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Soil stabilization has become a major issue in construction engineering and the researches regarding the effectiveness of using natural wastes are rapidly increasing. The use of natural fibers to reinforce soil is an old and ancient idea. Consequently, randomly distributed fiber reinforced soils have recently attracted increasing attention in geotechnical engineering. The main aim of this paper, therefore, is to review the, benefits, properties and applications of coir fiber in soil reinforcement through reference to published scientific data.

Engineers often face the problem of constructing facilities on or with soils, which do not posses sufficient strength to support the loads imposed upon them either during construction or during the service life of the structure. Vast areas of India consist of Black Cotton Soil which has high clay content, low strength and minimal bearing capacity. The poor engineering performance of such soils has forced Engineers device cost effective and ecofriendly methods for improving the engineering properties of poor soils. As the conventional soil stabilizers like gravel, sand, etc. are depleting and becoming expensive day by day at a very rapid pace, it becomes necessary to look towards for alternative ecofriendly stabilizers as their substitute. Recently many Bio-enzymes have emerged as cost effective stabilizers for soil stabilization. One such bio-enzyme, Terrazyme, has been used in the present work to study its effect on the Unconfined Compressive strength of the Black Cotton soil. It has been found that Terrazyme treated Black Cotton soil shows significant increase in Unconfined Compressive strength with longer curing period.

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IPv6 is the successor internet protocol which will eventually replace IPv4. These two protocols are not compatible with each other and it will take time to migrate towards IPv6, until then both the protocols need to coexist for a long time. The main overhead involved with both the protocols is header length of 20 bytes in case of IPv4 and of 40 bytes in case of IPv6. This overhead will affect the network performance specially over tunneling mechanism where one header is encapsulated inside another. Tunneling is widely deployed over the network for various purposes like network security, mobility and transition mechanism. Header compression can be applied to compress the excess protocol headers to improve the performance of network. In this paper we want to use header compression in context of 6 to 4 tunneling transition. Using header compression over 6 to 4 tunnels would result in better response times reduced packet size and reduced packet losses. We want to simulate this algorithm using EXata Cyber 1.1 simulator.