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  • 1
    Electronic Resource
    Electronic Resource
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 53 (1997), S. 801-803 
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Journal of statistical physics 24 (1981), S. 451-454 
    ISSN: 1572-9613
    Keywords: Mean spherical approximation ; ionic solutions ; molecular solvents ; ion-dipole mixtures
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract It is shown that the solution of the mean spherical approximation for the ion-dipole mixtures obtained by Blum, Adelman, and Deutch has an explicit closed form solution which is one of the roots of a cubic equation.
    Type of Medium: Electronic Resource
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  • 3
    Publication Date: 2021-06-23
    Description: The Tierra Blanca (TB) eruptive suite comprises the last four major eruptions of Ilopango caldera in El Salvador (≤45 ka), including the youngest Tierra Blanca Joven eruption (TBJ; ∼106 km3): the most voluminous event during the Holocene in Central America. Despite the protracted and productive history of explosive silicic eruptions at Ilopango caldera, many aspects regarding the longevity and the prevailing physicochemical conditions of the underlying magmatic system remain unknown. Zircon 238U‐230Th geochronology of the TB suite (TBJ, TB2, TB3, and TB4) reveals a continuous and overlapping crystallization history among individual eruptions, suggesting persistent melt presence in thermally and compositionally distinct magma reservoirs over the last ca. 80 kyr. The longevity of zircon is in contrast to previously determined crystallization timescales of 〈10 kyr for major mineral phases in TBJ. This dichotomy is explained by a process of rhyolitic melt segregation from a crystal‐rich refractory residue that incorporates zircon, whereas a new generation of major mineral phases crystallized shortly before eruption. Ti‐in‐zircon temperatures and amphibole geothermobarometry suggest that rhyolitic melt was extracted from different storage zones of the magma reservoir as indicated by distinct but synchronous thermochemical zircon histories among the TB suite eruptions. Zircon from TBJ and TB2 suggests magma differentiation within deeper and hotter parts of the reservoir, whereas zircon from TB3 and TB4 instead hints at crystallization in comparatively shallower and cooler domains. The assembly of the voluminous TBJ magma reservoir was also likely enhanced by cannibalization of hydrothermally altered components as suggested by low‐δ18O values in zircon (+4.5 ± 0.3‰).
    Language: English
    Type: info:eu-repo/semantics/article
    Format: application/pdf
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  • 4
    Publication Date: 2021-05-19
    Description: Se evaluó el efecto que produjo en la calidad del pan la reducción de azúcar en la fórmula, sin hacer otras variaciones importantes en el proceso tecnológico. Se emplearon dos calidades de harina diferentes y se aplicó la fórmula con el azúcar a 4 % (base harina) y también con 2 y 0 %, el resto de los ingredientes fueron: harina 100 %, agua 52 %, sal 2 %, grasa 1 %, levadura seca y mejorador 0,3 %. Los panes se elaboraron a escala de laboratorio, por el método directo, con 1 kg de harina. Los análisis que se realizaron a los panes fueron: humedad, volumen específico, altura, diámetro, penetrabilidad de la miga y evaluación sensorial. Con la harina de peor calidad se afectó significativamente (p≤0,05) el color de la corteza y la dureza del pan al disminuir el contendido de azúcar y la calidad global fue significativamente superior solo cuando se empleó el nivel máximo. En los panes donde se utilizó la mejor harina además de variar los indicadores antes mencionados con la reducción de azúcar, se afectaron la compresibilidad, deformación plástica, el desarrollo y la elasticidad, sin embargo, pudo reducirse hasta 2 % de azúcar sin afectar significativamente la calidad del producto.
    Description: The effect produced in the quality of bread by sugar reduction in the formula, without making other significant variations in the technological process, was evaluated. Two different qualities of flour were used and the formula was applied with sugar to 4% (flour bases) and also with 2 and 0%, the rest of the ingredients were: flour 100%, water 52%, salt 2%, fat 1%, dry yeast and bread improver, 0.3%. The breads were made in laboratory scale, by direct method, with 1 kg of flour. The analyses carried out on the breads were: moisture, specific volume, height, diameter, crumb penetrability and sensorial evaluation. With the worst flour quality, the crust color and the hardness of bread were affected significantly (p≤0.05) when the sugar content was diminished and the global quality was significantly superior only when the maximum level was used. In the breads prepared with the best flour in addition to the variations mentioned before, sugar reduction affected compressibility, plastic deformation, development and elasticity; however, it was possible to reduce sugar content up to 2 % without significantly affecting the quality of the product.
    Description: Published
    Keywords: Bread ; Rheological properties ; Wheat flour ; Cane sugar ; Quality
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed , Article
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  • 5
    Publication Date: 2016-04-15
    Description: Venous thromboembolism (VTE) is the third most common life-threatening cardiovascular condition in the United States, with African Americans (AAs) having a 30% to 60% higher incidence compared with other ethnicities. The mechanisms underlying population differences in the risk of VTE are poorly understood. We conducted the first genome-wide association study in AAs, comprising 578 subjects, followed by replication of highly significant findings in an independent cohort of 159 AA subjects. Logistic regression was used to estimate the association between genetic variants and VTE risk. Through bioinformatics analysis of the top signals, we identified expression quantitative trait loci (eQTLs) in whole blood and investigated the messenger RNA expression differences in VTE cases and controls. We identified and replicated single-nucleotide polymorphisms on chromosome 20 (rs2144940, rs2567617, and rs1998081) that increased risk of VTE by 2.3-fold ( P 〈 6 x 10 –7 ). These risk variants were found in higher frequency among populations of African descent (〉20%) compared with other ethnic groups (〈10%). We demonstrate that SNPs on chromosome 20 are cis -eQTLs for thrombomodulin ( THBD ), and the expression of THBD is lower among VTE cases compared with controls ( P = 9.87 x 10 –6 ). We have identified novel polymorphisms associated with increased risk of VTE in AAs. These polymorphisms are predominantly found among populations of African descent and are associated with THBD gene expression. Our findings provide new molecular insight into a mechanism regulating VTE susceptibility and identify common genetic variants that increase the risk of VTE in AAs, a population disproportionately affected by this disease.
    Keywords: Free Research Articles, Thrombosis and Hemostasis
    Print ISSN: 0006-4971
    Electronic ISSN: 1528-0020
    Topics: Biology , Medicine
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