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The increased waste in the construction industry causes a major problem for disposal operation. The waste materials from construction activities are heavy in weight and occupy more storage space. In India out of 48 million tones of solid waste generated, construction waste make up 25%. Concrete and masonry waste can be recycled by sorting, crushing and sieving into recycled aggregates. This recycled aggregates can be used to make concrete for road construction, soil stabilization, etc. The re-use of waste material is an important factor in point of sustainability.
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One of the most important factor, when you build anything is the material. Another important factor in civil engineering is cost. So, that the material should be economical. Soil or Earth is one of the cheaper material available nowadays.
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The industrial wastewater is highly polluted in nature with the presence of variable characteristics such as oil and grease, excess chloride content, acids and alkaline, total solids etc. Due to this problem, it is not possible to release wastewater into a watercourse or on land. There are many treatment methods are available to remove these pollutants. Electrocoagulation is one of the wastewater treatment method which is easy to apply and cheap in cost.
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A ram accelerator is a device for accelerating projectiles to very high speeds. It uses jet-engine-like propulsion cycles based on ramjet or scramjet combustion processes. Application mainly in non-rocket spacelaunch with this technology.
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The new generation launching system StarTram is a proposal for a maglev space launch system. The initial Generation 1 facility would be cargo only, launching from a mountain peak at an altitude of 3 to 7 kilometres with an evacuated tube staying at local surface level; it has been claimed that about 150,000 tons could be lifted to orbit annually.
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Alternate power sources are rapidly spreading into research fields. Multiple sources are being experimented to replace the combustion fuels from petroleum products. One such experiement is power by aluminium
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Perpendicular Wind Turbines. Rising sea levels and escalating pollution levels has generated worldwide interest and has given rise to new wind turbines designs.(Check out EWICON, Bladeless windmill)
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Electromagnetic propulsion (EMP), is the principle of accelerating an object by the flowing electrical current and magnetic fields. The electrical current is used to create an opposing magnetic field for repell. When a current flows through a conductor in a magnetic field, an electromagnetic force known as a Lorentz force, pushes the conductor to perpendicular to the conductor and the magnetic field.
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A shiftless transmission, also known as a continously variable transmission (CVT) or a single-speed transmission or a stepless transmission or a pulley transmission or twist-and-go (basuically in two wheeler automobile).
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Printmaking has been around for 500 years. It has being used for illustrating books, printing banknotes, and duplicating famous paintings. Today, printmaking is known for its distinct look and is used by artists around the world, but lots of people don’t have access to printmaking due to the high costs of a press.
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