Creation of a broadband network based on gpon technology qualification work of bachelor

Protection filters for monitors and their selection
Thus, even when the monitor meets the requirements of the entire international standard mpr-2 (low radiation display), additional protection should be required for the radiation. There are many suggestions about this. American specialists should be advised to position the distance, for example on the screen, at the distance of at least 222.8. The most efficient media are recognized screen part filters developed in the world. The protection filters for monitors are as follows: Different filters - practically no protection against electromagnetic radiation and static electricity, but also reduce the contrast of the image. But they protect it from the brightness of the screen and the screen, which is of great importance for the eyes.
The effect of electric current on man
Electricity can be affected by the use of electrical equipment during installation and use. The power devices are powered by voltage up to 1000 v and above 1000 v. The further development of the manufacturing industry is very important for the energy efficiency of our country. Automation of technological processes in mechanization of manufacturing enterprises is widely used. The number of employees working in different specializations is increasing. Therefore, the analysis of the causes of electric shock caused by the effects of electrical current on the human body is important for the creation of unhealthy mexanistic conditions in production. In the event of an electrical insulation, the car body is tensioned and the person is hit by an electric shock. The electrical current transmitted though the human body shows the thermal, electrical and biological effects. The thermal action of the toe is a part of the skin, which shows the appearance of the blood vessels, deposits, heart, brain and other aosions to high temperatures. Electricity of a toe is reflected in the breakdown of deposits and other organic liquids. At the same time, their physico-chemical composition is broken.
The biological action of the toe is evident in the irritation and agitation of living organisms. At the same time, the muscles, including the muscles of the heart and the abdomen, are arbitrarily dispersed, resulting in various irritations in the body, such as the breathing and the work of the circulatory system may be disrupted or even disrupted.
These types of electric shock can cause two types of damage. Electrical damage and electric shock. Electric fibrillation is a malignant lesion of the tissue in some parts of the body due to electric shock. Electric shock is different from the following types of injuries: electric shock, electrical traces, metal scrap and mechanical damage. Electric footprints are gray or light yellow dogs clearly visible on the surface of the human body. Traces, creases, minor injuries are the result of cuts or lasers. The damaged part of the skin is more like a fang. Tering fracture is caused by the penetration of molten metal particles into the upper layer of the skin during electric shock. This event is heard, for example, in short sounds, under a tension separator, and when rubylinics are transmitted from the network. Mechanical injuries occur when the muscular tension on the person is exacerbated by the sharp contraction of the muscles. As a result, the skin, the muscles of the blood vessels and the nervous system can also be excreted, and the bones may even break. When it comes to electric shock, it is understood that muscle removal results in irritation of living organisms when the electrons expire. The clinical mortality starts with the state of the nation and begins with a heart failure. The person with a clinical mortality does not have any symptoms of life: he can not breathe, his heart does not work, he does not sense the momentum, the autumn corona extends and however, this life does not have the full potential of life in the body, because it does not instantly increase its tissues and work in different ways. Although this process is very slow, unlike usual, it can be dangerous for the smallest living. First of all, the cells of the cerebral cortex, which are very sensitive to oxygen deficiency, die. The right and left-handed tissue depends on the activity of these cells. Therefore, the duration of the clinical death is determined by the time the heart function and the time when the breathing ends until the cerebral cortex arrives. In most cases this time is 4-6 minutes, and in case of coincidental electric shock in solomic specimens, it is 7-8 minutes. Biological (true) does not return to its original state, and biological processes in the organism cells and tissues end. The power of human power and its influence depends on the path to the time, the voltage, the human body, its type and frequency, and the specific features of the body. The voltage applied on the electrical devices is thee types, depending on the risk of injury to persons; low Volt -12 and 42V, interrupted - from 42 to 1000 V and above 1000 tension. Low voltage voltages are considered to be safe, but may cause a voltage drop in the environment. The value of the crankcase from the human body is the main cause of its collapse: it is so dangerous that its effect can be as dangerous as it is. The human body has a frequency of 50 Hz and a relatively small 0.5-1.5 ma will start to currents. This vulnerability is termed as "vanishing". It does not injure the person, so it is safe. As soon as the thottle becomes enlarged, the sense of achivance increases. 10-15ma / 50 Hz strong muscles are strongly and arbitrarily disputed, the man can not overcome such a shock, that is, he can not pull the touch of the cushion, remove the wire himself, it is as if you are clinging to the transmitter. It is called the current currents.