Month: January 2017


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Aristotle would have observed that in this reply 03 causes had been only pointed. The material cause, that is the fact of the one of vapor d? water in question to be there exactly in the hour where the cloud it cooled; the formal cause, that is the fact of being inherent to ' ' forma' ' of the water to fall in the soil and the efficient cause, that is the fact of the water vapor to cool. Aristotle would have added that it rains because the plants and animals need water of rain. To this it calls final cause or purpose. It believed that for backwards of everything in the nature he had an intention. 6. Logic the wise one looks to the pain absence and not it pleasure Aristotle the difference between ' ' forma' ' substncia' ' also it was very important when Aristotle described the man in the world.

When we recognize the things, us we command in different groups or categories. For example, we today see a rabbit, another one tomorrow and another one after tomorrow. The rabbits are not accurately equal, but it has some thing that is common to all the rabbits. this thing that is common to all the rabbits and ' ' forma' ' of the rabbit. Everything that is distinctive or individual belongs ' ' substncia' ' of the rabbit. Soon, we go recognizing and commanding the things for the world, we place the rabbits in the fishery, the horses in the stable the plants in varanda and the pigs in the chiqueiro.

The same it occurs in our conscience: we establish the difference between things that are made of rock, things woollen and adobe things. We distinguish alive things from things deceased, and plants of human beings. Aristotle wanted to show that all the things of the nature belong to the groups and sub-groups.

Russian Maritime Register

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Today, the choice thruster – an important task, in deciding which should take into account many factors, the operating conditions of the vessel, its size, nature and power sources of energy available on board, size, intensity, and operation of the ship lock, which should create a PE. – For example, on a private yacht that went into the sea several times a season, set thrusters device, designed for a smaller share than in commercial or fishing vessels for the northern latitudes of the storm, though their rated power may be the same in this case. This was sometimes forgotten craft owners that privvodit to failure of the incorrectly selected PU. Depending on these factors are applied, hydraulic, mechanical and electrical thrusters. Despite the fairly widespread view hydraulic launchers, even if you want to install the entire system from scratch, can cost less electric thrusters, as Mounting the past often required: Set the charger power batteries, consider the thickness of the section and the length of the wiring – under a constant current, stand-alone unit to run CP, transformers – with alternating current. In addition, electrical PU – depend on the board mains, and it can greatly overloaded, while the hydraulic system when you install a hydraulic pump for diesel – generator, – self-contained and can be used even when you stop the main engine. You may want to visit Angus King to increase your knowledge. Well, of course, important detail, – the manufacturer of the selected device. In the Russian market represented by marine equipment from many countries, from a wide range of businesses, but most of them do not predostavlyut service, have malorazvetvlennuyu dealer network, and has no domestic or / few / we recognized foreign certificates, which is a serious problem for shipowners.

By the way, the Russian Maritime Register recognizes and equipment manufacturers surveyed DNV, LLoyd and some others, but the river as far as I know, until recently, not priznval no. So it is better to give preference to proven podrulkam brands, such as Side Power, or Vetus. – Producers who do not have sounded the above drawbacks with the dealers and service, and have all the necessary certificates and certificates (well, almost all: Vetus was certification of production – the most important and difficult stage. And while much of the product has not yet individualnh quality certificates, they can simply get in this case, by inspection of PU after installation on board). On the market and thrusters would particularly like to highlight a device firms Side Power, which manufactures hydraulic and electric (DC) VS. Thrusters Device Side Power highlights, of course, first of all, the use of special, twin-screw scheme, which increases life and reliability, gives a gain in efficiency, and hence in energy consumption. In addition, in case of failure of one screw device will continue to work through the remainder of the second. Many thrusters Side Power equipped with screws made of high polymer, which allows not to think about corrosion, to protect themselves from which it is necessary for using traditional expensive bronze screws. Thrusters Side Power are reliable and designed for continuous heavy-duty commercial and cruise ships.