scholarly journals MEDIEVAL FLANGED TILES FROM THE SOUTH-WESTERN CRIMEA: PROBLEMS OF PRODUCTION LOCALIZATION, TYPOLOGY AND CHRONOLOGY

2021 ◽  
Vol 40 (3) ◽  
pp. 57-88
Author(s):  
D. A. Moiseiev
Keyword(s):  
Morphological Description ◽  
Tile Production ◽  
The South ◽  
Field Guide ◽  
Unified Field ◽  
Large Complex ◽  
Development And Evolution ◽  
Medieval Time

This text is about the problem of typology, localization of the producing and dating of medieval building ceramics (Flanged tiles) of the South-Western Crimea. The investigation of products of tile production centers in the South-Western Crimea allowed to systematize a large complex of archaeological sources. They came from various archeological sites that were located throughout the region. Technological and morphological typology allowed to arrange and dating all this complexes and different material in some cases with an accuracy of up to two decades. The unified technological and morphological description and typology of the material described development and evolution of tile production craft in the South-Western Crimea trough the Medieval time. Therefore, this work could be a variant of a unified field guide for medieval Flanged tiles from Crimean sites and a chronological chart for them.

scholarly journals Study of an abnormal occurrence of Oxisols in strongly undulated relief in the south of Minas Gerais, Brazil, with support of pXRF and geomorphology

2021 ◽  
Vol 45 ◽  
Author(s):  
Fernanda Almeida Bócoli ◽  
Walbert Júnior Reis dos Santos ◽  
Sérgio Henrique Godinho Silva ◽  
Anita Fernanda dos Santos Teixeira ◽  
Marcelo Mancini ◽  
...  
Keyword(s):  
Water Flux ◽  
Rare Condition ◽  
Minas Gerais ◽  
Morphological Description ◽  
The South ◽  
Weathering Degree ◽  
Fe Content ◽  
Minas Gerais State ◽  
Unusual Occurrence ◽  
Surrounding Areas

ABSTRACT Oxisols are the main soils in Brazil and they classically occur in stable and gentle geomorphic surfaces. However, in the south of Minas Gerais State, Oxisols have been observed under strongly undulated relief, a very rare condition for these soils in this physiographic region. Therefore, this work aimed to assess the elemental dynamics and relief enhanced with portable X-ray fluorescence (pXRF) spectrometry, associated to geomorphology, to understand such occurrence. The studied soils are located in Muzambinho municipality, Minas Gerais State, Brazil. Oxisol profiles were characterized in the upper third (P1), middle third (P2) and lower third (P3) of the hillslope. After morphological description, soil samples were collected in the A, AB and Bo horizons of the profiles. Physical, chemical and pXRF analyses of the soils were carried out in the laboratory. Ti and Fe content (pXRF) had a high correlation with the soil textural fractions. High weathering-leaching degrees were determined, although they occur on a steep slope where younger soils (Inceptisols) would be expected in this region. The altitudinal concordance of summits observed in the more elevated surrounding areas indicates a flat paleorelief, helping to explain this unusual occurrence. The soils’ weathering degree values decreased down the hillslope, indicating silica enrichment through runoff and subsuperficial water flux in the lower landscape positions. The pXRF analyses assisted the characterization of these old soils occurring in steep relief. It provided bases for confirming their high weathering degree indexes and detected evidences of the pre-weathering of the regolith of this very old landscape.

Agrionympha, the long-known South African jaw moths: a revision with descriptions of new species (Lepidoptera, Micropterigidae)

Zootaxa ◽  
2011 ◽  
Vol 2764 (1) ◽  
pp. 1 ◽  
Author(s):  
GEORGE W. GIBBS ◽  
NIELS P. KRISTENSEN
Keyword(s):  
South Africa ◽  
South African ◽  
Morphological Description ◽  
Key To Species ◽  
The South ◽  
Single Male ◽  
Male Specimen ◽  
The Family ◽  
The Face ◽  
Males And Females

The South African micropterigid genus Agrionympha Meyrick, 1921 has long been known from a single male specimen and very few females with three named species. This revision, based on more recent discoveries, brings the total named species to nine, by the addition of A. fuscoapicella sp. nov., A. jansella sp. nov., A. karoo sp. nov., A. kroonella sp. nov., A. pseudovari sp. nov., A. sagittella sp. nov., and notes the presence of a tenth species, represented only by two males in alcohol. The South Afrrican micropterigid fauna is thus quite diverse although, apart from the presence of another as yet undescribed genus, turns out to be a phenetically tightly-knit assemblage of highly conservative species. This revision provides a morphological description of males and females and includes larval features and a key to species. The micropterigid fauna of South Africa together with recently discovered taxa from Madagascar comprise part of what is regarded as the ‘southern sabatincoid’ lineage within the family—a weakly supported clade also including representatives from Australia, Chile, Ecuador, and Costa Rica. The survival of these small archaic rainforest moths in the face of increasing aridity is discussed.

Presidential Republicanism in the South, 1960

1962 ◽  
Vol 24 (2) ◽  
pp. 303-322 ◽  
Author(s):  
Bernard Cosman
Keyword(s):  
The South

Long-term Cyclic Variations of Prominences, Green and Red Coronae over Solar Cycles

2000 ◽  
Vol 179 ◽  
pp. 201-204
Author(s):  
Vojtech Rušin ◽  
Milan Minarovjech ◽  
Milan Rybanský
Keyword(s):  
Emission Lines ◽  
High Latitudes ◽  
Green Line ◽  
Solar Cycles ◽  
The South ◽  
Coronal Emission ◽  
Local Maxima ◽  
The North ◽  
Cyclic Variations

AbstractLong-term cyclic variations in the distribution of prominences and intensities of green (530.3 nm) and red (637.4 nm) coronal emission lines over solar cycles 18–23 are presented. Polar prominence branches will reach the poles at different epochs in cycle 23: the north branch at the beginning in 2002 and the south branch a year later (2003), respectively. The local maxima of intensities in the green line show both poleward- and equatorward-migrating branches. The poleward branches will reach the poles around cycle maxima like prominences, while the equatorward branches show a duration of 18 years and will end in cycle minima (2007). The red corona shows mostly equatorward branches. The possibility that these branches begin to develop at high latitudes in the preceding cycles cannot be excluded.

A scanning electron microscopic study of the veliger larvae of the scallop argopecten purpuratus

1988 ◽  
Vol 46 ◽  
pp. 284-285
Author(s):  
G.C. Bellolio ◽  
K.S. Lohrmann ◽  
E.M. Dupré
Keyword(s):  
Morphological Description ◽  
Electron Microscopic ◽  
Larval Stages ◽  
Scanning Electron Microscopic Study ◽  
The Pacific ◽  
Argopecten Purpuratus ◽  
Veliger Larvae ◽  
20 Nm ◽  
Ethanol Series ◽  
Scanning Electron

Argopecten purpuratus is a scallop distributed in the Pacific coast of Chile and Peru. Although this species is mass cultured in both countries there is no morphological description available of the development of this bivalve except for few characterizations of some larval stages described for culture purposes. In this work veliger larvae (app. 140 pm length) were examined by the scanning electron microscope (SEM) in order to study some aspects of the organogenesis of this species.Veliger larvae were obtained from hatchery cultures, relaxed with a solution of MgCl2 and killed by slow addition of 21 glutaraldehyde (GA) in seawater (SW). They were fixed in 2% GA in calcium free artificial SW (pH 8.3), rinsed 3 times in calcium free SW, and dehydrated in a graded ethanol series. The larvae were critical point dried and mounted on double scotch tape (DST). To permit internal view, some valves were removed by slightly pressing and lifting the tip of a cactus spine wrapped with DST, The samples were coated with 20 nm gold and examined with a JEOL JSM T-300 operated at 15 KV.

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