An efficient and convenient approach towards the synthesis of nitrogen fused imidazoheterocycles through double C-N bond formation in a single step has been achieved with a good range of substituted phenacyl bromides in the presence of magnetically recoverable Fe3O4 as a green heterogeneous nanocatalyst. The present approach was found to be environmentally benign and econo...

In recent years the amount of unstructured data stored on the Internet and other digital sources has increased significantly. These data contain often valuable, but hardly retrievable information. The term unstructured data refers mainly to data that does not have a data structure. As a result of this, the unstructured data is not easily readable by machines. In this work, we present a simple m...

The Amplatzer duct occluder (ADO) (AGA Medical Corp., Golden Valley, MN) is designed to meet criteria for an optimal transcatheter technique for closure of a patent ductus arteriosus. It was developed as an alternative to surgical closure and other interventional techniques. It is not technically complex, allows controlled deployment, is retrievable and repositionable, and has a low risk of emb...

ed and Indexed in: Aquatic Sciences and Fisheries Abstracts Centre for the Economics and Management of Aquatic Resources (CEMARE), Department of Economics, University of Portsmouth, Locksway Road, Portsmouth PO4 8JF, United Kingdom. Copyright © University of Portsmouth, 1996 All rights reserved. No part of this paper may be reproduced, stored in a retrievable system or transmitted in any form b...

Coronary occlusion is one of the potential complications during transcatheter aortic valve implantation. Second-generation fully retrievable and repositionable devices can theoretically prevent this complication. Figure 1 (A) Delivery system containing the unexpanded Lotus valve through the aortic valve; (B) the Lotus valve partially expanded. A 81-year-old woman with symptomatic aortic stenosi...

Sudoku is a logic-based combinatorial puzzle game which is popular among people of different ages. Due to this popularity, computer softwares are being developed to generate and solve Sudoku puzzles with different levels of difficulty. Several methods and algorithms have been proposed and used in different softwares to efficiently solve Sudoku puzzles. Various search methods such as stochastic ...