Abstract: A precast H block (3) interlock each other to form sloping wall and similarly precast Y block (10) interlock each other to form straight wall, both block having a pin hole (4) through side walls. A wire rope (5) passing through said pin hole to make a wall strengthened by nailing horizontally (14) into the earth (8) adjacent to the block and vertically nailing (9) at top and bottom level. As well as wire rope (5) passing through said pin hole (4) of uppermost blocks, from underneath the road, to make a wall/barrier strengthened by nailing vertically (9) into the earth across the road (2).

Abstract: A system for aeration and separation of contaminants from flowing water in a channel, comprising: a wall (1) partially embedded in the channel of flowing water; a mesh (4) placed above the wall (1); a plurality of baffles (3, 5) partially embedded in the channel and placed opposite to each other in such manner so as to the increase the distance travelled by water; plants algae planted around and on the baffles (3, 5); a flooring (6) sloping towards flowing water direction; a sink (2) constructed at a depth lower than the flooring (6); and a water wheel (11) placed in flowing water.

Abstract: A system for aeration and separation of contaminant from flowing water (10) is disclose wherein a contaminated water travel through up and down flooring (6) and diverted its path frequently by the means of baffle (5) to aerate and increase travel distance in particular channel (1). The sink (2) between last baffle and partition wall (3) collect contaminant and sliding mesh(4) above wall(3) collect the plastic, metallic, paper and weed.

Abstract: A precast H block (3) interlock each other to form sloping wall and similarly precast Y block (10) interlock each other to form straight wall, both block having a pin hole (4) through side walls. A wire rope (5) passing through said pin hole to make a wall strengthened by nailing horizontally (14) into the earth (8) adjacent to the block and vertically nailing (9) at top and bottom level. As well as wire rope (5) passing through said pin hole (4) of uppermost blocks, from underneath the road, to make a wall/barrier strengthened by nailing vertically (9) into the earth across the road (2).

Abstract: A thermodynamic cycle of refrigeration system for controlling heating and cooling in a room/storage consisting of compressor (1) circulating refrigerant which enters in the compressor (1) as vapor. The vapor is compressed and then exists the compressor superheated, the superheated vapor passes through the condenser (2) which first cools and removes the superheat. The vapor is condensed into a liquid by removing additional heat pressure and temperature by fan (5) across the condenser coil. The warm air in hot room passes through the condenser coil and gets heated up, this heat is absorbed by the products kept in hot room, the said liquid refrigerant goes through the expansion valve (3) when pressure suddenly drops down, flash evaporations takes place. The cold liquid vapor mixture then travels through the evaporation coil (4) and is vaporized by the cooling of the warm air by a fan (6) across the evaporation coil, the refrigerant vapor returns to the condenser inlet to repeat the cycle.