a water soluble, bronsted acid, 5-sulfosalicylic acid as an efficient organocatalyst was used for the synthesis of physiologically active 2-substituted benzimidazole derivatives from o-phenylenediamine and aromatic aldehydes in ethanol at reflux condition. cost-effectiveness, use of non-hazardous solvents, metal free and commercially available catalyst, single-step, environmentally friendly gre...

Most viruses are capable of fixing up the first few bytes and repair the original program because they have to return the control back to the infected program. This fact is used by a heuristic cleaner to clean the infected file. As the virus knows how to repair the it uses the same virus to repair the infected file. There are some infections where parts of the files are damaged by the virus. Th...

Residue identification in a pharmaceutical manufacturing environment involves; the cleaner, primary ingredients, excipients, decomposition products, and preservatives. This document is intended to help with the cleaner residue identification. Residue detection method selection for cleaners can involve specific methods for specific cleaner ingredients such as; high performance liquid chromatogra...

BACKGROUND AND OBJECTIVES: The sheer volume of electrical and electronic waste (e-waste) has presently been generated in Vietnam, posing a growing concern regarding its impact can have on the environment and human health. Therefore, the need for developing policies and regulations towards the environmentally sound management of e-waste is becoming crucial. Although the municipa...

Thermal lensing in resonant optical interferometers such as those used for gravitational wave detection is a concern due to the negative impact on control signals and instrument sensitivity. In this paper we describe a method for monitoring the thermal state of such interferometers by probing the higher-order spatial mode resonances of the cavities within them. We demonstrate the use of this te...

high levels of weee and limited capacities for disposal and recycling, together with thenecessity to transpose the european legislation into national law have shaped the profile of weee system inromania. in order to improve the functionality of this system it is important to understand the citizens’behaviour towards weee recycling. recent research conducted in different countries suggest that v...

high levels of weee and limited capacities for disposal and recycling, together with thenecessity to transpose the european legislation into national law have shaped the profile of weee system inromania. in order to improve the functionality of this system it is important to understand the citizens’behaviour towards weee recycling. recent research conducted in different countries suggest that v...