972 resultados para 3-17-1
Resumo:
To enhance the limited information available about the palaeo-ecological significance of calcareous dinoflagellates, we have studied their lateral distribution in surface sediments of the equatorial and south Atlantic between 13°N and 36°S. Calcareous dinoflagellate cysts appear to be widely distributed throughout the studied area. In the surface sediments, concentrations (cyst per gram dry sediment) of the vegetative stage Thoracosphaera heimii are generally higher than that of the (presumably) calcareous resting cysts. Distribution patterns in surface sediments of Orthopithonella granifera (Fütterer) Keupp and Versteegh, Rhabdothorax spp. Kamptner., Sphaerodinella albatrosiana (Kamptner) Keupp and Versteegh S. albatrosiana praratabulated, Sphaerodinella tuberosa var. 1 (Kamptner) Keupp and Versteegh and S. tuberosa var. 2 and the ratios between these species have been compared with temperature, salinity, density and stratification gradients in the upper water column. Rhabdothorax spp. is characteristically present in sediments of more temperate regions characterized by high seasonality. Dinoflagellates producing these cysts are able to tolerate high nutrient concentrations, and mixing of the water column. S. albatrosiana is abundant in regions characterized by high sea surface temperatures and oligotrophic surface water conditions. In contrast, the distribution of S. tuberosa var. 2 is negatively related to temperature. The other cyst species did not show a characteristic pattern in relation to the studied environmental gradients. The ratio of Sphaerodinella tuberosa var. 2 to Orthopithonella granifera can be used for reconstructing the presence of stratification in the upper 50 m of the water column, whereas the ratios of S. tuberosa var. 2 to Sphaerodinella albatrosiana and of O. granifera to Rhabdothorax spp. might be used for palaeotemperature reconstructions. Calcareous dinoflagellate cysts are abundant in oligotrophic areas and may be useful for the reconstruction of palaeoenvironmental conditions.
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Ikeno Taiga; H: 5 ft. 3 17/64 in.; one of a pair of 6-fold screens, ink and color on paper
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"Notes. Verschiedene Essays"; Diese Mappe enthielt ursprünglich Fassungen von Aphorismen aus dem Umkreis von "Dialektik der Aufklärung", die den entsprechenden Stücken zugeordnet wurden; außerdem:; 1. Auszüge aus Thomas Hobbes, Leviathan; englisch, Anfang und Schluss fehlen. Typoskript, 5 Blatt; 2. Das Allgemeine nicht tiefer als das Besondere [= "Klassifikation" in der 'Dialektik der Aufklärung']. Typoskript, 1 Blatt; 3. Müßiggang als Merkmal vorbürgerlichen und nachbürgerlichen Zeitalters [GS 12, S. 315]. Typoskript, 1 Blatt; Thesen über Antisemitismus; Zumindest teilweise Vorarbeiten zum Kapitel "Elemente des Antisemitismus" der 'Dialektik der Aufklärung', 1943:; 1. Teilstück aus Abschnitt IV der "Elemente". Typoskript mit eigenen Korrekturen und Manuskript, 4 Blatt; 2. Teilstück aus Abschnitt V der "Elemente". Typoskript, 2 Blatt; 3. Antisemitismus als rationalisierte Ideosynkrasie. Typoskript mit eigenen Korrekturen, 1 Blatt; 4. Mimikry und Selbsterhaltung, Teilstücke:; 4a) Typoskript mit eigenen Korrekturen, 1 Blatt; 4b) Typoskript mit eigenen Korrekturen, 2 Blatt; 4c) Typoskript mit eigenen Korrekturen, 1 Blatt; 5. Technokratie und Faschismus. Teilstück, Typoskript, 1 Blatt; 6. Antisemitismus als verschobener Haß gegen kapitalistische Ausbeutung; Protokoll einer Diskussion zwischen Max Horkheimer und Theodor W. Adorno. Typoskript, 2 Blatt; 7. Über antisemitische Ideosynkrasie; Protokoll einer Diskussion zwischen Max Horkheimer und Theodor W. Adorno zur "Dialektik der Aufklärung", 'Elemte des Antisemitismus', These 4. Fragment, Typoskript, 1 Blatt; 8. Über Mimesis; Protokoll einer Diskussion zwischen Max Horkheimer und Theodor W. Adorno [GS 12, S. 587 ff.]. Typoskript, 3 Blatt; 9. - 10. Über Probleme der Erkenntnis des Antisemitismus in der Tradition der Humanwissenschaften. Typoskript, englisch, mit eigenen Korrekturen, 2 Blatt; 11. Völkischer Antisemitismus; Korrekturblatt. Manuskript, 4 Blatt; 12. Eigene und handschriftliche Notizen, 22 Blatt; 13. Exzerpte aus Werken Friedrich Nietzsches. Typoskript, 3 Blatt; 14. Exzerpt aus Gregorovius: "Wanderjahre in Italien". Typoskript, 1 Blatt; 15. Adorno, Theodor W.: Über antisemitische Propaganda. Typoskript mit eigenen Korrekturen, 6 Blatt; 16. Adorno, Theodor W.: Eigene Notizen, 3 Blatt; 17. 1 Zeitungsausschnitt, 1 Blatt; Manuskripte und Entwürfe als Vorarbeiten oder aus dem Umkreis der "Dialektik der Aufklärung":; 1. Über das Verhältnis von Naturbeherrschung und gesellschaftlicher Herrschaft; [von Theodor W. Adorno ?]. Entwurf, Typoskript, 3 Blatt; 2. Theodor W. Adorno [?]: Über Mythologie und Aufklärung. Typoskript mit eigenen Korrekturen, 13 Blatt; 3. Über das Verhältnis von Ökonomie und Politik in Liberalismus und Spätkapitalismus [GS 12, S. 316 - 318]. Typoskript mit eigenen Korrekturen, 3 Blatt; 4. Über den Begriff des Geistes in der materialistischen Aufklärung: Element der Macht. Teilstück, Typoskript und Manuskript, 1 Blatt; 5. Eigene Notizen u.a. über: Verhältnis von Geist und Natur, Verhältnis der Freudschen Methode zum Positivismus; Entwurf des Romans über Neville Chamberlain; 1942:; 1. "Grober Umriß der Handlung". Typoskript, 12 Blatt; 2. Anfang des Romans [GS 12, S. 329 - 341]:; 2a) Typoskript mit eigenen Korrekturen, 3 Blatt und eigene Notiz, 1 Blatt; 2b) Typoskript mit eigenen Korrekturen, 2 Blatt; 2c) Typoskript mit eigenen Korrekturen, 1 Blatt; 3. Exzerpte aus Schriften über Chamberlain, gesammelt von Herbert Marcuse. Typoskript, 8 Blatt, mit einer eigenen Notiz von Friedrich Pollock für Max Horkheimer, 1 Blatt; 4. Abschriften aus Zeitungsartikeln über Chamberlain. Typoskript, 22 Blatt; 5. Bibliotheks-Leihscheine und Literaturangaben. Handschriftliche Notizen, 10 Blatt; Über Psychoanalyse; um 1942. Fragment, Typoskript mit eigenen Korrekturen, 4 Blatt; Über Rackets, ihre Bedeutung von der Antike bis zum Kapitalismus; Zu einer Theorie des Proletariats; 1942:; 1. Notizen zum Programm des Buches, 30.8.1942. 2 Blatt; 2. Exzerpte aus Schriften zur Geschichte der Rackets (von Theodor W. Adorno). Typroskript, 30 Blatt; "Betrachtungen zum Curfew" [GS 5, S. 351 - 353]; um 1942:; a) Typoskript mit eigenen Korrekturen, 3 Blatt; b) Typoskript mit eigenen Korrekturen, 3 Blatt; c) Teilstück, Typoskript mit eigenen Korrekturen, 2 Blatt; d) Teilstück, Typoskript mit eigenen Korrekturen, 2 Blatt; e) Typoskript-Manuskript, 2 Blatt; "Sociology of Art" [GS 5, S. 360 - 363], 1942/1943; veröffentlicht in "Encyclopedia of the Arts", New York, 1946:; a) Typoskript, 4 Blatt; b) Photokopie des Drucks, 2 Blatt; Adorno, Theodor W.: Über Paul Tillich, "Man and Society in Religious Socialism"; Entwurf eines Briefs, 16.2.1944. Typoskript mit handschriftlichen Korrekturen von Theodor W. Adorno. 26 Blatt; "The Crisis of the Family", aus Max Horkheimers "Autorität und Familie. Allgemeiner Teil" (Paris 1936) zusammengestellt und übersetzt von Norbert Guterman (S. 63-76 und 49 - 63), 1945 ? Typoskript, 29 Blatt; New Yorker Notizen [II], 1945:; 1. "Dialektik - Mittelwek"; "Notizen zur Dialektik" [GS 12, S. 297 - 302]. Typoskript mit eigenen Korrekturen, 8 Blatt; 2. "Ritterlichkeit" [GS 12, S. 225 - 227]. Typoskript mit eigenen Korrekturen, 4 Blatt; 3. "Soziologische Unterscheidungen" [GS 12, S. 302 - 303]. Typoskript, 2 Blatt; 4. "Vertragstheorie". a) Typoskript, 6 Blatt. b) Typoskript mit eigenen Korrekturen, 7 Blatt; 5. "Bürgerliche Welt" [GS 12, S. 227 - 232]. Typoskript, 8 Blatt; 6. "Enge des Herzens" [GS 12, S. 232 - 234]. Typoskript, 2 Blatt; 7. "Unabänderlichkeit?" [GS 12, S. 234 - 237]. Typoskript mit eigenen Korrekturen, 6 Blatt; 8. "Die Juden und der Eid" [GS 12, S. 303 - 305]:; 8a) Typoskript mit eigenen Korrekturen, 3 Blatt; 8b) Typoskript mit handschriftlichen Korrekturen, 3 Blatt; 8c) Typoskript mit eigenen Korrekturen, 2 Blatt; 9. "Das Rationale und das Irrationale" [GS 12, S. 306]. Typoskript, 1 Blatt; 10. "Zur Dialektik" - "Zur Architektur" - "Zum Commerce" - "Text zu einer Illustration aus 'La Femme 100 tetes'" [GS 12, S. 306 - 308]. Typoskript, 2 Blatt; 11. "On Vivisection" = Brief an Ned R. Healy, New York, 22.3.1945. Typoskript, 2 Blatt; 12. "Der 'Schrecken' in der französischen Revolution" [GS 12, S. 238 - 239]. Typoskript mit eigenen Korrekturen, 3 Blatt; 13. "Autorität und Vernunft" [GS 12, S. 239 - 243]:; 13a) Typoskript mit eigenen Korrekturen, 6 Blatt; 13b) Typoskript mit dem Titel "Faschismus und gesellschaftliche Ordnung", 6 Blatt; 13c) Typoskript mit eigenen Korrekturen, 7 Blatt; 14. "Zum Gottesbegriff":; 14a) Typoskript, 4 Blatt; 14b) Typoskript mit eigenen Korrekturen, 4 Blatt; 15. "Der Mensch verändert sich in der Geschichte" [GS 12, S. 244 - 246]:; 15a) Typoskript, 3 Blatt; 15b) Typoskript, 3 Blatt; 16. "Zur materialistischen Geschichtstheorie" [GS 12, S. 246 - 247]. Typoskript, 2 Blatt; 17. "Die schlechten Elemente des Liberalismus" [GS 12, S. 247 - 249]:; 17a) Typoskript, 3 Blatt; 17b) Typoskript mit eigenen Korrekturen, 3 Blatt;
Resumo:
Several tetrazolo[1,5-a] pyridines/2-azidopyridines undergo photochemical nitrogen elimination and ring expansion to 1,3-diazacyclohepta-1,2,4,6-tetraenes (7,10,13,16,19,22) as well as ring cleavage to cyanovinylketenimines (8,17,20b) in low temperature Ar matrices. 6,8-Dichlorotetrazolo[1,5-a] pyridine/2-azido-3,5-dichloropridine 6 undergoes ready exchange of the chlorine in position 8 (3) with ROH/RONa. 8-Chloro-6-trifluoromethyltetrazolo[1,5-a] pyridine 15 undergoes solvolysis of the CF3 group to afford 8-chloro-6-methoxycarbonyltetrazolo[1,5-a] pyridine 18. Several tetrazolopyridines/2-azidopyridines afford 1H- or 5H-1,3-diazepines in good yields on photolysis in the presence of alcohols or amines (11,14,23,25). 5-Chlorotetrazolo[1,5-a] pyridines/2-azido-6-chloropyridines 21 and 38 undergo a rearrangement to 1H- and 3H-3-cyanopyrroles 27 and 45, respectively. The mechanism of this rearrangement was investigated by N-15-labelling and takes place via transient 1,3-diazepines. The structures of 6,8-dichloro-tetrazolo[1,5-a] pyridine 6T, 6-chloro-8-ethoxytetrazolo[1,5-a] pyridine 9Tb, dipyrrolylmethane 28, and 2-isopropoxy-4-dimethylamino-5H-1,3-diazepine 25b were determined by X-ray crystallography. In the latter case, this represents the first reported X-ray crystal structure of a 5H-1,3-diazepine.
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Partially supported by the Technical University of Gabrovo under Grant C-801/2008
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The air trapped in freshly formed ice gives information concerning the ice formation processes as weH as concerning severa,l environmental parameters at the time of ice formation. Air arnount, air composition, and the size and form of bubbles may change with time. Possible processes responsible for such changes are discussed. In very cold ice air content and air composition remain almost unchanged. Samples of ancient atmospheric air are therefore very weH preserved in cold ice. In temperate ice changes of the air amount and air composition depend on the intergranular water fiow through the glacier. This waterfiow can be estimated by measuring air amount and air composition in ice sampIes.
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Purpose: To evaluate the antibacterial, enzyme-inhibitory and hemolytic activities of Salkylated/ aralkylated 2-(1H-indol-3-ylmethyl)-1,3,4-oxadiazole-5-thiol derivatives. Methods: Antibacterial activities of the compounds were evaluated using broth dilution method in 96 well plates. Enzyme inhibitory activities assays were investigated against α-glucosidase, butyrylcholinesterase (BchE) and lipoxygenase (LOX) using acarbose, eserine and baicalien as reference standards, respectively. A mixture of enzyme, test compound and the substrate was incubated and variation in absorbance noted before and after incubation. In tests for hemolytic activities, the compounds were incubated with red blood cells and variations in absorbance were used as indices their hemolytic activities. Results: The compounds were potent antibacterial agents. Five of them exhibited very good antibacterial potential similar to ciprofloxacin, and had minimum inhibitory concentrations (MIC) of at least 9.00 ± 4.12 μM against S. aureus, E.coli, and B. subtilis. One of the compounds had strong enzyme inhibitory potential against α-glucosidase, with IC50 of 17.11 ± 0.02 μg/mL which was better than that of standard acarbose (IC50 38.25 ± 0.12 μg/mL). Another compound had 1.5 % hemolytic activity. Conclusion: S-Alkylated/aralkylated 2-(1H-indol-3-ylmethyl)-1,3,4-oxadiazole-5-thiol deviratives with valuable antibacterial, anti-enzymatic and hemolytic activities have been successfully synthesized. These compounds may be useful in the development of pharmaceutical products.
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Flinders University and Queensland University of Technology, biofuels research interests cover a broad range of activities. Both institutions are seeking to overcome the twin evils of "peak oil" (Hubbert 1949 & 1956) and "global warming" (IPPC 2007, Stern 2006, Alison 2010), through development of Generation 1, 2 and 3 (Gen-1, 2 & 3) biofuels (Clarke 2008, Clarke 2010). This includes development of parallel Chemical Biorefinery, value-added, co-product chemical technologies, which can underpin the commercial viability of the biofuel industry. Whilst there is a focused effort to develop Gen-2 & 3 biofuels, thus avoiding the socially unacceptable use of food based Gen-1 biofuels, it must also be recognized that as yet, no country in the world has produced sustainable Gen-2 & 3 biofuel on a commercial basis. For example, in 2008 the United States used 38 billion litres (3.5% of total fuel use) of Gen-1 biofuel; in 2009/2010 this will be 47.5 billion litres (4.5% of fuel use) and in 2018 this has been estimated to rise to 96 billion litres (9% of total US fuel use). Brazil in 2008 produced 24.5 billion litres of ethanol, representing 37.3% of the world’s ethanol use for fuel and Europe, in 2008, produced 11.7 billion litres of biofuel (primarily as biodiesel). Compare this to Australia’s miserly biofuel production in 2008/2009 of 180 million litres of ethanol and 75 million litres of biodiesel, which is 0.4% of our fuel consumption! (Clarke, Graiver and Habibie 2010) To assist in the development of better biofuels technologies in the Asian developing regions the Australian Government recently awarded the Materials & BioEnergy Group from Flinders University, in partnership with the Queensland University of Technology, an Australian Leadership Award (ALA) Biofuel Fellowship program to train scientists from Indonesia and India about all facets of advanced biofuel technology.
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We have analyzed a frondelite mineral sample from the Cigana mine, located in the municipality of Conselheiro Pena, a well-known pegmatite in Brazil. In the Cigana pegmatite, secondary phosphates, namely eosphorite, fairfieldite, fluorapatite, frondelite, gormanite, hureaulite, lithiophilite, reddingite and vivianite are common minerals in miarolitic cavities and in massive blocks after triphylite. The chemical formula was determined as (Mn0.68, Fe0.32)(Fe3+)3,72(PO4)3.17(OH)4.99. The structure of the mineral was assessed using vibrational spectroscopy. Bands attributed to the stretching and bending modes of PO4 3- and HOPO3 3- units were identified. The observation of multiple bands supports the concept of symmetry reduction of the phosphate anion in the frondelite structure. Sharp Raman and infrared bands at 3581 cm−1 is assigned to the OH stretching vibration. Broad Raman bands at 3063, 3529 and 3365 cm−1 are attributed to water stretching vibrational modes.
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The structures of the cocrystalline adducts of 3,5-dinitrobenzoic acid (3,5-DNBA) with 4-aminosalicylic acid (PASA), the 1:1 partial hydrate, C7H4N2O6 .C7H7NO3 . 2H2O, (I) and 2-hydroxy-3-(1H-indol-3-yl)propenoic acid (HIPA) and the 1:1:1 d6-dimethylsulfoxide solvate, C7H4N2O6 . C11H9NO3 . C2D6OS, (II) are reported. The crystal substructure of (I) comprises two centrosymmetric hydrogen-bonded R2/2(8) homodimers, one with 3,5-DNBA, the other with PASA, and an R2/2(8) 3,5-DNBA-PASA heterodimer. In the crystal, inter-unit amine N-H...O and water O-H...O hydrogen bonds generate a three-dimensional supramolecular structure. In (II), the asymmetric unit consists of the three constituent molecules which form an essentially planar cyclic hydrogen-bonded heterotrimer unit [graph set R2/3(17)] through carboxyl, hydroxy and amino groups. These units associate across a crystallographic inversion centre through the HIPA carboxylic acid group in an R2/2~(8) hydrogen-bonding association, giving a zero-dimensional structure lying parallel to (100). In both structures, pi--pi interactions are present [minimum ring centroid separations: 3.6471(18)A in (I) and 3.5819(10)A in (II)].