support precursor, the smallest variety and lowest concentration of SFG led to best Ni dispersion and highest catalytic activity, which increased with Ni loading up to 3 Ni atoms nm-2. At higher Ni loading, the formation of large metal aggregates was observed, consistent with a lower "apparen" surface area and a decrease in catalytic activity. The H2/CO ratio rose with increasing reaction temperature, indicating that increasingly important side reactions were taking place in addition to MDR.

Estudio de fiabilidad y viabilidad de la Web 2.0 y la Web sem��ntica para enriquecer lexicones en el dominio farmacol��gico

Los actuales sistemas de Reconocimiento de Entidades en el dominio farmacol��gico, necesarios como apoyo para el personal sanitario en el proceso de prescripci��n de un tratamiento farmacol��gico, sufren limitaciones relacionadas con la falta de cobertura de las bases de datos oficiales. Parece por tanto necesario analizar la fiabilidad de los recursos actuales existentes, tanto en la Web Sem��ntica como en la Web 2.0, y determinar si es o no viable utilizar dichos recursos como fuentes de informaci��n complementarias que permitan generar y/o enriquecer lexicones empleados por sistemas de Reconocimiento de Entidades. Por ello, en este trabajo se analizan las principales fuentes de informaci��n relativas al dominio farmacol��gico disponibles en Internet. Este an��lisis permite concluir que existe informaci��n fiable y que dicha informaci��n permitir��a enriquecer los lexicones existentes con sin��nimos y otras variaciones l��xicas o incluso con informaci��n hist��rica no recogida ni mantenida en las bases de datos oficiales.

H��dh�� kit��b al-I��l��m t��r��kh Bayt All��h al-���ar��m wa-al-ni���f al-th��n�� Taw��r��kh ��l ��Uthm��n / ta��l��f Shaykh al-Isl��m al-Shaykh Qu���b al-D��n al-Makk�� : manuscript, undated

Bound in half leather and boards.

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P��r Im��m Sh��h.

Chiral, Three-Dimensional Supramolecular Compounds: Homo- and Bimetallic Oxalate- and 1,2-Dithiooxalate-Bridged Networks. A Structural and Photophysical Study.

In analogy to the [M(II)(bpy)(3)](2+) cations, where M(II) is a divalent transition-metal and bpy is 2,2'-bipyridine, the tris-chelated [M(III)(bpy)(3)](3+) cations, where M(III) is Cr(III) or Co(III), induce the crystallization of chiral, anionic three-dimensional (3D) coordination polymers of oxalate-bridged (&mgr;-ox) metal complexes with stoichiometries [M(II)(2)(ox)(3)](n)()(2)(n)()(-) or [M(I)M(III)(ox)(3)](n)()(2)(n)()(-). The tripositive charge is partially compensated by inclusion of additional complex anions like ClO(4)(-), BF(4)(-), or PF(6)(-) which are encapsulated in cubic shaped cavities formed by the bipyridine ligands of the cations. Thus, an elaborate structure of cationic and anionic species within a polymeric anionic network is realized. The compounds isolated and structurally characterized include [Cr(III)(bpy)(3)][ClO(4)] [NaCr(III)(ox)(3)] (1), [Cr(III)(bpy)(3)][ClO(4)][Mn(II)(2)(ox)(3)] (2), [Cr(III)(bpy)(3)][BF(4)] [Mn(II)(2)(ox)(3)] (3), [Co(III)(bpy)(3)][PF(6)][NaCr(III)(ox)(3)] (4). Crystal data: 1, cubic, P2(1)3, a = 15.523(4) ��, Z = 4; 2, cubic, P4(1)32, a = 15.564(3) ��, Z = 4; 3, cubic, P4(1)32, a = 15.553(3) ��, Z = 4; 4, cubic, P2(1)3, a = 15.515(3) ��, Z = 4. Furthermore, it seemed likely that 1,2-dithiooxalate (dto) could act as an alternative to the oxalate bridging ligand, and as a result the compound [Ni(II)(phen)(3)][NaCo(III)(dto)(3)].C(3)H(6)O (5) has successfully been isolated and structurally characterized. Crystal data: 5, orthorhombic, P2(1)2(1)2(1), a = 16.238(4) ��, b = 16.225(4) ��, c = 18.371(5) ��, Z = 4. In addition, the photophysical properties of compound 1 have been investigated in detail. In single crystal absorption spectra of [Cr(III)(bpy)(3)][ClO(4)][NaCr(III)(ox)(3)] (1), the spin-flip transitions of both the [Cr(bpy)(3)](3+) and the [Cr(ox)(3)](3)(-) chromophores are observed and can be clearly distinguished. Irradiating into the spin-allowed (4)A(2) --> (4)T(2) absorption band of [Cr(ox)(3)](3)(-) results in intense luminescence from the (2)E state of [Cr(bpy)(3)](3+) as a result of rapid energy transfer processes.