Main nutrients for crops are Nitrogen, Phosphorous, Potassium and Calcium. These among others must be made available continuously and in correct proportions by the soil. The individual effect of each of these nutrients is ...

Main nutrients for crops are Nitrogen, Phosphorous, Potassium and Calcium. These among others must be made available continuously and in correct proportions by the soil. The individual effect of each of these nutrients is ...

Printed matter is one of the most popular media. It is the basic means of information and education. Its wide use - ranging from high-quality books and newspapers to admission tickets - reaches every area of ...

Composite containers sometimes are also called fibre cans or paper cans. They are considered as one-way packages that are used for filling materials having a shelf life of up to one year maximum. Their main raw material ...

Roofing felt and torching felt based on bitumen stand out as excellent materials to cover concrete or wooden roofs with different slopes. Unusual slopes, roof sizes and very large areas on halls, shed-roofs, dome-shaped ...

A pallet is a portable platform which allows the collection of different or uniform packages to form a unit for transport or storage. First of all pallets are used for handling by forklift trucks, but they can also be ...

Doors and windows are important building elements, and it is a great advantage for the building industry when these elements are produced on an industrial scale. Manufacture in small workshops means rather expensive ...

From the earliest times of mankind bags from the hides of wild and later domesticated animals have been manufactured to be used for collecting and carrying fruit or game or whatever there was collected or killed. ...

Experts take the view that the earth produces enough food-stuff to nourish the population on this earth if we succeed to prevent the losses of more than 50% caused for instance by the effects of climate, vermin and ...

Beer is a carbonated alcoholic beverage that is well liked all over the world. Its production developed over the centuries from home-type brewing facilities to industrial manufacturing. Today's beer production plants ...