999 resultados para HERNÁNDEZ, ARTURO, ca.1903-1970
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Estudi i avaluació de les principals propietats del sòl i la dinàmica erosiva relacionades amb l’ús del sòl i l’abandó agrícola en diferents ambients de la península del Cap de Creus. Per dur a terme aquest estudi s’han seleccionat 7 ambients diferentsrepresentatius d’una seqüència d’usos fins l’abandó en diferents etapes desuccessió vegetal. Els ambients són diferenciats entre sòls cultivats (vinya iolivera), sòls forestals (sureda i pineda), pastures (prats) i matollars (Cistusmonspeliensis i d’Erica arborea) respectivament cremat reiteradament i nocremat durant 25 anys. En cada ambient s’han instal.lat parcel.les d’erosióque permeten avaluar la producció de sediments i la mobilització de nutrients (carboni i nitrogen) durant els episodis de precipitació que generen escolament superficial
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Candida albicans RCH1 (regulator of Ca(2+) homoeostasis 1) encodes a protein of ten TM (transmembrane) domains, homologous with human SLC10A7 (solute carrier family 10 member 7), and Rch1p localizes in the plasma membrane. Deletion of RCH1 confers hypersensitivity to high concentrations of extracellular Ca(2+) and tolerance to azoles and Li(+), which phenocopies the deletion of CaPMC1 (C. albicans PMC1) encoding the vacuolar Ca(2+) pump. Additive to CaPMC1 mutation, lack of RCH1 alone shows an increase in Ca(2+) sensitivity, Ca(2+) uptake and cytosolic Ca(2+) level. The Ca(2+) hypersensitivity is abolished by cyclosporin A and magnesium. In addition, deletion of RCH1 elevates the expression of CaUTR2 (C. albicans UTR2), a downstream target of the Ca(2+)/calcineurin signalling. Mutational and functional analysis indicates that the Rch1p TM8 domain, but not the TM9 and TM10 domains, are required for its protein stability, cellular functions and subcellular localization. Therefore Rch1p is a novel regulator of cytosolic Ca(2+) homoeostasis, which expands the functional spectrum of the vertebrate SLC10 family.
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Located at the internal border of the Grand-Saint-Bernard Zone, the diorite and its aureole lie on top of intensively studied Alpine eclogitic units but this pluton, poorly studied yet, has kept locally almost undeformed. The pluton intruded, at similar to 360 Ma, country-rocks mostly composed of dark shales with Na2O > K2O and minor mafic intercalations of tholeiitic basalt affinity. This association is characteristic of the Vanoise (France) basement series, where available age determinations suggest an Early Paleozoic age. Parts of the pluton, and of its hornfels aureole that is evidenced here for the first time, in the Punta Bioula section of Valsavaranche valley (NW-Italy), have been well-preserved from the Alpine deformation. Syn-emplacement hardening, dehydration-induced, probably prevented strain-enhanced Alpine recrystallization. Magmatic rock-types range continuously from subordinate mafic types at SiO2 similar to 48%, of hornblendite with cumulative or appinite affinities, to the main body of quartz diorite to quartz monzonite (SiO2 up to 62%). P-T estimates for the pluton emplacement, based on the abundance of garnet in the hornfelses, using also zircon and apatite saturation thermometry and Al-in-hornblende barometry, suggest T similar to 800-950 degrees C and minimum P in the 0.2-0.5 GPa range, with records of higher pressure conditions (up to 1-2 GPa?) in hornblendite phlogopite-cored amphibole. The high-K, Na > K, calcalkaline geochemistry is in line with a destructive plate-margin setting. Based on major element data and radiogenic isotope signature (epsilon Nd-360 Ma from -1.2 to + 0.9, Sr-87/Sr-86(360 MA) from 0.7054 to 0.7063), the parental magmas are interpreted in terms of deep-seated metabasaltic partial melts with limited contamination from shallower sources, the low radiogenic Nd-content excluding a major contribution from Vanoise tholeiites. There is no other preserved evidence for Variscan magmatism of similar age and composition in the Western Alps, but probable analogs are known in the western and northern parts of French Massif Central. Regarding the Alpine tectonics, not only the age of the pluton and its host-rocks (instead of the Permo-Carboniferous age previously believed), but also its upper mylonitic contact, suggest revisions of the Alpine nappe model. The Cogne diorite allegedly constituted the axial part of the E-verging ``pli en retour [backfold] du Valsavaranche'', a cornerstone of popular Alpine structural models: in fact, the alleged fold limbs, as attested here by field and geochemical data, do not belong to the same unit, and the backfold hypothesis is unfounded. (C) 2012 Elsevier B.V. All rights reserved.
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Annual report for the Iowa Civil Rights Commission
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To update trends in childhood cancer mortality in Europe, we analysed mortality data derived from the World Health Organization for all childhood neoplasms, bone and kidney cancers, non-Hodgkin's lymphomas (NHL) and leukaemias, in 30 European countries up to 2007. Between 1990-1994 and 2005-2007, mortality from all neoplasms steadily declined in most European countries (from 5.2 to 3.5/100,000 boys and from 4.3 to 2.8/100,000 girls in the European Union, EU). In 2005-2007, however, mortality rates from childhood cancers were still higher in countries from Eastern (4.9/100,000 boys and 3.9/100,000 girls) and Southern (4.0/100,000 boys and 3.1/100,000 girls) Europe than in those from Western (3.1/100,000 boys and 2.5/100,000 girls) and Northern (3.2/100,000 boys and 2.5/100,000 girls) Europe. Similar temporal trends and geographic patterns were observed for leukaemias, with declines from 1.7 to 0.9/100,000 boys and from 1.3 to 0.7/100,000 girls between 1990-1994 and 2005-2007 in the EU. For kidney cancer and NHL mortality rates were low and have been declining in larger European countries over the last 15years. The pattern of trends was less clear for bone cancer, with no systematic downward trends at age 0-14, though some fall was evident at age 15-19. Thus, mortality from childhood cancer continued to decline over more recent years in most European countries. However, the mortality rates in Eastern - but also Southern - European countries in the mid 2000's were similar to those in the Western and Northern European ones in the early 1990's. Some further improvement in childhood cancer mortality is therefore achievable through more widespread and better adoption of currently available treatments.
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El Sáhara Occidental, el último territorio del mundo pendiente de descolonización, hasufrido durante treinta años el olvido de España y la invasión marroquí. Por ello, elmovimiento nacionalista saharaui ha intentado acceder a la agenda política ymediática española para obtener una solución política al conflicto y el apoyo de laopinión pública de nuestro país.El presente proyecto de investigación propone un acercamiento totalmente inédito; el conflicto saharaui desde el punto de vista comunicativo. A través de las teorías de la agenda-setting y el framing se propone analizar qué marcos políticos ha construido el movimiento saharaui a lo largo de los últimos treinta años y qué incidencia ha obtenido en la prensa nacional española a través de los marcos mediáticos.
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Executive Orders from Governor Ray. Instruct the State Car Dispatcher to require all state-owned vehicles to use low-lead or unleaded gasoline whenever possible.
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Recently it has been shown that the c-Jun N-terminal kinase (JNK) plays a role in thrombin preconditioning (TPC) in vivo and in vitro. To investigate further the pathways involved in TPC, we performed an immunohistochemical study in hippocampal slice cultures. Here we show that the major target of JNK, the AP-1 transcription factor c-Jun, is activated by phosphorylation in the nuclei of neurons of the CA1 region by using phospho-specific antibodies against the two JNK phosphorylation sites. The activation is early and transient, peaking at 90 min and not present by 3 hr after low-dose thrombin administration. Treatment of cultures with a synthetic thrombin receptor agonist results in the same c-Jun activation profile and protection against subsequent OGD, both of which are prevented by specific JNK inhibitors, showing that thrombin signals through PAR-1 to JNK. By using an antibody against the Ser 73 phosphorylation site of c-Jun, we identify possible additional TPC substrates.
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Kirje 9.9.1979
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Kirje 8.9.1970
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Kirje 7.1.1970