Tihomir Čuljak
On this new model of wind turbine with sails, I made some improvements that allow much easier installation, lifting, or later lowering in case of failure or servicing. For that I had to make changes t...
The garden on raised beds is most often built by gardeners who have little space, or those who find it difficult to bend to the ground. If such beds are raised to a meter in height, planting and harve...
With the development of e-commerce and online marketing, there is a need to analyze the success of such marketing and sales. And when the need for an Internet tool arises, an application for that prob...
Tents, parasols and umbrellas are made so that the rain that falls from above is taken to the sides so that the water slides to the ground next to them. However, these human aids for protection from t...
In many smaller towns and villages along roads, there are stormwater drainage canals into which water from roads and house roofs flows during rains. In larger cities, these catchment waters are draine...
There are several ways to purify salt water or dirty water. Distillation processes are most commonly used, as well as osmosis processes in which water passes through semipermeable membranes. Distillat...
In today's space stations, all food and water for the crew must be brought from the ground. This is a very big logistical and material problem that will have to be solved on longer trips by producing...
Ships are built in shipyards, most often on dry docks that are slightly sloping towards the water surface. On such docks, there are rails on which the ship is built, and after the completion of constr...
Maritime transport is the cheapest transport, and immediately behind it is rail transport. In order to speed up and reduce the cost of transport with these two modes of transport, container traffic ha...
There are various types of seawater desalination devices for drinking water and plant irrigation. Most of these devices use a lot of energy to evaporate water and convert it into water vapor which is...
At the bottom of the sea, various works are often performed by divers. Some such works can be done much more easily when a dome is placed at the bottom of the sea under which air is blown. Then worker...
In recent years, many authoring teams have been encouraged by grand prizes, mostly in the US with made cars that can take off vertically and fly at shorter distances. Flying machines can be divided in...
The advent of communication tools for mobile phones has created the possibility of safer, faster and cheaper transmission of messages than by talking through mobile operators, exchanging SMS messages,...
Chains for cars used for driving on snow can be purchased in stores. It’s a little harder to get auxiliary tools for driving over deep mud, which often happens when off-road cars drive through a fores...
One-wheeled trolleys, the wheelbarrow, are a small innovation that has significantly facilitated work in construction, but also in agriculture. These carts allowed one man to easily carry a load great...
Rabbits are bred for meat, but also as pets. Guinea pigs or hamsters are bred as pets. They all reproduce very quickly. The biggest problem is the stench that spreads when their feces are cleaned. Thi...
The vast majority of ships will sink if they are overturned by the waves, or if an opening is formed in the hull of the ship through which water suddenly enters. Some sailboats have ballast that retur...
Drones are most commonly known as unmanned aerial vehicles. They appeared about fifty years ago as toys, and about thirty years ago they began to be used for air reconnaissance. In the last ten years,...
NASU is plagued by a problem. How to deliver a crane to the moon that should unload cargo from the cargo space of the lunar modules that would supply future lunar colonies? Existing cranes are heavy a...
Around a billion people in the world have some form of disability. That’s about 15% of the world’s population. There are also many temporary invalids as a result of illness, injury or old age. Disable...
Page 15 from 18. Results 281 - 300 from 345.
Filters
Tihomir Čuljak
