Unique Mg-calcite skeletal ultrastructure in the tube of the serpulid polychaete Ditrupa. Neues Jahrbuch für Geologie und Paläontologie - Vinn, Mutvei, et al.Vinn O, Mutvei H, ten Hove HA, Kirsima¨e K (2008c) Unique Mg- calcite skeletal ultrastructure in the tube of the serpulid ...
Petra was described as a rose-red city half as old as time in a John William Burgon‘s Newdigate Prize -winning poem. UNESCO has described Petra as “one of the most precious cultural properties of man’s cultural heritage”. Petra is the spot where Moses (Musa) struck a rock with his...
One of the many challenges of resolving the relationship between archaea and eukaryotes is the curation of representative, high-quality genomes across lineages at their interface. To this end, we verified the complete marker gene coverage of theCa. Heimdallarchaeumspp. as well as six other highly ...
This work investigates the physical properties of Thassos marble which represents a unique heat dissipated stone used in Najaf Holy shrines flooring. XRD was used to detect the phases found in the marble, optical microscopy imaging test was used to reveal the microstructure and grain size. Light ...
Here we chose a calcite system to avoid cement reactivity and to mimic properties of a cement paste at the early age of hydration. Comb-type superplasticizers with various side chains density were studied in sulfated solution. The adsorption was evaluated by measuring the adsorbed amou...
Based on the physico-chemical characteristics of the Eflatunpnar spring water and XRD results of crusts in building stone surface of the monument, it was identified that water can be effective on the formation of calcite and gypsum crusts especially in the lower parts of the monument. However,...
Among the 149 proteins, 9 are unique to Guinea fowl, some are involved in the control of the calcite precipitation (Lysozyme, Ovocleidin-17-like, Ovocleidin-116 and Ovalbumin), 61 are only found in the zone of microstructure shift and 17 are more abundant in this zone. SIGNIFICANCE: The...
Calcite grains form nonrandom boundaries. Most often, three twin disorientations arise, with two of them observed for the first time. Nano-indentation and impact tests demonstrate that the oblique orientation of c-axes significantly improves the hardness and fracture toughness of prisms. Moreover, ...