Addressing Bioprinting Challenges in Tissue Engineering
Synthesis of Zinc Oxide Nanoflower using Egg Shell Membrane as Template
In Vitro and in Vivo Experiment of Antibacterial Silver Nanoparticle-Functionalized Bone Grafting Replacements
Biocompatibility in Orthopedic Implants: Advancements and Challenges
Contemporary Approaches towards Emerging Visual Prosthesis Technologies
An Investigation on Recent Trends in Metamaterial Types and its Applications
A Review on Plasma Ion Nitriding (PIN) Process
A Review on Friction and Wear Behaviors of Brake’s Friction Materials
Comparative Parabolic Rate Constant and Coating Properties of Nickel, Cobalt, Iron and Metal Oxide Based Coating: A Review
Electro-Chemical Discharge Machining- A review and Case study
Electrical Properties of Nanocomposite Polymer Gels based on PMMA-DMA/DMC-LiCLO2 -SiO2
Comparison Of Composite Proton Conducting Polymer Gel Electrolytes Containing Weak Aromatic Acids
Enhancement in Electrical Properties of PEO Based Nano-Composite Gel Electrolytes
Effect of Donor Number of Plasticizers on Conductivity of Polymer Electrolytes Containing NH4F
PMMA Based Polymer Gel Electrolyte Containing LiCF3SO3
The management of municipal waste is a big challenge all over the world. Although, it can be reduced to a large extent by incineration process, a large amount of thermal energy can be generated. But, Waste to Energy (WTE) plants all over the world are running at very low efficiency due to the problem of hot corrosion of boiler tubes. It is required to understand the phenomena of hot corrosion in waste to energy plants in depth, in order to develop the new techniques for the protection of boiler tubes from hot corrosion. The presence of chloride salts in waste to energy plants give rise to active oxidation, resulting in rapid rate of materials degradation. The aim of this paper is to explore the mechanism of hot corrosion in waste to energy plant with support of present literature.
Brake system is one of the necessary components of the vehicle. The braking system is used to stop the vehicle within a smallest distance possible. A Review will be helpful in understanding the improvement of the performance of the brake system, to reduce the fuel consumption and weight in automobiles. This article discusses the use of MMC material instead of conventional material. An improvement in MMCs is observed during the last three decades in a big way, primarily because of their superior mechanical and tribological properties compared to monolithic materials. The principal advantage of MMCs over other materials lies in the improved strength and hardness on weight basis. The discussion is concentrated on selection of matrix and reinforcement material and variables considered during the performance test on disc brake system.
Microbial Fuel Cells (MFC) offer an attractive solution for energy production that converts chemical energy into electrical energy. This process is mediated by microbes that oxidise the organic matter (fuel) and generates electrons and protons. The aims of this study were to test Polytetrafluoroethylene (PTFE) as a proton exchange membrane and to test current generation from a mixed culture of photosynthetic microbes. PTFE is commonly used in the plumbing industry (Teflon tape) and is known to have a tendency to attract electrons. A low cost H shape (two chamber) photo MFC was built in order to harvest electricity from a mixed culture of green algae that inhabit fresh water in a local farm located in the city of Sebha, Libya. The main bodies (chambers) of the fuel cell were made of two transparent plastic food storage containers (L 13.5, H 6.5, W9.5 cm) with lid, the containers connected with dark plastic tubing and separated by PTFE membrane. A lead plate (net) was used as the anode, while a pencil graphite was used as cathode. Several resistors of different ohm's values were tested, in order to determine the optimal resistor. The maximum voltage generated using this photo MFC was 0.5 V in less than 24h of incubation under the effect of sunlight, and remained stable for more than 72h. The use of PTFE as a proton exchange membrane in the microbial fuel cell is the main advantage of this study, in terms of cost. Furthermore, the carbon source (substrate) and mediators are not required. The study concluded that, protons released during the algae action move through the PTFE membrane and reach the cathode chamber and hence electricity is produced.
Aluminium matrix composites are widely used in various advance industries like aerospace, transportation, defence, marine and auto-mobile, piston cylinder and sports, due to their better corrosion resistance, good mechanical property and high strength to weight ratio. Attention is being paid by researchers towards increasing the mechanical properties, and also to provide the attractive aesthetic appearance of the existing material by adding various reinforcement particles. Hence, in the proposed work, silicon carbide and boron carbide is considered to improve the mechanical properties like Tensile strength, hardness, wear resistance and density of the casted aluminium alloy LM6. Aluminium alloy metal matrix composites are prepared by varying the weight percentage of silicon carbide (5, 5, 7.5) and boron carbide (2, 4, 4) using stir casting technique, which is the simple and economical method. When vortex is generated by the stirrer, on the centre of the liquid matrix in the furnace, 220 mesh of boron carbide and 240 mesh size of silicon carbide particle are added on the matrix. Casted Aluminium metal matrix composite has to be tested to find the various mechanical properties. Brinell hardness tester is used to evaluate the bonding strength between reinforcement and the matrix, with 10 mm diameter of steel ball indenter. Atomic force microscopy is used to know the distribution of reinforcement in the matrix.
Nanocoatings are one of the most important topics within the range of nanotechnology. Through nanoscale engineering of surfaces and layers, a vast range of functionalities and new physical effects can be achieved. Some application ranges of nanolayers and coatings include Wear protection, Anti-graffiti, Anti-fouling, Corrosion protection, Biocompatible implants, Ultrathin die electrics, Better catalytic efficiency, Photo and electro chromatic windows, etc. Nanocoating on metallic surfaces can be applied using Six Synthesis technique Method. Mechanical properties of metals which are related to plastic deformation are yield strength, tensile strength, ductility, toughness and hardness. A requirement for almost all engineering structural materials is that they are both strong and tough (damage tolerant) yet invariably, in most materials, the properties of strength and toughness are mutually exclusive. It is the lower-strength, and hence higher-toughness, materials that find use for most safety-critical applications where premature or, worse still, catastrophic fracture is unacceptable. For these reasons, the development of strong and tough (damage-tolerant) materials has traditionally been an exercise in compromise between hardness versus ductility. There have been a lot of researches in nanocaoting that improve toughness and hardness, but there is a limitation in improving toughness without affecting its minimum hardness. This paper presents a review on those methods and mechanisms.
