277 research outputs found
WATER RESOURCES IN THE WIDER AREA OF THE APOSELEMIS BASIN, CRETE ISLAND, GREECE
Η γνώση του υδρολογικού ισοζυγίου μιας λεκάνης αποτελεί απαραίτητη προϋπόθεση για να εκτιμηθεί η ασφαλής απόδοση των υδροφόρων συστημάτων ώστε να εξασφαλι σθεί η ορθολογική και βιώσιμη διαχείριση τους. Προκειμένου να αντιμετωπιστεί η διαταραχή της ισορροπίας του υδατικού ισοζυγίου στην υδρογεωλογική λεκάνη του Αποσελέμη αλλά και στον ευρύτερο χώρο του όρους Δίκτη είναι απαραίτητη η εκτίμη ση του υδατικού ισοζυγίου των επιμέρους λεκανών απορροής δηλαδή της λεκάνης του Αποσελέμη, των οροπεδίων Λασιθίου και Καθαρού καθώς και της υπόλοιπης επιφάνειας απορροής του όρους Δίκτη. Προς τούτο χρησιμοποιήθηκαν οι καταγραφές της απορροής του Αποσελέμη στη θέση Ποταμιές και οι μετρήσεις βροχής σε επτά βροχομετρικούς σταθμούς εντός ή πλησίον της λεκάνης απορροής του Αποσελέμη κατά την περίοδο 1967-2003. Τα όρια των περιοχών και οι μορφολογικές παράμετροι καθορί στηκαν με τη χρήση GIS, με βάση το ψηφιακό μοντέλο ανάγλυφου (DEM). Η πραγμα τική εξατμισοδιαπνοή σε όλη τη περιοχή υπολογίστηκε με τη μέθοδο ThornthwaiteMather. Διαπιστώθηκε υψηλός βαθμός συσχέτισης της απορροής του Αποσελέμη με τη βροχόπτωση στην ευρύτερη περιοχή πέρα από τα συμβατικά όρια της λεκάνης απορ ροής του. Σημαντικό ποσοστό της ετήσιας βροχόπτωσης και απορροής στην περιοχή τροφοδοτεί τόσο τα καρστικά υδροφόρα συστήματα κατάντη όσο και την απορροή του Αποσελέμη. Οι καρστικοί υδροφορίες εκφορτίζονται μερικώς από μεγάλες παράκτιες και υποθαλάσσιες υφάλμυρες πηγές, καθώς και από μικρότερες πηγές γλυκού νερού στην ενδοχώρα. Επιβεβαιώθηκε τέλος με ιχνηθετήσεις που εκτέλεσε το ΙΓΜΕ η υ δραυλική επικοινωνία του οροπεδίου Λασιθίου και των κατάντη υδροφορέων.The estimation of hydrologie balance is useful in order to assess the safe yield of the aquifer systems and therefore to establish their rational exploitation and sustainable management. Over-abstractions of groundwater in Aposelemis basin resulted in a severe disequilibrium of its water balance. In order to overcome this disequilibrium we studied the hydrological balance in the wider area ofDikti mountain which comprises the drainage basins of Aposelemis river, ofLasithi and Katharo plateaus and of the rest of the drainage area of Dikti. The data used are the monthly values of Aposelemis runoff in the gauge station at Potamies and rainfall data for the period 1967-2003 from seven stations located within or in the close vicinity of the drainage basin of Aposelemis. Using ArcView GIS, the hydrological basin of Aposelemis river and the drainage area ofDikti were delineated, based on the digital elevation model (DEM). The actual évapotranspiration was estimated by the Thornthwaite method. A high inter-relationship exists between the flow of the Aposelemis river and rainfall outside the conventional boundaries of the Aposelemis basin. A significant portion of the annual rainfall, in that wider area is not only recharging the karst systems downstream but also contributing to the flow of Aposelemis river. Karst aquifer systems are partially drained by large coastal and submarine brackish springs and by inland freshwater springs. Finally, tracer studies carried out by IGME confirmed the hydraulic connection between Lasithiplateau and downstream aquifer systems
Aspects and challenges of mashup creator design
With the advent of Web 2.0, an increasing number of web sites has started
offering their data over the web in standard formats and exposed their
functionality as APIs. A new type of applications has taken advantage of the
new data and services available by mixing them, in order to generate new
applications fast and efficiently, getting its name from its own architectural
style: mashups. A set of applications that aims to help a user create, deploy
and manage his mashups has also emerged, using various approaches. In this
paper we discuss the key factors that should be taken into consideration when
designing a mashup creator, along with the most important challenges that offer
a field for research.Comment: 5 pages, 14th Panhellenic Conference on Informatics (PCI2010),
September 10-12 2010, Tripoli, Greec
Ascending septic pylephlebitis with liver abscess development due to appendicitis in an 11-months old infant
The development of septic ascending pylephlebitis secondary to gangrenous appendicitis resulting in the development of liver abscess is a rare complication especially in infancy. In this study we refer to an infant 11 months old with the above clinical entity treated successfully in our clinic. Due to this rare occasion, we reviewed recent literature, aiming at the consolidation of clinical and prognostic parameters
Mechanisms, Risk Factors, and Management of Acquired Long QT Syndrome: A Comprehensive Review
Long QT syndrome is characterized by prolongation of the corrected QT (QTc) interval on the surface electrocardiogram and is associated with precipitation of torsade de pointes (TdP), a polymorphic ventricular tachycardia that may cause sudden death. Acquired long QT syndrome describes pathologic excessive prolongation of the QT interval, upon exposure to an environmental stressor, with reversion back to normal following removal of the stressor. The most common environmental stressor in acquired long QT syndrome is drug therapy. Acquired long QT syndrome is an important issue for clinicians and a significant public health problem concerning the large number of drugs with this adverse effect with a potentially fatal outcome, the large number of patients exposed to these drugs, and our inability to predict the risk for a given individual. In this paper, we focus on mechanisms underlying QT prolongation, risk factors for torsades de pointes and describe the short- and long-term treatment of acquired long QT syndrome
Anxiety and depression symptoms in family members of icu patients
Objective: This study investigated symptoms of anxiety and depression in relatives of patients admitted in the Intensive Care Unit and determined whether these symptoms were associated to the seriousness of the patients’ condition.Metodology: A total of 102 patients’ relatives were surveyedduring the study. They were given a self-report questionnaire in order to assess demographic data, anxiety and depression symptoms. The symptoms of anxiety and depression were evaluated with the Hospital Anxiety and Depression Scale (hads). Patient’s condition was evaluated with a.p.a.ch.e ii Score.Results: More than 60% of patients’ relatives presented severe symptoms of anxiety and depression. No relation was found between symptoms of anxiety and depression of the relatives of patients and patients’ condition of health. On thecontrary, these feelings used to exist regardless of the seriousness of patient’s condition.Conclusions: The assessment of these patients is recommended in order serious problems of anxietyand depression to be prevented.ResumenObjetivo: El presente estudio se propuso investigar los síntomas de ansiedad y depresión en familiares de pacientes que fueron admitidos en la Unidad de Cuidados Intensivos y se determinó si estos síntomas se asociaron con la gravedad de la condición del paciente.Metodología: Durante este estudio se encuestó un total de 102 familiares de pacientes, a quienes se les solicitó diligenciar un cuestionario auto-administrado para estimar aspectos sociodemográficos y síntomas de ansiedad y depresión. Los síntomas de ansiedad y depresión fueron evaluados con la Hospital Anxiety and Depression Scale (HADS). La condición del paciente fue evaluada con el A.P.A.CH.E II Score.Resultados: Más del 60% de los familiares encuestados presentaron síntomas severos de ansiedad y depresión. No se encontró relación entre los síntomas de ansiedad y depresión de los familiares de los pacientes y el estado de salud de éstos. Por el contrario, aquellas sensaciones solían darse con independencia de la gravedad de la condición del paciente.Conclusiones: Se recomienda la evaluación de estos pacientes para evitar problemas serios de ansiedad y depresión.ResumoObjetivo: O presente estudo pesquisou os sintomas de ansiedade e depressão em familiares de pacientes que foram admitidos na Unidade de Terapia Intensiva e se determinou se esses sintomas se associaram com a gravidade da condição do paciente.Metodologia: Durante este estudo se inquiriu um total de 102 familiares de pacientes, a quem se solicitou diligenciar um questionário auto-administrado, para estimar aspectos sociodemográficos e sintomas de ansiedade e depressão. Os dados sobre sintomas de ansiedade e depressão foram processados usando a Hospital Anxiety and Depression Scale (HADS). A condição do paciente foi avaliada com o A.P.A.CH.E II Score.Resultados: Mais de 60% dos familiares questionados apresentaram sintomas severos de ansiedade e depressão. Não se encontrou relação entre os sintomas de ansiedade e depressão dos familiares dos pacientes e o estado de saúde deles. Pelo contrário, essas sensações com frequência se apresentavam com independência da gravidade da condição do paciente.Conclusões: Recomenda-se a avaliação destes pacientes para evitar problemas sérios de ansiedade e depressão
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