National Documentation Centre - EKT journals
Not a member yet
23927 research outputs found
Sort by
The Middle Byzantine wall-paintings in the diaconicon of the Dormition church in Kalambaka
No full textΣτη μελέτη εξετάζονται η εικονογραφία και η τεχνοτροπία του δεύτερου στρώματος των τοιχογραφιών στο διακονικό της βασιλικής της Κοίμησης της Θεοτόκου Καλαμπάκας (αρχαίοι Σταγοί). Τα συγγενέστερα παράλληλα εντοπίζονται στην Αγία Σοφία Αχρίδας (π. 1052-1056), στην αρχιεπισκοπή της οποίας υπαγόταν η μητρόπολη Σταγών εκείνη την εποχή. Στις τοιχογραφίες της Καλαμπάκας διαπιστώνονται κάποια νέα καλλιτεχνικά χαρακτηριστικά που εμφανίζονται στη μητροπολιτική τέχνη του τρίτου τετάρτου του 11ου αιώνα, περίοδο στην οποία αποδίδουμε τις τοιχογραφίες του διακονικούThe paper examines the iconography and style of the second layer of the wall-paintings in the diaconicon of the cathedral of Kalambaka (ancient Stagoi). The closest parallels are to be found in Saint Sophia of Ohrid (ca. 1052-1056), the archbishopric to which Stagoi belonged at that time. The Kalambaka wall-paintings also display certain new artistic characteristics that made their appearance in metropolitan art in the third quarter of the 11th century, which allows to date them to that period
Insecticidal effects of aqueous extracts from Artemisia herba-alba Asso and Rosmarinus officinalis L against Drosophila melanogaster (Diptera: Drosophilidae)
Get PDFSynthetic insecticides are frequently used to control or prevent agricultural insect pests. However, their excessive use is generally associated with environmental pollution, loss of biodiversity, health risks to humans, and adverse effects on various living beings. Considering the harmful consequences of chemical pesticides on the environment and public health, this highlights the necessity for target-specific, biodegradable, and environmentally friendly products, such as those extracted from plants. Hence, in the present study, the bio-efficacy of two botanical plant extracts obtained from the leaves of Artemisia herba-alba Asso and Rosmarinus officinalis L. by the maceration method was investigated on Drosophila melanogaster Meigen (Diptera: Drosophilidae) a widely used biological model for assessing insecticidal effects. The aqueous extracts were applied topically through different doses varying from 1 to 20 µg per larva for A. herba-alba, and 1 to 35 μg per larva for R. officinalis, on the third instar larvae, and the inhibition doses of adult emergence (ID25 and ID50) were determined. Our results indicate that the aqueous extracts of A. herba-alba showed very promising insecticide activity against D. melanogaster compared to R. officinalis extract. Topical toxicity recorded ID25 and ID50 values of 1.35 and 3.17 µg per larva for A. herba-alba, followed by 2.03 and 6.42 µg per larva for R. officinalis, respectively. These findings reflect clearly that the aqueous plant extracts of A. herba-alba and R. officinalis have great potential to develop new botanical insecticides as safe alternatives for insect-pest control
Maternal instincts of extensively managed indigenous village chickens
Get PDFIndigenous village chickens (IVCs) are self-reliant, and they have accumulated traits that assure their survival as a species. The reproductive characteristics and behavioral traits are mainly ascribed to maternal instincts. This study reports the maternal instincts of IVCs gathered using face-to-face interviews with small-scale farmers. Indeed, local hens are excellent mothers. Annually, hens became broody on average four times, and in each cycle, on average, they stayed broody (interrupted laying) for 10 days. In the relatively cold highland region, hens tended to be broody for more days compared to the lowland region (t = 2.563, df = 117, p = 0.012, 95% CI: 0.4505, 3.5128). Squawking and the deterrence of cocks were the most frequently reported signs that have been shown by broody hens. Extended broody is usually discouraged by small-scale farmers by relocating the hen to neighborhoods located out of the reach of the broody hen, hanging it down, and disturbing the hen while it attempts to nest. The dry season was reportedly more suitable for the incubation of eggs and hatching of chicks, for example, the reported average hatchability rate during the dry season was 84%, whereas it was 69% in the wet season. To enhance the rate of hatchability and survival of chicks, it is advisable to match brooding practice with the ideal season and select the right type of hen. Hens with appreciable maternal instincts need to be retained in the family flocks to enhance their reproductive capacity. 
Genetic variability of alpha-casein, beta-casein, and kappa-casein genes in Holstein-Friesian, Simmental and Brown Swiss cattle
Get PDFThis study aims to determine the genotypes and allele frequencies of polymorphisms of bovine αS1-casein (CSN1S1), αS2-casein (CSN1S2), β-casein (CSN2) and κ-casein (CSN3) genes in Holstein-Friesian, Simmental, and Brown Swiss breeds. DNA was isolated from milk samples. It was performed for amplification of gene regions according to multiple PCR protocols determined by optimization. Sanger sequencing was performed to genotyping PCR products. CSN1S1 gene and CSN1S2 gene in three cattle breeds were observed to be monomorphic. The CSN2 gene was observed three different genotypes in Holstein-Friesian, two different genotypes in Brown Swiss. But Simmental breed was observed monomorphic. For the CSN3 gene was observed three different genotypes in Holstein-Friesian and Brown Swiss, two different genotypes in Simmental. Also, the sequence region in the bovine CSN2 gene exon 7 in this study was performed alignment (BLAST) in NCBI, Ensemble and DDBJ. The C→G transition in consequence of alignment (BLAST) reported in this study was encountered in no previous study. Therefore, this SNP is thought to be detected for the first time. However, it was concluded that it would be appropriate to carry out more studies on this new SNP point
Detection of highly potent Stx2a-encoding gene in pig fecal DNA in Serbia: Could commercial pig farms in Serbia act as source of human STEC infections?
Get PDFShiga toxin-producing Escherichia coli (STEC) strains are major zoonotic food-borne pathogens of public health importance. Although cattle are recognized as a major reservoir of STEC, these strains have been frequently isolated from the intestinal content of swine, therefore swine shed STEC in the feces. Shiga toxin genes were subtyped to assess public health implications of STEC. By subtyping the stx2 gene subtypes in swine we established the presence of the stx2e gene in 9 out of 82 stx2 positive samples. Furthermore, the zoonotically significant stx2a gene in 3 samples, which, although with a low prevalence, is of great importance for public health, enabling completion of the epidemiological picture of STEC in Serbia
Définition, mise en image et médiatisation des priorités identitaires lors du processus visuel de la commémoration
Get PDFLa question de l’identité nationale est inhérente à la question de la commémoration des faits historiques, ce processus dédié à rappeler, mentionner, évoquer, voire célébrer un événement jugé essentiel dans le parcours d’une nation
André Malraux à Athènes en 1959 : l’inauguration du spectacle « Son et Lumières » et la réaction de la presse grecque
Get PDFEn 1959, André Malraux, alors ministre français des Affaires Culturelles, se rend à Athènes pour inaugurer le spectacle "Son et Lumière" au Parthénon. Cet événement, destiné à renforcer les liens culturels franco-grecs, suscite des réactions contrastées dans la presse grecque, entre admiration pour Malraux et critiques acerbes contre la commercialisation de l'Acropole
« […] dans quelque cour du Gandhāra où les aigles venaient du Pamir » . Malraux et la sculpture gréco-bouddhique
Get PDFL'article examine la relation complexe de Malraux avec l'art du Gandhāra, qu'il découvre lors de son périple en Asie centrale en 1930. Loin de se contenter d'une simple fascination esthétique, Malraux voit dans cet art une métamorphose des formes grecques, transformées par l'influence bouddhique. Il y perçoit un espace de rencontre entre deux mondes, celui de la Grèce hellénistique et de l'Inde bouddhique, où l'art devient le reflet d'une libération spirituelle et d'un dialogue entre les cultures
Ἐς Νικόπολιν, οὗ μ’ ἐθέσπισεν
Get PDF
H Αμερικανική Σχολή Κλασικών Σπουδών στην Αθήνα (The American School of Classical Studies at Athens, ASCSA) είναι μία από τις 17 ξένες αρχαιολογικές σχολές που λειτουργούν στην Ελλάδα, ιδρύθηκε το 1881. Η Σχολή επί σειρά δεκαετιών έχει πραγματοποιήσει ανασκαφικές έρευνες σε σημαντικούς αρχαιολογικούς χώρους της Ελλάδας, οι δημοσιεύσεις των οποίων παουσιάζονται σε έγκυρα διεθνή επιστημονικά περιοδικά, μεταξύ των οποίων και το περιοδικό της Σχολής Hesperia, the Journal of the American School of Classical Studies at Athens σε σειρές μονογραφιών, πρακτικά συνεδρίων, κ.ά. Το Φθινόπωρο του 1978, το πρόγραμμα των εκπαιδευτικών ταξιδιών περιλάμβανε και την Ήπειρο. Μεταξύ άλλων αρχαολογικών χώρων επισκεφθήκαμε το Νεκρομαντείο του Αχέροντα και την αρχαία Κασσώπη και τη Νικόπολη όπου άκουσα για πρώτη φορά για τον σπουδαίο Ηπειρώτη Αρχαιολόγο Σωτήρη Δάκαρη. Οι περισσότεροι από τους συμφοιτητές μου εκείνης της χρονιάς, είχαν αργότερα μια λαμπρή καριέρα όπως η Sarah Morris, καθηγήτρια στο Πανεπιστήμιο του Los Angeles UCLA (Steinmetz Professor of Classical Archaeology and Material Culture Distinguished Professor, Department of Classics), τον VictorDavis Hanson, καθηγητή Κλασσικών Σπουδών στο Πανεπιστήμιο California State University, Fresno, ο William Murray καθηγητής Αρχαίας Ιστορίας στο Πανεπιστήμιο της South Florida, η Deborah BrownKazazis, ο Barry Strauss, καθηγητής Ιστορίας και Κλασικών Σπουδών.
 
Κατ' οίκον έρευνα στην Βενετοκρατούμενη Πρέβεζα του 1787
Get PDFΤο άρθρο αποτελεί ανακοίνωση του επικ. καθηγητή Ιστορίας του Παν/μίου Θεσσαλονίκης Ιωάννη Δ. Ψαρά, στο Α' Δειθνές Συμπόσιο για την ιστορία της Πρέβεζας (Πρέβεζα 22-24 Σεπτεμβρίου 1989). Ο συγγραφέας αναφέρεται σε έγγραφο του 1787 από τη Βενετοκρατούμενη Πρέβεζα και διασώζεται στο Κρατικό Αρχείο της Βενετίας