Search results for "TLE"
showing 10 items of 2417 documents
Gortina. Nuovi dati dagli scavi dell’insediamento di Profitis Ilias
2018
Recent research in the Iron age settlement on the hill of Profitis Ilias (Gortyn) revealed part of a building belonging to the latest phase of the village (VIII-VII cent. B.C.), and perhaps intended to some civic function. Its building process involved the demolition of a part of a thick wall dated in the Protogeometric age, possibly to be identified with the defense wall of the former settlement. The stratigraphy in the building area showed significant evidence for the site occupation after the abandonment of the village.
Impact of crop species on bacterial community structure during anaerobic co-digestion of crops and cow manure
2008
The bacterial communities in three continuously stirred tank reactors co-digesting cow manure with grass silage, oat straw, and sugar beet tops, respectively, were investigated by 16S rRNA gene-based fingerprints and clone libraries. The analyses revealed both clearly distinct and similar phylotypes in the bacterial communities between the reactors. The major groups represented in the three reactors were Clostridia, unclassified Bacteria, and Bacteroidetes. Phylotypes affiliated with Bacilli or Deltaproteobacteria were unique to the sugar beet and straw reactor, respectively. Unclassified Bacteria dominated in sugar beet reactor while in the straw and grass reactor Clostridia was the domina…
Structure of the Cryptosporidium parvum microneme: a metabolically and osmotically labile apicomplexan organelle.
2003
From an EM study of thin sections, the rod-like microneme organelles within conventionally glutaraldehyde fixed Cryptosporidium parvum sporozoites have been shown to undergo a shape change to a more spherical structure when the sporozoites age in vitro for a period of approximately 12 to 24 h. This correlates with the shape change of intact sporozoites, from motile hence viable thin banana-shaped cells to swollen pear-shaped cells, shown by differential interference contrast light microscopy of unstained unfixed and glutaraldehyde-fixed samples, as well as by thin section EM of fixed sporozoites. From negatively stained EM specimens of unfixed and fixed sporozoites the cellular shape change…
Ultrastructure, fractionation and biochemical analysis of Cryptosporidium parvum sporozoites.
1999
Abstract Sporozoites of the apicomplexan parasite Cryptosporidium parvum were subjected to cell disruption and subcellular fractionation using a sucrose density step gradient. With this procedure, highly enriched preparations of the parasite membrane, the micronemes, dense granules and amylopectin granules were produced. No separate fraction containing rhoptries was obtained, however this organelle was found in defined fractions of the gradient, still associated with the apical tip of the sporozoites. Using negative staining, the internal structure of the micronemes was revealed by transmission electron microscopy. Micronemes and dense granules showed characteristic protein compositions by …
Protective Effects of L- and D-Carnosine on R-Crystallin Amyloid Fibril Formation: Implications for Cataract Disease
2009
Mildly denaturing conditions induce bovine ?-crystallin, the major structural lens protein, to self-assemble into fibrillar structures in vitro. The natural dipeptide L-carnosine has been shown to have potential protective and therapeutic significance in many diseases. Carnosine derivatives have been proposed as potent agents for ophthalmic therapies of senile cataracts and diabetic ocular complications. Here we report the inhibitory effect induced by the peptide (L- and D-enantiomeric form) on ?-crystallin fibrillation and the almost complete restoration of the chaperone activity lost after denaturant and/or heat stress. Scanning force microscopy (SFM), thioflavin T, and a turbidimetry ass…
Atmosphere-Induced Effect in Microhardness, Dislocation Mobility and Plasticity of C60and Graphite Crystals
1997
Abstract Formation of hard, brittle and toluene-insoluble near-surface layer (∼0.3 μm) of C60 crystals under atmospheric exposure was observed. Similar atmosphere-induced effect was found for graphite crystals and might also be expected for other molecular solids. Data on ageing kinetics of C60 and graphite crystals are presented. Variation of hardness with indentation depth can be described by the microhardness model for bilayer medium with different mechanical properties. Specific feature of C60 and graphite crystals is that no size effect appears in the intrinsic microhardness and dislocation mobility characteristics in the indentation depth range of 0.6–4μm.
Comparing colonial differences: Baltic literary cultures as agencies of Europe’s internal others
2016
ABSTRACTThe article discusses the Baltic colonial experience in historical and comparative perspective. It sketches the ways in which Baltic societies are best linked to theoretical discussions on postcolonial issues, and whether they might be looked upon in a more global context. The main question posed by the article is in what ways Baltic identity has been determined by processes of foreign settlement, occupation and colonization of the territory of each respective country and whether we can see Baltic societies as potential agencies of Europe’s internal others.
Epistemic governance in local policy debates : The case of entitlement to early childhood education and care in Finland
2019
In Finland, children below school age have enjoyed the right to attend subsidised full-time early childhood education and care (ECEC). However, the attendance rate in Finland is low in comparison to other Nordic countries. Furthermore, the entitlement was restricted to 20 h per week in 2016 unless the child’s parents work or study full-time or unless it is believed that the child will benefit from full-time ECEC. The debates concerning restrictions in ECEC entitlement in three municipal councils serve as the data for this study. By using the framework of epistemic governance, we identify three differing constructions of the ECEC’s societal functions in the municipal policy debates. The simi…
Exploring Beyond the River and Inside the Valleys: Settlement Development and Cultural Landscape of the Araxes River Basin Through Time
2020
Geographical landmarks, especially rivers, have always played an important role in forming or hampering interplay between societies. In some cases, they act as a “communication route” and in some o...
Was the Christian conquest of al-Andalus irreversible?
2012
The consideration of the battle of Las Navas de Tolosa as a turning point in history must necessarily be contemplated within the larger framework of the incapacity shown by Andalusi society to oppose the conquering dynamics manifested by the Iberian feudal aristocracies and monarchies since the conquest of Toledo (1085). This is a crucial matter that cannot be seen in isolation from the wider context of the expansion of Latin Christendom. In this regard, the present article suggests a comparison between the disparate fortunes of the Iberian kingdoms and the Latin principalities in the East through the critical assessment of three factors: (i) dissemination of, and role played by the ideolog…