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Composite materials are being widely studied for the last few decades, and it has optimized the day to day applications in the engineering field. In this advancement, the use and development of metal matrices was a significant outcome that concentrated on the addition of many particulate materials in a metal matrix at nano and micro levels. Among these Magnesium, metal matrices are having a high potential, especially in transport, defense, and aircraft industries. Many research works are being carried out to use the capabilities of Magnesium and has provided excellent results. This paper is an overview of the development, processing, and improvement of properties in Magnesium alloys. Various manufacturing processes such as self-propagating high-temperature method, stir casting, laser cladding, and powder metallurgy has been used to develop the magnesium composites for increasing the properties by using various wt% of reinforcements added in the matrix. The improvement in mechanical properties such as tensile strength, yield strength, hardness and tribological properties such as wear rate is reviewed. The different properties and capabilities of Magnesium alloys such as AZ31, AZ91, and ZE41 is also discussed from the various research works.

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Clock gating is an efficient technique for reducing dynamic power in sequential circuits. It saves power by partitioning the main clock and distributing the clock to the logic blocks only when there is a need for those blocks to be activated. Synchronous circuits show reduced dynamic power dissipation for effective clock gating implementations. The paper tries to investigate different clock gating schemes and implement them to optimize the power dissipation in synchronous designs. These strategies are used to increase the flexibility of an up-to-date SPI master/slave implementation followed by the analysis of power reduction achieved. The whole design is implemented in Verilog 2001 and mapped onto Xilinx Virtex 5 FPGA device.

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Nowadays, as the technology has developed, methods need to be found out that not only hide the information but also hide the existence of that information. The art of hiding information is known as steganography. Till now many algorithms have been proposed for steganography but they suffer few or more drawbacks. This paper uses F5 algorithm for information hiding. F5 offers huge capacity for steganography. F5 is based on matrix encoding. The proposed system is evaluated on the basis of its ability to hide and retrieve the information correctly. In recent days video steganography is considered as a boon for secure and secret transmission of data. The main aim of this paper is to provide new ways of improving the existing methodologies to hide information. In continuation with this, we start by first describing the previously used algorithms and then enhancing them by describing the use of F5. General TermsDigital image processing, Network security, Algorithms.

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