Nanogels are robust nanoparticles that could be used to deliver active drug compounds in controlled drug delivery applications. Nanogels drug delivery system is more effective and safer for both hydrophilic and hydrophobic drugs due to their chemical composition and formulations that are inappropriate for other formulations. Nanogels have enabled enlargement of functionalized nanoparticles, which act as a drug carriers that can be loaded with drugs and other active material to be released in a controlled manner at specific site. This review aims at providing general introduction on nanogels, recent synthesis methodology and their novel application in different fields.

Abstract.A MANET is an interconnection of mobile devices by wireless links forming a dynamic topology without much physical network infrastructure such as routers, servers, access points or centralized administration. The multipath routing protocols establish efficient communication within the network by discovering multiple routes between a pair of source and destination in order to have load balancing to satisfy Quality of Service (QoS) requirements. The aim of this work is to modify the existing MANET reactive Multipath routing protocol Ad hoc On-demand Distance Vector (AOMDV) using drop minimization under MAC error control technique like collision minimization, dynamic queue scheme etc. In AOMDV routing we apply multipath base data sending scheme but that protocol not fulfill QoS so here we apply drop analysis base and find out pitfall of the AOMDV and after that we apply various drop minimization technique like rate base data sending scheme, queue base congestion control etc. and improve the performance of the network. A narrative Multipath QoS Aware Routing Protocol based on AOMDV is proposed to support packet delivery ratio, routing overhead minimization and UDP analysis constraints.

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A wireless MANET is a collection of communication nodes that wants to communicate with each other, but has no fixed infrastructure and no re-determined topology of links. Mobile ad hoc network is a collection of wireless mobile nodes dynamically forming a network topology without the use of any existing network infrastructure. The purpose of the present work is to compare the performance of AODV, DSR and DSDV MANET protocols for different number of nodes and mobility with different traffic channels CBR and FTP. The AODV and DSR are reactive or On demand routing protocol and DSDV is a proactive or table driven routing protocol. The performance metrics considered in this work includes packet delivery ratio, throughput and average end-toend delay. Results were obtained after simulations performed using NS2.