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Aquaponics is the cultivation of plants in hydroponic technology integrated with fish farming activities. This Aquaponics technology is now gaining attention among those who have a hobby of growing vegetables in a small area around the home and at the same time rearing fish. It is one of the city's agricultural activities promoted by the government with a modern concept and produce vegetables that are fresh, wholesome and quality. Typically with Aquaponics system with limited land area, the two commodities will be produced at the same time, namely vegetables and fish. The vegetables will be...

In this book a software has been developed
especially for educational or learning purpose. This
software is about "stress" which is one of the leading
important phenomena in the field of civil engineering. This
book is based on a software which will show the stress
components in graphics as well as its transformation. Any
point inside the mass or inside any structure has to face
both normal and shear stresses from each of the three
directions. This can be represented by a cube which has
...