Reduction of hematite to magnetite under natural and laboratory conditions.

Hydrothermal phase transformation of hematite to magnetite

Different phases of iron oxide were obtained by hydrothermal treatment of ferric solution at 200°C with the addition of either KOH, ethylenediamine (EDA), or KOH and EDA into the reaction system. As usually observed, the α-Fe2O3 hexagonal plates and hexagonal bipyramids were obtained for reaction with KOH and EDA, respectively. When both KOH and EDA were added into the reaction system, we obser...

Radiotelemetric study of hibernation under natural and laboratory conditions.

WANG, LAWRENCE C. H. Radiotelemetric study of hibernation under natural and laboratory conditions. Am. J. Physiol. 224(3): 673-677. 1973.-The body temperature of hibernating Richardson’s ground squirrel (Spermophilus richardsom) was measured by radiotelemetry both in its natural habitat and in the laboratory. Under natural conditions, hibernation extended from mid-September to early March. The ...

Growth of Heterostegina depressa under natural and laboratory conditions

The use of micro-computed tomography (μCT) provides a unique opportunity to look inside the shells of larger benthic foraminifera to investigate their structure by measuring linear and volumetric parameters. For this study, gamonts/schizonts and agamonts of the species Heterostegina depressa d'Orbigny were examined by μCT; each single chamber's volume was digitally measured. This approach enabl...

Cryopreservation of Smirnovia iranica (Sabeti) Seeds and Evaluation of Cryopreserved Seeds under Laboratory, Greenhouse and Natural Habitat Conditions

Smirnovia iranica (Sabeti) synonym: Smirnovia turkestana (Bunge) is a deciduous perennial bushy species of the Fabaceae (Papilionaceae) family. The species grow on sand dunes of desert areas, having a deep vertical root and very long horizontal or lateral roots. They have an important role in natural vegetation of desert and sand dune stabilization. Limited growing areas, grazing due to good pa...

OBSCURA AND DROSOPHILA PERSIMILIS UNDER NATURAL AND UNDER LABORATORY CONDITIONS By THEODOSIUS DOBZHANSKY