the removal of cd2+ and pb2+ ions from wastewater using p-tert-butyl-calix[4] arene was investigated in terms of initial ph, initial concentration, adsorbent dosage, contact time and temperature. the maximum adsorption occurred at the ph value of 6. the adsorbent studied exhibits high efficiency for cd (ii)and pb (ii) adsorption and the equilibrium states could be achieved in 10 min. adsorption...

Some digit-by-digit methods for the evaluation of the elementary functions are described. The methods involve processes that resemble repeated-addition multiplication and repeatedsubtraction division. Consequently, the methods are easy to implement and the resultant execution times are short. Introduction It is customary in computers to build an arithmetic unit which is capable of adding, subtr...

The Meigs’ Syndrome (MS) described in 1937 by Meigs and Cass was characterized by benign ovarian fibroma, ascites and hydrothorax that resolve after the tumor removal. Peritoneal and pleural fluids of the patients originally with MS were transudates [1]. In pseudo-MS similar features are due to other benign or malignant tumors; Pseudo Pseudo-MS (PPMS) occurs in Systemic Lupus Erythematosus (SLE...

Amidst continuing difficulties in justifying the expenditure on e-Government with financial and other returns, we examine whether the delivery of government services online facilitates the setting up of new businesses in a country. Using a panel assembled from three public sources of data, we examine whether delivering more and more government services online reduces the number of procedures th...

Due to the lack of consistent data, direct and robust comparisons of cross-country labour markets have been virtually impossible. This study uses a new panel data series that controls for inconsistencies, thus overcoming this problem. This study estimates gender wage differentials and gender discrimination in the German and United Kingdom labour markets. Panel estimates are used to identify gen...