Tales of E. T. A. Hoffmann

Hoffmann, E. T. A.; Kent, Leonard J.; Knight, Elizabeth C.

doi:10.7208/chicago/9780226219165.001.0001

Cited by 24 publications

(22 citation statements)

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“…Fur die Korrosionsphanomene spielen neben den thermodynamischen Daten noch die physikalischen und chemischen Eigenschaften der entstehenden Oxide eine Rolle. Daher Nach (6,9) sind in GI. (6) die Sattigungskonzentrationen…”

Section: Mechanismen Der Wechselwirkung Zwischen Lithium Und Festen Munclassified

Zur Korrosionsbeständigkeit von Vanadium und Vanadiumlegierungen als Strukturwerkstoffe in einem lithiumgekühlten Fusionsreaktor

Borgstedt

1977

Materials & Corrosion

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Durch die Bestimmung der Lochfras, Durchbruchs-und Repassivierungspotentiale und durch die Ergebnisse der Dauertauchversuche wurde das Korrosionsverhalten der Aluminiumlegierung AlMgMn mit verschiedenen Oberflachenzustanden in Bonner Brunnenwasser charakterisiert und festgelegt. Die verschiedenen Oberflachenzustande tellenmit Ausnahme der anodisch oxidierenden ,,Veroxa&"-Schicht keinen oder nur einen temporaren Schutz im Vergleich zu dem Ausgangszustand, gewalzt, dar. Die Festlegung des Passivbereiches fur ein bestimmtes Korrosionssystem durch elektrochemische Messungen im Laboratorium ermoglicht es, an korrosionsbeanspruchten Aluminiumbauteilen durch die Messung des Freien Korrosionspotentials festzustellen, ob zur Zeit der Messung rnit der Bildung und dem Wachstum von lokal lochformigen Korrosionsstellen zu rechnen ist, so dat) gegebenenfalls entsprechende Korrosionsschutzmafinahmen getroffen werden konnen. Der Autor dankt Herrn Prof. Dr. W. Gruhl und Herrn Dr. F. E. Faller fiir ihren fachlichen Rat. Fiir die sorgfaltige Durchfuhrung der Messungen ist er Frau Krajewski und Frau Wefers und fur die Schreibarbeiten Frau Lehmann zu Dank verpflichtet.

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Section: Mechanismen Der Wechselwirkung Zwischen Lithium Und Festen Munclassified

Zur Korrosionsbeständigkeit von Vanadium und Vanadiumlegierungen als Strukturwerkstoffe in einem lithiumgekühlten Fusionsreaktor

Borgstedt

1977

Materials & Corrosion

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“…The gene encoding TFIID has recently been cloned from a variety of organisms, making it feasible to address some of the questions concerning the mechanism of transcriptional stimulation by upstream activators. A comparison of the TFHD sequences from Saccharomyces cerevisiae (Cavallini et al, 1989;Hahn et al, 1989;Horikoshi et al, 1989;Schmidt et al, 1989b), Schizosaccharomyces pombe (Fikes et al, 1990;Hoffmann et al, 1990b), Drosophila (Hoey et al, 1990), Arabidopsis (Gasch et al, 1990) and human (Hoffmann et al, 1990a; Kao et al, 1990;Peterson et al, 1990) indicates that the protein is composed of a highly divergent amino terminus of varying length, and a very conserved carboxy terminus of -180 amino acid residues. For S. cerevisiae TFIID (YIID), the conserved domain begins at residue 61.…”

Section: Introductionmentioning

confidence: 99%

Requirement for acidic amino acid residues immediately N-terminal to the conserved domain of Saccharomyces cerevisiae TFIID.

1991

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TFIID binds to TATA boxes and initiates the assembly of general transcription factors and pol II on promoters. TFIID proteins from various species consist of a highly conserved carboxy terminal domain and very divergent amino terminal domains. We investigated the function of the non‐conserved amino terminal domain (residues 1–60) of Saccharomyces cerevisiae TFIID (YIID, 240 residues) by testing the ability of a series of YIID amino terminal deletion mutants to complement a YIID deficient yeast strain. Mutants with deletions up to amino acid 48 restored the YIID deficient yeast strain to an apparently wild type phenotype. However, deletion up to position 57 or 60 produced yeast strains which formed extremely small colonies. Moreover, overexpression of YIID delta 2–57 or YIID delta 3–60 protein in the presence of wild type YIID resulted in a dominant‐negative inhibition of growth. No difference between the basal transcriptional activity of wild type YIID and these amino terminal deletion mutants was observed in vitro. However, transcriptional activation in vivo of promoter‐lacZ fusions showed that the YIID delta 2–57 deletion affects the ability of certain promoters (CUP1 and an HSP UAS‐CYC1 promoter hybrid promoter) to respond to upstream factor stimulation. At least one inducible promoter, PHO5, was not affected by this deletion. The defect produced by YIID delta 2–57 was due to the deletion of several acidic residues present between residues 48 and 57. The results show that the conserved carboxy terminal domain of YIID is sufficient for cell viability. However, an acidic region just amino terminal to the conserved domain is required for normal growth and transcription control in most yeast strains.

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“…Barium (Ba) is an alkaline earth metal and highly incompatible during mantle melting (Eugster et al 1969, Pilet et al 2011, Miyazaki et al 2014, Rudnick and Gao 2014, Moynier et al 2015, van Zuilen et al 2016b, Charbonnier et al 2018, Nan et al 2018. Barium occurs as a substitute for potassium in common rock-forming minerals, such as feldspars, or as discrete Ba-bearing minerals such as barite (BaSO 4 ) and witherite (BaCO 3 ) in ore deposits in the continents (Hoffmann 1969). Barium is also widely distributed in soil pore waters, river waters and river sediments, seawater and biospheric compartments (Bullen and Chadwick 2016).…”

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confidence: 99%

Barium Isotopic Compositions in Thirty‐Four Geological Reference Materials Analysed by MC‐ICP‐MS

Zhang

2019

Geostandard Geoanalytic Res

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Measurement of Ba isotope ratios of widely available reference materials is required for interlaboratory comparison of data. Here, we present new Ba isotope data for thirty‐four geological reference materials, including silicates, carbonates, river/marine sediments and soils. These reference materials (RMs) cover a wide range of compositions, with Ba mass fractions ranging from 6.4 to 1900 µg g−1, SiO2 from 0.62% to 90.36% m/m and MgO from 0.08% to 41.03% m/m. Accuracy and precision of our data were assessed by the analyses of duplicate samples and USGS rock RMs. Barium isotopic compositions for all RMs were in agreement with each other within uncertainty. The variation of δ138/134Ba in these RMs was up to 0.7‰. The shale reference sample, affected by a high degree of chemical weathering, had the highest δ138/134Ba (0.37 ± 0.03‰), while the stream sediment obtained from a tributary draining carbonate rocks was characterised by the lowest δ138/134Ba (−0.30 ± 0.05‰). Geochemical RMs play a fundamental role in the high‐precision and accurate determination of Ba isotopic compositions for natural samples with similar matrices. Analyses of these RMs could provide universal comparability for Ba isotope data and enable assessment of accuracy for interlaboratory data.

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Tales of E. T. A. Hoffmann

Cited by 24 publications

References 0 publications

Zur Korrosionsbeständigkeit von Vanadium und Vanadiumlegierungen als Strukturwerkstoffe in einem lithiumgekühlten Fusionsreaktor

Zur Korrosionsbeständigkeit von Vanadium und Vanadiumlegierungen als Strukturwerkstoffe in einem lithiumgekühlten Fusionsreaktor

Requirement for acidic amino acid residues immediately N-terminal to the conserved domain of Saccharomyces cerevisiae TFIID.

Barium Isotopic Compositions in Thirty‐Four Geological Reference Materials Analysed by MC‐ICP‐MS

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