Suche
Anzeige der Dokumente 431-440 von 933
Two new species of megasporangiate Sigillariostrobus Schimper (Sigillariostrobaceae) fructifications from the British Coal Measures
(
- Fossil Record
, 2015)
The arborescent lycophyte group known as the sigillarians
bore pedunculate fructifications, including Sigillariostrobus
Schimper, which has a known propensity to disaggregate,
making comparisons of cones and in situ ...
Efficient synthesis of readily water-soluble sulfonic Acid carbamates.
(
- Molecules (Basel, Switzerland)
, 2015)
A series of various readily water-soluble carbamates were synthesized with good yields. These compounds are useful chemical tracers for assessing the cooling progress in a georeservoir during geothermal power plant operation. ...
Marble bowing: comparative studies of three different public building facades
(
- Environmental geology
- Environmental geology
, 2008)
The veneer cladding of the Oeconomicum (OEC, Göttingen), the State Theatre of Darmstadt (STD, Darmstadt) and of the State and University Library (SUB, Göttingen) is characterised by pronounced bowing after a short time of ...
Lebend- und Totengemeinschaften von Süßwassermollusken des Tegeler Sees
(
- 25 Jahre Paläontologie FU Berlin
, 1989)
Catshark egg capsules from a Late Eocene deep-water methane-seep deposit in western Washington State, USA
(
- Acta Palaeontologica Polonica
, 2011-11-08)
Fossil catshark egg capsules, Scyliorhinotheca goederti gen. et sp. nov., are reported from a Late Eocene deep−water
methane−seep calcareous deposit in western Washington State, USA. The capsules are preserved three−dimensionally ...
Highly isotopically depleted isoprenoids ; molecular markers for ancient methane venting
(
- Geochimica et cosmochimica acta
, 1999)
We propose that organic compounds found in a Miocene limestone from Marmorito (Northem
Italy) are source markers for organic matter present in aneient methane vent systems (cold seeps). The
limestone contains high ...
Redetermination and invariom refinement of 1-cyclopropyl-6-fluoro-4-oxo-7-(piperazin-4-ium-1-yl)-1,4-dihydroquinoline-3-carboxylate hexahydrate at 120 K
(
- Acta Crystallographica Section E Structure Reports Online
, 2008)
The structure of the title compound, C17H18FN3O3 6H2O, has
been redetermined at 120 K. An invariom refinement, a
structural refinement using aspherical scattering factors from
theoretically predicted multipole population ...
Hydrogen incorporation in enstatite in the system MgO-SiO2-H2O-NaCl
(
- Contributions to mineralogy and petrology
- Contributions to mineralogy and petrology
, 2008)
The incorporation of hydrogen in enstatite in a hydrous system containing various amounts of NaCl was investigated at 25 kbar. The hydrogen content in enstatite shows a clear negative correlation to the NaCl-concentration ...
Cytenamide acetic acid solvate
(
- Acta Crystallographica Section E Structure Reports Online
, 2008)
In the crystal structure of the title compound (systematic
name: 5H-dibenzo[a,d]cycloheptatriene-5-carboxamide ethanoic
acid solvate), C16H13NO C2H4O2, the cytenamide and
solvent molecules form a hydrogen-bonded R2
2(8) ...
Fossilien aus dem Oligozän von Sieblos/Rhön
(
- Fossilien
, 1991)