GROUNDWATER QUALITY OF THE AG. PARASKEVI/TEMPI VALLEY KARSTIC SPRINGS - APPLICATION OF A TRACING TEST FOR RESEARCH OF THE MICROBIAL POLLUTIO (KATO OLYMPOS/NE THESSALY)

The study of the Kato Olympos karst system, based on the implementation of tracer tests and hydrochemical analyses, is aimed at the investigation of surface-groundwater interaction, the delineation of the catchment area and the detection of the surface microbial source contamination of the Tempi karst springs. The study area is formed by intensively karstified carbonate rocks, metamorphic formations, Neogene sediments and Quaternary deposits. The significant karst aquifer discharges through karst springs in Tempi valley and in Pinios riverbed. The karst springs present important seasonal fluctuations in discharge rate, moderate mineralization with TDS between 562 to 630 mg/l and they belong to Ca-HCO3 water type. The inorganic pollution indicators, such as Na+, K+, Cl- , NO3 - , NH4 +, PO4 3 , show low concentrations and do not reveal any surface influences. On the other hand, the presence of microbial parameters in karst springs proclaims the high rate of microbial contamination of karst aquifer. Tracer tests reveal hydraulic connection between the surface waters of Xirorema – Rapsani basin and the karst aquifer. The high values of groundwater flow velocity upwards of 200 m/h, show the good karstification rate of the carbonate formations and the cavy structure dominated in the study area, as well as the low self purification capability of the karst aquifer

COMMUNICATION AND PUBLICITY: THE LAST HOPE FOR ADDRESSING INTERNAL VIOLENCE AGAINST REFUGEE AND IMMIGRANT WOMEN'S STAYING IN CAMPS

With no doubt, all refugees and immigrants staying in camps are suffering for many reasons. Every individual who lives in camps under poverty and stressful situation everywhere on earth is suffering. This is something that happens in Greek camps as well. Among individuals who stay at camps women experience the greatest danger. They are at great risk as they may be victims of rapes, as they stay for hours alone at containers looking after the "housekeeping" and children nurturing, as they live in fear and danger for many reasons. Within this framework, communication and publicity of hazard situation that exists in the camps is considered the last hope for addressing internal violence against refugee and immigrant women’s staying there. Communication and publicity of the particular problem may wake up those who are responsible for this situation and the defense of human rights. They have to do all necessary for the sooner and best resolution of this mess.  Article visualizations

CONTRIBUTION TO HYDRAULIC CHARACTERISTICS OF PLIO-PLEISTOCENE DEPOSITS OF THRIASSION PLAIN OF ATTICA

Η γεωλογική δομή της ευρύτερης περιοχής του Θριασίου Πεδίου είναι σε γενικές γραμμές πολύπλοκη και έχει επηρεασθεί σε διάφορες περιόδους από σύνθετες τεκτονικές δράσεις και τελευταία από την νεοτεκτονική, η οποία έχει δημιουργήσει πολύ σύνθετες δομές κεράτων και βυθισμάτων. Η γεωλογική και τεκτονική δομή έχει επηρεάσει τις υδρογεωλογικές συνθήκες και την κίνηση του υπόγειου νερού. Τα υδραυλικά χαρακτηριστικά των πλειολειστοκαινικών ιζημάτων διαφέρουν από θέση νσε θέση. Σε αυτό το άρθρο παρουσιάζονται αποτελέσματα αντλητικών δοκιμασιών που πραγματοποιήθηκαν στις πλειο πλειστοκαινικές αποθέσεις και προσδιορίσθηκαν τα υδραυλικά χαρακτηριστικά τους. Οι αντλήσεις πραγματοποιήθηκαν σε 8 πηγάδια και εφαρμόσθηκαν οι μέθοδοι Cooper-Jacob, Theis, Papadopoulos-Cooper, Neuman και η μέθοδος της Επαναφοράς. Οι αντλήσεις αυτές ανέδειξαν την μέθοδο της Επαναφοράς ως την πλέον αξιόπιστη. Η μεταβιβαστικότητα T κυμαίνεται μεταξύ 18-279.1 m2/d, η αποθηκευτικότητα S μεταξύ 2.5*10-3-3*10-2 και η υδραυλική αγωγιμότητα Κ κυμαίνεται μεταξύ 16-360 m3/d/m. Η έρευνα αυτή συμβάλλει, ουσιαστικά, στην προσέγγιση των υδρογεωλογικών συνθηκών που επικρατούν στο Θριάσιο Πεδίο.The geological structure of Thriassion Plain is generally complex and has been affected at different times by many tectonic activities. The last ones are the neotectonic, which caused horsts and grabens structures. Geologic and tectonic structures have influenced the hydrogeological conditions and the groundwater flow. Hydraulic characteristics of Plio-Pleistocene deposits differ throughout their extent. In this study, pumping tests in Plio-Pleistocene deposits are represented and the hydraulic characteristics transmissivity T, storativity S and hydraulic conductivity K are assigned. Pumping tests, in 8 totally wells, were conducted in the dry period. Methods as Cooper-Jacob’s, Theis’s, Papadopoulos Cooper’s and Neuman’s and last the Recovery method, are used to assign the hydraulic characteristics. These tests highlighted the Recovery method as the most reliable. Transmissivity T: 18-279.1 m2/d, storativity S: 2.5*10-3 3*10-2and hydraulic conductivity K: 0.4-25.1 m/d. Specific capacity is also determined ranging between 16-360 m3/d/m. This study contributes, essentially, in the approach of hydrogeological conditions of Thriassion Plain

A tripeptide-like prolinamide-thiourea as an aldol reaction catalyst

A tripeptide-like prolinamide-thiourea catalyst with (S)-proline, (1S,2S)-diphenylethylenediamine and (S)-di-tert-butyl aspartate as building blocks provides the products of the reaction between ketones and aromatic aldehydes in high to quantitative yields and high stereoselectivities (up to 99 : 1 dr and 99% ee). Both the chiral centers of the diamine unit are essential, while the thiourea hydrogen originating from the amine and the amide hydrogen play a predominant role for the catalyst efficiency

On the Morgan-Shalen compactification of the SL(2,C) character varieties of surface groups

http://arxiv.org/PS_cache/math/pdf/9810/9810034v1.pdfA gauge theoretic description of the Morgan-Shalen compactification of the SL(2, C) character variety of the fundamental group of a hyperbolic surface is given in terms of a natural compactification of the moduli space of Higgs bundles via the Hitchin map