Author: Zeolife.gr

Dr. Georgian Melinte, Dr. Veselina Georgieva, Dr. Marie-Anne Springuel-Huet, Dr. Andreï Nossov, Prof. Ovidiu Ersen, Dr. Flavien Guenneau, Prof. Antoine Gedeon, Dr. Ana Palčić, Dr. Krassimir N. Bozhilov, Dr. Cuong Pham-Huu, Prof. Shilun Qiu, Dr. Svetlana Mintova, Dr. Valentin Valtchev First published: 27 October 2015Full publication history DOI: 10.1002/chem.201501919View/save citation Abstract The principle aspects and constraints of the dynamics and kinetics of zeolite nucleation in hydrogel systems are analyzed on the basis of a model Na-rich aluminosilicate system. A detailed time-series EMT-type zeolite crystallization study in the model hydrogel system was performed to elucidate the topological and temporal aspects of zeolite nucleation. A comprehensive set of analytical tools and methods was employed to analyze ... Διαβάστε περισσότερα

South Africa has large coal reserves. It mainly burns coal to produce electricity at 13 existing coal-burning power plants, situated mainly in Mpumalanga, a province in the country’s east. In South Africa, coal power generation results in at least 36 million tonnes of solid waste residue called fly ash being produced annually. That’s the equivalent of six dumps each the size of the Pyramid of Giza. Fly ash is a problem anywhere in the world where coal is burnt, but it is particularly so in South Africa because its low-grade coal has up to 40% inorganic residue that turns into ash on combustion. Fly ash is ... Διαβάστε περισσότερα

Η δυνατότητα εφαρμογής του φυσικού ζεόλιθου στην επεξεργασία των απόνερων (The potential application of natural zeolite for greywater treatment) Nurul Widiastutia*, Hongwei Wua,b, Ming Angb, Dong-ke Zhanga aCentre for Fuels and Energy and bDepartment of Chemical Engineering, Curtin University of Technology, GPO Box U1987, WA 6845, Australia Tel. +61 (8) 9266 1139; Fax +61 (8) 9266 1138; email: widiasn@optusnet.com.au Abstract Natural zeolites are good potential material for water and wastewater treatment. It is due to the advantages of low cost, ion-exchange and adsorption capability of the natural zeolites. It can also be modified and regenerated. This paper thus looks at ... Διαβάστε περισσότερα

Φυσικοί ζεόλιθοι στην επεξεργασία του πόσιμου νερού (Natural zeolites in the water treatment process) D. BARLOKOVÁ ABSTRACT In many cases it is necessary to treat water intended for human consumption in order to meet the requirements under the Regulation of the Government of the Slovak Republic No. 354/2006 defining the requirements for water intended for human consumption and monitoring the quality of drinking water. When searching for appropriate water treatment technologies emphasis is placed on the development of new, more efficient and cost-effective technologies and materials. The objective of the study was to compare the removal of dissolved iron and ... Διαβάστε περισσότερα

Mostafa Ragab Abd El Wahab, Moaa Korany Seliem, Essam Abd El Rahman Mohamed, Ali Quarny seliem, Mohamed Gad Shahien Scanning electron micrographs of natural and synthetic zeolites A. ZN (a), ZH (b) and ZF (c). ZN is characterized by the presence of prismatic crystals of phillipsite-K (3a). (ZH) shows particles with irregular morphology associated with well-developed crystals (3b). (ZF) shows well developed cubic crystals with sharp edges and smooth surfaces (3c) Abstract In this study, we prepared hydrated and dehydrated Na-zeolites under different conditions using sodium hydroxide (NaOH) and Egyptian kaolin. The synthetic zeolites were characterized by XRD, SEM, specific ... Διαβάστε περισσότερα

(A) Normal stomach lining of volunteer after first endoscopic evaluation; (B) endoscopic image taken after the study period. Wilna Potgieter, Caroline Selma Samuels, and Jacques Renè Snyman Department of Pharmacology, School of Medicine, Faculty of Health Sciences, University of Pretoria, Pretoria, Gauteng, South Africa Correspondence: Jacques Renè Snyman, Department of Pharmacology, School of Medicine, Faculty of Health Sciences, University of Pretoria, PO Box 167, Cornwall Hill Estate, Irene, Pretoria, 0178, South Africa, Tel +27 12 673 8600, Email az.oc.vamred@seuqcaj Copyright © 2014 Potgieter et al. This work is published by Dove Medical Press Limited, and licensed under Creative Commons Attribution ... Διαβάστε περισσότερα

Mohana Devi Subramaniam and In Ho Kim Journal of Animal Science and Biotechnology20156:38 DOI: 10.1186/s40104-015-0037-9 ©  Subramaniam and Kim. 2015 Abstract Clays are crystalline, hydrated aluminosilicate molecules composed of alkali and alkaline earth cations along with small amounts of various other elements. The best-known are montmorillonite, smectite, illite, kaolinite, biotite and clinoptilolite. The molecules in these clays are arranged in three-dimensional structures creating internal voids and channels capable of trapping a wide variety of molecules. As a result of this structure, clay minerals are regarded as a simple and effective tool for the prevention of the negative effects of many toxic compounds. Dietary supplementation with clays has been shown ... Διαβάστε περισσότερα

Carmen Laurino and Beniamino Palmieri University of Modena and Reggio Emilia, Modena (Italy). Abstract Introduction: zeolites (clinoptilolites) are a family of alluminosilicates and cations clustered to form macro aggregates by small individual cavities. In the medical area they are involved in detoxification mechanisms capturing ions and molecules into their holes. Actually, we classify about 140 types of natural and 150 synthetic zeolites, for specific and selective use. Clinoptilolite is a natural zeolite and it is the most widespread compound in the medical market. Objective: this review analyzes the main fields of zeolite utilization. Methods: we searched Pubmed/Medline using the terms ... Διαβάστε περισσότερα

ΑΠΟΣΠΑΣΜΑ Από το πρακτικό της 15ης/2015 συνεδρίασης του Δημοτικού Συμβουλίου. Θέμα 2ο : Έγκριση υποβολής πρότασης στο Πρόγραμμα LIFE+ Ο Πρόεδρος εισηγούμενος το 2ο θέμα της ημερήσιας διάταξης έδωσε τον λόγο στον Δήμαρχο κ. Δαμουλάκη Γεράσιμο. Ο Δήμαρχος είπε : Η Ευρωπαϊκή Επιτροπή δημοσίευσε την πρόσκληση υποβολής προτάσεων για το 2015 στο πλαίσιο του προγράμματος LIFE για τη χρηματοδότηση έργων δράσης για το κλίμα και το περιβάλλον. Σε προηγούμενη συνεδρίαση του Δ.Σ. πήραμε απόφαση να υποβάλλει ο Δήμος μας πρόταση για το έργο «Ολοκληρωμένη διαχείριση πλαστικών αποβλήτων σε νησιωτικές και παράκτιες περιοχές». Συμμετέχοντας στο πρόγραμμα LIFE μπορούμε να έχουμε σημαντικά ... Διαβάστε περισσότερα

Γεωπονικό Πανεπιστήμιο Αθηνών Τμήμα Γεωπονικής Βιοτεχνολογίας Τομέας Γενετικής Εργαστήριο Γενετικής Διατριβή Μεταπτυχιακού Διπλώματος Ειδίκευσης Γενετική Δομή και Διαφοροποίηση Φυσικών Πληθυσμών του Δάκου της Ελιάς, Bactrocera oleae. Πρόγραμμα Μεταπτυχιακών Σπουδών «Βιοτεχνολογία και Εφαρμογές στη Γεωπονία» Βασιλική Ανδρουτσοπούλου, Αθήνα, Νοέμβριος 2011 Περίληψη Στην παρούσα μελέτη αναλύθηκαν με τη μέθοδο της ηλεκτροφόρησης επί πηκτώματος αμύλου φυσικοί πληθυσμοί του εντόμου δάκος της ελιάς, Bactrocera oleae, με σκοπό την ανίχνευση του πολυμορφισμού σε τέσσερα ένζυμα, που κωδικοποιούνται από τέσσερα αντίστοιχα γονίδια, με ιδιαίτερη σημασία και ενδιαφέρον για τη γενετική, μορφολογία και φυσιολογία του δάκου. Τα αποτελέσματα της μελέτης θα μπορούσαν να αποβούν χρήσιμα: α) στην κατανόηση ... Διαβάστε περισσότερα

M. Koukidou1*†, A. Klinakis1*†‡, C. Reboulakis§, L. Zagoraiou*†¶, N. Tavernarakis*, I. Livadaras*, A. Economopoulos§ and C. Savakis*† *Institute of Molecular Biology and Biotechnology, Foundation for Research and Technology, Heraklion, Crete, Greece; †Medical School and §Department of Biology, University of Crete, Heraklion, Greece Abstract The olive fruit fly (olive fly) Bactrocera oleae (Dacus), recently introduced in North America, is the most destructive pest of olives worldwide. The lack of an efficient gene transfer technology for olive fly has hampered molecular analysis, as well as development of genetic techniques for its control. We have developed a Minos-based transposon vector carrying a self- ... Διαβάστε περισσότερα

Ward Chesworth, Peter Van Straaten, Peter Smith, Steven Sadura Department of Land Resource Science, University of Guelph, Guelph, Ont. N1G 2W1 Canada Accepted 11 February 1987, Available online 1 April 2003 Abstract The various forms of apatite release Ca+2 and P-bearing anions into solution. The generally low solubility of these phases, however, has been a drawback to the use of apatite as a direct source of nutrient P in agriculture. Apatite has for the most part been used as a raw material for the production of the more soluble phases used in conventional fertilizers. This necessitates industrial processing by such techniques ... Διαβάστε περισσότερα